abstractmanagerlist.java

JGraph扩展应用。自定义Renderer,自定义视图View实现自定义工作流控件

/*
Copyright 2005 Matthew J. Battey

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

	Unless required by applicable law or agreed to in writing, software distributed
	under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
	CONDITIONS OF ANY KIND, either express or implied. See the License for the
	specific language governing permissions and limitations under the License.

This software implements a Java application to manage a SAFMQ server.
		
Created on May 25, 2005
*/
package flow.graph.gui.tree;

import java.util.Vector;

import javax.swing.AbstractListModel;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.DefaultTreeSelectionModel;
import javax.swing.tree.TreePath;

import flow.graph.app.FlowManager;


/**
* @author matt
*/
public abstract class AbstractManagerList 
		extends AbstractListModel 
		implements ServerTreeViewExpansionListener, ServerTreeViewSelectionListener, IconListView.Activateable, TreePathable
{
	Vector	list = new Vector();
	
	/**
	 * Method for reloading the list
	 * 
	 * @return The success or failure of reloading
	 */
	public abstract boolean reload();
	
	/**
	 * Called when a node is first added to the list.
	 * 
	 * @param n The node which was just added.
	 */
	public void onAddNode(DefaultMutableTreeNode n) {
	}
	
	public Vector getList() {
		return list;
	}
	
	/**
	 * @see com.safmq.manager.ServerTreeViewExpansionListener#willExpand(javax.swing.JTree, javax.swing.tree.DefaultMutableTreeNode)
	 */
	public boolean willExpand(JTree tree, DefaultMutableTreeNode container) {
		if (reload()) {
			setNodeChildren(tree, container);
			TreePath tp = ((DefaultTreeSelectionModel)tree.getSelectionModel()).getSelectionPath();
			if (tp != null) {
				Object objPath[] = tp.getPath();
				if (((DefaultMutableTreeNode)objPath[objPath.length-1]).getUserObject() == this) {
					FlowManager.getInstance().setControlView(new IconListView(this));
				}
			}
			return true;
		}
		return false;
	}

	protected boolean setNodeChildren(JTree tree, DefaultMutableTreeNode container) {
		DefaultMutableTreeNode	n;
		DefaultMutableTreeNode	child;
		DefaultTreeModel		treeModel = (DefaultTreeModel)tree.getModel();
		int						x;
		Vector					tmp = (Vector)getList().clone();
		
		//System.out.println(this.getClass().getName()+".setNodeChildren()===================================");
		if (tmp.size() > 0) {
			boolean removed = false;
			for(x = 0; x < container.getChildCount(); ) {
				child = (DefaultMutableTreeNode)container.getChildAt(x);
				if (!tmp.removeElement(child.getUserObject()) || (child.getUserObject() instanceof String)) {
					int		idx[] = {x};
					Object	nodes[] = {child};
					
					container.remove(x);
					treeModel.nodesWereRemoved(container,idx,nodes);
					removed = true;
				} else {
					x++;
				}
			}
			
			for(x = 0; x < tmp.size(); x++) {
				int idx[] = new int[1]; 
				container.add(n = new DefaultMutableTreeNode(tmp.get(x)));
				
				idx[0] = container.getChildCount()-1;
				treeModel.nodesWereInserted(container,idx);
				onAddNode(n);
				//System.out.println("set Child Node...1");
				if (tmp.get(x) instanceof TreePathable){
					//System.out.println("set Child Node...2");
					((TreePathable)tmp.get(x)).setPath(new TreePath(n.getPath()));
				}
			}
			return removed || x > 0;
		}
		return false;
	}
	
	/**
	 * @see com.safmq.manager.ServerTreeViewSelectionListener#doSelection(JTree,DefaultMutableTreeNode)
	 */
	public void doSelection(JTree tree, DefaultMutableTreeNode container) {
		if (reload()) {
			setNodeChildren(tree, container);
			FlowManager.getInstance().setControlView(new IconListView(this));	
		}		
	}


	/**
	 * @see javax.swing.ListModel#getElementAt(int)
	 */
	public Object getElementAt(int index) {
		return getList().get(index);
	}

	/**
	 * @see javax.swing.ListModel#getSize()
	 */
	public int getSize() {
		return getList().size();
	}


	/**
	 * @see com.safmq.manager.IconListView.Activateable#activate()
	 */
	public void activate() {
		if (getPath() != null) {
			FlowManager.getInstance().getTreeView().activatePath(getPath());
		}		
	}


	TreePath treePath = null;
	/**
	 * @see com.safmq.manager.TreePathable#getPath()
	 */
	public TreePath getPath() {
		return treePath;
	}

	/**
	 * @see com.safmq.manager.TreePathable#setPath(javax.swing.tree.TreePath)
	 */
	public void setPath(TreePath path) {
		treePath = path;
	}
}