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
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
|
/*******************************************************************************
* Copyright (c) 2001, 2010 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.adt.design.directedit;
import java.text.MessageFormat;
import org.eclipse.jface.viewers.ComboBoxCellEditor;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CCombo;
import org.eclipse.swt.events.FocusAdapter;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.TraverseEvent;
import org.eclipse.swt.events.TraverseListener;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.TypedListener;
import org.eclipse.wst.xsd.ui.internal.adt.edit.ComponentReferenceEditManager;
import org.eclipse.wst.xsd.ui.internal.adt.edit.IComponentDialog;
import org.eclipse.wst.xsd.ui.internal.editor.Messages;
/*
* This wraps the ComboBoxCellEditor.
* We need to apply and deactivate the combo on a single click (not on a double click like
* the ComboBoxCellEditor).
*/
public class ADTComboBoxCellEditor extends ComboBoxCellEditor
{
private static final int adtDefaultStyle = SWT.NONE;
/**
* Used to determine if the value should be applied to the cell.
*/
private boolean continueApply;
private boolean isTraversing = false;
private Object selectedValue;
private ComponentReferenceEditManager componentReferenceEditManager;
// This prevents the cell editor from being deactivated while handling the New or Browse selection.
private boolean isHandlingSelection = false;
/**
* Creates a new cell editor with a combo containing the given list of choices
* and parented under the given control. The cell editor value is the
* zero-based index of the selected item. Initially, the cell editor has no
* cell validator and the first item in the list is selected.
*
* @param parent
* the parent control
* @param items
* the list of strings for the combo box
*/
public ADTComboBoxCellEditor(Composite parent, String[] items, ComponentReferenceEditManager editManager)
{
super(parent, items, adtDefaultStyle | SWT.READ_ONLY);
setItems(items);
componentReferenceEditManager = editManager;
}
private void removeListeners(CCombo comboBox, int event)
{
Listener [] listeners = comboBox.getListeners(event);
int length = listeners.length;
for (int i = 0; i < length; i++)
{
Listener l = listeners[i];
if (l instanceof TypedListener)
{
TypedListener typedListener = (TypedListener)l;
String className = typedListener.getEventListener().getClass().getCanonicalName();
// It's possible that there are other typed listeners added to the CCombo.
// Currently there are none, but as an extra check, I want to ensure
// I'm removing the ones added from the inherited class.
// I've tested this and I know it removes the following:
// org.eclipse.jface.viewers.ComboBoxCellEditor$2
// org.eclipse.jface.viewers.ComboBoxCellEditor$4
// which are indeed the ones I'm customizing
if (className != null && className.contains("org.eclipse.jface.viewers.ComboBoxCellEditor"))
{
comboBox.removeListener(event, l);
}
}
}
}
/*
* (non-Javadoc) Method declared on CellEditor.
*/
protected Control createControl(Composite parent)
{
CCombo comboBox = (CCombo)super.createControl(parent);
comboBox.setFont(parent.getFont());
// Need to remove the listeners added from ComboBoxCellEditor
removeListeners(comboBox, SWT.Selection);
removeListeners(comboBox, SWT.DefaultSelection);
removeListeners(comboBox, SWT.FocusIn);
removeListeners(comboBox, SWT.FocusOut);
// Now add our custom listeners
comboBox.addSelectionListener(new SelectionAdapter()
{
public void widgetDefaultSelected(SelectionEvent event)
{
// Want the same behaviour since hitting return on Browse or New should launch the dialogs,
// and not immediately apply the value
// applyEditorValueAndDeactivate();
widgetSelected(event);
}
public void widgetSelected(SelectionEvent event)
{
continueApply = true;
CCombo comboBox = getCCombo();
isHandlingSelection = true;
Object newValue = null;
try
{
int selection = comboBox.getSelectionIndex();
if (isTraversing)
{
isTraversing = false;
return;
}
String[] items = getItems();
String stringSelection = items[selection];
if (stringSelection.equals(Messages._UI_COMBO_BROWSE))
{
continueApply = true;
newValue = invokeDialog(componentReferenceEditManager.getBrowseDialog());
}
else if (stringSelection.equals(Messages._UI_COMBO_NEW))
{
continueApply = true;
newValue = invokeDialog(componentReferenceEditManager.getNewDialog());
}
}
finally
{
isHandlingSelection = false;
}
if (continueApply)
{
if (newValue == null)
{
int index = comboBox.getSelectionIndex();
if (index != -1)
{
selectedValue = comboBox.getItem(index);
}
}
else
{
selectedValue = newValue;
}
applyEditorValueAndDeactivate();
focusLost();
}
}
});
comboBox.addTraverseListener(new TraverseListener()
{
public void keyTraversed(TraverseEvent e)
{
if (e.detail == SWT.TRAVERSE_ARROW_NEXT || e.detail == SWT.TRAVERSE_ARROW_PREVIOUS)
{
isTraversing = true;
}
}
});
comboBox.addFocusListener(new FocusAdapter()
{
public void focusLost(FocusEvent e)
{
if (!isHandlingSelection)
ADTComboBoxCellEditor.this.focusLost();
}
});
return comboBox;
}
private Object invokeDialog(IComponentDialog dialog)
{
Object newValue = null;
if (dialog == null)
{
return null;
}
//dialog.setInitialComponent(setObject);
if (dialog.createAndOpen() == Window.OK)
{
newValue = dialog.getSelectedComponent();
}
else
{
continueApply = false;
focusLost();
}
return newValue;
}
public Object getSelectedValue()
{
return selectedValue;
}
protected CCombo getCCombo()
{
return (CCombo)getControl();
}
///////// ComboBox cell editor
void applyEditorValueAndDeactivate()
{
// must set the selection before getting value
CCombo comboBox = getCCombo();
String[] items = getItems();
int selection = comboBox.getSelectionIndex();
Object newValue = doGetValue();
markDirty();
boolean isValid = isCorrect(newValue);
setValueValid(isValid);
if (!isValid)
{
// Only format if the 'index' is valid
if (items.length > 0 && selection >= 0 && selection < items.length)
{
// try to insert the current value into the error message.
setErrorMessage(MessageFormat.format(getErrorMessage(), new Object[] { items[selection] }));
}
else
{
// Since we don't have a valid index, assume we're using an
// 'edit'
// combo so format using its text value
setErrorMessage(MessageFormat.format(getErrorMessage(), new Object[] { comboBox.getText() }));
}
}
fireApplyEditorValue();
deactivate();
}
}
|
