Source Code Cross Referenced for SharedLabelProvider.java in  » IDE-Eclipse » Eclipse-plug-in-development » org » eclipse » pde » internal » ui » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Eclipse » Eclipse plug in development » org.eclipse.pde.internal.ui.util 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*******************************************************************************
002:         * Copyright (c) 2000, 2007 IBM Corporation and others.
003:         * All rights reserved. This program and the accompanying materials
004:         * are made available under the terms of the Eclipse Public License v1.0
005:         * which accompanies this distribution, and is available at
006:         * http://www.eclipse.org/legal/epl-v10.html
007:         *
008:         * Contributors:
009:         *     IBM Corporation - initial API and implementation
010:         *******************************************************************************/package org.eclipse.pde.internal.ui.util;
011:
012:        import java.io.File;
013:        import java.io.FileInputStream;
014:        import java.io.FileNotFoundException;
015:        import java.io.IOException;
016:        import java.io.InputStream;
017:        import java.util.ArrayList;
018:        import java.util.Enumeration;
019:        import java.util.Hashtable;
020:        import java.util.zip.ZipEntry;
021:        import java.util.zip.ZipFile;
022:
023:        import org.eclipse.jface.resource.ImageDescriptor;
024:        import org.eclipse.jface.viewers.ITableLabelProvider;
025:        import org.eclipse.jface.viewers.LabelProvider;
026:        import org.eclipse.pde.core.plugin.IPluginModelBase;
027:        import org.eclipse.pde.core.plugin.PluginRegistry;
028:        import org.eclipse.pde.internal.ui.PDEPluginImages;
029:        import org.eclipse.swt.graphics.Image;
030:        import org.eclipse.swt.graphics.ImageData;
031:        import org.eclipse.ui.plugin.AbstractUIPlugin;
032:
033:        public class SharedLabelProvider extends LabelProvider implements 
034:                ITableLabelProvider {
035:            public static final int F_ERROR = 1;
036:            public static final int F_WARNING = 2;
037:            public static final int F_EXPORT = 4;
038:            public static final int F_EDIT = 8;
039:            public static final int F_BINARY = 16;
040:            public static final int F_EXTERNAL = 32;
041:            public static final int F_JAVA = 64;
042:            public static final int F_JAR = 128;
043:            public static final int F_PROJECT = 256;
044:            Hashtable images = new Hashtable();
045:            ArrayList consumers = new ArrayList();
046:            private Image fBlankImage;
047:
048:            public SharedLabelProvider() {
049:
050:            }
051:
052:            public void connect(Object consumer) {
053:                if (!consumers.contains(consumer))
054:                    consumers.add(consumer);
055:            }
056:
057:            public void disconnect(Object consumer) {
058:                consumers.remove(consumer);
059:                if (consumers.size() == 0) {
060:                    dispose();
061:                }
062:            }
063:
064:            public void dispose() {
065:                if (consumers.size() == 0) {
066:                    for (Enumeration elements = images.elements(); elements
067:                            .hasMoreElements();) {
068:                        ((Image) elements.nextElement()).dispose();
069:                    }
070:                    images.clear();
071:                    if (fBlankImage != null) {
072:                        fBlankImage.dispose();
073:                        fBlankImage = null;
074:                    }
075:                }
076:            }
077:
078:            public Image get(ImageDescriptor desc) {
079:                return get(desc, 0);
080:            }
081:
082:            public Image get(ImageDescriptor desc, int flags) {
083:                Object key = desc;
084:
085:                if (flags != 0) {
086:                    key = getKey(desc.hashCode(), flags);
087:                }
088:                Image image = (Image) images.get(key);
089:                if (image == null) {
090:                    image = createImage(desc, flags);
091:                    images.put(key, image);
092:                }
093:                return image;
094:            }
095:
096:            public Image get(Image image, int flags) {
097:                if (flags == 0)
098:                    return image;
099:                String key = getKey(image.hashCode(), flags);
100:                Image resultImage = (Image) images.get(key);
101:                if (resultImage == null) {
102:                    resultImage = createImage(image, flags);
103:                    images.put(key, resultImage);
104:                }
105:                return resultImage;
106:            }
107:
108:            private String getKey(long hashCode, int flags) {
109:                return ("" + hashCode) + ":" + flags; //$NON-NLS-1$ //$NON-NLS-2$
110:            }
111:
112:            private Image createImage(ImageDescriptor baseDesc, int flags) {
113:                if (flags == 0) {
114:                    return baseDesc.createImage();
115:                }
116:                ImageDescriptor[] lowerLeft = getLowerLeftOverlays(flags);
117:                ImageDescriptor[] upperRight = getUpperRightOverlays(flags);
118:                ImageDescriptor[] lowerRight = getLowerRightOverlays(flags);
119:                ImageDescriptor[] upperLeft = getUpperLeftOverlays(flags);
120:                OverlayIcon compDesc = new OverlayIcon(baseDesc,
121:                        new ImageDescriptor[][] { upperRight, lowerRight,
122:                                lowerLeft, upperLeft });
123:                return compDesc.createImage();
124:            }
125:
126:            private Image createImage(Image baseImage, int flags) {
127:                if (flags == 0) {
128:                    return baseImage;
129:                }
130:                ImageDescriptor[] lowerLeft = getLowerLeftOverlays(flags);
131:                ImageDescriptor[] upperRight = getUpperRightOverlays(flags);
132:                ImageDescriptor[] lowerRight = getLowerRightOverlays(flags);
133:                ImageDescriptor[] upperLeft = getUpperLeftOverlays(flags);
134:                ImageOverlayIcon compDesc = new ImageOverlayIcon(baseImage,
135:                        new ImageDescriptor[][] { upperRight, lowerRight,
136:                                lowerLeft, upperLeft });
137:                return compDesc.createImage();
138:            }
139:
140:            private ImageDescriptor[] getLowerLeftOverlays(int flags) {
141:                if ((flags & F_ERROR) != 0)
142:                    return new ImageDescriptor[] { PDEPluginImages.DESC_ERROR_CO };
143:                if ((flags & F_WARNING) != 0)
144:                    return new ImageDescriptor[] { PDEPluginImages.DESC_WARNING_CO };
145:                return null;
146:            }
147:
148:            private ImageDescriptor[] getUpperRightOverlays(int flags) {
149:                if ((flags & F_EXPORT) != 0)
150:                    return new ImageDescriptor[] { PDEPluginImages.DESC_EXPORT_CO };
151:                if ((flags & F_EDIT) != 0)
152:                    return new ImageDescriptor[] { PDEPluginImages.DESC_DOC_CO };
153:                if ((flags & F_JAVA) != 0)
154:                    return new ImageDescriptor[] { PDEPluginImages.DESC_JAVA_CO };
155:                return null;
156:            }
157:
158:            private ImageDescriptor[] getLowerRightOverlays(int flags) {
159:                if ((flags & F_JAR) != 0)
160:                    return new ImageDescriptor[] { PDEPluginImages.DESC_JAR_CO };
161:                if ((flags & F_PROJECT) != 0)
162:                    return new ImageDescriptor[] { PDEPluginImages.DESC_PROJECT_CO };
163:                return null;
164:            }
165:
166:            private ImageDescriptor[] getUpperLeftOverlays(int flags) {
167:                if ((flags & F_EXTERNAL) != 0)
168:                    return new ImageDescriptor[] { PDEPluginImages.DESC_EXTERNAL_CO };
169:                if ((flags & F_BINARY) != 0)
170:                    return new ImageDescriptor[] { PDEPluginImages.DESC_BINARY_CO };
171:                return null;
172:            }
173:
174:            public String getColumnText(Object obj, int index) {
175:                return getText(obj);
176:            }
177:
178:            public Image getColumnImage(Object obj, int index) {
179:                return getImage(obj);
180:            }
181:
182:            public Image getImageFromPlugin(String bundleID, String path) {
183:                ImageDescriptor desc = AbstractUIPlugin
184:                        .imageDescriptorFromPlugin(bundleID, path);
185:                return (desc != null) ? get(desc) : getBlankImage();
186:            }
187:
188:            public Image getImageFromPlugin(IPluginModelBase model,
189:                    String relativePath) {
190:                String platform = "platform:/plugin/"; //$NON-NLS-1$
191:                if (relativePath.startsWith(platform)) {
192:                    relativePath = relativePath.substring(platform.length());
193:                    int index = relativePath.indexOf('/');
194:                    if (index == -1)
195:                        return null;
196:                    model = PluginRegistry.findModel(relativePath.substring(0,
197:                            index));
198:                    if (model == null)
199:                        return null;
200:                    relativePath = relativePath.substring(index + 1);
201:                }
202:
203:                String location = model.getInstallLocation();
204:                if (location == null)
205:                    return null;
206:
207:                File pluginLocation = new File(location);
208:                InputStream stream = null;
209:                ZipFile jarFile = null;
210:                try {
211:                    if (pluginLocation.isDirectory()) {
212:                        File file = new File(pluginLocation, relativePath);
213:                        if (file.exists())
214:                            stream = new FileInputStream(file);
215:                        else if (relativePath.length() > 5
216:                                && relativePath.startsWith("$nl$/")) { //$NON-NLS-1$
217:                            file = new File(pluginLocation, relativePath
218:                                    .substring(5));
219:                            if (file.exists())
220:                                stream = new FileInputStream(file);
221:                        }
222:                    } else {
223:                        jarFile = new ZipFile(pluginLocation, ZipFile.OPEN_READ);
224:                        ZipEntry manifestEntry = jarFile.getEntry(relativePath);
225:                        if (manifestEntry != null) {
226:                            stream = jarFile.getInputStream(manifestEntry);
227:                        } else if (relativePath.length() > 5
228:                                && relativePath.startsWith("$nl$/")) { //$NON-NLS-1$
229:                            manifestEntry = jarFile.getEntry(relativePath
230:                                    .substring(5));
231:                            if (manifestEntry != null) {
232:                                stream = jarFile.getInputStream(manifestEntry);
233:                            }
234:                        }
235:                    }
236:                    if (stream != null) {
237:                        ImageDescriptor desc = ImageDescriptor
238:                                .createFromImageData(new ImageData(stream));
239:                        return get(desc);
240:                    }
241:                } catch (FileNotFoundException e) {
242:                } catch (IOException e) {
243:                } finally {
244:                    try {
245:                        if (stream != null)
246:                            stream.close();
247:                        if (jarFile != null)
248:                            jarFile.close();
249:                    } catch (IOException e) {
250:                    }
251:                }
252:                return getBlankImage();
253:            }
254:
255:            public Image getBlankImage() {
256:                if (fBlankImage == null)
257:                    fBlankImage = ImageDescriptor.getMissingImageDescriptor()
258:                            .createImage();
259:                return fBlankImage;
260:            }
261:        }
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