| /******************************************************************************* |
| * Copyright (c) 2007 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| /** |
| * |
| */ |
| package org.eclipse.wst.jsdt.web.ui.actions; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| |
| import org.eclipse.jface.action.IAction; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.ui.IObjectActionDelegate; |
| import org.eclipse.ui.IWorkbenchPart; |
| import org.eclipse.ui.IWorkbenchSite; |
| import org.eclipse.wst.jsdt.web.ui.views.contentoutline.JsJfaceNode; |
| |
| /** |
| * |
| |
| * Provisional API: This class/interface is part of an interim API that is still under development and expected to |
| * change significantly before reaching stability. It is being made available at this early stage to solicit feedback |
| * from pioneering adopters on the understanding that any code that uses this API will almost certainly be broken |
| * (repeatedly) as the API evolves. |
| * |
| * @author childsb |
| * |
| */ |
| public class SimpleJSDTActionProxy implements IObjectActionDelegate { |
| public static Object executeMethod(Object handler, String methodName, Class[] paramaterTypes, Object[] paramaterValues) throws SecurityException, |
| NoSuchMethodException, IllegalArgumentException, IllegalAccessException, InvocationTargetException { |
| Class target = handler.getClass(); |
| Method m = target.getMethod(methodName, paramaterTypes); |
| return m.invoke(handler, paramaterValues); |
| } |
| |
| public static JsJfaceNode[] getJsJfaceNodesFromSelection(ISelection selection) { |
| if (selection == null) { |
| return new JsJfaceNode[0]; |
| } |
| ArrayList elements = new ArrayList(); |
| if (selection instanceof IStructuredSelection) { |
| Iterator itt = ((IStructuredSelection) selection).iterator(); |
| while (itt.hasNext()) { |
| Object element = itt.next(); |
| if (element instanceof JsJfaceNode) { |
| elements.add(element); |
| } |
| } |
| return (JsJfaceNode[]) elements.toArray(new JsJfaceNode[elements.size()]); |
| } |
| return new JsJfaceNode[0]; |
| } |
| protected Object actionHandlerTarget; |
| private ISelection currentSelection; |
| protected IAction handlerTargetAction; |
| protected IWorkbenchPart targetWorkbenchPart; |
| |
| public SimpleJSDTActionProxy() {} |
| |
| /* |
| * Most handlers look for WorkBenchSite, so we convert the WorkBenchPart to |
| * WorkBenchSite for init |
| */ |
| protected Object getActionHandler(IAction action) throws IllegalAccessException, NoSuchMethodException, IllegalArgumentException, InstantiationException, |
| InvocationTargetException { |
| /* Target class is cached */ |
| if (handlerTargetAction == action && actionHandlerTarget != null) { |
| return actionHandlerTarget; |
| } |
| Class target = null; |
| String className = getActionHandlerClassName(action); |
| try { |
| target = Class.forName(className); |
| } catch (ClassNotFoundException ex) { |
| System.out.println("Error.. Class target of action handler not found: " + action); |
| System.out.println(Messages.getString("SimpleJSDTActionProxy.0") + ex); //$NON-NLS-1$ |
| } |
| // use the loaded class |
| Class[] types = new Class[] { IWorkbenchSite.class }; |
| Constructor cons = target.getConstructor(types); |
| Object[] args = new Object[] { targetWorkbenchPart.getSite() }; |
| |
| actionHandlerTarget = cons.newInstance(args); |
| handlerTargetAction = action; |
| return actionHandlerTarget; |
| } |
| |
| /* |
| * Default way of determining the action handlers class name.. may be |
| * subclassed/overridden |
| */ |
| protected String getActionHandlerClassName(IAction action) { |
| return action.getId(); |
| } |
| |
| public ISelection getCurrentSelection() { |
| return currentSelection; |
| } |
| |
| public Object[] getRunArgs(IAction action) { |
| return new Object[] { getCurrentSelection() }; |
| } |
| |
| public Class[] getRunArgTypes() { |
| return new Class[] { IStructuredSelection.class }; |
| } |
| |
| public Object[] getSelectionChangeArgs(IAction action, ISelection selection) { |
| return new Object[] { getCurrentSelection() }; |
| } |
| |
| public Class[] getSelectionChangeArgTypes() { |
| return new Class[] { IStructuredSelection.class }; |
| } |
| |
| /* |
| * Generic reflection util method to execute a named method with unknown |
| * paramaters on an object |
| */ |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction) |
| */ |
| public void run(IAction action) { |
| try { |
| Object handler = getActionHandler(action); |
| SimpleJSDTActionProxy.executeMethod(handler, "run", getRunArgTypes(), getRunArgs(action)); //$NON-NLS-1$ |
| } catch (IllegalArgumentException ex) { |
| // TODO Auto-generated catch block |
| ex.printStackTrace(); |
| } catch (SecurityException ex) { |
| // TODO Auto-generated catch block |
| ex.printStackTrace(); |
| } catch (IllegalAccessException ex) { |
| // TODO Auto-generated catch block |
| ex.printStackTrace(); |
| } catch (NoSuchMethodException ex) { |
| // TODO Auto-generated catch block |
| ex.printStackTrace(); |
| } catch (InstantiationException ex) { |
| // TODO Auto-generated catch block |
| ex.printStackTrace(); |
| } catch (InvocationTargetException ex) { |
| // TODO Auto-generated catch block |
| ex.printStackTrace(); |
| } |
| } |
| |
| public void selectionChanged(IAction action, ISelection selection) { |
| currentSelection = selection; |
| if(targetWorkbenchPart==null) return; |
| |
| try { |
| Object handler = getActionHandler(action); |
| SimpleJSDTActionProxy.executeMethod(handler, "selectionChanged", getSelectionChangeArgTypes(), getSelectionChangeArgs(action, selection)); //$NON-NLS-1$ |
| } catch (IllegalArgumentException ex) { |
| // TODO Auto-generated catch block |
| ex.printStackTrace(); |
| } catch (SecurityException ex) { |
| // TODO Auto-generated catch block |
| ex.printStackTrace(); |
| } catch (IllegalAccessException ex) { |
| // TODO Auto-generated catch block |
| ex.printStackTrace(); |
| } catch (NoSuchMethodException ex) { |
| // TODO Auto-generated catch block |
| ex.printStackTrace(); |
| } catch (InstantiationException ex) { |
| // TODO Auto-generated catch block |
| ex.printStackTrace(); |
| } catch (InvocationTargetException ex) { |
| // TODO Auto-generated catch block |
| ex.printStackTrace(); |
| } |
| |
| } |
| |
| public void setActivePart(IAction action, IWorkbenchPart targetPart) { |
| this.targetWorkbenchPart = targetPart; |
| } |
| |
| protected void setSelection(ISelection selection) { |
| this.currentSelection = selection; |
| } |
| } |