| package org.eclipse.swt.widgets; |
| |
| /* |
| * (c) Copyright IBM Corp. 2000, 2001. |
| * All Rights Reserved |
| */ |
| |
| 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> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| */ |
| |
| public class Text extends Scrollable { |
| int textLimit = LIMIT; |
| boolean visibility = true; |
| 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 |
| * for all SWT widget classes should include a comment which |
| * describes the style constants which are applicable to the class. |
| * </p> |
| * |
| * @param parent a composite control which will be the parent of the new instance (cannot be null) |
| * @param style the style of control to construct |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| * |
| * @see SWT |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public Text (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| } |
| |
| void createHandle (int index) { |
| state |= HANDLE; |
| if ((style & SWT.SINGLE) != 0) { |
| handle = OS.gtk_entry_new (); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| } else { |
| scrolledHandle = OS.gtk_scrolled_window_new (0, 0); |
| if (scrolledHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| handle = OS.gtk_text_new (0, 0); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| } |
| } |
| |
| Point _computeSize (int a, int b, boolean c) { |
| return super._computeSize (a, b, c); |
| } |
| |
| void setHandleStyle() { |
| OS.gtk_editable_set_editable (handle, (style & SWT.READ_ONLY) == 0); |
| if ((style & SWT.SINGLE) == 0) |
| OS.gtk_text_set_word_wrap (handle, (style & SWT.WRAP) != 0 ? 1 : 0); |
| if (scrolledHandle!=0) setScrollingPolicy(); |
| // When 2.0 arrives, we'll be able to set the flat appearance |
| |
| } |
| |
| void configure() { |
| _connectParent(); |
| if (scrolledHandle != 0) { |
| OS.gtk_container_add (scrolledHandle, handle); |
| } |
| } |
| |
| void showHandle() { |
| if (scrolledHandle != 0) OS.gtk_widget_show (scrolledHandle); |
| OS.gtk_widget_show (handle); |
| OS.gtk_widget_realize (handle); |
| } |
| |
| void hookEvents () { |
| //TO DO - get rid of enter/exit for mouse crossing border |
| super.hookEvents(); |
| signal_connect_after(handle, "changed", SWT.Modify, 2); |
| signal_connect (handle, "insert_text", SWT.Verify, 5); |
| signal_connect (handle, "delete_text", SWT.Verify, 4); |
| signal_connect (handle, "activate", SWT.Selection, 2); |
| } |
| |
| /** |
| * 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) { |
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS); |
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED); |
| 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); |
| if ((style & SWT.SINGLE) != 0) { |
| OS.gtk_entry_append_text(handle, buffer); |
| } else { |
| int length = getCharCount(); |
| int [] position = new int [] {length}; |
| OS.gtk_editable_insert_text (handle, buffer, buffer.length, position); |
| OS.gtk_editable_set_position (handle, position [0]); |
| } |
| } |
| |
| static int checkStyle (int style) { |
| if ((style & SWT.SINGLE) != 0) style &= ~(SWT.H_SCROLL | SWT.V_SCROLL); |
| 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; |
| } |
| /** |
| * 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 = OS.gtk_editable_get_position (handle); |
| OS.gtk_editable_delete_selection(handle); |
| OS.gtk_editable_set_position (handle, position); |
| } |
| |
| /** |
| * 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 (); |
| byte [] clipboard = Converter.wcsToMbcs (null, "CLIPBOARD", true); |
| OS.gtk_selection_owner_set(handle, OS.gdk_atom_intern(clipboard, 0), 0); |
| GtkEditable widget = new GtkEditable (); |
| OS.memmove(widget, handle, GtkEditable.sizeof); |
| int start = Math.min(widget.selection_start_pos, widget.selection_end_pos); |
| int end = Math.max(widget.selection_start_pos, widget.selection_end_pos); |
| widget.clipboard_text = OS.gtk_editable_get_chars(handle, start, end); |
| OS.memmove (handle, widget, GtkEditable.sizeof); |
| } |
| /** |
| * 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 (); |
| byte [] clipboard = Converter.wcsToMbcs (null, "CLIPBOARD", true); |
| OS.gtk_selection_owner_set(handle, OS.gdk_atom_intern(clipboard, 0), 0); |
| GtkEditable widget = new GtkEditable (); |
| OS.memmove (widget, handle, GtkEditable.sizeof); |
| int start = Math.min(widget.selection_start_pos, widget.selection_end_pos); |
| int end = Math.max(widget.selection_start_pos, widget.selection_end_pos); |
| widget.clipboard_text = OS.gtk_editable_get_chars(handle, start, end); |
| OS.memmove (handle, widget, GtkEditable.sizeof); |
| OS.gtk_editable_delete_text(handle, start, end); |
| } |
| |
| /** |
| * 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 (); |
| int addr_index=getCaretPosition(); |
| String tmpString= new String(getText(0,addr_index)); |
| return getLineNumberInString(tmpString,'\n'); |
| } |
| |
| /** |
| * 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 (); |
| GtkText gtktext = new GtkText (); |
| OS.memmove (gtktext, handle, GtkText.sizeof); |
| return new Point (gtktext.cursor_pos_x, gtktext.cursor_pos_y); |
| } |
| |
| /** |
| * 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 (); |
| //return OS.gtk_text_get_point (handle); |
| return OS.gtk_editable_get_position (handle); |
| } |
| |
| |
| /** |
| * 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) { |
| int address = OS.gtk_editable_get_chars (handle, 0, -1); |
| int length = OS.strlen (address); |
| OS.g_free (address); |
| return length; |
| } |
| return OS.gtk_text_get_length (handle); |
| } |
| |
| /** |
| * 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 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 (); |
| return visibility ? '\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 (); |
| GtkEditable widget = new GtkEditable (); |
| OS.memmove (widget, handle, GtkEditable.sizeof); |
| return widget.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 (); |
| return getLineNumberInString(new String(getText()),'\n') + 1; |
| } |
| /** |
| * 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 (); |
| Font font = getFont(); |
| GdkFont gdkfont = new GdkFont(); |
| int fontHandle = font.handle; |
| OS.memmove(gdkfont, fontHandle, GdkFont.sizeof); |
| return gdkfont.ascent + gdkfont.descent; |
| |
| } |
| /** |
| * 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 (); |
| GtkEditable widget = new GtkEditable (); |
| OS.memmove (widget, handle, GtkEditable.sizeof); |
| return new Point (widget.selection_start_pos, widget.selection_end_pos); |
| } |
| /** |
| * 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 (); |
| GtkEditable widget = new GtkEditable (); |
| OS.memmove (widget, handle, GtkEditable.sizeof); |
| int start = Math.min(widget.selection_start_pos, widget.selection_end_pos); |
| int end = Math.max(widget.selection_start_pos, widget.selection_end_pos); |
| return end - start; |
| } |
| /** |
| * 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 (); |
| GtkEditable widget = new GtkEditable (); |
| OS.memmove (widget, handle, GtkEditable.sizeof); |
| int start = Math.min(widget.selection_start_pos,widget.selection_end_pos); |
| int end = Math.max(widget.selection_start_pos,widget.selection_end_pos); |
| int address = OS.gtk_editable_get_chars (handle, start, end); |
| int length = OS.strlen (address); |
| byte [] buffer1 = new byte [length]; |
| OS.memmove (buffer1, address, length); |
| OS.g_free (address); |
| char [] buffer2 = Converter.mbcsToWcs (null, buffer1); |
| return new String (buffer2, 0, buffer2.length); |
| } |
| |
| /** |
| * 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 (); |
| GtkText widget= new GtkText(); |
| OS.memmove(widget, handle, GtkText.sizeof); |
| return widget.default_tab_width; |
| } |
| |
| /** |
| * 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 = OS.gtk_editable_get_chars (handle, 0, -1); |
| int length = OS.strlen (address); |
| byte [] buffer1 = new byte [length]; |
| OS.memmove (buffer1, address, length); |
| OS.g_free (address); |
| char [] buffer2 = Converter.mbcsToWcs (null, buffer1); |
| return new String (buffer2, 0, buffer2.length); |
| } |
| |
| /** |
| * 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 = OS.gtk_editable_get_chars (handle, start, end); |
| if (address == 0) return null; |
| int length = OS.strlen (address); |
| byte [] buffer1 = new byte [length]; |
| OS.memmove (buffer1, address, length); |
| OS.g_free (address); |
| char [] buffer2 = Converter.mbcsToWcs (null, buffer1); |
| return new String (buffer2, 0, buffer2.length); |
| } |
| |
| /** |
| * 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.SINGLE) != 0) return textLimit; |
| return 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; |
| GtkText widget = new GtkText (); |
| OS.memmove (widget, handle, GtkText.sizeof); |
| int topCharIndex=widget.first_line_start_index; |
| return (getLineNumberInString(getText(0,topCharIndex), '\n')); |
| //Since getText uses substring (start, end + 1),so topCharIndex-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 (); |
| if ((style & SWT.SINGLE) != 0) return 0; |
| GtkText widget= new GtkText(); |
| OS.memmove(widget, handle, GtkText.sizeof); |
| return widget.first_onscreen_ver_pixel; |
| } |
| |
| boolean getWrap () { |
| checkWidget (); |
| return false; |
| } |
| |
| /** |
| * 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); |
| GtkEditable widget = new GtkEditable (); |
| OS.memmove (widget, handle, GtkEditable.sizeof); |
| int start = Math.min(widget.selection_start_pos, widget.selection_end_pos); |
| int end = Math.max(widget.selection_start_pos, widget.selection_end_pos); |
| OS.gtk_editable_delete_text (handle, start, end); |
| int [] position = new int [] {start}; |
| OS.gtk_editable_insert_text (handle, buffer, buffer.length, position); |
| } |
| |
| /** |
| * 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 (); |
| byte [] clipboard = Converter.wcsToMbcs (null, "CLIPBOARD", true); |
| byte [] compound = Converter.wcsToMbcs (null, "COMPOUND_TEXT", true); |
| int clipboard_atom = OS.gdk_atom_intern (clipboard, 0); |
| int compound_atom = OS.gdk_atom_intern (compound, 0); |
| OS.gtk_selection_convert(handle, clipboard_atom, compound_atom, 0); |
| } |
| |
| int processModify (int arg0, int arg1, int int2) { |
| sendEvent (SWT.Modify); |
| return 0; |
| } |
| |
| int processVerify (int int0, int int1, int int2) { |
| if (!hooks (SWT.Verify)) return 0; |
| if (int2 != 0) { |
| // Insert |
| if (int0 == 0 || int1==0){ |
| return 0; |
| } |
| // int length = OS.strlen (int0); |
| byte [] buffer1 = new byte [int1]; |
| OS.memmove (buffer1, int0, buffer1.length); |
| char [] buffer2 = Converter.mbcsToWcs (null, buffer1); |
| String oldText = new String (buffer2, 0, buffer2.length); |
| int [] position = new int [1]; |
| OS.memmove (position, int2, 4); |
| if (position [0] == -1) position [0] = OS.gtk_text_get_length (handle); |
| String newText = verifyText (oldText, position [0], position [0]); //WRONG POSITION |
| if (newText == null) { |
| byte [] insert_text = Converter.wcsToMbcs (null, "insert-text", true); |
| OS.gtk_signal_emit_stop_by_name (handle, insert_text); |
| return 0; |
| } |
| if (newText != oldText) { |
| int windowProc5 = getDisplay ().windowProc5; |
| byte [] buffer3 = Converter.wcsToMbcs (null, newText); |
| OS.gtk_signal_handler_block_by_func (handle, windowProc5, SWT.Verify); |
| OS.gtk_editable_insert_text (handle, buffer3, buffer3.length, position); |
| OS.gtk_signal_handler_unblock_by_func (handle, windowProc5, SWT.Verify); |
| byte [] insert_text = Converter.wcsToMbcs (null, "insert-text", true); |
| OS.gtk_signal_emit_stop_by_name (handle, insert_text); |
| return 0; |
| } |
| } else { |
| // Delete |
| int address = OS.gtk_editable_get_chars (handle, int0, int1); |
| int length = OS.strlen (address); |
| byte [] buffer1 = new byte [length]; |
| OS.memmove (buffer1, address, length); |
| OS.g_free (address); |
| char [] buffer2 = Converter.mbcsToWcs (null, buffer1); |
| String oldText = new String (buffer2, 0, buffer2.length); |
| String newText = verifyText (oldText, int0, int1); |
| if (newText == null) { |
| byte [] delete_text = Converter.wcsToMbcs (null, "delete-text", true); |
| OS.gtk_signal_emit_stop_by_name (handle, delete_text); |
| return 0; |
| } |
| } |
| return 0; |
| } |
| |
| int processSelection (int int0, int int1, int int2) { |
| postEvent (SWT.DefaultSelection); |
| return 0; |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the receiver's text is modified. |
| * |
| * @param listener the listener which should no longer be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see ModifyListener |
| * @see #addModifyListener |
| */ |
| public void removeModifyListener (ModifyListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Modify, listener); |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the 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.gtk_editable_select_region (handle, 0, -1); |
| } |
| |
| /** |
| * 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. |
| * </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, visibility = echo == '\0'); |
| } |
| } |
| |
| /** |
| * 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 (); |
| OS.gtk_editable_set_editable (handle, editable); |
| } |
| |
| /** |
| * 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 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 setSelection (int start) { |
| checkWidget (); |
| OS.gtk_editable_set_position (handle, start); |
| } |
| |
| /** |
| * 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 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 setSelection (int start, int end) { |
| checkWidget (); |
| OS.gtk_editable_set_position (handle, start); |
| OS.gtk_editable_select_region (handle, start, end); |
| } |
| |
| /** |
| * 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 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 setSelection (Point selection) { |
| checkWidget (); |
| if (selection == null) error (SWT.ERROR_NULL_ARGUMENT); |
| OS.gtk_editable_set_position (handle, selection.x); |
| OS.gtk_editable_select_region (handle, 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 (); |
| GtkText widget= new GtkText(); |
| widget.default_tab_width=tabs; |
| OS.memmove(handle, widget, GtkText.sizeof); |
| } |
| |
| /** |
| * Sets the contents of the receiver to the given string. |
| * |
| * @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); |
| OS.gtk_editable_delete_text (handle, 0, -1); |
| int [] position = new int [1]; |
| byte [] buffer = Converter.wcsToMbcs (null, string); |
| OS.gtk_editable_insert_text (handle, buffer, buffer.length, position); |
| OS.gtk_editable_set_position (handle, 0); |
| } |
| |
| /** |
| * Sets the maximum number of characters that the receiver |
| * is capable of holding to be the argument. |
| * |
| * @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) { |
| textLimit = (short) limit; |
| OS.gtk_entry_set_max_length (handle, (short) 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; |
| if (index > getLineCount()) return; |
| GtkAdjustment adjustment = new GtkAdjustment(); |
| int adjustmentHandle = OS.gtk_scrolled_window_get_vadjustment(scrolledHandle); |
| OS.memmove(adjustment, adjustmentHandle, GtkAdjustment.sizeof); |
| int adjust = (int)(index*adjustment.upper/getLineCount()); |
| if (adjust <= 0) { |
| adjust = 0; |
| verticalBar.setSelection(0); |
| } else { |
| verticalBar.setSelection(adjust); |
| } |
| OS.gtk_adjustment_value_changed(verticalBar.handle); |
| int topindex=getTopIndex(); |
| int lineheight = getLineHeight(); |
| while( topindex != index) { |
| adjust=adjust+lineheight; |
| verticalBar.setSelection(adjust+lineheight); |
| OS.gtk_adjustment_value_changed(verticalBar.handle); |
| topindex=getTopIndex(); |
| } |
| } |
| |
| void setWrap (boolean wrap) { |
| checkWidget (); |
| OS.gtk_text_set_word_wrap(handle, wrap ? 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 (); |
| if ((style & SWT.SINGLE) != 0) return; |
| int start_pos, end_pos, pos; |
| pos = OS.gtk_editable_get_position (handle); |
| GtkEditable widget = new GtkEditable (); |
| OS.memmove (widget, handle, GtkEditable.sizeof); |
| start_pos = Math.min(widget.selection_start_pos, widget.selection_end_pos) ; |
| end_pos = Math.max(widget.selection_start_pos, widget.selection_end_pos) ; |
| GtkText gtktext = new GtkText (); |
| OS.memmove (gtktext, handle, GtkText.sizeof); |
| int topCharIndex=gtktext.first_line_start_index; |
| if ( (topCharIndex > start_pos && topCharIndex < end_pos) || topCharIndex==start_pos || |
| topCharIndex == end_pos) return; |
| if (pos < start_pos || pos > end_pos) { |
| GtkAdjustment adjustment = new GtkAdjustment(); |
| int adjustmentHandle = OS.gtk_scrolled_window_get_vadjustment(scrolledHandle); |
| OS.memmove(adjustment, adjustmentHandle, GtkAdjustment.sizeof); |
| String tmpString= new String(getText(0,start_pos)); |
| int currentln=getLineNumberInString(tmpString, '\n'); |
| int adjust = (int)(currentln*adjustment.upper/getLineCount()-adjustment.page_increment); |
| if (adjust <= 0) |
| OS.gtk_adjustment_set_value (verticalBar.handle, 0); |
| else |
| OS.gtk_adjustment_set_value (verticalBar.handle, adjust); |
| OS.gtk_adjustment_value_changed(verticalBar.handle); |
| OS.gtk_editable_set_position (handle, widget.selection_end_pos); |
| OS.gtk_editable_select_region (handle, widget.selection_start_pos, widget.selection_end_pos); |
| } |
| |
| } |
| |
| 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; |
| } |
| |
| int getLineNumberInString( String string,char delimiter) { |
| int count=0; |
| for (int i=0; i<string.length (); i++) { |
| if (string.charAt (i) == delimiter) count++; |
| } |
| return count; |
| } |
| |
| } |