[EGIT PATCH 07/11] Add binding for name of the current branch

["Tor Arne Vestbø" <torarnv@gmail.com>]

This is an example of how to add more bindings to the
decoration preferences, and how they are implemented in
the decorator.

Signed-off-by: Tor Arne Vestbø <torarnv@gmail.com>
---
 .../src/org/spearce/egit/ui/UIText.java            |    3 ++
 .../decorators/GitLightweightDecorator.java        |   26 ++++++++++++++++---
 .../internal/decorators/IDecoratableResource.java  |    8 ++++++
 .../preferences/GitDecoratorPreferencePage.java    |   21 +++++++++++----
 .../src/org/spearce/egit/ui/uitext.properties      |    3 +-
 5 files changed, 50 insertions(+), 11 deletions(-)

diff --git a/org.spearce.egit.ui/src/org/spearce/egit/ui/UIText.java b/org.spearce.egit.ui/src/org/spearce/egit/ui/UIText.java
index 23498c8..f939558 100644
--- a/org.spearce.egit.ui/src/org/spearce/egit/ui/UIText.java
+++ b/org.spearce.egit.ui/src/org/spearce/egit/ui/UIText.java
@@ -956,6 +956,9 @@
 	public static String DecoratorPreferencesPage_nameResourceVariable;
 
 	/** */
+	public static String DecoratorPreferencesPage_bindingBranchName;
+
+	/** */
 	public static String DecoratorPreferencesPage_selectFormats;
 
 	/** */
diff --git a/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/decorators/GitLightweightDecorator.java b/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/decorators/GitLightweightDecorator.java
index 85b9173..265d5a3 100644
--- a/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/decorators/GitLightweightDecorator.java
+++ b/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/decorators/GitLightweightDecorator.java
@@ -13,6 +13,7 @@
 
 package org.spearce.egit.ui.internal.decorators;
 
+import java.io.IOException;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -44,6 +45,7 @@
 import org.eclipse.team.ui.TeamUI;
 import org.eclipse.ui.IContributorResourceAdapter;
 import org.eclipse.ui.PlatformUI;
+import org.spearce.egit.core.GitException;
 import org.spearce.egit.core.internal.util.ExceptionCollector;
 import org.spearce.egit.core.project.GitProjectData;
 import org.spearce.egit.core.project.RepositoryChangeListener;
@@ -157,17 +159,26 @@ public void decorate(Object element, IDecoration decoration) {
 		if (activator == null)
 			return;
 
-		DecorationHelper helper = new DecorationHelper(activator
-				.getPreferenceStore());
-		helper.decorate(decoration, new DecoratableResourceAdapter(resource));
+		try {
+			DecorationHelper helper = new DecorationHelper(activator
+					.getPreferenceStore());
+			helper.decorate(decoration,
+					new DecoratableResourceAdapter(resource));
+		} catch (IOException e) {
+			handleException(resource, GitException.wrapException(e));
+		}
 	}
 
 	private class DecoratableResourceAdapter implements IDecoratableResource {
 
 		private IResource resource;
+		private String branch;
 
-		public DecoratableResourceAdapter(IResource resourceToWrap) {
+		public DecoratableResourceAdapter(IResource resourceToWrap) throws IOException {
 			resource = resourceToWrap;
+			RepositoryMapping mapping = RepositoryMapping.getMapping(resource);
+			Repository repository = mapping.getRepository();
+			branch = repository.getBranch();
 		}
 
 		public String getName() {
@@ -177,6 +188,10 @@ public String getName() {
 		public int getType() {
 			return resource.getType();
 		}
+
+		public String getBranch() {
+			return branch;
+		}
 	}
 
 	/**
@@ -192,6 +207,8 @@ public int getType() {
 
 		/** */
 		public static final String BINDING_RESOURCE_NAME = "name"; //$NON-NLS-1$
+		/** */
+		public static final String BINDING_BRANCH_NAME = "branch"; //$NON-NLS-1$
 
 		/**
 		 * Constructs a decorator using the rules from the given
@@ -234,6 +251,7 @@ public void decorate(IDecoration decoration,
 
 			Map<String, String> bindings = new HashMap<String, String>();
 			bindings.put(BINDING_RESOURCE_NAME, resource.getName());
+			bindings.put(BINDING_BRANCH_NAME, resource.getBranch());
 
 			decorate(decoration, format, bindings);
 		}
diff --git a/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/decorators/IDecoratableResource.java b/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/decorators/IDecoratableResource.java
index 8d6c741..6b36e0e 100644
--- a/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/decorators/IDecoratableResource.java
+++ b/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/decorators/IDecoratableResource.java
@@ -28,4 +28,12 @@
 	 * @return the name of the resource
 	 */
 	String getName();
+
+	/**
+	 * Gets the current branch of the resource if applicable
+	 * 
+	 * @return the name of the current branch, or <code>null</code> if not
+	 *         applicable
+	 */
+	String getBranch();
 }
diff --git a/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/preferences/GitDecoratorPreferencePage.java b/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/preferences/GitDecoratorPreferencePage.java
index 2ef0292..2a1a3a8 100644
--- a/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/preferences/GitDecoratorPreferencePage.java
+++ b/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/preferences/GitDecoratorPreferencePage.java
@@ -94,10 +94,10 @@
 
 	static {
 		final PreviewResource project = new PreviewResource(
-				"Project", IResource.PROJECT); //$NON-NLS-1$1
+				"Project", IResource.PROJECT, "master"); //$NON-NLS-1$1
 		final ArrayList<PreviewResource> children = new ArrayList<PreviewResource>();
-		children.add(new PreviewResource("folder", IResource.FOLDER)); //$NON-NLS-1$
-		children.add(new PreviewResource("file.txt", IResource.FILE)); //$NON-NLS-1$
+		children.add(new PreviewResource("folder", IResource.FOLDER, null)); //$NON-NLS-1$
+		children.add(new PreviewResource("file.txt", IResource.FILE, null)); //$NON-NLS-1$
 		project.children = children;
 		PREVIEW_FILESYSTEM_ROOT = Collections.singleton(project);
 	}
@@ -488,6 +488,8 @@ private Map getProjectBindingDescriptions() {
 		Map<String, String> bindings = new HashMap<String, String>();
 		bindings.put(DecorationHelper.BINDING_RESOURCE_NAME,
 				UIText.DecoratorPreferencesPage_nameResourceVariable);
+		bindings.put(DecorationHelper.BINDING_BRANCH_NAME,
+				UIText.DecoratorPreferencesPage_bindingBranchName);
 		return bindings;
 	}
 
@@ -510,8 +512,8 @@ private void updatePreview() {
 		private DecorationHelper fHelper;
 
 		public Preview(Composite composite) {
-			reloadDecorationHelper(); // Has to happen before the tree control
-										// is constructed
+			// Has to happen before the tree control is constructed
+			reloadDecorationHelper();
 			SWTUtils.createLabel(composite,
 					UIText.DecoratorPreferencesPage_preview);
 			fImageCache = new LocalResourceManager(JFaceResources
@@ -635,12 +637,15 @@ private PreviewDecoration getDecoration(Object element) {
 	private static class PreviewResource implements IDecoratableResource {
 		public final String name;
 
+		public final String branch;
+
 		public final int type;
 
 		public Collection children;
 
-		public PreviewResource(String name, int type) {
+		public PreviewResource(String name, int type, String branch) {
 			this.name = name;
+			this.branch = branch;
 			this.type = type;
 			this.children = Collections.EMPTY_LIST;
 		}
@@ -652,6 +657,10 @@ public String getName() {
 		public int getType() {
 			return type;
 		}
+
+		public String getBranch() {
+			return branch;
+		}
 	}
 
 	private class PreviewDecoration implements IDecoration {
diff --git a/org.spearce.egit.ui/src/org/spearce/egit/ui/uitext.properties b/org.spearce.egit.ui/src/org/spearce/egit/ui/uitext.properties
index 4a0a387..58cb9e6 100644
--- a/org.spearce.egit.ui/src/org/spearce/egit/ui/uitext.properties
+++ b/org.spearce.egit.ui/src/org/spearce/egit/ui/uitext.properties
@@ -354,10 +354,11 @@ DecoratorPreferencesPage_folderFormatLabel=F&olders:
 DecoratorPreferencesPage_projectFormatLabel=&Projects:
 DecoratorPreferencesPage_fileFormatDefault={name}
 DecoratorPreferencesPage_folderFormatDefault={name}
-DecoratorPreferencesPage_projectFormatDefault={name}
+DecoratorPreferencesPage_projectFormatDefault={name} [{branch}]
 DecoratorPreferencesPage_labelDecorationsLink=See <a>''{0}''</a> to enable or disable Git decorations.
 DecoratorPreferencesPage_generalTabFolder=&General
 DecoratorPreferencesPage_nameResourceVariable=name of the resource being decorated
+DecoratorPreferencesPage_bindingBranchName=current branch of the project
 DecoratorPreferencesPage_selectFormats=Select the format for file, folders, and project text labels:
 DecoratorPreferencesPage_selectVariablesToAdd=Select the &variables to add to the decoration format:
 DecoratorPreferencesPage_textLabel=T&ext Decorations
-- 
1.6.1.2.309.g2ea3