modelxylayouteditpolicy.java

来自「一个eclipse插件源代码。用于web开发」· Java 代码 · 共 134 行

/*
 * $Header: /home/cvs/WEBPUMP2.0/WebPumpIDE_Src/WebPumpIDE/src/com/webpump/ui/gefmodule/edit/ModelXYLayoutEditPolicy.java,v 1.1.1.1 2004/07/01 09:07:47 wang_j Exp $
 * $Revision: 1.1.1.1 $
 * $Date: 2004/07/01 09:07:47 $
 *
 * ====================================================================
 *
 * 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.gefmodule.edit;

import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.*;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.editpolicies.NonResizableEditPolicy;

import org.eclipse.gef.requests.CreateRequest;

import com.webpump.ui.gefmodule.command.CreateCommand;
import com.webpump.ui.gefmodule.command.SetConstraintCommand;
import com.webpump.ui.gefmodule.model.ModelSubpart;
import com.webpump.ui.gefmodule.model.Module;
import com.webpump.ui.gefmodule.model.Page;

/**
 * Class for ModelXYLayoutEditPolicy
 * 
 * @author shi_l
 * @version 2.0.0 2004-5-30
 */
public class ModelXYLayoutEditPolicy extends org.eclipse.gef.editpolicies.XYLayoutEditPolicy {
	/*
	protected Command createAddCommand(EditPart childEditPart, Object constraint) {
	
		LogicSubpart part = (LogicSubpart)childEditPart.getModel();
		Rectangle rect = (Rectangle)constraint;
	
		AddCommand add = new AddCommand();
		add.setParent((LogicDiagram)getHost().getModel());
		add.setChild(part);
		add.setLabel(LogicMessages.LogicXYLayoutEditPolicy_AddCommandLabelText);
		add.setDebugLabel("LogicXYEP add subpart");//$NON-NLS-1$
	
		SetConstraintCommand setConstraint = new SetConstraintCommand();
	
		setConstraint.setLocation(rect);
		setConstraint.setPart(part);
		setConstraint.setLabel(LogicMessages.LogicXYLayoutEditPolicy_AddCommandLabelText);
		setConstraint.setDebugLabel("LogicXYEP setConstraint");//$NON-NLS-1$
		return add.chain(setConstraint);
	}*/
	/*
	protected Command createChangeConstraintCommand(EditPart child, Object constraint) {
		SetConstraintCommand locationCommand = new SetConstraintCommand();
		locationCommand.setPart((LogicSubpart)child.getModel());
		locationCommand.setLocation((Rectangle)constraint);
		return locationCommand;
	}
	*/

	/**
	 * create child editpolicy
	 * @param child EditPart
	 * @return EditPolicy
	 */
	protected EditPolicy createChildEditPolicy(EditPart child) {
		if (child instanceof PageEditPart) {
			return new NonResizableEditPolicy();
		}
		return super.createChildEditPolicy(child);
	}

	/**
	 * get create command
	 * @param request CreateRequest
	 * @return command Command
	 */
	protected Command getCreateCommand(CreateRequest request) {
		CreateCommand create = new CreateCommand();
		create.setParent((Module) getHost().getModel());
		create.setChild((ModelSubpart) request.getNewObject());
		Rectangle constraint = (Rectangle) getConstraintFor(request);
		create.setLocation(constraint);
		create.setLabel("create command");
		return create;
	}

	/**
	 * get delete command
	 * @param request Request
	 * @return null
	 */
	protected Command getDeleteDependantCommand(Request request) {
		return null;
	}

	/**
	 * get OrphanChildren command
	 * @param request Request
	 * @return null
	 */
	protected Command getOrphanChildrenCommand(Request request) {
		return null;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.gef.editpolicies.ConstrainedLayoutEditPolicy#createAddCommand(org.eclipse.gef.EditPart, java.lang.Object)
	 */
	protected Command createAddCommand(EditPart child, Object constraint) {
		return null;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.gef.editpolicies.ConstrainedLayoutEditPolicy#createChangeConstraintCommand(org.eclipse.gef.EditPart, java.lang.Object)
	 */
	protected Command createChangeConstraintCommand(EditPart child, Object constraint) {
		SetConstraintCommand locationCommand = new SetConstraintCommand();
		locationCommand.setPart((Page) child.getModel());
		locationCommand.setLocation((Rectangle) constraint);
		return locationCommand;
	}

}