| /******************************************************************************* |
| * Copyright (c) 2000, 2011 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.internal.wpf.*; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.events.*; |
| |
| /** |
| * Instances of this class are selectable user interface |
| * objects that allow the user to enter and modify text. |
| * Text controls can be either single or multi-line. |
| * When a text control is created with a border, the |
| * operating system includes a platform specific inset |
| * around the contents of the control. When created |
| * without a border, an effort is made to remove the |
| * inset such that the preferred size of the control |
| * is the same size as the contents. |
| * <p> |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>CENTER, ICON_CANCEL, ICON_SEARCH, LEFT, MULTI, PASSWORD, SEARCH, SINGLE, RIGHT, READ_ONLY, WRAP</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>DefaultSelection, Modify, Verify, OrientationChange</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the styles MULTI and SINGLE may be specified, |
| * and only one of the styles LEFT, CENTER, and RIGHT may be specified. |
| * </p> |
| * <p> |
| * Note: The styles ICON_CANCEL and ICON_SEARCH are hints used in combination with SEARCH. |
| * When the platform supports the hint, the text control shows these icons. When an icon |
| * is selected, a default selection event is sent with the detail field set to one of |
| * ICON_CANCEL or ICON_SEARCH. Normally, application code does not need to check the |
| * detail. In the case of ICON_CANCEL, the text is cleared before the default selection |
| * event is sent causing the application to search for an empty string. |
| * </p> |
| * <p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| * |
| * @see <a href="http://www.eclipse.org/swt/snippets/#text">Text snippets</a> |
| * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| * @noextend This class is not intended to be subclassed by clients. |
| */ |
| public class Text extends Scrollable { |
| boolean doubleClick; |
| |
| /** |
| * The maximum number of characters that can be entered |
| * into a text widget. |
| * <p> |
| * Note that this value is platform dependent, based upon |
| * the native widget implementation. |
| * </p> |
| */ |
| public static final int LIMIT; |
| |
| /** |
| * The delimiter used by multi-line text widgets. When text |
| * is queried and from the widget, it will be delimited using |
| * this delimiter. |
| */ |
| public static final String DELIMITER; |
| |
| /* |
| * This code is intentionally commented. |
| */ |
| // static final char PASSWORD; |
| |
| /* |
| * 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 = "\r\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 SWT#LEFT |
| * @see SWT#RIGHT |
| * @see SWT#CENTER |
| * @see SWT#PASSWORD |
| * @see SWT#SEARCH |
| * @see SWT#ICON_SEARCH |
| * @see SWT#ICON_CANCEL |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public Text (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| } |
| |
| /** |
| * 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 the user, 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, |
| * or when ENTER is pressed in a search text. If the receiver has the <code>SWT.SEARCH | SWT.CANCEL</code> style |
| * and the user cancels the search, the event object detail field contains the value <code>SWT.CANCEL</code>. |
| * </p> |
| * |
| * @param listener the listener which should be notified when the control is selected by the user |
| * |
| * @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 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 append (String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if ((style & SWT.PASSWORD) != 0) return; |
| OS.TextBox_SelectionStart (handle, getCharCount ()); |
| if (hooks (SWT.Verify) || filters (SWT.Verify)) { |
| int start = OS.TextBox_SelectionStart (handle); |
| int end = start + OS.TextBox_SelectionLength (handle); |
| string = verifyText (string, start, end, false); |
| if (string == null) return; |
| } |
| int strPtr = createDotNetString (string, false); |
| OS.TextBoxBase_AppendText (handle, strPtr); |
| OS.TextBox_SelectionLength (handle, 0); |
| OS.GCHandle_Free (strPtr); |
| } |
| |
| static int checkStyle (int style) { |
| if ((style & SWT.SEARCH) != 0) { |
| style |= SWT.SINGLE | SWT.BORDER; |
| style &= ~SWT.PASSWORD; |
| } |
| style &= ~SWT.SEARCH; |
| if ((style & SWT.SINGLE) != 0 && (style & SWT.MULTI) != 0) { |
| style &= ~SWT.MULTI; |
| } |
| 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; |
| style &= ~SWT.H_SCROLL; |
| } |
| if ((style & SWT.MULTI) != 0) style &= ~SWT.PASSWORD; |
| 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 (); |
| if ((style & SWT.PASSWORD) != 0) return; |
| int start = OS.TextBox_SelectionStart (handle); |
| int len = OS.TextBox_SelectionLength (handle); |
| OS.TextBox_SelectionStart (handle, start + len); |
| OS.TextBox_SelectionLength (handle, 0); |
| } |
| |
| /** |
| * 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.PASSWORD) != 0) return; |
| OS.TextBoxBase_Copy (handle); |
| } |
| |
| void createHandle () { |
| if ((style & SWT.PASSWORD) != 0) { |
| handle = OS.gcnew_PasswordBox (); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| return; |
| } |
| handle = OS.gcnew_TextBox (); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| if ((style & SWT.MULTI) != 0) { |
| OS.TextBoxBase_AcceptsReturn (handle, true); |
| OS.TextBoxBase_AcceptsTab (handle, true); |
| if ((style & SWT.WRAP) != 0) OS.TextBox_TextWrapping (handle, OS.TextWrapping_Wrap); |
| } |
| if ((style & SWT.BORDER) == 0) { |
| int thickness = OS.gcnew_Thickness (0, 0, 0, 0); |
| OS.Control_BorderThickness (handle, thickness); |
| OS.Control_Padding(handle, thickness); |
| OS.GCHandle_Free (thickness); |
| } |
| |
| if ((style & SWT.READ_ONLY) != 0) OS.TextBoxBase_IsReadOnly (handle, true); |
| if ((style & SWT.CENTER) != 0) OS.Control_HorizontalContentAlignment (handle, OS.HorizontalAlignment_Center); |
| if ((style & SWT.RIGHT) != 0) OS.Control_HorizontalContentAlignment (handle, OS.HorizontalAlignment_Right); |
| if ((style & SWT.V_SCROLL) != 0) OS.TextBoxBase_VerticalScrollBarVisibility (handle, OS.ScrollBarVisibility_Visible); |
| if ((style & SWT.H_SCROLL) != 0) OS.TextBoxBase_HorizontalScrollBarVisibility (handle, OS.ScrollBarVisibility_Visible); |
| } |
| |
| void createWidget () { |
| super.createWidget (); |
| doubleClick = true; |
| // setTabStops (8); |
| } |
| |
| /** |
| * Cuts the selected text. |
| * <p> |
| * The current selection is first copied to the |
| * clipboard and then deleted from the widget. |
| * </p> |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void cut () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) return; |
| if ((style & SWT.PASSWORD) != 0) return; |
| OS.TextBoxBase_Cut (handle); |
| } |
| |
| /** |
| * Returns the line number of the caret. |
| * <p> |
| * The line number of the caret is returned. |
| * </p> |
| * |
| * @return the line number |
| * |
| * @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 0; |
| if ((style & SWT.PASSWORD) != 0) return 0; |
| int caretIndex = OS.TextBox_CaretIndex (handle); |
| return OS.TextBox_GetLineIndexFromCharacterIndex (handle, caretIndex); |
| } |
| |
| /** |
| * Returns a point describing the receiver's location relative |
| * to its parent (or its display if its parent is null). |
| * <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.PASSWORD) != 0) return new Point (0, 0); |
| int caretIndex = OS.TextBox_CaretIndex (handle); |
| int rect = OS.TextBox_GetRectFromCharacterIndex (handle, caretIndex); |
| Point result = new Point ((int)OS.Rect_X (rect), (int)OS.Rect_Y (rect)); |
| OS.GCHandle_Free (rect); |
| return result; |
| } |
| |
| /** |
| * Returns the character position of the caret. |
| * <p> |
| * Indexing is zero based. |
| * </p> |
| * |
| * @return the position of the caret |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int getCaretPosition () { |
| checkWidget (); |
| if ((style & SWT.PASSWORD) != 0) return 0; |
| return OS.TextBox_CaretIndex (handle); |
| } |
| |
| /** |
| * Returns the number of characters. |
| * |
| * @return number of characters in the widget |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int getCharCount () { |
| checkWidget (); |
| int text; |
| if ((style & SWT.PASSWORD) != 0) { |
| text = OS.PasswordBox_Password (handle); |
| } else { |
| text = OS.TextBox_Text (handle); |
| } |
| int length = OS.String_Length (text); |
| OS.GCHandle_Free (text); |
| return length; |
| } |
| |
| /** |
| * Returns 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> |
| * |
| * @return whether or not double click is enabled |
| * |
| * @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 doubleClick; |
| } |
| |
| /** |
| * Returns 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> |
| * |
| * @return the 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> |
| * |
| * @see #setEchoChar |
| */ |
| public char getEchoChar () { |
| checkWidget (); |
| if ((style & SWT.PASSWORD) == 0) return 0; |
| return OS.PasswordBox_PasswordChar (handle); |
| } |
| |
| /** |
| * Returns the editable state. |
| * |
| * @return whether or not the receiver is editable |
| * |
| * @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.PASSWORD) != 0) return true; |
| return !OS.TextBoxBase_IsReadOnly (handle); |
| } |
| |
| /** |
| * Returns 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; |
| if ((style & SWT.PASSWORD) != 0) return 1; |
| int lines = OS.TextBox_LineCount (handle); |
| if (lines == -1) { |
| updateLayout (handle); |
| lines = OS.TextBox_LineCount (handle); |
| } |
| return lines; |
| } |
| |
| /** |
| * Returns 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> |
| * |
| * @see #DELIMITER |
| */ |
| public String getLineDelimiter () { |
| checkWidget (); |
| return DELIMITER; |
| } |
| |
| /** |
| * Returns 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 (); |
| int family = OS.Control_FontFamily (handle); |
| double lineSpacing = OS.FontFamily_LineSpacing (family); |
| OS.GCHandle_Free (family); |
| double size = OS.Control_FontSize (handle); |
| return (int) (lineSpacing * size); |
| } |
| |
| /** |
| * Returns the widget message. The message text is displayed |
| * as a hint for the user, indicating the purpose of the field. |
| * <p> |
| * Typically this is used in conjunction with <code>SWT.SEARCH</code>. |
| * </p> |
| * |
| * @return the widget message |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.3 |
| */ |
| public String getMessage () { |
| checkWidget (); |
| return ""; |
| } |
| |
| /** |
| * Returns the orientation of the receiver, which will be one of the |
| * constants <code>SWT.LEFT_TO_RIGHT</code> or <code>SWT.RIGHT_TO_LEFT</code>. |
| * |
| * @return the orientation style |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 2.1.2 |
| */ |
| public int getOrientation () { |
| checkWidget(); |
| return style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT); |
| } |
| |
| /** |
| * Returns a <code>Point</code> whose x coordinate is the |
| * character position representing the start of the selected |
| * text, and whose y coordinate is the character position |
| * representing the end of the selection. An "empty" selection |
| * is indicated by the x and y coordinates having the same value. |
| * <p> |
| * Indexing is zero based. The range of a selection is from |
| * 0..N where N is the number of characters in the widget. |
| * </p> |
| * |
| * @return a point representing the selection start and end |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public Point getSelection () { |
| checkWidget (); |
| if ((style & SWT.PASSWORD) != 0) return new Point (0, 0); |
| int start = OS.TextBox_SelectionStart (handle); |
| int length = OS.TextBox_SelectionLength (handle); |
| return new Point (start, start+length); |
| } |
| |
| /** |
| * Returns the number of selected characters. |
| * |
| * @return the number of selected characters. |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int getSelectionCount () { |
| checkWidget (); |
| Point selection = getSelection (); |
| return selection.y - selection.x; |
| } |
| |
| /** |
| * Gets the selected text, or an empty string if there is no current selection. |
| * |
| * @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 (); |
| if ((style & SWT.PASSWORD) != 0) return ""; |
| int content = OS.TextBox_SelectedText (handle); |
| String string = createJavaString (content); |
| OS.GCHandle_Free (content); |
| return string; |
| } |
| |
| /** |
| * Returns 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 (); |
| //FIXME |
| return 8; |
| } |
| |
| /** |
| * Returns the widget text. |
| * <p> |
| * The text for a text widget is the characters in the widget, or |
| * an empty string if this has never been set. |
| * </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 text; |
| if ((style & SWT.PASSWORD) != 0) { |
| text = OS.PasswordBox_Password (handle); |
| } else { |
| text = OS.TextBox_Text (handle); |
| } |
| String string = createJavaString (text); |
| OS.GCHandle_Free (text); |
| return string; |
| } |
| |
| /** |
| * Returns a range of text. Returns an empty string if the |
| * start of the range is greater than the end. |
| * <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 (); |
| if (!(start <= end && 0 <= end)) return ""; |
| String text = getText (); |
| int length = text.length(); |
| end = Math.min (end, length - 1); |
| if (start > end) return ""; |
| start = Math.max (0, start); |
| /* |
| * NOTE: The current implementation uses substring () |
| * which can reference a potentially large character |
| * array. |
| */ |
| return text.substring (start, end + 1); |
| } |
| |
| /** |
| * Returns the widget's text as a character array. |
| * <p> |
| * The text for a text widget is the characters in the widget, or |
| * a zero-length array if this has never been set. |
| * </p> |
| * |
| * @return a character array that contains the widget's text |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see #setTextChars(char[]) |
| * |
| * @since 3.7 |
| */ |
| public char [] getTextChars () { |
| checkWidget(); |
| return new char [0]; |
| } |
| |
| /** |
| * 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> |
| * |
| * @see #LIMIT |
| */ |
| public int getTextLimit () { |
| checkWidget (); |
| if ((style & SWT.PASSWORD) != 0) return OS.PasswordBox_MaxLength (handle); |
| return OS.TextBox_MaxLength (handle); |
| } |
| |
| /** |
| * 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; |
| if ((style & SWT.PASSWORD) != 0) return 0; |
| return OS.TextBox_GetFirstVisibleLineIndex (handle); |
| } |
| |
| /** |
| * Returns 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 (); |
| int name = createDotNetString ("PART_ContentHost", false); |
| int template = OS.Control_Template (handle); |
| int scroller = OS.FrameworkTemplate_FindName (template, name, handle); |
| if (scroller == 0) { |
| updateLayout (handle); |
| scroller = OS.FrameworkTemplate_FindName (template, name, handle); |
| } |
| OS.GCHandle_Free (name); |
| OS.GCHandle_Free (template); |
| if (scroller == 0) return 0; |
| double vertOffset = OS.ScrollViewer_VerticalOffset (scroller); |
| OS.GCHandle_Free (scroller); |
| return (int) vertOffset; |
| } |
| |
| void HandlePreviewKeyDown (int sender, int e) { |
| super.HandlePreviewKeyDown (sender, e); |
| if (!checkEvent (e)) return; |
| if ((style & SWT.SINGLE) != 0) { |
| int key = OS.KeyEventArgs_Key (e); |
| if (key == OS.Key_Return) postEvent (SWT.DefaultSelection); |
| } |
| } |
| |
| void HandlePreviewExecutedRoutedEvent (int sender, int e) { |
| if (!checkEvent (e)) return; |
| int command = OS.ExecutedRoutedEventArgs_Command (e); |
| boolean doVerify = false; |
| String input = null; |
| int paste = OS.ApplicationCommands_Paste (); |
| int cut = OS.ApplicationCommands_Cut (); |
| int redo = OS.ApplicationCommands_Redo (); |
| int undo = OS.ApplicationCommands_Undo (); |
| int backspace = OS.EditingCommands_Backspace (); |
| int delete = OS.EditingCommands_Delete (); |
| int deleteNext = OS.EditingCommands_DeleteNextWord (); |
| int deletePrevious = OS.EditingCommands_DeletePreviousWord (); |
| if (OS.Object_Equals (command, paste)) { |
| doVerify = true; |
| int clipboardText = OS.Clipboard_GetText (); |
| input = createJavaString(clipboardText); |
| OS.GCHandle_Free(clipboardText); |
| } else if (OS.Object_Equals (command, cut)){ |
| doVerify = true; |
| input = getSelectionText (); |
| } else if (OS.Object_Equals(command, redo)) { |
| //FIXME |
| //doVerify = true; |
| OS.ExecutedRoutedEventArgs_Handled (e, true); |
| } else if (OS.Object_Equals(command, undo)) { |
| //FIXME |
| //doVerify = true; |
| OS.ExecutedRoutedEventArgs_Handled (e, true); |
| } else if (OS.Object_Equals (command, backspace)) { |
| doVerify = true; |
| input = ""; |
| } else if (OS.Object_Equals (command, delete)) { |
| doVerify = true; |
| input = ""; |
| } else if (OS.Object_Equals(command, deleteNext)) { |
| //FIXME |
| //doVerify = true; |
| OS.ExecutedRoutedEventArgs_Handled (e, true); |
| } else if (OS.Object_Equals(command, deletePrevious)) { |
| //FIXME |
| //doVerify = true; |
| OS.ExecutedRoutedEventArgs_Handled (e, true); |
| } |
| OS.GCHandle_Free (paste); |
| OS.GCHandle_Free (cut); |
| OS.GCHandle_Free (redo); |
| OS.GCHandle_Free (undo); |
| OS.GCHandle_Free (backspace); |
| OS.GCHandle_Free (delete); |
| OS.GCHandle_Free (deleteNext); |
| OS.GCHandle_Free (deletePrevious); |
| OS.GCHandle_Free (command); |
| /* |
| * FIXME - should do this first, but for now we want to swallow |
| * all Redo, Undo, DeleteNextWord and DeletePreviousWord to |
| * prevent those from changing the TextBox w/o Verify events |
| */ |
| if (!hooks (SWT.Verify)) return; |
| if (!doVerify) return; |
| int start = OS.TextBox_SelectionStart (handle); |
| int end = start + OS.TextBox_SelectionLength (handle); |
| String text = verifyText (input, start, end, true); |
| if (text != null && !text.equals (input)) { |
| int strPtr = createDotNetString (text, false); |
| OS.TextBox_SelectedText (handle, strPtr); |
| OS.GCHandle_Free (strPtr); |
| start = OS.TextBox_SelectionStart (handle); |
| int length = OS.TextBox_SelectionLength (handle); |
| OS.TextBox_Select (handle, start+length, 0); |
| OS.TextBox_SelectionLength (handle, 0); |
| text = null; |
| } |
| if (text == null) OS.ExecutedRoutedEventArgs_Handled (e, true); |
| } |
| |
| void HandlePreviewTextInput (int sender, int e) { |
| super.HandlePreviewTextInput (sender, e); |
| if (!checkEvent (e)) return; |
| if ((style & SWT.PASSWORD) != 0) return; |
| int textPtr = OS.TextCompositionEventArgs_Text (e); |
| String input = createJavaString(textPtr); |
| OS.GCHandle_Free (textPtr); |
| int start = OS.TextBox_SelectionStart (handle); |
| int end = start + OS.TextBox_SelectionLength (handle); |
| String text = verifyText (input, start, end, true); |
| if (text != null && !text.equals (input)) { |
| textPtr = createDotNetString (text, false); |
| OS.TextBox_SelectedText (handle, textPtr); |
| OS.GCHandle_Free (textPtr); |
| start = OS.TextBox_SelectionStart (handle); |
| int length = OS.TextBox_SelectionLength (handle); |
| OS.TextBox_Select (handle, start+length, 0); |
| OS.TextBox_SelectionLength (handle, 0); |
| text = null; |
| } |
| if (text == null) OS.TextCompositionEventArgs_Handled (e, true); |
| } |
| |
| void HandleTextChanged (int sender, int e) { |
| if (!checkEvent (e)) return; |
| sendEvent (SWT.Modify); |
| } |
| |
| void hookEvents () { |
| super.hookEvents(); |
| if ((style & SWT.PASSWORD) != 0) { |
| int handler = OS.gcnew_RoutedEventHandler (jniRef, "HandleTextChanged"); |
| if (handler == 0) error (SWT.ERROR_NO_HANDLES); |
| OS.PasswordBox_PasswordChanged (handle, handler); |
| OS.GCHandle_Free(handler); |
| return; |
| } |
| |
| int handler = OS.gcnew_ExecutedRoutedEventHandler (jniRef, "HandlePreviewExecutedRoutedEvent"); |
| if (handler == 0) error (SWT.ERROR_NO_HANDLES); |
| OS.CommandManager_AddPreviewExecutedHandler (handle, handler); |
| OS.GCHandle_Free (handler); |
| handler = OS.gcnew_TextChangedEventHandler (jniRef, "HandleTextChanged"); |
| if (handler == 0) error (SWT.ERROR_NO_HANDLES); |
| OS.TextBoxBase_TextChanged (handle, handler); |
| OS.GCHandle_Free (handler); |
| } |
| |
| /** |
| * Inserts a string. |
| * <p> |
| * The old selection is replaced with the new text. |
| * </p> |
| * |
| * @param string the string |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is <code>null</code></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 insert (String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if ((style & SWT.PASSWORD) != 0) return; |
| if (hooks (SWT.Verify) || filters (SWT.Verify)) { |
| int start = OS.TextBox_SelectionStart (handle); |
| string = verifyText (string, start, start, false); |
| if (string == null) return; |
| } |
| int strPtr = createDotNetString (string, false); |
| OS.TextBox_SelectionLength (handle, 0); |
| OS.TextBox_SelectedText (handle, strPtr); |
| OS.GCHandle_Free (strPtr); |
| int end = OS.TextBox_SelectionStart (handle) + OS.TextBox_SelectionLength (handle); |
| OS.TextBox_Select (handle, end, 0); |
| } |
| |
| /** |
| * Pastes text from clipboard. |
| * <p> |
| * The selected text is deleted from the widget |
| * and new text inserted from the clipboard. |
| * </p> |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void paste () { |
| checkWidget (); |
| if ((style & SWT.PASSWORD) != 0) { |
| OS.PasswordBox_Paste (handle); |
| return; |
| } |
| OS.TextBoxBase_Paste (handle); |
| } |
| |
| /** |
| * 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 by the user. |
| * |
| * @param listener the listener which should no longer be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see SelectionListener |
| * @see #addSelectionListener |
| */ |
| public void removeSelectionListener (SelectionListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Selection, listener); |
| eventTable.unhook (SWT.DefaultSelection,listener); |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the control is verified. |
| * |
| * @param listener the listener which should no longer be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see VerifyListener |
| * @see #addVerifyListener |
| */ |
| 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.PASSWORD) != 0) return; |
| OS.TextBoxBase_SelectAll (handle); |
| } |
| |
| /** |
| * 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><p> |
| * Note: This operation is a hint and is not supported on |
| * platforms that do not have this concept. |
| * </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 (); |
| this.doubleClick = doubleClick; |
| } |
| |
| /** |
| * 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, |
| * or if the platform does not allow modification |
| * of the echo character, 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.PASSWORD) == 0) return; |
| OS.PasswordBox_PasswordChar (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.PASSWORD) != 0) return; |
| OS.TextBoxBase_IsReadOnly (handle, !editable); |
| } |
| |
| void setFont (int font, double size) { |
| super.setFont (font, size); |
| //FIXME |
| // setTabStops (tabs); |
| } |
| |
| /** |
| * Sets the widget message. The message text is displayed |
| * as a hint for the user, indicating the purpose of the field. |
| * <p> |
| * Typically this is used in conjunction with <code>SWT.SEARCH</code>. |
| * </p> |
| * |
| * @param message the new message |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the message 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> |
| * |
| * @since 3.3 |
| */ |
| public void setMessage (String message) { |
| checkWidget (); |
| if (message == null) error (SWT.ERROR_NULL_ARGUMENT); |
| //TODO |
| } |
| |
| /** |
| * Sets the orientation of the receiver, which must be one |
| * of the constants <code>SWT.LEFT_TO_RIGHT</code> or <code>SWT.RIGHT_TO_LEFT</code>. |
| * <p> |
| * Note: This operation is a hint and is not supported on |
| * platforms that do not have this concept. |
| * </p> |
| * |
| * @param orientation new orientation style |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 2.1.2 |
| */ |
| public void setOrientation (int orientation) { |
| checkWidget(); |
| int flags = SWT.RIGHT_TO_LEFT | SWT.LEFT_TO_RIGHT; |
| if ((orientation & flags) == 0 || (orientation & flags) == flags) return; |
| style &= ~flags; |
| style |= orientation & flags; |
| //FIXME FrameworkElement.FlowDirection ?? |
| } |
| |
| /** |
| * 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.PASSWORD) != 0) return; |
| OS.TextBox_CaretIndex (handle, start); |
| } |
| |
| /** |
| * Sets the selection to the range specified |
| * by the given start and end indices. |
| * <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.PASSWORD) != 0) return; |
| int first = Math.max (Math.min (start, end), 0); |
| int last = Math.min (Math.max (start, end), getCharCount ()); |
| OS.TextBox_Select (handle, first, last-first); |
| } |
| |
| /** |
| * Sets the selection to the range specified |
| * by the given point, where the x coordinate |
| * represents the start index and the y coordinate |
| * represents the end index. |
| * <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; |
| //FIXME - no equivalent API in WPF TextBox |
| // setTabStops (this.tabs = tabs); |
| } |
| |
| /** |
| * 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 string the new text |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void setText (String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (hooks (SWT.Verify) || filters (SWT.Verify)) { |
| string = verifyText (string, 0, getCharCount (), false); |
| if (string == null) return; |
| } |
| int ptr = createDotNetString (string, false); |
| if ((style & SWT.PASSWORD) != 0) { |
| OS.PasswordBox_Password (handle, ptr); |
| } else { |
| OS.TextBox_Text (handle, ptr); |
| } |
| OS.GCHandle_Free (ptr); |
| } |
| |
| /** |
| * Sets the contents of the receiver to the characters in the array. If the receiver |
| * has style <code>SWT.SINGLE</code> and the argument contains multiple lines of text |
| * then the result of this operation is undefined and may vary between platforms. |
| * |
| * @param text a character array that contains the new text |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the array is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see #getTextChars() |
| * |
| * @since 3.7 |
| */ |
| public void setTextChars (char [] text) { |
| checkWidget(); |
| } |
| |
| /** |
| * 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>. |
| * Specifying a limit value larger than <code>Text.LIMIT</code> sets the |
| * receiver's limit to <code>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> |
| * |
| * @see #LIMIT |
| */ |
| public void setTextLimit (int limit) { |
| checkWidget (); |
| if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO); |
| if (limit < 0) limit = LIMIT; |
| limit = Math.min (limit, LIMIT); |
| if ((style & SWT.PASSWORD) != 0) { |
| OS.PasswordBox_MaxLength (handle, limit); |
| } else { |
| OS.TextBox_MaxLength (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; |
| if ((style & SWT.PASSWORD) != 0) return; |
| int count = OS.TextBox_LineCount (handle); |
| if (count == -1) { |
| updateLayout (handle); |
| count = OS.TextBox_LineCount (handle); |
| } |
| index = Math.max(0, Math.min (index, count-1)); |
| int family = OS.Control_FontFamily (handle); |
| double lineSpacing = OS.FontFamily_LineSpacing (family); |
| OS.GCHandle_Free (family); |
| double size = OS.Control_FontSize (handle); |
| double lineHeight = lineSpacing * size; |
| int name = createDotNetString ("PART_ContentHost", false); |
| int template = OS.Control_Template (handle); |
| int scroller = OS.FrameworkTemplate_FindName (template, name, handle); |
| OS.GCHandle_Free (name); |
| OS.GCHandle_Free (template); |
| if (scroller == 0) return; |
| double vertOffset = index*lineHeight; |
| OS.ScrollViewer_ScrollToVerticalOffset (scroller, vertOffset); |
| OS.GCHandle_Free (scroller); |
| updateLayout(handle); |
| } |
| |
| /** |
| * 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 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.PASSWORD) != 0) return; |
| double offset = OS.TextBoxBase_VerticalOffset (handle); |
| OS.TextBoxBase_ScrollToVerticalOffset (handle, offset); |
| } |
| |
| int traversalCode (int key, int 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.Key_Tab && event != 0) { |
| int keyboardDevice = OS.KeyboardEventArgs_KeyboardDevice(event); |
| int modifiers = OS.KeyboardDevice_Modifiers(keyboardDevice); |
| OS.GCHandle_Free(keyboardDevice); |
| boolean next = (modifiers & OS.ModifierKeys_Shift) == 0; |
| if (next && (modifiers & OS.ModifierKeys_Control) == 0) { |
| bits &= ~(SWT.TRAVERSE_TAB_NEXT | SWT.TRAVERSE_TAB_PREVIOUS); |
| } |
| } |
| } |
| return bits; |
| } |
| |
| String verifyText (String string, int start, int end, boolean keyEvent) { |
| Event event = new Event (); |
| event.text = string; |
| event.start = start; |
| event.end = end; |
| if (keyEvent && string.length () == 1) { |
| event.character = string.charAt (0); |
| setInputState (event, SWT.KeyDown, 0, 0); |
| } |
| /* |
| * It is possible (but unlikely), that application |
| * code could have disposed the widget in the verify |
| * event. If this happens, answer null to cancel |
| * the operation. |
| */ |
| sendEvent (SWT.Verify, event); |
| if (!event.doit || isDisposed ()) return null; |
| return event.text; |
| } |
| |
| } |