org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/repository/tree/command/CreateBranchCommand.java

   1 /*******************************************************************************
   2  * Copyright (c) 2010 SAP AG.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *    Mathias Kinzler (SAP AG) - initial implementation
  10  *    Dariusz Luksza (dariusz@luksza.org - set action disabled when HEAD cannot
  11  *                                                                              be resolved
  12  *******************************************************************************/
  13 package org.eclipse.egit.ui.internal.repository.tree.command;
  14
  15 import java.io.IOException;
  16
  17 import org.eclipse.core.commands.ExecutionEvent;
  18 import org.eclipse.core.commands.ExecutionException;
  19 import org.eclipse.egit.ui.Activator;
  20 import org.eclipse.egit.ui.internal.repository.CreateBranchWizard;
  21 import org.eclipse.egit.ui.internal.repository.tree.RepositoryTreeNode;
  22 import org.eclipse.egit.ui.internal.repository.tree.RepositoryTreeNodeType;
  23 import org.eclipse.jface.wizard.WizardDialog;
  24 import org.eclipse.jgit.lib.Ref;
  25 import org.eclipse.jgit.revwalk.RevCommit;
  26 import org.eclipse.jgit.revwalk.RevWalk;
  27
  28 /**
  29  * Creates a branch using a simple dialog.
  30  * <p>
  31  * This is context-sensitive as it suggests the currently selected branch or (if
  32  * not started from a branch) the currently checked-out branch as source branch.
  33  * The user can override this suggestion.
  34  */
  35 public class CreateBranchCommand extends
  36                 RepositoriesViewCommandHandler<RepositoryTreeNode> {
  37         @Override
  38         public Object execute(ExecutionEvent event) throws ExecutionException {
  39                 final RepositoryTreeNode node = getSelectedNodes(event).get(0);
  40
  41                 if (node.getType() == RepositoryTreeNodeType.ADDITIONALREF) {
  42                         Ref ref = (Ref) node.getObject();
  43                         try (RevWalk rw = new RevWalk(node.getRepository())) {
  44                                 RevCommit baseCommit = rw
  45                                                 .parseCommit(ref.getLeaf().getObjectId());
  46                                 WizardDialog dlg = new WizardDialog(
  47                                                 getShell(event),
  48                                                 new CreateBranchWizard(node.getRepository(), baseCommit.name()));
  49                                 dlg.setHelpAvailable(false);
  50                                 dlg.open();
  51                         } catch (IOException e) {
  52                                 Activator.handleError(e.getMessage(), e, true);
  53                         }
  54                         return null;
  55                 }
  56                 String base = null;
  57                 if (node.getObject() instanceof Ref)
  58                         base = ((Ref) node.getObject()).getName();
  59                 new WizardDialog(getShell(event), new CreateBranchWizard(node
  60                                 .getRepository(), base)).open();
  61                 return null;
  62         }
  63
  64         @Override
  65         public boolean isEnabled() {
  66                 return selectedRepositoryHasHead();
  67         }
  68
  69 }