| package org.eclipse.swt.widgets; |
| |
| /* |
| * Copyright (c) 2000, 2002 IBM Corp. All rights reserved. |
| * This file is 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 |
| */ |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.gtk.*; |
| 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>MULTI, SINGLE, 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 { |
| int bufferHandle, tabs = 8; |
| |
| static final int ITER_SIZEOF = 56; |
| |
| public final static int LIMIT; |
| public final static 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; |
| } |
| |
| void createHandle (int index) { |
| state |= HANDLE; |
| int parentHandle = parent.parentingHandle (); |
| if ((style & SWT.SINGLE) != 0) { |
| handle = OS.gtk_entry_new (); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| OS.gtk_container_add (parentHandle, handle); |
| OS.gtk_editable_set_editable (handle, (style & SWT.READ_ONLY) == 0); |
| OS.gtk_entry_set_has_frame (handle, (style & SWT.BORDER) != 0); |
| OS.gtk_entry_set_activates_default (handle, true); |
| } else { |
| fixedHandle = OS.gtk_fixed_new (); |
| if (fixedHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| OS.gtk_fixed_set_has_window (fixedHandle, true); |
| scrolledHandle = OS.gtk_scrolled_window_new (0, 0); |
| if (scrolledHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| handle = OS.gtk_text_view_new (); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| bufferHandle = OS.gtk_text_view_get_buffer (handle); |
| if (bufferHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| OS.gtk_container_add (parentHandle, fixedHandle); |
| OS.gtk_container_add (fixedHandle, scrolledHandle); |
| OS.gtk_container_add (scrolledHandle, handle); |
| OS.gtk_widget_show (fixedHandle); |
| OS.gtk_widget_show (scrolledHandle); |
| OS.gtk_text_view_set_editable (handle, (style & SWT.READ_ONLY) == 0); |
| if ((style & SWT.WRAP) != 0) OS.gtk_text_view_set_wrap_mode (handle, OS.GTK_WRAP_WORD); |
| int hsp = (style & SWT.H_SCROLL) != 0 ? OS.GTK_POLICY_ALWAYS : OS.GTK_POLICY_NEVER; |
| int vsp = (style & SWT.V_SCROLL) != 0 ? OS.GTK_POLICY_ALWAYS : OS.GTK_POLICY_NEVER; |
| OS.gtk_scrolled_window_set_policy (scrolledHandle, hsp, vsp); |
| if ((style & SWT.BORDER) != 0) { |
| OS.gtk_scrolled_window_set_shadow_type (scrolledHandle, OS.GTK_SHADOW_ETCHED_IN); |
| } |
| } |
| OS.gtk_widget_show (handle); |
| } |
| |
| /** |
| * 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); |
| if ((style & SWT.SINGLE) != 0) { |
| OS.gtk_editable_insert_text (handle, buffer, buffer.length, new int[]{-1}); |
| } else { |
| byte [] position = new byte [ITER_SIZEOF]; |
| OS.gtk_text_buffer_get_end_iter (bufferHandle, position); |
| OS.gtk_text_buffer_insert (bufferHandle, position, buffer, buffer.length); |
| OS.gtk_text_buffer_place_cursor (bufferHandle, position); |
| } |
| } |
| |
| /** |
| * 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 (); |
| if ((style & SWT.SINGLE) != 0) { |
| OS.gtk_editable_delete_selection (handle); |
| } else { |
| byte [] start = new byte [ITER_SIZEOF]; |
| byte [] end = new byte [ITER_SIZEOF]; |
| OS.gtk_text_buffer_get_selection_bounds (bufferHandle, start, end); |
| OS.gtk_text_buffer_delete (bufferHandle, start, end); |
| } |
| } |
| |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget (); |
| if ((style & SWT.SINGLE) != 0) { |
| return super.computeSize (wHint, hHint, changed); |
| } |
| boolean fixWrap = (style & SWT.WRAP) != 0 && wHint == SWT.DEFAULT; |
| if (fixWrap) OS.gtk_text_view_set_wrap_mode (handle, OS.GTK_WRAP_NONE); |
| int width = OS.GTK_WIDGET_WIDTH (handle); |
| int height = OS.GTK_WIDGET_HEIGHT (handle); |
| OS.gtk_widget_set_size_request (handle, wHint, hHint); |
| if ((style & SWT.WRAP) != 0) { |
| while (OS.gtk_events_pending () != 0) { |
| OS.gtk_main_iteration (); |
| } |
| } |
| GtkRequisition requisition = new GtkRequisition (); |
| OS.gtk_widget_size_request (handle, requisition); |
| OS.gtk_widget_set_size_request (handle, width, height); |
| width = wHint == SWT.DEFAULT ? requisition.width : wHint; |
| height = hHint == SWT.DEFAULT ? requisition.height : hHint; |
| if (fixWrap) OS.gtk_text_view_set_wrap_mode (handle, OS.GTK_WRAP_WORD); |
| Rectangle trim = computeTrim (0, 0, width, height); |
| return new Point (trim.width, trim.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> |
| */ |
| public void copy () { |
| checkWidget (); |
| if ((style & SWT.SINGLE) != 0) { |
| OS.gtk_editable_copy_clipboard (handle); |
| } else { |
| int clipboard = OS.gtk_clipboard_get (OS.GDK_NONE); |
| OS.gtk_text_buffer_copy_clipboard (bufferHandle, clipboard); |
| } |
| } |
| |
| /** |
| * 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 (); |
| if ((style & SWT.SINGLE) != 0) { |
| OS.gtk_editable_cut_clipboard (handle); |
| } else { |
| int clipboard = OS.gtk_clipboard_get (OS.GDK_NONE); |
| OS.gtk_text_buffer_cut_clipboard (bufferHandle, clipboard, OS.gtk_text_view_get_editable (handle)); |
| } |
| } |
| |
| GdkColor defaultBackground () { |
| Display display = getDisplay (); |
| return display.COLOR_TEXT_BACKGROUND; |
| } |
| |
| GdkColor defaultForeground () { |
| Display display = getDisplay (); |
| return display.COLOR_TEXT_FOREGROUND; |
| } |
| |
| void deregister () { |
| super.deregister (); |
| if (bufferHandle != 0) WidgetTable.remove (bufferHandle); |
| } |
| |
| GdkColor getBackgroundColor () { |
| return getBaseColor (); |
| } |
| |
| /** |
| * 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 (); |
| if ((style & SWT.SINGLE) != 0) return 1; |
| byte [] position = new byte [ITER_SIZEOF]; |
| int mark = OS.gtk_text_buffer_get_insert (bufferHandle); |
| OS.gtk_text_buffer_get_iter_at_mark (bufferHandle, position, mark); |
| return OS.gtk_text_iter_get_line (position); |
| } |
| |
| /** |
| * 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 (); |
| if ((style & SWT.SINGLE) != 0) return new Point (0, 0); |
| byte [] position = new byte [ITER_SIZEOF]; |
| int mark = OS.gtk_text_buffer_get_insert (bufferHandle); |
| OS.gtk_text_buffer_get_iter_at_mark (bufferHandle, position, mark); |
| GdkRectangle rect = new GdkRectangle (); |
| OS.gtk_text_view_get_iter_location (handle, position, rect); |
| int [] x = new int [1]; |
| int [] y = new int [1]; |
| OS.gtk_text_view_buffer_to_window_coords (handle, OS.GTK_TEXT_WINDOW_TEXT, rect.x, rect.y, x, y); |
| return new Point (x [0], y [0]); |
| } |
| |
| /** |
| * 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 (); |
| if ((style & SWT.SINGLE) != 0) { |
| return OS.gtk_editable_get_position (handle); |
| } |
| byte [] position = new byte [ITER_SIZEOF]; |
| int mark = OS.gtk_text_buffer_get_insert (bufferHandle); |
| OS.gtk_text_buffer_get_iter_at_mark (bufferHandle, position, mark); |
| return OS.gtk_text_iter_get_offset (position); |
| } |
| |
| /** |
| * 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 (); |
| if ((style & SWT.SINGLE) != 0) return getText ().length (); |
| return OS.gtk_text_buffer_get_char_count (bufferHandle); |
| } |
| |
| /** |
| * 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 (); |
| return true; |
| } |
| |
| /** |
| * 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 (); |
| if ((style & SWT.SINGLE) != 0) { |
| if (!OS.gtk_entry_get_visibility (handle)) { |
| return OS.gtk_entry_get_invisible_char (handle); |
| } |
| } |
| return '\0'; |
| } |
| |
| /** |
| * 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 (); |
| if ((style & SWT.SINGLE) != 0) { |
| return OS.gtk_editable_get_editable (handle); |
| } |
| return OS.gtk_text_view_get_editable (handle); |
| } |
| |
| GdkColor getForegroundColor () { |
| return getTextColor (); |
| } |
| |
| /** |
| * 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; |
| return OS.gtk_text_buffer_get_line_count (bufferHandle); |
| } |
| |
| /** |
| * 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 (); |
| return fontHeight (getFontDescription (), handle); |
| } |
| |
| /** |
| * 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 ((style & SWT.SINGLE) != 0) { |
| int [] start = new int [1]; |
| int [] end = new int [1]; |
| OS.gtk_editable_get_selection_bounds (handle, start, end); |
| return new Point (start [0], end [0]); |
| } |
| byte [] start = new byte [ITER_SIZEOF]; |
| byte [] end = new byte [ITER_SIZEOF]; |
| OS.gtk_text_buffer_get_selection_bounds (bufferHandle, start, end); |
| return new Point (OS.gtk_text_iter_get_offset (start), OS.gtk_text_iter_get_offset (end)); |
| } |
| |
| /** |
| * 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 Math.abs (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 (); |
| Point selection = getSelection (); |
| return getText (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) { |
| byte[] buffer = Converter.wcsToMbcs(null, " ", true); |
| int layout = OS.gtk_widget_create_pango_layout (handle, buffer); |
| int [] width = new int [1]; |
| int [] height = new int [1]; |
| OS.pango_layout_get_size (layout, width, height); |
| OS.g_object_unref (layout); |
| return width [0] * tabs; |
| } |
| |
| /** |
| * 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 (); |
| int address; |
| if ((style & SWT.SINGLE) != 0) { |
| address = OS.gtk_entry_get_text (handle); |
| } else { |
| byte [] start = new byte [ITER_SIZEOF]; |
| byte [] end = new byte [ITER_SIZEOF]; |
| OS.gtk_text_buffer_get_bounds (bufferHandle, start, end); |
| address = OS.gtk_text_buffer_get_text (bufferHandle, start, end, true); |
| } |
| if (address == 0) return ""; |
| int length = OS.strlen (address); |
| byte [] buffer = new byte [length]; |
| OS.memmove (buffer, address, length); |
| if ((style & SWT.MULTI) != 0) OS.g_free (address); |
| return new String (Converter.mbcsToWcs (null, buffer)); |
| } |
| |
| /** |
| * 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 (); |
| int address; |
| if ((style & SWT.SINGLE) != 0) { |
| address = OS.gtk_editable_get_chars (handle, start, end + 1); |
| } else { |
| byte [] startIter = new byte [ITER_SIZEOF]; |
| byte [] endIter = new byte [ITER_SIZEOF]; |
| OS.gtk_text_buffer_get_iter_at_offset (bufferHandle, startIter, start); |
| OS.gtk_text_buffer_get_iter_at_offset (bufferHandle, endIter, end + 1); |
| address = OS.gtk_text_buffer_get_text (bufferHandle, startIter, endIter, true); |
| } |
| if (address == 0) return ""; |
| int length = OS.strlen (address); |
| byte [] buffer = new byte [length]; |
| OS.memmove (buffer, address, length); |
| OS.g_free (address); |
| return new String (Converter.mbcsToWcs (null, buffer)); |
| } |
| |
| /** |
| * 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 (); |
| if ((style & SWT.MULTI) != 0) return LIMIT; |
| int limit = OS.gtk_entry_get_max_length (handle); |
| return limit == 0 ? 0xFFFF : limit; |
| } |
| |
| /** |
| * 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; |
| byte [] position = new byte [ITER_SIZEOF]; |
| GdkRectangle rect = new GdkRectangle (); |
| OS.gtk_text_view_get_visible_rect (handle, rect); |
| OS.gtk_text_view_get_line_at_y (handle, position, rect.y, null); |
| return OS.gtk_text_iter_get_line (position); |
| } |
| |
| /** |
| * 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 (); |
| if ((style & SWT.SINGLE) != 0) return 0; |
| byte [] position = new byte [ITER_SIZEOF]; |
| GdkRectangle rect = new GdkRectangle (); |
| OS.gtk_text_view_get_visible_rect (handle, rect); |
| int [] lineTop = new int[1]; |
| OS.gtk_text_view_get_line_at_y (handle, position, rect.y, lineTop); |
| return lineTop [0]; |
| } |
| |
| int gtk_activate (int widget) { |
| postEvent (SWT.DefaultSelection); |
| return 0; |
| } |
| |
| int gtk_changed (int widget) { |
| sendEvent (SWT.Modify); |
| return 0; |
| } |
| |
| int gtk_delete_range (int widget, int iter1, int iter2) { |
| if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return 0; |
| byte [] startIter = new byte [ITER_SIZEOF]; |
| byte [] endIter = new byte [ITER_SIZEOF]; |
| OS.memmove (startIter, iter1, startIter.length); |
| OS.memmove (endIter, iter2, endIter.length); |
| int start = OS.gtk_text_iter_get_offset (startIter); |
| int end = OS.gtk_text_iter_get_offset (endIter); |
| int address = OS.gtk_text_buffer_get_text (bufferHandle, startIter, endIter, true); |
| byte [] buffer = new byte [end - start]; |
| OS.memmove (buffer, address, buffer.length); |
| String oldText = new String (Converter.mbcsToWcs (null, buffer)); |
| String newText = verifyText (oldText, start, end); |
| if (newText == null) { |
| OS.g_signal_stop_emission_by_name (bufferHandle, OS.delete_range); |
| } |
| return 0; |
| } |
| |
| int gtk_delete_text (int widget, int start_pos, int end_pos) { |
| if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return 0; |
| int address = OS.gtk_editable_get_chars (handle, start_pos, end_pos); |
| int length = OS.strlen (address); |
| byte [] buffer = new byte [length]; |
| OS.memmove (buffer, address, length); |
| OS.g_free (address); |
| String oldText = new String (Converter.mbcsToWcs (null, buffer)); |
| String newText = verifyText (oldText, start_pos, end_pos); |
| if (newText == null) { |
| OS.g_signal_stop_emission_by_name (handle, OS.delete_text); |
| } |
| return 0; |
| } |
| |
| int gtk_insert_text (int widget, int int0, int int1, int int2) { |
| if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return 0; |
| if ((style & SWT.SINGLE) != 0) { |
| if (int0 == 0 || int1==0) return 0; |
| byte [] buffer = new byte [int1]; |
| OS.memmove (buffer, int0, buffer.length); |
| String oldText = new String (Converter.mbcsToWcs (null, buffer)); |
| int [] position = new int [1]; |
| OS.memmove (position, int2, 4); |
| if (position [0] == -1) position [0] = getCharCount (); |
| String newText = verifyText (oldText, position [0], position [0]); //WRONG POSITION |
| if (newText == null) { |
| OS.g_signal_stop_emission_by_name (handle, OS.insert_text); |
| return 0; |
| } |
| if (newText != oldText) { |
| byte [] buffer3 = Converter.wcsToMbcs (null, newText, false); |
| OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); |
| OS.gtk_editable_insert_text (handle, buffer3, buffer3.length, position); |
| OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); |
| OS.g_signal_stop_emission_by_name (handle, OS.insert_text); |
| return 0; |
| } |
| } else { |
| byte [] iter = new byte [ITER_SIZEOF]; |
| OS.memmove (iter, int0, iter.length); |
| int start = OS.gtk_text_iter_get_offset (iter); |
| byte [] buffer = new byte [int2]; |
| OS.memmove (buffer, int1, buffer.length); |
| String oldText = new String (Converter.mbcsToWcs (null, buffer)); |
| String newText = verifyText (oldText, start, start); |
| if (newText == null) { |
| OS.g_signal_stop_emission_by_name (bufferHandle, OS.insert_text); |
| return 0; |
| } |
| if (newText != oldText) { |
| byte [] buffer1 = Converter.wcsToMbcs (null, newText, false); |
| OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); |
| OS.gtk_text_buffer_insert (bufferHandle, iter, buffer1, buffer1.length); |
| OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); |
| OS.g_signal_stop_emission_by_name (bufferHandle, OS.insert_text); |
| return 0; |
| } |
| } |
| return 0; |
| } |
| |
| void hookEvents () { |
| super.hookEvents(); |
| Display display = getDisplay (); |
| int windowProc2 = display.windowProc2; |
| int windowProc4 = display.windowProc4; |
| int windowProc5 = display.windowProc5; |
| if ((style & SWT.SINGLE) != 0) { |
| OS.g_signal_connect_after (handle, OS.changed, windowProc2, CHANGED); |
| OS.g_signal_connect (handle, OS.insert_text, windowProc5, INSERT_TEXT); |
| OS.g_signal_connect (handle, OS.delete_text, windowProc4, DELETE_TEXT); |
| OS.g_signal_connect (handle, OS.activate, windowProc2, ACTIVATE); |
| } else { |
| OS.g_signal_connect (bufferHandle, OS.changed, windowProc2, CHANGED); |
| OS.g_signal_connect (bufferHandle, OS.insert_text, windowProc5, INSERT_TEXT); |
| OS.g_signal_connect (bufferHandle, OS.delete_range, windowProc4, DELETE_RANGE); |
| } |
| } |
| |
| int imHandle () { |
| return 0; |
| } |
| |
| /** |
| * 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); |
| if ((style & SWT.SINGLE) != 0) { |
| int [] start = new int [1], end = new int [1]; |
| OS.gtk_editable_get_selection_bounds (handle, start, end); |
| OS.gtk_editable_delete_selection (handle); |
| OS.gtk_editable_insert_text (handle, buffer, buffer.length, start); |
| } else { |
| byte [] start = new byte [ITER_SIZEOF]; |
| byte [] end = new byte [ITER_SIZEOF]; |
| if (OS.gtk_text_buffer_get_selection_bounds (bufferHandle, start, end)) { |
| OS.gtk_text_buffer_delete (bufferHandle, start, end); |
| } |
| OS.gtk_text_buffer_insert (bufferHandle, start, buffer, buffer.length); |
| OS.gtk_text_buffer_place_cursor (bufferHandle, start); |
| } |
| } |
| |
| int paintWindow () { |
| OS.gtk_widget_realize (handle); |
| if ((style & SWT.SINGLE) != 0) return OS.GTK_WIDGET_WINDOW (handle); |
| return OS.gtk_text_view_get_window (handle, OS.GTK_TEXT_WINDOW_TEXT); |
| } |
| |
| /** |
| * 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 (); |
| if ((style & SWT.SINGLE) != 0) { |
| OS.gtk_editable_paste_clipboard (handle); |
| } else { |
| int clipboard = OS.gtk_clipboard_get (OS.GDK_NONE); |
| OS.gtk_text_buffer_paste_clipboard (bufferHandle, clipboard, null, OS.gtk_text_view_get_editable (handle)); |
| } |
| } |
| |
| void register () { |
| super.register (); |
| if (bufferHandle != 0) WidgetTable.put (bufferHandle, this); |
| } |
| |
| /** |
| * 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 (); |
| if ((style & SWT.SINGLE) != 0) { |
| OS.gtk_editable_select_region (handle, 0, -1); |
| } else { |
| byte [] start = new byte [ITER_SIZEOF]; |
| byte [] end = new byte [ITER_SIZEOF]; |
| OS.gtk_text_buffer_get_iter_at_offset (bufferHandle, start, 0); |
| OS.gtk_text_buffer_get_end_iter (bufferHandle, end); |
| int insertMark = OS.gtk_text_buffer_get_insert (bufferHandle); |
| int selectionMark = OS.gtk_text_buffer_get_selection_bound (bufferHandle); |
| OS.gtk_text_buffer_move_mark (bufferHandle, selectionMark, start); |
| OS.gtk_text_buffer_move_mark (bufferHandle, insertMark, end); |
| } |
| } |
| |
| void setBackgroundColor (GdkColor color) { |
| super.setBackgroundColor (color); |
| OS.gtk_widget_modify_base (handle, 0, color); |
| } |
| |
| /** |
| * 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 (); |
| } |
| |
| /** |
| * 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 ((style & SWT.SINGLE) != 0) { |
| OS.gtk_entry_set_visibility (handle, echo == '\0'); |
| OS.gtk_entry_set_invisible_char (handle, echo); |
| } |
| } |
| |
| /** |
| * 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; |
| if ((style & SWT.SINGLE) != 0) { |
| OS.gtk_editable_set_editable (handle, editable); |
| } else { |
| OS.gtk_text_view_set_editable (handle, editable); |
| } |
| } |
| |
| void setFontDescription (int font) { |
| super.setFontDescription (font); |
| setTabStops (tabs); |
| } |
| |
| void setForegroundColor (GdkColor color) { |
| super.setForegroundColor (color); |
| OS.gtk_widget_modify_text (handle, 0, color); |
| } |
| |
| /** |
| * 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 start) { |
| checkWidget (); |
| if ((style & SWT.SINGLE) != 0) { |
| OS.gtk_editable_set_position (handle, start); |
| } else { |
| byte [] position = new byte [ITER_SIZEOF]; |
| OS.gtk_text_buffer_get_iter_at_offset (bufferHandle, position, start); |
| OS.gtk_text_buffer_place_cursor (bufferHandle, position); |
| } |
| } |
| |
| /** |
| * 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 (); |
| if ((style & SWT.SINGLE) != 0) { |
| OS.gtk_editable_set_position (handle, start); |
| OS.gtk_editable_select_region (handle, start, end); |
| } else { |
| byte [] startIter = new byte [ITER_SIZEOF]; |
| byte [] endIter = new byte [ITER_SIZEOF]; |
| OS.gtk_text_buffer_get_iter_at_offset (bufferHandle, startIter, start); |
| OS.gtk_text_buffer_get_iter_at_offset (bufferHandle, endIter, end); |
| int insertMark = OS.gtk_text_buffer_get_insert (bufferHandle); |
| int selectionMark = OS.gtk_text_buffer_get_selection_bound (bufferHandle); |
| OS.gtk_text_buffer_move_mark (bufferHandle, selectionMark, startIter); |
| OS.gtk_text_buffer_move_mark (bufferHandle, insertMark, endIter); |
| } |
| } |
| |
| /** |
| * 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 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 tabWidth = getTabWidth (tabs); |
| int tabArray = OS.pango_tab_array_new (1, false); |
| OS.pango_tab_array_set_tab (tabArray, 0, OS.PANGO_TAB_LEFT, tabWidth); |
| OS.gtk_text_view_set_tabs (handle, tabArray); |
| OS.pango_tab_array_free (tabArray); |
| } |
| |
| /** |
| * 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, false); |
| if ((style & SWT.SINGLE) != 0) { |
| OS.gtk_editable_delete_text (handle, 0, -1); |
| int [] position = new int [1]; |
| OS.gtk_editable_insert_text (handle, buffer, buffer.length, position); |
| OS.gtk_editable_set_position (handle, 0); |
| } else { |
| byte [] position = new byte [ITER_SIZEOF]; |
| OS.gtk_text_buffer_set_text (bufferHandle, buffer, buffer.length); |
| OS.gtk_text_buffer_get_iter_at_offset (bufferHandle, position, 0); |
| OS.gtk_text_buffer_place_cursor (bufferHandle, position); |
| } |
| } |
| |
| /** |
| * 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); |
| if ((style & SWT.SINGLE) != 0) OS.gtk_entry_set_max_length (handle, limit); |
| } |
| |
| /** |
| * 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; |
| byte [] position = new byte [ITER_SIZEOF]; |
| OS.gtk_text_buffer_get_iter_at_line (bufferHandle, position, index); |
| OS.gtk_text_view_scroll_to_iter (handle, position, 0, true, 0, 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 (); |
| if ((style & SWT.SINGLE) != 0) return; |
| int mark = OS.gtk_text_buffer_get_selection_bound (bufferHandle); |
| OS.gtk_text_view_scroll_mark_onscreen (handle, mark); |
| mark = OS.gtk_text_buffer_get_insert (bufferHandle); |
| OS.gtk_text_view_scroll_mark_onscreen (handle, mark); |
| } |
| |
| int traversalCode (int key, GdkEventKey event) { |
| int bits = super.traversalCode (key, event); |
| if ((style & SWT.READ_ONLY) != 0) return bits; |
| if ((style & SWT.MULTI) != 0) { |
| bits &= ~SWT.TRAVERSE_RETURN; |
| if (key == OS.GDK_Tab && event != null) { |
| boolean next = (event.state & OS.GDK_SHIFT_MASK) == 0; |
| if (next && (event.state & OS.GDK_CONTROL_MASK) == 0) { |
| bits &= ~(SWT.TRAVERSE_TAB_NEXT | SWT.TRAVERSE_TAB_PREVIOUS); |
| } |
| } |
| } |
| return bits; |
| } |
| |
| String verifyText (String string, int start, int end) { |
| Event event = new Event (); |
| event.text = string; |
| event.start = start; |
| event.end = end; |
| sendEvent (SWT.Verify, event); |
| if (!event.doit) return null; |
| return event.text; |
| } |
| |
| } |