orgeclipseuiIObjectActionDelegate in Java

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orgeclipseuiIObjectActionDelegate
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and click Finish to create the class The generated class contains three methods, two of which are applicable for the action Leave the implementation of setActivePart empty This method can be used to change the enablement of the action depending on the workbench context in which an action is called In this case you want the action to run the same regardless of whether it was called from the WSDL editor or the outline view (That s right By contributing this action to the IBinding interface, the action will be available from both the editor design view and the outline view) The two methods you will implement are run and selectionChanged The selectionChanged method will be called when a user hovers over the menu item This method provides two parameters, action and selection The action parameter allows you to change the enablement of the generate binding action The generate binding action should always be enabled so you will not make use of this parameter (You could also have chosen to disable the action if, for example, the WTP SOAP binding elements already exist) The selection parameter provides you with the object for which the context menu was selected In this case, because you specified in your extension definition that the action should only be available for objects of the type
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CHAPTER 14 Creating WSDL Extensions
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orgeclipsewstwsdluiinternalasdfacadeIBinding
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the selection will always contain the binding element Store the selection so you can retrieve the binding element when the action is run The guts of your action are performed in the run method This is where you will modify the model, adding the WTP SOAP binding content This method again provides the action parameter so you can change the enablement As before, you can disregard the action parameter Implement the BindingGenerationAction class as shown in Example 1413
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Example 1413 Listing of GenerateBindingActionjava
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package orgeclipsewtpwsdlextensions; import import import import import import import import import import import import orgeclipseemfcommonnotifyAdapter; orgeclipsejfaceactionIAction; orgeclipsejfaceviewersISelection; orgeclipsejfaceviewersStructuredSelection; orgeclipseuiIObjectActionDelegate; orgeclipseuiIWorkbenchPart; orgeclipsewstwsdlBinding; orgeclipsewstwsdluiinternalasdfacadeIBinding; orgw3cdomDocument; orgw3cdomElement; orgw3cdomNode; orgw3cdomNodeList;
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public class BindingGenerationAction implements IObjectActionDelegate { private StructuredSelection selection = null; public BindingGenerationAction() { super(); } public void setActivePart(IAction action, IWorkbenchPart targetPart) { // Do nothing } public void run(IAction action) { Object obj = ((StructuredSelection)selection)getFirstElement(); if(obj instanceof IBinding) { Binding bindingModelObj = (Binding)((Adapter)obj)getTarget(); Element domBindingElement = bindingModelObjgetElement(); Document doc = domBindingElementgetOwnerDocument(); Element docElem = docgetDocumentElement(); docElemsetAttribute("xmlns:wtpsoap", "http://eclipsewtporg/wsdl/soap/"); Element soapBinding = doccreateElementNS("http://eclipsewtporg/wsdl/soap/", "wtpsoap:binding"); soapBindingsetAttribute("style", "document");
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soapBindingsetAttribute("transport", "http://schemasxmlsoaporg/soap/http"); Node firstBindingChild = domBindingElementgetFirstChild(); if(firstBindingChild == null) { domBindingElementappendChild(soapBinding); } else { domBindingElementinsertBefore(soapBinding, firstBindingChild); } NodeList operations = domBindingElementgetElementsByTagNameNS( "http://schemasxmlsoaporg/wsdl/", "operation"); int numOperations = operationsgetLength(); for(int i = 0; i < numOperations; i++) { Element operation = (Element)operationsitem(i); String operationName = operationgetAttribute("name"); Element soapOperation = doccreateElementNS("http://eclipsewtporg/wsdl/soap/", "wtpsoap:operation"); String soapAction = docElemgetAttribute("targetNamespace"); if(!soapActionendsWith("/")) soapAction += "/"; soapAction += operationName; soapOperationsetAttribute("soapAction", soapAction); Node firstOperationChild = operationgetFirstChild(); if(firstOperationChild == null) { operationappendChild(soapOperation); } else { operationinsertBefore(soapOperation, firstOperationChild); } NodeList inputs = domBindingElementgetElementsByTagNameNS( "http://schemasxmlsoaporg/wsdl/", "input"); int numInputs = inputsgetLength(); for(int j = 0; j < numInputs; j++) { Element input = (Element)inputsitem(i); Element soapBody = doccreateElementNS("http://eclipsewtporg/wsdl/soap/", "wtpsoap:body"); soapBodysetAttribute("use", "literal"); Node firstInputChild = inputgetFirstChild(); if(firstInputChild == null) { inputappendChild(soapBody); } else { inputinsertBefore(soapBody, firstInputChild); } }
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CHAPTER 14 Creating WSDL Extensions
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NodeList outputs = domBindingElementgetElementsByTagNameNS( "http://schemasxmlsoaporg/wsdl/", "output"); int numOutputs = outputsgetLength(); for(int j = 0; j < numOutputs; j++) { Element output = (Element)outputsitem(i); Element soapBody = doccreateElementNS("http://eclipsewtporg/wsdl/soap/", "wtpsoap:body"); soapBodysetAttribute("use", "literal"); Node firstOutputChild = outputgetFirstChild(); if(firstOutputChild == null) { outputappendChild(soapBody); } else { outputinsertBefore(soapBody, firstOutputChild); } } } } } public void selectionChanged(IAction action, ISelection selection) { if(selection instanceof StructuredSelection) { thisselection = (StructuredSelection)selection; } } }
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As the implementation shows, the selectionChanged method stores the selection Only StructuredSelections are stored as they are the only type of selections that contain the object for which the action will run The run method in turn checks that the object is indeed an
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