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1
11 package org.eclipse.jdt.internal.ui.navigator;
12
13 import java.util.Arrays  ;
14
15 import org.eclipse.jface.preference.IPreferenceStore;
16
17 import org.eclipse.ui.IActionBars;
18 import org.eclipse.ui.IMemento;
19 import org.eclipse.ui.actions.ActionContext;
20 import org.eclipse.ui.navigator.CommonActionProvider;
21 import org.eclipse.ui.navigator.ICommonActionExtensionSite;
22 import org.eclipse.ui.navigator.IExtensionActivationListener;
23 import org.eclipse.ui.navigator.IExtensionStateModel;
24 import org.eclipse.ui.navigator.INavigatorActivationService;
25
26 import org.eclipse.jdt.internal.ui.JavaPlugin;
27 import org.eclipse.jdt.internal.ui.navigator.IExtensionStateConstants.Values;
28
29
37 public class JavaNavigatorViewActionProvider extends CommonActionProvider {
38
39 private static final int HIERARCHICAL_LAYOUT= 0x1;
40
41 private static final int FLAT_LAYOUT= 0x2;
42
43 private static final String TAG_LAYOUT= "org.eclipse.jdt.internal.ui.navigator.layout";
45 private IExtensionStateModel fStateModel;
46
47 private CommonLayoutActionGroup fLayoutActionGroup;
48
49 private ICommonActionExtensionSite fExtensionSite;
50
51 private String fExtensionId;
52
53 private IActionBars fActionBars;
54
55 private boolean fEnabled= false;
56
57 private IExtensionActivationListener fMenuUpdater= new IExtensionActivationListener() {
58
59 public void onExtensionActivation(String viewerId, String [] theNavigatorExtensionIds, boolean isCurrentlyActive) {
60
61 if (fExtensionSite != null && fActionBars != null) {
62
63 int search= Arrays.binarySearch(theNavigatorExtensionIds, fExtensionId);
64 if (search > -1) {
65 if (isMyViewer(viewerId)) {
66 if (wasEnabled(isCurrentlyActive))
67 fLayoutActionGroup.fillActionBars(fActionBars);
68
69 else
70 if (wasDisabled(isCurrentlyActive))
71 fLayoutActionGroup.unfillActionBars(fActionBars);
72 }
74 fEnabled= isCurrentlyActive;
75 }
76 }
77
78 }
79
80 private boolean isMyViewer(String viewerId) {
81 String myViewerId= fExtensionSite.getViewSite().getId();
82 return myViewerId != null && myViewerId.equals(viewerId);
83 }
84
85 private boolean wasDisabled(boolean isActive) {
86 return fEnabled && !isActive;
87 }
88
89 private boolean wasEnabled(boolean isActive) {
90 return !fEnabled && isActive;
91 }
92 };
93
94
95 public void fillActionBars(IActionBars actionBars) {
96 fActionBars= actionBars;
97 fLayoutActionGroup.fillActionBars(actionBars);
98 }
99
100 public void init(ICommonActionExtensionSite site) {
101
102 fExtensionSite= site;
103
104 fStateModel= fExtensionSite.getExtensionStateModel();
105 fLayoutActionGroup= new CommonLayoutActionGroup(fExtensionSite.getStructuredViewer(), fStateModel);
106
107 INavigatorActivationService activationService= fExtensionSite.getContentService().getActivationService();
108 activationService.addExtensionActivationListener(fMenuUpdater);
109
110 fExtensionId= fExtensionSite.getExtensionId();
111
112 fEnabled= true;
113
114 }
115
116 public void dispose() {
117 super.dispose();
118 fExtensionSite.getContentService().getActivationService().removeExtensionActivationListener(fMenuUpdater);
119 }
120
121 public void setContext(ActionContext context) {
122 super.setContext(context);
123 }
124
125 public void restoreState(IMemento memento) {
126 boolean isCurrentLayoutFlat= true;
127 Integer state= null;
128 if (memento != null)
129 state= memento.getInteger(TAG_LAYOUT);
130
131 if (state == null) {
133 IPreferenceStore store= JavaPlugin.getDefault().getPreferenceStore();
134 state= new Integer (store.getInt(TAG_LAYOUT));
135 }
136
137 if (state.intValue() == FLAT_LAYOUT)
138 isCurrentLayoutFlat= true;
139 else
140 if (state.intValue() == HIERARCHICAL_LAYOUT)
141 isCurrentLayoutFlat= false;
142
143 fStateModel.setBooleanProperty(Values.IS_LAYOUT_FLAT, isCurrentLayoutFlat);
144 fLayoutActionGroup.setFlatLayout(isCurrentLayoutFlat);
145 }
146
147 public void saveState(IMemento aMemento) {
148 super.saveState(aMemento);
149 IPreferenceStore store= JavaPlugin.getDefault().getPreferenceStore();
150 if (fStateModel.getBooleanProperty(Values.IS_LAYOUT_FLAT))
151 store.setValue(TAG_LAYOUT, FLAT_LAYOUT);
152 else
153 store.setValue(TAG_LAYOUT, HIERARCHICAL_LAYOUT);
154
155 }
156 }
157 |
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