com.google.code.t4eclipse.tools.action.ShowSelection.java Source code

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Here is the source code for com.google.code.t4eclipse.tools.action.ShowSelection.java

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/*******************************************************************************
 * Copyright (c) 2013 jialiang.
 * 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:
 *     Ben Xu, xufengbing@gmail.com - initial API and implementation
 *     jialiang, lantianjialiang@gmail.com - add copy right and fix warning
 ******************************************************************************/
package com.google.code.t4eclipse.tools.action;

import java.util.Iterator;

import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TreePath;
import org.eclipse.jface.viewers.TreeSelection;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowActionDelegate;
import org.eclipse.ui.PlatformUI;

/**
 * Our sample action implements workbench action delegate. The action proxy will
 * be created by the workbench and shown in the UI. When the user tries to use
 * the action, this delegate will be created and execution will be delegated to
 * it.
 * 
 * @see IWorkbenchWindowActionDelegate
 */
public class ShowSelection implements IWorkbenchWindowActionDelegate {
    @SuppressWarnings("unused")
    private IWorkbenchWindow window;

    /**
     * The constructor.
     */
    public ShowSelection() {
    }

    /**
     * The action has been activated. The argument of the method represents the
     * 'real' action sitting in the workbench UI.
     * 
     * @see IWorkbenchWindowActionDelegate#run
     */
    @SuppressWarnings("rawtypes")
    public void run(IAction action) {
        IWorkbenchPart part = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActivePart();

        ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
        if (selectionProvider == null) {
            System.out.println("no selection provide or this part!");
            return;
        }

        System.out.println("the selection provide is:" + selectionProvider.getClass().getName());

        ISelection selection = selectionProvider.getSelection();

        if (selection instanceof IStructuredSelection) {
            System.out.println("structure selection:" + selection.getClass().getName() + " :" + selection);
            IStructuredSelection sstruction = (IStructuredSelection) selection;
            System.out.println("first element: class" + sstruction.getFirstElement().getClass().getName()
                    + ":  content:" + sstruction.getFirstElement());

            Object[] allObject = sstruction.toArray();
            System.out.println(" object size:" + allObject.length);
            Iterator iterator = sstruction.iterator();
            while (iterator.hasNext()) {
                System.out.println(iterator.next().getClass().getName());
            }
        } else {
            System.out.println("commmon  selection:" + selection.getClass().getName());

            System.out.println("selection" + selection);
        }

        if (selection instanceof TreeSelection) {
            System.out.println("TreeSelection:");
            TreeSelection selection3 = (TreeSelection) selection;
            TreePath[] path = selection3.getPaths();
            for (TreePath p : path) {
                System.out.println(" tree path--------------- :" + p);
                int count = p.getSegmentCount();
                for (int i = 0; i < count; i++) {
                    Object segment = p.getSegment(i);
                    System.out.println(" segament " + i + " :" + segment.getClass().getName() + " " + segment);
                }
            }
        }
    }

    /**
     * Selection in the workbench has been changed. We can change the state of
     * the 'real' action here if we want, but this can only happen after the
     * delegate has been created.
     * 
     * @see IWorkbenchWindowActionDelegate#selectionChanged
     */
    public void selectionChanged(IAction action, ISelection selection) {
        //do nothing
    }

    /**
     * We can use this method to dispose of any system resources we previously
     * allocated.
     * 
     * @see IWorkbenchWindowActionDelegate#dispose
     */
    public void dispose() {
        //do nothing
    }

    /**
     * We will cache window object in order to be able to provide parent shell
     * for the message dialog.
     * 
     * @see IWorkbenchWindowActionDelegate#init
     */
    @SuppressWarnings("hiding")
    public void init(IWorkbenchWindow window) {
        this.window = window;
    }
}