net.sourceforge.phpeclipse.webbrowser/src/net/sourceforge/phpeclipse/webbrowser/internal/OpenWithBrowserActionDelegate.java

   1 /**
   2  * Copyright (c) 2003 IBM Corporation and others.
   3  * All rights reserved. � This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  �*
   8  * Contributors:
   9  *    IBM - Initial API and implementation
  10  */
  11 package net.sourceforge.phpeclipse.webbrowser.internal;
  12
  13 import java.net.URL;
  14 import java.util.Iterator;
  15
  16 import net.sourceforge.phpeclipse.webbrowser.WebBrowser;
  17 import net.sourceforge.phpeclipse.webbrowser.WebBrowserEditorInput;
  18
  19 import org.eclipse.core.resources.IResource;
  20 import org.eclipse.jface.action.IAction;
  21 import org.eclipse.jface.viewers.ISelection;
  22 import org.eclipse.jface.viewers.IStructuredSelection;
  23 import org.eclipse.ui.IActionDelegate;
  24
  25 /**
  26  * Action to open the Web broswer on a resource.
  27  */
  28 public class OpenWithBrowserActionDelegate implements IActionDelegate {
  29         private IResource resource;
  30
  31         /**
  32          * OpenBrowserAction constructor comment.
  33          */
  34         public OpenWithBrowserActionDelegate() {
  35                 super();
  36         }
  37
  38         /**
  39          * Performs this action.
  40          * <p>
  41          * This method is called when the delegating action has been triggered.
  42          * Implement this method to do the actual work.
  43          * </p>
  44          *
  45          * @param action
  46          *            the action proxy that handles the presentation portion of the
  47          *            action
  48          */
  49         public void run(IAction action) {
  50                 URL url = null;
  51                 try {
  52                         url = new URL("file://" + resource.getLocation());
  53                         WebBrowser.openURL(new WebBrowserEditorInput(url,
  54                                         WebBrowserEditorInput.SHOW_ALL
  55                                                         | WebBrowserEditorInput.FORCE_NEW_PAGE));
  56                 } catch (Exception e) {
  57                         Trace.trace(Trace.SEVERE, "Error opening browser on file", e);
  58                 }
  59         }
  60
  61         /**
  62          * Notifies this action delegate that the selection in the workbench has
  63          * changed.
  64          * <p>
  65          * Implementers can use this opportunity to change the availability of the
  66          * action or to modify other presentation properties.
  67          * </p>
  68          *
  69          * @param action
  70          *            the action proxy that handles presentation portion of the
  71          *            action
  72          * @param selection
  73          *            the current selection in the workbench
  74          */
  75         public void selectionChanged(IAction action, ISelection sel) {
  76                 if (sel.isEmpty() || !(sel instanceof IStructuredSelection)) {
  77                         action.setEnabled(false);
  78                         return;
  79                 }
  80
  81                 IStructuredSelection select = (IStructuredSelection) sel;
  82                 Iterator iterator = select.iterator();
  83                 Object selection = iterator.next();
  84                 if (iterator.hasNext()) { // more than one selection (should never
  85                                                                         // happen)
  86                         action.setEnabled(false);
  87                         return;
  88                 }
  89
  90                 if (!(selection instanceof IResource)) {
  91                         action.setEnabled(false);
  92                         return;
  93                 }
  94
  95                 resource = (IResource) selection;
  96                 action.setEnabled(true);
  97         }
  98 }