com.liferay.ide.layouttpl.ui.parts.PortletLayoutTreeEditPart.java Source code

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Here is the source code for com.liferay.ide.layouttpl.ui.parts.PortletLayoutTreeEditPart.java

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/*******************************************************************************
 * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library 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 Lesser General Public License for more
 * details.
 *
 *******************************************************************************/

package com.liferay.ide.layouttpl.ui.parts;

import com.liferay.ide.layouttpl.core.model.ModelElement;
import com.liferay.ide.layouttpl.ui.LayoutTplUI;
import com.liferay.ide.layouttpl.ui.model.PortletLayout;
import com.liferay.ide.layouttpl.ui.policies.PortletLayoutComponentEditPolicy;

import java.beans.PropertyChangeEvent;
import java.net.URL;
import java.util.List;

import org.eclipse.gef.EditPolicy;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.graphics.Image;

/**
 * @author Gregory Amerson
 */
public class PortletLayoutTreeEditPart extends BaseTreeEditPart {

    protected Image icon;

    public PortletLayoutTreeEditPart(PortletLayout model) {
        super(model);

        URL url = LayoutTplUI.getDefault().getBundle().getEntry("/icons/e16/layout.png"); //$NON-NLS-1$
        icon = ImageDescriptor.createFromURL(url).createImage();
    }

    protected void createEditPolicies() {
        // allow removal of the associated model element
        installEditPolicy(EditPolicy.COMPONENT_ROLE, new PortletLayoutComponentEditPolicy());
    }

    protected PortletLayout getCastedModel() {
        return (PortletLayout) getModel();
    }

    protected List<ModelElement> getModelChildren() {
        return getCastedModel().getColumns();
    }

    protected Image getImage() {
        return icon;
    }

    protected String getText() {
        String text = Msgs.portletRow;

        int numcols = getCastedModel().getColumns().size();

        if (numcols == 1) {
            text += Msgs.column;
        } else if (numcols > 1) {
            text += NLS.bind(Msgs.columns, numcols);
        }

        return text;
    }

    public void propertyChange(PropertyChangeEvent evt) {
        String prop = evt.getPropertyName();
        if (PortletLayout.COLUMN_ADDED_PROP.equals(prop)) {
            // add a child to this edit part
            // causes an additional entry to appear in the tree of the outline
            // view
            addChild(createChild(evt.getNewValue()), -1);
        } else if (PortletLayout.COLUMN_REMOVED_PROP.equals(prop)) {
            // remove a child from this edit part
            // causes the corresponding edit part to disappear from the tree in
            // the outline view
            removeChild(getEditPartForChild(evt.getNewValue()));
        } else {
            refreshVisuals();
        }
    }

    private static class Msgs extends NLS {
        public static String column;
        public static String columns;
        public static String portletRow;

        static {
            initializeMessages(PortletLayoutTreeEditPart.class.getName(), Msgs.class);
        }
    }
}