org.eclipse.debug.internal.ui.views.memory.ResetMemoryBlockAction.java Source code

Introduction

Here is the source code for org.eclipse.debug.internal.ui.views.memory.ResetMemoryBlockAction.java

Source

/*******************************************************************************
 * Copyright (c) 2005, 2007 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

package org.eclipse.debug.internal.ui.views.memory;

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

import org.eclipse.debug.core.model.IMemoryBlock;
import org.eclipse.debug.internal.ui.preferences.IDebugPreferenceConstants;
import org.eclipse.debug.ui.DebugUITools;
import org.eclipse.debug.ui.memory.IMemoryRendering;
import org.eclipse.debug.ui.memory.IMemoryRenderingContainer;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IViewActionDelegate;
import org.eclipse.ui.IViewPart;

/**
 * The popup menu action for a memory rendering used to reset the current selection
 * to the default first memory position
 * 
 * @since 3.2.0
 */
public class ResetMemoryBlockAction implements IViewActionDelegate {

    private IViewPart fView;
    private ArrayList fSelectedMB = new ArrayList();

    /* (non-Javadoc)
     * @see org.eclipse.ui.IViewActionDelegate#init(org.eclipse.ui.IViewPart)
     */
    public void init(IViewPart view) {
        fView = view;
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
     */
    public void run(IAction action) {
        if (fSelectedMB.isEmpty()) {
            return;
        }
        boolean resetVisible = false;
        String resetPref = DebugUITools.getPreferenceStore()
                .getString(IDebugPreferenceConstants.PREF_RESET_MEMORY_BLOCK);
        if (resetPref.equals(IDebugPreferenceConstants.RESET_VISIBLE)) {
            resetVisible = true;
        }
        Iterator iter = fSelectedMB.iterator();
        while (iter.hasNext()) {
            IMemoryBlock mb = (IMemoryBlock) iter.next();
            if (fView instanceof MemoryView) {
                MemoryView memView = (MemoryView) fView;
                IMemoryRenderingContainer[] containers = memView.getMemoryRenderingContainers();

                for (int i = 0; i < containers.length; i++) {
                    if (containers[i] instanceof RenderingViewPane) {
                        ((RenderingViewPane) containers[i]).resetRenderings(mb, resetVisible);
                    }
                }
            }
        }
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction, org.eclipse.jface.viewers.ISelection)
     */
    public void selectionChanged(IAction action, ISelection selection) {
        action.setEnabled(!selection.isEmpty());
        if (selection instanceof IStructuredSelection) {
            IStructuredSelection strucSel = (IStructuredSelection) selection;
            Object[] objs = strucSel.toArray();
            fSelectedMB.clear();
            for (int i = 0; i < objs.length; i++) {
                if (objs[i] instanceof IMemoryBlock)
                    fSelectedMB.add(objs[i]);
                if (objs[i] instanceof IMemoryRendering)
                    fSelectedMB.add(((IMemoryRendering) objs[i]).getMemoryBlock());
            }
        }
    }

}