/*
 * Copyright 2010 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.drools.eclipse.debug.actions;


import org.drools.eclipse.DroolsEclipsePlugin;
import org.drools.eclipse.DroolsPluginImages;
import org.drools.eclipse.debug.DroolsDebugEventHandlerView;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.swt.custom.BusyIndicator;

/**
 * Action to toggle the display of the logical structure of variables
 * that are shown in the tree.
 */
public class ShowLogicalStructureAction extends Action {
    
    private DroolsDebugEventHandlerView view;

    public ShowLogicalStructureAction(DroolsDebugEventHandlerView view) {
        super(null, IAction.AS_CHECK_BOX);
        this.view = view;
        setToolTipText("Show Logical Structure");
        setImageDescriptor(DroolsPluginImages.getImageDescriptor(DroolsPluginImages.IMG_LOGICAL));
        setDisabledImageDescriptor(DroolsPluginImages.getImageDescriptor(DroolsPluginImages.IMG_LOGICAL_DISABLED));
        setId(DroolsEclipsePlugin.getUniqueIdentifier() + ".ShowLogicalStructureAction");
    }

    public void run() {
        valueChanged(isChecked());
    }

    private void valueChanged(boolean on) {
        if (!view.isAvailable()) {
            return;
        }
        view.setShowLogicalStructure(on);
        BusyIndicator.showWhile(view.getViewer().getControl().getDisplay(), new Runnable() {
            public void run() {
                view.getViewer().refresh();
            }
        });
    }
}