tomahawk拡張タグ　tree2

JSF

を試してみよう編。
まずfaces-config.xml内のバッキングビーン設定を忘れないこと！
タグ内 ：
showNav="false"でナビアイコンなしに。
binding="#{treeBacker.tree}"＋入力フォーム設置でファイル直接指定。
showRootNode="false"で最上位フォルダ非表示(？)。

>>JSP部分ソース(tree.jsp)
<%@ page contentType="text/html; charset=Shift_JIS"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://myfaces.apache.org/tomahawk" prefix="t"%>

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=Shift_JIS" />
<title></title>
</head>
<body>
<f:view><h:form>
<t:tree2 id="clientTree" value="#{treeBacker.treeData}" var="node"
			varNodeToggler="t">
<f:facet name="section">
	<h:panelGroup>
		<f:facet name="expand">
			<t:graphicImage value="images/yellow-folder-open.png" rendered="#{t.nodeExpanded}" border="0" /> 
		</f:facet>
		<f:facet name="collapse">
			<t:graphicImage value="images/yellow-folder-closed.png" rendered="#{!t.nodeExpanded}" border="0" />						 
		</f:facet>
		<h:outputText value="#{node.description}" styleClass="nodeFolder" />
	</h:panelGroup>
</f:facet>
<f:facet name="person">
	<h:panelGroup>
		<f:facet name="expand">
			<t:graphicImage value="images/yellow-folder-open.png" rendered="#{t.nodeExpanded}" border="0" />							
		</f:facet>
		<f:facet name="collapse">
			<t:graphicImage value="images/yellow-folder-closed.png" rendered="#{!t.nodeExpanded}" border="0" />							
		</f:facet>
		<h:outputText value="#{node.description}" styleClass="nodeFolder" />
		<h:outputText value=" (#{node.childCount})" styleClass="childCount" />
	</h:panelGroup>
</f:facet>
</t:tree2>
</h:form></f:view>
</body>
</html>
>>バッキングビーン(TreeBacker.java)ほぼサンプルコピペ。
import org.apache.myfaces.custom.tree2.HtmlTree;
import org.apache.myfaces.custom.tree2.TreeNode;
import org.apache.myfaces.custom.tree2.TreeNodeBase;
import org.apache.myfaces.custom.tree2.TreeModel;
import org.apache.myfaces.custom.tree2.TreeModelBase;

import javax.faces.context.FacesContext;
import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.validator.ValidatorException;
import javax.faces.event.ActionEvent;
import java.io.Serializable;

public class TreeBacker implements Serializable
{
	private static final long serialVersionUID = 1L;
    private TreeModelBase     _treeModel;
    private HtmlTree          _tree;

    public TreeNode getTreeData()
    {
    	TreeNode treeData = new TreeNodeBase("section", "会社", false);
    	
    	TreeNodeBase personNode = new TreeNodeBase("section", "部", false);
        
        TreeNodeBase folderNode = new TreeNodeBase("section", "メンバー", false);
        folderNode.getChildren().add(new TreeNodeBase("person", "ひとりめ", true));
        folderNode.getChildren().add(new TreeNodeBase("person", "ふたりめ", true));
        folderNode.getChildren().add(new TreeNodeBase("person", "さんにんめ", true));
        personNode.getChildren().add(folderNode);
        treeData.getChildren().add(personNode);
        
    	return treeData;
    	
    }
	
    public TreeModel getExpandedTreeData()
    {
        return new TreeModelBase(getTreeData());
    }

    public void setTree(HtmlTree tree)
    {
        _tree = tree;
    }

    public HtmlTree getTree()
    {
        return _tree;
    }

    public String expandAll()
    {
        _tree.expandAll();
        return null;
    }

    private String _nodePath;

    public void setNodePath(String nodePath)
    {
        _nodePath = nodePath;
    }

    public String getNodePath()
    {
        return _nodePath;
    }

    public void checkPath(FacesContext context, UIComponent component, java.lang.Object value)
    {
        // make sure path is valid (leaves cannot be expanded or renderer will complain)
        FacesMessage message = null;

        String[] path = _tree.getPathInformation(value.toString());

        for (int i = 0; i < path.length; i++)
        {
            String nodeId = path[i];
            try
            {
                _tree.setNodeId(nodeId);
            }
            catch (Exception e)
            {
                throw new ValidatorException(message, e);
            }

            if (_tree.getNode().isLeaf())
            {
                message = new FacesMessage(FacesMessage.SEVERITY_ERROR, "Invalid node path (cannot expand a leaf): "
                        + nodeId, "Invalid node path (cannot expand a leaf): " + nodeId);
                throw new ValidatorException(message);
            }
        }
    }

    public void expandPath(ActionEvent event)
    {
        _tree.expandPath(_tree.getPathInformation(_nodePath));
    }
	
}

こんな感じになった。
tree.jsp内の"#{node.description}"あたりがエラー判定になっているが、
実際にはブラウザ上でちゃんと表示されていてなぞぃ。
なぜか#{node.childCount}はエラーと言われてないあたりも不思議。