dynamictreenodebean.java

来自「OperaMasks是一种基于J2EE的Web开发技术」· Java 代码 · 共 137 行

package demo.tree;

import org.operamasks.faces.annotation.Action;
import org.operamasks.faces.annotation.Bind;
import org.operamasks.faces.annotation.ManagedBean;
import org.operamasks.faces.annotation.ManagedBeanScope;
import org.operamasks.faces.component.tree.impl.UITree;
import org.operamasks.faces.component.tree.impl.UITreeNode;
/** 
 * 
 * This managed bean is generated automatically
 */
@ManagedBean(name="DynamicTreeNodeBean", scope=ManagedBeanScope.REQUEST)
public class DynamicTreeNodeBean {
    @Bind
    private UITree tree;
    
    @Bind
    private String text;
    
    @Bind
    private String icon;
    
    @Bind
    private String checked;
    
    @Bind
    private String response;
    
    @Action
    public void tree_onselect(){
        UITreeNode node = tree.getSelectedNode();
        if(node != null){
            this.text = node.getText();
            this.icon = node.getIcon();
            setCheckState(node);
        }
        process();
    }

    @Action
    public void addNode(){
        UITreeNode node = tree.getSelectedNode();
        if(node != null){
            UITreeNode newNode = new UITreeNode();
            newNode.setText(this.text);
            newNode.setIcon(this.icon);
            newNode.setChecked(getCheckState());
            node.add(newNode);
            process();
        }
    }
    
    @Action
    public void deleteNode(){
        UITreeNode node = tree.getSelectedNode();
        if(node != null && node.getParent() instanceof UITreeNode){
            if(node != null){
                node.remove();
            }
            process();
            this.text = "";
            this.icon = "";
            this.checked = "";
        }
    }
    
    @Action
    public void modifyNode(){
        UITreeNode node = tree.getSelectedNode();
        if(node != null){
            node.setText(this.text);
            node.setIcon(this.icon);
            node.setChecked(getCheckState());
            process();
        }
    }
    
    private Boolean getCheckState(){
        if("none".equals(this.checked)){
            return null;
        }
        if("checked".equals(this.checked)){
            return true;
        }
        if("unchecked".equals(this.checked)){
            return false;
        }
        return null;
    }
    
    private void setCheckState(UITreeNode node){
        if(node.getChecked() == null){
            this.checked = "none"; 
        }else if(Boolean.TRUE.equals(node.getChecked())){
            this.checked = "checked"; 
        }else if(Boolean.FALSE.equals(node.getChecked())){
            this.checked = "unchecked"; 
        }
    }
    
    @Action
    public void tree_oncheck(){
        UITreeNode node = tree.getEventNode();
        if(node != null){
            setCheckState(node);
            process(); 
        }
    }
    
    private void process(){
        response = "";
        if(tree.getEventNode() != null){
            response += "响应事件的节点是："  + tree.getEventNode().getText();
            response += "<br/>"; 
        }
        response += "勾中的节点是：";
        for(UITreeNode node : tree.getCheckedNodes()){
            response += node.getText() + ",";
        }
        response += "<br/>";
        if(tree.getSelectedNode() != null){
            response += "选中的节点是："  + tree.getSelectedNode().getText();
        }
    }
    
    @Action
    public void collopseAll(){
        tree.collapseAll();
    }
    
    @Action
    public void expandAll(){
        tree.expandAll();
    }
}