layoutbuilder.java

定要上载质量高而定要上载质量高而定要上载质量高而定要上载质量高而定要上载质量高而

/*
 * Created on May 28, 2005
 */
package org.flexdock.perspective;

import java.awt.Component;

import javax.swing.JSplitPane;
import javax.swing.JTabbedPane;

import org.flexdock.docking.Dockable;
import org.flexdock.docking.DockingConstants;
import org.flexdock.docking.DockingManager;
import org.flexdock.docking.DockingPort;
import org.flexdock.docking.state.LayoutNode;
import org.flexdock.docking.state.tree.DockableNode;
import org.flexdock.docking.state.tree.DockingPortNode;
import org.flexdock.docking.state.tree.SplitNode;
import org.flexdock.util.SwingUtility;

/**
 * @author Christopher Butler
 */
public class LayoutBuilder {
	private static final LayoutBuilder SINGLETON = new LayoutBuilder();
	
	public static LayoutBuilder getInstance() {
		return SINGLETON;
	}
	
	private LayoutBuilder() {
		
	}
	
	public LayoutNode createLayout(DockingPort port) {
		if(port==null)
			return null;
		return createLayoutImpl(port);
	}
	
	private LayoutNode createLayoutImpl(DockingPort port) {
		DockingPortNode node = new DockingPortNode();
		node.setUserObject(port);
		Component docked = port.getDockedComponent();
		link(node, docked);
		return node;		
	}
	
	private LayoutNode createLayout(JSplitPane split) {
		String region = (String)SwingUtility.getClientProperty(split, DockingConstants.REGION);
		Component left = split.getLeftComponent();
		Component right = split.getRightComponent();
		float percent = SwingUtility.getDividerProportion(split);
		
		SplitNode node = new SplitNode(split.getOrientation(), 0, percent, null);
		node.setDockingRegion(region);
		
		link(node, left);
		link(node, right);
		
		return node;
	}
	
	private LayoutNode createLayout(Dockable dockable) {
		if(dockable==null)
			return null;
		
		DockableNode node = new DockableNode();
		node.setDockableId(dockable.getPersistentId());
		return node;
	}
	
	private LayoutNode[] createLayout(JTabbedPane tabs) {
		int len = tabs.getComponentCount();
		LayoutNode[] nodes = new LayoutNode[len];
		for(int i=0; i<len; i++) {
			Component comp = tabs.getComponent(i);
			Dockable dockable = DockingManager.getDockable(comp);
			nodes[i] = createLayout(dockable);
		}
		return nodes;
	}
	
	private void link(LayoutNode node, Component child) {
		if(child instanceof DockingPort) {
			LayoutNode childNode = createLayoutImpl((DockingPort)child);
			link(node, childNode);
		}
		else if(child instanceof JSplitPane) {
			LayoutNode childNode = createLayout((JSplitPane)child);
			link(node, childNode);
		}
		else if (child instanceof JTabbedPane) {
			LayoutNode[] children = createLayout((JTabbedPane)child); 
			for(int i=0; i<children.length; i++)
				link(node, children[i]);
		}
		else {
			Dockable dockable = DockingManager.getDockable(child);
			LayoutNode childNode = createLayout(dockable);
			link(node, childNode);
		}		
	}
	
	private void link(LayoutNode parent, LayoutNode child) {
		if(child!=null)
			parent.add(child);
	}
}