no.resheim.eclipse.quicklook.macosx.handlers.QuickLookHandler.java Source code

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Here is the source code for no.resheim.eclipse.quicklook.macosx.handlers.QuickLookHandler.java

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/*******************************************************************************
 * Copyright (c) 2013 Torkild U. Resheim.
 * 
 * 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: 
 *    Torkild U. Resheim - initial API and implementation
 *******************************************************************************/
package no.resheim.eclipse.quicklook.macosx.handlers;

import java.io.IOException;
import java.util.ArrayList;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.ui.statushandlers.StatusManager;

/**
 * A handler opening the OS X QuickLook feature on selected files and folders when activated.
 * 
 * @author Torkild U. Resheim
 * @see org.eclipse.core.commands.IHandler
 * @see org.eclipse.core.commands.AbstractHandler
 */
public class QuickLookHandler extends AbstractHandler {

    public QuickLookHandler() {
    }

    public Object execute(ExecutionEvent event) throws ExecutionException {
        ISelection currentSelection = HandlerUtil.getCurrentSelection(event);
        if (currentSelection != null) {
            if (currentSelection instanceof IStructuredSelection) {
                IStructuredSelection s = (IStructuredSelection) currentSelection;
                ArrayList<String> paths = new ArrayList<String>();
                Object[] objects = s.toArray();
                for (Object object : objects) {
                    if (object instanceof IAdaptable) {
                        Object adapter = ((IAdaptable) object).getAdapter(IResource.class);
                        if (adapter != null) {
                            String osString = ((IResource) adapter).getLocation().toOSString();
                            paths.add(osString);
                        }
                    }
                }
                if (paths.size() > 0) {
                    try {
                        execute(paths.toArray(new String[paths.size()]));
                    } catch (Exception e) {
                        IStatus status = new Status(IStatus.ERROR, "no.resheim.eclipse.utils.quicklook.macosx", //$NON-NLS-1$
                                "Could not execute QuickLookHandler", e); //$NON-NLS-1$
                        StatusManager.getManager().handle(status);
                    }
                }
            }
        }
        return null;
    }

    private void execute(String[] paths) throws IOException, InterruptedException {
        String[] args = new String[paths.length + 2];
        args[0] = "qlmanage"; //$NON-NLS-1$
        args[1] = "-p"; //$NON-NLS-1$
        System.arraycopy(paths, 0, args, 2, paths.length);
        Runtime.getRuntime().exec(args);
    }
}