htmltree.java

一个使用struts+hibernate+spring开发的完的网站源代码。

/*
 * Copyright 2004 The Apache Software Foundation.
 * 
 * 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.
 */
package org.apache.myfaces.custom.tree;

import java.io.IOException;
import java.util.*;

import javax.faces.component.UIViewRoot;
import javax.faces.component.html.HtmlPanelGroup;
import javax.faces.context.FacesContext;
import javax.faces.el.ValueBinding;

import org.apache.myfaces.component.html.util.AddResource;
import org.apache.myfaces.custom.tree.event.TreeSelectionEvent;
import org.apache.myfaces.custom.tree.event.TreeSelectionListener;
import org.apache.myfaces.custom.tree.model.TreeModel;
import org.apache.myfaces.custom.tree.model.TreeModelEvent;
import org.apache.myfaces.custom.tree.model.TreeModelListener;
import org.apache.myfaces.custom.tree.model.TreePath;


/**
 * <p/>
 * Tree implementation based on javax.swing.JTree.
 * </p>
 * <p/>
 * The tree model is assigned by using a value binding named <code>model</code>
 * and is not stored in view state.
 * </p>
 * <p/>
 * A hierarchy of {@link HtmlTreeNode}objects is used to represent the current
 * expanded state of the tree. The root node is held as a faces named
 * <code>rootNode</code>.
 * </p>
 *
 * @author <a href="mailto:[e-mail]">Oliver Rossmueller </a>
 * @version $Revision: 1.31 $ $Date: 2005/03/30 07:41:58 $
 *          <p/>
 *          $Log: HtmlTree.java,v $
 *          Revision 1.31  2005/03/30 07:41:58  matzew
 *          closed MYFACES-139. Thanks to Mathias Broekelmann
 *
 *          Revision 1.30  2005/02/11 00:54:02  svieujot
 *          Revert changes commited to the wrong branch.
 *
 *          Revision 1.28  2004/12/24 14:13:16  svieujot
 *          Upgrade the tree component to use the Extensions filter.
 *
 *          Revision 1.27  2004/11/26 12:46:38  oros
 *          cleanup: removed unused iconChild attribute
 *
 *          Revision 1.26  2004/11/26 12:33:54  oros
 *          MYFACES-9: store iconChildMiddle in component state
 *
 *          Revision 1.25  2004/11/26 12:14:10  oros
 *          MYFACES-8: applied tree table patch by David Le Strat
 *
 */
public class HtmlTree extends HtmlPanelGroup implements TreeModelListener
{

    public static final int DEFAULT_EXPIRE_LISTENERS = 8 * 60 * 60 * 1000; // 8 hours
    private static final String FACET_ROOTNODE = "rootNode";
    private static final String PREVIOUS_VIEW_ROOT = HtmlTree.class.getName() + ".PREVIOUS_VIEW_ROOT";
    private static final int EVENT_CHANGED = 0;
    private static final int EVENT_INSERTED = 1;
    private static final int EVENT_REMOVED = 2;
    private static final int EVENT_STRUCTURE_CHANGED = 3;
    private static int counter = 0;
    
    // Defaut images
    private static final String DEFAULT_IMAGE_ICON_LINE = "images/line.gif";
    private static final String DEFAULT_IMAGE_ICON_NOLINE = "images/noline.gif";
    private static final String DEFAULT_IMAGE_ICON_CHILD_FIRST = "images/line_first.gif";
    private static final String DEFAULT_IMAGE_ICON_CHILD_MIDDLE = "images/line_middle.gif";
    private static final String DEFAULT_IMAGE_ICON_CHILD_LAST = "images/line_last.gif";
    private static final String DEFAULT_IMAGE_ICON_NODE_OPEN = "images/node_open.gif";
    private static final String DEFAULT_IMAGE_ICON_NODE_OPEN_FIRST = "images/node_open_first.gif";
    private static final String DEFAULT_IMAGE_ICON_NODE_OPEN_MIDDLE = "images/node_open_middle.gif";
    private static final String DEFAULT_IMAGE_ICON_NODE_OPEN_LAST = "images/node_open_last.gif";
    private static final String DEFAULT_IMAGE_ICON_NODE_CLOSE = "images/node_close.gif";
    private static final String DEFAULT_IMAGE_ICON_NODE_CLOSE_FIRST = "images/node_close_first.gif";
    private static final String DEFAULT_IMAGE_ICON_NODE_CLOSE_MIDDLE = "images/node_close_middle.gif";
    private static final String DEFAULT_IMAGE_ICON_NODE_CLOSE_LAST = "images/node_close_last.gif";
    
    private IconProvider iconProvider;
    private boolean itemStatesRestored = false;
    private String var;
    private String styleClass;
    private String nodeClass;
    private String rowClasses;
    private String columnClasses;
    private String selectedNodeClass;
    private String iconClass;
    private String iconLine;
    private String iconNoline;
    private String iconChildFirst;
    private String iconChildMiddle;
    private String iconChildLast;
    private String iconNodeOpen;
    private String iconNodeOpenFirst;
    private String iconNodeOpenMiddle;
    private String iconNodeOpenLast;
    private String iconNodeClose;
    private String iconNodeCloseFirst;
    private String iconNodeCloseMiddle;
    private String iconNodeCloseLast;
    private int uniqueIdCounter = 0;
    private int[] selectedPath;
    private int internalId;
    private long expireListeners = DEFAULT_EXPIRE_LISTENERS;


    /**
     * <p/>
     * Default constructor.
     * </p>
     */
    public HtmlTree()
    {
        internalId = counter++;
    }


    public TreeModel getModel(FacesContext context)
    {
        ValueBinding binding = getValueBinding("model");

        if (binding != null)
        {
            TreeModel model = (TreeModel) binding.getValue(context);
            if (model != null)
            {
                return model;
            }
        }
        return null;
    }


    public String createUniqueId(FacesContext context)
    {
        return getClientId(context).replaceAll(":", "_") + "_node_" + uniqueIdCounter++;
    }


    public void addTreeSelectionListener(TreeSelectionListener listener)
    {
        addFacesListener(listener);
    }


    public IconProvider getIconProvider()
    {
        return iconProvider;
    }


    public void setIconProvider(IconProvider iconProvider)
    {
        this.iconProvider = iconProvider;
    }


    /**
     * @return Returns the var.
     */
    public String getVar()
    {
        return var;
    }


    /**
     * @param var The var to set.
     */
    public void setVar(String var)
    {
        this.var = var;
    }


    public String getIconLine()
    {
        if( iconLine != null )
            return iconLine;
        
        return getDefaultImagePath( DEFAULT_IMAGE_ICON_LINE );
    }


    public void setIconLine(String iconLine)
    {
        this.iconLine = iconLine;
    }


    public String getIconNoline()
    {
        if( iconNoline != null )
            return iconNoline;
        
        return getDefaultImagePath( DEFAULT_IMAGE_ICON_NOLINE );
    }


    public void setIconNoline(String iconNoline)
    {
        this.iconNoline = iconNoline;
    }


    public String getIconChildFirst()
    {
        if( iconChildFirst != null )
            return iconChildFirst;
        
        return getDefaultImagePath( DEFAULT_IMAGE_ICON_CHILD_FIRST );
    }


    public void setIconChildFirst(String iconChildFirst)
    {
        this.iconChildFirst = iconChildFirst;
    }


    public String getIconChildMiddle()
    {
        if( iconChildMiddle != null )
            return iconChildMiddle;
        
        return getDefaultImagePath( DEFAULT_IMAGE_ICON_CHILD_MIDDLE );
    }


    public void setIconChildMiddle(String iconChildMiddle)
    {
        this.iconChildMiddle = iconChildMiddle;
    }


    public String getIconChildLast()
    {
        if( iconChildLast != null )
            return iconChildLast;
        
        return getDefaultImagePath( DEFAULT_IMAGE_ICON_CHILD_LAST );
    }


    public void setIconChildLast(String iconChildLast)
    {
        this.iconChildLast = iconChildLast;
    }


    public String getIconNodeOpen()
    {
        if( iconNodeOpen != null )
            return iconNodeOpen;
        
        return getDefaultImagePath( DEFAULT_IMAGE_ICON_NODE_OPEN );
    }


    public void setIconNodeOpen(String iconNodeOpen)
    {
        this.iconNodeOpen = iconNodeOpen;
    }


    public String getIconNodeOpenFirst()
    {
        if( iconNodeOpenFirst != null )
        return iconNodeOpenFirst;
        
        return getDefaultImagePath( DEFAULT_IMAGE_ICON_NODE_OPEN_FIRST );
    }


    public void setIconNodeOpenFirst(String iconNodeOpenFirst)
    {
        this.iconNodeOpenFirst = iconNodeOpenFirst;
    }


    public String getIconNodeOpenMiddle()
    {
        if( iconNodeOpenMiddle != null )
            return iconNodeOpenMiddle;
        
        return getDefaultImagePath( DEFAULT_IMAGE_ICON_NODE_OPEN_MIDDLE );
    }


    public void setIconNodeOpenMiddle(String iconNodeOpenMiddle)
    {
        this.iconNodeOpenMiddle = iconNodeOpenMiddle;
    }


    public String getIconNodeOpenLast()
    {
        if( iconNodeOpenLast != null )
            return iconNodeOpenLast;
        
        return getDefaultImagePath( DEFAULT_IMAGE_ICON_NODE_OPEN_LAST );
    }


    public void setIconNodeOpenLast(String iconNodeOpenLast)
    {
        this.iconNodeOpenLast = iconNodeOpenLast;
    }


    public String getIconNodeClose()
    {
        if( iconNodeClose != null )
            return iconNodeClose;
        
        return getDefaultImagePath( DEFAULT_IMAGE_ICON_NODE_CLOSE );
    }


    public void setIconNodeClose(String iconNodeClose)
    {
        this.iconNodeClose = iconNodeClose;
    }


    public String getIconNodeCloseFirst()
    {
        if( iconNodeCloseFirst != null )
            return iconNodeCloseFirst;
        
        return getDefaultImagePath( DEFAULT_IMAGE_ICON_NODE_CLOSE_FIRST );
    }


    public void setIconNodeCloseFirst(String iconNodeCloseFirst)
    {
        this.iconNodeCloseFirst = iconNodeCloseFirst;
    }


    public String getIconNodeCloseMiddle()
    {
        if( iconNodeCloseMiddle != null )
            return iconNodeCloseMiddle;
        
        return getDefaultImagePath( DEFAULT_IMAGE_ICON_NODE_CLOSE_MIDDLE );
    }


    public void setIconNodeCloseMiddle(String iconNodeCloseMiddle)
    {
        this.iconNodeCloseMiddle = iconNodeCloseMiddle;
    }


    public String getIconNodeCloseLast()
    {
        if( iconNodeCloseLast != null )
            return iconNodeCloseLast;
        
        return getDefaultImagePath( DEFAULT_IMAGE_ICON_NODE_CLOSE_LAST );
    }


    public void setIconNodeCloseLast(String iconNodeCloseLast)
    {
        this.iconNodeCloseLast = iconNodeCloseLast;
    }


    public String getStyleClass()
    {
        return styleClass;
    }


    public void setStyleClass(String styleClass)
    {
        this.styleClass = styleClass;
    }


    public String getNodeClass()
    {
        return nodeClass;
    }


    public void setNodeClass(String nodeClass)
    {
        this.nodeClass = nodeClass;
    }


    /**
     * @return Returns the rowClasses.
     */
    public String getRowClasses()
    {
        return rowClasses;
    }


    /**
     * @param rowClasses The rowClasses to set.
     */
    public void setRowClasses(String rowClasses)
    {
        this.rowClasses = rowClasses;
    }


    /**
     * @return Returns the columnClasses.
     */
    public String getColumnClasses()
    {
        return columnClasses;
    }


    /**
     * @param columnClasses The columnClasses to set.
     */
    public void setColumnClasses(String columnClasses)
    {
        this.columnClasses = columnClasses;
    }


    /**
     * @return Returns the selectedNodeClass.
     */
    public String getSelectedNodeClass()
    {
        return selectedNodeClass;
    }


    /**
     * @param selectedNodeClass The selectedNodeClass to set.
     */
    public void setSelectedNodeClass(String selectedNodeClass)
    {
        this.selectedNodeClass = selectedNodeClass;
    }


    public String getIconClass()
    {
        return iconClass;
    }


    public void setIconClass(String iconClass)
    {
        this.iconClass = iconClass;
    }


    public long getExpireListeners()
    {
        return expireListeners;
    }


    public void setExpireListeners(long expireListeners)
    {
        this.expireListeners = expireListeners;
    }


    public String getFamily()
    {
        return "org.apache.myfaces.HtmlTree";
    }


    /**
     * Ensures that the node identified by the specified path is expanded and
     * viewable. If the last item in the path is a leaf, this will have no
     * effect.
     *
     * @param path the <code>TreePath</code> identifying a node
     */
    public void expandPath(TreePath path, FacesContext context)
    {
        // Only expand if not leaf!
        TreeModel model = getModel(context);

        if (path != null && model != null && !model.isLeaf(path.getLastPathComponent()))
        {
            int[] translatedPath = HtmlTreeNode.translatePath(path, getModel(context));
            HtmlTreeNode rootNode = getRootNode();
            if (rootNode == null)
            {
                createRootNode(context);
                rootNode = getRootNode();
            }
            if (!rootNode.isExpanded())
            {
                rootNode.setExpanded(true);
            }
            rootNode.expandPath(translatedPath, 0);

        }
    }