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1
12 package org.eclipse.jdt.internal.ui.callhierarchy;
13
14 import org.eclipse.swt.SWT;
15 import org.eclipse.swt.widgets.Control;
16 import org.eclipse.swt.widgets.Menu;
17 import org.eclipse.swt.widgets.MenuItem;
18
19 import org.eclipse.jface.action.Action;
20 import org.eclipse.jface.action.ActionContributionItem;
21 import org.eclipse.jface.action.IMenuCreator;
22
23 import org.eclipse.ui.PlatformUI;
24
25 import org.eclipse.jdt.core.IMethod;
26
27 import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
28 import org.eclipse.jdt.internal.ui.JavaPluginImages;
29
30
31 class HistoryDropDownAction extends Action implements IMenuCreator {
32
33 private static class ClearHistoryAction extends Action {
34
35 private CallHierarchyViewPart fView;
36
37 public ClearHistoryAction(CallHierarchyViewPart view) {
38 super(CallHierarchyMessages.HistoryDropDownAction_clearhistory_label);
39 fView= view;
40 }
41
42 public void run() {
43 fView.setHistoryEntries(new IMethod[0]);
44 fView.setMethod(null);
45 }
46 }
47
48 public static final int RESULTS_IN_DROP_DOWN = 10;
49 private CallHierarchyViewPart fView;
50 private Menu fMenu;
51
52 public HistoryDropDownAction(CallHierarchyViewPart view) {
53 fView = view;
54 fMenu = null;
55 setToolTipText(CallHierarchyMessages.HistoryDropDownAction_tooltip);
56 JavaPluginImages.setLocalImageDescriptors(this, "history_list.gif");
58 PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.CALL_HIERARCHY_HISTORY_DROP_DOWN_ACTION);
59
60 setMenuCreator(this);
61 }
62
63 public Menu getMenu(Menu parent) {
64 return null;
65 }
66
67 public Menu getMenu(Control parent) {
68 if (fMenu != null) {
69 fMenu.dispose();
70 }
71 fMenu= new Menu(parent);
72 IMethod[] elements= fView.getHistoryEntries();
73 addEntries(fMenu, elements);
74 new MenuItem(fMenu, SWT.SEPARATOR);
75 addActionToMenu(fMenu, new HistoryListAction(fView));
76 addActionToMenu(fMenu, new ClearHistoryAction(fView));
77 return fMenu;
78 }
79
80 public void dispose() {
81 fView = null;
82
83 if (fMenu != null) {
84 fMenu.dispose();
85 fMenu = null;
86 }
87 }
88
89 protected void addActionToMenu(Menu parent, Action action) {
90 ActionContributionItem item = new ActionContributionItem(action);
91 item.fill(parent, -1);
92 }
93
94 private boolean addEntries(Menu menu, IMethod[] elements) {
95 boolean checked = false;
96
97 int min = Math.min(elements.length, RESULTS_IN_DROP_DOWN);
98
99 for (int i = 0; i < min; i++) {
100 HistoryAction action = new HistoryAction(fView, elements[i]);
101 action.setChecked(elements[i].equals(fView.getMethod()));
102 checked = checked || action.isChecked();
103 addActionToMenu(menu, action);
104 }
105
106 return checked;
107 }
108
109 public void run() {
110 (new HistoryListAction(fView)).run();
111 }
112 }
113 |
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