com.nokia.tools.variant.resourcelibrary.actions.DeleteResourceAction.java Source code

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Here is the source code for com.nokia.tools.variant.resourcelibrary.actions.DeleteResourceAction.java

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/*
 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 
 * All rights reserved.
 * This component and the accompanying materials are made available
 * under the terms of "Eclipse Public License v1.0"
 * which accompanies this distribution, and is available
 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
 * 
 * Initial Contributors:
 * Nokia Corporation - Initial contribution
 * 
 * Contributors:
 * 
 * Description: This file is part of com.nokia.tools.variant.resourcelibrary component.
 */

package com.nokia.tools.variant.resourcelibrary.actions;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.CommandStack;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.actions.BaseSelectionListenerAction;

import com.nokia.tools.variant.common.ui.utils.SWTUtil;
import com.nokia.tools.variant.resourcelibrary.Activator;
import com.nokia.tools.variant.resourcelibrary.handlers.commands.RemoveCommand;
import com.nokia.tools.variant.resourcelibrary.handlers.commands.ResourceLibraryCommandHelper;
import com.nokia.tools.variant.resourcelibrary.model.FileSystemElement;
import com.nokia.tools.variant.resourcelibrary.views.IResourceLibraryPage;
import com.nokia.tools.variant.resourcelibrary.views.ResourceStorage;

public class DeleteResourceAction extends BaseSelectionListenerAction {
    public static final String DELETE_CONFIRMATION_STRING = "Delete selected resources?";

    private IResourceLibraryPage page;

    public DeleteResourceAction(IResourceLibraryPage page) {
        super("Delete");
        setImageDescriptor(Activator.getImageDescriptor("icons/delete_16_tlb.png"));
        this.page = page;
    }

    @Override
    protected boolean updateSelection(IStructuredSelection selection) {
        if (selection.isEmpty()) {
            return false;
        }

        for (Object obj : selection.toArray()) {
            if (!(obj instanceof ResourceStorage)) {
                return false;
            }
            FileSystemElement element = ((ResourceStorage) obj).getFileSystemElement();
            if (ResourceLibraryCommandHelper.checkModifyStatus(element) != ResourceLibraryCommandHelper.STATUS_OK
                    || element.touchedByReadonlySetting()) {
                return false;
            }
        }

        return true;
    }

    @Override
    public void run() {
        CommandStack stack = page.getCommandStack();
        IStructuredSelection sel = getStructuredSelection();

        List<ResourceStorage> resources = new ArrayList<ResourceStorage>();
        for (Object obj : sel.toArray()) {
            if (obj instanceof ResourceStorage) {
                resources.add((ResourceStorage) obj);
            }
        }

        Shell shell = SWTUtil.getStandardDisplay().getActiveShell();

        // Fetch a handle for progress monitor

        List<FileSystemElement> elements = new ArrayList<FileSystemElement>();
        for (Object obj : sel.toArray()) {
            if (obj instanceof ResourceStorage) {
                FileSystemElement element = ((ResourceStorage) obj).getFileSystemElement();
                elements.add(element);
            }
        }

        Command command = RemoveCommand.createResourceRemove(elements);
        if (command.canExecute()) {
            // Warn the user
            MessageBox messageBox = new MessageBox(shell, SWT.ICON_QUESTION | SWT.OK | SWT.CANCEL);
            messageBox.setText("Deleting resources");
            messageBox.setMessage(DELETE_CONFIRMATION_STRING);
            if (messageBox.open() != SWT.OK) {
                command.dispose();
                return;
            }

            stack.execute(command);
        } else {
            command.dispose();
        }
    }
}