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1
11 package org.eclipse.ant.internal.ui.preferences;
12
13
14 import java.util.ArrayList  ;
15 import java.util.Collections ;
16 import java.util.Iterator ;
17 import java.util.List ;
18
19 import org.eclipse.core.runtime.IAdaptable;
20 import org.eclipse.core.runtime.Platform;
21 import org.eclipse.jface.resource.ImageDescriptor;
22 import org.eclipse.ui.ISharedImages;
23 import org.eclipse.ui.PlatformUI;
24 import org.eclipse.ui.model.IWorkbenchAdapter;
25 import org.eclipse.ui.wizards.datatransfer.IImportStructureProvider;
26
27 class MinimizedFileSystemElement implements IWorkbenchAdapter, IAdaptable {
28 private boolean populated = false;
29 private List folders = null;
30 private List files = null;
31 private String name;
32 private boolean isDirectory = false;
33 private MinimizedFileSystemElement parent;
34 private Object fileSystemObject;
35
36
42 public MinimizedFileSystemElement(String name, MinimizedFileSystemElement parent, boolean isDirectory) {
43 this.name = name;
44 this.parent = parent;
45 this.isDirectory = isDirectory;
46 if (parent != null) {
47 parent.addChild(this);
48 }
49 }
50
51
54 public Object getAdapter(Class adapter) {
55 if (adapter == IWorkbenchAdapter.class) {
56 return this;
57 }
58 return Platform.getAdapterManager().getAdapter(this, adapter);
60 }
61
62
66 public boolean isDirectory() {
67 return isDirectory;
68 }
69
70
75 private void addChild(MinimizedFileSystemElement child) {
76 if (child.isDirectory()) {
77 if (folders == null) {
78 folders = new ArrayList (1);
79 }
80 folders.add(child);
81 } else {
82 if (files == null) {
83 files = new ArrayList (1);
84 }
85 files.add(child);
86 }
87 }
88
92 protected List getFiles(IImportStructureProvider provider) {
93 if (!populated) {
94 populate(provider);
95 }
96
97 if (files == null) {
98 return Collections.EMPTY_LIST;
99 }
100 return files;
101
102 }
103
107 protected List getFolders(IImportStructureProvider provider) {
108 if (!populated) {
109 populate(provider);
110 }
111
112 return getFolders();
113
114 }
115
116 protected List getFolders() {
117 if (folders == null){
118 return Collections.EMPTY_LIST;
119 }
120 return folders;
121 }
122
125 protected boolean isPopulated() {
126 return this.populated;
127 }
128
131 protected boolean notPopulated() {
132 return !this.populated;
133 }
134
139 private void populate(IImportStructureProvider provider) {
140
141 List children = provider.getChildren(fileSystemObject);
142 if (children == null) {
143 children = new ArrayList (1);
144 }
145 Iterator childrenEnum = children.iterator();
146 while (childrenEnum.hasNext()) {
147 Object child = childrenEnum.next();
148
149 String elementLabel = provider.getLabel(child);
150 boolean isFolder= provider.isFolder(child);
151 if (!isFolder && !elementLabel.endsWith(".class")) { continue;
153 }
154 MinimizedFileSystemElement result = new MinimizedFileSystemElement(elementLabel, this, isFolder);
156 result.setFileSystemObject(child);
157 }
158 setPopulated();
159 }
160
161
166 protected Object getFileSystemObject() {
167 return fileSystemObject;
168 }
169
170
175 protected void setFileSystemObject(Object value) {
176 fileSystemObject = value;
177 }
178
181 protected void setPopulated() {
182 this.populated = true;
183 }
184
187 public Object [] getChildren(Object o) {
188 return getFolders().toArray();
189 }
190
191
194 public ImageDescriptor getImageDescriptor(Object object) {
195 if (isDirectory()) {
196 return PlatformUI.getWorkbench().getSharedImages().getImageDescriptor(ISharedImages.IMG_OBJ_FOLDER);
197 }
198 return PlatformUI.getWorkbench().getEditorRegistry().getImageDescriptor(name);
199 }
200
201
204 public String getLabel(Object o) {
205 return name;
206 }
207
208
211 public Object getParent(Object o) {
212 return parent;
213 }
214
215 }
216
217 |
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