org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/GitLabelProvider.java

   1 /*******************************************************************************
   2  * Copyright (c) 2011, 2018 Benjamin Muskalla and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License 2.0
   5  * which accompanies this distribution, and is available at
   6  * https://www.eclipse.org/legal/epl-2.0/
   7  *
   8  * SPDX-License-Identifier: EPL-2.0
   9  *
  10  * Contributors:
  11  *     Benjamin Muskalla <bmuskalla@tasktop.com> - initial API and implementation
  12  *******************************************************************************/
  13 package org.eclipse.egit.ui.internal;
  14
  15 import org.eclipse.core.resources.IResource;
  16 import org.eclipse.egit.core.AdapterUtils;
  17 import org.eclipse.egit.ui.internal.clone.ProjectRecord;
  18 import org.eclipse.egit.ui.internal.commit.RepositoryCommit;
  19 import org.eclipse.egit.ui.internal.repository.tree.RefNode;
  20 import org.eclipse.egit.ui.internal.repository.tree.RepositoryTreeNodeType;
  21 import org.eclipse.egit.ui.internal.synchronize.model.GitModelBlob;
  22 import org.eclipse.egit.ui.internal.synchronize.model.GitModelCache;
  23 import org.eclipse.egit.ui.internal.synchronize.model.GitModelCommit;
  24 import org.eclipse.egit.ui.internal.synchronize.model.GitModelRepository;
  25 import org.eclipse.egit.ui.internal.synchronize.model.GitModelTree;
  26 import org.eclipse.egit.ui.internal.synchronize.model.GitModelWorkingTree;
  27 import org.eclipse.jface.resource.JFaceResources;
  28 import org.eclipse.jface.resource.LocalResourceManager;
  29 import org.eclipse.jface.resource.ResourceManager;
  30 import org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.IStyledLabelProvider;
  31 import org.eclipse.jface.viewers.LabelProvider;
  32 import org.eclipse.jface.viewers.StyledString;
  33 import org.eclipse.jgit.lib.Constants;
  34 import org.eclipse.jgit.lib.Ref;
  35 import org.eclipse.jgit.lib.Repository;
  36 import org.eclipse.swt.graphics.Image;
  37 import org.eclipse.ui.PlatformUI;
  38 import org.eclipse.ui.ide.IDE.SharedImages;
  39 import org.eclipse.ui.model.WorkbenchLabelProvider;
  40
  41 /**
  42  * Common label provider for git related model objects
  43  *
  44  */
  45 public class GitLabelProvider extends LabelProvider implements
  46                 IStyledLabelProvider {
  47
  48         private ResourceManager imageCache;
  49
  50         private LabelProvider workbenchLabelProvider;
  51
  52         @Override
  53         public String getText(Object element) {
  54                 return GitLabels.getPlainShortLabelExtended(element);
  55         }
  56
  57         @Override
  58         public Image getImage(Object element) {
  59                 if (element instanceof Repository) {
  60                         return UIIcons.getImage(getImageCache(),
  61                                         RepositoryTreeNodeType.REPO.getIcon());
  62                 }
  63
  64                 if (element instanceof RefNode) {
  65                         return getRefIcon(((RefNode) element).getObject());
  66                 }
  67
  68                 if (element instanceof Ref) {
  69                         return getRefIcon((Ref) element);
  70                 }
  71
  72                 if (element instanceof GitModelBlob || element instanceof GitModelTree) {
  73                         Object adapter = AdapterUtils.adapt(element, IResource.class);
  74                         return getWorkbenchLabelProvider().getImage(adapter);
  75                 }
  76
  77                 if (element instanceof GitModelCommit
  78                                 || element instanceof GitModelCache
  79                                 || element instanceof GitModelWorkingTree
  80                                 || element instanceof RepositoryCommit)
  81                         return getChangesetIcon();
  82
  83                 if (element instanceof GitModelRepository)
  84                         return getImage(((GitModelRepository) element).getRepository());
  85
  86                 if (element instanceof ProjectRecord)
  87                         return PlatformUI.getWorkbench().getSharedImages()
  88                                         .getImage(SharedImages.IMG_OBJ_PROJECT);
  89
  90                 return super.getImage(element);
  91         }
  92
  93         @Override
  94         public StyledString getStyledText(Object element) {
  95                 return GitLabels.getStyledLabelExtendedSafe(element);
  96         }
  97
  98         /**
  99          * Returns the common icon for a changeset.
 100          *
 101          * @return an image
 102          */
 103         protected Image getChangesetIcon() {
 104                 return getImageCache().createImage(UIIcons.CHANGESET);
 105         }
 106
 107         private Image getRefIcon(Ref ref) {
 108                 String name = ref.getName();
 109                 if (name.startsWith(Constants.R_HEADS)
 110                                 || name.startsWith(Constants.R_REMOTES)) {
 111                         return UIIcons.getImage(getImageCache(),
 112                                         RepositoryTreeNodeType.REF.getIcon());
 113                 } else if (name.startsWith(Constants.R_TAGS)) {
 114                         return UIIcons.getImage(getImageCache(),
 115                                         RepositoryTreeNodeType.TAG.getIcon());
 116                 } else {
 117                         return UIIcons.getImage(getImageCache(),
 118                                         RepositoryTreeNodeType.ADDITIONALREF.getIcon());
 119                 }
 120         }
 121
 122         private LabelProvider getWorkbenchLabelProvider() {
 123                 if (workbenchLabelProvider == null)
 124                         workbenchLabelProvider = new WorkbenchLabelProvider();
 125                 return workbenchLabelProvider;
 126         }
 127
 128         private ResourceManager getImageCache() {
 129                 if (imageCache == null)
 130                         imageCache = new LocalResourceManager(JFaceResources.getResources());
 131                 return imageCache;
 132         }
 133
 134         @Override
 135         public void dispose() {
 136                 super.dispose();
 137                 if (imageCache != null)
 138                         imageCache.dispose();
 139                 if(workbenchLabelProvider != null)
 140                         workbenchLabelProvider.dispose();
 141         }
 142 }