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1
5 package org.terracotta.dso.views;
6
7 import org.eclipse.jdt.internal.ui.util.SelectionUtil;
8 import org.eclipse.jface.action.Action;
9 import org.eclipse.jface.action.ActionContributionItem;
10 import org.eclipse.jface.action.IMenuCreator;
11 import org.eclipse.jface.viewers.ISelection;
12 import org.eclipse.jface.viewers.ISelectionProvider;
13 import org.eclipse.swt.widgets.Control;
14 import org.eclipse.swt.widgets.Menu;
15 import org.eclipse.ui.actions.ActionContext;
16
17 import com.terracottatech.config.LockLevel;
18
19 public class LockLevelAction extends Action implements IMenuCreator {
20 ConfigViewPart fPart;
21 Action fRead;
22 Action fWrite;
23 Action fConcurrent;
24
25 LockLevelAction(ConfigViewPart part) {
26 super("Lock level", AS_DROP_DOWN_MENU);
27 setMenuCreator(this);
28 fPart = part;
29
30 fRead = new Action("Read", AS_RADIO_BUTTON) {
31 public void run() {
32 if(isChecked()) {
33 LockLevelAction.this.run();
34 }
35 }
36 };
37 fWrite = new Action("Write", AS_RADIO_BUTTON) {
38 public void run() {
39 if(isChecked()) {
40 LockLevelAction.this.run();
41 }
42 }
43 };
44 fConcurrent = new Action("Concurrent", AS_RADIO_BUTTON) {
45 public void run() {
46 if(isChecked()) {
47 LockLevelAction.this.run();
48 }
49 }
50 };
51 }
52
53 public void run() {
54 fPart.setLockLevel(this);
55 }
56
57 LockLevel.Enum getLevel() {
58 if(fRead.isChecked()) {
59 return LockLevel.READ;
60 } else if(fWrite.isChecked()) {
61 return LockLevel.WRITE;
62 } else {
63 return LockLevel.CONCURRENT;
64 }
65 }
66
67 public void setContext(ActionContext context) {
68 Object  element = SelectionUtil.getSingleElement(getSelection());
69
70 if(element instanceof LockWrapper) {
71 LockWrapper wrapper = (LockWrapper)element;
72 LockLevel level = wrapper.getLevel();
73
74 fRead.setChecked(level.enumValue() == LockLevel.READ);
75 fWrite.setChecked(level.enumValue() == LockLevel.WRITE);
76 fConcurrent.setChecked(level.enumValue() == LockLevel.CONCURRENT);
77 }
78 }
79
80 public boolean canActionBeAdded() {
81 Object element = SelectionUtil.getSingleElement(getSelection());
82 return element instanceof LockWrapper;
83 }
84
85 private ISelection getSelection() {
86 ISelectionProvider provider = fPart.getSite().getSelectionProvider();
87
88 if(provider != null) {
89 return provider.getSelection();
90 }
91
92 return null;
93 }
94
95 public void dispose() {
96
97 }
98
99 private void fillMenu(Menu menu) {
100 ActionContributionItem item;
101
102 item = new ActionContributionItem(fRead);
103 item.fill(menu, -1);
104
105 item = new ActionContributionItem(fWrite);
106 item.fill(menu, -1);
107
108 item = new ActionContributionItem(fConcurrent);
109 item.fill(menu, -1);
110 }
111
112 public Menu getMenu(Control parent) {
113 Menu menu = new Menu(parent);
114 fillMenu(menu);
115 return menu;
116 }
117
118 public Menu getMenu(Menu parent) {
119 Menu menu = new Menu(parent);
120 fillMenu(menu);
121 return menu;
122 }
123 }
124
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