package com.vci.client.workflow.editor.ui;

import java.awt.Dimension;
import java.awt.Toolkit;

import javax.swing.JComponent;
import javax.swing.JEditorPane;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTabbedPane;
import javax.swing.SingleSelectionModel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

import com.mxgraph.model.mxCell;
import com.mxgraph.swing.mxGraphComponent;
import com.mxgraph.view.mxGraph;
import com.vci.client.workflow.editor.BasicGraphEditor;
import com.vci.client.workflow.editor.EditorCreateXmlToJbpm;
import com.vci.client.workflow.editor.ProcessComponentFactory;
import com.vci.corba.common.VCIError;

public class FlowEditor extends JSplitPane {
	private static final long serialVersionUID = 7562492732674456910L;
	
	private mxGraph graph = null;
	private BasicGraphEditor basicGraphEditor = null;

	private JEditorPane xmlPane;
	
	public mxGraph getGraph() {
		return graph;
	}

	public FlowEditor(BasicGraphEditor basicGraphEditor) {
		this.basicGraphEditor = basicGraphEditor;
		mxGraphComponent graphComponent = basicGraphEditor.getGraphComponent();
		this.graph = graphComponent.getGraph();
		
		JTabbedPane editor = new JTabbedPane(JTabbedPane.BOTTOM);
		editor.add("Design", graphComponent);
		xmlPane = new JEditorPane();
		editor.add("Source", new JScrollPane(xmlPane));
		editor.getModel().addChangeListener(new ChangeListener() {
			public void stateChanged(ChangeEvent e) {
				SingleSelectionModel source = (SingleSelectionModel)e.getSource();
				int selectedIndex = source.getSelectedIndex();
				freshGraphEditor(selectedIndex);
			}
		});
		this.setOrientation(JSplitPane.VERTICAL_SPLIT);
		this.setTopComponent(editor);

		mxCell cell = (mxCell)getGraph().getModel().getRoot();
		this.setBottomComponent((JComponent)cell.getValue());

		Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
		this.setDividerLocation(screenSize.height - 280);
		this.setDividerSize(7);
		this.setOneTouchExpandable(true);
	}

	private void freshGraphEditor(int selectedIndex) {
		if(selectedIndex == 1){//1是source属性页的index
			EditorCreateXmlToJbpm getXml= new  EditorCreateXmlToJbpm(basicGraphEditor);
			xmlPane.setText(getXml.getsXml());
			xmlPane.setCaretPosition(0);
		}
	}

	public void updatePanel(Object cell) throws VCIError {
		Object value = ((mxCell)cell).getValue();
		if(value instanceof JComponent) {
			this.setBottomComponent((JComponent)value);
		} else if(value instanceof String) {
			JComponent component = ProcessComponentFactory.getComponent(graph, ((mxCell)cell));
			((mxCell)cell).setValue(component);
			this.setBottomComponent(component);
		}
		int location = this.getDividerLocation();
		this.setDividerLocation(location);
	}
	
	public String getXml(){
		return xmlPane.getText();
	}

}