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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Eclipse Public License, Version 1.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.eclipse.org/org/documents/epl-v10.php
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.ide.eclipse.adt.internal.project;
     18 
     19 import com.android.SdkConstants;
     20 import com.android.ide.eclipse.adt.AdtConstants;
     21 import com.android.ide.eclipse.adt.AdtPlugin;
     22 
     23 import org.eclipse.core.resources.IFolder;
     24 import org.eclipse.core.resources.IProject;
     25 import org.eclipse.core.resources.IResource;
     26 import org.eclipse.core.runtime.CoreException;
     27 import org.eclipse.jface.resource.ImageDescriptor;
     28 import org.eclipse.jface.viewers.IDecoration;
     29 import org.eclipse.jface.viewers.ILabelDecorator;
     30 import org.eclipse.jface.viewers.ILabelProviderListener;
     31 import org.eclipse.jface.viewers.ILightweightLabelDecorator;
     32 
     33 /**
     34  * A {@link ILabelDecorator} associated with an org.eclipse.ui.decorators extension.
     35  * This is used to add android icons in some special folders in the package explorer.
     36  */
     37 public class FolderDecorator implements ILightweightLabelDecorator {
     38 
     39     private ImageDescriptor mDescriptor;
     40 
     41     public FolderDecorator() {
     42         mDescriptor = AdtPlugin.getImageDescriptor("/icons/android_project.png"); //$NON-NLS-1$
     43     }
     44 
     45     @Override
     46     public void decorate(Object element, IDecoration decoration) {
     47         if (element instanceof IFolder) {
     48             IFolder folder = (IFolder)element;
     49 
     50             // get the project and make sure this is an android project
     51             IProject project = folder.getProject();
     52             if (project == null || !project.exists() || !folder.exists()) {
     53                 return;
     54             }
     55 
     56             try {
     57                 if (project.hasNature(AdtConstants.NATURE_DEFAULT)) {
     58                     // check the folder is directly under the project.
     59                     if (folder.getParent().getType() == IResource.PROJECT) {
     60                         String name = folder.getName();
     61                         if (name.equals(SdkConstants.FD_ASSETS)) {
     62                             doDecoration(decoration, null);
     63                         } else if (name.equals(SdkConstants.FD_RESOURCES)) {
     64                             doDecoration(decoration, null);
     65                         } else if (name.equals(SdkConstants.FD_GEN_SOURCES)) {
     66                             doDecoration(decoration, " [Generated Java Files]");
     67                         } else if (name.equals(SdkConstants.FD_NATIVE_LIBS)) {
     68                             doDecoration(decoration, null);
     69                         } else if (name.equals(SdkConstants.FD_OUTPUT)) {
     70                             doDecoration(decoration, null);
     71                         }
     72                     }
     73                 }
     74             } catch (CoreException e) {
     75                 // log the error
     76                 AdtPlugin.log(e, "Unable to get nature of project '%s'.", project.getName());
     77             }
     78         }
     79     }
     80 
     81     public void doDecoration(IDecoration decoration, String suffix) {
     82         decoration.addOverlay(mDescriptor, IDecoration.TOP_LEFT);
     83 
     84         if (suffix != null) {
     85             decoration.addSuffix(suffix);
     86         }
     87     }
     88 
     89     @Override
     90     public boolean isLabelProperty(Object element, String property) {
     91         // Property change do not affect the label
     92         return false;
     93     }
     94 
     95     @Override
     96     public void addListener(ILabelProviderListener listener) {
     97         // No state change will affect the rendering.
     98     }
     99 
    100     @Override
    101     public void removeListener(ILabelProviderListener listener) {
    102         // No state change will affect the rendering.
    103     }
    104 
    105     @Override
    106     public void dispose() {
    107         // nothing to dispose
    108     }
    109 }
    110