plugins/org.eclipse.objectteams.otdt.ui/src/org/eclipse/objectteams/otdt/internal/ui/bindingeditor/CalloutMappingConfiguration.java - objectteams/org.eclipse.objectteams - Git at Google

 /**********************************************************************
  * This file is part of "Object Teams Development Tooling"-Software
  *
  * Copyright 2005, 2007 Fraunhofer Gesellschaft, Munich, Germany,
  * for its Fraunhofer Institute for Computer Architecture and Software
  * Technology (FIRST), Berlin, Germany and Technical University Berlin,
  * Germany.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Please visit http://www.eclipse.org/objectteams for updates and contact.
  *
  * Contributors:
  * Fraunhofer FIRST - Initial API and implementation
  * Technical University Berlin - Initial API and implementation
  **********************************************************************/
 package org.eclipse.objectteams.otdt.internal.ui.bindingeditor;

 import java.util.ArrayList;
 import java.util.Iterator;

 import org.eclipse.jdt.core.dom.ASTNode;
 import org.eclipse.jdt.core.dom.CalloutMappingDeclaration;
 import org.eclipse.jdt.core.dom.Expression;
 import org.eclipse.jdt.core.dom.FieldAccessSpec;
 import org.eclipse.jdt.core.dom.MethodMappingElement;
 import org.eclipse.jdt.core.dom.MethodSpec;
 import org.eclipse.jdt.core.dom.ParameterMapping;
 import org.eclipse.jdt.core.dom.SingleVariableDeclaration;
 import org.eclipse.jdt.core.dom.rewrite.ASTNodeCreator;
 import org.eclipse.jface.text.Document;
 import org.eclipse.jface.text.TextViewer;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.IStructuredContentProvider;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.ListViewer;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.objectteams.otdt.ui.OTDTUIPlugin;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.StyledText;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.layout.FormAttachment;
 import org.eclipse.swt.layout.FormData;
 import org.eclipse.swt.layout.FormLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.List;

 /**
  * This is a configuration element for the
  * parameter mappings of a callout mapping.
  *
  * A parameter mapping: expression "->" identifier
  * A result mapping:      "result" "<-" expression
  *
  * @author jwloka
  */
 public class CalloutMappingConfiguration extends Group
 {
     // Method mapping declaration context
     private CalloutMappingDeclaration _callout;

     // parameter mapping
     private ListViewer _paraListViewer;
     private TextViewer _paraTextViewer;

     // result mapping
     private ListViewer _resListViewer;
     private TextViewer _resTextViewer;

     private BindingEditor _bindingEditor;
     private Label _methBindLabel;

     private final Object[] EMPTY = new Object[0];
     private static final String EMPTY_TEXT = ""; //$NON-NLS-1$


     class BaseMethodParameterContentProvider implements IStructuredContentProvider
     {
         public Object[] getElements(Object inputElement)
         {
             if (_callout == null)
             {
                 return EMPTY;
             }

             java.util.List<String> result = new ArrayList<String>();
             MethodMappingElement baseElement = _callout.getBaseMappingElement();
             if (baseElement instanceof FieldAccessSpec) {
             	result.add(baseElement.getName().toString());
             } else if (baseElement instanceof MethodSpec) {
 	            MethodSpec methSpec = (MethodSpec)baseElement;
 	            for (Iterator paramIdx = methSpec.parameters().iterator(); paramIdx.hasNext();) {
 	                SingleVariableDeclaration param = (SingleVariableDeclaration) paramIdx.next();
 	                result.add(param.getName().toString());
 	            }
             }
             return result.toArray();

         }

         public void dispose()
         {}

         public void inputChanged(Viewer viewer, Object oldInput, Object newInput)
         {}
     }


     class ResultContentProvider implements IStructuredContentProvider
     {
         public Object[] getElements(Object inputElement)
         {
             return new Object[] { "result" }; //$NON-NLS-1$
         }

         public void dispose()
         {}

         public void inputChanged(Viewer viewer, Object oldInput, Object newInput)
         {}
     }


     public CalloutMappingConfiguration(Composite parent, int style)
     {
         super(parent, style);
         _bindingEditor = (BindingEditor)parent.getParent();
         setText(OTDTUIPlugin.getResourceString("CalloutMappingConfiguration_dialog_title")); //$NON-NLS-1$
         setLayout(new FormLayout());

         _methBindLabel = new Label(this, SWT.NONE);
         final FormData formData = new FormData();
         formData.right = new FormAttachment(100, -5);
         formData.top = new FormAttachment(0, 5);
         formData.left = new FormAttachment(0, 10);
         _methBindLabel.setLayoutData(formData);
         _methBindLabel.setText(OTDTUIPlugin.getResourceString("MethodMappingConfiguration_no_method_binding_selected")); //$NON-NLS-1$
         final Group paraMapGrp = new Group(this, SWT.NONE);
         paraMapGrp.setText(OTDTUIPlugin.getResourceString("MethodMappingConfiguration_param_mapping_group_title")); //$NON-NLS-1$
         final FormData formData_1 = new FormData();
         formData_1.bottom = new FormAttachment(50, 0);
         formData_1.right = new FormAttachment(100, -5);
         formData_1.top = new FormAttachment(0, 28);
         formData_1.left = new FormAttachment(0, 5);
         paraMapGrp.setLayoutData(formData_1);
         paraMapGrp.setLayout(new FormLayout());

         // left side, expression
         _paraTextViewer = new TextViewer(paraMapGrp, SWT.BORDER);
         _paraTextViewer.setDocument(new Document());
         final StyledText paraText = _paraTextViewer.getTextWidget();
         final FormData formData_5 = new FormData();
         formData_5.right = new FormAttachment(43, 0);
         formData_5.bottom = new FormAttachment(100, -5);
         formData_5.top = new FormAttachment(0, 5);
         formData_5.left = new FormAttachment(0, 5);
         paraText.setLayoutData(formData_5);
         _paraTextViewer.setInput(new Object());

         // right side, identiers
         _paraListViewer = new ListViewer(paraMapGrp, SWT.BORDER);
         _paraListViewer.setContentProvider(new BaseMethodParameterContentProvider());
         final List paraList = _paraListViewer.getList();
         final FormData formData_7 = new FormData();
         formData_7.bottom = new FormAttachment(100, -5);
         formData_7.right = new FormAttachment(100, -5);
         formData_7.top = new FormAttachment(0, 5);
         formData_7.left = new FormAttachment(59, 0);
         paraList.setLayoutData(formData_7);
         _paraListViewer.setInput(new Object());

         _paraListViewer.addSelectionChangedListener(
                 new ISelectionChangedListener()
                 {
                     public void selectionChanged(SelectionChangedEvent event)
                     {
                         if ( !_paraListViewer.getSelection().isEmpty() )
                         {
                             _resListViewer.setSelection(StructuredSelection.EMPTY);
                         }
                     }

                 }
         );


         final Composite paraBtnComp = new Composite(paraMapGrp, SWT.NONE);
         final FormData formData_6 = new FormData();
         formData_6.right = new FormAttachment(paraList, -5, SWT.LEFT);
         formData_6.bottom = new FormAttachment(100, -5);
         formData_6.top = new FormAttachment(paraText, 0, SWT.TOP);
         formData_6.left = new FormAttachment(paraText, 5, SWT.RIGHT);
         paraBtnComp.setLayoutData(formData_6);
         paraBtnComp.setLayout(new FormLayout());

         final Button paraMapBtn = new Button(paraBtnComp, SWT.NONE);
         final FormData formData_2 = new FormData();
         formData_2.right = new FormAttachment(100, -5);
         formData_2.top = new FormAttachment(34, 0);
         formData_2.left = new FormAttachment(0, 5);
         paraMapBtn.setLayoutData(formData_2);
         paraMapBtn.setText("->"); //$NON-NLS-1$


         final Button applyBtn = new Button(this, SWT.NONE);
         final FormData formData_11 = new FormData();
         formData_11.bottom = new FormAttachment(100, -5);
         formData_11.right = new FormAttachment(100, -5);
         applyBtn.setLayoutData(formData_11);
         applyBtn.setText(OTDTUIPlugin.getResourceString("MethodMappingConfiguration_apply_button_label")); //$NON-NLS-1$

         applyBtn.addSelectionListener(
             new SelectionAdapter()
             {
                 public void widgetSelected(SelectionEvent evt)
                 {
                     applySelectedMapping();
                 }
             }
         );

         final Group resMapGrp = new Group(this, SWT.NONE);
         resMapGrp.setText(OTDTUIPlugin.getResourceString("MethodMappingConfiguration_result_mapping_group_title")); //$NON-NLS-1$
         final FormData formData_4 = new FormData();
         formData_4.bottom = new FormAttachment(applyBtn, -5, SWT.TOP);
         formData_4.right = new FormAttachment(100, -5);
         formData_4.top = new FormAttachment(paraMapGrp, 5, SWT.BOTTOM);
         formData_4.left = new FormAttachment(0, 5);
         resMapGrp.setLayoutData(formData_4);
         resMapGrp.setLayout(new FormLayout());

         _resListViewer = new ListViewer(resMapGrp, SWT.BORDER);
         _resListViewer.setContentProvider(new ResultContentProvider());
         final List resList = _resListViewer.getList();
         final FormData formData_8 = new FormData();
         formData_8.bottom = new FormAttachment(100, -5);
         formData_8.right = new FormAttachment(43, 0);
         formData_8.top = new FormAttachment(0, 5);
         formData_8.left = new FormAttachment(0, 5);
         resList.setLayoutData(formData_8);
         _resListViewer.setInput(new Object());

         _resListViewer.addSelectionChangedListener(
                 new ISelectionChangedListener()
                 {
                     public void selectionChanged(SelectionChangedEvent event)
                     {
                         if ( !_resListViewer.getSelection().isEmpty() )
                         {
                             _paraListViewer.setSelection(StructuredSelection.EMPTY);
                         }
                     }

                 }
         );

         _resTextViewer = new TextViewer(resMapGrp, SWT.BORDER);
         final StyledText resText = _resTextViewer.getTextWidget();
         final FormData formData_10 = new FormData();
         formData_10.bottom = new FormAttachment(100, -5);
         formData_10.right = new FormAttachment(100, -5);
         formData_10.top = new FormAttachment(0, 5);
         formData_10.left = new FormAttachment(59, 0);
         resText.setLayoutData(formData_10);
         _resTextViewer.setInput(new Object());

         final Composite resBtnComp = new Composite(resMapGrp, SWT.NONE);
         final FormData formData_3 = new FormData();
         formData_3.right = new FormAttachment(resText, -5, SWT.LEFT);
         formData_3.bottom = new FormAttachment(100, -5);
         formData_3.top = new FormAttachment(resText, 0, SWT.TOP);
         formData_3.left = new FormAttachment(resList, 5, SWT.RIGHT);
         resBtnComp.setLayoutData(formData_3);
         resBtnComp.setLayout(new FormLayout());

         final Button resMapBtn = new Button(resBtnComp, SWT.NONE);
         final FormData formData_9 = new FormData();
         formData_9.right = new FormAttachment(100, -5);
         formData_9.top = new FormAttachment(0, 5);
         formData_9.left = new FormAttachment(0, 5);
         resMapBtn.setLayoutData(formData_9);
         resMapBtn.setText("<-"); //$NON-NLS-1$
         //
     }

     public void dispose()
     {
         super.dispose();
     }

     protected void checkSubclass()
     {}


     private void applySelectedMapping()
     {
         IStructuredSelection selection = null;
         String identifier = null;
         String expr = null;

         selection = (IStructuredSelection)_paraListViewer.getSelection();
         if (!selection.isEmpty())
         {
             identifier = (String)selection.getFirstElement();
             expr = _paraTextViewer.getDocument().get();
             if (!expr.equals(EMPTY_TEXT))
             {
                 updateParameterMapping(identifier, expr);
             }
         }

         selection = (IStructuredSelection)_resListViewer.getSelection();
         if (!selection.isEmpty())
         {
             identifier = (String)selection.getFirstElement();
             expr = _resTextViewer.getDocument().get();
             if (!expr.equals(EMPTY_TEXT))
             {
                 updateParameterMapping(identifier, expr);
             }
         }

         _bindingEditor.refresh();
     }


     protected void setFocus(ParameterMapping paraMap, CalloutMappingDeclaration callout)
     {
         setMethodBinding(callout);
         setParameterMapping(paraMap);
     }

     protected void setParameterMapping(ParameterMapping paraMap)
     {
         if (paraMap == null)
         {
             _resTextViewer.setDocument(new Document(EMPTY_TEXT));
             _paraTextViewer.setDocument(new Document(EMPTY_TEXT));
             clearSelections();
         	return;
         }

         String identifier = paraMap.getIdentifier().getIdentifier();
         ASTNode expr = paraMap.getExpression();
         if (paraMap.hasResultFlag())
         {
             _paraListViewer.setSelection(StructuredSelection.EMPTY);
             _resListViewer.setSelection(new StructuredSelection(identifier));
             _resTextViewer.setDocument(new Document(expr.toString()));
         }
         else
         {
             _resListViewer.setSelection(StructuredSelection.EMPTY);
             _paraListViewer.setSelection(new StructuredSelection(identifier));
             _paraTextViewer.setDocument(new Document(expr.toString()));
         }
     }

     protected void setMethodBinding(CalloutMappingDeclaration callout)
     {
         _callout = callout;
         _methBindLabel.setText(
                 _callout.getRoleMappingElement().toString()
                 + (_callout.isCalloutOverride() ? "=>" : "->") //$NON-NLS-1$ //$NON-NLS-2$
                 + _callout.getBaseMappingElement().toString()
                 );
         _paraListViewer.refresh();
     }

 	protected void updateParameterMapping(String identifier, String expr)
     {
         ParameterMapping paraMap = null;
         Expression exprNode = ASTNodeCreator.createExpression(_callout.getAST(), expr);

         // if parsing of expr fails, ignore this parameter mapping
         if (exprNode == null)
         {
             return;
         }

         java.util.List<ParameterMapping> paraMaps = _callout.getParameterMappings();
         for (Iterator<ParameterMapping> mapIdx = paraMaps.iterator(); mapIdx.hasNext();)
         {
             ParameterMapping mapping = mapIdx.next();
             if (identifier.equals(mapping.getIdentifier()))
             {
                 paraMap = mapping;
                 break;
             }

         }

         if (paraMap == null)
         {
             paraMap = _callout.getAST().newParameterMapping();
             paraMaps.add(paraMap);
         }

         paraMap.setIdentifier(_callout.getAST().newSimpleName(identifier));
         if (identifier.equals("result")) //$NON-NLS-1$
         {
             paraMap.setDirection("<-"); //$NON-NLS-1$
             paraMap.setResultFlag(true);
         }
         else
         {
             paraMap.setDirection("->"); //$NON-NLS-1$
             paraMap.setResultFlag(false);
         }

         paraMap.setExpression(exprNode);
     }


     public void clearSelections()
     {
         _resListViewer.setSelection(StructuredSelection.EMPTY);
         _paraListViewer.setSelection(StructuredSelection.EMPTY);
         _resTextViewer.setSelection(StructuredSelection.EMPTY);
         _paraTextViewer.setSelection(StructuredSelection.EMPTY);
     }

 }
	/**********************************************************************
	* This file is part of "Object Teams Development Tooling"-Software
	*
	* Copyright 2005, 2007 Fraunhofer Gesellschaft, Munich, Germany,
	* for its Fraunhofer Institute for Computer Architecture and Software
	* Technology (FIRST), Berlin, Germany and Technical University Berlin,
	* Germany.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Please visit http://www.eclipse.org/objectteams for updates and contact.
	*
	* Contributors:
	* Fraunhofer FIRST - Initial API and implementation
	* Technical University Berlin - Initial API and implementation
	**********************************************************************/
	package org.eclipse.objectteams.otdt.internal.ui.bindingeditor;

	import java.util.ArrayList;
	import java.util.Iterator;

	import org.eclipse.jdt.core.dom.ASTNode;
	import org.eclipse.jdt.core.dom.CalloutMappingDeclaration;
	import org.eclipse.jdt.core.dom.Expression;
	import org.eclipse.jdt.core.dom.FieldAccessSpec;
	import org.eclipse.jdt.core.dom.MethodMappingElement;
	import org.eclipse.jdt.core.dom.MethodSpec;
	import org.eclipse.jdt.core.dom.ParameterMapping;
	import org.eclipse.jdt.core.dom.SingleVariableDeclaration;
	import org.eclipse.jdt.core.dom.rewrite.ASTNodeCreator;
	import org.eclipse.jface.text.Document;
	import org.eclipse.jface.text.TextViewer;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.IStructuredContentProvider;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.ListViewer;
	import org.eclipse.jface.viewers.SelectionChangedEvent;
	import org.eclipse.jface.viewers.StructuredSelection;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.objectteams.otdt.ui.OTDTUIPlugin;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.StyledText;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.layout.FormAttachment;
	import org.eclipse.swt.layout.FormData;
	import org.eclipse.swt.layout.FormLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.List;

	/**
	* This is a configuration element for the
	* parameter mappings of a callout mapping.
	*
	* A parameter mapping: expression "->" identifier
	* A result mapping: "result" "<-" expression
	*
	* @author jwloka
	*/
	public class CalloutMappingConfiguration extends Group
	{
	// Method mapping declaration context
	private CalloutMappingDeclaration _callout;

	// parameter mapping
	private ListViewer _paraListViewer;
	private TextViewer _paraTextViewer;

	// result mapping
	private ListViewer _resListViewer;
	private TextViewer _resTextViewer;

	private BindingEditor _bindingEditor;
	private Label _methBindLabel;

	private final Object[] EMPTY = new Object[0];
	private static final String EMPTY_TEXT = ""; //$NON-NLS-1$


	class BaseMethodParameterContentProvider implements IStructuredContentProvider
	{
	public Object[] getElements(Object inputElement)
	{
	if (_callout == null)
	{
	return EMPTY;
	}

	java.util.List<String> result = new ArrayList<String>();
	MethodMappingElement baseElement = _callout.getBaseMappingElement();
	if (baseElement instanceof FieldAccessSpec) {
	result.add(baseElement.getName().toString());
	} else if (baseElement instanceof MethodSpec) {
	MethodSpec methSpec = (MethodSpec)baseElement;
	for (Iterator paramIdx = methSpec.parameters().iterator(); paramIdx.hasNext();) {
	SingleVariableDeclaration param = (SingleVariableDeclaration) paramIdx.next();
	result.add(param.getName().toString());
	}
	}
	return result.toArray();

	}

	public void dispose()
	{}

	public void inputChanged(Viewer viewer, Object oldInput, Object newInput)
	{}
	}


	class ResultContentProvider implements IStructuredContentProvider
	{
	public Object[] getElements(Object inputElement)
	{
	return new Object[] { "result" }; //$NON-NLS-1$
	}

	public void dispose()
	{}

	public void inputChanged(Viewer viewer, Object oldInput, Object newInput)
	{}
	}


	public CalloutMappingConfiguration(Composite parent, int style)
	{
	super(parent, style);
	_bindingEditor = (BindingEditor)parent.getParent();
	setText(OTDTUIPlugin.getResourceString("CalloutMappingConfiguration_dialog_title")); //$NON-NLS-1$
	setLayout(new FormLayout());

	_methBindLabel = new Label(this, SWT.NONE);
	final FormData formData = new FormData();
	formData.right = new FormAttachment(100, -5);
	formData.top = new FormAttachment(0, 5);
	formData.left = new FormAttachment(0, 10);
	_methBindLabel.setLayoutData(formData);
	_methBindLabel.setText(OTDTUIPlugin.getResourceString("MethodMappingConfiguration_no_method_binding_selected")); //$NON-NLS-1$
	final Group paraMapGrp = new Group(this, SWT.NONE);
	paraMapGrp.setText(OTDTUIPlugin.getResourceString("MethodMappingConfiguration_param_mapping_group_title")); //$NON-NLS-1$
	final FormData formData_1 = new FormData();
	formData_1.bottom = new FormAttachment(50, 0);
	formData_1.right = new FormAttachment(100, -5);
	formData_1.top = new FormAttachment(0, 28);
	formData_1.left = new FormAttachment(0, 5);
	paraMapGrp.setLayoutData(formData_1);
	paraMapGrp.setLayout(new FormLayout());

	// left side, expression
	_paraTextViewer = new TextViewer(paraMapGrp, SWT.BORDER);
	_paraTextViewer.setDocument(new Document());
	final StyledText paraText = _paraTextViewer.getTextWidget();
	final FormData formData_5 = new FormData();
	formData_5.right = new FormAttachment(43, 0);
	formData_5.bottom = new FormAttachment(100, -5);
	formData_5.top = new FormAttachment(0, 5);
	formData_5.left = new FormAttachment(0, 5);
	paraText.setLayoutData(formData_5);
	_paraTextViewer.setInput(new Object());

	// right side, identiers
	_paraListViewer = new ListViewer(paraMapGrp, SWT.BORDER);
	_paraListViewer.setContentProvider(new BaseMethodParameterContentProvider());
	final List paraList = _paraListViewer.getList();
	final FormData formData_7 = new FormData();
	formData_7.bottom = new FormAttachment(100, -5);
	formData_7.right = new FormAttachment(100, -5);
	formData_7.top = new FormAttachment(0, 5);
	formData_7.left = new FormAttachment(59, 0);
	paraList.setLayoutData(formData_7);
	_paraListViewer.setInput(new Object());

	_paraListViewer.addSelectionChangedListener(
	new ISelectionChangedListener()
	{
	public void selectionChanged(SelectionChangedEvent event)
	{
	if ( !_paraListViewer.getSelection().isEmpty() )
	{
	_resListViewer.setSelection(StructuredSelection.EMPTY);
	}
	}

	}
	);



	final Composite paraBtnComp = new Composite(paraMapGrp, SWT.NONE);
	final FormData formData_6 = new FormData();
	formData_6.right = new FormAttachment(paraList, -5, SWT.LEFT);
	formData_6.bottom = new FormAttachment(100, -5);
	formData_6.top = new FormAttachment(paraText, 0, SWT.TOP);
	formData_6.left = new FormAttachment(paraText, 5, SWT.RIGHT);
	paraBtnComp.setLayoutData(formData_6);
	paraBtnComp.setLayout(new FormLayout());

	final Button paraMapBtn = new Button(paraBtnComp, SWT.NONE);
	final FormData formData_2 = new FormData();
	formData_2.right = new FormAttachment(100, -5);
	formData_2.top = new FormAttachment(34, 0);
	formData_2.left = new FormAttachment(0, 5);
	paraMapBtn.setLayoutData(formData_2);
	paraMapBtn.setText("->"); //$NON-NLS-1$


	final Button applyBtn = new Button(this, SWT.NONE);
	final FormData formData_11 = new FormData();
	formData_11.bottom = new FormAttachment(100, -5);
	formData_11.right = new FormAttachment(100, -5);
	applyBtn.setLayoutData(formData_11);
	applyBtn.setText(OTDTUIPlugin.getResourceString("MethodMappingConfiguration_apply_button_label")); //$NON-NLS-1$

	applyBtn.addSelectionListener(
	new SelectionAdapter()
	{
	public void widgetSelected(SelectionEvent evt)
	{
	applySelectedMapping();
	}
	}
	);

	final Group resMapGrp = new Group(this, SWT.NONE);
	resMapGrp.setText(OTDTUIPlugin.getResourceString("MethodMappingConfiguration_result_mapping_group_title")); //$NON-NLS-1$
	final FormData formData_4 = new FormData();
	formData_4.bottom = new FormAttachment(applyBtn, -5, SWT.TOP);
	formData_4.right = new FormAttachment(100, -5);
	formData_4.top = new FormAttachment(paraMapGrp, 5, SWT.BOTTOM);
	formData_4.left = new FormAttachment(0, 5);
	resMapGrp.setLayoutData(formData_4);
	resMapGrp.setLayout(new FormLayout());

	_resListViewer = new ListViewer(resMapGrp, SWT.BORDER);
	_resListViewer.setContentProvider(new ResultContentProvider());
	final List resList = _resListViewer.getList();
	final FormData formData_8 = new FormData();
	formData_8.bottom = new FormAttachment(100, -5);
	formData_8.right = new FormAttachment(43, 0);
	formData_8.top = new FormAttachment(0, 5);
	formData_8.left = new FormAttachment(0, 5);
	resList.setLayoutData(formData_8);
	_resListViewer.setInput(new Object());

	_resListViewer.addSelectionChangedListener(
	new ISelectionChangedListener()
	{
	public void selectionChanged(SelectionChangedEvent event)
	{
	if ( !_resListViewer.getSelection().isEmpty() )
	{
	_paraListViewer.setSelection(StructuredSelection.EMPTY);
	}
	}

	}
	);

	_resTextViewer = new TextViewer(resMapGrp, SWT.BORDER);
	final StyledText resText = _resTextViewer.getTextWidget();
	final FormData formData_10 = new FormData();
	formData_10.bottom = new FormAttachment(100, -5);
	formData_10.right = new FormAttachment(100, -5);
	formData_10.top = new FormAttachment(0, 5);
	formData_10.left = new FormAttachment(59, 0);
	resText.setLayoutData(formData_10);
	_resTextViewer.setInput(new Object());

	final Composite resBtnComp = new Composite(resMapGrp, SWT.NONE);
	final FormData formData_3 = new FormData();
	formData_3.right = new FormAttachment(resText, -5, SWT.LEFT);
	formData_3.bottom = new FormAttachment(100, -5);
	formData_3.top = new FormAttachment(resText, 0, SWT.TOP);
	formData_3.left = new FormAttachment(resList, 5, SWT.RIGHT);
	resBtnComp.setLayoutData(formData_3);
	resBtnComp.setLayout(new FormLayout());

	final Button resMapBtn = new Button(resBtnComp, SWT.NONE);
	final FormData formData_9 = new FormData();
	formData_9.right = new FormAttachment(100, -5);
	formData_9.top = new FormAttachment(0, 5);
	formData_9.left = new FormAttachment(0, 5);
	resMapBtn.setLayoutData(formData_9);
	resMapBtn.setText("<-"); //$NON-NLS-1$
	//
	}

	public void dispose()
	{
	super.dispose();
	}

	protected void checkSubclass()
	{}



	private void applySelectedMapping()
	{
	IStructuredSelection selection = null;
	String identifier = null;
	String expr = null;

	selection = (IStructuredSelection)_paraListViewer.getSelection();
	if (!selection.isEmpty())
	{
	identifier = (String)selection.getFirstElement();
	expr = _paraTextViewer.getDocument().get();
	if (!expr.equals(EMPTY_TEXT))
	{
	updateParameterMapping(identifier, expr);
	}
	}

	selection = (IStructuredSelection)_resListViewer.getSelection();
	if (!selection.isEmpty())
	{
	identifier = (String)selection.getFirstElement();
	expr = _resTextViewer.getDocument().get();
	if (!expr.equals(EMPTY_TEXT))
	{
	updateParameterMapping(identifier, expr);
	}
	}

	_bindingEditor.refresh();
	}


	protected void setFocus(ParameterMapping paraMap, CalloutMappingDeclaration callout)
	{
	setMethodBinding(callout);
	setParameterMapping(paraMap);
	}

	protected void setParameterMapping(ParameterMapping paraMap)
	{
	if (paraMap == null)
	{
	_resTextViewer.setDocument(new Document(EMPTY_TEXT));
	_paraTextViewer.setDocument(new Document(EMPTY_TEXT));
	clearSelections();
	return;
	}

	String identifier = paraMap.getIdentifier().getIdentifier();
	ASTNode expr = paraMap.getExpression();
	if (paraMap.hasResultFlag())
	{
	_paraListViewer.setSelection(StructuredSelection.EMPTY);
	_resListViewer.setSelection(new StructuredSelection(identifier));
	_resTextViewer.setDocument(new Document(expr.toString()));
	}
	else
	{
	_resListViewer.setSelection(StructuredSelection.EMPTY);
	_paraListViewer.setSelection(new StructuredSelection(identifier));
	_paraTextViewer.setDocument(new Document(expr.toString()));
	}
	}

	protected void setMethodBinding(CalloutMappingDeclaration callout)
	{
	_callout = callout;
	_methBindLabel.setText(
	_callout.getRoleMappingElement().toString()
	+ (_callout.isCalloutOverride() ? "=>" : "->") //$NON-NLS-1$ //$NON-NLS-2$
	+ _callout.getBaseMappingElement().toString()
	);
	_paraListViewer.refresh();
	}

	protected void updateParameterMapping(String identifier, String expr)
	{
	ParameterMapping paraMap = null;
	Expression exprNode = ASTNodeCreator.createExpression(_callout.getAST(), expr);

	// if parsing of expr fails, ignore this parameter mapping
	if (exprNode == null)
	{
	return;
	}

	java.util.List<ParameterMapping> paraMaps = _callout.getParameterMappings();
	for (Iterator<ParameterMapping> mapIdx = paraMaps.iterator(); mapIdx.hasNext();)
	{
	ParameterMapping mapping = mapIdx.next();
	if (identifier.equals(mapping.getIdentifier()))
	{
	paraMap = mapping;
	break;
	}

	}

	if (paraMap == null)
	{
	paraMap = _callout.getAST().newParameterMapping();
	paraMaps.add(paraMap);
	}

	paraMap.setIdentifier(_callout.getAST().newSimpleName(identifier));
	if (identifier.equals("result")) //$NON-NLS-1$
	{
	paraMap.setDirection("<-"); //$NON-NLS-1$
	paraMap.setResultFlag(true);
	}
	else
	{
	paraMap.setDirection("->"); //$NON-NLS-1$
	paraMap.setResultFlag(false);
	}

	paraMap.setExpression(exprNode);
	}


	public void clearSelections()
	{
	_resListViewer.setSelection(StructuredSelection.EMPTY);
	_paraListViewer.setSelection(StructuredSelection.EMPTY);
	_resTextViewer.setSelection(StructuredSelection.EMPTY);
	_paraTextViewer.setSelection(StructuredSelection.EMPTY);
	}

	}