Java 当焦点丢失或在JTree位置之外单击鼠标左键时，如何使JTree停止单元格编辑？

我希望在编辑JTree时，如果在编辑框外单击，我希望提交编辑。

tree.setInvokeStopCellEditing（true）帮助，如果我单击JTree中的某个地方，编辑就会提交。但是，如果我在JTree之外单击，比如说JTextPane，编辑将不会提交。因此，问题：问题：当焦点丢失时，如何使JTree停止单元格编辑？或者在JTree位置之外单击鼠标左键？还有更喜欢的方法吗？

注意：在下面的代码中，我尝试使用一个焦点侦听器内部类来解决这个问题，并尝试了伪代码
WhenTreeLosesFocus（）{if（tree.isEditing（））tree.stopEditing（）；}

这不起作用，因为在编辑时，焦点会更改为树中的CellEditor组件，我看到编辑框会快速打开然后关闭

解决方案不必基于焦点，可以在JTree区域外单击鼠标左键

SSCE如下（顺便说一句，如果为了方便而运行代码，空格键和F2都将重命名节点。）

欢迎对一种方式是否优于另一种方式进行说明。以及如何检测鼠标是否在JTree外单击的提示/提示方向正确
 我添加了
System.out.println（e.get反对派组件（）.getClass（）.getName（））
到focusLost（FocusEvent e）它给了我一些可以与if语句相比较的东西，但是我开始认为最好在“javax.swing.tree.DefaultTreeCeleditor$DefaultTextField”中添加一个焦点侦听器来处理这个问题。我希望我可以做
tree.getCellEditor（）.addFocusListener（）
，但是.addFocusListener（）TreeCellEditor不存在，.getCellEditor（）有一个.addCellEditorListener，但它的方法似乎没有帮助。一个可能但难看的解决方案是在其他可点击组件中添加一个焦点侦听器。（这在JSplitPane的情况下不起作用）我正在研究这个想法，添加一个玻璃窗格，将其设置为可见，添加一个鼠标侦听器，唯一的问题是玻璃窗格会消耗鼠标图标。基于这一点，我似乎可以防止鼠标点击被消费，唯一的问题是我不知道如何（研究atm），如果我能弄清楚如何，就很容易检查鼠标点击是否超出了JTree的帮助范围？现在阅读它，之前我正在研究，我在我的SSCE中尝试了该代码，但无法使其工作（出于好奇，这可能会成为一个单独的问题）。现在，我将尝试使用您的链接从不同的角度来解决这个问题。我不记得从哪里读到的玻璃窗解决方案可能不适用于小程序/所有情况，因此我想说，这可能会使基于聚焦侦听器的解决方案更好。（但我也听说不同的操作系统对focus的处理方式不同，所以我想还是有利弊的，可以随意添加一个基于玻璃面板的soln，我很满意这个）
    import java.awt.Component;
    import java.awt.event.FocusEvent;
    import java.awt.event.FocusListener;
    import javax.swing.JFrame;
    import javax.swing.JScrollPane;
    import javax.swing.JSplitPane;
    import javax.swing.JTextPane;
    import javax.swing.JTree;
    import javax.swing.KeyStroke;
    import javax.swing.tree.DefaultTreeCellEditor;
    import javax.swing.tree.DefaultTreeCellRenderer;
    import javax.swing.tree.TreeCellRenderer;


    public class StackExchangeQuestion3AnsA {

         public static void main(String[] args){  
         new StackExchangeQuestion3AnsA();           
         }        


   StackExchangeQuestion3AnsA(){
         JFrame window;    
         window = new JFrame();
         window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         window.setTitle("Stack Exchange Answer");
         window.setSize(400,500);//variable parameters would be best
         window.setVisible(true);           


         JSplitPane split = new JSplitPane();
       window.setContentPane(split);
         JScrollPane left = new JScrollPane();
         JScrollPane right = new JScrollPane();
         JTree tree;
         tree = new JTree();//loads sample tree data
         tree.setEditable(true);//select a node then press F2 to edit (built in keybinding)
         tree.getInputMap().put(KeyStroke.getKeyStroke("SPACE"), "startEditing");//can edit with space now
         tree.setInvokesStopCellEditing(true);//this helps stop editing within focus of tree
         //even with my fix the above line is still needed

         JTextPane text = new JTextPane();
         split.setLeftComponent(left);
         split.setRightComponent(right);
         left.setViewportView(tree);
         right.setViewportView(text);
         split.setDividerLocation(200);   

         tree.setCellEditor( new MyTreeCellEditor(tree, tree.getCellRenderer()) );

   }//end constructor


private class MyTreeCellEditor extends DefaultTreeCellEditor {
     public MyTreeCellEditor(JTree tree, TreeCellRenderer renderer) {
                    super(tree, (DefaultTreeCellRenderer)renderer);
//Note: http://stackoverflow.com/questions/5031101/why-i-lose-the-focus-for-a-short-time-from-jtree-after-editing-a-node?rq=1 
//André mentions "The tree adds a DefaultCellEditor to the JTree hierarchy when editing starts. This textfield gains the focus."                    
//it's not as simple as just this.addFocusListener()

//2 variables: editingComponent and editingContainer, are inherited from DefaultTreeCellEditor
//the constructor doesn't initialize the editingComponent
//it's null atm, so we can't add focusListener to it, (yet at a later time it will gain focus)    
//FocusOwner (on edit): javax.swing.tree.DefaultTreeCellEditor$DefaultTextField
//editingComponent is by default a DefaultTextField                    
        }        

    @Override
    public Component getTreeCellEditorComponent(final JTree tree, Object value, boolean isSelected, boolean expanded, boolean leaf, int row) {
       Component container = super.getTreeCellEditorComponent(tree, value, isSelected, expanded, leaf, row);
//Note: System.out.println("Components Type: "+containeractually.getClass().getName());
//was used to show it was container, javax.swing.tree.DefaultTreeCellEditor$EditorContainer

//getTreeCellEditorComponent(parameters) is called as soon as editing begins
//also at this time editingComponent != null (aka initialized)
//so it's a good place to add in a Focus Listener

editingComponent.addFocusListener( new FocusListener(){
                @Override  public void focusGained(FocusEvent e) { }
                @Override  public void focusLost(FocusEvent e) {
                tree.stopEditing();}                  } );

//EditorContainer is responsible for displaying the editingComponent
//so we added focusListener, after editingComponent initialized, and before it's used
//(I think the return statement means it's about to be used)
        return container;
        }
}//end MyTreeCellEditor

}//end class         

    import java.awt.Component;
    import java.awt.event.FocusEvent;
    import java.awt.event.FocusListener;
    import javax.swing.JFrame;
    import javax.swing.JScrollPane;
    import javax.swing.JSplitPane;
    import javax.swing.JTextPane;
    import javax.swing.JTree;
    import javax.swing.KeyStroke;
    import javax.swing.tree.DefaultTreeCellEditor;
    import javax.swing.tree.DefaultTreeCellRenderer;
    import javax.swing.tree.TreeCellRenderer;


    public class StackExchangeQuestion3AnsA {

         public static void main(String[] args){  
         new StackExchangeQuestion3AnsA();           
         }        


   StackExchangeQuestion3AnsA(){
         JFrame window;    
         window = new JFrame();
         window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         window.setTitle("Stack Exchange Answer");
         window.setSize(400,500);//variable parameters would be best
         window.setVisible(true);           


         JSplitPane split = new JSplitPane();
       window.setContentPane(split);
         JScrollPane left = new JScrollPane();
         JScrollPane right = new JScrollPane();
         JTree tree;
         tree = new JTree();//loads sample tree data
         tree.setEditable(true);//select a node then press F2 to edit (built in keybinding)
         tree.getInputMap().put(KeyStroke.getKeyStroke("SPACE"), "startEditing");//can edit with space now
         tree.setInvokesStopCellEditing(true);//this helps stop editing within focus of tree
         //even with my fix the above line is still needed

         JTextPane text = new JTextPane();
         split.setLeftComponent(left);
         split.setRightComponent(right);
         left.setViewportView(tree);
         right.setViewportView(text);
         split.setDividerLocation(200);   

         tree.setCellEditor( new MyTreeCellEditor(tree, tree.getCellRenderer()) );

   }//end constructor


private class MyTreeCellEditor extends DefaultTreeCellEditor {
     public MyTreeCellEditor(JTree tree, TreeCellRenderer renderer) {
                    super(tree, (DefaultTreeCellRenderer)renderer);
//Note: http://stackoverflow.com/questions/5031101/why-i-lose-the-focus-for-a-short-time-from-jtree-after-editing-a-node?rq=1 
//André mentions "The tree adds a DefaultCellEditor to the JTree hierarchy when editing starts. This textfield gains the focus."                    
//it's not as simple as just this.addFocusListener()

//2 variables: editingComponent and editingContainer, are inherited from DefaultTreeCellEditor
//the constructor doesn't initialize the editingComponent
//it's null atm, so we can't add focusListener to it, (yet at a later time it will gain focus)    
//FocusOwner (on edit): javax.swing.tree.DefaultTreeCellEditor$DefaultTextField
//editingComponent is by default a DefaultTextField                    
        }        

    @Override
    public Component getTreeCellEditorComponent(final JTree tree, Object value, boolean isSelected, boolean expanded, boolean leaf, int row) {
       Component container = super.getTreeCellEditorComponent(tree, value, isSelected, expanded, leaf, row);
//Note: System.out.println("Components Type: "+containeractually.getClass().getName());
//was used to show it was container, javax.swing.tree.DefaultTreeCellEditor$EditorContainer

//getTreeCellEditorComponent(parameters) is called as soon as editing begins
//also at this time editingComponent != null (aka initialized)
//so it's a good place to add in a Focus Listener

editingComponent.addFocusListener( new FocusListener(){
                @Override  public void focusGained(FocusEvent e) { }
                @Override  public void focusLost(FocusEvent e) {
                tree.stopEditing();}                  } );

//EditorContainer is responsible for displaying the editingComponent
//so we added focusListener, after editingComponent initialized, and before it's used
//(I think the return statement means it's about to be used)
        return container;
        }
}//end MyTreeCellEditor

}//end class