exceptiondetailsection.java

来自「一个eclipse插件源代码。用于web开发」· Java 代码 · 共 369 行

/*
 * $Header: /home/cvs/WEBPUMP2.0/WebPumpIDE_Src/WebPumpIDE/src/com/webpump/ui/exception/ExceptionDetailSection.java,v 1.1.1.1 2004/07/01 09:07:45 wang_j Exp $
 * $Revision: 1.1.1.1 $
 * $Date: 2004/07/01 09:07:45 $
 *
 * ====================================================================
 *
 * The NanJing HopeRun(IT-FOREST) Software License, Version 2.0.0
 *
 * Copyright 2003-2004 by NanJing HopeRun(IT-FOREST) Information System Co., Ltd, CHINA and
 *                        IT Forest Corporation
 * All rights reserved.
 *
 * This software is the confidential and proprietary information of
 * HopeRun(IT-FOREST) Information System Co., Ltd, CHINA and IT Forest Corporation.
 * You shall not disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into with
 * HopeRun(IT-FOREST) Information System Co., Ltd, CHINA and IT Forest Corporation.
 */
 
package com.webpump.ui.exception;

import org.eclipse.jface.viewers.*;
import org.eclipse.pde.core.*;
import org.eclipse.pde.internal.ui.elements.DefaultContentProvider;
import org.eclipse.pde.internal.ui.parts.TreePart;

import com.webpump.ui.exception.data.*;
import com.webpump.ui.perspective.MacroResource;
import com.webpump.ui.perspective.WebpumpIDEPlugin;
import com.webpump.ui.base.data.*;
import com.webpump.ui.base.gui.*;

/**
 * Class for the tree part of the exception editor.
 * 
 * @author zhao_f
 * @version 2.0.0 2004-2-13
 */
public class ExceptionDetailSection
	extends BaseTreeSection{
	
	/**
	 * Class for providing the content of the tree part
	 */	
	class TreeContentProvider
		extends DefaultContentProvider
		implements ITreeContentProvider {
	
        /**
         * Get the Children of the node
         * @param parent the node who owns the children
         */	
		public Object[] getChildren(Object parent) {
			Object[] children = null;
			if ((parent instanceof BaseObject)
				&&(!(parent instanceof ExceptionInfo))
				&&(!(parent instanceof ExceptionName))
				) {
				return ((BaseDataObject)parent).getChild();
			}

			if (children == null)
				children = new Object[0];
			return children;
		}
		
		/**
		 * Identify whether the node has children
		 */
		public boolean hasChildren(Object parent) {
			return getChildren(parent).length > 0;
		}
		
		/**
		 * Get the parent of the node
		 * @param child the node who has a parent
		 */
		public Object getParent(Object child) {
			if (child instanceof BaseObject)
				return ((BaseObject) child).getParent();
			return null;
		}
		
		/**
		 * Get all the children of the node in the form of Object group
		 * @param parent the node who owns children
		 */
		public Object[] getElements(Object parent) {
			return getChildren(parent);
		}
	}
	
	/**
	 * the constructor which define the content of this part
	 * @param page the page in which the part lies
	 */			
	public ExceptionDetailSection(BasePage page) {
		//Define the layout of the part using the super class's constructor
		super(page, new String[] {"<<",null,">>"});
		//Set the head text of this part
		this.setHeaderText(WebpumpIDEPlugin.getResourceString(MacroResource.EXCEPTIONDETAILSECTION_EXCEPTION_DEFINITION));
		handleDefaultButton = false;

	}
	
	/**
	 * Initialize the layout of this part
	 * @param input the input in "exception.xml"
	 */
	public void initialize(Object input) {
		ExceptionModel model = (ExceptionModel) input;
		//Initialize this part by inputting the model's ExceptionConfig in it  
		exceptionTree.setInput(((ExceptionList)(model.getDataObject())).getExceptionConfig());
		boolean editable = model.isEditable();
		setReadOnly(!editable);
		TreePart treePart = getTreePart();
		treePart.setButtonEnabled(0, editable);
		treePart.setButtonEnabled(2, false);
		treePart.setButtonEnabled(3, false);
		model.addModelChangedListener(this);


	}	
	
	/**
	 * Dispose this part
	 */
	public void dispose() {
		//Get the model on this part
		ExceptionModel model = (ExceptionModel) getFormPage().getModel();
		//Remove the Model Changed Listener on this model
		model.removeModelChangedListener(this);
		super.dispose();
	}
		
	public void modelChanged(IModelChangedEvent event) {
		if (event.getChangeType() == IModelChangedEvent.WORLD_CHANGED) {
			ExceptionModel model = (ExceptionModel) getFormPage().getModel();
			exceptionTree.setInput(((ExceptionList)(model.getDataObject())).getExceptionConfig());
			exceptionTree.refresh();
			return;
		}
		//Get the changed object
		Object changeObject = event.getChangedObjects()[0];
		//Define the action to the tableViewer if the changed object is an instance of ExceptionName
		if (changeObject instanceof ExceptionName
			&& event.getChangeType() == IModelChangedEvent.CHANGE) {
			IStructuredSelection sel =
				(IStructuredSelection) exceptionTree.getSelection();
			BaseObject extension =
				(BaseObject) sel.getFirstElement();
				exceptionTree.refresh();
				exceptionTree.setSelection(new StructuredSelection(extension));
			return;
		}
		//Define the action to the tableViewer if the changed object is an instance of ExceptionList
		if (!(changeObject instanceof ExceptionList)) {
			BaseObject pobj = (BaseObject) changeObject;
			BaseObject parent = pobj.getParent();
			
            ////Add a new element in the tableViewer if the changed type is insert
			if (event.getChangeType() == IModelChangedEvent.INSERT) {
				exceptionTree.add(parent, pobj);

			}
			//Delete an element from the table viewer if the changed type is remove
			 else if (event.getChangeType() == IModelChangedEvent.REMOVE) {
				exceptionTree.remove(pobj);		 
				
			}
		}
	}	
	
	/** 
	 * Define what to do when selecting one of the botton
	 * @param index a param which indicates the botton which has been selected
	 */
	protected void buttonSelected(int index) {
		if (index == 0)
			handleAdd();
		if (index == 2)
			handleRemove();			
	}
	
	/** 
	 * Define the action when having selected the "add" botton
	 */	
	private void handleAdd() {
		//Get the selected item on the treeViewer
		IStructuredSelection sel =
			(IStructuredSelection) exceptionTree.getSelection();
		BaseObject object = (BaseObject) sel.getFirstElement();
		BaseObject objControl;
		//If the selected item is an instance of ExceptionName, get its parent
		if (object instanceof ExceptionName) 
		{
			objControl = object.getParent() ;
		}
		//If the selected item is an instance of ActionList, get its first child
		if (object instanceof ActionList)
		{
			objControl = (BaseObject)object.getChild()[0]; 
		}
		//If the selected belongs to none of the above, get itself
		else
		{
			objControl = object;
		}
		
		//If the item got above is an instance of GlobalExceptions, add it in the model
		if (objControl instanceof GlobalExceptions)
		{
			ExceptionAllSection objExceptionAllSection = ((ExceptionForm)(getFormPage().getForm())).getExceptionAllSection();
		
			String strSelectName = objExceptionAllSection.getSelectName();			
			ExceptionName objExceptionName =  new ExceptionName();
			((GlobalExceptions)objControl).addException(objExceptionName); 
			objExceptionName.setExceptionName(strSelectName);			
		}
		
        //If the item got above is an instance of ActionException, add it in the model
		if (objControl instanceof ActionException)
		{
			ExceptionAllSection objExceptionAllSection = ((ExceptionForm)(getFormPage().getForm())).getExceptionAllSection();
		
			String strSelectName = objExceptionAllSection.getSelectName();			
			ExceptionName objExceptionName =  new ExceptionName();
			
			((ActionException)objControl).addException(objExceptionName); 
			objExceptionName.setExceptionName(strSelectName);
		}		
		
		
	}	

	/**
	 * Define the action when having selected the "remove" botton
	 */
	private void handleRemove() {
		//Get the selected item on the treeViewer
		IStructuredSelection sel =
			(IStructuredSelection) exceptionTree.getSelection();
		BaseObject object = (BaseObject) sel.getFirstElement();
		BaseObject objControl = null;
		//If the selected item is an instance of ExceptionInfo, get its parent
		if (object instanceof ExceptionName) 
		{
			objControl = object.getParent() ;
		}
		
		//Remove the item from the exception model as a child of GlobalExceptions
		if (objControl instanceof GlobalExceptions) 
		{
			((GlobalExceptions)objControl).remove((ExceptionName)object);
		}
		
		//Remove the item from the exception model as a child of ActionException
		if (objControl instanceof ActionException) 
		{
			((ActionException)objControl).remove((ExceptionName)object);
		}
		
		
	}	

	/**
	 *  Define the action to the treeViewer after the selection is changed
	 * @param selection the selected item
	 */
	protected void selectionChanged(IStructuredSelection selection) {
		Object item = selection.getFirstElement();
		fireSelectionNotification(item);
		getFormPage().setSelection(selection);
		setButtonStyle(item);
	}

	/**
	 * Set the botton style according to the selection
	 * @param item the selected item
	 */
	public void setButtonStyle(Object item) {
		if (isReadOnly())
			return;
		boolean addEnabled = false;
		boolean removeEnabled = false;
		if (item != null) {
			if (item instanceof GlobalExceptions) {
				addEnabled = true;
				removeEnabled = false;
					
			} else if (item instanceof ActionList) {
				addEnabled = false;
				removeEnabled = false;
			}
			else if (item instanceof ActionException) {
				addEnabled = true;
				removeEnabled = false;
			}
			else if (item instanceof ExceptionName) {
				addEnabled = false;
				removeEnabled = true;
			}			
		}
		
		//Get an object of ExceptionAllSection
		ExceptionAllSection objExceptionAllSection = ((ExceptionForm)(getFormPage().getForm())).getExceptionAllSection();
		
		//Get the Selected item from the table part
		String strSelectName = objExceptionAllSection.getSelectName();
		if (strSelectName==null)
		{
			addEnabled = false;
		}
		
		if(addEnabled == true)
		{
			Object[]  strChild = null;
			if (item instanceof GlobalExceptions) {
				strChild = ((GlobalExceptions)item).getChild();
			}
			
			if (item instanceof ActionException) {
				strChild = ((ActionException)item).getChild();
			}
			
			if (strChild!=null&&strChild.length>0 )
			{
				for (int i=0;i<strChild.length;i++)
				{
					if (strSelectName.equals(((ExceptionName)strChild[i]).toString()))
					{
						addEnabled = false;
						break;
					}
				}
			}
				
		}
				
		//Register the botton style to each botton
		getTreePart().setButtonEnabled(0, addEnabled);
		getTreePart().setButtonEnabled(2, removeEnabled);		
		
	}
	
	/**
	 * Set the botton style
	 */
	public void setButtonStyle() {
		//Get the selected item from the tree viewer
		IStructuredSelection sel =
			(IStructuredSelection) exceptionTree.getSelection();
		Object item = sel.getFirstElement();
		//Set the botton style on the selection		
		setButtonStyle(item);	
		
	}	

	/**
	 * Initialize the images
	 */
	private void initializeImages() {

		
	}

}