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   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2004 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.text.template.preferences;
  12
  13 import net.sourceforge.phpeclipse.PHPeclipsePlugin;
  14
  15 import org.eclipse.jface.dialogs.MessageDialog;
  16 import org.eclipse.jface.text.BadLocationException;
  17 import org.eclipse.jface.text.IDocument;
  18 import org.eclipse.jface.text.ITextViewer;
  19 import org.eclipse.jface.text.contentassist.ICompletionProposal;
  20 import org.eclipse.jface.text.contentassist.IContextInformation;
  21 import org.eclipse.jface.text.templates.TemplateVariableResolver;
  22 import org.eclipse.swt.graphics.Image;
  23 import org.eclipse.swt.graphics.Point;
  24 import org.eclipse.swt.widgets.Shell;
  25
  26 /**
  27  * A proposal for insertion of template variables.
  28  */
  29 public class TemplateVariableProposal implements ICompletionProposal {
  30
  31         private TemplateVariableResolver fVariable;
  32
  33         private int fOffset;
  34
  35         private int fLength;
  36
  37         private ITextViewer fViewer;
  38
  39         private Point fSelection;
  40
  41         /**
  42          * Creates a template variable proposal.
  43          *
  44          * @param variable
  45          *            the template variable
  46          * @param offset
  47          *            the offset to replace
  48          * @param length
  49          *            the length to replace
  50          * @param viewer
  51          *            the viewer
  52          */
  53         public TemplateVariableProposal(TemplateVariableResolver variable,
  54                         int offset, int length, ITextViewer viewer) {
  55                 fVariable = variable;
  56                 fOffset = offset;
  57                 fLength = length;
  58                 fViewer = viewer;
  59         }
  60
  61         /*
  62          * @see ICompletionProposal#apply(IDocument)
  63          */
  64         public void apply(IDocument document) {
  65
  66                 try {
  67                         String variable = fVariable.getType().equals("dollar") ? "$$" : "${" + fVariable.getType() + '}'; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
  68                         document.replace(fOffset, fLength, variable);
  69                         fSelection = new Point(fOffset + variable.length(), 0);
  70
  71                 } catch (BadLocationException e) {
  72                         PHPeclipsePlugin.log(e);
  73
  74                         Shell shell = fViewer.getTextWidget().getShell();
  75                         MessageDialog
  76                                         .openError(
  77                                                         shell,
  78                                                         TemplatePreferencesMessages
  79                                                                         .getString("TemplateVariableProposal.error.title"), e.getMessage()); //$NON-NLS-1$
  80                 }
  81         }
  82
  83         /*
  84          * @see ICompletionProposal#getSelection(IDocument)
  85          */
  86         public Point getSelection(IDocument document) {
  87                 return fSelection;
  88         }
  89
  90         /*
  91          * @see ICompletionProposal#getAdditionalProposalInfo()
  92          */
  93         public String getAdditionalProposalInfo() {
  94                 return null;
  95         }
  96
  97         /*
  98          * @see ICompletionProposal#getDisplayString()
  99          */
 100         public String getDisplayString() {
 101                 return fVariable.getType() + " - " + fVariable.getDescription(); //$NON-NLS-1$
 102         }
 103
 104         /*
 105          * @see ICompletionProposal#getImage()
 106          */
 107         public Image getImage() {
 108                 return null;
 109         }
 110
 111         /*
 112          * @see ICompletionProposal#getContextInformation()
 113          */
 114         public IContextInformation getContextInformation() {
 115                 return null;
 116         }
 117 }