noteeditpart.java

对eclipse gef进行封装,可以生成图形化编辑器

/*******************************************************************************
 * $Header: /cvsroot/EOS6/work_dir/niegy/com.primeton.studio.gef.ui/src/com/primeton/studio/gef/ui/parts/NoteEditPart.java,v 1.2 2006/12/30 02:45:04 niegy Exp $
 * $Revision: 1.2 $
 * $Date: 2006/12/30 02:45:04 $
 *
 *==============================================================================
 *
 * Copyright (c) 2001-2006 Primeton Technologies, Ltd.
 * All rights reserved.
 * 
 * Created on 2006-12-5
 *******************************************************************************/


package com.primeton.studio.gef.ui.parts;

import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.gef.DragTracker;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.EditPolicy;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.gef.Request;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.UnexecutableCommand;
import org.eclipse.gef.editpolicies.DirectEditPolicy;
import org.eclipse.gef.editpolicies.LayoutEditPolicy;
import org.eclipse.gef.requests.CreateRequest;
import org.eclipse.gef.requests.DirectEditRequest;
import org.eclipse.gef.tools.DragEditPartsTracker;

import com.primeton.studio.gef.core.CorePackage;
import com.primeton.studio.gef.core.NodeElement;
import com.primeton.studio.gef.core.Note;
import com.primeton.studio.gef.core.TNodeType;
import com.primeton.studio.gef.ui.commands.ChangeDescriptionCommand;
import com.primeton.studio.gef.ui.commands.NodeCreateCommand;
import com.primeton.studio.gef.ui.editor.AbstractGraphicalEditor;
import com.primeton.studio.gef.ui.figure.NoteFigure;

/**
 * TODO 此处填写 class 信息
 *
 * @author niegy (mailto:[e-mail])
 */
/*
 * 修改历史
 * $Log: NoteEditPart.java,v $
 * Revision 1.2  2006/12/30 02:45:04  niegy
 * 重构代码
 *
 * Revision 1.1  2006/12/08 07:04:32  niegy
 * 重构代码
 * 
 */
public class NoteEditPart extends BaseEditPart {

	/**
	 * @param editor
	 */
	public NoteEditPart(AbstractGraphicalEditor editor) {
		super(editor);
		// TODO Auto-generated constructor stub
	}

	/* (non-Javadoc)
	 * @see com.primeton.studio.gef.ui.parts.BaseEditPart#createDirectEditPolicy()
	 */
	protected DirectEditPolicy createDirectEditPolicy() {
		// TODO Auto-generated method stub
		return new DirectEditPolicy() {
			protected Command getDirectEditCommand(DirectEditRequest request) {
				return new ChangeDescriptionCommand((Note)getModel(), 
						(String)request.getCellEditor().getValue());
			}
			protected void showCurrentEditValue(DirectEditRequest request) {
				((NoteFigure)getFigure()).setText(
						(String)request.getCellEditor().getValue());
				getFigure().getUpdateManager().performUpdate();
			}
		};
	}
	
	protected IFigure createFigure() {
		return new NoteFigure();
	}

	String getDirectEditText() {
		return ((NoteFigure)getFigure()).getText();
	}

	protected void refreshVisuals() {
		super.refreshVisuals();
//		Rectangle constraint = new Rectangle(0, 0, -1, -1);
//		Point point = new Point(getCastedModel().getLocation().getX(),getCastedModel().getLocation().getY());
//		constraint.setLocation(point);
//		constraint.width = getCastedModel().getSize().getWidth();
//		((GraphicalEditPart)getParent()).setLayoutConstraint(this, getFigure(), constraint);
		((NoteFigure)getFigure()).setText(((Note)getModel()).getContent());
	}

	/* (non-Javadoc)
	 * @see com.primeton.studio.gef.ui.parts.ChildEditPart#notifyChanged(org.eclipse.emf.common.notify.Notification)
	 */
	public void notifyChanged(Notification notification) {
		// TODO Auto-generated method stub
//		int type = notification.getEventType();
//		int featureId = notification.getFeatureID(CorePackage.class);
//	    switch(type) {
//	        case Notification.SET:
//	            switch(featureId) {
//	            case CorePackage.NOTE__CONTENT:
//	            	refreshVisuals();
//	                  break;
//	            }
//	    }
		super.notifyChanged(notification);
	}

	/* (non-Javadoc)
	 * @see com.primeton.studio.gef.ui.parts.BaseEditPart#createEditPolicies()
	 */
	protected void createEditPolicies() {
		// TODO Auto-generated method stub
		super.createEditPolicies();
		installEditPolicy(EditPolicy.SELECTION_FEEDBACK_ROLE, null);
	}
	
	/* (non-Javadoc)
	 * @see com.primeton.studio.gef.ui.parts.BaseEditPart#getDragTracker(org.eclipse.gef.Request)
	 */	
	public DragTracker getDragTracker(Request request) {
		// TODO Auto-generated method stub
		return new DragEditPartsTracker(this);
	}
}