| /******************************************************************************* |
| * Copyright (c) 2000, 2007 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.SWT; |
| import org.eclipse.swt.SWTException; |
| import org.eclipse.swt.events.ModifyListener; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.events.SelectionListener; |
| import org.eclipse.swt.events.VerifyListener; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.swt.internal.wpf.OS; |
| |
| /** |
| * Instances of this class are controls that allow the user |
| * to choose an item from a list of items, or optionally |
| * enter a new value by typing it into an editable text |
| * field. Often, <code>Combo</code>s are used in the same place |
| * where a single selection <code>List</code> widget could |
| * be used but space is limited. A <code>Combo</code> takes |
| * less space than a <code>List</code> widget and shows |
| * similar information. |
| * <p> |
| * Note: Since <code>Combo</code>s can contain both a list |
| * and an editable text field, it is possible to confuse methods |
| * which access one versus the other (compare for example, |
| * <code>clearSelection()</code> and <code>deselectAll()</code>). |
| * The API documentation is careful to indicate either "the |
| * receiver's list" or the "the receiver's text field" to |
| * distinguish between the two cases. |
| * </p><p> |
| * Note that although this class is a subclass of <code>Composite</code>, |
| * it does not make sense to add children to it, or set a layout on it. |
| * </p> |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>DROP_DOWN, READ_ONLY, SIMPLE</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>DefaultSelection, Modify, Selection, Verify</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the styles DROP_DOWN and SIMPLE may be specified. |
| * </p><p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| * |
| * @see List |
| */ |
| |
| public class Combo extends Composite { |
| int textHandle; |
| boolean ignoreSelection; |
| |
| /** |
| * the operating system limit for the number of characters |
| * that the text field in an instance of this class can hold |
| */ |
| public static final int LIMIT; |
| |
| /* |
| * 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; |
| } |
| |
| /** |
| * 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#DROP_DOWN |
| * @see SWT#READ_ONLY |
| * @see SWT#SIMPLE |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public Combo (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| /* This code is intentionally commented */ |
| //if ((style & SWT.H_SCROLL) != 0) this.style |= SWT.H_SCROLL; |
| this.style |= SWT.H_SCROLL; |
| } |
| |
| Control [] _getChildren () { |
| return new Control [0]; |
| } |
| |
| /** |
| * Adds the argument to the end of the receiver's list. |
| * |
| * @param string the new item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see #add(String,int) |
| */ |
| public void add (String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| int itemHandle = OS.gcnew_ComboBoxItem (); |
| int strPtr = createDotNetString (string, false); |
| OS.ContentControl_Content (itemHandle, strPtr); |
| OS.GCHandle_Free (strPtr); |
| int itemCollection = OS.ItemsControl_Items (handle); |
| OS.ItemCollection_Add (itemCollection, itemHandle); |
| OS.GCHandle_Free (itemCollection); |
| OS.GCHandle_Free (itemHandle); |
| } |
| |
| /** |
| * Adds the argument to the receiver's list at the given |
| * zero-relative index. |
| * <p> |
| * Note: To add an item at the end of the list, use the |
| * result of calling <code>getItemCount()</code> as the |
| * index or use <code>add(String)</code>. |
| * </p> |
| * |
| * @param string the new item |
| * @param index the index for the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list (inclusive)</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see #add(String) |
| */ |
| public void add (String string, int index) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| int itemHandle = OS.gcnew_ComboBoxItem (); |
| int strPtr = createDotNetString (string, false); |
| OS.ContentControl_Content (itemHandle, strPtr); |
| OS.GCHandle_Free (strPtr); |
| int itemCollection = OS.ItemsControl_Items (handle); |
| OS.ItemCollection_Insert (itemCollection, index, itemHandle); |
| OS.GCHandle_Free (itemCollection); |
| OS.GCHandle_Free (itemHandle); |
| } |
| |
| /** |
| * 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 receiver's selection changes, by sending |
| * it one of the messages defined in the <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * <code>widgetSelected</code> is called when the combo's list selection changes. |
| * <code>widgetDefaultSelected</code> is typically called when ENTER is pressed the combo's text area. |
| * </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 |
| * |
| * @since 3.1 |
| */ |
| public void addVerifyListener (VerifyListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener (listener); |
| addListener (SWT.Verify, typedListener); |
| } |
| |
| void addWidget () { |
| super.addWidget (); |
| if ((style & SWT.READ_ONLY) == 0) { |
| OS.UIElement_UpdateLayout (handle); |
| int name = createDotNetString ("PART_EditableTextBox", false); |
| int template = OS.Control_Template (handle); |
| textHandle = OS.FrameworkTemplate_FindName (template, name, handle); |
| OS.GCHandle_Free (name); |
| OS.GCHandle_Free (template); |
| } |
| } |
| |
| int backgroundProperty () { |
| return OS.Control_BackgroundProperty (); |
| } |
| |
| protected void checkSubclass () { |
| if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS); |
| } |
| |
| static int checkStyle (int style) { |
| /* |
| * Feature in Windows. It is not possible to create |
| * a combo box that has a border using Windows style |
| * bits. All combo boxes draw their own border and |
| * do not use the standard Windows border styles. |
| * Therefore, no matter what style bits are specified, |
| * clear the BORDER bits so that the SWT style will |
| * match the Windows widget. |
| * |
| * The Windows behavior is currently implemented on |
| * all platforms. |
| */ |
| style &= ~SWT.BORDER; |
| |
| /* |
| * Even though it is legal to create this widget |
| * with scroll bars, they serve no useful purpose |
| * because they do not automatically scroll the |
| * widget's client area. The fix is to clear |
| * the SWT style. |
| */ |
| style &= ~(SWT.H_SCROLL | SWT.V_SCROLL); |
| style = checkBits (style, SWT.DROP_DOWN, SWT.SIMPLE, 0, 0, 0, 0); |
| if ((style & SWT.SIMPLE) != 0) return style & ~SWT.READ_ONLY; |
| return style; |
| } |
| |
| /** |
| * Sets the selection in the receiver's text field to an empty |
| * selection starting just before the first character. If the |
| * text field is editable, this has the effect of placing the |
| * i-beam at the start of the text. |
| * <p> |
| * Note: To clear the selected items in the receiver's list, |
| * use <code>deselectAll()</code>. |
| * </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> |
| * |
| * @see #deselectAll |
| */ |
| public void clearSelection () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) == 0) { |
| OS.TextBox_Select (textHandle, 0, 0); |
| } |
| } |
| |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget (); |
| ignoreSelection = true; |
| int itemCount = getItemCount(); |
| int text = 0; |
| if (textHandle != 0) { |
| text = OS.TextBox_Text (textHandle); |
| } |
| int selectedIndex = OS.Selector_SelectedIndex (handle); |
| int width = wHint, height = hHint; |
| if (wHint == SWT.DEFAULT) width = 0x7FFFFFFF; |
| if (hHint == SWT.DEFAULT) height = 0x7FFFFFFF; |
| width = Math.max (0, width); |
| height = Math.max (0, height); |
| int availSize = OS.gcnew_Size ((double) width, (double) height); |
| if (availSize == 0) error (SWT.ERROR_NO_HANDLES); |
| double requestWidth = OS.FrameworkElement_Width (handle); |
| double requestHeight = OS.FrameworkElement_Height (handle); |
| int widthDP = OS.FrameworkElement_WidthProperty (); |
| int heightDP = OS.FrameworkElement_HeightProperty (); |
| OS.DependencyObject_ClearValue (handle, widthDP); |
| OS.DependencyObject_ClearValue (handle, heightDP); |
| OS.UIElement_Measure (handle, availSize); |
| int size = OS.UIElement_DesiredSize (handle); |
| width = (int) OS.Size_Width (size); |
| height = (int) OS.Size_Height (size); |
| OS.GCHandle_Free (size); |
| for (int i = 0; i < itemCount; i++) { |
| OS.Selector_SelectedIndex (handle, i); |
| OS.UIElement_UpdateLayout (handle); |
| OS.UIElement_Measure (handle, availSize); |
| size = OS.UIElement_DesiredSize (handle); |
| width = Math.max (width, (int) OS.Size_Width (size)); |
| height = Math.max (height, (int) OS.Size_Height (size)); |
| OS.GCHandle_Free (size); |
| } |
| OS.GCHandle_Free (availSize); |
| OS.FrameworkElement_Width (handle, requestWidth); |
| OS.FrameworkElement_Height (handle, requestHeight); |
| OS.Selector_SelectedIndex (handle, selectedIndex); |
| if (textHandle != 0) { |
| OS.TextBox_Text (textHandle, text); |
| OS.GCHandle_Free (text); |
| } |
| OS.GCHandle_Free (widthDP); |
| OS.GCHandle_Free (heightDP); |
| if (wHint != SWT.DEFAULT) width = wHint; |
| if (hHint != SWT.DEFAULT) height = hHint; |
| ignoreSelection = false; |
| return new Point (width, height); |
| } |
| |
| /** |
| * Copies the selected text. |
| * <p> |
| * The current selection is copied to the clipboard. |
| * </p> |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 2.1 |
| */ |
| public void copy () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) return; //TODO |
| OS.TextBoxBase_Copy (textHandle); |
| } |
| |
| void createHandle () { |
| handle = OS.gcnew_ComboBox (); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| if ((style & SWT.READ_ONLY) == 0) { |
| OS.ComboBox_IsEditable (handle, true); |
| } |
| } |
| |
| /** |
| * 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> |
| * |
| * @since 2.1 |
| */ |
| public void cut () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) return; |
| OS.TextBoxBase_Cut (textHandle); |
| } |
| |
| /** |
| * Deselects the item at the given zero-relative index in the receiver's |
| * list. If the item at the index was already deselected, it remains |
| * deselected. Indices that are out of range are ignored. |
| * |
| * @param index the index of the item to deselect |
| * |
| * @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 deselect (int index) { |
| checkWidget (); |
| ignoreSelection = true; |
| OS.Selector_SelectedIndex (handle, -1); |
| ignoreSelection = false; |
| // FIXME: May need to send modify event here. |
| // if ((style & SWT.READ_ONLY) == 0) { |
| // sendEvent (SWT.Modify); |
| // } |
| } |
| |
| /** |
| * Deselects all selected items in the receiver's list. |
| * <p> |
| * Note: To clear the selection in the receiver's text field, |
| * use <code>clearSelection()</code>. |
| * </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> |
| * |
| * @see #clearSelection |
| */ |
| public void deselectAll () { |
| checkWidget (); |
| ignoreSelection = true; |
| OS.Selector_SelectedIndex (handle, -1); |
| ignoreSelection = false; |
| } |
| |
| /** |
| * Returns the item at the given, zero-relative index in the |
| * receiver's list. Throws an exception if the index is out |
| * of range. |
| * |
| * @param index the index of the item to return |
| * @return the item at the given index |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public String getItem (int index) { |
| checkWidget (); |
| int count = getItemCount (); |
| if (index < 0 || index >= count) error (SWT.ERROR_INVALID_RANGE); |
| int itemCollection = OS.ItemsControl_Items (handle); |
| int comboBoxItem = OS.ItemCollection_GetItemAt (itemCollection, index); |
| OS.GCHandle_Free (itemCollection); |
| int content = OS.ContentControl_Content (comboBoxItem); |
| String string = createJavaString(content); |
| OS.GCHandle_Free (comboBoxItem); |
| OS.GCHandle_Free (content); |
| return string; |
| } |
| |
| /** |
| * Returns the number of items contained in the receiver's list. |
| * |
| * @return the number of items |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int getItemCount () { |
| checkWidget (); |
| int itemCollection = OS.ItemsControl_Items (handle); |
| int count = OS.ItemCollection_Count (itemCollection); |
| OS.GCHandle_Free (itemCollection); |
| return count; |
| } |
| |
| /** |
| * Returns the height of the area which would be used to |
| * display <em>one</em> of the items in the receiver's list. |
| * |
| * @return the height of one item |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int getItemHeight () { |
| checkWidget (); |
| //todo |
| int result = 0; |
| // if (result == OS.CB_ERR) error (SWT.ERROR_CANNOT_GET_ITEM_HEIGHT); |
| return result; |
| } |
| |
| /** |
| * Returns a (possibly empty) array of <code>String</code>s which are |
| * the items in the receiver's list. |
| * <p> |
| * Note: This is not the actual structure used by the receiver |
| * to maintain its list of items, so modifying the array will |
| * not affect the receiver. |
| * </p> |
| * |
| * @return the items in the receiver's list |
| * |
| * @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 [] getItems () { |
| checkWidget (); |
| int count = getItemCount (); |
| String [] result = new String [count]; |
| for (int i=0; i<count; i++) result [i] = getItem (i); |
| return result; |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver's list is visible, |
| * and <code>false</code> otherwise. |
| * <p> |
| * If one of the receiver's ancestors is not visible or some |
| * other condition makes the receiver not visible, this method |
| * may still indicate that it is considered visible even though |
| * it may not actually be showing. |
| * </p> |
| * |
| * @return the receiver's list's visibility 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> |
| * |
| * @since 3.3 |
| */ |
| /*public*/ boolean getListVisible () { |
| checkWidget (); |
| return OS.ComboBox_IsDropDownOpen (handle); |
| } |
| |
| String getNameText () { |
| return getText (); |
| } |
| |
| /** |
| * Returns the orientation of the receiver. |
| * |
| * @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 selection |
| * in the receiver's text field, 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.READ_ONLY) != 0) return new Point (0,0); |
| int start = OS.TextBox_SelectionStart (textHandle); |
| int length = OS.TextBox_SelectionLength (textHandle); |
| return new Point (start, start + length); |
| } |
| |
| /** |
| * Returns the zero-relative index of the item which is currently |
| * selected in the receiver's list, or -1 if no item is selected. |
| * |
| * @return the index of the selected item |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int getSelectionIndex () { |
| checkWidget (); |
| return OS.Selector_SelectedIndex (handle); |
| } |
| |
| /** |
| * Returns a string containing a copy of the contents of the |
| * receiver's text field, or an empty string if there are no |
| * contents. |
| * |
| * @return the receiver'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> |
| */ |
| public String getText () { |
| checkWidget (); |
| String text; |
| if ((style & SWT.READ_ONLY) != 0) { |
| int item = OS.ComboBox_SelectionBoxItem (handle); |
| text = createJavaString (item); |
| OS.GCHandle_Free (item); |
| } else { |
| int content = OS.TextBox_Text (textHandle); |
| text = createJavaString (content); |
| OS.GCHandle_Free (content); |
| } |
| return text; |
| } |
| |
| /** |
| * Returns the height of the receivers's text field. |
| * |
| * @return the text height |
| * |
| * @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 getTextHeight () { |
| checkWidget (); |
| //FIXME |
| return 0; |
| } |
| |
| /** |
| * Returns the maximum number of characters that the receiver's |
| * text field is capable of holding. If this has not been changed |
| * by <code>setTextLimit()</code>, it will be the constant |
| * <code>Combo.LIMIT</code>. |
| * |
| * @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 (); |
| //FIXME |
| return LIMIT; |
| } |
| |
| /** |
| * Gets the number of items that are visible in the drop |
| * down portion of the receiver's list. |
| * <p> |
| * Note: This operation is a hint and is not supported on |
| * platforms that do not have this concept. |
| * </p> |
| * |
| * @return the number of items that are visible |
| * |
| * @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 3.0 |
| */ |
| public int getVisibleItemCount () { |
| checkWidget (); |
| //FIXME |
| return 0; |
| } |
| |
| void HandleSelectionChanged (int sender, int e) { |
| if (!checkEvent (e)) return; |
| if (!ignoreSelection) postEvent (SWT.Selection); |
| } |
| |
| void HandlePreviewExecutedRoutedEvent (int sender, int e) { |
| if (!checkEvent (e)) return; |
| int command = OS.ExecutedRoutedEventArgs_Command (e); |
| boolean doVerify = false; |
| String input = null; |
| if (OS.Object_Equals (command, OS.ApplicationCommands_Paste)) { |
| doVerify = true; |
| int clipboardText = OS.Clipboard_GetText (); |
| input = createJavaString(clipboardText); |
| OS.GCHandle_Free(clipboardText); |
| } else if (OS.Object_Equals (command, OS.ApplicationCommands_Cut)){ |
| doVerify = true; |
| int content = OS.TextBox_SelectedText (textHandle); |
| input = createJavaString (content); |
| OS.GCHandle_Free (content); |
| } else if (OS.Object_Equals(command, OS.ApplicationCommands_Redo)) { |
| //FIXME |
| //doVerify = true; |
| OS.ExecutedRoutedEventArgs_Handled (e, true); |
| } else if (OS.Object_Equals(command, OS.ApplicationCommands_Undo)) { |
| //FIXME |
| //doVerify = true; |
| OS.ExecutedRoutedEventArgs_Handled (e, true); |
| } else if (OS.Object_Equals (command, OS.EditingCommands_Backspace)) { |
| doVerify = true; |
| input = ""; |
| } else if (OS.Object_Equals (command, OS.EditingCommands_Delete)) { |
| doVerify = true; |
| input = ""; |
| } else if (OS.Object_Equals(command, OS.EditingCommands_DeleteNextWord)) { |
| //FIXME |
| //doVerify = true; |
| OS.ExecutedRoutedEventArgs_Handled (e, true); |
| } else if (OS.Object_Equals(command, OS.EditingCommands_DeletePreviousWord)) { |
| //FIXME |
| //doVerify = true; |
| OS.ExecutedRoutedEventArgs_Handled (e, true); |
| } |
| 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; |
| String text = verifyText (input); |
| if (text != null && !text.equals (input)) { |
| int strPtr = createDotNetString (text, false); |
| OS.TextBox_SelectedText (textHandle, strPtr); |
| OS.GCHandle_Free (strPtr); |
| int start = OS.TextBox_SelectionStart (textHandle); |
| int length = OS.TextBox_SelectionLength (textHandle); |
| OS.TextBox_Select (textHandle, start+length, 0); |
| OS.TextBox_SelectionLength (textHandle, 0); |
| text = null; |
| } |
| if (text == null) OS.ExecutedRoutedEventArgs_Handled (e, true); |
| } |
| |
| void HandlePreviewTextInput (int sender, int e) { |
| if (!checkEvent (e)) return; |
| int textPtr = OS.TextCompositionEventArgs_Text (e); |
| String input = createJavaString(textPtr); |
| OS.GCHandle_Free (textPtr); |
| String text = verifyText (input); |
| if (text != null && !text.equals (input)) { |
| textPtr = createDotNetString (text, false); |
| OS.TextBox_SelectedText (textHandle, textPtr); |
| OS.GCHandle_Free (textPtr); |
| int start = OS.TextBox_SelectionStart (textHandle); |
| int length = OS.TextBox_SelectionLength (textHandle); |
| OS.TextBox_Select (textHandle, start+length, 0); |
| OS.TextBox_SelectionLength (textHandle, 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 (); |
| int handler = OS.gcnew_SelectionChangedEventHandler (jniRef, "HandleSelectionChanged"); |
| OS.Selector_SelectionChanged (handle, handler); |
| OS.GCHandle_Free (handler); |
| if (textHandle != 0) { |
| handler = OS.gcnew_TextCompositionEventHandler (jniRef, "HandlePreviewTextInput"); |
| if (handler == 0) error (SWT.ERROR_NO_HANDLES); |
| OS.UIElement_PreviewTextInput (textHandle, handler); |
| OS.GCHandle_Free (handler); |
| handler = OS.gcnew_ExecutedRoutedEventHandler (jniRef, "HandlePreviewExecutedRoutedEvent"); |
| if (handler == 0) error (SWT.ERROR_NO_HANDLES); |
| OS.CommandManager_AddPreviewExecutedHandler (textHandle, handler); |
| OS.GCHandle_Free (handler); |
| handler = OS.gcnew_TextChangedEventHandler (jniRef, "HandleTextChanged"); |
| if (handler == 0) error (SWT.ERROR_NO_HANDLES); |
| OS.TextBoxBase_TextChanged (textHandle, handler); |
| OS.GCHandle_Free (handler); |
| } |
| } |
| |
| /** |
| * Searches the receiver's list starting at the first item |
| * (index 0) until an item is found that is equal to the |
| * argument, and returns the index of that item. If no item |
| * is found, returns -1. |
| * |
| * @param string the search item |
| * @return the index of the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int indexOf (String string) { |
| return indexOf (string, 0); |
| } |
| |
| /** |
| * Searches the receiver's list starting at the given, |
| * zero-relative index until an item is found that is equal |
| * to the argument, and returns the index of that item. If |
| * no item is found or the starting index is out of range, |
| * returns -1. |
| * |
| * @param string the search item |
| * @param start the zero-relative index at which to begin the search |
| * @return the index of the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int indexOf (String string, int start) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| int count = getItemCount (); |
| if (start >= count) return -1; |
| start = Math.max (start, 0); |
| int strPtr = createDotNetString (string, false); |
| int itemCollection = OS.ItemsControl_Items (handle); |
| int index = -1; |
| while (start < count && index == -1) { |
| int item = OS.ItemCollection_GetItemAt (itemCollection, start); |
| int itemContent = OS.ContentControl_Content (item); |
| OS.GCHandle_Free (item); |
| if (itemContent != 0 && OS.Object_Equals (itemContent, strPtr)) index = start; |
| OS.GCHandle_Free (itemContent); |
| start ++; |
| } |
| OS.GCHandle_Free (strPtr); |
| OS.GCHandle_Free (itemCollection); |
| return index; |
| } |
| |
| /** |
| * 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> |
| * |
| * @since 2.1 |
| */ |
| public void paste () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) return; |
| OS.TextBoxBase_Paste (textHandle); |
| } |
| |
| void releaseHandle () { |
| super.releaseHandle (); |
| if (textHandle != 0) OS.GCHandle_Free (textHandle); |
| textHandle = 0; |
| } |
| /** |
| * Removes the item from the receiver's list at the given |
| * zero-relative index. |
| * |
| * @param index the index for the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void remove (int index) { |
| checkWidget (); |
| if (index < 0 || index >= getItemCount ()) error (SWT.ERROR_INVALID_RANGE); |
| int itemCollection = OS.ItemsControl_Items(handle); |
| OS.ItemCollection_RemoveAt(itemCollection, index); |
| OS.GCHandle_Free(itemCollection); |
| } |
| |
| /** |
| * Removes the items from the receiver's list which are |
| * between the given zero-relative start and end |
| * indices (inclusive). |
| * |
| * @param start the start of the range |
| * @param end the end of the range |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_RANGE - if either the start or end are not between 0 and the number of elements in the list minus 1 (inclusive)</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void remove (int start, int end) { |
| checkWidget (); |
| int count = getItemCount (); |
| if (start < 0 || start >= count) error (SWT.ERROR_INVALID_RANGE); |
| if (end < 0 || end >= count) error (SWT.ERROR_INVALID_RANGE); |
| int itemCollection = OS.ItemsControl_Items(handle); |
| for (int i = end; i >= start; i--) { |
| OS.ItemCollection_RemoveAt(itemCollection, i); |
| } |
| OS.GCHandle_Free(itemCollection); |
| } |
| |
| /** |
| * Searches the receiver's list starting at the first item |
| * until an item is found that is equal to the argument, |
| * and removes that item from the list. |
| * |
| * @param string the item to remove |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the string is not found in the list</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 remove (String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| int index = indexOf (string, 0); |
| if (index == -1) error (SWT.ERROR_INVALID_ARGUMENT); |
| remove (index); |
| } |
| |
| /** |
| * Removes all of the items from the receiver's list and clear the |
| * contents of receiver's text field. |
| * <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 removeAll () { |
| checkWidget (); |
| int itemCollection = OS.ItemsControl_Items (handle); |
| OS.ItemCollection_Clear (itemCollection); |
| OS.GCHandle_Free (itemCollection); |
| } |
| |
| /** |
| * 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 receiver's selection changes. |
| * |
| * @param listener the listener which should no longer be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see SelectionListener |
| * @see #addSelectionListener |
| */ |
| public void removeSelectionListener (SelectionListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Selection, listener); |
| eventTable.unhook (SWT.DefaultSelection,listener); |
| } |
| |
| /** |
| * 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 |
| * |
| * @since 3.1 |
| */ |
| public void removeVerifyListener (VerifyListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Verify, listener); |
| } |
| |
| /** |
| * Selects the item at the given zero-relative index in the receiver's |
| * list. If the item at the index was already selected, it remains |
| * selected. Indices that are out of range are ignored. |
| * |
| * @param index the index of the item to select |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void select (int index) { |
| checkWidget (); |
| int itemCollection = OS.ItemsControl_Items(handle); |
| int count = OS.ItemCollection_Count(itemCollection); |
| OS.GCHandle_Free(itemCollection); |
| if (0 <= index && index < count) { |
| // int selection = OS.Selector_SelectedIndex (handle); |
| ignoreSelection = true; |
| OS.Selector_SelectedIndex(handle, index); |
| ignoreSelection = false; |
| // int code = OS.Selector_SelectedIndex(handle); |
| // if (code != -1 && code != selection) { |
| // sendEvent (SWT.Modify); |
| // } |
| } |
| } |
| |
| void setForegroundBrush (int brush) { |
| if (brush != 0) { |
| OS.Control_Foreground (handle, brush); |
| } else { |
| int property = OS.Control_ForegroundProperty (); |
| OS.DependencyObject_ClearValue (handle, property); |
| OS.GCHandle_Free (property); |
| } |
| } |
| |
| /** |
| * Sets the text of the item in the receiver's list at the given |
| * zero-relative index to the string argument. This is equivalent |
| * to removing the old item at the index, and then adding the new |
| * item at that index. |
| * |
| * @param index the index for the item |
| * @param string the new text for the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</li> |
| * <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 setItem (int index, String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (index < 0 || index >= getItemCount()) error (SWT.ERROR_INVALID_RANGE); |
| int itemCollection = OS.ItemsControl_Items(handle); |
| int item = OS.ItemCollection_GetItemAt(itemCollection, index); |
| OS.GCHandle_Free(itemCollection); |
| int strPtr = createDotNetString (string, false); |
| OS.ContentControl_Content(item, strPtr); |
| OS.GCHandle_Free(strPtr); |
| OS.GCHandle_Free(item); |
| } |
| |
| /** |
| * Sets the receiver's list to be the given array of items. |
| * |
| * @param items the array of items |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the items array is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if an item in the items 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> |
| */ |
| public void setItems (String [] items) { |
| checkWidget (); |
| if (items == null) error (SWT.ERROR_NULL_ARGUMENT); |
| for (int i=0; i<items.length; i++) { |
| if (items [i] == null) error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| int itemCollection = OS.ItemsControl_Items(handle); |
| OS.ItemCollection_Clear(itemCollection); |
| for (int i = 0; i < items.length; i++) { |
| int itemHandle = OS.gcnew_ComboBoxItem (); |
| int strPtr = createDotNetString (items [i], false); |
| OS.ContentControl_Content (itemHandle, strPtr); |
| OS.GCHandle_Free (strPtr); |
| OS.ItemCollection_Add (itemCollection, itemHandle); |
| OS.GCHandle_Free (itemHandle); |
| } |
| OS.GCHandle_Free(itemCollection); |
| } |
| |
| /** |
| * Marks the receiver's list as visible if the argument is <code>true</code>, |
| * and marks it invisible otherwise. |
| * <p> |
| * If one of the receiver's ancestors is not visible or some |
| * other condition makes the receiver not visible, marking |
| * it visible may not actually cause it to be displayed. |
| * </p> |
| * |
| * @param visible the new visibility 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> |
| * |
| * @since 3.3 |
| */ |
| /*public*/ void setListVisible (boolean visible) { |
| checkWidget (); |
| OS.ComboBox_IsDropDownOpen(handle, visible); |
| } |
| |
| /** |
| * 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> |
| * |
| * @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(); |
| //FIXME |
| } |
| |
| /** |
| * Sets the selection in the receiver's text field to the |
| * range specified by the argument whose x coordinate is the |
| * start of the selection and whose y coordinate is the end |
| * of the selection. |
| * |
| * @param selection a point representing the new selection start and end |
| * |
| * @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 ((style & SWT.READ_ONLY) != 0) return; |
| if (selection == null) error (SWT.ERROR_NULL_ARGUMENT); |
| int start = selection.x, length = selection.y - selection.x; |
| OS.TextBox_SelectionLength (textHandle, length); |
| OS.TextBox_SelectionStart (textHandle, start); |
| } |
| |
| /** |
| * Sets the contents of the receiver's text field to the |
| * given string. |
| * <p> |
| * Note: The text field in a <code>Combo</code> is typically |
| * only capable of displaying a single line of text. Thus, |
| * setting the text to a string containing line breaks or |
| * other special characters will probably cause it to |
| * display incorrectly. |
| * </p> |
| * |
| * @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 ((style & SWT.READ_ONLY) != 0) { |
| int index = indexOf (string); |
| if (index != -1) select (index); |
| return; |
| } |
| int strPtr = createDotNetString (string, false); |
| OS.TextBox_Text (textHandle, strPtr); |
| OS.GCHandle_Free (strPtr); |
| } |
| |
| /** |
| * Sets the maximum number of characters that the receiver's |
| * text field is capable of holding to be the argument. |
| * <p> |
| * To reset this value to the default, use <code>setTextLimit(Combo.LIMIT)</code>. |
| * Specifying a limit value larger than <code>Combo.LIMIT</code> sets the |
| * receiver's limit to <code>Combo.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); |
| //FIXME |
| } |
| |
| /** |
| * Sets the number of items that are visible in the drop |
| * down portion of the receiver's list. |
| * <p> |
| * Note: This operation is a hint and is not supported on |
| * platforms that do not have this concept. |
| * </p> |
| * |
| * @param count the new number of items to be visible |
| * |
| * @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 3.0 |
| */ |
| public void setVisibleItemCount (int count) { |
| checkWidget (); |
| if (count < 0) return; |
| //FIXME |
| } |
| |
| String verifyText (String text) { |
| int start = OS.TextBox_SelectionStart (textHandle); |
| int length = OS.TextBox_SelectionLength (textHandle); |
| Event event = new Event (); |
| event.text = text; |
| event.start = start; |
| /* |
| * FIXME: end can be greater than start+length+1 |
| * when Deleting special characters. |
| * Note that backspace deletes one character at |
| * a time. |
| */ |
| event.end = start+length+1; |
| sendEvent (SWT.Verify, event); |
| if (!event.doit) return null; |
| return event.text; |
| } |
| |
| } |