com.hudren.woodpile.views.CategoryViewLabelProvider.java Source code

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Here is the source code for com.hudren.woodpile.views.CategoryViewLabelProvider.java

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/*
 * Project: com.hudren.woodpile
 * File:    CategoryViewLabelProvider.java
 *
 * Author:  Jeff Hudren
 * Created: May 14, 2006
 *
 * Copyright (c) 2006-2013 Hudren Andromeda Connection. All rights reserved. 
 * 
 * The use and distribution terms for this software are covered by the
 * Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
 * which can be found in the file epl-v10.html at the root of this distribution.
 * 
 * By using this software in any fashion, you are agreeing to be bound by
 * the terms of this license.
 * 
 * You must not remove this notice, or any other, from this software.
 */

package com.hudren.woodpile.views;

import org.eclipse.jface.viewers.IDecoration;
import org.eclipse.jface.viewers.ILightweightLabelDecorator;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.graphics.Image;

import com.hudren.woodpile.WoodpilePlugin;
import com.hudren.woodpile.model.Category;
import com.hudren.woodpile.model.CategoryTree;
import com.hudren.woodpile.model.ContentSelection;
import com.hudren.woodpile.model.FilterInstruction;
import com.hudren.woodpile.model.VisibilitySelection;

/**
 * TODO CategoryViewLabelProvider description
 * 
 * @author Jeff Hudren
 */
public class CategoryViewLabelProvider extends LabelProvider implements ILightweightLabelDecorator {

    private Image packageImage;
    private Image excludedPackageImage;
    private Image classImage;
    private Image textImage;

    CategoryViewLabelProvider() {
        super();

        packageImage = WoodpilePlugin.getImageDescriptor("icons/package_obj.gif").createImage();
        classImage = WoodpilePlugin.getImageDescriptor("icons/jcu_obj.gif").createImage();
        textImage = WoodpilePlugin.getImageDescriptor("icons/normal_page.gif").createImage();
    }

    /**
     * @see org.eclipse.jface.viewers.LabelProvider#dispose()
     */
    @Override
    public void dispose() {
        if (packageImage != null)
            packageImage.dispose();

        if (excludedPackageImage != null)
            excludedPackageImage.dispose();

        if (classImage != null)
            classImage.dispose();

        if (textImage != null)
            textImage.dispose();

        super.dispose();
    }

    /**
     * @see org.eclipse.jface.viewers.LabelProvider#getText(java.lang.Object)
     */
    @Override
    public String getText(final Object element) {
        if (element instanceof Category) {
            final Category node = (Category) element;
            String text = node.getName();

            final FilterInstruction instruction = node.getInstruction();
            if (instruction != null) {
                final ContentSelection cs = instruction.getContentSelection();
                final VisibilitySelection vs = instruction.getVisibilitySelection();

                if (cs != null || vs != null) {
                    text += " [";

                    if (cs == ContentSelection.INCLUDE)
                        text += "included";
                    else if (cs == ContentSelection.EXCLUDE)
                        text += "excluded";

                    if (vs != null) {
                        if (cs != null)
                            text += ", ";

                        if (vs == VisibilitySelection.SHOW)
                            text += "shown";
                        else if (vs == VisibilitySelection.HIDE)
                            text += "hidden";
                    }

                    text += "]";
                }
            }

            return text;
        }

        return super.getText(element);
    }

    /**
     * @see org.eclipse.jface.viewers.LabelProvider#getImage(java.lang.Object)
     */
    @Override
    public Image getImage(final Object element) {
        Image image = super.getImage(element);

        if (element instanceof Category) {
            final Category node = (Category) element;

            if (node.hasChildren()) {
                image = packageImage;
            } else {
                final Category parent = node.getParent();

                if (parent != null && !(parent instanceof CategoryTree))
                    image = classImage;
                else
                    image = textImage;
            }
        }

        return image;
    }

    /**
     * @see org.eclipse.jface.viewers.ILightweightLabelDecorator#decorate(java.lang.Object,
     *      org.eclipse.jface.viewers.IDecoration)
     */
    @Override
    public void decorate(final Object element, final IDecoration decoration) {
        if (element instanceof Category) {
            decoration.addSuffix(" [decorated]");
        }
    }

}