com.nokia.carbide.cpp.internal.ui.SharedImages.java Source code

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Here is the source code for com.nokia.carbide.cpp.internal.ui.SharedImages.java

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/*
* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of the License "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: 
*
*/

package com.nokia.carbide.cpp.internal.ui;

import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.net.URL;

import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.graphics.Image;

import com.nokia.carbide.cpp.ui.CarbideUIPlugin;
import com.nokia.carbide.cpp.ui.ICarbideSharedImages;

public class SharedImages implements ICarbideSharedImages {

    static final String KEY_PREFIX = "IMG_";
    private ImageRegistry registry;

    public SharedImages() {
        registry = new ImageRegistry();
        IPath basePath = new Path("icons");
        Class stringClass = java.lang.String.class;
        Field[] fields = getClass().getFields();
        for (Field field : fields) {
            String fieldName = field.getName();
            if (fieldName.startsWith(KEY_PREFIX) && field.getType() == stringClass) {
                int m = field.getModifiers();
                if (Modifier.isStatic(m) && Modifier.isFinal(m)) {
                    try {
                        Object imagePath = field.get(this);
                        if (imagePath != null) {
                            String imagePathStr = imagePath.toString();
                            IPath path = basePath.append(imagePathStr);
                            ImageDescriptor descriptor = createImageDescriptor(path);
                            registry.put(imagePathStr, descriptor);
                        } else {
                            CarbideUIPlugin.log(null, "No path for image key " + fieldName);
                        }
                    } catch (IllegalArgumentException x) {
                        CarbideUIPlugin.log(x);
                    } catch (IllegalAccessException x) {
                        CarbideUIPlugin.log(x);
                    }
                }
            }
        }
    }

    public Image getImage(String key) {
        return registry.get(key);
    }

    public ImageDescriptor getImageDescriptor(String key) {
        return registry.getDescriptor(key);
    }

    private ImageDescriptor createImageDescriptor(IPath path) {
        ImageDescriptor result;
        URL url = FileLocator.find(CarbideUIPlugin.getDefault().getBundle(), path, null);
        if (url != null) {
            result = ImageDescriptor.createFromURL(url);
        } else {
            result = ImageDescriptor.getMissingImageDescriptor();
        }
        return result;
    }
}