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1
11
12 package org.eclipse.ui.internal;
13
14 import java.util.ArrayList  ;
15 import java.util.Collection ;
16 import java.util.Iterator ;
17 import java.util.List ;
18 import java.util.Map ;
19
20 import org.eclipse.core.runtime.IConfigurationElement;
21 import org.eclipse.core.runtime.IExtension;
22 import org.eclipse.core.runtime.IExtensionDelta;
23 import org.eclipse.core.runtime.IExtensionPoint;
24 import org.eclipse.core.runtime.IRegistryChangeEvent;
25 import org.eclipse.core.runtime.IRegistryChangeListener;
26 import org.eclipse.jface.dialogs.MessageDialog;
27 import org.eclipse.swt.widgets.Display;
28 import org.eclipse.swt.widgets.Shell;
29 import org.eclipse.ui.IWorkbenchPage;
30 import org.eclipse.ui.IWorkbenchWindow;
31 import org.eclipse.ui.PlatformUI;
32 import org.eclipse.ui.internal.registry.IWorkbenchRegistryConstants;
33 import org.eclipse.ui.internal.themes.ColorDefinition;
34 import org.eclipse.ui.internal.themes.FontDefinition;
35 import org.eclipse.ui.internal.themes.ThemeElementHelper;
36 import org.eclipse.ui.internal.themes.ThemeRegistry;
37 import org.eclipse.ui.internal.themes.ThemeRegistryReader;
38 import org.eclipse.ui.internal.util.PrefUtil;
39 import org.eclipse.ui.themes.ITheme;
40 import org.eclipse.ui.themes.IThemeManager;
41
42 class ExtensionEventHandler implements IRegistryChangeListener {
43
44 private Workbench workbench;
45
46 private List changeList = new ArrayList (10);
47
48 public ExtensionEventHandler(Workbench workbench) {
49 this.workbench = workbench;
50 }
51
52 public void registryChanged(IRegistryChangeEvent event) {
53 try {
54 IExtensionDelta delta[] = event
55 .getExtensionDeltas(WorkbenchPlugin.PI_WORKBENCH);
56 IExtension ext;
57 IExtensionPoint extPt;
58 IWorkbenchWindow[] win = PlatformUI.getWorkbench()
59 .getWorkbenchWindows();
60 if (win.length == 0) {
61 return;
62 }
63 Display display = win[0].getShell().getDisplay();
64 if (display == null) {
65 return;
66 }
67 ArrayList appearList = new ArrayList (5);
68 ArrayList revokeList = new ArrayList (5);
69 String id = null;
70 int numPerspectives = 0;
71 int numActionSetPartAssoc = 0;
72
73 for (int i = 0; i < delta.length; i++) {
77 id = delta[i].getExtensionPoint().getSimpleIdentifier();
78 if (delta[i].getKind() == IExtensionDelta.ADDED) {
79 if (id.equals(IWorkbenchRegistryConstants.PL_ACTION_SETS)) {
80 appearList.add(0, delta[i]);
81 } else if (!id.equals(IWorkbenchRegistryConstants.PL_PERSPECTIVES)
82 && !id.equals(IWorkbenchRegistryConstants.PL_VIEWS)
83 && !id.equals(IWorkbenchRegistryConstants.PL_ACTION_SETS)) {
84 appearList.add(appearList.size() - numPerspectives,
85 delta[i]);
86 }
87 } else {
88 if (delta[i].getKind() == IExtensionDelta.REMOVED) {
89 if (id
90 .equals(IWorkbenchRegistryConstants.PL_ACTION_SET_PART_ASSOCIATIONS)) {
91 revokeList.add(0, delta[i]);
92 numActionSetPartAssoc++;
93 } else if (id
94 .equals(IWorkbenchRegistryConstants.PL_PERSPECTIVES)) {
95 revokeList.add(numActionSetPartAssoc, delta[i]);
96 } else {
97 revokeList.add(delta[i]);
98 }
99 }
100 }
101 }
102 Iterator iter = appearList.iterator();
103 IExtensionDelta extDelta = null;
104 while (iter.hasNext()) {
105 extDelta = (IExtensionDelta) iter.next();
106 extPt = extDelta.getExtensionPoint();
107 ext = extDelta.getExtension();
108 asyncAppear(display, extPt, ext);
109 }
110
119 resetCurrentPerspective(display);
120 } finally {
121 changeList.clear();
123 }
124
125 }
126
127 private void asyncAppear(Display display, final IExtensionPoint extpt,
128 final IExtension ext) {
129 Runnable run = new Runnable () {
130 public void run() {
131 appear(extpt, ext);
132 }
133 };
134 display.syncExec(run);
135 }
136
137 private void appear(IExtensionPoint extPt, IExtension ext) {
138 String name = extPt.getSimpleIdentifier();
139 if (name.equalsIgnoreCase(IWorkbenchRegistryConstants.PL_FONT_DEFINITIONS)) {
140 loadFontDefinitions(ext);
141 return;
142 }
143 if (name.equalsIgnoreCase(IWorkbenchRegistryConstants.PL_THEMES)) {
144 loadThemes(ext);
145 return;
146 }
147 }
148
149
152 private void loadFontDefinitions(IExtension ext) {
153 ThemeRegistryReader reader = new ThemeRegistryReader();
154 reader.setRegistry((ThemeRegistry) WorkbenchPlugin.getDefault()
155 .getThemeRegistry());
156 IConfigurationElement[] elements = ext.getConfigurationElements();
157 for (int i = 0; i < elements.length; i++) {
158 reader.readElement(elements[i]);
159 }
160
161 Collection fonts = reader.getFontDefinitions();
162 FontDefinition[] fontDefs = (FontDefinition[]) fonts
163 .toArray(new FontDefinition[fonts.size()]);
164 ThemeElementHelper.populateRegistry(workbench.getThemeManager()
165 .getTheme(IThemeManager.DEFAULT_THEME), fontDefs, PrefUtil
166 .getInternalPreferenceStore());
167 }
168
169 private void loadThemes(IExtension ext) {
171 ThemeRegistryReader reader = new ThemeRegistryReader();
172 ThemeRegistry registry = (ThemeRegistry) WorkbenchPlugin.getDefault()
173 .getThemeRegistry();
174 reader.setRegistry(registry);
175 IConfigurationElement[] elements = ext.getConfigurationElements();
176 for (int i = 0; i < elements.length; i++) {
177 reader.readElement(elements[i]);
178 }
179
180 Collection colors = reader.getColorDefinitions();
181 ColorDefinition[] colorDefs = (ColorDefinition[]) colors
182 .toArray(new ColorDefinition[colors.size()]);
183
184 ITheme theme = workbench.getThemeManager().getTheme(
185 IThemeManager.DEFAULT_THEME);
186 ThemeElementHelper.populateRegistry(theme, colorDefs, PrefUtil
187 .getInternalPreferenceStore());
188
189 Collection fonts = reader.getFontDefinitions();
190 FontDefinition[] fontDefs = (FontDefinition[]) fonts
191 .toArray(new FontDefinition[fonts.size()]);
192 ThemeElementHelper.populateRegistry(theme, fontDefs, PrefUtil
193 .getInternalPreferenceStore());
194
195 Map data = reader.getData();
196 registry.addData(data);
197 }
198
199 private void resetCurrentPerspective(Display display) {
200 if (changeList.isEmpty()) {
201 return;
202 }
203
204 final StringBuffer message = new StringBuffer (
205 ExtensionEventHandlerMessages.ExtensionEventHandler_following_changes);
206
207 for (Iterator i = changeList.iterator(); i.hasNext();) {
208 message.append(i.next());
209 }
210
211 message.append(ExtensionEventHandlerMessages.ExtensionEventHandler_need_to_reset);
212
213 display.asyncExec(new Runnable () {
214 public void run() {
215 Shell parentShell = null;
216 IWorkbenchWindow window = workbench.getActiveWorkbenchWindow();
217 if (window == null) {
218 if (workbench.getWorkbenchWindowCount() == 0) {
219 return;
220 }
221 window = workbench.getWorkbenchWindows()[0];
222 }
223
224 parentShell = window.getShell();
225
226 if (MessageDialog
227 .openQuestion(
228 parentShell,
229 ExtensionEventHandlerMessages.ExtensionEventHandler_reset_perspective, message.toString())) {
230 IWorkbenchPage page = window.getActivePage();
231 if (page == null) {
232 return;
233 }
234 page.resetPerspective();
235 }
236 }
237 });
238
239 }
240 }
241 |
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