blob: 7d8b950d1584cb067a7d62ebaa7aa36b1859afcd (
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
|
/*******************************************************************************
* Copyright (c) 2002, 2015 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.internal.cheatsheets.actions;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.swt.events.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.ui.*;
import org.eclipse.ui.internal.cheatsheets.CheatSheetPlugin;
/**
* This is the action used to contribute the CheatSheets menu to the workbench's
* help menu.
*/
public class CheatSheetMenuAction implements IWorkbenchWindowPulldownDelegate2, IPropertyListener {
/**
* The menu created by this action
*/
private Menu fMenu;
/**
* Indicates whether the cheat sheet history has changed and
* the sub menu needs to be recreated.
*/
protected boolean fRecreateMenu = false;
/**
* The constructor.
*/
public CheatSheetMenuAction() {
CheatSheetPlugin.getPlugin().getCheatSheetHistory().addListener(this);
}
@Override
public void dispose() {
setMenu(null);
CheatSheetPlugin.getPlugin().getCheatSheetHistory().removeListener(this);
}
/**
* Fills the drop-down menu with cheat sheets history
*
* @param menu the menu to fill
*/
protected void fillMenu(Menu menu) {
CheatSheetMenu cheatsheetMenuMenuItem = new CheatSheetMenu();
cheatsheetMenuMenuItem.fill(menu, 0);
}
@Override
public Menu getMenu(Control parent) {
return null;
}
@Override
public Menu getMenu(Menu parent) {
setMenu(new Menu(parent));
fillMenu(fMenu);
initMenu();
return fMenu;
}
@Override
public void init(IWorkbenchWindow window) {
}
/**
* Creates the menu for the action
*/
private void initMenu() {
// Add listener to repopulate the menu each time
// it is shown because of dynamic history list
fMenu.addMenuListener(new MenuAdapter() {
@Override
public void menuShown(MenuEvent e) {
if (fRecreateMenu) {
Menu m = (Menu)e.widget;
MenuItem[] items = m.getItems();
for (int i=0; i < items.length; i++) {
items[i].dispose();
}
fillMenu(m);
fRecreateMenu= false;
}
}
});
}
@Override
public void propertyChanged(Object source, int propId) {
fRecreateMenu = true;
}
@Override
public void run(IAction action) {
}
@Override
public void selectionChanged(IAction action, ISelection selection) {
}
/**
* Sets this action's drop-down menu, disposing the previous menu.
*
* @param menu the new menu
*/
private void setMenu(Menu menu) {
if (fMenu != null) {
fMenu.dispose();
}
fMenu = menu;
}
}
|
