net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/text/template/contentassist/TemplateInformationControlCreator.java

   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.contentassist;
  12
  13 import org.eclipse.swt.events.DisposeEvent;
  14 import org.eclipse.swt.events.DisposeListener;
  15 import org.eclipse.swt.widgets.Shell;
  16
  17 import org.eclipse.jface.text.IInformationControl;
  18 import org.eclipse.jface.text.IInformationControlCreator;
  19 import org.eclipse.jface.text.IInformationControlCreatorExtension;
  20
  21 import net.sourceforge.phpdt.internal.ui.text.java.hover.SourceViewerInformationControl;
  22
  23
  24 final public class TemplateInformationControlCreator implements IInformationControlCreator, IInformationControlCreatorExtension {
  25
  26         private SourceViewerInformationControl fControl;
  27
  28         public TemplateInformationControlCreator()  {
  29         }
  30
  31         /*
  32          * @see org.eclipse.jface.text.IInformationControlCreator#createInformationControl(org.eclipse.swt.widgets.Shell)
  33          */
  34         public IInformationControl createInformationControl(Shell parent) {
  35                 fControl= new SourceViewerInformationControl(parent);
  36                 fControl.addDisposeListener(new DisposeListener() {
  37                         public void widgetDisposed(DisposeEvent e) {
  38                                 fControl= null;
  39                         }
  40                 });
  41                 return fControl;
  42         }
  43
  44         /*
  45          * @see org.eclipse.jface.text.IInformationControlCreatorExtension#canReuse(org.eclipse.jface.text.IInformationControl)
  46          */
  47         public boolean canReuse(IInformationControl control) {
  48                 return fControl == control && fControl != null;
  49         }
  50
  51         /*
  52          * @see org.eclipse.jface.text.IInformationControlCreatorExtension#canReplace(org.eclipse.jface.text.IInformationControlCreator)
  53          */
  54         public boolean canReplace(IInformationControlCreator creator) {
  55                 return (creator != null && getClass() == creator.getClass());
  56         }
  57 }