/******************************************************************************* | |
* Copyright (c) 2000, 2005 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 | |
* Tom Seidel - enhancements for image-handling | |
*******************************************************************************/ | |
package org.eclipse.cdt.internal.ui; | |
import java.util.Arrays; | |
import org.eclipse.swt.SWT; | |
import org.eclipse.swt.SWTException; | |
import org.eclipse.swt.accessibility.ACC; | |
import org.eclipse.swt.accessibility.AccessibleAdapter; | |
import org.eclipse.swt.accessibility.AccessibleControlAdapter; | |
import org.eclipse.swt.accessibility.AccessibleControlEvent; | |
import org.eclipse.swt.accessibility.AccessibleEvent; | |
import org.eclipse.swt.accessibility.AccessibleTextAdapter; | |
import org.eclipse.swt.accessibility.AccessibleTextEvent; | |
import org.eclipse.swt.events.ModifyListener; | |
import org.eclipse.swt.events.SelectionEvent; | |
import org.eclipse.swt.events.SelectionListener; | |
import org.eclipse.swt.graphics.Color; | |
import org.eclipse.swt.graphics.Font; | |
import org.eclipse.swt.graphics.GC; | |
import org.eclipse.swt.graphics.Image; | |
import org.eclipse.swt.graphics.Point; | |
import org.eclipse.swt.graphics.Rectangle; | |
import org.eclipse.swt.widgets.Button; | |
import org.eclipse.swt.widgets.Composite; | |
import org.eclipse.swt.widgets.Control; | |
import org.eclipse.swt.widgets.Display; | |
import org.eclipse.swt.widgets.Event; | |
import org.eclipse.swt.widgets.Label; | |
import org.eclipse.swt.widgets.Layout; | |
import org.eclipse.swt.widgets.Listener; | |
import org.eclipse.swt.widgets.Shell; | |
import org.eclipse.swt.widgets.Table; | |
import org.eclipse.swt.widgets.TableItem; | |
import org.eclipse.swt.widgets.Text; | |
import org.eclipse.swt.widgets.TypedListener; | |
import org.eclipse.swt.widgets.Widget; | |
/** | |
* The ImageCombo class represents a selectable user interface object | |
* that combines a text field and a table and issues notification | |
* when an item is selected from the table. | |
* <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> | |
* <dd>BORDER, READ_ONLY, FLAT</dd> | |
* <dt><b>Events:</b> | |
* <dd>Selection</dd> | |
* </dl> | |
*/ | |
public final class ImageCombo extends Composite { | |
Text text; | |
Table table; | |
int visibleItemCount = 5; | |
Shell popup; | |
Button arrow; | |
boolean hasFocus; | |
Listener listener, filter; | |
Color foreground, background; | |
Font font; | |
/** | |
* 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 widget which will be the parent of the new instance (cannot be null) | |
* @param style the style of widget 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> | |
* </ul> | |
* | |
* @see SWT#BORDER | |
* @see SWT#READ_ONLY | |
* @see SWT#FLAT | |
* @see Widget#getStyle() | |
*/ | |
public ImageCombo (Composite parent, int style) { | |
super (parent, style = checkStyle (style)); | |
int textStyle = SWT.SINGLE; | |
if ((style & SWT.READ_ONLY) != 0) textStyle |= SWT.READ_ONLY; | |
if ((style & SWT.FLAT) != 0) textStyle |= SWT.FLAT; | |
text = new Text (this, SWT.NONE); | |
int arrowStyle = SWT.ARROW | SWT.DOWN; | |
if ((style & SWT.FLAT) != 0) arrowStyle |= SWT.FLAT; | |
arrow = new Button (this, arrowStyle); | |
listener = new Listener () { | |
@Override | |
public void handleEvent (Event event) { | |
if (popup == event.widget) { | |
popupEvent (event); | |
return; | |
} | |
if (text == event.widget) { | |
textEvent (event); | |
return; | |
} | |
if (table == event.widget) { | |
listEvent (event); | |
return; | |
} | |
if (arrow == event.widget) { | |
arrowEvent (event); | |
return; | |
} | |
if (ImageCombo.this == event.widget) { | |
comboEvent (event); | |
return; | |
} | |
if (getShell () == event.widget) { | |
handleFocus (SWT.FocusOut); | |
} | |
} | |
}; | |
filter = new Listener() { | |
@Override | |
public void handleEvent(Event event) { | |
Shell shell = ((Control)event.widget).getShell (); | |
if (shell == ImageCombo.this.getShell ()) { | |
handleFocus (SWT.FocusOut); | |
} | |
} | |
}; | |
int [] comboEvents = {SWT.Dispose, SWT.Move, SWT.Resize}; | |
for (int i=0; i<comboEvents.length; i++) this.addListener (comboEvents [i], listener); | |
int [] textEvents = {SWT.KeyDown, SWT.KeyUp, SWT.Modify, SWT.MouseDown, SWT.MouseUp, SWT.Traverse, SWT.FocusIn}; | |
for (int i=0; i<textEvents.length; i++) text.addListener (textEvents [i], listener); | |
int [] arrowEvents = {SWT.Selection, SWT.FocusIn}; | |
for (int i=0; i<arrowEvents.length; i++) arrow.addListener (arrowEvents [i], listener); | |
createPopup( -1); | |
initAccessible(); | |
} | |
static int checkStyle (int style) { | |
int mask = SWT.BORDER | SWT.READ_ONLY | SWT.FLAT | SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT; | |
return style & mask; | |
} | |
/** | |
* 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, Image image) { | |
checkWidget(); | |
if (string == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); | |
TableItem newItem = new TableItem(this.table,SWT.NONE); | |
newItem.setText(string); | |
if (image != null) newItem.setImage(image); | |
} | |
/** | |
* 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,Image image, int index) { | |
checkWidget(); | |
if (string == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); | |
TableItem newItem = new TableItem(this.table,SWT.NONE,index); | |
if (image != null) newItem.setImage(image); | |
} | |
/** | |
* 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) SWT.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) SWT.error (SWT.ERROR_NULL_ARGUMENT); | |
TypedListener typedListener = new TypedListener (listener); | |
addListener (SWT.Selection,typedListener); | |
addListener (SWT.DefaultSelection,typedListener); | |
} | |
void arrowEvent (Event event) { | |
switch (event.type) { | |
case SWT.FocusIn: { | |
handleFocus (SWT.FocusIn); | |
break; | |
} | |
case SWT.Selection: { | |
dropDown (!isDropped ()); | |
break; | |
} | |
} | |
} | |
/** | |
* 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 (); | |
text.clearSelection (); | |
table.deselectAll (); | |
} | |
void comboEvent (Event event) { | |
switch (event.type) { | |
case SWT.Dispose: | |
if (popup != null && !popup.isDisposed ()) { | |
table.removeListener (SWT.Dispose, listener); | |
popup.dispose (); | |
} | |
Shell shell = getShell (); | |
shell.removeListener (SWT.Deactivate, listener); | |
Display display = getDisplay (); | |
display.removeFilter (SWT.FocusIn, filter); | |
popup = null; | |
text = null; | |
table = null; | |
arrow = null; | |
break; | |
case SWT.Move: | |
dropDown (false); | |
break; | |
case SWT.Resize: | |
internalLayout (false); | |
break; | |
} | |
} | |
@Override | |
public Point computeSize (int wHint, int hHint, boolean changed) { | |
checkWidget (); | |
int width = 0, height = 0; | |
String[] items = getStringsFromTable(); | |
int textWidth = 0; | |
GC gc = new GC (text); | |
int spacer = gc.stringExtent (" ").x; //$NON-NLS-1$ | |
for (int i = 0; i < items.length; i++) { | |
textWidth = Math.max (gc.stringExtent (items[i]).x, textWidth); | |
} | |
gc.dispose(); | |
Point textSize = text.computeSize (SWT.DEFAULT, SWT.DEFAULT, changed); | |
Point arrowSize = arrow.computeSize (SWT.DEFAULT, SWT.DEFAULT, changed); | |
Point listSize = table.computeSize (wHint, SWT.DEFAULT, changed); | |
int borderWidth = getBorderWidth (); | |
height = Math.max (hHint, Math.max (textSize.y, arrowSize.y) + 2*borderWidth); | |
width = Math.max (wHint, Math.max (textWidth + 2*spacer + arrowSize.x + 2*borderWidth, listSize.x)); | |
return new Point (width, height); | |
} | |
void createPopup(int selectionIndex) { | |
// create shell and list | |
popup = new Shell (getShell (), SWT.NO_TRIM | SWT.ON_TOP); | |
int style = getStyle (); | |
int listStyle = SWT.SINGLE | SWT.V_SCROLL; | |
if ((style & SWT.FLAT) != 0) listStyle |= SWT.FLAT; | |
if ((style & SWT.RIGHT_TO_LEFT) != 0) listStyle |= SWT.RIGHT_TO_LEFT; | |
if ((style & SWT.LEFT_TO_RIGHT) != 0) listStyle |= SWT.LEFT_TO_RIGHT; | |
// create a table instead of a list. | |
table = new Table (popup, listStyle); | |
if (font != null) table.setFont (font); | |
if (foreground != null) table.setForeground (foreground); | |
if (background != null) table.setBackground (background); | |
int [] popupEvents = {SWT.Close, SWT.Paint, SWT.Deactivate}; | |
for (int i=0; i<popupEvents.length; i++) popup.addListener (popupEvents [i], listener); | |
int [] listEvents = {SWT.MouseUp, SWT.Selection, SWT.Traverse, SWT.KeyDown, SWT.KeyUp, SWT.FocusIn, SWT.Dispose}; | |
for (int i=0; i<listEvents.length; i++) table.addListener (listEvents [i], listener); | |
if (selectionIndex != -1) table.setSelection (selectionIndex); | |
} | |
/** | |
* 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 (); | |
table.deselect (index); | |
} | |
/** | |
* 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 (); | |
table.deselectAll (); | |
} | |
void dropDown (boolean drop) { | |
if (drop == isDropped ()) return; | |
if (!drop) { | |
popup.setVisible (false); | |
if (!isDisposed ()&& arrow.isFocusControl()) { | |
text.setFocus(); | |
} | |
return; | |
} | |
if (getShell() != popup.getParent ()) { | |
TableItem[] items = table.getItems (); | |
int selectionIndex = table.getSelectionIndex (); | |
table.removeListener (SWT.Dispose, listener); | |
popup.dispose(); | |
popup = null; | |
table = null; | |
createPopup (selectionIndex); | |
} | |
Point size = getSize (); | |
int itemCount = table.getItemCount (); | |
itemCount = (itemCount == 0) ? visibleItemCount : Math.min(visibleItemCount, itemCount); | |
int itemHeight = table.getItemHeight () * itemCount; | |
Point listSize = table.computeSize (SWT.DEFAULT, itemHeight, false); | |
table.setBounds (1, 1, Math.max (size.x - 2, listSize.x), listSize.y); | |
int index = table.getSelectionIndex (); | |
if (index != -1) table.setTopIndex (index); | |
Display display = getDisplay (); | |
Rectangle listRect = table.getBounds (); | |
Rectangle parentRect = display.map (getParent (), null, getBounds ()); | |
Point comboSize = getSize (); | |
Rectangle displayRect = getMonitor ().getClientArea (); | |
int width = Math.max (comboSize.x, listRect.width + 2); | |
int height = listRect.height + 2; | |
int x = parentRect.x; | |
int y = parentRect.y + comboSize.y; | |
if (y + height > displayRect.y + displayRect.height) y = parentRect.y - height; | |
popup.setBounds (x, y, width, height); | |
popup.setVisible (true); | |
table.setFocus (); | |
} | |
/* | |
* Return the Label immediately preceding the receiver in the z-order, | |
* or null if none. | |
*/ | |
Label getAssociatedLabel () { | |
Control[] siblings = getParent ().getChildren (); | |
for (int i = 0; i < siblings.length; i++) { | |
if (siblings [i] == ImageCombo.this) { | |
if (i > 0 && siblings [i-1] instanceof Label) { | |
return (Label) siblings [i-1]; | |
} | |
} | |
} | |
return null; | |
} | |
@Override | |
public Control [] getChildren () { | |
checkWidget(); | |
return new Control [0]; | |
} | |
/** | |
* Gets the editable state. | |
* | |
* @return whether or not the reciever 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> | |
* | |
* @since 3.0 | |
*/ | |
public boolean getEditable () { | |
checkWidget (); | |
return text.getEditable(); | |
} | |
/** | |
* 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 TableItem getItem (int index) { | |
checkWidget(); | |
return this.table.getItem (index); | |
} | |
/** | |
* 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 (); | |
return table.getItemCount (); | |
} | |
/** | |
* 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 (); | |
return table.getItemHeight (); | |
} | |
/** | |
* Returns an 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 TableItem [] getItems () { | |
checkWidget (); | |
return table.getItems (); | |
} | |
char getMnemonic (String string) { | |
int index = 0; | |
int length = string.length (); | |
do { | |
while ((index < length) && (string.charAt (index) != '&')) index++; | |
if (++index >= length) return '\0'; | |
if (string.charAt (index) != '&') return string.charAt (index); | |
index++; | |
} while (index < length); | |
return '\0'; | |
} | |
String [] getStringsFromTable() | |
{ | |
String[] items = new String[this.table.getItems().length]; | |
for (int i = 0, n = items.length; i < n; i++) { | |
items[i]=this.table.getItem(i).getText(); | |
} | |
return items; | |
} | |
/** | |
* Returns a <code>Point</code> whose x coordinate is the start | |
* of the selection in the receiver's text field, and whose y | |
* coordinate is the end of the selection. The returned values | |
* are zero-relative. An "empty" selection as indicated by | |
* the the x and y coordinates having the same value. | |
* | |
* @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 (); | |
return text.getSelection (); | |
} | |
/** | |
* 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 table.getSelectionIndex (); | |
} | |
@Override | |
public int getStyle () { | |
int style = super.getStyle (); | |
style &= ~SWT.READ_ONLY; | |
if (!text.getEditable()) style |= SWT.READ_ONLY; | |
return style; | |
} | |
/** | |
* Returns a string containing a copy of the contents of the | |
* receiver's text field. | |
* | |
* @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 (); | |
return text.getText (); | |
} | |
/** | |
* 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 (); | |
return text.getLineHeight (); | |
} | |
/** | |
* 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> | |
*/ | |
public int getTextLimit () { | |
checkWidget (); | |
return text.getTextLimit (); | |
} | |
/** | |
* Gets the number of items that are visible in the drop | |
* down portion of the receiver's list. | |
* | |
* @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 (); | |
return visibleItemCount; | |
} | |
void handleFocus (int type) { | |
if (isDisposed ()) return; | |
switch (type) { | |
case SWT.FocusIn: { | |
if (hasFocus) return; | |
if (getEditable ()) text.selectAll (); | |
hasFocus = true; | |
Shell shell = getShell (); | |
shell.removeListener (SWT.Deactivate, listener); | |
shell.addListener (SWT.Deactivate, listener); | |
Display display = getDisplay (); | |
display.removeFilter (SWT.FocusIn, filter); | |
display.addFilter (SWT.FocusIn, filter); | |
Event e = new Event (); | |
notifyListeners (SWT.FocusIn, e); | |
break; | |
} | |
case SWT.FocusOut: { | |
if (!hasFocus) return; | |
Control focusControl = getDisplay ().getFocusControl (); | |
if (focusControl == arrow || focusControl == table || focusControl == text) return; | |
hasFocus = false; | |
Shell shell = getShell (); | |
shell.removeListener(SWT.Deactivate, listener); | |
Display display = getDisplay (); | |
display.removeFilter (SWT.FocusIn, filter); | |
Event e = new Event (); | |
notifyListeners (SWT.FocusOut, e); | |
break; | |
} | |
} | |
} | |
/** | |
* 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) { | |
checkWidget (); | |
if (string == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); | |
return Arrays.asList(getStringsFromTable()).indexOf (string); | |
} | |
void initAccessible() { | |
AccessibleAdapter accessibleAdapter = new AccessibleAdapter () { | |
@Override | |
public void getName (AccessibleEvent e) { | |
String name = null; | |
Label label = getAssociatedLabel (); | |
if (label != null) { | |
name = stripMnemonic (label.getText()); | |
} | |
e.result = name; | |
} | |
@Override | |
public void getKeyboardShortcut(AccessibleEvent e) { | |
String shortcut = null; | |
Label label = getAssociatedLabel (); | |
if (label != null) { | |
String text = label.getText (); | |
if (text != null) { | |
char mnemonic = getMnemonic (text); | |
if (mnemonic != '\0') { | |
shortcut = "Alt+"+mnemonic; //$NON-NLS-1$ | |
} | |
} | |
} | |
e.result = shortcut; | |
} | |
@Override | |
public void getHelp (AccessibleEvent e) { | |
e.result = getToolTipText (); | |
} | |
}; | |
getAccessible ().addAccessibleListener (accessibleAdapter); | |
text.getAccessible ().addAccessibleListener (accessibleAdapter); | |
table.getAccessible ().addAccessibleListener (accessibleAdapter); | |
arrow.getAccessible ().addAccessibleListener (new AccessibleAdapter() { | |
@Override | |
public void getName (AccessibleEvent e) { | |
e.result = isDropped () ? SWT.getMessage ("SWT_Close") : SWT.getMessage ("SWT_Open"); //$NON-NLS-1$ //$NON-NLS-2$ | |
} | |
@Override | |
public void getKeyboardShortcut (AccessibleEvent e) { | |
e.result = "Alt+Down Arrow"; //$NON-NLS-1$ | |
} | |
@Override | |
public void getHelp (AccessibleEvent e) { | |
e.result = getToolTipText (); | |
} | |
}); | |
getAccessible().addAccessibleTextListener (new AccessibleTextAdapter() { | |
@Override | |
public void getCaretOffset (AccessibleTextEvent e) { | |
e.offset = text.getCaretPosition (); | |
} | |
}); | |
getAccessible().addAccessibleControlListener (new AccessibleControlAdapter() { | |
@Override | |
public void getChildAtPoint (AccessibleControlEvent e) { | |
Point testPoint = toControl (e.x, e.y); | |
if (getBounds ().contains (testPoint)) { | |
e.childID = ACC.CHILDID_SELF; | |
} | |
} | |
@Override | |
public void getLocation (AccessibleControlEvent e) { | |
Rectangle location = getBounds (); | |
Point pt = toDisplay (location.x, location.y); | |
e.x = pt.x; | |
e.y = pt.y; | |
e.width = location.width; | |
e.height = location.height; | |
} | |
@Override | |
public void getChildCount (AccessibleControlEvent e) { | |
e.detail = 0; | |
} | |
@Override | |
public void getRole (AccessibleControlEvent e) { | |
e.detail = ACC.ROLE_COMBOBOX; | |
} | |
@Override | |
public void getState (AccessibleControlEvent e) { | |
e.detail = ACC.STATE_NORMAL; | |
} | |
@Override | |
public void getValue (AccessibleControlEvent e) { | |
e.result = getText (); | |
} | |
}); | |
text.getAccessible ().addAccessibleControlListener (new AccessibleControlAdapter () { | |
@Override | |
public void getRole (AccessibleControlEvent e) { | |
e.detail = text.getEditable () ? ACC.ROLE_TEXT : ACC.ROLE_LABEL; | |
} | |
}); | |
arrow.getAccessible ().addAccessibleControlListener (new AccessibleControlAdapter() { | |
@Override | |
public void getDefaultAction (AccessibleControlEvent e) { | |
e.result = isDropped () ? SWT.getMessage ("SWT_Close") : SWT.getMessage ("SWT_Open"); //$NON-NLS-1$ //$NON-NLS-2$ | |
} | |
}); | |
} | |
boolean isDropped () { | |
return popup.getVisible (); | |
} | |
@Override | |
public boolean isFocusControl () { | |
checkWidget(); | |
if (text.isFocusControl () || arrow.isFocusControl () || table.isFocusControl () || popup.isFocusControl ()) { | |
return true; | |
} | |
return super.isFocusControl (); | |
} | |
void internalLayout (boolean changed) { | |
if (isDropped ()) dropDown (false); | |
Rectangle rect = getClientArea (); | |
int width = rect.width; | |
int height = rect.height; | |
Point arrowSize = arrow.computeSize (SWT.DEFAULT, height, changed); | |
text.setBounds (0, 0, width - arrowSize.x, height); | |
arrow.setBounds (width - arrowSize.x, 0, arrowSize.x, arrowSize.y); | |
} | |
void listEvent (Event event) { | |
switch (event.type) { | |
case SWT.Dispose: | |
if (getShell () != popup.getParent ()) { | |
TableItem[] items = table.getItems (); | |
int selectionIndex = table.getSelectionIndex (); | |
popup = null; | |
table = null; | |
createPopup (selectionIndex); | |
} | |
break; | |
case SWT.FocusIn: { | |
handleFocus (SWT.FocusIn); | |
break; | |
} | |
case SWT.MouseUp: { | |
if (event.button != 1) return; | |
dropDown (false); | |
break; | |
} | |
case SWT.Selection: { | |
int index = table.getSelectionIndex (); | |
if (index == -1) return; | |
text.setText (table.getItem (index).getText()); | |
text.selectAll (); | |
table.setSelection (index); | |
Event e = new Event (); | |
e.time = event.time; | |
e.stateMask = event.stateMask; | |
e.doit = event.doit; | |
notifyListeners (SWT.Selection, e); | |
event.doit = e.doit; | |
break; | |
} | |
case SWT.Traverse: { | |
switch (event.detail) { | |
case SWT.TRAVERSE_RETURN: | |
case SWT.TRAVERSE_ESCAPE: | |
case SWT.TRAVERSE_ARROW_PREVIOUS: | |
case SWT.TRAVERSE_ARROW_NEXT: | |
event.doit = false; | |
break; | |
} | |
Event e = new Event (); | |
e.time = event.time; | |
e.detail = event.detail; | |
e.doit = event.doit; | |
e.character = event.character; | |
e.keyCode = event.keyCode; | |
notifyListeners (SWT.Traverse, e); | |
event.doit = e.doit; | |
event.detail = e.detail; | |
break; | |
} | |
case SWT.KeyUp: { | |
Event e = new Event (); | |
e.time = event.time; | |
e.character = event.character; | |
e.keyCode = event.keyCode; | |
e.stateMask = event.stateMask; | |
notifyListeners (SWT.KeyUp, e); | |
break; | |
} | |
case SWT.KeyDown: { | |
if (event.character == SWT.ESC) { | |
// Escape key cancels popup list | |
dropDown (false); | |
} | |
if ((event.stateMask & SWT.ALT) != 0 && (event.keyCode == SWT.ARROW_UP || event.keyCode == SWT.ARROW_DOWN)) { | |
dropDown (false); | |
} | |
if (event.character == SWT.CR) { | |
// Enter causes default selection | |
dropDown (false); | |
Event e = new Event (); | |
e.time = event.time; | |
e.stateMask = event.stateMask; | |
notifyListeners (SWT.DefaultSelection, e); | |
} | |
// At this point the widget may have been disposed. | |
// If so, do not continue. | |
if (isDisposed ()) break; | |
Event e = new Event(); | |
e.time = event.time; | |
e.character = event.character; | |
e.keyCode = event.keyCode; | |
e.stateMask = event.stateMask; | |
notifyListeners(SWT.KeyDown, e); | |
break; | |
} | |
} | |
} | |
void popupEvent(Event event) { | |
switch (event.type) { | |
case SWT.Paint: | |
// draw black rectangle around list | |
Rectangle listRect = table.getBounds(); | |
Color black = getDisplay().getSystemColor(SWT.COLOR_BLACK); | |
event.gc.setForeground(black); | |
event.gc.drawRectangle(0, 0, listRect.width + 1, listRect.height + 1); | |
break; | |
case SWT.Close: | |
event.doit = false; | |
dropDown (false); | |
break; | |
case SWT.Deactivate: | |
dropDown (false); | |
break; | |
} | |
} | |
@Override | |
public void redraw () { | |
super.redraw(); | |
text.redraw(); | |
arrow.redraw(); | |
if (popup.isVisible()) table.redraw(); | |
} | |
@Override | |
public void redraw (int x, int y, int width, int height, boolean all) { | |
super.redraw(x, y, width, height, true); | |
} | |
/** | |
* 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(); | |
table.remove (index); | |
} | |
/** | |
* 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(); | |
table.remove (start, end); | |
} | |
/** | |
* 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) SWT.error (SWT.ERROR_NULL_ARGUMENT); | |
int index = -1; | |
for (int i = 0, n = table.getItemCount(); i < n; i++) { | |
if (table.getItem(i).getText().equals(string)) { | |
index = i; | |
break; | |
} | |
} | |
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(); | |
text.setText (""); //$NON-NLS-1$ | |
table.removeAll (); | |
} | |
/** | |
* 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) SWT.error (SWT.ERROR_NULL_ARGUMENT); | |
removeListener(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) SWT.error (SWT.ERROR_NULL_ARGUMENT); | |
removeListener(SWT.Selection, listener); | |
removeListener(SWT.DefaultSelection,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(); | |
if (index == -1) { | |
table.deselectAll (); | |
text.setText (""); //$NON-NLS-1$ | |
return; | |
} | |
if (0 <= index && index < table.getItemCount()) { | |
if (index != getSelectionIndex()) { | |
text.setText (table.getItem (index).getText()); | |
text.selectAll (); | |
table.select (index); | |
table.showSelection (); | |
} | |
} | |
} | |
@Override | |
public void setBackground (Color color) { | |
super.setBackground(color); | |
background = color; | |
if (text != null) text.setBackground(color); | |
if (table != null) table.setBackground(color); | |
if (arrow != null) arrow.setBackground(color); | |
} | |
/** | |
* 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> | |
* | |
* @since 3.0 | |
*/ | |
public void setEditable (boolean editable) { | |
checkWidget (); | |
text.setEditable(editable); | |
} | |
@Override | |
public void setEnabled (boolean enabled) { | |
super.setEnabled(enabled); | |
if (popup != null) popup.setVisible (false); | |
if (text != null) text.setEnabled(enabled); | |
if (arrow != null) arrow.setEnabled(enabled); | |
} | |
@Override | |
public boolean setFocus () { | |
checkWidget(); | |
return text.setFocus (); | |
} | |
@Override | |
public void setFont (Font font) { | |
super.setFont (font); | |
this.font = font; | |
text.setFont (font); | |
table.setFont (font); | |
internalLayout (true); | |
} | |
@Override | |
public void setForeground (Color color) { | |
super.setForeground(color); | |
foreground = color; | |
if (text != null) text.setForeground(color); | |
if (table != null) table.setForeground(color); | |
if (arrow != null) arrow.setForeground(color); | |
} | |
/** | |
* 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 <code>remove</code>'ing the old item at the index, and then | |
* <code>add</code>'ing 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, Image image) { | |
checkWidget(); | |
remove(index); | |
add(string,image,index); | |
} | |
/** | |
* 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 (); | |
this.table.removeAll(); | |
for (int i = 0, n = items.length; i < n; i++) { | |
add(items[i],null); | |
} | |
if (!text.getEditable ()) text.setText (""); //$NON-NLS-1$ | |
} | |
/** | |
* Sets the layout which is associated with the receiver to be | |
* the argument which may be null. | |
* <p> | |
* Note : No Layout can be set on this Control because it already | |
* manages the size and position of its children. | |
* </p> | |
* | |
* @param layout the receiver's new layout or null | |
* | |
* @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> | |
*/ | |
@Override | |
public void setLayout (Layout layout) { | |
checkWidget (); | |
return; | |
} | |
/** | |
* 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 (selection == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); | |
text.setSelection (selection.x, selection.y); | |
} | |
/** | |
* 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) SWT.error (SWT.ERROR_NULL_ARGUMENT); | |
int index = -1; | |
for (int i = 0, n = table.getItemCount(); i < n; i++) { | |
if (table.getItem(i).getText().equals(string)) { | |
index = i; | |
break; | |
} | |
} | |
if (index == -1) { | |
table.deselectAll (); | |
text.setText (string); | |
return; | |
} | |
text.setText (string); | |
text.selectAll (); | |
table.setSelection (index); | |
table.showSelection (); | |
} | |
/** | |
* Sets the maximum number of characters that the receiver's | |
* text field is capable of holding to be the argument. | |
* | |
* @param limit new text limit | |
* | |
* @exception IllegalArgumentException <ul> | |
* <li>ERROR_CANNOT_BE_ZERO - if the limit is zero</li> | |
* </ul> | |
* @exception SWTException <ul> | |
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
* </ul> | |
*/ | |
public void setTextLimit (int limit) { | |
checkWidget(); | |
text.setTextLimit (limit); | |
} | |
@Override | |
public void setToolTipText (String string) { | |
checkWidget(); | |
super.setToolTipText(string); | |
arrow.setToolTipText (string); | |
text.setToolTipText (string); | |
} | |
@Override | |
public void setVisible (boolean visible) { | |
super.setVisible(visible); | |
if (!visible) popup.setVisible(false); | |
} | |
/** | |
* Sets the number of items that are visible in the drop | |
* down portion of the receiver's list. | |
* | |
* @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; | |
visibleItemCount = count; | |
} | |
String stripMnemonic (String string) { | |
int index = 0; | |
int length = string.length (); | |
do { | |
while ((index < length) && (string.charAt (index) != '&')) index++; | |
if (++index >= length) return string; | |
if (string.charAt (index) != '&') { | |
return string.substring(0, index-1) + string.substring(index, length); | |
} | |
index++; | |
} while (index < length); | |
return string; | |
} | |
void textEvent (Event event) { | |
switch (event.type) { | |
case SWT.FocusIn: { | |
handleFocus (SWT.FocusIn); | |
break; | |
} | |
case SWT.KeyDown: { | |
if (event.character == SWT.CR) { | |
dropDown (false); | |
Event e = new Event (); | |
e.time = event.time; | |
e.stateMask = event.stateMask; | |
notifyListeners (SWT.DefaultSelection, e); | |
} | |
//At this point the widget may have been disposed. | |
// If so, do not continue. | |
if (isDisposed ()) break; | |
if (event.keyCode == SWT.ARROW_UP || event.keyCode == SWT.ARROW_DOWN) { | |
event.doit = false; | |
if ((event.stateMask & SWT.ALT) != 0) { | |
boolean dropped = isDropped (); | |
text.selectAll (); | |
if (!dropped) setFocus (); | |
dropDown (!dropped); | |
break; | |
} | |
int oldIndex = getSelectionIndex (); | |
if (event.keyCode == SWT.ARROW_UP) { | |
select (Math.max (oldIndex - 1, 0)); | |
} else { | |
select (Math.min (oldIndex + 1, getItemCount () - 1)); | |
} | |
if (oldIndex != getSelectionIndex ()) { | |
Event e = new Event(); | |
e.time = event.time; | |
e.stateMask = event.stateMask; | |
notifyListeners (SWT.Selection, e); | |
} | |
//At this point the widget may have been disposed. | |
// If so, do not continue. | |
if (isDisposed ()) break; | |
} | |
// Further work : Need to add support for incremental search in | |
// pop up list as characters typed in text widget | |
Event e = new Event (); | |
e.time = event.time; | |
e.character = event.character; | |
e.keyCode = event.keyCode; | |
e.stateMask = event.stateMask; | |
notifyListeners (SWT.KeyDown, e); | |
break; | |
} | |
case SWT.KeyUp: { | |
Event e = new Event (); | |
e.time = event.time; | |
e.character = event.character; | |
e.keyCode = event.keyCode; | |
e.stateMask = event.stateMask; | |
notifyListeners (SWT.KeyUp, e); | |
break; | |
} | |
case SWT.Modify: { | |
table.deselectAll (); | |
Event e = new Event (); | |
e.time = event.time; | |
notifyListeners (SWT.Modify, e); | |
break; | |
} | |
case SWT.MouseDown: { | |
if (event.button != 1) return; | |
if (text.getEditable ()) return; | |
boolean dropped = isDropped (); | |
text.selectAll (); | |
if (!dropped) setFocus (); | |
dropDown (!dropped); | |
break; | |
} | |
case SWT.MouseUp: { | |
if (event.button != 1) return; | |
if (text.getEditable ()) return; | |
text.selectAll (); | |
break; | |
} | |
case SWT.Traverse: { | |
switch (event.detail) { | |
case SWT.TRAVERSE_RETURN: | |
case SWT.TRAVERSE_ARROW_PREVIOUS: | |
case SWT.TRAVERSE_ARROW_NEXT: | |
// The enter causes default selection and | |
// the arrow keys are used to manipulate the list contents so | |
// do not use them for traversal. | |
event.doit = false; | |
break; | |
} | |
Event e = new Event (); | |
e.time = event.time; | |
e.detail = event.detail; | |
e.doit = event.doit; | |
e.character = event.character; | |
e.keyCode = event.keyCode; | |
notifyListeners (SWT.Traverse, e); | |
event.doit = e.doit; | |
event.detail = e.detail; | |
break; | |
} | |
} | |
} | |
} |