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Java > Open Source Codes > org > eclipse > jface > window > SameShellProvider


1 /*******************************************************************************
2  * Copyright (c) 2000, 2005 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.jface.window;
12
13 import org.eclipse.swt.widgets.Control;
14 import org.eclipse.swt.widgets.Shell;
15
16 /**
17  * Standard shell provider that always returns the shell containing the given
18  * control. This will always return the correct shell for the control, even if
19  * the control is reparented.
20  *
21  * @since 3.1
22  */
23 public class SameShellProvider implements IShellProvider {
24
25     private Control targetControl;
26     
27     /**
28      * Returns a shell provider that always returns the current
29      * shell for the given control.
30      *
31      * @param targetControl control whose shell will be tracked, or null if getShell() should always
32      * return null
33      */
34     public SameShellProvider(Control targetControl) {
35         this.targetControl = targetControl;
36     }
37     
38     /* (non-javadoc)
39      * @see IShellProvider#getShell()
40      */
41     public Shell getShell() {
42         if (targetControl instanceof Shell) {
43             return (Shell)targetControl;
44         }
45         
46         return targetControl == null? null :targetControl.getShell();
47     }
48
49 }
50
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