com.meikas.eclipse.recentfiles.views.ViewLabelProvider.java Source code

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Here is the source code for com.meikas.eclipse.recentfiles.views.ViewLabelProvider.java

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/*******************************************************************************
 * Copyright (c) 2009 Ivar Meikas, Codehoop OU and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Ivar Meikas
 *******************************************************************************/
package com.meikas.eclipse.recentfiles.views;

import java.net.URI;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.content.IContentType;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.IEditorRegistry;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.ide.IDE;
import org.eclipse.ui.ide.IDE.SharedImages;

import com.meikas.eclipse.recentfiles.Activator;
import com.meikas.eclipse.recentfiles.core.store.FileLink;

/**
 * @author Ivar Meikas <ivar@codehoop.com>
 */
class ViewLabelProvider extends LabelProvider implements ITableLabelProvider {

    private static final int BOOKMARK_COLUMN = 0;
    private static final int FILENAME_COLUMN = 1;

    public ViewLabelProvider() {
    }

    public String getColumnText(Object obj, int index) {
        if (index != 1)
            return null;
        if (obj instanceof FileLink) {
            return calculateFileDisplayName((FileLink) obj);
        }
        return getText(obj);
    }

    public Image getColumnImage(Object obj, int column) {
        if (obj instanceof FileLink)
            return getFilelinkImage(column, (FileLink) obj);

        return null;

    }

    private String calculateFileDisplayName(FileLink f) {
        String fileName = f.getFileName();
        String[] split = fileName.split("/");
        if (split.length > 0)
            return split[split.length - 1];
        else
            return fileName;
    }

    private Image getFilelinkImage(int column, FileLink fileLink) {
        switch (column) {
        case BOOKMARK_COLUMN:
            return getBookmarkImage(fileLink);

        case FILENAME_COLUMN:
            return getContentSpecificImage(fileLink.getFileUri());

        default:
            return null;
        }
    }

    private Image getBookmarkImage(FileLink fileLink) {
        if (fileLink.isBookmark()) {
            return PlatformUI.getWorkbench().getSharedImages().getImage(SharedImages.IMG_OBJS_BKMRK_TSK);
        }
        return null;
    }

    private Image getContentSpecificImage(URI fileUri) {
        IFile[] filesForURI = getFilesForUri(fileUri);

        if (filesForURI != null && filesForURI.length > 0) {
            return getImage(filesForURI[0]);
        }

        return null;
    }

    private IFile[] getFilesForUri(URI fileUri) {
        try {
            return ResourcesPlugin.getWorkspace().getRoot().findFilesForLocationURI(fileUri);
        } catch (IllegalArgumentException e) {
            Activator.logErrorMessage("Finding files failed \"" + fileUri + "\"", e);
        }

        return null;
    }

    private Image getImage(IFile file) {
        IContentType contentType = IDE.getContentType(file);

        IEditorRegistry editorRegistry = PlatformUI.getWorkbench().getEditorRegistry();
        ImageDescriptor imageDescriptor = editorRegistry.getImageDescriptor(file.getName(), contentType);

        return imageDescriptor.createImage();
    }
}