org.talend.designer.core.model.components.ComponentIconLoading.java Source code

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Here is the source code for org.talend.designer.core.model.components.ComponentIconLoading.java

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// ============================================================================
//
// Copyright (C) 2006-2015 Talend Inc. - www.talend.com
//
// This source code is available under agreement available at
// %InstallDIR%\features\org.talend.rcp.branding.%PRODUCTNAME%\%PRODUCTNAME%license.txt
//
// You should have received a copy of the agreement
// along with this program; if not, write to Talend SA
// 9 rue Pages 92150 Suresnes, France
//
// ============================================================================
package org.talend.designer.core.model.components;

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Map;

import org.eclipse.jface.resource.ImageDescriptor;
import org.talend.commons.exception.SystemException;
import org.talend.commons.ui.runtime.exception.ExceptionHandler;
import org.talend.commons.ui.runtime.image.ImageProvider;

/**
 * DOC smallet class global comment. Detailled comment <br/>
 * 
 * $Id: talend.epf 1 2006-09-29 17:06:40 +0000 (ven., 29 sept. 2006) nrousseau $
 * 
 */
public class ComponentIconLoading {

    private File folder;

    private URL folderUrl;

    private Map<String, ImageDescriptor> registry;

    /**
     * DOC smallet ComponentIconLoading constructor comment.
     * 
     * @param componentsImageRegistry
     * 
     * @param folder
     */
    public ComponentIconLoading(Map<String, ImageDescriptor> componentsImageRegistry, File folder) {
        super();
        this.folder = folder;
        this.registry = componentsImageRegistry;
        try {
            this.folderUrl = folder.toURI().toURL();
        } catch (MalformedURLException e) {
            ExceptionHandler.process(new SystemException("Cannot load component icon " + folder.getName(), e)); //$NON-NLS-1$
        }
    }

    public ImageDescriptor getImage32() {
        ImageDescriptor image32 = getImage(ComponentFilesNaming.getInstance().getIcon32FileName(folder.getName()));
        registry.put(folder.getName() + "_32", image32);
        return image32;
    }

    public ImageDescriptor getImage24() {
        ImageDescriptor image24 = null;
        ImageDescriptor image32 = registry.get(folder.getName() + "_32");
        File file24 = new File(folder, ComponentFilesNaming.getInstance().getIcon24FileName(folder.getName()));
        if (file24.exists()) {
            image24 = getImage(ComponentFilesNaming.getInstance().getIcon24FileName(folder.getName()));
        } else if (image32 != null && image32.getImageData() != null) {
            try {
                image24 = ImageDescriptor.createFromImageData(image32.getImageData().scaledTo(24, 24));
            } catch (NullPointerException e) {
                image24 = image32;
            }
        }
        registry.put(folder.getName() + "_24", image24);

        return image24;
    }

    public ImageDescriptor getImage16() {
        ImageDescriptor image16 = null;
        ImageDescriptor image32 = registry.get(folder.getName() + "_32");
        if (image16 == null) {
            File file16 = new File(folder, ComponentFilesNaming.getInstance().getIcon16FileName(folder.getName()));
            if (file16.exists()) {
                image16 = getImage(ComponentFilesNaming.getInstance().getIcon16FileName(folder.getName()));
            } else if (image32 != null && image32.getImageData() != null) {
                image16 = ImageDescriptor.createFromImageData(image32.getImageData().scaledTo(16, 16));
            }
        }
        registry.put(folder.getName() + "_16", image16);
        return image16;
    }

    private ImageDescriptor getImage(String name) {
        try {
            File imageFile = new File(folder, name);
            if (imageFile.exists()) {
                return ImageDescriptor.createFromURL(imageFile.toURI().toURL());
            } else {
                return ImageProvider.getImageDesc(EComponentsImage.DEFAULT_COMPONENT_ICON);
            }
        } catch (MalformedURLException e) {
            ExceptionHandler.process(new SystemException("Cannot load component icon " + name, e)); //$NON-NLS-1$
            return ImageProvider.getImageDesc(EComponentsImage.DEFAULT_COMPONENT_ICON);
        }
    }
}