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/*******************************************************************************
* Copyright (c) 2006-2011 Gluster, Inc. <http://www.gluster.com>
* This file is part of Gluster Management Console.
*
* Gluster Management Console is free software; you can redistribute
* it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* Gluster Management Console is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see
* <http://www.gnu.org/licenses/>.
*******************************************************************************/
package org.gluster.storage.management.console.actions;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowActionDelegate;
import org.eclipse.ui.internal.UIPlugin;
import org.gluster.storage.management.console.utils.GlusterLogger;
import org.gluster.storage.management.core.model.Entity;
/**
* All action delegates in the application should extend from this class. It provides common functionality of grabbing
* the Window object on initialization and extracting the selected entity in case of selection change on the navigation
* tree.
*/
@SuppressWarnings("restriction")
public abstract class AbstractActionDelegate implements IWorkbenchWindowActionDelegate {
protected IWorkbenchWindow window;
protected static final GlusterLogger logger = GlusterLogger.getInstance();
// the latest selected entity
protected Entity selectedEntity;
@Override
public void run(final IAction action) {
try {
performAction(action);
} catch (final Exception e) {
final String actionDesc = action.getDescription();
logger.error("Exception while running action [" + actionDesc + "]", e);
showErrorDialog(actionDesc, e.getMessage());
}
}
abstract protected void performAction(final IAction action);
@Override
public void selectionChanged(IAction action, ISelection selection) {
if (selection instanceof StructuredSelection) {
Entity selectedEntity = (Entity) ((StructuredSelection) selection).getFirstElement();
if (this.selectedEntity == selectedEntity) {
// entity selection has not changed. do nothing.
return;
}
if (selectedEntity != null) {
this.selectedEntity = selectedEntity;
}
}
}
@Override
public void init(IWorkbenchWindow window) {
this.window = window;
}
protected Shell getShell() {
return getWindow().getShell();
}
protected IWorkbenchWindow getWindow() {
return window == null ? UIPlugin.getDefault().getWorkbench().getActiveWorkbenchWindow() : window;
}
protected void showInfoDialog(final String title, final String message) {
MessageDialog.openInformation(getShell(), title, message);
}
protected void showWarningDialog(final String title, final String message) {
MessageDialog.openWarning(getShell(), title, message);
}
protected void showErrorDialog(final String title, final String message) {
MessageDialog.openError(getShell(), title, message);
}
protected boolean showConfirmDialog(final String title, final String message) {
return MessageDialog.openQuestion(getShell(), title, message);
}
}
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