MantleMenuBar.java

/*
 * This program is free software; you can redistribute it and/or modify it under the 
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software 
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this 
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html 
 * or from the Free Software Foundation, Inc., 
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * Copyright 2008 - 2009 Pentaho Corporation.  All rights reserved.
 * 
 */
package org.pentaho.mantle.client;

import org.pentaho.gwt.widgets.client.utils.ElementUtils;
import org.pentaho.gwt.widgets.client.utils.FrameUtils;
import org.pentaho.mantle.client.solutionbrowser.SolutionBrowserPerspective;
import org.pentaho.mantle.client.solutionbrowser.tabs.IFrameTabPanel;

import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.ui.Frame;
import com.google.gwt.user.client.ui.MenuBar;
import com.google.gwt.user.client.ui.MenuItem;
import com.google.gwt.user.client.ui.PopupPanel;

public class MantleMenuBar extends MenuBar {

  public MantleMenuBar() {
    super();
  }

  public MantleMenuBar(boolean vertical) {
    super(vertical);
  }

  @Override
  public void onBrowserEvent(Event event) {
    super.onBrowserEvent(event);

    final MenuItem item = getSelectedItem();
    switch (DOM.eventGetType(event)) {
    case Event.ONCLICK: {
      if (item != null) {
        hidePDFFrames(item);
      }
      break;
    }
    case Event.ONMOUSEOVER: {
      if (item != null) {
        hidePDFFrames(item);
      }
      break;
    }
    }
  }

  private void hidePDFFrames(MenuItem item) {
    Frame frame = getActiveBrowserPerspectiveFrame();
    if (frame == null) {
      return;
    }
    if (item.getSubMenu() != null && item.getSubMenu().isVisible()) {
      if (ElementUtils.elementsOverlap(item.getSubMenu().getElement(), getActiveBrowserPerspectiveFrame().getElement())) {
        FrameUtils.setEmbedVisibility(getActiveBrowserPerspectiveFrame(), false);
      }
    } else if (item.getParentMenu() != null) { // popups
      if (ElementUtils.elementsOverlap(item.getParentMenu().getElement(), getActiveBrowserPerspectiveFrame().getElement())) {
        FrameUtils.setEmbedVisibility(getActiveBrowserPerspectiveFrame(), false);
      }
    }
  }

  private Frame getActiveBrowserPerspectiveFrame() {
    IFrameTabPanel panel = SolutionBrowserPerspective.getInstance().getContentTabPanel().getCurrentFrame();
    if (panel == null) {
      return null;
    } else {
      return panel.getFrame();
    }
  }

  @Override
  public void onPopupClosed(PopupPanel sender, boolean autoClosed) {
    super.onPopupClosed(sender, autoClosed);

    Frame frame = getActiveBrowserPerspectiveFrame();
    if (frame == null) {
      return;
    }
    FrameUtils.setEmbedVisibility(getActiveBrowserPerspectiveFrame(), true);

  }
}