net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/viewsupport/StatusBarUpdater.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 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 Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.ui.viewsupport;
  12
  13
  14 import net.sourceforge.phpdt.core.IJavaElement;
  15 import net.sourceforge.phpdt.internal.ui.PHPUIMessages;
  16
  17 import org.eclipse.core.resources.IContainer;
  18 import org.eclipse.core.resources.IResource;
  19 import org.eclipse.jface.action.IStatusLineManager;
  20 import org.eclipse.jface.viewers.ISelection;
  21 import org.eclipse.jface.viewers.ISelectionChangedListener;
  22 import org.eclipse.jface.viewers.IStructuredSelection;
  23 import org.eclipse.jface.viewers.SelectionChangedEvent;
  24
  25 /**
  26  * Add the <code>StatusBarUpdater</code> to your ViewPart to have the statusbar
  27  * describing the selected elements.
  28  */
  29 public class StatusBarUpdater implements ISelectionChangedListener {
  30
  31         private final int LABEL_FLAGS= JavaElementLabels.DEFAULT_QUALIFIED | JavaElementLabels.ROOT_POST_QUALIFIED | JavaElementLabels.APPEND_ROOT_PATH |
  32                         JavaElementLabels.M_PARAMETER_TYPES | JavaElementLabels.M_PARAMETER_NAMES | JavaElementLabels.M_APP_RETURNTYPE | JavaElementLabels.M_EXCEPTIONS |
  33                         JavaElementLabels.F_APP_TYPE_SIGNATURE;
  34
  35         private IStatusLineManager fStatusLineManager;
  36
  37         public StatusBarUpdater(IStatusLineManager statusLineManager) {
  38                 fStatusLineManager= statusLineManager;
  39         }
  40
  41         /*
  42          * @see ISelectionChangedListener#selectionChanged
  43          */
  44         public void selectionChanged(SelectionChangedEvent event) {
  45                 String statusBarMessage= formatMessage(event.getSelection());
  46                 fStatusLineManager.setMessage(statusBarMessage);
  47         }
  48
  49
  50         protected String formatMessage(ISelection sel) {
  51                 if (sel instanceof IStructuredSelection && !sel.isEmpty()) {
  52                         IStructuredSelection selection= (IStructuredSelection) sel;
  53
  54                         int nElements= selection.size();
  55                         if (nElements > 1) {
  56                                 return PHPUIMessages.getFormattedString("StatusBarUpdater.num_elements_selected", String.valueOf(nElements)); //$NON-NLS-1$
  57                         } else {
  58                                 Object elem= selection.getFirstElement();
  59                                 if (elem instanceof IJavaElement) {
  60                                         return formatJavaElementMessage((IJavaElement) elem);
  61                                 } else if (elem instanceof IResource) {
  62                                         return formatResourceMessage((IResource) elem);
  63                                 }
  64                         }
  65                 }
  66                 return "";  //$NON-NLS-1$
  67         }
  68
  69         private String formatJavaElementMessage(IJavaElement element) {
  70                 return JavaElementLabels.getElementLabel(element, LABEL_FLAGS);
  71         }
  72
  73         private String formatResourceMessage(IResource element) {
  74                 IContainer parent= element.getParent();
  75                 if (parent != null && parent.getType() != IResource.ROOT)
  76                         return element.getName() + JavaElementLabels.CONCAT_STRING + parent.getFullPath().makeRelative().toString();
  77                 else
  78                         return element.getName();
  79         }
  80
  81 }