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