org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/meta/BindingHandlerDelegate.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2006 Sybase, Inc. and others.\r
   3  *\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     Sybase, Inc. - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.eclipse.jst.pagedesigner.meta;\r
  13 \r
  14 import org.eclipse.core.resources.IProject;\r
  15 import org.eclipse.jst.pagedesigner.PDPlugin;\r
  16 import org.eclipse.jst.pagedesigner.utils.StructuredModelUtil;\r
  17 import org.eclipse.swt.graphics.Image;\r
  18 import org.eclipse.swt.widgets.Shell;\r
  19 import org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement;\r
  20 import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel;\r
  21 import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode;\r
  22 \r
  23 /**\r
  24  * @author mengbo\r
  25  * @version 1.5\r
  26  * @deprecated\r
  27  */\r
  28 public class BindingHandlerDelegate implements IBindingHandler {\r
  29         private static final String BINDING_DISABLED_IMAGE_FILE = "PD_Binding_disabled.gif"; //$NON-NLS-1$\r
  30         private static final String BINDING_IMAGE_FILE = "PD_Binding.gif"; //$NON-NLS-1$\r
  31 \r
  32         /*\r
  33          * (non-Javadoc)\r
  34          * \r
  35          * @see org.eclipse.jst.pagedesigner.meta.IBindingHandler#handleBinding(org.eclipse.swt.widgets.Shell,\r
  36          *      org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode,\r
  37          *      org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement,\r
  38          *      java.lang.String)\r
  39          */\r
  40         public String handleBinding(Shell shell, IDOMNode ancester,\r
  41                         IDOMElement element, String currentValue) {\r
  42                 IBindingHandler handler = getDelegatedHandler(ancester, element);\r
  43                 if (handler != null) {\r
  44                         return handler\r
  45                                         .handleBinding(shell, ancester, element, currentValue);\r
  46                 }\r
  47         return null;\r
  48         }\r
  49 \r
  50         /*\r
  51          * (non-Javadoc)\r
  52          * \r
  53          * @see org.eclipse.jst.pagedesigner.meta.IBindingHandler#isEnabled(org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode,\r
  54          *      org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement)\r
  55          */\r
  56         // public boolean isEnabled(IDOMNode ancester, IDOMElement element)\r
  57         // {\r
  58         // IBindingHandler handler = getDelegatedHandler(ancester, element);\r
  59         // return (handler == null) ? false : handler.isEnabled(ancester, element);\r
  60         // }\r
  61         /*\r
  62          * (non-Javadoc)\r
  63          * \r
  64          * @see org.eclipse.jst.pagedesigner.meta.IBindingHandler#isEnabled(org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode,\r
  65          *      org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement,\r
  66          *      java.lang.String, java.lang.String,\r
  67          *      org.eclipse.jst.pagedesigner.meta.IAttributeDescriptor)\r
  68          */\r
  69         public boolean isEnabled(IDOMNode ancester, IDOMElement element,\r
  70                         String uri, String tagName, IAttributeDescriptor attr) {\r
  71                 IBindingHandler handler = getDelegatedHandler(ancester, element);\r
  72                 return (handler == null) ? false : handler.isEnabled(ancester, element,\r
  73                                 uri, tagName, attr);\r
  74         }\r
  75 \r
  76 //      public boolean isEnabled(IDOMNode ancester, IDOMElement element,\r
  77 //                      IPropertyPageDescriptor attr) {\r
  78 //              IBindingHandler handler = getDelegatedHandler(ancester, element);\r
  79 //              return (handler == null) ? false : handler.isEnabled(ancester, element,\r
  80 //                              attr);\r
  81 //      }\r
  82         \r
  83         \r
  84         /*\r
  85          * (non-Javadoc)\r
  86          * \r
  87          * @see org.eclipse.jst.pagedesigner.meta.IBindingHandler#getImage()\r
  88          */\r
  89         public Image getImage() {\r
  90                 return PDPlugin.getDefault().getImage(BINDING_IMAGE_FILE);\r
  91         }\r
  92 \r
  93         public Image getDisabledImage() {\r
  94                 return PDPlugin.getDefault().getImage(BINDING_DISABLED_IMAGE_FILE);\r
  95         }\r
  96 \r
  97         private IBindingHandler getDelegatedHandler(IDOMNode ancester,\r
  98                         IDOMElement element) {\r
  99                 IProject project = getProject(ancester, element);\r
 100                 if (project != null) {\r
 101                         Object obj = project.getAdapter(IBindingHandler.class);\r
 102                         if (obj instanceof IBindingHandler) {\r
 103                                 return (IBindingHandler) obj;\r
 104                         }\r
 105                 }\r
 106 \r
 107                 return null;\r
 108         }\r
 109 \r
 110         private IProject getProject(IDOMNode ancester, IDOMElement element) {\r
 111                 IDOMModel model = getModel(ancester, element);\r
 112                 if (model != null) {\r
 113                         return StructuredModelUtil.getProjectFor(model);\r
 114                 }\r
 115         return null;\r
 116         }\r
 117 \r
 118         private IDOMModel getModel(IDOMNode ancester, IDOMElement element) {\r
 119                 if (ancester != null) {\r
 120                         return ancester.getModel();\r
 121                 } else if (element != null) {\r
 122                         return element.getModel();\r
 123                 } else {\r
 124                         return null;\r
 125                 }\r
 126         }\r
 127 \r
 128 }\r