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1
11 package org.eclipse.pde.internal.ui.editor.site;
12
13 import org.eclipse.core.runtime.CoreException;
14 import org.eclipse.pde.core.IModelChangeProvider;
15 import org.eclipse.pde.core.IModelChangedEvent;
16 import org.eclipse.pde.internal.core.isite.ISite;
17 import org.eclipse.pde.internal.core.isite.ISiteArchive;
18 import org.eclipse.pde.internal.core.isite.ISiteCategory;
19 import org.eclipse.pde.internal.core.isite.ISiteCategoryDefinition;
20 import org.eclipse.pde.internal.core.isite.ISiteDescription;
21 import org.eclipse.pde.internal.core.isite.ISiteFeature;
22 import org.eclipse.pde.internal.core.isite.ISiteModel;
23 import org.eclipse.pde.internal.core.isite.ISiteObject;
24 import org.eclipse.pde.internal.core.site.SiteObject;
25 import org.eclipse.pde.internal.ui.PDEPlugin;
26 import org.eclipse.pde.internal.ui.editor.ModelUndoManager;
27
28 public class SiteUndoManager extends ModelUndoManager {
29 public SiteUndoManager(SiteEditor editor) {
30 super(editor);
31 setUndoLevelLimit(30);
32 }
33
34 protected String  getPageId(Object obj) {
35 if (obj instanceof ISiteDescription) {
36 return ArchivePage.PAGE_ID;
37 }
38 if (obj instanceof ISiteFeature || obj instanceof ISiteCategory
39 || obj instanceof ISiteCategoryDefinition) {
40 return FeaturesPage.PAGE_ID;
41 }
42 return null;
45 }
46
49 protected void execute(IModelChangedEvent event, boolean undo) {
50 IModelChangeProvider model = event.getChangeProvider();
51 Object [] elements = event.getChangedObjects();
52 int type = event.getChangeType();
53 String propertyName = event.getChangedProperty();
54
55 switch (type) {
56 case IModelChangedEvent.INSERT :
57 if (undo)
58 executeRemove(model, elements);
59 else
60 executeAdd(model, elements);
61 break;
62 case IModelChangedEvent.REMOVE :
63 if (undo)
64 executeAdd(model, elements);
65 else
66 executeRemove(model, elements);
67 break;
68 case IModelChangedEvent.CHANGE :
69 if (undo)
70 executeChange(
71 elements[0],
72 propertyName,
73 event.getNewValue(),
74 event.getOldValue());
75 else
76 executeChange(
77 elements[0],
78 propertyName,
79 event.getOldValue(),
80 event.getNewValue());
81 }
82 }
83
84 private void executeAdd(IModelChangeProvider model, Object [] elements) {
85 ISiteModel siteModel = (model instanceof ISiteModel)?(ISiteModel)model:null;
86 ISite site = siteModel!=null?siteModel.getSite():null;
87
88 try {
89 for (int i = 0; i < elements.length; i++) {
90 Object element = elements[i];
91
92 if (element instanceof ISiteFeature) {
93 site.addFeatures(new ISiteFeature [] {(ISiteFeature) element});
94 } else if (element instanceof ISiteArchive) {
95 site.addArchives(new ISiteArchive[] {(ISiteArchive) element});
96 } else if (element instanceof ISiteCategoryDefinition) {
97 site.addCategoryDefinitions(new ISiteCategoryDefinition[] {(ISiteCategoryDefinition) element});
98 } else if (element instanceof ISiteCategory) {
99 ISiteCategory category = (ISiteCategory)element;
100 ISiteFeature feature = (ISiteFeature)category.getParent();
101 feature.addCategories(new ISiteCategory[] {category});
102 }
103 }
104 } catch (CoreException e) {
105 PDEPlugin.logException(e);
106 }
107 }
108
109 private void executeRemove(IModelChangeProvider model, Object [] elements) {
110 ISiteModel siteModel = (model instanceof ISiteModel)?(ISiteModel)model:null;
111 ISite site = siteModel!=null?siteModel.getSite():null;
112
113 try {
114 for (int i = 0; i < elements.length; i++) {
115 Object element = elements[i];
116
117 if (element instanceof ISiteFeature) {
118 site.removeFeatures(new ISiteFeature [] {(ISiteFeature) element});
119 } else if (element instanceof ISiteArchive) {
120 site.removeArchives(new ISiteArchive[] {(ISiteArchive) element});
121 } else if (element instanceof ISiteCategoryDefinition) {
122 site.removeCategoryDefinitions(new ISiteCategoryDefinition[] {(ISiteCategoryDefinition) element});
123 } else if (element instanceof ISiteCategory) {
124 ISiteCategory category = (ISiteCategory)element;
125 ISiteFeature feature = (ISiteFeature)category.getParent();
126 feature.removeCategories(new ISiteCategory[] {category});
127 }
128 }
129 } catch (CoreException e) {
130 PDEPlugin.logException(e);
131 }
132 }
133
134 private void executeChange(
135 Object element,
136 String propertyName,
137 Object oldValue,
138 Object newValue) {
139
140 if (element instanceof SiteObject) {
141 SiteObject sobj = (SiteObject) element;
142 try {
143 sobj.restoreProperty(propertyName, oldValue, newValue);
144 } catch (CoreException e) {
145 PDEPlugin.logException(e);
146 }
147 }
148 }
149
150 public void modelChanged(IModelChangedEvent event) {
151 if (event.getChangeType() == IModelChangedEvent.CHANGE) {
152 Object object = event.getChangedObjects()[0];
153 if (object instanceof ISiteObject) {
154 ISiteObject obj = (ISiteObject) object;
155 if (!(obj instanceof ISite) && !obj.isInTheModel())
157 return;
158 }
159 }
160 super.modelChanged(event);
161 }
162 }
163 |
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