| /******************************************************************************* |
| * 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.*; |
| import org.eclipse.swt.internal.photon.*; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.events.*; |
| |
| /** |
| * Instances of this class are selectable user interface |
| * objects that allow the user to enter and modify text. |
| * <p> |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>CENTER, LEFT, MULTI, SINGLE, RIGHT, READ_ONLY, WRAP</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>DefaultSelection, Modify, Verify</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the styles MULTI and SINGLE may be specified. |
| * </p><p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| */ |
| public class Text extends Scrollable { |
| char echoCharacter; |
| boolean ignoreChange; |
| String hiddenText; |
| int tabs, lastModifiedText; |
| PtTextCallback_t textVerify; |
| |
| public static final int LIMIT; |
| public static final String DELIMITER; |
| /* |
| * These values can be different on different platforms. |
| * Therefore they are not initialized in the declaration |
| * to stop the compiler from inlining. |
| */ |
| static { |
| LIMIT = 0x7FFFFFFF; |
| DELIMITER = "\n"; |
| } |
| |
| /** |
| * 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#SINGLE |
| * @see SWT#MULTI |
| * @see SWT#READ_ONLY |
| * @see SWT#WRAP |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public Text (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| } |
| |
| static int checkStyle (int style) { |
| style = checkBits (style, SWT.LEFT, SWT.CENTER, SWT.RIGHT, 0, 0, 0); |
| if ((style & SWT.SINGLE) != 0) style &= ~(SWT.H_SCROLL | SWT.V_SCROLL | SWT.WRAP); |
| if ((style & SWT.WRAP) != 0) style |= SWT.MULTI; |
| if ((style & (SWT.SINGLE | SWT.MULTI)) != 0) return style; |
| if ((style & (SWT.H_SCROLL | SWT.V_SCROLL)) != 0) { |
| return style | SWT.MULTI; |
| } |
| return style | SWT.SINGLE; |
| } |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget(); |
| |
| int [] args = new int [] {OS.Pt_ARG_WIDTH, 0, 0, OS.Pt_ARG_HEIGHT, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| boolean wrap = (style & SWT.WRAP) != 0; |
| if (wrap) { |
| if (wHint == SWT.DEFAULT) { |
| OS.PtSetResource (handle, OS.Pt_ARG_MULTITEXT_WRAP_FLAGS, OS.Pt_EMT_NEWLINE, ~0); |
| } else { |
| OS.PtSetResource (handle, OS.Pt_ARG_WIDTH, wHint, 0); |
| } |
| } |
| int resizeFlags = OS.Pt_RESIZE_X_ALWAYS | OS.Pt_RESIZE_Y_ALWAYS; |
| OS.PtSetResource (handle, OS.Pt_ARG_RESIZE_FLAGS, resizeFlags, OS.Pt_RESIZE_XY_BITS); |
| if ((style & SWT.MULTI) != 0 || !OS.PtWidgetIsRealized (handle)) OS.PtExtentWidgetFamily (handle); |
| PhDim_t dim = new PhDim_t (); |
| OS.PtWidgetPreferredSize (handle, dim); |
| int width = dim.w, height = dim.h; |
| OS.PtSetResource (handle, OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS); |
| if (wrap) { |
| if (wHint == SWT.DEFAULT) { |
| int wrapFlags = OS.Pt_EMT_WORD | OS.Pt_EMT_CHAR | OS.Pt_EMT_NEWLINE; |
| OS.PtSetResource (handle, OS.Pt_ARG_MULTITEXT_WRAP_FLAGS, wrapFlags, ~0); |
| } |
| } |
| OS.PtSetResources (handle, args.length / 3, args); |
| |
| ScrollBar scroll; |
| int scrollWidth = (scroll = getVerticalBar ()) != null ? scroll.getSize ().x : 0; |
| int scrollHeight = (scroll = getHorizontalBar ()) != null ? scroll.getSize ().y : 0; |
| width += scrollWidth; |
| if (!wrap) height += scrollHeight; |
| |
| if (wHint != SWT.DEFAULT || hHint != SWT.DEFAULT) { |
| PhRect_t rect = new PhRect_t (); |
| PhArea_t area = new PhArea_t (); |
| rect.lr_x = (short) (wHint - 1); |
| rect.lr_y = (short) (hHint - 1); |
| OS.PtSetAreaFromWidgetCanvas (handle, rect, area); |
| if (wHint != SWT.DEFAULT) width = area.size_w + scrollWidth; |
| if (hHint != SWT.DEFAULT) height = area.size_h + scrollHeight; |
| } |
| return new Point(width, height); |
| } |
| /** |
| * Clears 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 void clearSelection () { |
| checkWidget(); |
| int [] position = {0}; |
| if ((style & SWT.SINGLE) != 0) { |
| int [] args = {OS.Pt_ARG_CURSOR_POSITION, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| position [0] = args [1]; |
| } |
| OS.PtTextSetSelection (handle, position, position); |
| } |
| void createHandle (int index) { |
| state |= HANDLE; |
| Display display = getDisplay (); |
| int parentHandle = parent.parentingHandle (); |
| boolean hasBorder = (style & SWT.BORDER) != 0; |
| int textFlags = (style & SWT.READ_ONLY) != 0 ? 0 : OS.Pt_EDITABLE; |
| if ((style & SWT.SINGLE) != 0) { |
| int clazz = display.PtText; |
| int [] args = { |
| OS.Pt_ARG_FLAGS, hasBorder ? OS.Pt_HIGHLIGHTED : 0, OS.Pt_HIGHLIGHTED, |
| OS.Pt_ARG_FLAGS, OS.Pt_CALLBACKS_ACTIVE, OS.Pt_CALLBACKS_ACTIVE, |
| OS.Pt_ARG_TEXT_FLAGS, textFlags, OS.Pt_EDITABLE, |
| OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS, |
| }; |
| handle = OS.PtCreateWidget (clazz, parentHandle, args.length / 3, args); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| return; |
| } |
| int clazz = display.PtMultiText; |
| int wrapFlags = (style & SWT.WRAP) != 0 ? OS.Pt_EMT_WORD | OS.Pt_EMT_CHAR : 0; |
| int [] args = { |
| OS.Pt_ARG_FLAGS, hasBorder ? OS.Pt_HIGHLIGHTED : 0, OS.Pt_HIGHLIGHTED, |
| OS.Pt_ARG_FLAGS, OS.Pt_CALLBACKS_ACTIVE, OS.Pt_CALLBACKS_ACTIVE, |
| OS.Pt_ARG_TEXT_FLAGS, textFlags, OS.Pt_EDITABLE, |
| OS.Pt_ARG_MULTITEXT_WRAP_FLAGS, wrapFlags, OS.Pt_EMT_WORD | OS.Pt_EMT_CHAR, |
| OS.Pt_ARG_SCROLLBAR_X_DISPLAY, (style & SWT.H_SCROLL) != 0 ? OS.Pt_ALWAYS : OS.Pt_NEVER, 0, |
| OS.Pt_ARG_SCROLLBAR_Y_DISPLAY, (style & SWT.V_SCROLL) != 0 ? OS.Pt_ALWAYS : OS.Pt_NEVER, 0, |
| OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS, |
| }; |
| handle = OS.PtCreateWidget (clazz, parentHandle, args.length / 3, args); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| createStandardScrollBars (); |
| } |
| |
| void createWidget (int index) { |
| super.createWidget (index); |
| // doubleClick = true; |
| setTabStops (tabs = 8); |
| } |
| |
| /** |
| * 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 the listener to the collection of listeners who will |
| * be notified when the control is selected, by sending |
| * it one of the messages defined in the <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * <code>widgetSelected</code> is not called for texts. |
| * <code>widgetDefaultSelected</code> is typically called when ENTER is pressed in a single-line text. |
| * </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 |
| */ |
| public void addVerifyListener (VerifyListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener (listener); |
| addListener (SWT.Verify, typedListener); |
| } |
| |
| /** |
| * Appends a string. |
| * <p> |
| * The new text is appended to the text at |
| * the end of the widget. |
| * </p> |
| * |
| * @param string the string to be appended |
| * |
| * @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> |
| */ |
| public void append (String string) { |
| checkWidget(); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| byte [] buffer = Converter.wcsToMbcs (null, string, false); |
| OS.PtTextModifyText (handle, 0, 0, -1, buffer, buffer.length); |
| } |
| |
| /** |
| * 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> |
| */ |
| public void copy () { |
| checkWidget(); |
| int [] start = new int [1], end = new int [1]; |
| int length = OS.PtTextGetSelection (handle, start, end); |
| if (length <= 0) return; |
| int [] args = {OS.Pt_ARG_TEXT_STRING, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| byte[] buffer = new byte[length + 1]; |
| OS.memmove (buffer, args [1] + start [0], length); |
| int ig = OS.PhInputGroup (0); |
| OS.PhClipboardCopyString((short)ig, buffer); |
| } |
| |
| /** |
| * Cuts the selected text. |
| * <p> |
| * The current selection is first copied to the |
| * clipboard and then deleted from the widget. |
| * </p> |
| * |
| * @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> |
| */ |
| public void cut () { |
| checkWidget(); |
| int [] start = new int [1], end = new int [1]; |
| int length = OS.PtTextGetSelection (handle, start, end); |
| if (length <= 0) return; |
| int [] args = {OS.Pt_ARG_TEXT_STRING, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| byte[] buffer = new byte[length + 1]; |
| OS.memmove (buffer, args [1] + start [0], length); |
| int ig = OS.PhInputGroup (0); |
| OS.PhClipboardCopyString((short)ig, buffer); |
| buffer = new byte[0]; |
| OS.PtTextModifyText (handle, start [0], end [0], start [0], buffer, buffer.length); |
| } |
| |
| void deregister () { |
| super.deregister (); |
| |
| /* |
| * Bug in Photon. Even though the Pt_CB_GOT_FOCUS callback |
| * is added to the multi-line text, the widget parameter |
| * in the callback is a child of the multi-line text. The fix |
| * is to register that child so that the lookup in the widget |
| * table will find the muti-line text. |
| */ |
| if ((style & SWT.MULTI) == 0) return; |
| int child = OS.PtWidgetChildBack (handle); |
| WidgetTable.remove (child); |
| } |
| |
| int defaultBackground () { |
| Display display = getDisplay (); |
| return display.TEXT_BACKGROUND; |
| } |
| |
| int defaultForeground () { |
| Display display = getDisplay (); |
| return display.TEXT_FOREGROUND; |
| } |
| |
| /** |
| * Gets the line number of the caret. |
| * <p> |
| * The line number of the caret is returned. |
| * </p> |
| * |
| * @return the line number |
| * |
| * @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> |
| */ |
| public int getCaretLineNumber () { |
| checkWidget(); |
| //NOT DONE - NOT NEEDED |
| return 0; |
| } |
| |
| /** |
| * Gets the location the caret. |
| * <p> |
| * The location of the caret is returned. |
| * </p> |
| * |
| * @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> |
| */ |
| public Point getCaretLocation () { |
| checkWidget(); |
| //NOT DONE - NOT NEEDED |
| return null; |
| } |
| |
| /** |
| * Gets the position of the caret. |
| * <p> |
| * The character position of the caret is returned. |
| * </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> |
| */ |
| public int getCaretPosition () { |
| checkWidget(); |
| int [] args = {OS.Pt_ARG_CURSOR_POSITION, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| return args [1]; |
| } |
| |
| /** |
| * Gets the number of characters. |
| * |
| * @return number of characters in the widget |
| * |
| * @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 getCharCount () { |
| checkWidget(); |
| int [] args = {OS.Pt_ARG_TEXT_STRING, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| if (args [1] == 0) return 0; |
| return OS.strlen (args [1]); |
| } |
| |
| /** |
| * Gets the double click enabled flag. |
| * <p> |
| * The double click flag enables or disables the |
| * default action of the text widget when the user |
| * double clicks. |
| * </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 boolean getDoubleClickEnabled () { |
| checkWidget(); |
| //NOT DONE - NOT NEEDED |
| return false; |
| } |
| |
| /** |
| * Gets the echo character. |
| * <p> |
| * The echo character is the character that is |
| * displayed when the user enters text or the |
| * text is changed by the programmer. |
| * </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 char getEchoChar () { |
| checkWidget(); |
| return echoCharacter; |
| } |
| |
| /** |
| * Gets the editable 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> |
| */ |
| public boolean getEditable () { |
| checkWidget(); |
| int [] args = {OS.Pt_ARG_TEXT_FLAGS, 0, 0}; |
| OS.PtGetResources(handle, args.length / 3, args); |
| return (args [1] & OS.Pt_EDITABLE) != 0; |
| } |
| |
| /** |
| * Gets the number of lines. |
| * |
| * @return the number of lines in the widget |
| * |
| * @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 getLineCount () { |
| checkWidget(); |
| if ((style & SWT.SINGLE) != 0) return 1; |
| int [] args = {OS.Pt_ARG_MULTITEXT_NUM_LINES, 0, 0}; |
| OS.PtGetResources(handle, args.length / 3, args); |
| return args [1]; |
| } |
| |
| /** |
| * Gets the line delimiter. |
| * |
| * @return a string that is the line delimiter |
| * |
| * @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 getLineDelimiter () { |
| checkWidget(); |
| return "\n"; |
| } |
| |
| /** |
| * Gets the height of a line. |
| * |
| * @return the height of a row of 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 int getLineHeight () { |
| checkWidget(); |
| if ((style & SWT.SINGLE) != 0) { |
| PhDim_t dim = new PhDim_t (); |
| if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidget (handle); |
| OS.PtWidgetPreferredSize (handle, dim); |
| PhRect_t extent = new PhRect_t (); |
| OS.PtWidgetExtent(handle, extent); |
| PhRect_t canvas = new PhRect_t (); |
| OS.PtWidgetCanvas (handle, canvas); |
| int topBorder = canvas.ul_y - extent.ul_y; |
| int bottomBorder = extent.lr_y - canvas.lr_y; |
| return dim.h - topBorder - bottomBorder; |
| } |
| int ptr = OS.malloc (20); |
| int [] args = { |
| OS.Pt_ARG_MULTITEXT_QUERY_LINE, ptr, 1, |
| OS.Pt_ARG_MULTITEXT_LINE_SPACING, 0, 0 |
| }; |
| OS.PtGetResources (handle, args.length / 3, args); |
| int [] line = new int [1]; |
| OS.memmove (line, args [1] + 8, 4); |
| PhRect_t extent = new PhRect_t (); |
| OS.memmove (extent, line [0] + 10, 8); |
| OS.free(ptr); |
| return extent.lr_y - extent.ul_y + 1 + args [4]; |
| } |
| |
| String getNameText () { |
| if ((style & SWT.SINGLE) != 0) return getText (); |
| return getText (0, Math.min(getCharCount () - 1, 10)); |
| } |
| |
| /** |
| * Gets the position of the selected text. |
| * <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 the start and end of 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 Point getSelection () { |
| checkWidget(); |
| if (textVerify != null) { |
| return new Point (textVerify.start_pos, textVerify.end_pos); |
| } |
| int [] start = new int [1], end = new int [1]; |
| OS.PtTextGetSelection (handle, start, end); |
| if (start [0] == -1) { |
| int [] args = {OS.Pt_ARG_CURSOR_POSITION, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| start [0] = end [0] = args [1]; |
| } |
| return new Point (start [0], end [0]); |
| } |
| |
| /** |
| * Gets the number of selected characters. |
| * |
| * @return the number of selected characters. |
| * |
| * @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 getSelectionCount () { |
| checkWidget(); |
| Point selection = getSelection (); |
| return selection.y - selection.x; |
| } |
| |
| /** |
| * Gets the selected text. |
| * |
| * @return the selected 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 getSelectionText () { |
| checkWidget(); |
| /* |
| * NOTE: The current implementation uses substring () |
| * which can reference a potentially large character |
| * array. |
| */ |
| Point selection = getSelection (); |
| return getText ().substring (selection.x, selection.y); |
| } |
| |
| /** |
| * Gets the number of tabs. |
| * <p> |
| * Tab stop spacing is specified in terms of the |
| * space (' ') character. The width of a single |
| * tab stop is the pixel width of the spaces. |
| * </p> |
| * |
| * @return the number of tab characters |
| * |
| * @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 getTabs () { |
| checkWidget(); |
| return tabs; |
| } |
| |
| int getTabWidth (int tabs) { |
| int [] args = new int [] {OS.Pt_ARG_TEXT_FONT, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| PhRect_t rect = new PhRect_t (); |
| int ptr = OS.malloc (1); |
| OS.memmove (ptr, new byte [] {' '}, 1); |
| OS.PfExtentText(rect, null, args [1], ptr, 1); |
| OS.free (ptr); |
| int width = rect.lr_x - rect.ul_x + 1; |
| return width * tabs; |
| } |
| |
| /** |
| * Gets a range of text. |
| * <p> |
| * Indexing is zero based. The range of |
| * a selection is from 0..N-1 where N is |
| * the number of characters in the widget. |
| * </p> |
| * |
| * @param start the start of the range |
| * @param end the end of the range |
| * @return the range of 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 (int start, int end) { |
| checkWidget(); |
| /* |
| * NOTE: The current implementation uses substring () |
| * which can reference a potentially large character |
| * array. |
| */ |
| //NOT DONE - use OS in SINGLE text |
| return getText ().substring (start, end + 1); |
| } |
| |
| /** |
| * Gets the widget text. |
| * <p> |
| * The text for a text widget is the characters in the widget. |
| * </p> |
| * |
| * @return the widget 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(); |
| if (echoCharacter != '\0') return hiddenText; |
| int [] args = {OS.Pt_ARG_TEXT_STRING, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| if (args [1] == 0) return ""; |
| int length = OS.strlen (args [1]); |
| byte [] buffer = new byte [length]; |
| OS.memmove (buffer, args [1], length); |
| char [] unicode = Converter.mbcsToWcs (null, buffer); |
| return new String (unicode); |
| } |
| |
| /** |
| * Returns the maximum number of characters that the receiver is capable of holding. |
| * <p> |
| * If this has not been changed by <code>setTextLimit()</code>, |
| * it will be the constant <code>Text.LIMIT</code>. |
| * </p> |
| * |
| * @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> |
| */ |
| public int getTextLimit () { |
| checkWidget(); |
| int [] args = new int [] {OS.Pt_ARG_MAX_LENGTH, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| return args [1]; |
| } |
| |
| /** |
| * Returns the zero-relative index of the line which is currently |
| * at the top of the receiver. |
| * <p> |
| * This index can change when lines are scrolled or new lines are added or removed. |
| * </p> |
| * |
| * @return the index of the top line |
| * |
| * @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 getTopIndex () { |
| checkWidget(); |
| if ((style & SWT.SINGLE) != 0) return 0; |
| int [] args = {OS.Pt_ARG_MULTITEXT_TOP_LINE, 0, 0}; |
| OS.PtGetResources(handle, args.length / 3, args); |
| return args [1] - 1; |
| } |
| |
| /** |
| * Gets the top pixel. |
| * <p> |
| * The top pixel is the pixel position of the line |
| * that is currently at the top of the widget. On |
| * some platforms, a text widget can be scrolled by |
| * pixels instead of lines so that a partial line |
| * is displayed at the top of the widget. |
| * </p><p> |
| * The top pixel changes when the widget is scrolled. |
| * The top pixel does not include the widget trimming. |
| * </p> |
| * |
| * @return the pixel position of the top line |
| * |
| * @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 getTopPixel () { |
| checkWidget(); |
| //NOT DONE - NOT NEEDED |
| return 0; |
| } |
| |
| void hookEvents () { |
| super.hookEvents (); |
| int windowProc = getDisplay ().windowProc; |
| OS.PtAddCallback (handle, OS.Pt_CB_MODIFY_VERIFY, windowProc, OS.Pt_CB_MODIFY_VERIFY); |
| OS.PtAddCallback (handle, OS.Pt_CB_TEXT_CHANGED, windowProc, OS.Pt_CB_TEXT_CHANGED); |
| } |
| |
| /** |
| * Inserts a string. |
| * <p> |
| * The old selection is replaced with the new text. |
| * </p> |
| * |
| * @param string the string |
| * |
| * @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 insert (String string) { |
| checkWidget(); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| byte [] buffer = Converter.wcsToMbcs (null, string, false); |
| int [] start = new int [1], end = new int [1]; |
| OS.PtTextGetSelection (handle, start, end); |
| if (start [0] == -1) { |
| int [] args = {OS.Pt_ARG_CURSOR_POSITION, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| start [0] = end [0] = args [1]; |
| } |
| OS.PtTextModifyText (handle, start [0], end [0], start [0], buffer, buffer.length); |
| } |
| |
| /** |
| * 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> |
| */ |
| public void paste () { |
| checkWidget(); |
| int ig = OS.PhInputGroup (0); |
| int ptr = OS.PhClipboardPasteString((short)ig); |
| if (ptr == 0) return; |
| int length = OS.strlen (ptr); |
| int [] start = new int [1], end = new int [1]; |
| OS.PtTextGetSelection (handle, start, end); |
| if (start [0] == -1) { |
| int [] args = {OS.Pt_ARG_CURSOR_POSITION, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| start [0] = end [0] = args [1]; |
| } |
| OS.PtTextModifyText (handle, start [0], end [0], end [0], ptr, length); |
| OS.free(ptr); |
| } |
| |
| int Pt_CB_GOT_FOCUS (int widget, int info) { |
| |
| /* |
| * Bug in Photon. Even though the Pt_CB_GOT_FOCUS callback |
| * is added to the multi-line text, the widget parameter |
| * in the callback is a child of the multi-line text. The fix |
| * is to register that child so that the lookup in the widget |
| * table will find the muti-line text and avoid multiple |
| * Pt_CB_LOST_FOCUS callbacks. |
| */ |
| if ((style & SWT.MULTI) != 0) { |
| if (widget != handle) return OS.Pt_CONTINUE; |
| } |
| return super.Pt_CB_GOT_FOCUS (widget, info); |
| } |
| |
| int Pt_CB_MODIFY_VERIFY (int widget, int info) { |
| if (lastModifiedText != 0) { |
| OS.free (lastModifiedText); |
| lastModifiedText = 0; |
| } |
| if (echoCharacter == '\0' && !hooks (SWT.Verify) && !filters (SWT.Verify)) return 0; |
| PtCallbackInfo_t cbinfo = new PtCallbackInfo_t (); |
| OS.memmove (cbinfo, info, PtCallbackInfo_t.sizeof); |
| PtTextCallback_t textVerify = new PtTextCallback_t (); |
| OS.memmove (textVerify, cbinfo.cbdata, PtTextCallback_t.sizeof); |
| byte [] buffer = new byte [textVerify.length]; |
| OS.memmove (buffer, textVerify.text, buffer.length); |
| String text = new String (Converter.mbcsToWcs (null, buffer)); |
| String newText = text; |
| if (!ignoreChange) { |
| Event event = new Event (); |
| event.start = textVerify.start_pos; |
| event.end = textVerify.end_pos; |
| event.doit = textVerify.doit != 0; |
| event.text = text; |
| if (cbinfo.event != 0) { |
| int data = OS.PhGetData (cbinfo.event); |
| if (data != 0) { |
| PhKeyEvent_t ke = new PhKeyEvent_t (); |
| OS.memmove (ke, data, PhKeyEvent_t.sizeof); |
| if ((ke.key_flags & (OS.Pk_KF_Key_Down | OS.Pk_KF_Key_Repeat)) != 0) { |
| setKeyState (event, ke); |
| } |
| } |
| } |
| sendEvent (SWT.Verify, event); |
| newText = event.text; |
| textVerify.doit = (event.doit && newText != null) ? 1 : 0; |
| } |
| if (newText != null) { |
| if (echoCharacter != '\0' && (textVerify.doit != 0)) { |
| String prefix = hiddenText.substring (0, textVerify.start_pos); |
| String suffix = hiddenText.substring (textVerify.end_pos, hiddenText.length ()); |
| hiddenText = prefix + newText + suffix; |
| char [] charBuffer = new char [newText.length ()]; |
| for (int i=0; i<charBuffer.length; i++) { |
| charBuffer [i] = echoCharacter; |
| } |
| newText = new String (charBuffer); |
| } |
| if (newText != text) { |
| byte [] buffer2 = Converter.wcsToMbcs (null, newText, true); |
| int length = buffer2.length - 1; |
| if (length == textVerify.length) { |
| OS.memmove(textVerify.text, buffer2, length); |
| } else { |
| int ptr = OS.malloc (length); |
| OS.memmove (ptr, buffer2, buffer2.length); |
| textVerify.new_insert += length - textVerify.length; |
| textVerify.text = ptr; |
| textVerify.length = length; |
| lastModifiedText = ptr; |
| } |
| } |
| } |
| OS.memmove (cbinfo.cbdata, textVerify, PtTextCallback_t.sizeof); |
| textVerify = null; |
| return OS.Pt_CONTINUE; |
| } |
| |
| int Pt_CB_TEXT_CHANGED (int widget, int info) { |
| if (lastModifiedText != 0) { |
| OS.free (lastModifiedText); |
| lastModifiedText = 0; |
| } |
| if (!ignoreChange) sendEvent (SWT.Modify); |
| return OS.Pt_CONTINUE; |
| } |
| |
| void register () { |
| super.register (); |
| |
| /* |
| * Bug in Photon. Even though the Pt_CB_GOT_FOCUS callback |
| * is added to the multi-line text, the widget parameter |
| * in the callback is a child of the multi-line text. The fix |
| * is to register that child so that the lookup in the widget |
| * table will find the muti-line text. |
| */ |
| if ((style & SWT.MULTI) == 0) return; |
| int child = OS.PtWidgetChildBack (handle); |
| WidgetTable.put (child, this); |
| } |
| |
| void releaseWidget () { |
| super.releaseWidget (); |
| if (lastModifiedText != 0) OS.free (lastModifiedText); |
| lastModifiedText = 0; |
| hiddenText = null; |
| textVerify = null; |
| } |
| |
| /** |
| * 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 control is selected. |
| * |
| * @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 #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 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 |
| */ |
| public void removeVerifyListener (VerifyListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Verify, listener); |
| } |
| |
| /** |
| * Selects all the text 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 void selectAll () { |
| checkWidget(); |
| OS.PtTextSetSelection (handle, new int [] {0}, new int [] {0x7FFFFFFF}); |
| } |
| |
| /** |
| * Sets the echo character. |
| * <p> |
| * The echo character is the character that is |
| * displayed when the user enters text or the |
| * text is changed by the programmer. Setting |
| * the echo character to '\0' clears the echo |
| * character and redraws the original text. |
| * If for any reason the echo character is invalid, |
| * the default echo character for the platform |
| * is used. |
| * </p> |
| * |
| * @param echo the new echo character |
| * |
| * @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 setEchoChar (char echo) { |
| checkWidget(); |
| if (echoCharacter == echo) return; |
| String newText; |
| if (echo == 0) { |
| newText = hiddenText; |
| hiddenText = null; |
| } else { |
| newText = hiddenText = getText(); |
| } |
| echoCharacter = echo; |
| Point selection = getSelection(); |
| boolean oldValue = ignoreChange; |
| ignoreChange = true; |
| setText(newText); |
| setSelection(selection.x, selection.y); |
| ignoreChange = oldValue; |
| } |
| |
| /** |
| * Sets the double click enabled flag. |
| * <p> |
| * The double click flag enables or disables the |
| * default action of the text widget when the user |
| * double clicks. |
| * </p> |
| * |
| * @param doubleClick the new double click flag |
| * |
| * @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 setDoubleClickEnabled (boolean doubleClick) { |
| checkWidget(); |
| //NOT DONE - NOT NEEDED |
| } |
| |
| /** |
| * Sets the editable state. |
| * |
| * @param editable the new editable 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> |
| */ |
| public void setEditable (boolean editable) { |
| checkWidget(); |
| style &= ~SWT.READ_ONLY; |
| if (!editable) style |= SWT.READ_ONLY; |
| int flags = editable ? OS.Pt_EDITABLE : 0; |
| OS.PtSetResource (handle, OS.Pt_ARG_TEXT_FLAGS, flags, OS.Pt_EDITABLE); |
| } |
| |
| public void setFont (Font font) { |
| super.setFont (font); |
| setTabStops (tabs); |
| } |
| |
| /** |
| * Sets the selection. |
| * <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><p> |
| * Text selections are specified in terms of |
| * caret positions. In a text widget that |
| * contains N characters, there are N+1 caret |
| * positions, ranging from 0..N. This differs |
| * from other functions that address character |
| * position such as getText () that use the |
| * regular array indexing rules. |
| * </p> |
| * |
| * @param start new caret position |
| * |
| * @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 position) { |
| checkWidget(); |
| OS.PtSetResource (handle, OS.Pt_ARG_CURSOR_POSITION, position, 0); |
| |
| /* |
| * Feature in Photon. On a single-line text, the selection is |
| * not cleared when setting the cursor position. The fix is to |
| * set the selection start and end values to the specified |
| * position. |
| */ |
| if ((style & SWT.SINGLE) != 0) { |
| int [] selection = {position}; |
| OS.PtTextSetSelection (handle, selection, selection); |
| } |
| } |
| |
| /** |
| * Sets the selection. |
| * <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><p> |
| * Text selections are specified in terms of |
| * caret positions. In a text widget that |
| * contains N characters, there are N+1 caret |
| * positions, ranging from 0..N. This differs |
| * from other functions that address character |
| * position such as getText () that use the |
| * usual array indexing rules. |
| * </p> |
| * |
| * @param selection the point |
| * |
| * @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); |
| setSelection (selection.x, selection.y); |
| } |
| |
| /** |
| * Sets the selection. |
| * <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><p> |
| * Text selections are specified in terms of |
| * caret positions. In a text widget that |
| * contains N characters, there are N+1 caret |
| * positions, ranging from 0..N. This differs |
| * from other functions that address character |
| * position such as getText () that use the |
| * usual array indexing rules. |
| * </p> |
| * |
| * @param start the start of the range |
| * @param end the end of the range |
| * |
| * @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 start, int end) { |
| checkWidget(); |
| OS.PtTextSetSelection (handle, new int [] {start}, new int [] {end}); |
| |
| /* |
| * Feature in Photon. On a multi-line text, the caret position |
| * is not changed with the selection start and end values are |
| * the same. The fix is to detect this case and change the |
| * cursor position. |
| */ |
| if ((style & SWT.MULTI) != 0 && start == end) { |
| OS.PtSetResource (handle, OS.Pt_ARG_CURSOR_POSITION, start, 0); |
| } |
| } |
| |
| /** |
| * Sets the number of tabs. |
| * <p> |
| * Tab stop spacing is specified in terms of the |
| * space (' ') character. The width of a single |
| * tab stop is the pixel width of the spaces. |
| * </p> |
| * |
| * @param tabs the number of tabs |
| * |
| * </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 setTabs (int tabs) { |
| checkWidget(); |
| if (tabs < 0) return; |
| setTabStops (this.tabs = tabs); |
| } |
| |
| void setTabStops (int tabs) { |
| if ((style & SWT.SINGLE) != 0) return; |
| int tabsWidth = getTabWidth (tabs); |
| int ptr = OS.malloc (4); |
| OS.memmove (ptr, new int [] {tabsWidth}, 4); |
| OS.PtSetResource (handle, OS.Pt_ARG_MULTITEXT_TABS, ptr, 1); |
| OS.free (ptr); |
| } |
| |
| /** |
| * Sets the contents of the receiver to the given string. If the receiver has style |
| * SINGLE and the argument contains multiple lines of text, the result of this |
| * operation is undefined and may vary from platform to platform. |
| * |
| * @param text 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); |
| byte [] buffer = Converter.wcsToMbcs (null, string, true); |
| int ptr = OS.malloc (buffer.length); |
| OS.memmove (ptr, buffer, buffer.length); |
| OS.PtSetResource (handle, OS.Pt_ARG_TEXT_STRING, ptr, 0); |
| OS.free (ptr); |
| } |
| |
| /** |
| * Sets the maximum number of characters that the receiver |
| * is capable of holding to be the argument. |
| * <p> |
| * Instead of trying to set the text limit to zero, consider |
| * creating a read-only text widget. |
| * </p><p> |
| * To reset this value to the default, use <code>setTextLimit(Text.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> |
| */ |
| public void setTextLimit (int limit) { |
| checkWidget(); |
| if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO); |
| OS.PtSetResource (handle, OS.Pt_ARG_MAX_LENGTH, limit, 0); |
| } |
| |
| /** |
| * Sets the zero-relative index of the line which is currently |
| * at the top of the receiver. This index can change when lines |
| * are scrolled or new lines are added and removed. |
| * |
| * @param index the index of the top 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 void setTopIndex (int index) { |
| checkWidget(); |
| if ((style & SWT.SINGLE) != 0) return; |
| OS.PtSetResource (handle, OS.Pt_ARG_MULTITEXT_TOP_LINE, index + 1, 0); |
| } |
| |
| /** |
| * Shows the selection. |
| * <p> |
| * If the selection is already showing |
| * in the receiver, this method simply returns. Otherwise, |
| * lines are scrolled until the selection is visible. |
| * </p> |
| * |
| * @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> |
| */ |
| public void showSelection () { |
| checkWidget(); |
| //NOT DONE - NOT NEEDED |
| } |
| |
| int traversalCode (int key_sym, PhKeyEvent_t ke) { |
| int code = super.traversalCode (key_sym, ke); |
| if ((style & SWT.READ_ONLY) != 0) return code; |
| if ((style & SWT.MULTI) != 0) { |
| code &= ~SWT.TRAVERSE_RETURN; |
| if (key_sym == OS.Pk_Tab && ke != null) { |
| if ((ke.key_mods & OS.Pk_KM_Ctrl) == 0) { |
| code &= ~(SWT.TRAVERSE_TAB_NEXT | SWT.TRAVERSE_TAB_PREVIOUS); |
| } |
| } |
| } |
| return code; |
| } |
| |
| boolean translateTraversal (int key_sym, PhKeyEvent_t phEvent) { |
| boolean translated = super.translateTraversal (key_sym, phEvent); |
| if ((style & SWT.SINGLE) != 0 && !translated && key_sym == OS.Pk_Return) { |
| postEvent (SWT.DefaultSelection); |
| return false; |
| } |
| return translated; |
| } |
| |
| int widgetClass () { |
| if ((style & SWT.SINGLE) != 0) return OS.PtText (); |
| return OS.PtMultiText (); |
| } |
| |
| } |