WorkbenchSaveAsAction.java

/*******************************************************************************
 * Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.tools.workbench.framework.internal;

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;

import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;

import org.eclipse.persistence.tools.workbench.framework.action.AbstractFrameworkAction;
import org.eclipse.persistence.tools.workbench.framework.app.ApplicationNode;
import org.eclipse.persistence.tools.workbench.framework.context.WorkbenchContext;


/**
 * loop through the selected "project" nodes and tell them each to save-as;
 * enabled whenever at least a single node is selected;
 * this action is part of the FileMenu and MainToolBar, while SaveAction is
 * part of the SelectionMenu
 */
final class WorkbenchSaveAsAction extends AbstractFrameworkAction
{
    /** we need access to the node manager's internal api */
    private FrameworkNodeManager nodeManager;
    private TreeSelectionListener treeSelectionListener;
    private WindowListener windowListener;


    WorkbenchSaveAsAction(WorkbenchContext context, FrameworkNodeManager nodeManager) {
        super(context);
        this.nodeManager = nodeManager;
    }

    protected void initialize() {
        super.initialize();
        this.initializeTextAndMnemonic("file.saveAs");
        this.initializeIcon("file.saveAs");
        this.initializeToolTipText("file.saveAs.toolTipText");
        this.initializeAccelerator("file.saveAs.ACCELERATOR");

        this.treeSelectionListener = this.buildTreeSelectionListener();
        this.windowListener = this.buildWorkbenchWindowListener();

        this.currentWindow().addWindowListener(this.windowListener);
        this.navigatorSelectionModel().addTreeSelectionListener(this.treeSelectionListener);

        this.updateEnabledState();
    }


    private WindowListener buildWorkbenchWindowListener() {
        return new WindowAdapter() {
            public void windowClosed(WindowEvent e) {
                WorkbenchSaveAsAction.this.workbenchWindowClosed();
            }
        };
    }

    private TreeSelectionListener buildTreeSelectionListener() {
        return new TreeSelectionListener() {
            public void valueChanged(TreeSelectionEvent e) {
                synchronized (WorkbenchSaveAsAction.this) {
                    WorkbenchSaveAsAction.this.update();
                }
            }
        };
    }


    protected void execute() {
        ApplicationNode[] projectNodes = this.selectedProjectNodes();
        for (int i = projectNodes.length; i-- > 0; ) {
            this.nodeManager.saveAs(projectNodes[i], getWorkbenchContext());
        }
    }

    void update() {
        this.updateEnabledState();
    }

    private void updateEnabledState() {
        this.setEnabled(selectedProjectNodes().length > 0);
    }

    void workbenchWindowClosed() {
        this.navigatorSelectionModel().removeTreeSelectionListener(this.treeSelectionListener);
        // stop listening to the window, or, for some odd reason,
        // we will receive the WINDOW_CLOSED event twice...
        this.currentWindow().removeWindowListener(this.windowListener);
    }

}