blob: 7a2aaca5e483d95bbfad137e56017d30b31b2424 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
/*******************************************************************************
* Copyright (c) 2000, 2006 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.wst.xsd.ui.internal.refactor.actions;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.util.Assert;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
/**
* Action that dispatches the <code>IAction#run()</code> and the
* <code>ISelectionChangedListener#selectionChanged</code>
* according to the type of the selection.
*
* <ul>
* <li>if selection is of type <code>ITextSelection</code> then
* <code>run(ITextSelection)</code> and <code>selectionChanged(ITextSelection)</code>
* is called.</li>
* <li>if selection is of type <code>IStructuredSelection</code> then
* <code>run(IStructuredSelection)</code> and <code>
* selectionChanged(IStructuredSelection)</code> is called.</li>
* <li>default is to call <code>run(ISelection)</code> and <code>
* selectionChanged(ISelection)</code>.</li>
* </ul>
*
* <p>
* adapted from <code>org.eclipse.jdt.ui.actions.SelectionDispatchAction</code>
* </p>
*
*
*/
public abstract class SelectionDispatchAction extends Action implements ISelectionChangedListener {
private ISelection selection;
private Object model;
protected SelectionDispatchAction(ISelection selection) {
Assert.isNotNull(selection);
this.selection = selection;
}
/**
* Returns the selection provided by the site owning this action.
*
* @return the site's selection
*/
public ISelection getSelection() {
return selection;
}
/**
* Updates the action's enablement state according to the given selection. This
* default implementation calls one of the <code>selectionChanged</code>
* methods depending on the type of the passed selection.
*
* @param selection the selection this action is working on
*/
public void update(ISelection selection) {
dispatchSelectionChanged(selection);
}
/**
* Notifies this action that the given structured selection has changed. This default
* implementation calls <code>selectionChanged(ISelection selection)</code>.
*
* @param selection the new selection
*/
public void selectionChanged(IStructuredSelection selection) {
if (selection.size() == 1) {
Object object = selection.getFirstElement();
setEnabled(canEnable(object));
}
else{
setEnabled(false);
}
}
protected boolean canEnable(Object selectedObject){
return false;
}
/**
* Executes this actions with the given structured selection. This default implementation
* calls <code>run(ISelection selection)</code>.
*/
public void run(IStructuredSelection selection) {
run((ISelection)selection);
}
/**
* Notifies this action that the given text selection has changed. This default
* implementation calls <code>selectionChanged(ISelection selection)</code>.
*
* @param selection the new selection
*/
public void selectionChanged(ITextSelection selection) {
selectionChanged((ISelection)selection);
}
/**
* Executes this actions with the given text selection. This default implementation
* calls <code>run(ISelection selection)</code>.
*/
public void run(ITextSelection selection) {
run((ISelection)selection);
}
/**
* Notifies this action that the given selection has changed. This default
* implementation sets the action's enablement state to <code>false</code>.
*
* @param selection the new selection
*/
public void selectionChanged(ISelection selection) {
setEnabled(false);
}
/**
* Executes this actions with the given selection. This default implementation
* does nothing.
*/
public void run(ISelection selection) {
}
/* (non-Javadoc)
* Method declared on IAction.
*/
public void run() {
dispatchRun(getSelection());
}
/* (non-Javadoc)
* Method declared on ISelectionChangedListener.
*/
public void selectionChanged(SelectionChangedEvent event) {
dispatchSelectionChanged(event.getSelection());
}
private void dispatchSelectionChanged(ISelection selection) {
if (selection instanceof IStructuredSelection) {
selectionChanged((IStructuredSelection)selection);
} else if (selection instanceof ITextSelection) {
selectionChanged((ITextSelection)selection);
} else {
selectionChanged(selection);
}
}
protected void dispatchRun(ISelection selection) {
if (selection instanceof IStructuredSelection) {
run((IStructuredSelection)selection);
} else if (selection instanceof ITextSelection) {
run((ITextSelection)selection);
} else {
run(selection);
}
}
public final Object getModel()
{
return model;
}
public final void setModel(Object model)
{
this.model = model;
}
public boolean canRun() {
return true;
}
}
|
