| /******************************************************************************* |
| * Copyright (c) 2000, 2015 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Lars Vogel <Lars.Vogel@vogella.com> - Bug 483540 |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.events.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.win32.*; |
| |
| /** |
| * Instances of this class are controls that allow the user |
| * to choose an item from a list of items, or optionally |
| * enter a new value by typing it into an editable text |
| * field. Often, <code>Combo</code>s are used in the same place |
| * where a single selection <code>List</code> widget could |
| * be used but space is limited. A <code>Combo</code> takes |
| * less space than a <code>List</code> widget and shows |
| * similar information. |
| * <p> |
| * Note: Since <code>Combo</code>s can contain both a list |
| * and an editable text field, it is possible to confuse methods |
| * which access one versus the other (compare for example, |
| * <code>clearSelection()</code> and <code>deselectAll()</code>). |
| * The API documentation is careful to indicate either "the |
| * receiver's list" or the "the receiver's text field" to |
| * distinguish between the two cases. |
| * </p><p> |
| * Note that although this class is a subclass of <code>Composite</code>, |
| * it does not make sense to add children to it, or set a layout on it. |
| * </p> |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>DROP_DOWN, READ_ONLY, SIMPLE</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>DefaultSelection, Modify, Selection, Verify, OrientationChange</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the styles DROP_DOWN and SIMPLE may be specified. |
| * </p><p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| * |
| * @see List |
| * @see <a href="http://www.eclipse.org/swt/snippets/#combo">Combo snippets</a> |
| * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| * @noextend This class is not intended to be subclassed by clients. |
| */ |
| public class Combo extends Composite { |
| boolean noSelection, ignoreDefaultSelection, ignoreCharacter, ignoreModify, ignoreResize, lockText; |
| int scrollWidth, visibleCount; |
| long /*int*/ cbtHook; |
| String [] items = new String [0]; |
| int[] segments; |
| int clearSegmentsCount = 0; |
| |
| static final char LTR_MARK = '\u200e'; |
| static final char RTL_MARK = '\u200f'; |
| static final int VISIBLE_COUNT = 5; |
| |
| /** |
| * the operating system limit for the number of characters |
| * that the text field in an instance of this class can hold |
| */ |
| public static final int LIMIT; |
| |
| /* |
| * These values can be different on different platforms. |
| * Therefore they are not initialized in the declaration |
| * to stop the compiler from inlining. |
| */ |
| static { |
| LIMIT = OS.IsWinNT ? 0x7FFFFFFF : 0x7FFF; |
| } |
| |
| /* |
| * These are the undocumented control id's for the children of |
| * a combo box. Since there are no constants for these values, |
| * they may change with different versions of Windows (but have |
| * been the same since Windows 3.0). |
| */ |
| static final int CBID_LIST = 1000; |
| static final int CBID_EDIT = 1001; |
| static /*final*/ long /*int*/ EditProc, ListProc; |
| |
| static final long /*int*/ ComboProc; |
| static final TCHAR ComboClass = new TCHAR (0, "COMBOBOX", true); |
| static { |
| WNDCLASS lpWndClass = new WNDCLASS (); |
| OS.GetClassInfo (0, ComboClass, lpWndClass); |
| ComboProc = lpWndClass.lpfnWndProc; |
| } |
| |
| /** |
| * Constructs a new instance of this class given its parent |
| * and a style value describing its behavior and appearance. |
| * <p> |
| * The style value is either one of the style constants defined in |
| * class <code>SWT</code> which is applicable to instances of this |
| * class, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>SWT</code> style constants. The class description |
| * lists the style constants that are applicable to the class. |
| * Style bits are also inherited from superclasses. |
| * </p> |
| * |
| * @param parent a composite control which will be the parent of the new instance (cannot be null) |
| * @param style the style of control to construct |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| * |
| * @see SWT#DROP_DOWN |
| * @see SWT#READ_ONLY |
| * @see SWT#SIMPLE |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public Combo (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| /* This code is intentionally commented */ |
| //if ((style & SWT.H_SCROLL) != 0) this.style |= SWT.H_SCROLL; |
| this.style |= SWT.H_SCROLL; |
| } |
| |
| /** |
| * Adds the argument to the end of the receiver's list. |
| * <p> |
| * Note: If control characters like '\n', '\t' etc. are used |
| * in the string, then the behavior is platform dependent. |
| * </p> |
| * @param string the new item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see #add(String,int) |
| */ |
| public void add (String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TCHAR buffer = new TCHAR (getCodePage (), string, true); |
| int result = (int)/*64*/OS.SendMessage (handle, OS.CB_ADDSTRING, 0, buffer); |
| if (result == OS.CB_ERR) error (SWT.ERROR_ITEM_NOT_ADDED); |
| if (result == OS.CB_ERRSPACE) error (SWT.ERROR_ITEM_NOT_ADDED); |
| if ((style & SWT.H_SCROLL) != 0) setScrollWidth (buffer, true); |
| } |
| |
| /** |
| * Adds the argument to the receiver's list at the given |
| * zero-relative index. |
| * <p> |
| * Note: To add an item at the end of the list, use the |
| * result of calling <code>getItemCount()</code> as the |
| * index or use <code>add(String)</code>. |
| * </p><p> |
| * Also note, if control characters like '\n', '\t' etc. are used |
| * in the string, then the behavior is platform dependent. |
| * </p> |
| * |
| * @param string the new item |
| * @param index the index for the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list (inclusive)</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see #add(String) |
| */ |
| public void add (String string, int index) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| int count = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCOUNT, 0, 0); |
| if (!(0 <= index && index <= count)) { |
| error (SWT.ERROR_INVALID_RANGE); |
| } |
| TCHAR buffer = new TCHAR (getCodePage (), string, true); |
| int result = (int)/*64*/OS.SendMessage (handle, OS.CB_INSERTSTRING, index, buffer); |
| if (result == OS.CB_ERRSPACE || result == OS.CB_ERR) { |
| error (SWT.ERROR_ITEM_NOT_ADDED); |
| } |
| if ((style & SWT.H_SCROLL) != 0) setScrollWidth (buffer, true); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the receiver's text is modified, by sending |
| * it one of the messages defined in the <code>ModifyListener</code> |
| * interface. |
| * |
| * @param listener the listener which should be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see ModifyListener |
| * @see #removeModifyListener |
| */ |
| public void addModifyListener (ModifyListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener (listener); |
| addListener (SWT.Modify, typedListener); |
| } |
| |
| /** |
| * Adds a segment listener. |
| * <p> |
| * A <code>SegmentEvent</code> is sent whenever text content is being modified or |
| * a segment listener is added or removed. You can |
| * customize the appearance of text by indicating certain characters to be inserted |
| * at certain text offsets. This may be used for bidi purposes, e.g. when |
| * adjacent segments of right-to-left text should not be reordered relative to |
| * each other. |
| * E.g., multiple Java string literals in a right-to-left language |
| * should generally remain in logical order to each other, that is, the |
| * way they are stored. |
| * </p> |
| * <p> |
| * <b>Warning</b>: This API is currently only implemented on Windows. |
| * <code>SegmentEvent</code>s won't be sent on GTK and Cocoa. |
| * </p> |
| * |
| * @param listener the listener which should be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see SegmentEvent |
| * @see SegmentListener |
| * @see #removeSegmentListener |
| * |
| * @since 3.103 |
| */ |
| public void addSegmentListener (SegmentListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| addListener (SWT.Segments, new TypedListener (listener)); |
| int selection = OS.CB_ERR; |
| if (!noSelection) { |
| selection = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCURSEL, 0, 0); |
| } |
| clearSegments (true); |
| applyEditSegments (); |
| applyListSegments (); |
| if (selection != OS.CB_ERR) { |
| OS.SendMessage (handle, OS.CB_SETCURSEL, selection, 0); |
| } |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the user changes the receiver's selection, by sending |
| * it one of the messages defined in the <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * <code>widgetSelected</code> is called when the user changes the combo's list selection. |
| * <code>widgetDefaultSelected</code> is typically called when ENTER is pressed the combo's text area. |
| * </p> |
| * |
| * @param listener the listener which should be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see SelectionListener |
| * @see #removeSelectionListener |
| * @see SelectionEvent |
| */ |
| public void addSelectionListener(SelectionListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener (listener); |
| addListener (SWT.Selection,typedListener); |
| addListener (SWT.DefaultSelection,typedListener); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the receiver's text is verified, by sending |
| * it one of the messages defined in the <code>VerifyListener</code> |
| * interface. |
| * |
| * @param listener the listener which should be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see VerifyListener |
| * @see #removeVerifyListener |
| * |
| * @since 3.1 |
| */ |
| public void addVerifyListener (VerifyListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener (listener); |
| addListener (SWT.Verify, typedListener); |
| } |
| |
| void applyEditSegments () { |
| if (--clearSegmentsCount != 0) return; |
| if (!hooks (SWT.Segments) && !filters (SWT.Segments) && (state & HAS_AUTO_DIRECTION) == 0) return; |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| int length = OS.GetWindowTextLength (hwndText); |
| int cp = getCodePage (); |
| TCHAR buffer = new TCHAR (cp, length + 1); |
| if (length > 0) OS.GetWindowText (hwndText, buffer, length + 1); |
| String string = buffer.toString (0, length); |
| /* Get segments */ |
| segments = null; |
| Event event = getSegments (string); |
| if (event == null || event.segments == null) return; |
| segments = event.segments; |
| int nSegments = segments.length; |
| if (nSegments == 0) return; |
| char [] segmentsChars = event.segmentsChars; |
| int/*64*/ limit = (int/*64*/)OS.SendMessage (hwndText, OS.EM_GETLIMITTEXT, 0, 0) & 0x7fffffff; |
| OS.SendMessage (hwndText, OS.EM_SETLIMITTEXT, limit + Math.min (nSegments, LIMIT - limit), 0); |
| length += nSegments; |
| char [] newChars = new char [length + 1]; |
| int charCount = 0, segmentCount = 0; |
| char defaultSeparator = getOrientation () == SWT.RIGHT_TO_LEFT ? RTL_MARK : LTR_MARK; |
| while (charCount < length) { |
| if (segmentCount < nSegments && charCount - segmentCount == segments [segmentCount]) { |
| char separator = segmentsChars != null && segmentsChars.length > segmentCount ? segmentsChars [segmentCount] : defaultSeparator; |
| newChars [charCount++] = separator; |
| segmentCount++; |
| } else if (string != null) { |
| newChars [charCount] = string.charAt (charCount++ - segmentCount); |
| } |
| } |
| while (segmentCount < nSegments) { |
| segments [segmentCount] = charCount - segmentCount; |
| char separator = segmentsChars != null && segmentsChars.length > segmentCount ? segmentsChars [segmentCount] : defaultSeparator; |
| newChars [charCount++] = separator; |
| segmentCount++; |
| } |
| /* Get the current selection */ |
| int [] start = new int [1], end = new int [1]; |
| OS.SendMessage (hwndText, OS.EM_GETSEL, start, end); |
| if (!OS.IsUnicode && OS.IsDBLocale) { |
| start [0] = mbcsToWcsPos (start [0]); |
| end [0] = mbcsToWcsPos (end [0]); |
| } |
| boolean oldIgnoreCharacter = ignoreCharacter, oldIgnoreModify = ignoreModify; |
| ignoreCharacter = ignoreModify = true; |
| /* |
| * SetWindowText empties the undo buffer and disables undo menu item. |
| * Sending OS.EM_REPLACESEL message instead. |
| */ |
| newChars [length] = 0; |
| buffer = new TCHAR (cp, newChars, false); |
| OS.SendMessage (hwndText, OS.EM_SETSEL, 0, -1); |
| long /*int*/ undo = OS.SendMessage (hwndText, OS.EM_CANUNDO, 0, 0); |
| OS.SendMessage (hwndText, OS.EM_REPLACESEL, undo, buffer); |
| /* Restore selection */ |
| start [0] = translateOffset (start [0]); |
| end [0] = translateOffset (end [0]); |
| if (!OS.IsUnicode && OS.IsDBLocale) { |
| start [0] = wcsToMbcsPos (start [0]); |
| end [0] = wcsToMbcsPos (end [0]); |
| } |
| if (segmentsChars != null && segmentsChars.length > 0) { |
| /* |
| * In addition to enforcing the required direction by prepending a UCC (LRE |
| * or RLE), also set the direction through a Window style. |
| * This is to ensure correct caret movement, and makes sense even when the |
| * UCC was added by an authentic SegmentListener. |
| */ |
| int auto = state & HAS_AUTO_DIRECTION; |
| if (segmentsChars[0] == RLE) { |
| super.updateTextDirection(SWT.RIGHT_TO_LEFT); |
| } else if (segmentsChars[0] == LRE) { |
| super.updateTextDirection(SWT.LEFT_TO_RIGHT); |
| } |
| state |= auto; |
| } |
| OS.SendMessage (hwndText, OS.EM_SETSEL, start [0], end [0]); |
| ignoreCharacter = oldIgnoreCharacter; |
| ignoreModify = oldIgnoreModify; |
| } |
| |
| void applyListSegments () { |
| int count = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCOUNT, 0, 0); |
| if (count == OS.CB_ERR) return; |
| boolean add = items.length != count; |
| if (add) items = new String [count]; |
| int index = items.length; |
| int selection = OS.CB_ERR; |
| int cp = getCodePage (); |
| String string; |
| TCHAR buffer; |
| if (!noSelection) { |
| selection = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCURSEL, 0, 0); |
| } |
| while (index-- > 0) { |
| buffer = null; |
| if (add) { |
| int length = (int)/*64*/OS.SendMessage (handle, OS.CB_GETLBTEXTLEN, index, 0); |
| if (length == OS.CB_ERR) error (SWT.ERROR); |
| buffer = new TCHAR (cp, length + 1); |
| if (OS.SendMessage (handle, OS.CB_GETLBTEXT, index, buffer) == OS.CB_ERR) return; |
| items [index] = string = buffer.toString (0, length); |
| } else { |
| string = items [index]; |
| } |
| if (OS.SendMessage (handle, OS.CB_DELETESTRING, index, 0) == OS.CB_ERR) return; |
| if (buffer == null) buffer = new TCHAR (cp, string, true); |
| if (OS.SendMessage (handle, OS.CB_INSERTSTRING, index, buffer) == OS.CB_ERR) return; |
| } |
| if (selection != OS.CB_ERR) { |
| OS.SendMessage (handle, OS.CB_SETCURSEL, selection, 0); |
| } |
| } |
| |
| @Override |
| long /*int*/ callWindowProc (long /*int*/ hwnd, int msg, long /*int*/ wParam, long /*int*/ lParam) { |
| if (handle == 0) return 0; |
| if (hwnd == handle) { |
| switch (msg) { |
| case OS.WM_SIZE: { |
| ignoreResize = true; |
| boolean oldLockText = lockText; |
| if ((style & SWT.READ_ONLY) == 0) lockText = true; |
| long /*int*/ result = OS.CallWindowProc (ComboProc, hwnd, msg, wParam, lParam); |
| if ((style & SWT.READ_ONLY) == 0) lockText = oldLockText; |
| ignoreResize = false; |
| return result; |
| } |
| } |
| return OS.CallWindowProc (ComboProc, hwnd, msg, wParam, lParam); |
| } |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwnd == hwndText) { |
| if (lockText && msg == OS.WM_SETTEXT) { |
| long /*int*/ hHeap = OS.GetProcessHeap (); |
| int length = OS.GetWindowTextLength (handle); |
| TCHAR buffer = new TCHAR (getCodePage (), length + 1); |
| OS.GetWindowText (handle, buffer, length + 1); |
| int byteCount = buffer.length () * TCHAR.sizeof; |
| long /*int*/ pszText = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, byteCount); |
| OS.MoveMemory (pszText, buffer, byteCount); |
| long /*int*/ code = OS.CallWindowProc (EditProc, hwndText, msg, wParam, pszText); |
| OS.HeapFree (hHeap, 0, pszText); |
| return code; |
| } |
| return OS.CallWindowProc (EditProc, hwnd, msg, wParam, lParam); |
| } |
| long /*int*/ hwndList = OS.GetDlgItem (handle, CBID_LIST); |
| if (hwnd == hwndList) { |
| return OS.CallWindowProc (ListProc, hwnd, msg, wParam, lParam); |
| } |
| return OS.DefWindowProc (hwnd, msg, wParam, lParam); |
| } |
| |
| long /*int*/ CBTProc (long /*int*/ nCode, long /*int*/ wParam, long /*int*/ lParam) { |
| if ((int)/*64*/nCode == OS.HCBT_CREATEWND) { |
| TCHAR buffer = new TCHAR (0, 128); |
| OS.GetClassName (wParam, buffer, buffer.length ()); |
| String className = buffer.toString (0, buffer.strlen ()); |
| if (className.equals ("Edit") || className.equals ("EDIT")) { //$NON-NLS-1$ //$NON-NLS-2$ |
| int bits = OS.GetWindowLong (wParam, OS.GWL_STYLE); |
| OS.SetWindowLong (wParam, OS.GWL_STYLE, bits & ~OS.ES_NOHIDESEL); |
| } |
| } |
| return OS.CallNextHookEx (cbtHook, (int)/*64*/nCode, wParam, lParam); |
| } |
| |
| @Override |
| boolean checkHandle (long /*int*/ hwnd) { |
| return hwnd == handle || hwnd == OS.GetDlgItem (handle, CBID_EDIT) || hwnd == OS.GetDlgItem (handle, CBID_LIST); |
| } |
| |
| @Override |
| protected void checkSubclass () { |
| if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS); |
| } |
| |
| static int checkStyle (int style) { |
| /* |
| * Feature in Windows. It is not possible to create |
| * a combo box that has a border using Windows style |
| * bits. All combo boxes draw their own border and |
| * do not use the standard Windows border styles. |
| * Therefore, no matter what style bits are specified, |
| * clear the BORDER bits so that the SWT style will |
| * match the Windows widget. |
| * |
| * The Windows behavior is currently implemented on |
| * all platforms. |
| */ |
| style &= ~SWT.BORDER; |
| |
| /* |
| * Even though it is legal to create this widget |
| * with scroll bars, they serve no useful purpose |
| * because they do not automatically scroll the |
| * widget's client area. The fix is to clear |
| * the SWT style. |
| */ |
| style &= ~(SWT.H_SCROLL | SWT.V_SCROLL); |
| style = checkBits (style, SWT.DROP_DOWN, SWT.SIMPLE, 0, 0, 0, 0); |
| if ((style & SWT.SIMPLE) != 0) return style & ~SWT.READ_ONLY; |
| return style; |
| } |
| |
| void clearSegments (boolean applyText) { |
| if (clearSegmentsCount++ != 0) return; |
| if (segments == null) return; |
| int nSegments = segments.length; |
| if (nSegments == 0) return; |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| int/*64*/ limit = (int/*64*/)OS.SendMessage (hwndText, OS.EM_GETLIMITTEXT, 0, 0) & 0x7fffffff; |
| if (limit < LIMIT) { |
| OS.SendMessage (hwndText, OS.EM_SETLIMITTEXT, Math.max (1, limit - nSegments), 0); |
| } |
| if (!applyText) { |
| segments = null; |
| return; |
| } |
| boolean oldIgnoreCharacter = ignoreCharacter, oldIgnoreModify = ignoreModify; |
| ignoreCharacter = ignoreModify = true; |
| int length = OS.GetWindowTextLength (hwndText); |
| int cp = getCodePage (); |
| TCHAR buffer = new TCHAR (cp, length + 1); |
| if (length > 0) OS.GetWindowText (hwndText, buffer, length + 1); |
| buffer = deprocessText (buffer, 0, -1, true); |
| /* Get the current selection */ |
| int [] start = new int [1], end = new int [1]; |
| OS.SendMessage (hwndText, OS.EM_GETSEL, start, end); |
| if (!OS.IsUnicode && OS.IsDBLocale) { |
| start [0] = mbcsToWcsPos (start[0]); |
| end [0]= mbcsToWcsPos (end [0]); |
| } |
| start [0] = untranslateOffset (start [0]); |
| end [0] = untranslateOffset (end[0]); |
| |
| segments = null; |
| /* |
| * SetWindowText empties the undo buffer and disables undo in the context |
| * menu. Sending OS.EM_REPLACESEL message instead. |
| */ |
| OS.SendMessage (hwndText, OS.EM_SETSEL, 0, -1); |
| long /*int*/ undo = OS.SendMessage (hwndText, OS.EM_CANUNDO, 0, 0); |
| OS.SendMessage (hwndText, OS.EM_REPLACESEL, undo, buffer); |
| /* Restore selection */ |
| if (!OS.IsUnicode && OS.IsDBLocale) { |
| start [0] = wcsToMbcsPos (start [0]); |
| end [0] = wcsToMbcsPos (end [0]); |
| } |
| OS.SendMessage (hwndText, OS.EM_SETSEL, start [0], end [0]); |
| ignoreCharacter = oldIgnoreCharacter; |
| ignoreModify = oldIgnoreModify; |
| } |
| |
| /** |
| * Sets the selection in the receiver's text field to an empty |
| * selection starting just before the first character. If the |
| * text field is editable, this has the effect of placing the |
| * i-beam at the start of the text. |
| * <p> |
| * Note: To clear the selected items in the receiver's list, |
| * use <code>deselectAll()</code>. |
| * </p> |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see #deselectAll |
| */ |
| public void clearSelection () { |
| checkWidget (); |
| OS.SendMessage (handle, OS.CB_SETEDITSEL, 0, -1); |
| } |
| |
| @Override Point computeSizeInPixels (int wHint, int hHint, boolean changed) { |
| checkWidget (); |
| int width = 0, height = 0; |
| if (wHint == SWT.DEFAULT) { |
| long /*int*/ newFont, oldFont = 0; |
| long /*int*/ hDC = OS.GetDC (handle); |
| newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0); |
| if (newFont != 0) oldFont = OS.SelectObject (hDC, newFont); |
| int count = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCOUNT, 0, 0); |
| RECT rect = new RECT (); |
| int flags = OS.DT_CALCRECT | OS.DT_NOPREFIX; |
| if ((style & SWT.READ_ONLY) == 0) flags |= OS.DT_EDITCONTROL; |
| int length = OS.GetWindowTextLength (handle); |
| int cp = getCodePage (); |
| TCHAR buffer = new TCHAR (cp, length + 1); |
| OS.GetWindowText (handle, buffer, length + 1); |
| OS.DrawText (hDC, buffer, length, rect, flags); |
| width = Math.max (width, rect.right - rect.left); |
| if ((style & SWT.H_SCROLL) != 0) { |
| width = Math.max (width, scrollWidth); |
| } else { |
| for (int i=0; i<count; i++) { |
| length = (int)/*64*/OS.SendMessage (handle, OS.CB_GETLBTEXTLEN, i, 0); |
| if (length != OS.CB_ERR) { |
| if (length + 1 > buffer.length ()) buffer = new TCHAR (cp, length + 1); |
| int result = (int)/*64*/OS.SendMessage (handle, OS.CB_GETLBTEXT, i, buffer); |
| if (result != OS.CB_ERR) { |
| OS.DrawText (hDC, buffer, length, rect, flags); |
| width = Math.max (width, rect.right - rect.left); |
| } |
| } |
| } |
| } |
| if (newFont != 0) OS.SelectObject (hDC, oldFont); |
| OS.ReleaseDC (handle, hDC); |
| } |
| if (hHint == SWT.DEFAULT) { |
| if ((style & SWT.SIMPLE) != 0) { |
| int count = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCOUNT, 0, 0); |
| int itemHeight = (int)/*64*/OS.SendMessage (handle, OS.CB_GETITEMHEIGHT, 0, 0); |
| height = count * itemHeight; |
| } |
| } |
| if (width == 0) width = DEFAULT_WIDTH; |
| if (height == 0) height = DEFAULT_HEIGHT; |
| if (wHint != SWT.DEFAULT) width = wHint; |
| if (hHint != SWT.DEFAULT) height = hHint; |
| if ((style & SWT.READ_ONLY) != 0) { |
| width += 8; |
| } else { |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText != 0) { |
| long /*int*/ margins = OS.SendMessage (hwndText, OS.EM_GETMARGINS, 0, 0); |
| int marginWidth = OS.LOWORD (margins) + OS.HIWORD (margins); |
| width += marginWidth + 3; |
| } |
| } |
| COMBOBOXINFO pcbi = new COMBOBOXINFO (); |
| pcbi.cbSize = COMBOBOXINFO.sizeof; |
| if (((style & SWT.SIMPLE) == 0) && !OS.IsWinCE && OS.GetComboBoxInfo (handle, pcbi)) { |
| width += pcbi.itemLeft + (pcbi.buttonRight - pcbi.buttonLeft); |
| height = (pcbi.buttonBottom - pcbi.buttonTop) + pcbi.buttonTop * 2; |
| } else { |
| int border = OS.GetSystemMetrics (OS.SM_CXEDGE); |
| width += OS.GetSystemMetrics (OS.SM_CXVSCROLL) + border * 2; |
| int textHeight = (int)/*64*/OS.SendMessage (handle, OS.CB_GETITEMHEIGHT, -1, 0); |
| if ((style & SWT.DROP_DOWN) != 0) { |
| height = textHeight + 6; |
| } else { |
| height += textHeight + 10; |
| } |
| } |
| if ((style & SWT.SIMPLE) != 0 && (style & SWT.H_SCROLL) != 0) { |
| height += OS.GetSystemMetrics (OS.SM_CYHSCROLL); |
| } |
| return new Point (width, height); |
| } |
| |
| /** |
| * Copies the selected text. |
| * <p> |
| * The current selection is copied to the clipboard. |
| * </p> |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 2.1 |
| */ |
| public void copy () { |
| checkWidget (); |
| OS.SendMessage (handle, OS.WM_COPY, 0, 0); |
| } |
| |
| @Override |
| void createHandle () { |
| /* |
| * Feature in Windows. When the selection changes in a combo box, |
| * Windows draws the selection, even when the combo box does not |
| * have focus. Strictly speaking, this is the correct Windows |
| * behavior because the combo box sets ES_NOHIDESEL on the text |
| * control that it creates. Despite this, it looks strange because |
| * Windows also clears the selection and selects all the text when |
| * the combo box gets focus. The fix is use the CBT hook to clear |
| * the ES_NOHIDESEL style bit when the text control is created. |
| */ |
| if (OS.IsWinCE || (style & (SWT.READ_ONLY | SWT.SIMPLE)) != 0) { |
| super.createHandle (); |
| } else { |
| int threadId = OS.GetCurrentThreadId (); |
| Callback cbtCallback = new Callback (this, "CBTProc", 3); //$NON-NLS-1$ |
| long /*int*/ cbtProc = cbtCallback.getAddress (); |
| if (cbtProc == 0) error (SWT.ERROR_NO_MORE_CALLBACKS); |
| cbtHook = OS.SetWindowsHookEx (OS.WH_CBT, cbtProc, 0, threadId); |
| super.createHandle (); |
| if (cbtHook != 0) OS.UnhookWindowsHookEx (cbtHook); |
| cbtHook = 0; |
| cbtCallback.dispose (); |
| } |
| state &= ~(CANVAS | THEME_BACKGROUND); |
| |
| /* Get the text and list window procs */ |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText != 0 && EditProc == 0) { |
| EditProc = OS.GetWindowLongPtr (hwndText, OS.GWLP_WNDPROC); |
| } |
| long /*int*/ hwndList = OS.GetDlgItem (handle, CBID_LIST); |
| if (hwndList != 0 && ListProc == 0) { |
| ListProc = OS.GetWindowLongPtr (hwndList, OS.GWLP_WNDPROC); |
| } |
| |
| /* |
| * Bug in Windows. If the combo box has the CBS_SIMPLE style, |
| * the list portion of the combo box is not drawn correctly the |
| * first time, causing pixel corruption. The fix is to ensure |
| * that the combo box has been resized more than once. |
| */ |
| if ((style & SWT.SIMPLE) != 0) { |
| int flags = OS.SWP_NOZORDER | OS.SWP_DRAWFRAME | OS.SWP_NOACTIVATE; |
| SetWindowPos (handle, 0, 0, 0, 0x3FFF, 0x3FFF, flags); |
| SetWindowPos (handle, 0, 0, 0, 0, 0, flags); |
| } |
| } |
| |
| @Override |
| void createWidget() { |
| super.createWidget(); |
| visibleCount = VISIBLE_COUNT; |
| if ((style & SWT.SIMPLE) == 0) { |
| int itemHeight = (int)/*64*/OS.SendMessage (handle, OS.CB_GETITEMHEIGHT, 0, 0); |
| if (itemHeight != OS.CB_ERR && itemHeight != 0) { |
| int maxHeight = 0; |
| if (OS.IsWinCE || OS.WIN32_VERSION < OS.VERSION (4, 10)) { |
| RECT rect = new RECT (); |
| OS.SystemParametersInfo (OS.SPI_GETWORKAREA, 0, rect, 0); |
| maxHeight = (rect.bottom - rect.top) / 3; |
| } else { |
| long /*int*/ hmonitor = OS.MonitorFromWindow (handle, OS.MONITOR_DEFAULTTONEAREST); |
| MONITORINFO lpmi = new MONITORINFO (); |
| lpmi.cbSize = MONITORINFO.sizeof; |
| OS.GetMonitorInfo (hmonitor, lpmi); |
| maxHeight = (lpmi.rcWork_bottom - lpmi.rcWork_top) / 3; |
| } |
| visibleCount = Math.max(visibleCount, maxHeight / itemHeight); |
| } |
| } |
| } |
| |
| /** |
| * Cuts the selected text. |
| * <p> |
| * The current selection is first copied to the |
| * clipboard and then deleted from the widget. |
| * </p> |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 2.1 |
| */ |
| public void cut () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) return; |
| OS.SendMessage (handle, OS.WM_CUT, 0, 0); |
| } |
| |
| @Override |
| int defaultBackground () { |
| return OS.GetSysColor (OS.COLOR_WINDOW); |
| } |
| |
| TCHAR deprocessText (TCHAR text, int start, int end, boolean terminate) { |
| if (text == null || segments == null) return text; |
| int length = text.length(); |
| if (length == 0) return text; |
| int nSegments = segments.length; |
| if (nSegments == 0) return text; |
| char [] chars; |
| if (start < 0) start = 0; |
| if (OS.IsUnicode) { |
| chars = text.chars; |
| if (text.chars [length - 1] == 0) length--; |
| } else { |
| chars = new char [length]; |
| length = OS.MultiByteToWideChar (getCodePage (), OS.MB_PRECOMPOSED, text.bytes, length, chars, length); |
| } |
| if (end == -1) end = length; |
| if (end > segments [0] && start <= segments [nSegments - 1]) { |
| int nLeadSegments = 0; |
| while (start - nLeadSegments > segments [nLeadSegments]) nLeadSegments++; |
| int segmentCount = nLeadSegments; |
| for (int i = start; i < end; i++) { |
| if (segmentCount < nSegments && i - segmentCount == segments [segmentCount]) { |
| ++segmentCount; |
| } else { |
| chars [i - segmentCount + nLeadSegments] = chars [i]; |
| } |
| } |
| length = end - start - segmentCount + nLeadSegments; |
| } |
| if (start != 0 || end != length) { |
| char [] newChars = new char [length]; |
| System.arraycopy(chars, start, newChars, 0, length); |
| return new TCHAR (getCodePage (), newChars, terminate); |
| } |
| return text; |
| } |
| |
| @Override |
| void deregister () { |
| super.deregister (); |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText != 0) display.removeControl (hwndText); |
| long /*int*/ hwndList = OS.GetDlgItem (handle, CBID_LIST); |
| if (hwndList != 0) display.removeControl (hwndList); |
| } |
| |
| /** |
| * Deselects the item at the given zero-relative index in the receiver's |
| * list. If the item at the index was already deselected, it remains |
| * deselected. Indices that are out of range are ignored. |
| * |
| * @param index the index of the item to deselect |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void deselect (int index) { |
| checkWidget (); |
| int selection = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCURSEL, 0, 0); |
| if (index != selection) return; |
| OS.SendMessage (handle, OS.CB_SETCURSEL, -1, 0); |
| sendEvent (SWT.Modify); |
| // widget could be disposed at this point |
| clearSegments (false); |
| clearSegmentsCount--; |
| } |
| |
| /** |
| * Deselects all selected items in the receiver's list. |
| * <p> |
| * Note: To clear the selection in the receiver's text field, |
| * use <code>clearSelection()</code>. |
| * </p> |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see #clearSelection |
| */ |
| public void deselectAll () { |
| checkWidget (); |
| OS.SendMessage (handle, OS.CB_SETCURSEL, -1, 0); |
| sendEvent (SWT.Modify); |
| // widget could be disposed at this point |
| clearSegments (false); |
| clearSegmentsCount--; |
| } |
| |
| @Override |
| boolean dragDetect (long /*int*/ hwnd, int x, int y, boolean filter, boolean [] detect, boolean [] consume) { |
| if (filter && (style & SWT.READ_ONLY) == 0) { |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText != 0) { |
| int [] start = new int [1], end = new int [1]; |
| OS.SendMessage (handle, OS.CB_GETEDITSEL, start, end); |
| if (start [0] != end [0]) { |
| long /*int*/ lParam = OS.MAKELPARAM (x, y); |
| int position = OS.LOWORD (OS.SendMessage (hwndText, OS.EM_CHARFROMPOS, 0, lParam)); |
| if (start [0] <= position && position < end [0]) { |
| if (super.dragDetect (hwnd, x, y, filter, detect, consume)) { |
| if (consume != null) consume [0] = true; |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| } |
| return super.dragDetect (hwnd, x, y, filter, detect, consume); |
| } |
| |
| /** |
| * Returns a point describing the location of the caret relative |
| * to the receiver. |
| * |
| * @return a point, the location of the caret |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.8 |
| */ |
| public Point getCaretLocation () { |
| checkWidget (); |
| return DPIUtil.autoScaleDown(getCaretLocationInPixels()); |
| } |
| |
| Point getCaretLocationInPixels () { |
| /* |
| * Bug in Windows. For some reason, Windows is unable |
| * to return the pixel coordinates of the last character |
| * in the widget. The fix is to temporarily insert a |
| * space, query the coordinates and delete the space. |
| * The selection is always an i-beam in this case because |
| * this is the only time the start of the selection can |
| * be equal to the last character position in the widget. |
| * If EM_POSFROMCHAR fails for any other reason, return |
| * pixel coordinates (0,0). |
| */ |
| int position = translateOffset (getCaretPosition ()); |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| long /*int*/ caretPos = OS.SendMessage (hwndText, OS.EM_POSFROMCHAR, position, 0); |
| if (caretPos == -1) { |
| caretPos = 0; |
| if (position >= OS.GetWindowTextLength (hwndText)) { |
| int cp = getCodePage (); |
| int [] start = new int [1], end = new int [1]; |
| OS.SendMessage (hwndText, OS.EM_GETSEL, start, end); |
| OS.SendMessage (hwndText, OS.EM_SETSEL, position, position); |
| /* |
| * Feature in Windows. When an edit control with ES_MULTILINE |
| * style that does not have the WS_VSCROLL style is full (i.e. |
| * there is no space at the end to draw any more characters), |
| * EM_REPLACESEL sends a WM_CHAR with a backspace character |
| * to remove any further text that is added. This is an |
| * implementation detail of the edit control that is unexpected |
| * and can cause endless recursion when EM_REPLACESEL is sent |
| * from a WM_CHAR handler. The fix is to ignore calling the |
| * handler from WM_CHAR. |
| */ |
| ignoreCharacter = ignoreModify = true; |
| OS.SendMessage (hwndText, OS.EM_REPLACESEL, 0, new TCHAR (cp, " ", true)); |
| caretPos = OS.SendMessage (hwndText, OS.EM_POSFROMCHAR, position, 0); |
| OS.SendMessage (hwndText, OS.EM_SETSEL, position, position + 1); |
| OS.SendMessage (hwndText, OS.EM_REPLACESEL, 0, new TCHAR (cp, "", true)); |
| ignoreCharacter = ignoreModify = false; |
| OS.SendMessage (hwndText, OS.EM_SETSEL, start [0], start [0]); |
| OS.SendMessage (hwndText, OS.EM_SETSEL, start [0], end [0]); |
| } |
| } |
| POINT point = new POINT (); |
| point.x = OS.GET_X_LPARAM (caretPos); |
| point.y = OS.GET_Y_LPARAM (caretPos); |
| OS.MapWindowPoints (hwndText, handle, point, 1); |
| return new Point (point.x, point.y); |
| } |
| |
| /** |
| * Returns the character position of the caret. |
| * <p> |
| * Indexing is zero based. |
| * </p> |
| * |
| * @return the position of the caret |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.8 |
| */ |
| public int getCaretPosition () { |
| checkWidget (); |
| int [] start = new int [1], end = new int [1]; |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| OS.SendMessage (hwndText, OS.EM_GETSEL, start, end); |
| /* |
| * In Windows, there is no API to get the position of the caret |
| * when the selection is not an i-beam. The best that can be done |
| * is to query the pixel position of the current caret and compare |
| * it to the pixel position of the start and end of the selection. |
| * |
| * NOTE: This does not work when the i-beam belongs to another |
| * control. In this case, guess that the i-beam is at the start |
| * of the selection. |
| */ |
| int caret = start [0]; |
| if (start [0] != end [0]) { |
| if (!OS.IsWinCE) { |
| int idThread = OS.GetWindowThreadProcessId (hwndText, null); |
| GUITHREADINFO lpgui = new GUITHREADINFO (); |
| lpgui.cbSize = GUITHREADINFO.sizeof; |
| if (OS.GetGUIThreadInfo (idThread, lpgui)) { |
| if (lpgui.hwndCaret == hwndText || lpgui.hwndCaret == 0) { |
| POINT ptCurrentPos = new POINT (); |
| if (OS.GetCaretPos (ptCurrentPos)) { |
| long /*int*/ endPos = OS.SendMessage (hwndText, OS.EM_POSFROMCHAR, end [0], 0); |
| if (endPos == -1) { |
| long /*int*/ startPos = OS.SendMessage (hwndText, OS.EM_POSFROMCHAR, start [0], 0); |
| int startX = OS.GET_X_LPARAM (startPos); |
| if (ptCurrentPos.x > startX) caret = end [0]; |
| } else { |
| int endX = OS.GET_X_LPARAM (endPos); |
| if (ptCurrentPos.x >= endX) caret = end [0]; |
| } |
| } |
| } |
| } |
| } |
| } |
| if (!OS.IsUnicode && OS.IsDBLocale) { |
| caret = mbcsToWcsPos (caret); |
| } |
| return untranslateOffset (caret); |
| } |
| |
| /** |
| * Returns the item at the given, zero-relative index in the |
| * receiver's list. Throws an exception if the index is out |
| * of range. |
| * |
| * @param index the index of the item to return |
| * @return the item at the given index |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public String getItem (int index) { |
| checkWidget (); |
| int length = (int)/*64*/OS.SendMessage (handle, OS.CB_GETLBTEXTLEN, index, 0); |
| if (length != OS.CB_ERR) { |
| if (hooks (SWT.Segments) || filters (SWT.Segments) || (state & HAS_AUTO_DIRECTION) != 0) return items [index]; |
| TCHAR buffer = new TCHAR (getCodePage (), length + 1); |
| int result = (int)/*64*/OS.SendMessage (handle, OS.CB_GETLBTEXT, index, buffer); |
| if (result != OS.CB_ERR) return buffer.toString (0, length); |
| } |
| int count = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCOUNT, 0, 0); |
| if (0 <= index && index < count) error (SWT.ERROR_CANNOT_GET_ITEM); |
| error (SWT.ERROR_INVALID_RANGE); |
| return ""; |
| } |
| |
| /** |
| * Returns the number of items contained in the receiver's list. |
| * |
| * @return the number of items |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int getItemCount () { |
| checkWidget (); |
| int count = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCOUNT, 0, 0); |
| if (count == OS.CB_ERR) error (SWT.ERROR_CANNOT_GET_COUNT); |
| return count; |
| } |
| |
| /** |
| * Returns the height of the area which would be used to |
| * display <em>one</em> of the items in the receiver's list. |
| * |
| * @return the height of one item |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int getItemHeight () { |
| checkWidget (); |
| return DPIUtil.autoScaleDown(getItemHeightInPixels()); |
| } |
| |
| int getItemHeightInPixels () { |
| int result = (int)/*64*/OS.SendMessage (handle, OS.CB_GETITEMHEIGHT, 0, 0); |
| if (result == OS.CB_ERR) error (SWT.ERROR_CANNOT_GET_ITEM_HEIGHT); |
| return result; |
| } |
| |
| /** |
| * Returns a (possibly empty) array of <code>String</code>s which are |
| * the items in the receiver's list. |
| * <p> |
| * Note: This is not the actual structure used by the receiver |
| * to maintain its list of items, so modifying the array will |
| * not affect the receiver. |
| * </p> |
| * |
| * @return the items in the receiver's list |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public String [] getItems () { |
| checkWidget (); |
| String [] result; |
| int count = getItemCount (); |
| result = new String [count]; |
| for (int i=0; i<count; i++) result [i] = getItem (i); |
| return result; |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver's list is visible, |
| * and <code>false</code> otherwise. |
| * <p> |
| * If one of the receiver's ancestors is not visible or some |
| * other condition makes the receiver not visible, this method |
| * may still indicate that it is considered visible even though |
| * it may not actually be showing. |
| * </p> |
| * |
| * @return the receiver's list's visibility state |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.4 |
| */ |
| public boolean getListVisible () { |
| checkWidget (); |
| if ((style & SWT.DROP_DOWN) != 0) { |
| return OS.SendMessage (handle, OS.CB_GETDROPPEDSTATE, 0, 0) != 0; |
| } |
| return true; |
| } |
| |
| @Override |
| String getNameText () { |
| return getText (); |
| } |
| |
| /** |
| * Marks the receiver's list as visible if the argument is <code>true</code>, |
| * and marks it invisible otherwise. |
| * <p> |
| * If one of the receiver's ancestors is not visible or some |
| * other condition makes the receiver not visible, marking |
| * it visible may not actually cause it to be displayed. |
| * </p> |
| * |
| * @param visible the new visibility state |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.4 |
| */ |
| public void setListVisible (boolean visible) { |
| checkWidget (); |
| OS.SendMessage (handle, OS.CB_SHOWDROPDOWN, visible ? 1 : 0, 0); |
| } |
| |
| /** |
| * Returns the orientation of the receiver. |
| * |
| * @return the orientation style |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 2.1.2 |
| */ |
| @Override |
| public int getOrientation () { |
| return super.getOrientation (); |
| } |
| |
| Event getSegments (String string) { |
| Event event = null; |
| if (hooks (SWT.Segments) || filters (SWT.Segments)) { |
| event = new Event (); |
| event.text = string; |
| sendEvent (SWT.Segments, event); |
| if (event != null && event.segments != null) { |
| for (int i = 1, segmentCount = event.segments.length, lineLength = string == null ? 0 : string.length(); i < segmentCount; i++) { |
| if (event.segments[i] < event.segments[i - 1] || event.segments[i] > lineLength) { |
| SWT.error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| } |
| } |
| } |
| if ((state & HAS_AUTO_DIRECTION) != 0) { |
| int direction = BidiUtil.resolveTextDirection(string); |
| if (direction == SWT.NONE) { |
| /* |
| * Force adding a UCC even when no strong characters are found. |
| * Otherwise, the widget would keep the old direction, which might be |
| * inappropriate for the new text. |
| */ |
| direction = (style & SWT.RIGHT_TO_LEFT) != 0 ? SWT.RIGHT_TO_LEFT : SWT.LEFT_TO_RIGHT; |
| } |
| int [] oldSegments = null; |
| char [] oldSegmentsChars = null; |
| if (event == null) { |
| event = new Event (); |
| } else { |
| oldSegments = event.segments; |
| oldSegmentsChars = event.segmentsChars; |
| } |
| int nSegments = oldSegments == null ? 0 : oldSegments.length; |
| event.segments = new int [nSegments + 1]; |
| event.segmentsChars = new char [nSegments + 1]; |
| if (oldSegments != null) { |
| System.arraycopy(oldSegments, 0, event.segments, 1, nSegments); |
| } |
| if (oldSegmentsChars != null) { |
| System.arraycopy(oldSegmentsChars, 0, event.segmentsChars, 1, nSegments); |
| } |
| event.segments [0] = 0; |
| event.segmentsChars [0] = direction == SWT.RIGHT_TO_LEFT ? RLE : LRE; |
| } |
| return event; |
| } |
| |
| String getSegmentsText (String text, Event event) { |
| if (text == null || event == null) return text; |
| int[] segments = event.segments; |
| if (segments == null) return text; |
| int nSegments = segments.length; |
| if (nSegments == 0) return text; |
| char[] segmentsChars = /*event == null ? this.segmentsChars : */event.segmentsChars; |
| int length = text.length(); |
| char[] oldChars = new char[length]; |
| text.getChars (0, length, oldChars, 0); |
| char[] newChars = new char[length + nSegments]; |
| int charCount = 0, segmentCount = 0; |
| char defaultSeparator = getOrientation () == SWT.RIGHT_TO_LEFT ? RTL_MARK : LTR_MARK; |
| while (charCount < length) { |
| if (segmentCount < nSegments && charCount == segments[segmentCount]) { |
| char separator = segmentsChars != null && segmentsChars.length > segmentCount ? segmentsChars[segmentCount] : defaultSeparator; |
| newChars[charCount + segmentCount++] = separator; |
| } else { |
| newChars[charCount + segmentCount] = oldChars[charCount++]; |
| } |
| } |
| while (segmentCount < nSegments) { |
| segments[segmentCount] = charCount; |
| char separator = segmentsChars != null && segmentsChars.length > segmentCount ? segmentsChars[segmentCount] : defaultSeparator; |
| newChars[charCount + segmentCount++] = separator; |
| } |
| return new String(newChars, 0, newChars.length); |
| } |
| |
| /** |
| * Returns a <code>Point</code> whose x coordinate is the |
| * character position representing the start of the selection |
| * in the receiver's text field, and whose y coordinate is the |
| * character position representing the end of the selection. |
| * An "empty" selection is indicated by the x and y coordinates |
| * having the same value. |
| * <p> |
| * Indexing is zero based. The range of a selection is from |
| * 0..N where N is the number of characters in the widget. |
| * </p> |
| * |
| * @return a point representing the selection start and end |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public Point getSelection () { |
| checkWidget (); |
| if ((style & SWT.DROP_DOWN) != 0 && (style & SWT.READ_ONLY) != 0) { |
| return new Point (0, OS.GetWindowTextLength (handle)); |
| } |
| int [] start = new int [1], end = new int [1]; |
| OS.SendMessage (handle, OS.CB_GETEDITSEL, start, end); |
| if (!OS.IsUnicode && OS.IsDBLocale) { |
| start [0] = mbcsToWcsPos (start [0]); |
| end [0] = mbcsToWcsPos (end [0]); |
| } |
| return new Point (untranslateOffset (start [0]), untranslateOffset (end [0])); |
| } |
| |
| /** |
| * Returns the zero-relative index of the item which is currently |
| * selected in the receiver's list, or -1 if no item is selected. |
| * |
| * @return the index of the selected item |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int getSelectionIndex () { |
| checkWidget (); |
| if (noSelection) return -1; |
| return (int)/*64*/OS.SendMessage (handle, OS.CB_GETCURSEL, 0, 0); |
| } |
| |
| /** |
| * Returns a string containing a copy of the contents of the |
| * receiver's text field, or an empty string if there are no |
| * contents. |
| * |
| * @return the receiver's text |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public String getText () { |
| checkWidget (); |
| int length = OS.GetWindowTextLength (handle); |
| if (length == 0) return ""; |
| TCHAR buffer = new TCHAR (getCodePage (), length + 1); |
| OS.GetWindowText (handle, buffer, length + 1); |
| if (segments != null) { |
| buffer = deprocessText (buffer, 0, -1, false); |
| return buffer.toString (); |
| } |
| |
| return buffer.toString (0, length); |
| } |
| |
| /** |
| * Returns the height of the receivers's text field. |
| * |
| * @return the text height |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int getTextHeight () { |
| checkWidget (); |
| return DPIUtil.autoScaleDown(getTextHeightInPixels()); |
| } |
| |
| int getTextHeightInPixels () { |
| COMBOBOXINFO pcbi = new COMBOBOXINFO (); |
| pcbi.cbSize = COMBOBOXINFO.sizeof; |
| if (((style & SWT.SIMPLE) == 0) && !OS.IsWinCE && OS.GetComboBoxInfo (handle, pcbi)) { |
| return (pcbi.buttonBottom - pcbi.buttonTop) + pcbi.buttonTop * 2; |
| } |
| int result = (int)/*64*/OS.SendMessage (handle, OS.CB_GETITEMHEIGHT, -1, 0); |
| if (result == OS.CB_ERR) error (SWT.ERROR_CANNOT_GET_ITEM_HEIGHT); |
| return (style & SWT.DROP_DOWN) != 0 ? result + 6 : result + 10; |
| } |
| |
| /** |
| * Returns the maximum number of characters that the receiver's |
| * text field is capable of holding. If this has not been changed |
| * by <code>setTextLimit()</code>, it will be the constant |
| * <code>Combo.LIMIT</code>. |
| * |
| * @return the text limit |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see #LIMIT |
| */ |
| public int getTextLimit () { |
| checkWidget (); |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText == 0) return LIMIT; |
| int/*64*/ limit = (int)/*64*/OS.SendMessage (hwndText, OS.EM_GETLIMITTEXT, 0, 0) & 0x7FFFFFFF; |
| if (segments != null && limit < LIMIT) limit = Math.max (1, limit - segments.length); |
| return limit; |
| } |
| |
| /** |
| * Gets the number of items that are visible in the drop |
| * down portion of the receiver's list. |
| * <p> |
| * Note: This operation is a hint and is not supported on |
| * platforms that do not have this concept. |
| * </p> |
| * |
| * @return the number of items that are visible |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.0 |
| */ |
| public int getVisibleItemCount () { |
| checkWidget (); |
| return visibleCount; |
| } |
| |
| @Override |
| boolean hasFocus () { |
| long /*int*/ hwndFocus = OS.GetFocus (); |
| if (hwndFocus == handle) return true; |
| if (hwndFocus == 0) return false; |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndFocus == hwndText) return true; |
| long /*int*/ hwndList = OS.GetDlgItem (handle, CBID_LIST); |
| if (hwndFocus == hwndList) return true; |
| return false; |
| } |
| |
| /** |
| * Searches the receiver's list starting at the first item |
| * (index 0) until an item is found that is equal to the |
| * argument, and returns the index of that item. If no item |
| * is found, returns -1. |
| * |
| * @param string the search item |
| * @return the index of the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int indexOf (String string) { |
| return indexOf (string, 0); |
| } |
| |
| /** |
| * Searches the receiver's list starting at the given, |
| * zero-relative index until an item is found that is equal |
| * to the argument, and returns the index of that item. If |
| * no item is found or the starting index is out of range, |
| * returns -1. |
| * |
| * @param string the search item |
| * @param start the zero-relative index at which to begin the search |
| * @return the index of the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int indexOf (String string, int start) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| |
| /* |
| * Bug in Windows. For some reason, CB_FINDSTRINGEXACT |
| * will not find empty strings even though it is legal |
| * to insert an empty string into a combo. The fix is |
| * to search the combo, an item at a time. |
| */ |
| if (string.length () == 0) { |
| int count = getItemCount (); |
| for (int i=start; i<count; i++) { |
| if (string.equals (getItem (i))) return i; |
| } |
| return -1; |
| } |
| |
| /* Use CB_FINDSTRINGEXACT to search for the item */ |
| int count = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCOUNT, 0, 0); |
| if (!(0 <= start && start < count)) return -1; |
| int index = start - 1, last = 0; |
| TCHAR buffer = new TCHAR (getCodePage (), string, true); |
| do { |
| index = (int)/*64*/OS.SendMessage (handle, OS.CB_FINDSTRINGEXACT, last = index, buffer); |
| if (index == OS.CB_ERR || index <= last) return -1; |
| } while (!string.equals (getItem (index))); |
| return index; |
| } |
| |
| int mbcsToWcsPos (int mbcsPos) { |
| if (mbcsPos <= 0) return 0; |
| if (OS.IsUnicode) return mbcsPos; |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText == 0) return mbcsPos; |
| int mbcsSize = OS.GetWindowTextLengthA (hwndText); |
| if (mbcsSize == 0) return 0; |
| if (mbcsPos >= mbcsSize) return mbcsSize; |
| byte [] buffer = new byte [mbcsSize + 1]; |
| OS.GetWindowTextA (hwndText, buffer, mbcsSize + 1); |
| return OS.MultiByteToWideChar (getCodePage (), OS.MB_PRECOMPOSED, buffer, mbcsPos, null, 0); |
| } |
| |
| /** |
| * Pastes text from clipboard. |
| * <p> |
| * The selected text is deleted from the widget |
| * and new text inserted from the clipboard. |
| * </p> |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 2.1 |
| */ |
| public void paste () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) return; |
| OS.SendMessage (handle, OS.WM_PASTE, 0, 0); |
| } |
| |
| @Override |
| void register () { |
| super.register (); |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText != 0) display.addControl (hwndText, this); |
| long /*int*/ hwndList = OS.GetDlgItem (handle, CBID_LIST); |
| if (hwndList != 0) display.addControl (hwndList, this); |
| } |
| |
| /** |
| * Removes the item from the receiver's list at the given |
| * zero-relative index. |
| * |
| * @param index the index for the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void remove (int index) { |
| checkWidget (); |
| remove (index, true); |
| } |
| |
| void remove (int index, boolean notify) { |
| TCHAR buffer = null; |
| if ((style & SWT.H_SCROLL) != 0) { |
| int length = (int)/*64*/OS.SendMessage (handle, OS.CB_GETLBTEXTLEN, index, 0); |
| if (length == OS.CB_ERR) { |
| int count = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCOUNT, 0, 0); |
| if (0 <= index && index < count) error (SWT.ERROR_ITEM_NOT_REMOVED); |
| error (SWT.ERROR_INVALID_RANGE); |
| } |
| buffer = new TCHAR (getCodePage (), length + 1); |
| int result = (int)/*64*/OS.SendMessage (handle, OS.CB_GETLBTEXT, index, buffer); |
| if (result == OS.CB_ERR) { |
| int count = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCOUNT, 0, 0); |
| if (0 <= index && index < count) error (SWT.ERROR_ITEM_NOT_REMOVED); |
| error (SWT.ERROR_INVALID_RANGE); |
| } |
| } |
| int length = OS.GetWindowTextLength (handle); |
| int code = (int)/*64*/OS.SendMessage (handle, OS.CB_DELETESTRING, index, 0); |
| if (code == OS.CB_ERR) { |
| int count = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCOUNT, 0, 0); |
| if (0 <= index && index < count) error (SWT.ERROR_ITEM_NOT_REMOVED); |
| error (SWT.ERROR_INVALID_RANGE); |
| } |
| else if (code == 0) { |
| /* |
| * Bug in Windows, when combo had exactly one item, that was |
| * currently selected & is removed, the combo box does not clear the |
| * text area. The fix is to reset contents of the Combo. Bug#440671 |
| */ |
| OS.SendMessage (handle, OS.CB_RESETCONTENT, 0, 0); |
| } |
| if ((style & SWT.H_SCROLL) != 0) setScrollWidth (buffer, true); |
| if (notify && length != OS.GetWindowTextLength (handle)) { |
| sendEvent (SWT.Modify); |
| if (isDisposed ()) return; |
| } |
| } |
| |
| /** |
| * Removes the items from the receiver's list which are |
| * between the given zero-relative start and end |
| * indices (inclusive). |
| * |
| * @param start the start of the range |
| * @param end the end of the range |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_RANGE - if either the start or end are not between 0 and the number of elements in the list minus 1 (inclusive)</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void remove (int start, int end) { |
| checkWidget (); |
| if (start > end) return; |
| int count = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCOUNT, 0, 0); |
| if (!(0 <= start && start <= end && end < count)) { |
| error (SWT.ERROR_INVALID_RANGE); |
| } |
| int textLength = OS.GetWindowTextLength (handle); |
| RECT rect = null; |
| long /*int*/ hDC = 0, oldFont = 0, newFont = 0; |
| int newWidth = 0; |
| if ((style & SWT.H_SCROLL) != 0) { |
| rect = new RECT (); |
| hDC = OS.GetDC (handle); |
| newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0); |
| if (newFont != 0) oldFont = OS.SelectObject (hDC, newFont); |
| } |
| int cp = getCodePage (); |
| int flags = OS.DT_CALCRECT | OS.DT_SINGLELINE | OS.DT_NOPREFIX; |
| for (int i=start; i<=end; i++) { |
| TCHAR buffer = null; |
| if ((style & SWT.H_SCROLL) != 0) { |
| int length = (int)/*64*/OS.SendMessage (handle, OS.CB_GETLBTEXTLEN, start, 0); |
| if (length == OS.CB_ERR) break; |
| buffer = new TCHAR (cp, length + 1); |
| int result = (int)/*64*/OS.SendMessage (handle, OS.CB_GETLBTEXT, start, buffer); |
| if (result == OS.CB_ERR) break; |
| } |
| int result = (int)/*64*/OS.SendMessage (handle, OS.CB_DELETESTRING, start, 0); |
| if (result == OS.CB_ERR) { |
| error (SWT.ERROR_ITEM_NOT_REMOVED); |
| } |
| else if (result == 0) { |
| /* |
| * Bug in Windows, when combo had exactly one item, that was |
| * currently selected & is removed, the combo box does not clear the |
| * text area. The fix is to reset contents of the Combo. Bug#440671 |
| */ |
| OS.SendMessage (handle, OS.CB_RESETCONTENT, 0, 0); |
| } |
| if ((style & SWT.H_SCROLL) != 0) { |
| OS.DrawText (hDC, buffer, -1, rect, flags); |
| newWidth = Math.max (newWidth, rect.right - rect.left); |
| } |
| } |
| if ((style & SWT.H_SCROLL) != 0) { |
| if (newFont != 0) OS.SelectObject (hDC, oldFont); |
| OS.ReleaseDC (handle, hDC); |
| setScrollWidth (newWidth, false); |
| } |
| if (textLength != OS.GetWindowTextLength (handle)) { |
| sendEvent (SWT.Modify); |
| if (isDisposed ()) return; |
| } |
| } |
| |
| /** |
| * Searches the receiver's list starting at the first item |
| * until an item is found that is equal to the argument, |
| * and removes that item from the list. |
| * |
| * @param string the item to remove |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the string is not found in the list</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void remove (String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| int index = indexOf (string, 0); |
| if (index == -1) error (SWT.ERROR_INVALID_ARGUMENT); |
| remove (index); |
| } |
| |
| /** |
| * Removes all of the items from the receiver's list and clear the |
| * contents of receiver's text field. |
| * <p> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void removeAll () { |
| checkWidget (); |
| OS.SendMessage (handle, OS.CB_RESETCONTENT, 0, 0); |
| sendEvent (SWT.Modify); |
| if (isDisposed ()) return; |
| if ((style & SWT.H_SCROLL) != 0) setScrollWidth (0); |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the receiver's text is modified. |
| * |
| * @param listener the listener which should no longer be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see ModifyListener |
| * @see #addModifyListener |
| */ |
| public void removeModifyListener (ModifyListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Modify, listener); |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the receiver's text is modified. |
| * |
| * @param listener the listener which should no longer be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see SegmentEvent |
| * @see SegmentListener |
| * @see #addSegmentListener |
| * |
| * @since 3.103 |
| */ |
| public void removeSegmentListener (SegmentListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| eventTable.unhook (SWT.Segments, listener); |
| int selection = OS.CB_ERR; |
| if (!noSelection) { |
| selection = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCURSEL, 0, 0); |
| } |
| clearSegments (true); |
| applyEditSegments (); |
| applyListSegments (); |
| if (selection != OS.CB_ERR) { |
| OS.SendMessage (handle, OS.CB_SETCURSEL, selection, 0); |
| } |
| } |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the user changes the receiver's selection. |
| * |
| * @param listener the listener which should no longer be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see SelectionListener |
| * @see #addSelectionListener |
| */ |
| public void removeSelectionListener (SelectionListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Selection, listener); |
| eventTable.unhook (SWT.DefaultSelection,listener); |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the control is verified. |
| * |
| * @param listener the listener which should no longer be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see VerifyListener |
| * @see #addVerifyListener |
| * |
| * @since 3.1 |
| */ |
| public void removeVerifyListener (VerifyListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Verify, listener); |
| } |
| |
| @Override |
| boolean sendKeyEvent (int type, int msg, long /*int*/ wParam, long /*int*/ lParam, Event event) { |
| if (!super.sendKeyEvent (type, msg, wParam, lParam, event)) { |
| return false; |
| } |
| if ((style & SWT.READ_ONLY) != 0) return true; |
| if (type != SWT.KeyDown) return true; |
| if (msg != OS.WM_CHAR && msg != OS.WM_KEYDOWN && msg != OS.WM_IME_CHAR) { |
| return true; |
| } |
| if (event.character == 0) return true; |
| if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return true; |
| char key = event.character; |
| int stateMask = event.stateMask; |
| |
| /* |
| * Disable all magic keys that could modify the text |
| * and don't send events when Alt, Shift or Ctrl is |
| * pressed. |
| */ |
| switch (msg) { |
| case OS.WM_CHAR: |
| if (key != 0x08 && key != 0x7F && key != '\r' && key != '\t' && key != '\n') break; |
| // FALL THROUGH |
| case OS.WM_KEYDOWN: |
| if ((stateMask & (SWT.ALT | SWT.SHIFT | SWT.CONTROL)) != 0) return false; |
| break; |
| } |
| |
| /* |
| * Feature in Windows. If the left button is down in |
| * the text widget, it refuses the character. The fix |
| * is to detect this case and avoid sending a verify |
| * event. |
| */ |
| if (OS.GetKeyState (OS.VK_LBUTTON) < 0) { |
| if (OS.GetDlgItem (handle, CBID_EDIT) == OS.GetCapture()) return true; |
| } |
| |
| /* Verify the character */ |
| String oldText = ""; |
| int [] start = new int [1], end = new int [1]; |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText == 0) return true; |
| OS.SendMessage (hwndText, OS.EM_GETSEL, start, end); |
| switch (key) { |
| case 0x08: /* Bs */ |
| if (start [0] == end [0]) { |
| if (start [0] == 0) return true; |
| start [0] = start [0] - 1; |
| if (!OS.IsUnicode && OS.IsDBLocale) { |
| int [] newStart = new int [1], newEnd = new int [1]; |
| OS.SendMessage (hwndText, OS.EM_SETSEL, start [0], end [0]); |
| OS.SendMessage (hwndText, OS.EM_GETSEL, newStart, newEnd); |
| if (start [0] != newStart [0]) start [0] = start [0] - 1; |
| } |
| start [0] = Math.max (start [0], 0); |
| } |
| break; |
| case 0x7F: /* Del */ |
| if (start [0] == end [0]) { |
| int length = OS.GetWindowTextLength (hwndText); |
| if (start [0] == length) return true; |
| end [0] = end [0] + 1; |
| if (!OS.IsUnicode && OS.IsDBLocale) { |
| int [] newStart = new int [1], newEnd = new int [1]; |
| OS.SendMessage (hwndText, OS.EM_SETSEL, start [0], end [0]); |
| OS.SendMessage (hwndText, OS.EM_GETSEL, newStart, newEnd); |
| if (end [0] != newEnd [0]) end [0] = end [0] + 1; |
| } |
| end [0] = Math.min (end [0], length); |
| } |
| break; |
| case '\r': /* Return */ |
| return true; |
| default: /* Tab and other characters */ |
| if (key != '\t' && key < 0x20) return true; |
| oldText = new String (new char [] {key}); |
| break; |
| } |
| String newText = verifyText (oldText, start [0], end [0], event); |
| if (newText == null) return false; |
| if (newText == oldText) return true; |
| TCHAR buffer = new TCHAR (getCodePage (), newText, true); |
| OS.SendMessage (hwndText, OS.EM_SETSEL, start [0], end [0]); |
| OS.SendMessage (hwndText, OS.EM_REPLACESEL, 0, buffer); |
| return false; |
| } |
| |
| /** |
| * Selects the item at the given zero-relative index in the receiver's |
| * list. If the item at the index was already selected, it remains |
| * selected. Indices that are out of range are ignored. |
| * |
| * @param index the index of the item to select |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void select (int index) { |
| checkWidget (); |
| int count = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCOUNT, 0, 0); |
| if (0 <= index && index < count) { |
| int selection = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCURSEL, 0, 0); |
| int code = (int)/*64*/OS.SendMessage (handle, OS.CB_SETCURSEL, index, 0); |
| if (code != OS.CB_ERR && code != selection) { |
| sendEvent (SWT.Modify); |
| // widget could be disposed at this point |
| } |
| } |
| } |
| |
| @Override |
| void setBackgroundImage (long /*int*/ hBitmap) { |
| super.setBackgroundImage (hBitmap); |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText != 0) OS.InvalidateRect (hwndText, null, true); |
| long /*int*/ hwndList = OS.GetDlgItem (handle, CBID_LIST); |
| if (hwndList != 0) OS.InvalidateRect (hwndList, null, true); |
| } |
| |
| @Override |
| void setBackgroundPixel (int pixel) { |
| super.setBackgroundPixel (pixel); |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText != 0) OS.InvalidateRect (hwndText, null, true); |
| long /*int*/ hwndList = OS.GetDlgItem (handle, CBID_LIST); |
| if (hwndList != 0) OS.InvalidateRect (hwndList, null, true); |
| } |
| |
| @Override |
| void setBoundsInPixels (int x, int y, int width, int height, int flags) { |
| /* |
| * Feature in Windows. If the combo box has the CBS_DROPDOWN |
| * or CBS_DROPDOWNLIST style, Windows uses the height that the |
| * programmer sets in SetWindowPos () to control height of the |
| * drop down list. When the width is non-zero, Windows remembers |
| * this value and sets the height to be the height of the text |
| * field part of the combo box. If the width is zero, Windows |
| * allows the height to have any value. Therefore, when the |
| * programmer sets and then queries the height, the values can |
| * be different depending on the width. The problem occurs when |
| * the programmer uses computeSize () to determine the preferred |
| * height (always the height of the text field) and then uses |
| * this value to set the height of the combo box. The result |
| * is a combo box with a zero size drop down list. The fix, is |
| * to always set the height to show a fixed number of combo box |
| * items and ignore the height value that the programmer supplies. |
| */ |
| if ((style & SWT.DROP_DOWN) != 0) { |
| int visibleCount = getItemCount() == 0 ? VISIBLE_COUNT : this.visibleCount; |
| height = getTextHeightInPixels () + (getItemHeightInPixels () * visibleCount) + 2; |
| /* |
| * Feature in Windows. When a drop down combo box is resized, |
| * the combo box resizes the height of the text field and uses |
| * the height provided in SetWindowPos () to determine the height |
| * of the drop down list. For some reason, the combo box redraws |
| * the whole area, not just the text field. The fix is to set the |
| * SWP_NOSIZE bits when the height of text field and the drop down |
| * list is the same as the requested height. |
| * |
| * NOTE: Setting the width of a combo box to zero does not update |
| * the width of the drop down control rect. If the width of the |
| * combo box is zero, then do not set SWP_NOSIZE. |
| */ |
| RECT rect = new RECT (); |
| OS.GetWindowRect (handle, rect); |
| if (rect.right - rect.left != 0) { |
| if (OS.SendMessage (handle, OS.CB_GETDROPPEDCONTROLRECT, 0, rect) != 0) { |
| int oldWidth = rect.right - rect.left, oldHeight = rect.bottom - rect.top; |
| if (oldWidth == width && oldHeight == height) flags |= OS.SWP_NOSIZE; |
| } |
| } |
| SetWindowPos (handle, 0, x, y, width, height, flags); |
| } else { |
| super.setBoundsInPixels (x, y, width, height, flags); |
| } |
| } |
| |
| @Override |
| public void setFont (Font font) { |
| checkWidget (); |
| |
| /* |
| * Feature in Windows. For some reason, in a editable combo box, |
| * when WM_SETFONT is used to set the font of the control |
| * and the current text does not match an item in the |
| * list, Windows selects the item that most closely matches the |
| * contents of the combo. The fix is to lock the current text |
| * by ignoring all WM_SETTEXT messages during processing of |
| * WM_SETFONT. |
| */ |
| boolean oldLockText = lockText; |
| if ((style & SWT.READ_ONLY) == 0) lockText = true; |
| super.setFont (font); |
| if ((style & SWT.READ_ONLY) == 0) lockText = oldLockText; |
| if ((style & SWT.H_SCROLL) != 0) setScrollWidth (); |
| } |
| |
| @Override |
| void setForegroundPixel (int pixel) { |
| super.setForegroundPixel (pixel); |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText != 0) OS.InvalidateRect (hwndText, null, true); |
| long /*int*/ hwndList = OS.GetDlgItem (handle, CBID_LIST); |
| if (hwndList != 0) OS.InvalidateRect (hwndList, null, true); |
| } |
| |
| /** |
| * Sets the text of the item in the receiver's list at the given |
| * zero-relative index to the string argument. |
| * |
| * @param index the index for the item |
| * @param string the new text for the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</li> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void setItem (int index, String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| int selection = getSelectionIndex (); |
| remove (index, false); |
| if (isDisposed ()) return; |
| add (string, index); |
| if (selection != -1) select (selection); |
| } |
| |
| /** |
| * Sets the receiver's list to be the given array of items. |
| * |
| * @param items the array of items |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the items array is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if an item in the items array is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void setItems (String... items) { |
| checkWidget (); |
| if (items == null) error (SWT.ERROR_NULL_ARGUMENT); |
| for (int i=0; i<items.length; i++) { |
| if (items [i] == null) error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| RECT rect = null; |
| long /*int*/ hDC = 0, oldFont = 0, newFont = 0; |
| int newWidth = 0; |
| if ((style & SWT.H_SCROLL) != 0) { |
| rect = new RECT (); |
| hDC = OS.GetDC (handle); |
| newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0); |
| if (newFont != 0) oldFont = OS.SelectObject (hDC, newFont); |
| setScrollWidth (0); |
| } |
| OS.SendMessage (handle, OS.CB_RESETCONTENT, 0, 0); |
| int codePage = getCodePage (); |
| for (int i=0; i<items.length; i++) { |
| String string = items [i]; |
| TCHAR buffer = new TCHAR (codePage, string, true); |
| int code = (int)/*64*/OS.SendMessage (handle, OS.CB_ADDSTRING, 0, buffer); |
| if (code == OS.CB_ERR) error (SWT.ERROR_ITEM_NOT_ADDED); |
| if (code == OS.CB_ERRSPACE) error (SWT.ERROR_ITEM_NOT_ADDED); |
| if ((style & SWT.H_SCROLL) != 0) { |
| int flags = OS.DT_CALCRECT | OS.DT_SINGLELINE | OS.DT_NOPREFIX; |
| OS.DrawText (hDC, buffer, -1, rect, flags); |
| newWidth = Math.max (newWidth, rect.right - rect.left); |
| } |
| } |
| if ((style & SWT.H_SCROLL) != 0) { |
| if (newFont != 0) OS.SelectObject (hDC, oldFont); |
| OS.ReleaseDC (handle, hDC); |
| setScrollWidth (newWidth + 3); |
| } |
| sendEvent (SWT.Modify); |
| // widget could be disposed at this point |
| } |
| |
| /** |
| * Sets the orientation of the receiver, which must be one |
| * of the constants <code>SWT.LEFT_TO_RIGHT</code> or <code>SWT.RIGHT_TO_LEFT</code>. |
| * <p> |
| * |
| * @param orientation new orientation style |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 2.1.2 |
| */ |
| @Override |
| public void setOrientation (int orientation) { |
| super.setOrientation (orientation); |
| } |
| |
| void setScrollWidth () { |
| int newWidth = 0; |
| RECT rect = new RECT (); |
| long /*int*/ newFont, oldFont = 0; |
| long /*int*/ hDC = OS.GetDC (handle); |
| newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0); |
| if (newFont != 0) oldFont = OS.SelectObject (hDC, newFont); |
| int cp = getCodePage (); |
| int count = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCOUNT, 0, 0); |
| int flags = OS.DT_CALCRECT | OS.DT_SINGLELINE | OS.DT_NOPREFIX; |
| for (int i=0; i<count; i++) { |
| int length = (int)/*64*/OS.SendMessage (handle, OS.CB_GETLBTEXTLEN, i, 0); |
| if (length != OS.CB_ERR) { |
| TCHAR buffer = new TCHAR (cp, length + 1); |
| int result = (int)/*64*/OS.SendMessage (handle, OS.CB_GETLBTEXT, i, buffer); |
| if (result != OS.CB_ERR) { |
| OS.DrawText (hDC, buffer, -1, rect, flags); |
| newWidth = Math.max (newWidth, rect.right - rect.left); |
| } |
| } |
| } |
| if (newFont != 0) OS.SelectObject (hDC, oldFont); |
| OS.ReleaseDC (handle, hDC); |
| setScrollWidth (newWidth + 3); |
| } |
| |
| void setScrollWidth (int scrollWidth) { |
| this.scrollWidth = scrollWidth; |
| if ((style & SWT.SIMPLE) != 0) { |
| OS.SendMessage (handle, OS.CB_SETHORIZONTALEXTENT, scrollWidth, 0); |
| return; |
| } |
| boolean scroll = false; |
| int count = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCOUNT, 0, 0); |
| if (count > 3) { |
| int maxWidth = 0; |
| if (OS.IsWinCE || OS.WIN32_VERSION < OS.VERSION (4, 10)) { |
| RECT rect = new RECT (); |
| OS.SystemParametersInfo (OS.SPI_GETWORKAREA, 0, rect, 0); |
| maxWidth = (rect.right - rect.left) / 4; |
| } else { |
| long /*int*/ hmonitor = OS.MonitorFromWindow (handle, OS.MONITOR_DEFAULTTONEAREST); |
| MONITORINFO lpmi = new MONITORINFO (); |
| lpmi.cbSize = MONITORINFO.sizeof; |
| OS.GetMonitorInfo (hmonitor, lpmi); |
| maxWidth = (lpmi.rcWork_right - lpmi.rcWork_left) / 4; |
| } |
| scroll = scrollWidth > maxWidth; |
| } |
| /* |
| * Feature in Windows. For some reason, in a editable combo box, |
| * when CB_SETDROPPEDWIDTH is used to set the width of the drop |
| * down list and the current text does not match an item in the |
| * list, Windows selects the item that most closely matches the |
| * contents of the combo. The fix is to lock the current text |
| * by ignoring all WM_SETTEXT messages during processing of |
| * CB_SETDROPPEDWIDTH. |
| */ |
| boolean oldLockText = lockText; |
| if ((style & SWT.READ_ONLY) == 0) lockText = true; |
| if (scroll) { |
| OS.SendMessage (handle, OS.CB_SETDROPPEDWIDTH, 0, 0); |
| OS.SendMessage (handle, OS.CB_SETHORIZONTALEXTENT, scrollWidth, 0); |
| } else { |
| scrollWidth += OS.GetSystemMetrics (OS.SM_CYHSCROLL); |
| OS.SendMessage (handle, OS.CB_SETDROPPEDWIDTH, scrollWidth, 0); |
| OS.SendMessage (handle, OS.CB_SETHORIZONTALEXTENT, 0, 0); |
| } |
| if ((style & SWT.READ_ONLY) == 0) lockText = oldLockText; |
| } |
| |
| void setScrollWidth (TCHAR buffer, boolean grow) { |
| RECT rect = new RECT (); |
| long /*int*/ newFont, oldFont = 0; |
| long /*int*/ hDC = OS.GetDC (handle); |
| newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0); |
| if (newFont != 0) oldFont = OS.SelectObject (hDC, newFont); |
| int flags = OS.DT_CALCRECT | OS.DT_SINGLELINE | OS.DT_NOPREFIX; |
| OS.DrawText (hDC, buffer, -1, rect, flags); |
| if (newFont != 0) OS.SelectObject (hDC, oldFont); |
| OS.ReleaseDC (handle, hDC); |
| setScrollWidth (rect.right - rect.left, grow); |
| } |
| |
| void setScrollWidth (int newWidth, boolean grow) { |
| if (grow) { |
| if (newWidth <= scrollWidth) return; |
| setScrollWidth (newWidth + 3); |
| } else { |
| if (newWidth < scrollWidth) return; |
| setScrollWidth (); |
| } |
| } |
| |
| /** |
| * Sets the selection in the receiver's text field to the |
| * range specified by the argument whose x coordinate is the |
| * start of the selection and whose y coordinate is the end |
| * of the selection. |
| * |
| * @param selection a point representing the new selection start and end |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the point is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void setSelection (Point selection) { |
| checkWidget (); |
| if (selection == null) error (SWT.ERROR_NULL_ARGUMENT); |
| int start = translateOffset (selection.x), end = translateOffset (selection.y); |
| if (!OS.IsUnicode && OS.IsDBLocale) { |
| start = wcsToMbcsPos (start); |
| end = wcsToMbcsPos (end); |
| } |
| long /*int*/ bits = OS.MAKELPARAM (start, end); |
| OS.SendMessage (handle, OS.CB_SETEDITSEL, 0, bits); |
| } |
| |
| /** |
| * Sets the contents of the receiver's text field to the |
| * given string. |
| * <p> |
| * This call is ignored when the receiver is read only and |
| * the given string is not in the receiver's list. |
| * </p> |
| * <p> |
| * Note: The text field in a <code>Combo</code> is typically |
| * only capable of displaying a single line of text. Thus, |
| * setting the text to a string containing line breaks or |
| * other special characters will probably cause it to |
| * display incorrectly. |
| * </p><p> |
| * Also note, if control characters like '\n', '\t' etc. are used |
| * in the string, then the behavior is platform dependent. |
| * </p> |
| * |
| * @param string the new text |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void setText (String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if ((style & SWT.READ_ONLY) != 0) { |
| int index = indexOf (string); |
| if (index != -1) select (index); |
| return; |
| } |
| clearSegments (false); |
| int limit = LIMIT; |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText != 0) { |
| limit = (int)/*64*/OS.SendMessage (hwndText, OS.EM_GETLIMITTEXT, 0, 0) & 0x7FFFFFFF; |
| } |
| if (string.length () > limit) string = string.substring (0, limit); |
| TCHAR buffer = new TCHAR (getCodePage (), string, true); |
| if (OS.SetWindowText (handle, buffer)) { |
| applyEditSegments (); |
| sendEvent (SWT.Modify); |
| // widget could be disposed at this point |
| } |
| } |
| |
| /** |
| * Sets the maximum number of characters that the receiver's |
| * text field is capable of holding to be the argument. |
| * <p> |
| * To reset this value to the default, use <code>setTextLimit(Combo.LIMIT)</code>. |
| * Specifying a limit value larger than <code>Combo.LIMIT</code> sets the |
| * receiver's limit to <code>Combo.LIMIT</code>. |
| * </p> |
| * @param limit new text limit |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_CANNOT_BE_ZERO - if the limit is zero</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see #LIMIT |
| */ |
| public void setTextLimit (int limit) { |
| checkWidget (); |
| if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO); |
| if (segments != null && limit > 0) { |
| OS.SendMessage (handle, OS.CB_LIMITTEXT, limit + Math.min (segments.length, LIMIT - limit), 0); |
| } else { |
| OS.SendMessage (handle, OS.CB_LIMITTEXT, limit, 0); |
| } |
| } |
| |
| @Override |
| void setToolTipText (Shell shell, String string) { |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| long /*int*/ hwndList = OS.GetDlgItem (handle, CBID_LIST); |
| if (hwndText != 0) shell.setToolTipText (hwndText, string); |
| if (hwndList != 0) shell.setToolTipText (hwndList, string); |
| shell.setToolTipText (handle, string); |
| } |
| |
| /** |
| * Sets the number of items that are visible in the drop |
| * down portion of the receiver's list. |
| * <p> |
| * Note: This operation is a hint and is not supported on |
| * platforms that do not have this concept. |
| * </p> |
| * |
| * @param count the new number of items to be visible |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.0 |
| */ |
| public void setVisibleItemCount (int count) { |
| checkWidget (); |
| if (count < 0) return; |
| visibleCount = count; |
| updateDropDownHeight (); |
| } |
| |
| @Override |
| void subclass () { |
| super.subclass (); |
| long /*int*/ newProc = display.windowProc; |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText != 0) { |
| OS.SetWindowLongPtr (hwndText, OS.GWLP_WNDPROC, newProc); |
| } |
| long /*int*/ hwndList = OS.GetDlgItem (handle, CBID_LIST); |
| if (hwndList != 0) { |
| OS.SetWindowLongPtr (hwndList, OS.GWLP_WNDPROC, newProc); |
| } |
| } |
| |
| int translateOffset (int offset) { |
| if (segments == null) return offset; |
| for (int i = 0, nSegments = segments.length; i < nSegments && offset - i >= segments[i]; i++) { |
| offset++; |
| } |
| return offset; |
| } |
| |
| @Override |
| boolean translateTraversal (MSG msg) { |
| /* |
| * When the combo box is dropped down, allow return |
| * to select an item in the list and escape to close |
| * the combo box. |
| */ |
| switch ((int)/*64*/(msg.wParam)) { |
| case OS.VK_RETURN: |
| case OS.VK_ESCAPE: |
| if ((style & SWT.DROP_DOWN) != 0) { |
| if (OS.SendMessage (handle, OS.CB_GETDROPPEDSTATE, 0, 0) != 0) { |
| return false; |
| } |
| } |
| } |
| return super.translateTraversal (msg); |
| } |
| |
| @Override |
| boolean traverseEscape () { |
| if ((style & SWT.DROP_DOWN) != 0) { |
| if (OS.SendMessage (handle, OS.CB_GETDROPPEDSTATE, 0, 0) != 0) { |
| OS.SendMessage (handle, OS.CB_SHOWDROPDOWN, 0, 0); |
| return true; |
| } |
| } |
| return super.traverseEscape (); |
| } |
| |
| @Override |
| boolean traverseReturn () { |
| if ((style & SWT.DROP_DOWN) != 0) { |
| if (OS.SendMessage (handle, OS.CB_GETDROPPEDSTATE, 0, 0) != 0) { |
| OS.SendMessage (handle, OS.CB_SHOWDROPDOWN, 0, 0); |
| return true; |
| } |
| } |
| return super.traverseReturn (); |
| } |
| |
| @Override |
| void unsubclass () { |
| super.unsubclass (); |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText != 0 && EditProc != 0) { |
| OS.SetWindowLongPtr (hwndText, OS.GWLP_WNDPROC, EditProc); |
| } |
| long /*int*/ hwndList = OS.GetDlgItem (handle, CBID_LIST); |
| if (hwndList != 0 && ListProc != 0) { |
| OS.SetWindowLongPtr (hwndList, OS.GWLP_WNDPROC, ListProc); |
| } |
| } |
| |
| int untranslateOffset (int offset) { |
| if (segments == null) return offset; |
| for (int i = 0, nSegments = segments.length; i < nSegments && offset > segments[i]; i++) { |
| offset--; |
| } |
| return offset; |
| } |
| |
| void updateDropDownHeight () { |
| /* |
| * Feature in Windows. If the combo box has the CBS_DROPDOWN |
| * or CBS_DROPDOWNLIST style, Windows uses the height that the |
| * programmer sets in SetWindowPos () to control height of the |
| * drop down list. See #setBounds() for more details. |
| */ |
| if ((style & SWT.DROP_DOWN) != 0) { |
| RECT rect = new RECT (); |
| OS.SendMessage (handle, OS.CB_GETDROPPEDCONTROLRECT, 0, rect); |
| int visibleCount = getItemCount() == 0 ? VISIBLE_COUNT : this.visibleCount; |
| int height = getTextHeightInPixels () + (getItemHeightInPixels () * visibleCount) + 2; |
| if (height != (rect.bottom - rect.top)) { |
| forceResize (); |
| OS.GetWindowRect (handle, rect); |
| int flags = OS.SWP_NOMOVE | OS.SWP_NOZORDER | OS.SWP_DRAWFRAME | OS.SWP_NOACTIVATE; |
| SetWindowPos (handle, 0, 0, 0, rect.right - rect.left, height, flags); |
| } |
| } |
| } |
| |
| @Override |
| boolean updateTextDirection(int textDirection) { |
| if (super.updateTextDirection(textDirection)) { |
| if (textDirection == AUTO_TEXT_DIRECTION) { |
| /* To support auto direction we use UCC that are not available in ANSI CP */ |
| if (!OS.IsUnicode) { |
| state &= ~HAS_AUTO_DIRECTION; |
| return false; |
| } |
| } |
| clearSegments (true); |
| applyEditSegments (); |
| applyListSegments (); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| void updateOrientation () { |
| int bits = OS.GetWindowLong (handle, OS.GWL_EXSTYLE); |
| if ((style & SWT.RIGHT_TO_LEFT) != 0) { |
| bits |= OS.WS_EX_LAYOUTRTL; |
| } else { |
| bits &= ~OS.WS_EX_LAYOUTRTL; |
| } |
| bits &= ~OS.WS_EX_RTLREADING; |
| OS.SetWindowLong (handle, OS.GWL_EXSTYLE, bits); |
| long /*int*/ hwndText = 0, hwndList = 0; |
| COMBOBOXINFO pcbi = new COMBOBOXINFO (); |
| pcbi.cbSize = COMBOBOXINFO.sizeof; |
| if (OS.GetComboBoxInfo (handle, pcbi)) { |
| hwndText = pcbi.hwndItem; |
| hwndList = pcbi.hwndList; |
| } |
| if (hwndText != 0) { |
| int bits1 = OS.GetWindowLong (hwndText, OS.GWL_EXSTYLE); |
| int bits2 = OS.GetWindowLong (hwndText, OS.GWL_STYLE); |
| if ((style & SWT.RIGHT_TO_LEFT) != 0) { |
| bits1 |= OS.WS_EX_RIGHT | OS.WS_EX_RTLREADING; |
| bits2 |= OS.ES_RIGHT; |
| } else { |
| bits1 &= ~(OS.WS_EX_RIGHT | OS.WS_EX_RTLREADING); |
| bits2 &= ~OS.ES_RIGHT; |
| } |
| OS.SetWindowLong (hwndText, OS.GWL_EXSTYLE, bits1); |
| OS.SetWindowLong (hwndText, OS.GWL_STYLE, bits2); |
| |
| /* |
| * Bug in Windows. For some reason, the single line text field |
| * portion of the combo box does not redraw to reflect the new |
| * style bits. The fix is to force the widget to be resized by |
| * temporarily shrinking and then growing the width and height. |
| */ |
| RECT rect = new RECT (); |
| OS.GetWindowRect (hwndText, rect); |
| int width = rect.right - rect.left, height = rect.bottom - rect.top; |
| OS.GetWindowRect (handle, rect); |
| int widthCombo = rect.right - rect.left, heightCombo = rect.bottom - rect.top; |
| int uFlags = OS.SWP_NOMOVE | OS.SWP_NOZORDER | OS.SWP_NOACTIVATE; |
| SetWindowPos (hwndText, 0, 0, 0, width - 1, height - 1, uFlags); |
| SetWindowPos (handle, 0, 0, 0, widthCombo - 1, heightCombo - 1, uFlags); |
| SetWindowPos (hwndText, 0, 0, 0, width, height, uFlags); |
| SetWindowPos (handle, 0, 0, 0, widthCombo, heightCombo, uFlags); |
| OS.InvalidateRect (handle, null, true); |
| } |
| if (hwndList != 0) { |
| int bits1 = OS.GetWindowLong (hwndList, OS.GWL_EXSTYLE); |
| if ((style & SWT.RIGHT_TO_LEFT) != 0) { |
| bits1 |= OS.WS_EX_LAYOUTRTL; |
| } else { |
| bits1 &= ~OS.WS_EX_LAYOUTRTL; |
| } |
| OS.SetWindowLong (hwndList, OS.GWL_EXSTYLE, bits1); |
| } |
| } |
| |
| String verifyText (String string, int start, int end, Event keyEvent) { |
| Event event = new Event (); |
| event.text = string; |
| event.start = start; |
| event.end = end; |
| if (keyEvent != null) { |
| event.character = keyEvent.character; |
| event.keyCode = keyEvent.keyCode; |
| event.stateMask = keyEvent.stateMask; |
| } |
| if (!OS.IsUnicode && OS.IsDBLocale) { |
| event.start = mbcsToWcsPos (start); |
| event.end = mbcsToWcsPos (end); |
| } |
| event.start = untranslateOffset (event.start); |
| event.end = untranslateOffset (event.end); |
| /* |
| * It is possible (but unlikely), that application |
| * code could have disposed the widget in the verify |
| * event. If this happens, answer null to cancel |
| * the operation. |
| */ |
| sendEvent (SWT.Verify, event); |
| if (!event.doit || isDisposed ()) return null; |
| return event.text; |
| } |
| |
| int wcsToMbcsPos (int wcsPos) { |
| if (wcsPos <= 0) return 0; |
| if (OS.IsUnicode) return wcsPos; |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText == 0) return wcsPos; |
| int mbcsSize = OS.GetWindowTextLengthA (hwndText); |
| if (mbcsSize == 0) return 0; |
| byte [] buffer = new byte [mbcsSize + 1]; |
| OS.GetWindowTextA (hwndText, buffer, mbcsSize + 1); |
| int mbcsPos = 0, wcsCount = 0; |
| while (mbcsPos < mbcsSize) { |
| if (wcsPos == wcsCount) break; |
| if (OS.IsDBCSLeadByte (buffer [mbcsPos++])) mbcsPos++; |
| wcsCount++; |
| } |
| return mbcsPos; |
| } |
| |
| @Override |
| int widgetExtStyle () { |
| return super.widgetExtStyle () & ~OS.WS_EX_NOINHERITLAYOUT; |
| } |
| |
| @Override |
| int widgetStyle () { |
| int bits = super.widgetStyle () | OS.CBS_AUTOHSCROLL | OS.CBS_NOINTEGRALHEIGHT | OS.WS_HSCROLL |OS.WS_VSCROLL; |
| if ((style & SWT.SIMPLE) != 0) return bits | OS.CBS_SIMPLE; |
| if ((style & SWT.READ_ONLY) != 0) return bits | OS.CBS_DROPDOWNLIST; |
| return bits | OS.CBS_DROPDOWN; |
| } |
| |
| @Override |
| TCHAR windowClass () { |
| return ComboClass; |
| } |
| |
| @Override |
| long /*int*/ windowProc () { |
| return ComboProc; |
| } |
| |
| @Override |
| long /*int*/ windowProc (long /*int*/ hwnd, int msg, long /*int*/ wParam, long /*int*/ lParam) { |
| if (handle == 0) return 0; |
| if (hwnd != handle) { |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| long /*int*/ hwndList = OS.GetDlgItem (handle, CBID_LIST); |
| if ((hwndText != 0 && hwnd == hwndText) || (hwndList != 0 && hwnd == hwndList)) { |
| LRESULT result = null; |
| boolean processSegments = false, redraw = false; |
| switch (msg) { |
| /* Keyboard messages */ |
| case OS.WM_CHAR: |
| processSegments = (hooks (SWT.Segments) || filters (SWT.Segments) || ((state & HAS_AUTO_DIRECTION) != 0)) && !ignoreCharacter && OS.GetKeyState (OS.VK_CONTROL) >= 0 && OS.GetKeyState (OS.VK_MENU) >= 0; |
| result = wmChar (hwnd, wParam, lParam); |
| break; |
| case OS.WM_IME_CHAR: result = wmIMEChar (hwnd, wParam, lParam); break; |
| case OS.WM_KEYDOWN: |
| processSegments = wParam == OS.VK_DELETE && (hooks (SWT.Segments) || filters (SWT.Segments) || ((state & HAS_AUTO_DIRECTION) != 0)); |
| result = wmKeyDown (hwnd, wParam, lParam); |
| break; |
| case OS.WM_KEYUP: result = wmKeyUp (hwnd, wParam, lParam); break; |
| case OS.WM_SYSCHAR: result = wmSysChar (hwnd, wParam, lParam); break; |
| case OS.WM_SYSKEYDOWN: result = wmSysKeyDown (hwnd, wParam, lParam); break; |
| case OS.WM_SYSKEYUP: result = wmSysKeyUp (hwnd, wParam, lParam); break; |
| |
| /* Mouse Messages */ |
| case OS.WM_CAPTURECHANGED: result = wmCaptureChanged (hwnd, wParam, lParam); break; |
| case OS.WM_LBUTTONDBLCLK: result = wmLButtonDblClk (hwnd, wParam, lParam); break; |
| case OS.WM_LBUTTONDOWN: result = wmLButtonDown (hwnd, wParam, lParam); break; |
| case OS.WM_LBUTTONUP: result = wmLButtonUp (hwnd, wParam, lParam); break; |
| case OS.WM_MBUTTONDBLCLK: result = wmMButtonDblClk (hwnd, wParam, lParam); break; |
| case OS.WM_MBUTTONDOWN: result = wmMButtonDown (hwnd, wParam, lParam); break; |
| case OS.WM_MBUTTONUP: result = wmMButtonUp (hwnd, wParam, lParam); break; |
| case OS.WM_MOUSEHOVER: result = wmMouseHover (hwnd, wParam, lParam); break; |
| case OS.WM_MOUSELEAVE: result = wmMouseLeave (hwnd, wParam, lParam); break; |
| case OS.WM_MOUSEMOVE: result = wmMouseMove (hwnd, wParam, lParam); break; |
| // case OS.WM_MOUSEWHEEL: result = wmMouseWheel (hwnd, wParam, lParam); break; |
| case OS.WM_RBUTTONDBLCLK: result = wmRButtonDblClk (hwnd, wParam, lParam); break; |
| case OS.WM_RBUTTONDOWN: result = wmRButtonDown (hwnd, wParam, lParam); break; |
| case OS.WM_RBUTTONUP: result = wmRButtonUp (hwnd, wParam, lParam); break; |
| case OS.WM_XBUTTONDBLCLK: result = wmXButtonDblClk (hwnd, wParam, lParam); break; |
| case OS.WM_XBUTTONDOWN: result = wmXButtonDown (hwnd, wParam, lParam); break; |
| case OS.WM_XBUTTONUP: result = wmXButtonUp (hwnd, wParam, lParam); break; |
| |
| /* Paint messages */ |
| case OS.WM_PAINT: result = wmPaint (hwnd, wParam, lParam); break; |
| |
| /* Menu messages */ |
| case OS.WM_CONTEXTMENU: result = wmContextMenu (hwnd, wParam, lParam); break; |
| |
| /* Clipboard messages */ |
| case OS.EM_CANUNDO: |
| if (hooks (SWT.Segments) || filters (SWT.Segments) || ((state & HAS_AUTO_DIRECTION) != 0)) return 0; |
| break; |
| case OS.WM_UNDO: |
| case OS.EM_UNDO: |
| if (hooks (SWT.Segments) || filters (SWT.Segments) || ((state & HAS_AUTO_DIRECTION) != 0)) return 0; |
| case OS.WM_COPY: |
| case OS.WM_CLEAR: |
| case OS.WM_CUT: |
| case OS.WM_PASTE: |
| processSegments = hooks (SWT.Segments) || filters (SWT.Segments) || ((state & HAS_AUTO_DIRECTION) != 0); |
| case OS.WM_SETTEXT: |
| if (hwnd == hwndText) { |
| result = wmClipboard (hwnd, msg, wParam, lParam); |
| } |
| break; |
| } |
| if (result != null) return result.value; |
| |
| if (processSegments) { |
| if (getDrawing () && OS.IsWindowVisible (hwndText)) { |
| redraw = true; |
| OS.DefWindowProc (hwndText, OS.WM_SETREDRAW, 0, 0); |
| } |
| clearSegments (true); |
| long /*int*/ code = callWindowProc (hwnd, msg, wParam, lParam); |
| applyEditSegments (); |
| if (redraw) { |
| OS.DefWindowProc (hwndText, OS.WM_SETREDRAW, 1, 0); |
| OS.InvalidateRect (hwndText, null, true); |
| } |
| return code; |
| } |
| return callWindowProc (hwnd, msg, wParam, lParam); |
| } |
| } |
| switch (msg) { |
| case OS.CB_SETCURSEL: { |
| long /*int*/ code = OS.CB_ERR; |
| int index = (int)/*64*/ wParam; |
| if ((style & SWT.READ_ONLY) != 0) { |
| if (hooks (SWT.Verify) || filters (SWT.Verify)) { |
| String oldText = getText (), newText = null; |
| if (wParam == -1) { |
| newText = ""; |
| } else { |
| if (0 <= wParam && wParam < getItemCount ()) { |
| newText = getItem ((int)/*64*/wParam); |
| } |
| } |
| if (newText != null && !newText.equals (oldText)) { |
| int length = OS.GetWindowTextLength (handle); |
| oldText = newText; |
| newText = verifyText (newText, 0, length, null); |
| if (newText == null) return 0; |
| if (!newText.equals (oldText)) { |
| index = indexOf (newText); |
| if (index != -1 && index != wParam) { |
| return callWindowProc (handle, OS.CB_SETCURSEL, index, lParam); |
| } |
| } |
| } |
| } |
| } |
| if (hooks (SWT.Segments) || filters (SWT.Segments) || ((state & HAS_AUTO_DIRECTION) != 0)) { |
| code = super.windowProc (hwnd, msg, wParam, lParam); |
| if (!(code == OS.CB_ERR || code == OS.CB_ERRSPACE)) { |
| Event event = getSegments (items [index]); |
| segments = event != null ? event.segments : null; |
| if (event.segmentsChars != null) { |
| int auto = state & HAS_AUTO_DIRECTION; |
| if (event.segmentsChars[0] == RLE) { |
| super.updateTextDirection(SWT.RIGHT_TO_LEFT); |
| } else if (event.segmentsChars[0] == LRE) { |
| super.updateTextDirection(SWT.LEFT_TO_RIGHT); |
| } |
| state |= auto; |
| } |
| return code; |
| } |
| } |
| break; |
| } |
| case OS.CB_ADDSTRING: |
| case OS.CB_INSERTSTRING: |
| case OS.CB_FINDSTRINGEXACT: |
| if (lParam != 0 && (hooks (SWT.Segments) || filters (SWT.Segments) || ((state & HAS_AUTO_DIRECTION) != 0))) { |
| long /*int*/ code = OS.CB_ERR; |
| int length = OS.IsUnicode ? OS.wcslen (lParam) : OS.strlen (lParam); |
| TCHAR buffer = new TCHAR (getCodePage (), length); |
| OS.MoveMemory (buffer, lParam, buffer.length () * TCHAR.sizeof); |
| String string = buffer.toString (0, length); |
| Event event = getSegments (string); |
| if (event != null && event.segments != null) { |
| buffer = new TCHAR (getCodePage (), getSegmentsText (string, event), true); |
| long /*int*/ hHeap = OS.GetProcessHeap (); |
| length = buffer.length() * TCHAR.sizeof; |
| long /*int*/ pszText = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, length); |
| OS.MoveMemory (pszText, buffer, length); |
| code = super.windowProc (hwnd, msg, wParam, pszText); |
| OS.HeapFree (hHeap, 0, pszText); |
| } |
| if (msg == OS.CB_ADDSTRING || msg == OS.CB_INSERTSTRING) { |
| int index = msg == OS.CB_ADDSTRING ? items.length : (int)/*64*/ wParam; |
| String [] newItems = new String [items.length + 1]; |
| System.arraycopy (items, 0, newItems, 0, index); |
| newItems [index] = string; |
| System.arraycopy (items, index, newItems, index + 1, items.length - index); |
| items = newItems; |
| } |
| if (code != OS.CB_ERR && code != OS.CB_ERRSPACE) return code; |
| } |
| break; |
| case OS.CB_DELETESTRING: { |
| if (hooks (SWT.Segments) || filters (SWT.Segments) || ((state & HAS_AUTO_DIRECTION) != 0)) { |
| long /*int*/ code = super.windowProc (hwnd, msg, wParam, lParam); |
| if (code != OS.CB_ERR && code != OS.CB_ERRSPACE) { |
| int index = (int)/*64*/ wParam; |
| if (items.length == 1) { |
| items = new String[0]; |
| } else if (items.length > 1) { |
| String [] newItems = new String [items.length - 1]; |
| System.arraycopy (items, 0, newItems, 0, index); |
| System.arraycopy (items, index + 1, newItems, index, items.length - index - 1); |
| items = newItems; |
| } |
| if (!noSelection) { |
| index = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCURSEL, 0, 0); |
| if (index == wParam) { |
| clearSegments (false); |
| applyEditSegments (); |
| } |
| } |
| } |
| return code; |
| } |
| break; |
| } |
| case OS.CB_RESETCONTENT: { |
| if (hooks (SWT.Segments) || filters (SWT.Segments) || ((state & HAS_AUTO_DIRECTION) != 0)) { |
| if (items.length > 0) items = new String [0]; |
| clearSegments (false); |
| applyEditSegments (); |
| } |
| break; |
| } |
| } |
| return super.windowProc (hwnd, msg, wParam, lParam); |
| } |
| |
| @Override |
| LRESULT WM_CTLCOLOR (long /*int*/ wParam, long /*int*/ lParam) { |
| return wmColorChild (wParam, lParam); |
| } |
| |
| @Override |
| LRESULT WM_GETDLGCODE (long /*int*/ wParam, long /*int*/ lParam) { |
| long /*int*/ code = callWindowProc (handle, OS.WM_GETDLGCODE, wParam, lParam); |
| return new LRESULT (code | OS.DLGC_WANTARROWS); |
| } |
| |
| @Override |
| LRESULT WM_KILLFOCUS (long /*int*/ wParam, long /*int*/ lParam) { |
| /* |
| * Bug in Windows. When a combo box that is read only |
| * is disposed in CBN_KILLFOCUS, Windows segment faults. |
| * The fix is to send focus from WM_KILLFOCUS instead |
| * of CBN_KILLFOCUS. |
| * |
| * NOTE: In version 6 of COMCTL32.DLL, the bug is fixed. |
| */ |
| if ((style & SWT.READ_ONLY) != 0) { |
| return super.WM_KILLFOCUS (wParam, lParam); |
| } |
| |
| /* |
| * Return NULL - Focus notification is |
| * done in WM_COMMAND by CBN_KILLFOCUS. |
| */ |
| return null; |
| } |
| |
| @Override |
| LRESULT WM_LBUTTONDOWN (long /*int*/ wParam, long /*int*/ lParam) { |
| /* |
| * Feature in Windows. When an editable combo box is dropped |
| * down and the text in the entry field partially matches an |
| * item in the list, Windows selects the item but doesn't send |
| * WM_COMMAND with CBN_SELCHANGE. The fix is to detect that |
| * the selection has changed and issue the notification. |
| */ |
| int oldSelection = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCURSEL, 0, 0); |
| LRESULT result = super.WM_LBUTTONDOWN (wParam, lParam); |
| if (result == LRESULT.ZERO) return result; |
| if ((style & SWT.READ_ONLY) == 0) { |
| int newSelection = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCURSEL, 0, 0); |
| if (oldSelection != newSelection) { |
| sendEvent (SWT.Modify); |
| if (isDisposed ()) return LRESULT.ZERO; |
| sendSelectionEvent (SWT.Selection, null, true); |
| if (isDisposed ()) return LRESULT.ZERO; |
| } |
| } |
| return result; |
| } |
| |
| @Override |
| LRESULT WM_SETFOCUS (long /*int*/ wParam, long /*int*/ lParam) { |
| /* |
| * Return NULL - Focus notification is |
| * done by WM_COMMAND with CBN_SETFOCUS. |
| */ |
| return null; |
| } |
| |
| @Override |
| LRESULT WM_SIZE (long /*int*/ wParam, long /*int*/ lParam) { |
| /* |
| * Feature in Windows. When a combo box is resized, |
| * the size of the drop down rectangle is specified |
| * using the height and then the combo box resizes |
| * to be the height of the text field. This causes |
| * two WM_SIZE messages to be sent and two SWT.Resize |
| * events to be issued. The fix is to ignore the |
| * second resize. |
| */ |
| if (ignoreResize) return null; |
| /* |
| * Bug in Windows. If the combo box has the CBS_SIMPLE style, |
| * the list portion of the combo box is not redrawn when the |
| * combo box is resized. The fix is to force a redraw when |
| * the size has changed. |
| */ |
| if ((style & SWT.SIMPLE) != 0) { |
| LRESULT result = super.WM_SIZE (wParam, lParam); |
| if (OS.IsWindowVisible (handle)) { |
| if (OS.IsWinCE) { |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| if (hwndText != 0) OS.InvalidateRect (hwndText, null, true); |
| long /*int*/ hwndList = OS.GetDlgItem (handle, CBID_LIST); |
| if (hwndList != 0) OS.InvalidateRect (hwndList, null, true); |
| } else { |
| int uFlags = OS.RDW_ERASE | OS.RDW_INVALIDATE | OS.RDW_ALLCHILDREN; |
| OS.RedrawWindow (handle, null, 0, uFlags); |
| } |
| } |
| return result; |
| } |
| |
| /* |
| * Feature in Windows. When an editable drop down combo box |
| * contains text that does not correspond to an item in the |
| * list, when the widget is resized, it selects the closest |
| * match from the list. The fix is to lock the current text |
| * by ignoring all WM_SETTEXT messages during processing of |
| * WM_SIZE. |
| */ |
| boolean oldLockText = lockText; |
| if ((style & SWT.READ_ONLY) == 0) lockText = true; |
| LRESULT result = super.WM_SIZE (wParam, lParam); |
| if ((style & SWT.READ_ONLY) == 0) lockText = oldLockText; |
| /* |
| * Feature in Windows. When CB_SETDROPPEDWIDTH is called with |
| * a width that is smaller than the current size of the combo |
| * box, it is ignored. This the fix is to set the width after |
| * the combo box has been resized. |
| */ |
| if ((style & SWT.H_SCROLL) != 0) setScrollWidth (scrollWidth); |
| return result; |
| } |
| |
| @Override |
| LRESULT WM_UPDATEUISTATE (long /*int*/ wParam, long /*int*/ lParam) { |
| LRESULT result = super.WM_UPDATEUISTATE (wParam, lParam); |
| if (result != null) return result; |
| OS.InvalidateRect (handle, null, true); |
| return result; |
| } |
| |
| @Override |
| LRESULT WM_WINDOWPOSCHANGING (long /*int*/ wParam, long /*int*/ lParam) { |
| LRESULT result = super.WM_WINDOWPOSCHANGING (wParam, lParam); |
| if (result != null) return result; |
| /* |
| * Feature in Windows. When a combo box is resized, |
| * the size of the drop down rectangle is specified |
| * using the height and then the combo box resizes |
| * to be the height of the text field. This causes |
| * sibling windows that intersect with the original |
| * bounds to redrawn. The fix is to stop the redraw |
| * using SWP_NOREDRAW and then damage the combo box |
| * text field and the area in the parent where the |
| * combo box used to be. |
| */ |
| if (OS.IsWinCE) return result; |
| if (!getDrawing ()) return result; |
| if (!OS.IsWindowVisible (handle)) return result; |
| if (ignoreResize) { |
| WINDOWPOS lpwp = new WINDOWPOS (); |
| OS.MoveMemory (lpwp, lParam, WINDOWPOS.sizeof); |
| if ((lpwp.flags & OS.SWP_NOSIZE) == 0) { |
| lpwp.flags |= OS.SWP_NOREDRAW; |
| OS.MoveMemory (lParam, lpwp, WINDOWPOS.sizeof); |
| OS.InvalidateRect (handle, null, true); |
| RECT rect = new RECT (); |
| OS.GetWindowRect (handle, rect); |
| int width = rect.right - rect.left; |
| int height = rect.bottom - rect.top; |
| if (width != 0 && height != 0) { |
| long /*int*/ hwndParent = parent.handle; |
| long /*int*/ hwndChild = OS.GetWindow (hwndParent, OS.GW_CHILD); |
| OS.MapWindowPoints (0, hwndParent, rect, 2); |
| long /*int*/ rgn1 = OS.CreateRectRgn (rect.left, rect.top, rect.right, rect.bottom); |
| while (hwndChild != 0) { |
| if (hwndChild != handle) { |
| OS.GetWindowRect (hwndChild, rect); |
| OS.MapWindowPoints (0, hwndParent, rect, 2); |
| long /*int*/ rgn2 = OS.CreateRectRgn (rect.left, rect.top, rect.right, rect.bottom); |
| OS.CombineRgn (rgn1, rgn1, rgn2, OS.RGN_DIFF); |
| OS.DeleteObject (rgn2); |
| } |
| hwndChild = OS.GetWindow (hwndChild, OS.GW_HWNDNEXT); |
| } |
| int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE; |
| OS.RedrawWindow (hwndParent, null, rgn1, flags); |
| OS.DeleteObject (rgn1); |
| } |
| } |
| } |
| return result; |
| } |
| |
| @Override |
| LRESULT wmChar (long /*int*/ hwnd, long /*int*/ wParam, long /*int*/ lParam) { |
| if (ignoreCharacter) return null; |
| LRESULT result = super.wmChar (hwnd, wParam, lParam); |
| if (result != null) return result; |
| switch ((int)/*64*/wParam) { |
| /* |
| * Feature in Windows. For some reason, when the |
| * widget is a single line text widget, when the |
| * user presses tab, return or escape, Windows beeps. |
| * The fix is to look for these keys and not call |
| * the window proc. |
| * |
| * NOTE: This only happens when the drop down list |
| * is not visible. |
| */ |
| case SWT.TAB: return LRESULT.ZERO; |
| case SWT.CR: |
| if (!ignoreDefaultSelection) sendSelectionEvent (SWT.DefaultSelection); |
| ignoreDefaultSelection = false; |
| // when no value is selected in the dropdown |
| if (getSelectionIndex() == -1) { |
| if ((style & SWT.DROP_DOWN) != 0 && (style & SWT.READ_ONLY) == 0) { |
| // close the dropdown if open |
| if (OS.SendMessage(handle, OS.CB_GETDROPPEDSTATE, 0, 0) != 0) { |
| OS.SendMessage(handle, OS.CB_SHOWDROPDOWN, 0, 0); |
| } |
| return LRESULT.ZERO; |
| } |
| } |
| case SWT.ESC: |
| if ((style & SWT.DROP_DOWN) != 0) { |
| if (OS.SendMessage (handle, OS.CB_GETDROPPEDSTATE, 0, 0) == 0) { |
| return LRESULT.ZERO; |
| } |
| } |
| /* |
| * Bug in Windows. When the user types CTRL and BS |
| * in a combo control, a DEL character (0x08) is generated. |
| * Rather than deleting the text, the DEL character |
| * is inserted into the control. The fix is to detect |
| * this case and not call the window proc. |
| */ |
| case SWT.DEL: |
| if (OS.GetKeyState (OS.VK_CONTROL) < 0) { |
| if ((style & SWT.READ_ONLY) != 0) return LRESULT.ZERO; |
| Point selection = getSelection (); |
| long /*int*/ hwndText = OS.GetDlgItem (handle, CBID_EDIT); |
| int x = selection.x; |
| int y = selection.y; |
| if (x == y) { |
| String actText = getText ().substring (0, x); |
| java.util.regex.Matcher m = CTRL_BS_PATTERN.matcher (actText); |
| if (m.find ()) { |
| x = m.start (); |
| y = m.end (); |
| OS.SendMessage (hwndText, OS.EM_SETSEL, x, y); |
| } |
| } |
| if (x < y) { |
| /* |
| * Instead of setting the new text directly we send the replace selection event to |
| * guarantee that the action is pushed to the undo buffer. |
| */ |
| OS.SendMessage (hwndText, OS.EM_REPLACESEL, 1, 0); |
| } |
| return LRESULT.ZERO; |
| } |
| } |
| return result; |
| } |
| |
| LRESULT wmClipboard (long /*int*/ hwndText, int msg, long /*int*/ wParam, long /*int*/ lParam) { |
| if ((style & SWT.READ_ONLY) != 0) return null; |
| if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return null; |
| boolean call = false; |
| int [] start = new int [1], end = new int [1]; |
| String newText = null; |
| switch (msg) { |
| case OS.WM_CLEAR: |
| case OS.WM_CUT: |
| OS.SendMessage (hwndText, OS.EM_GETSEL, start, end); |
| if (untranslateOffset (start [0]) != untranslateOffset (end [0])) { |
| newText = ""; |
| call = true; |
| } |
| break; |
| case OS.WM_PASTE: |
| OS.SendMessage (hwndText, OS.EM_GETSEL, start, end); |
| newText = getClipboardText (); |
| break; |
| case OS.EM_UNDO: |
| case OS.WM_UNDO: |
| if (OS.SendMessage (hwndText, OS.EM_CANUNDO, 0, 0) != 0) { |
| ignoreModify = true; |
| OS.CallWindowProc (EditProc, hwndText, msg, wParam, lParam); |
| int length = OS.GetWindowTextLength (hwndText); |
| int [] newStart = new int [1], newEnd = new int [1]; |
| OS.SendMessage (hwndText, OS.EM_GETSEL, newStart, newEnd); |
| if (length != 0 && newStart [0] != newEnd [0]) { |
| TCHAR buffer = new TCHAR (getCodePage (), length + 1); |
| OS.GetWindowText (hwndText, buffer, length + 1); |
| newText = buffer.toString (newStart [0], newEnd [0] - newStart [0]); |
| } else { |
| newText = ""; |
| } |
| OS.CallWindowProc (EditProc, hwndText, msg, wParam, lParam); |
| OS.SendMessage (hwndText, OS.EM_GETSEL, start, end); |
| ignoreModify = false; |
| } |
| break; |
| case OS.WM_SETTEXT: |
| if (lockText) return null; |
| end [0] = OS.GetWindowTextLength (hwndText); |
| int length = OS.IsUnicode ? OS.wcslen (lParam) : OS.strlen (lParam); |
| TCHAR buffer = new TCHAR (getCodePage (), length); |
| int byteCount = buffer.length () * TCHAR.sizeof; |
| OS.MoveMemory (buffer, lParam, byteCount); |
| newText = buffer.toString (0, length); |
| break; |
| } |
| if (newText != null) { |
| String oldText = newText; |
| newText = verifyText (newText, start [0], end [0], null); |
| if (newText == null) return LRESULT.ZERO; |
| if (!newText.equals (oldText)) { |
| if (call) { |
| OS.CallWindowProc (EditProc, hwndText, msg, wParam, lParam); |
| } |
| TCHAR buffer = new TCHAR (getCodePage (), newText, true); |
| if (msg == OS.WM_SETTEXT) { |
| long /*int*/ hHeap = OS.GetProcessHeap (); |
| int byteCount = buffer.length () * TCHAR.sizeof; |
| long /*int*/ pszText = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, byteCount); |
| OS.MoveMemory (pszText, buffer, byteCount); |
| long /*int*/ code = OS.CallWindowProc (EditProc, hwndText, msg, wParam, pszText); |
| OS.HeapFree (hHeap, 0, pszText); |
| return new LRESULT (code); |
| } else { |
| OS.SendMessage (hwndText, OS.EM_REPLACESEL, 0, buffer); |
| return LRESULT.ZERO; |
| } |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| LRESULT wmCommandChild (long /*int*/ wParam, long /*int*/ lParam) { |
| int code = OS.HIWORD (wParam); |
| switch (code) { |
| case OS.CBN_EDITCHANGE: |
| if (ignoreModify) break; |
| /* |
| * Feature in Windows. If the combo box list selection is |
| * queried using CB_GETCURSEL before the WM_COMMAND (with |
| * CBN_EDITCHANGE) returns, CB_GETCURSEL returns the previous |
| * selection in the list. It seems that the combo box sends |
| * the WM_COMMAND before it makes the selection in the list box |
| * match the entry field. The fix is remember that no selection |
| * in the list should exist in this case. |
| */ |
| noSelection = true; |
| sendEvent (SWT.Modify); |
| if (isDisposed ()) return LRESULT.ZERO; |
| noSelection = false; |
| break; |
| case OS.CBN_SELCHANGE: |
| /* |
| * Feature in Windows. If the text in an editable combo box |
| * is queried using GetWindowText () before the WM_COMMAND |
| * (with CBN_SELCHANGE) returns, GetWindowText () returns is |
| * the previous text in the combo box. It seems that the combo |
| * box sends the WM_COMMAND before it updates the text field to |
| * match the list selection. The fix is to force the text field |
| * to match the list selection by re-selecting the list item. |
| */ |
| int index = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCURSEL, 0, 0); |
| if (index != OS.CB_ERR) { |
| OS.SendMessage (handle, OS.CB_SETCURSEL, index, 0); |
| } |
| /* |
| * It is possible (but unlikely), that application |
| * code could have disposed the widget in the modify |
| * event. If this happens, end the processing of the |
| * Windows message by returning zero as the result of |
| * the window proc. |
| */ |
| sendEvent (SWT.Modify); |
| if (isDisposed ()) return LRESULT.ZERO; |
| sendSelectionEvent (SWT.Selection); |
| break; |
| case OS.CBN_SETFOCUS: |
| sendFocusEvent (SWT.FocusIn); |
| if (isDisposed ()) return LRESULT.ZERO; |
| break; |
| case OS.CBN_DROPDOWN: |
| setCursor (); |
| updateDropDownHeight (); |
| break; |
| case OS.CBN_KILLFOCUS: |
| /* |
| * Bug in Windows. When a combo box that is read only |
| * is disposed in CBN_KILLFOCUS, Windows segment faults. |
| * The fix is to send focus from WM_KILLFOCUS instead |
| * of CBN_KILLFOCUS. |
| * |
| * NOTE: In version 6 of COMCTL32.DLL, the bug is fixed. |
| */ |
| if ((style & SWT.READ_ONLY) != 0) break; |
| sendFocusEvent (SWT.FocusOut); |
| if (isDisposed ()) return LRESULT.ZERO; |
| break; |
| case OS.EN_ALIGN_LTR_EC: |
| case OS.EN_ALIGN_RTL_EC: |
| Event event = new Event (); |
| event.doit = true; |
| sendEvent (SWT.OrientationChange, event); |
| if (!event.doit) { |
| long /*int*/ hwnd = lParam; |
| int bits1 = OS.GetWindowLong (hwnd, OS.GWL_EXSTYLE); |
| int bits2 = OS.GetWindowLong (hwnd, OS.GWL_STYLE); |
| if (code == OS.EN_ALIGN_LTR_EC) { |
| bits1 |= (OS.WS_EX_RTLREADING | OS.WS_EX_RIGHT); |
| bits2 |= OS.ES_RIGHT; |
| } else { |
| bits1 &= ~(OS.WS_EX_RTLREADING | OS.WS_EX_RIGHT); |
| bits2 &= ~OS.ES_RIGHT; |
| } |
| OS.SetWindowLong (hwnd, OS.GWL_EXSTYLE, bits1); |
| OS.SetWindowLong (hwnd, OS.GWL_STYLE, bits2); |
| } |
| if (hooks (SWT.Segments) || filters (SWT.Segments) || ((state & HAS_AUTO_DIRECTION) != 0)) { |
| clearSegments(true); |
| /* |
| * Explicit LTR or RTL direction was set, so auto direction |
| * should be deactivated. |
| */ |
| state &= ~HAS_AUTO_DIRECTION; |
| applyEditSegments(); |
| } |
| break; |
| } |
| return super.wmCommandChild (wParam, lParam); |
| } |
| |
| @Override |
| LRESULT wmIMEChar (long /*int*/ hwnd, long /*int*/ wParam, long /*int*/ lParam) { |
| |
| /* Process a DBCS character */ |
| Display display = this.display; |
| display.lastKey = 0; |
| display.lastAscii = (int)/*64*/wParam; |
| display.lastVirtual = display.lastNull = display.lastDead = false; |
| if (!sendKeyEvent (SWT.KeyDown, OS.WM_IME_CHAR, wParam, lParam)) { |
| return LRESULT.ZERO; |
| } |
| |
| /* |
| * Feature in Windows. The Windows text widget uses |
| * two 2 WM_CHAR's to process a DBCS key instead of |
| * using WM_IME_CHAR. The fix is to allow the text |
| * widget to get the WM_CHAR's but ignore sending |
| * them to the application. |
| */ |
| ignoreCharacter = true; |
| long /*int*/ result = callWindowProc (hwnd, OS.WM_IME_CHAR, wParam, lParam); |
| MSG msg = new MSG (); |
| int flags = OS.PM_REMOVE | OS.PM_NOYIELD | OS.PM_QS_INPUT | OS.PM_QS_POSTMESSAGE; |
| while (OS.PeekMessage (msg, hwnd, OS.WM_CHAR, OS.WM_CHAR, flags)) { |
| OS.TranslateMessage (msg); |
| OS.DispatchMessage (msg); |
| } |
| ignoreCharacter = false; |
| |
| sendKeyEvent (SWT.KeyUp, OS.WM_IME_CHAR, wParam, lParam); |
| // widget could be disposed at this point |
| display.lastKey = display.lastAscii = 0; |
| return new LRESULT (result); |
| } |
| |
| @Override |
| LRESULT wmKeyDown (long /*int*/ hwnd, long /*int*/ wParam, long /*int*/ lParam) { |
| if (ignoreCharacter) return null; |
| LRESULT result = super.wmKeyDown (hwnd, wParam, lParam); |
| if (result != null) return result; |
| ignoreDefaultSelection = false; |
| switch ((int)/*64*/wParam) { |
| case OS.VK_LEFT: |
| case OS.VK_UP: |
| case OS.VK_RIGHT: |
| case OS.VK_DOWN: |
| if (segments != null) { |
| long /*int*/ code = 0; |
| int [] start = new int [1], end = new int [1], newStart = new int [1], newEnd = new int [1]; |
| OS.SendMessage (handle, OS.CB_GETEDITSEL, start, end); |
| while (true) { |
| code = callWindowProc (hwnd, OS.WM_KEYDOWN, wParam, lParam); |
| OS.SendMessage (handle, OS.CB_GETEDITSEL, newStart, newEnd); |
| if (newStart [0] != start [0]) { |
| if (untranslateOffset (newStart [0]) != untranslateOffset (start [0])) break; |
| } else if (newEnd [0] != end [0]) { |
| if (untranslateOffset (newEnd [0]) != untranslateOffset (end [0])) break; |
| } else { |
| break; |
| } |
| start [0] = newStart [0]; |
| end [0] = newEnd [0]; |
| } |
| result = code == 0 ? LRESULT.ZERO : new LRESULT (code); |
| } |
| break; |
| case OS.VK_RETURN: |
| if ((style & SWT.DROP_DOWN) != 0) { |
| if (OS.SendMessage (handle, OS.CB_GETDROPPEDSTATE, 0, 0) != 0) { |
| ignoreDefaultSelection = true; |
| } |
| } |
| break; |
| } |
| return result; |
| } |
| |
| @Override |
| LRESULT wmSysKeyDown (long /*int*/ hwnd, long /*int*/ wParam, long /*int*/ lParam) { |
| /* |
| * Feature in Windows. When an editable combo box is dropped |
| * down using Alt+Down and the text in the entry field partially |
| * matches an item in the list, Windows selects the item but doesn't |
| * send WM_COMMAND with CBN_SELCHANGE. The fix is to detect that |
| * the selection has changed and issue the notification. |
| */ |
| int oldSelection = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCURSEL, 0, 0); |
| LRESULT result = super.wmSysKeyDown (hwnd, wParam, lParam); |
| if (result != null) return result; |
| if ((style & SWT.READ_ONLY) == 0) { |
| if (wParam == OS.VK_DOWN) { |
| long /*int*/ code = callWindowProc (hwnd, OS.WM_SYSKEYDOWN, wParam, lParam); |
| int newSelection = (int)/*64*/OS.SendMessage (handle, OS.CB_GETCURSEL, 0, 0); |
| if (oldSelection != newSelection) { |
| sendEvent (SWT.Modify); |
| if (isDisposed ()) return LRESULT.ZERO; |
| sendSelectionEvent (SWT.Selection, null, true); |
| if (isDisposed ()) return LRESULT.ZERO; |
| } |
| return new LRESULT (code); |
| } |
| } |
| return result; |
| } |
| |
| } |