| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.internal.win32.*; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.events.*; |
| |
| /** |
| * Instances of this class implement the notebook user interface |
| * metaphor. It allows the user to select a notebook page from |
| * set of pages. |
| * <p> |
| * The item children that may be added to instances of this class |
| * must be of type <code>TabItem</code>. |
| * <code>Control</code> children are created and then set into a |
| * tab item using <code>TabItem#setControl</code>. |
| * </p><p> |
| * Note that although this class is a subclass of <code>Composite</code>, |
| * it does not make sense to set a layout on it. |
| * </p><p> |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>(none)</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>Selection</dd> |
| * </dl> |
| * <p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| */ |
| public class TabFolder extends Composite { |
| TabItem [] items; |
| ImageList imageList; |
| static final int TabFolderProc; |
| static final TCHAR TabFolderClass = new TCHAR (0, "SWT_" + OS.WC_TABCONTROL, true); |
| static { |
| /* |
| * Feature in Windows. The tab control window class |
| * uses the CS_HREDRAW and CS_VREDRAW style bits to |
| * force a full redraw of the control and all children |
| * when resized. This causes flashing. The fix is to |
| * register a new window class without these bits and |
| * implement special code that damages only the exposed |
| * area. |
| */ |
| WNDCLASS lpWndClass = new WNDCLASS (); |
| TCHAR WC_TABCONTROL = new TCHAR (0, OS.WC_TABCONTROL, true); |
| OS.GetClassInfo (0, WC_TABCONTROL, lpWndClass); |
| TabFolderProc = lpWndClass.lpfnWndProc; |
| int hInstance = OS.GetModuleHandle (null); |
| if (!OS.GetClassInfo (hInstance, TabFolderClass, lpWndClass)) { |
| int hHeap = OS.GetProcessHeap (); |
| lpWndClass.hInstance = hInstance; |
| lpWndClass.style &= ~(OS.CS_HREDRAW | OS.CS_VREDRAW); |
| int byteCount = TabFolderClass.length () * TCHAR.sizeof; |
| int lpszClassName = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, byteCount); |
| OS.MoveMemory (lpszClassName, TabFolderClass, byteCount); |
| lpWndClass.lpszClassName = lpszClassName; |
| OS.RegisterClass (lpWndClass); |
| // OS.HeapFree (hHeap, 0, lpszClassName); |
| } |
| } |
| |
| /** |
| * 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 |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public TabFolder (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the receiver's selection changes, by sending |
| * it one of the messages defined in the <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * When <code>widgetSelected</code> is called, the item field of the event object is valid. |
| * <code>widgetDefaultSelected</code> is not called. |
| * </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); |
| } |
| |
| int callWindowProc (int msg, int wParam, int lParam) { |
| if (handle == 0) return 0; |
| return OS.CallWindowProc (TabFolderProc, handle, msg, wParam, lParam); |
| } |
| |
| static int checkStyle (int style) { |
| /* |
| * 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. |
| */ |
| return style & ~(SWT.H_SCROLL | SWT.V_SCROLL); |
| } |
| |
| protected void checkSubclass () { |
| if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS); |
| } |
| |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget (); |
| RECT insetRect = new RECT (), itemRect = new RECT (); |
| OS.SendMessage (handle, OS.TCM_ADJUSTRECT, 0, insetRect); |
| int width = insetRect.left - insetRect.right, height = 0; |
| int count = OS.SendMessage (handle, OS.TCM_GETITEMCOUNT, 0, 0); |
| if (count != 0) { |
| OS.SendMessage (handle, OS.TCM_GETITEMRECT, count - 1, itemRect); |
| width = Math.max (width, itemRect.right - insetRect.right); |
| } |
| Point size = null; |
| if (layout != null) { |
| size = layout.computeSize (this, wHint, hHint, changed); |
| } else { |
| size = minimumSize (wHint, hHint, changed); |
| } |
| if (size.x == 0) size.x = DEFAULT_WIDTH; |
| if (size.y == 0) size.y = DEFAULT_HEIGHT; |
| if (wHint != SWT.DEFAULT) size.x = wHint; |
| if (hHint != SWT.DEFAULT) size.y = hHint; |
| width = Math.max (width, size.x); |
| height = Math.max (height, size.y); |
| Rectangle trim = computeTrim (0, 0, width, height); |
| width = trim.width; height = trim.height; |
| return new Point (width, height); |
| } |
| |
| public Rectangle computeTrim (int x, int y, int width, int height) { |
| checkWidget (); |
| RECT rect = new RECT (); |
| OS.SetRect (rect, x, y, x + width, y + height); |
| OS.SendMessage (handle, OS.TCM_ADJUSTRECT, 1, rect); |
| int border = getBorderWidth (); |
| rect.left -= border; rect.right += border; |
| rect.top -= border; rect.bottom += border; |
| int newWidth = rect.right - rect.left; |
| int newHeight = rect.bottom - rect.top; |
| return new Rectangle (rect.left, rect.top, newWidth, newHeight); |
| } |
| |
| void createItem (TabItem item, int index) { |
| int count = OS.SendMessage (handle, OS.TCM_GETITEMCOUNT, 0, 0); |
| if (!(0 <= index && index <= count)) error (SWT.ERROR_INVALID_RANGE); |
| if (count == items.length) { |
| TabItem [] newItems = new TabItem [items.length + 4]; |
| System.arraycopy (items, 0, newItems, 0, items.length); |
| items = newItems; |
| } |
| TCITEM tcItem = new TCITEM (); |
| if (OS.SendMessage (handle, OS.TCM_INSERTITEM, index, tcItem) == -1) { |
| error (SWT.ERROR_ITEM_NOT_ADDED); |
| } |
| System.arraycopy (items, index, items, index + 1, count - index); |
| items [index] = item; |
| |
| /* |
| * Send a selection event when the item that is added becomes |
| * the new selection. This only happens when the first item |
| * is added. |
| */ |
| if (count == 0) { |
| Event event = new Event (); |
| event.item = items [0]; |
| sendEvent (SWT.Selection, event); |
| // the widget could be destroyed at this point |
| } |
| } |
| |
| void createHandle () { |
| super.createHandle (); |
| state &= ~CANVAS; |
| /* |
| * Feature in Windows. Despite the fact that the |
| * tool tip text contains \r\n, the tooltip will |
| * not honour the new line unless TTM_SETMAXTIPWIDTH |
| * is set. The fix is to set TTM_SETMAXTIPWIDTH to |
| * a large value. |
| */ |
| int hwndToolTip = OS.SendMessage (handle, OS.TCM_GETTOOLTIPS, 0, 0); |
| OS.SendMessage (hwndToolTip, OS.TTM_SETMAXTIPWIDTH, 0, 0x7FFF); |
| } |
| |
| void createWidget () { |
| super.createWidget (); |
| items = new TabItem [4]; |
| } |
| |
| void destroyItem (TabItem item) { |
| int count = OS.SendMessage (handle, OS.TCM_GETITEMCOUNT, 0, 0); |
| int index = 0; |
| while (index < count) { |
| if (items [index] == item) break; |
| index++; |
| } |
| if (index == count) return; |
| int selectionIndex = OS.SendMessage (handle, OS.TCM_GETCURSEL, 0, 0); |
| if (OS.SendMessage (handle, OS.TCM_DELETEITEM, index, 0) == 0) { |
| error (SWT.ERROR_ITEM_NOT_REMOVED); |
| } |
| System.arraycopy (items, index + 1, items, index, --count - index); |
| items [count] = null; |
| if (count == 0) { |
| if (imageList != null) { |
| OS.SendMessage (handle, OS.TCM_SETIMAGELIST, 0, 0); |
| Display display = getDisplay (); |
| display.releaseImageList (imageList); |
| } |
| imageList = null; |
| items = new TabItem [4]; |
| } |
| if (count > 0 && index == selectionIndex) { |
| setSelection (Math.max (0, selectionIndex - 1)); |
| selectionIndex = getSelectionIndex (); |
| if (selectionIndex != -1) { |
| Event event = new Event (); |
| event.item = items [selectionIndex]; |
| sendEvent (SWT.Selection, event); |
| // the widget could be destroyed at this point |
| } |
| } |
| } |
| |
| public Rectangle getClientArea () { |
| checkWidget (); |
| forceResize (); |
| RECT rect = new RECT (); |
| OS.GetClientRect (handle, rect); |
| OS.SendMessage (handle, OS.TCM_ADJUSTRECT, 0, rect); |
| int width = rect.right - rect.left; |
| int height = rect.bottom - rect.top; |
| return new Rectangle (rect.left, rect.top, width, height); |
| } |
| |
| /** |
| * Returns the item at the given, zero-relative index in the |
| * receiver. 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 TabItem getItem (int index) { |
| checkWidget (); |
| int count = OS.SendMessage (handle, OS.TCM_GETITEMCOUNT, 0, 0); |
| if (!(0 <= index && index < count)) error (SWT.ERROR_INVALID_RANGE); |
| return items [index]; |
| } |
| |
| /** |
| * Returns the number of items contained in the receiver. |
| * |
| * @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 (); |
| return OS.SendMessage (handle, OS.TCM_GETITEMCOUNT, 0, 0); |
| } |
| |
| /** |
| * Returns an array of <code>TabItem</code>s which are the items |
| * in the receiver. |
| * <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 |
| * |
| * @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 TabItem [] getItems () { |
| checkWidget (); |
| int count = OS.SendMessage (handle, OS.TCM_GETITEMCOUNT, 0, 0); |
| TabItem [] result = new TabItem [count]; |
| System.arraycopy (items, 0, result, 0, count); |
| return result; |
| } |
| |
| /** |
| * Returns an array of <code>TabItem</code>s that are currently |
| * selected in the receiver. An empty array indicates that no |
| * items are selected. |
| * <p> |
| * Note: This is not the actual structure used by the receiver |
| * to maintain its selection, so modifying the array will |
| * not affect the receiver. |
| * </p> |
| * @return an array representing the selection |
| * |
| * @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 TabItem [] getSelection () { |
| checkWidget (); |
| int index = OS.SendMessage (handle, OS.TCM_GETCURSEL, 0, 0); |
| if (index == -1) return new TabItem [0]; |
| return new TabItem [] {items [index]}; |
| } |
| |
| /** |
| * Returns the zero-relative index of the item which is currently |
| * selected in the receiver, 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 (); |
| return OS.SendMessage (handle, OS.TCM_GETCURSEL, 0, 0); |
| } |
| |
| int imageIndex (Image image) { |
| if (image == null) return OS.I_IMAGENONE; |
| if (imageList == null) { |
| Rectangle bounds = image.getBounds (); |
| imageList = getDisplay ().getImageList (new Point (bounds.width, bounds.height)); |
| int index = imageList.indexOf (image); |
| if (index == -1) index = imageList.add (image); |
| int hImageList = imageList.getHandle (); |
| OS.SendMessage (handle, OS.TCM_SETIMAGELIST, 0, hImageList); |
| return index; |
| } |
| int index = imageList.indexOf (image); |
| if (index != -1) return index; |
| return imageList.add (image); |
| } |
| |
| /** |
| * 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 item 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 (TabItem item) { |
| checkWidget (); |
| if (item == null) error (SWT.ERROR_NULL_ARGUMENT); |
| int count = OS.SendMessage (handle, OS.TCM_GETITEMCOUNT, 0, 0); |
| for (int i=0; i<count; i++) { |
| if (items [i] == item) return i; |
| } |
| return -1; |
| } |
| |
| Point minimumSize (int wHint, int hHint, boolean flushCache) { |
| Control [] children = _getChildren (); |
| int width = 0, height = 0; |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| int index = 0; |
| int count = OS.SendMessage (handle, OS.TCM_GETITEMCOUNT, 0, 0); |
| while (index < count) { |
| if (items [index].control == child) break; |
| index++; |
| } |
| if (index == count) { |
| Rectangle rect = child.getBounds (); |
| width = Math.max (width, rect.x + rect.width); |
| height = Math.max (height, rect.y + rect.height); |
| } else { |
| Point size = child.computeSize (wHint, hHint, flushCache); |
| width = Math.max (width, size.x); |
| height = Math.max (height, size.y); |
| } |
| } |
| return new Point (width, height); |
| } |
| |
| boolean mnemonicHit (char key) { |
| for (int i=0; i<items.length; i++) { |
| TabItem item = items [i]; |
| if (item != null) { |
| char ch = findMnemonic (item.getText ()); |
| if (Character.toUpperCase (key) == Character.toUpperCase (ch)) { |
| if (setFocus ()) { |
| setSelection (i, true); |
| return true; |
| } |
| } |
| } |
| } |
| return false; |
| } |
| |
| boolean mnemonicMatch (char key) { |
| for (int i=0; i<items.length; i++) { |
| TabItem item = items [i]; |
| if (item != null) { |
| char ch = findMnemonic (item.getText ()); |
| if (Character.toUpperCase (key) == Character.toUpperCase (ch)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| void releaseWidget () { |
| int count = OS.SendMessage (handle, OS.TCM_GETITEMCOUNT, 0, 0); |
| for (int i=0; i<count; i++) { |
| TabItem item = items [i]; |
| if (!item.isDisposed ()) item.releaseResources (); |
| } |
| items = null; |
| if (imageList != null) { |
| OS.SendMessage (handle, OS.TCM_SETIMAGELIST, 0, 0); |
| Display display = getDisplay (); |
| display.releaseImageList (imageList); |
| } |
| imageList = null; |
| super.releaseWidget (); |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the receiver's selection changes. |
| * |
| * @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); |
| } |
| |
| /** |
| * Sets the receiver's selection to be the given array of items. |
| * The current selected is first cleared, then the new items are |
| * selected. |
| * |
| * @param items the array 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 void setSelection (TabItem [] items) { |
| checkWidget (); |
| if (items == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (items.length == 0) { |
| setSelection (-1); |
| return; |
| } |
| for (int i=items.length-1; i>=0; --i) { |
| int index = indexOf (items [i]); |
| if (index != -1) setSelection (index); |
| } |
| } |
| |
| /** |
| * Selects the item at the given zero-relative index in the receiver. |
| * If the item at the index was already selected, it remains selected. |
| * The current selected is first cleared, then the new items are |
| * 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 setSelection (int index) { |
| checkWidget (); |
| setSelection (index, false); |
| } |
| |
| void setSelection (int index, boolean notify) { |
| int oldIndex = OS.SendMessage (handle, OS.TCM_GETCURSEL, 0, 0); |
| if (oldIndex != -1) { |
| TabItem item = items [oldIndex]; |
| Control control = item.control; |
| if (control != null && !control.isDisposed ()) { |
| control.setVisible (false); |
| } |
| } |
| OS.SendMessage (handle, OS.TCM_SETCURSEL, index, 0); |
| int newIndex = OS.SendMessage (handle, OS.TCM_GETCURSEL, 0, 0); |
| if (newIndex != -1) { |
| TabItem item = items [newIndex]; |
| Control control = item.control; |
| if (control != null && !control.isDisposed ()) { |
| control.setBounds (getClientArea ()); |
| control.setVisible (true); |
| } |
| if (notify) { |
| Event event = new Event (); |
| event.item = item; |
| sendEvent (SWT.Selection, event); |
| } |
| } |
| } |
| |
| String toolTipText (NMTTDISPINFO hdr) { |
| if ((hdr.uFlags & OS.TTF_IDISHWND) != 0) { |
| return null; |
| } |
| int index = hdr.idFrom; |
| int hwndToolTip = OS.SendMessage (handle, OS.TCM_GETTOOLTIPS, 0, 0); |
| if (hwndToolTip == hdr.hwndFrom) { |
| if (toolTipText != null) return ""; |
| if (0 <= index && index < items.length) { |
| TabItem item = items [index]; |
| if (item != null) return item.toolTipText; |
| } |
| } |
| return super.toolTipText (hdr); |
| } |
| |
| boolean traversePage (boolean next) { |
| int count = getItemCount (); |
| if (count == 0) return false; |
| int index = getSelectionIndex (); |
| if (index == -1) { |
| index = 0; |
| } else { |
| int offset = (next) ? 1 : -1; |
| index = (index + offset + count) % count; |
| } |
| setSelection (index, true); |
| return index == getSelectionIndex (); |
| } |
| |
| int widgetStyle () { |
| /* |
| * Bug in Windows. Under certain circumstances, |
| * when TCM_SETITEM is used to change the text |
| * in a tab item, the tab folder draws on top |
| * of the client area. The fix is ensure that |
| * this cannot happen by setting WS_CLIPCHILDREN. |
| */ |
| int bits = super.widgetStyle () | OS.WS_CLIPCHILDREN; |
| if ((style & SWT.NO_FOCUS) != 0) bits |= OS.TCS_FOCUSNEVER; |
| return bits | OS.TCS_TABS | OS.TCS_TOOLTIPS; |
| } |
| |
| TCHAR windowClass () { |
| return TabFolderClass; |
| } |
| |
| int windowProc () { |
| return TabFolderProc; |
| } |
| |
| LRESULT WM_GETDLGCODE (int wParam, int lParam) { |
| LRESULT result = super.WM_GETDLGCODE (wParam, lParam); |
| /* |
| * Return DLGC_BUTTON so that mnemonics will be |
| * processed without needing to press the ALT key |
| * when the widget has focus. |
| */ |
| if (result != null) return result; |
| return new LRESULT (OS.DLGC_BUTTON); |
| } |
| |
| LRESULT WM_NCHITTEST (int wParam, int lParam) { |
| LRESULT result = super.WM_NCHITTEST (wParam, lParam); |
| if (result != null) return result; |
| /* |
| * Feature in Windows. The tab control implements |
| * WM_NCHITTEST to return HTCLIENT when the cursor |
| * is inside the tab buttons. This causes mouse |
| * events like WM_MOUSEMOVE to be delivered to the |
| * parent. Also, tool tips for the tab control are |
| * never invoked because tool tips rely on mouse |
| * events to be delivered to the window that wants |
| * to display the tool tip. The fix is to call the |
| * default window proc that returns HTCLIENT when |
| * the mouse is in the client area. |
| */ |
| int hittest = OS.DefWindowProc (handle, OS.WM_NCHITTEST, wParam, lParam); |
| return new LRESULT (hittest); |
| } |
| |
| LRESULT WM_NOTIFY (int wParam, int lParam) { |
| /* |
| * Feature in Windows. When the tab folder window |
| * proc processes WM_NOTIFY, it forwards this |
| * message to its parent. This is done so that |
| * children of this control that send this message |
| * type to their parent will notify not only |
| * this control but also the parent of this control, |
| * which is typically the application window and |
| * the window that is looking for the message. |
| * If the control did not forward the message, |
| * applications would have to subclass the control |
| * window to see the message. Because the control |
| * window is subclassed by SWT, the message |
| * is delivered twice, once by SWT and once when |
| * the message is forwarded by the window proc. |
| * The fix is to avoid calling the window proc |
| * for this control. |
| */ |
| LRESULT result = super.WM_NOTIFY (wParam, lParam); |
| if (result != null) return result; |
| return LRESULT.ZERO; |
| } |
| |
| LRESULT WM_SIZE (int wParam, int lParam) { |
| LRESULT result = super.WM_SIZE (wParam, lParam); |
| /* |
| * It is possible (but unlikely), that application |
| * code could have disposed the widget in the resize |
| * event. If this happens, end the processing of the |
| * Windows message by returning the result of the |
| * WM_SIZE message. |
| */ |
| if (isDisposed ()) return result; |
| int index = OS.SendMessage (handle, OS.TCM_GETCURSEL, 0, 0); |
| if (index != -1) { |
| TabItem item = items [index]; |
| Control control = item.control; |
| if (control != null && !control.isDisposed ()) { |
| control.setBounds (getClientArea ()); |
| } |
| } |
| return result; |
| } |
| |
| LRESULT WM_WINDOWPOSCHANGING (int wParam, int lParam) { |
| LRESULT result = super.WM_WINDOWPOSCHANGING (wParam, lParam); |
| if (result != null) return result; |
| if (!OS.IsWindowVisible (handle)) return result; |
| WINDOWPOS lpwp = new WINDOWPOS (); |
| OS.MoveMemory (lpwp, lParam, WINDOWPOS.sizeof); |
| if ((lpwp.flags & (OS.SWP_NOSIZE | OS.SWP_NOREDRAW)) != 0) { |
| return result; |
| } |
| int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); |
| if ((bits & OS.TCS_MULTILINE) != 0) { |
| OS.InvalidateRect (handle, null, true); |
| return result; |
| } |
| RECT rect = new RECT (); |
| OS.SetRect (rect, 0, 0, lpwp.cx, lpwp.cy); |
| OS.SendMessage (handle, OS.WM_NCCALCSIZE, 0, rect); |
| int newWidth = rect.right - rect.left; |
| int newHeight = rect.bottom - rect.top; |
| OS.GetClientRect (handle, rect); |
| int oldWidth = rect.right - rect.left; |
| int oldHeight = rect.bottom - rect.top; |
| if (newWidth == oldWidth && newHeight == oldHeight) { |
| return result; |
| } |
| RECT inset = new RECT (); |
| OS.SendMessage (handle, OS.TCM_ADJUSTRECT, 0, inset); |
| int marginX = -inset.right, marginY = -inset.bottom; |
| if (newWidth != oldWidth) { |
| int left = oldWidth; |
| if (newWidth < oldWidth) left = newWidth; |
| OS.SetRect (rect, left - marginX, 0, newWidth, newHeight); |
| OS.InvalidateRect (handle, rect, true); |
| } |
| if (newHeight != oldHeight) { |
| int bottom = oldHeight; |
| if (newHeight < oldHeight) bottom = newHeight; |
| if (newWidth < oldWidth) oldWidth -= marginX; |
| OS.SetRect (rect, 0, bottom - marginY, oldWidth, newHeight); |
| OS.InvalidateRect (handle, rect, true); |
| } |
| return result; |
| } |
| |
| LRESULT wmNotifyChild (int wParam, int lParam) { |
| NMHDR hdr = new NMHDR (); |
| OS.MoveMemory (hdr, lParam, NMHDR.sizeof); |
| int code = hdr.code; |
| switch (code) { |
| case OS.TCN_SELCHANGE: |
| case OS.TCN_SELCHANGING: |
| TabItem item = null; |
| int index = OS.SendMessage (handle, OS.TCM_GETCURSEL, 0, 0); |
| if (index != -1) item = items [index]; |
| if (item != null) { |
| Control control = item.control; |
| if (control != null && !control.isDisposed ()) { |
| if (code == OS.TCN_SELCHANGE) { |
| control.setBounds (getClientArea ()); |
| } |
| control.setVisible (code == OS.TCN_SELCHANGE); |
| } |
| } |
| if (code == OS.TCN_SELCHANGE) { |
| Event event = new Event (); |
| event.item = item; |
| postEvent (SWT.Selection, event); |
| } |
| } |
| return super.wmNotifyChild (wParam, lParam); |
| } |
| |
| } |