net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/JavaSourceViewer.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
  12 package net.sourceforge.phpeclipse.phpeditor;
  13
  14
  15 import org.eclipse.swt.widgets.Composite;
  16
  17 import org.eclipse.jface.text.information.IInformationPresenter;
  18 import org.eclipse.jface.text.source.IOverviewRuler;
  19 import org.eclipse.jface.text.source.IVerticalRuler;
  20 import org.eclipse.jface.text.source.SourceViewer;
  21 import org.eclipse.jface.text.source.SourceViewerConfiguration;
  22
  23 //import net.sourceforge.phpdt.ui.text.JavaSourceViewerConfiguration;
  24
  25
  26
  27 public class JavaSourceViewer extends SourceViewer {
  28
  29         /**
  30          * Text operation code for requesting the outline for the current input.
  31          */
  32         public static final int SHOW_OUTLINE= 51;
  33
  34         /**
  35          * Text operation code for requesting the outline for the element at the current position.
  36          */
  37         public static final int OPEN_STRUCTURE= 52;
  38
  39
  40         private IInformationPresenter fOutlinePresenter;
  41         private IInformationPresenter fStructurePresenter;
  42
  43         public JavaSourceViewer(Composite parent, IVerticalRuler verticalRuler, IOverviewRuler overviewRuler, boolean showAnnotationsOverview, int styles) {
  44                 super(parent, verticalRuler, overviewRuler, showAnnotationsOverview, styles);
  45         }
  46
  47         /*
  48          * @see ITextOperationTarget#doOperation(int)
  49          */
  50         public void doOperation(int operation) {
  51                 if (getTextWidget() == null)
  52                         return;
  53
  54                 switch (operation) {
  55                         case SHOW_OUTLINE:
  56                                 fOutlinePresenter.showInformation();
  57                                 return;
  58                         case OPEN_STRUCTURE:
  59                                 fStructurePresenter.showInformation();
  60                                 return;
  61                 }
  62
  63                 super.doOperation(operation);
  64         }
  65
  66         /*
  67          * @see ITextOperationTarget#canDoOperation(int)
  68          */
  69         public boolean canDoOperation(int operation) {
  70                 if (operation == SHOW_OUTLINE)
  71                         return fOutlinePresenter != null;
  72                 if (operation == OPEN_STRUCTURE)
  73                         return fStructurePresenter != null;
  74                 return super.canDoOperation(operation);
  75         }
  76
  77         /*
  78          * @see ISourceViewer#configure(SourceViewerConfiguration)
  79          */
  80         public void configure(SourceViewerConfiguration configuration) {
  81                 super.configure(configuration);
  82                 if (configuration instanceof PHPSourceViewerConfiguration) {
  83                         fOutlinePresenter= ((PHPSourceViewerConfiguration)configuration).getOutlinePresenter(this, false);
  84                         fOutlinePresenter.install(this);
  85                 }
  86                 if (configuration instanceof PHPSourceViewerConfiguration) {
  87                         fStructurePresenter= ((PHPSourceViewerConfiguration)configuration).getOutlinePresenter(this, true);
  88                         fStructurePresenter.install(this);
  89                 }
  90         }
  91
  92         /*
  93          * @see TextViewer#handleDispose()
  94          */
  95         protected void handleDispose() {
  96                 if (fOutlinePresenter != null) {
  97                         fOutlinePresenter.uninstall();
  98                         fOutlinePresenter= null;
  99                 }
 100                 if (fStructurePresenter != null) {
 101                         fStructurePresenter.uninstall();
 102                         fStructurePresenter= null;
 103                 }
 104                 super.handleDispose();
 105         }
 106 }