com.vectrace.MercurialEclipse.repository.actions.RemoveRootAction.java Source code

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Here is the source code for com.vectrace.MercurialEclipse.repository.actions.RemoveRootAction.java

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/*******************************************************************************
 * Copyright (c) 2003, 2006 Subclipse project and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Subclipse project committers - initial API and implementation
 *     Bastian Doetsch              - adaptation
 *     Andrei Loskutov - bug fixes
 ******************************************************************************/
package com.vectrace.MercurialEclipse.repository.actions;

import java.util.ArrayList;
import java.util.Iterator;

import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.actions.SelectionListenerAction;

import com.vectrace.MercurialEclipse.MercurialEclipsePlugin;
import com.vectrace.MercurialEclipse.model.IHgRepositoryLocation;

/**
 * RemoveRootAction removes a repository
 */
public class RemoveRootAction extends SelectionListenerAction {
    private IStructuredSelection selection;

    public RemoveRootAction(Shell shell) {
        super("Remove");
        setImageDescriptor(MercurialEclipsePlugin.getImageDescriptor("rem_co.gif"));
    }

    /**
     * Returns the selected remote files
     */
    protected IHgRepositoryLocation[] getSelectedRemoteRoots() {
        ArrayList<IHgRepositoryLocation> resources = new ArrayList<IHgRepositoryLocation>();
        if (selection != null && !selection.isEmpty()) {
            Iterator<IHgRepositoryLocation> elements = selection.iterator();
            while (elements.hasNext()) {
                Object next = MercurialEclipsePlugin.getAdapter(elements.next(), IHgRepositoryLocation.class);
                if (next instanceof IHgRepositoryLocation) {
                    resources.add((IHgRepositoryLocation) next);
                }
            }
        }
        return resources.toArray(new IHgRepositoryLocation[resources.size()]);
    }

    @Override
    public void run() {
        IHgRepositoryLocation[] roots = getSelectedRemoteRoots();
        if (roots.length == 0) {
            return;
        }
        boolean confirm = MessageDialog.openConfirm(null, "Mercurial Repositories",
                "Remove repository (all authentication data will be lost)?");
        if (!confirm) {
            return;
        }
        for (IHgRepositoryLocation repo : roots) {
            MercurialEclipsePlugin.getRepoManager().disposeRepository(repo);
        }
    }

    /**
     * updates the selection. this selection will be used during run returns
     * true if action can be enabled
     */
    @Override
    protected boolean updateSelection(IStructuredSelection sel) {
        this.selection = sel;

        IHgRepositoryLocation[] roots = getSelectedRemoteRoots();
        return roots.length > 0;
    }

}