Package org.rssowl.contrib.podcast.ui.media

Source Code of org.rssowl.contrib.podcast.ui.media.MediaViewPart

/*   **********************************************************************  **
**   Copyright notice                                                       **
**                                                                          **
**   (c) 2005-2006 RSSOwl Development Team                                  **
**   http://www.rssowl.org/                                                 **
**                                                                          **
**   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.rssowl.org/legal/epl-v10.html                               **
**                                                                          **
**   A copy is found in the file epl-v10.html and important notices to the  **
**   license from the team is found in the textfile LICENSE.txt distributed **
**   in this package.                                                       **
**                                                                          **
**   This copyright notice MUST APPEAR in all copies of the file!           **
**                                                                          **
**   Contributors:                                                          **
**     Christophe Bouhier - podcast plugin                         **
**                                                                          **
**  **********************************************************************  */

package org.rssowl.contrib.podcast.ui.media;

import org.eclipse.jface.action.IMenuListener;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.action.Separator;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.ISelectionListener;
import org.eclipse.ui.IWorkbenchActionConstants;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.part.ViewPart;
import org.rssowl.contrib.podcast.core.process.InstructionService;
import org.rssowl.contrib.podcast.model.IPersonalBookMark;
import org.rssowl.contrib.podcast.model.PersonalCache;
import org.rssowl.contrib.podcast.ui.media.action.MediaOpenAction;
import org.rssowl.contrib.podcast.ui.media.action.SyncPlayAction;
import org.rssowl.core.persist.IBookMark;

/**
* A Media View with several views, showing podcast items in a tree or table
* format.
*/
public class MediaViewPart extends ViewPart {

  private MediaController mMediaController;
  private MediaView mMediaView;
  private ISelectionListener listener;

  /*
   * The content provider class is responsible for providing objects to the
   * view. It can wrap existing objects in adapters or simply return objects
   * as-is. These objects may be sensitive to the current input of the view,
   * or ignore it and always show the same content (like Task List, for
   * example).
   */

  /**
   * The constructor.
   */
  public MediaViewPart() {
    listener = new ISelectionListener() {
      public void selectionChanged(IWorkbenchPart part, ISelection sel) {
        if (!(sel instanceof IStructuredSelection))
          return;
        IStructuredSelection ss = (IStructuredSelection) sel;
        Object o = ss.getFirstElement();

// ********************* CB TODO
// We force an inspection on the bookmark first.
        if (o instanceof IBookMark) {
          IBookMark lBookMark = (IBookMark) o;
          IPersonalBookMark lPBookMark = PersonalCache.getInstance()
              .getPersonalBookMark(lBookMark);
          mMediaController.setMediaView(lPBookMark);
          // Invoke a codelet sequence for inspection.
          InstructionService.getInstance().inspectInstruction(this, lPBookMark);
        }
      }
    };
  }

  /**
   * This is a callback that will allow us to create the viewer and initialize
   * it.
   */
  public void createPartControl(Composite parent) {
    getSite().getPage().addSelectionListener(listener);

    mMediaView = new MediaView(parent);
    mMediaController = new MediaController();
    mMediaController.setView(mMediaView);

    hookContextMenu();
    // hookDoubleClickAction();
    // contributeToActionBars();
  }

  private void hookContextMenu() {
    final MenuManager menuMgr = new MenuManager("#PopupMenu");
    menuMgr.setRemoveAllWhenShown(true);

    Control lControl = null;
    ISelectionProvider lProvider = null;
    if (mMediaView.getCurrentView() == MediaView.MEDIA_VIEW) {
      lControl = mMediaView.getMediaViewer().mTableViewer.getControl();
      lProvider = mMediaView.getMediaViewer().mTableViewer;
    } else {
      lControl = mMediaView.getItemViewer().mTreeViewer.getControl();
      lProvider = mMediaView.getItemViewer().mTreeViewer;
    }

    final IStructuredSelection selection = (IStructuredSelection) lProvider
        .getSelection();

    if (selection.isEmpty()) {
      // CB TODO decide what to do on an empty selection.
    }

    menuMgr.addMenuListener(new IMenuListener() {
      public void menuAboutToShow(IMenuManager manager) {
        manager.add(new Separator("control"));
        menuMgr
            .appendToGroup("control",
                new MediaOpenAction(selection));
        menuMgr.appendToGroup("control", new SyncPlayAction(selection));
        MediaViewPart.this.fillContextMenu(manager);
      }
    });

    if (lControl != null && lProvider != null) {
      Menu menu = menuMgr.createContextMenu(lControl);
      lControl.setMenu(menu);
      // Register to the workbench.
      getSite().registerContextMenu(menuMgr, lProvider);
    }
  }

  private void contributeToActionBars() {
    IActionBars bars = getViewSite().getActionBars();
    fillLocalPullDown(bars.getMenuManager());
    fillLocalToolBar(bars.getToolBarManager());
  }

  private void fillLocalPullDown(IMenuManager manager) {
    // manager.add(action1);
    // manager.add(new Separator());
    // manager.add(action2);
  }

  private void fillContextMenu(IMenuManager manager) {
    // Workbench marker for extensions.
    manager.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
    manager.add(new Separator("control"));

// CB only add to menu based on selection, somethign with a selection
// IStructuredSelection selection = (IStructuredSelection) fViewer
// .getSelection();
// if (selection.isEmpty()) {
// return;
// }
  }

  private void fillLocalToolBar(IToolBarManager manager) {
    // manager.add(action1);
    // manager.add(action2);
  }

  private void hookDoubleClickAction() {
    // viewer.addDoubleClickListener(new IDoubleClickListener() {
    // public void doubleClick(DoubleClickEvent event) {
    // doubleClickAction.run();
    // }
    // });
  }

  private void showMessage(String message) {
    // MessageDialog.openInformation(
    // viewer.getControl().getShell(),
    // "Sample View",
    // message);
  }

  /**
   * Passing the focus request to the viewer's control.
   */
  public void setFocus() {
    // viewer.getControl().setFocus();
  }

  /**
   *
   */
  public void dispose() {
    // We shall start or stop services related to this view.

  }
}
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