patchSelect all changes in repository for commit by default

diff --git a/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/actions/RepositoryAction.java b/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/actions/RepositoryAction.java
index c4e3256..8c250ca 100644
--- a/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/actions/RepositoryAction.java
+++ b/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/actions/RepositoryAction.java
@@ -13,6 +13,8 @@
 import java.util.Set;
 
 import org.eclipse.core.resources.IProject;
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.jface.action.IAction;
 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.team.internal.ui.actions.TeamAction;
@@ -36,6 +38,54 @@ public void execute(IAction action) {
 	}
 
 	/**
+	 * @return the projects hosting the selected resources
+	 */
+	protected IProject[] getProjectsForSelectedResources() {
+		Set<IProject> ret = new HashSet<IProject>();
+		for (IResource resource : (IResource[])getSelectedAdaptables(getSelection(), IResource.class))
+			ret.add(resource.getProject());
+		return ret.toArray(new IProject[ret.size()]);
+	}
+
+	/**
+	 * @param projects
+	 *            a list of projects
+	 * @return the repositories that projects map to iff all projects are mapped
+	 */ 
+	protected Repository[] getRepositoriesFor(final IProject[] projects) {
+		Set<Repository> ret = new HashSet<Repository>();
+		for (IProject project : projects) {
+			RepositoryMapping repositoryMapping = RepositoryMapping.getMapping(project);
+			if (repositoryMapping == null)
+				return new Repository[0];
+			ret.add(repositoryMapping.getRepository());
+		}
+		return ret.toArray(new Repository[ret.size()]);
+	}
+	
+	/**
+	 * List the projects with selected resources, if all projects are connected
+	 * to a Git repository.
+	 * 
+	 * @return the tracked projects affected by the current resource selection
+	 */
+	public IProject[] getProjectsInRepositoryOfSelectedResources() {
+		Set<IProject> ret = new HashSet<IProject>();
+		Repository[] repositories = getRepositoriesFor(getProjectsForSelectedResources());
+		final IProject[] projects = ResourcesPlugin.getWorkspace().getRoot().getProjects();
+		for (IProject project : projects) {
+			RepositoryMapping mapping = RepositoryMapping.getMapping(project);
+			for (Repository repository : repositories) {
+				if (mapping != null && mapping.getRepository() == repository) {
+					ret.add(project);
+					break;
+				}
+			}
+		}
+		return ret.toArray(new IProject[ret.size()]);
+	}
+
+	/**
 	 * Figure out which repository to use. All selected
 	 * resources must map to the same Git repository.
 	 *

diff --git a/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/actions/CommitAction.java b/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/actions/CommitAction.java
index 8db701c..d703048 100644
--- a/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/actions/CommitAction.java
+++ b/org.spearce.egit.ui/src/org/spearce/egit/ui/internal/actions/CommitAction.java
@@ -68,7 +68,7 @@ public void run(IAction act) {
 			return;
 		}
 
-		Repository[] repos = getRepositories();
+		Repository[] repos = getRepositoriesFor(getProjectsForSelectedResources());
 		amendAllowed = repos.length == 1;
 		for (Repository repo : repos) {
 			if (!repo.getRepositoryState().canCommit()) {
@@ -124,7 +124,7 @@ private void resetState() {
 	}
 
 	private void loadPreviousCommit() {
-		IProject project = getSelectedProjects()[0];
+		IProject project = getProjectsForSelectedResources()[0];
 
 		Repository repo = RepositoryMapping.getMapping(project).getRepository();
 		try {
@@ -313,21 +313,20 @@ private void writeTreeWithSubTrees(Tree tree) throws TeamException {
 	}
 
 	private void buildIndexHeadDiffList() throws IOException {
-		for (IProject project : getSelectedProjects()) {
+		for (IProject project : getProjectsInRepositoryOfSelectedResources()) {
 			RepositoryMapping repositoryMapping = RepositoryMapping.getMapping(project);
-			if (repositoryMapping != null) {
-				Repository repository = repositoryMapping.getRepository();
-				Tree head = repository.mapTree("HEAD");
-				GitIndex index = repository.getIndex();
-				IndexDiff indexDiff = new IndexDiff(head, index);
-				indexDiff.diff();
-
-				includeList(project, indexDiff.getAdded(), indexChanges);
-				includeList(project, indexDiff.getChanged(), indexChanges);
-				includeList(project, indexDiff.getRemoved(), indexChanges);
-				includeList(project, indexDiff.getMissing(), notIndexed);
-				includeList(project, indexDiff.getModified(), notIndexed);
-			}
+			assert repositoryMapping != null;
+			Repository repository = repositoryMapping.getRepository();
+			Tree head = repository.mapTree("HEAD");
+			GitIndex index = repository.getIndex();
+			IndexDiff indexDiff = new IndexDiff(head, index);
+			indexDiff.diff();
+
+			includeList(project, indexDiff.getAdded(), indexChanges);
+			includeList(project, indexDiff.getChanged(), indexChanges);
+			includeList(project, indexDiff.getRemoved(), indexChanges);
+			includeList(project, indexDiff.getMissing(), notIndexed);
+			includeList(project, indexDiff.getModified(), notIndexed);
 		}
 	}
 
@@ -395,7 +394,7 @@ private boolean isChanged(RepositoryMapping map, IFile resource) {
 
 	@Override
 	public boolean isEnabled() {
-		return getRepositories().length > 0;
+		return getProjectsInRepositoryOfSelectedResources().length > 0;
 	}
 
 }