TreeView监听

• 给jms节点添加值监听

  jms.addEventHandler(TreeItem.<String>valueChangedEvent(), new EventHandler<TreeItem.TreeModificationEvent<String>>() {  
      @Override  
      public void handle(TreeItem.TreeModificationEvent<String> event) {  
          System.out.println("event.getNewValue() = " + event.getNewValue());  
          System.out.println("event.getTreeItem().getValue() = " + event.getTreeItem().getValue());  
      }  
  });  
  

• 给根节点添加value监听

  china.addEventHandler(TreeItem.<String>valueChangedEvent(), new EventHandler<TreeItem.TreeModificationEvent<String>>() {  
      @Override  
      public void handle(TreeItem.TreeModificationEvent<String> event) {  
          System.out.println("event.getNewValue() = " + event.getNewValue());  
          System.out.println("event.getTreeItem().getValue() = " + event.getTreeItem().getValue());  
      }  
  });  
  

• 给根节点添加graphic监听

  china.addEventHandler(TreeItem.graphicChangedEvent(), new EventHandler<TreeItem.TreeModificationEvent<String>>() {  
      @Override  
      public void handle(TreeItem.TreeModificationEvent<String> event) {  
          System.out.println("event.getNewValue() = " + event.getNewValue());  
          System.out.println("event.getTreeItem().getValue() = " + event.getTreeItem().getValue());  
      }  
  }); 
  

• 给根节点添加收起监听

  china.addEventHandler(TreeItem.branchCollapsedEvent(), new EventHandler<TreeItem.TreeModificationEvent<String>>() {  
      @Override  
      public void handle(TreeItem.TreeModificationEvent<String> event) {  
          System.out.println("收起");  
      }  
  });  
  

• 给根节点添加展开监听

  china.addEventHandler(TreeItem.branchExpandedEvent(), new EventHandler<TreeItem.TreeModificationEvent<String>>() {  
      @Override  
      public void handle(TreeItem.TreeModificationEvent<String> event) {  
          System.out.println("展开");  
      }  
  }); 
  

• 给根节点添加子节点修改监听

  china.addEventHandler(TreeItem.childrenModificationEvent(), new EventHandler<TreeItem.TreeModificationEvent<String>>() {  
      @Override  
      public void handle(TreeItem.TreeModificationEvent<String> event) {  
          event.getAddedChildren().forEach(System.out::println);  
          event.getRemovedChildren().forEach(System.out::println);  
      }  
  }); 
  

• 给根节点添加监听

  china.addEventHandler(TreeItem.treeNotificationEvent(), new EventHandler<TreeItem.TreeModificationEvent<String>>() {  
      @Override  
      public void handle(TreeItem.TreeModificationEvent<String> event) {  
          System.out.println("event.wasPermutated() = " + event.wasPermutated());  
      }  
  });