java-用JTree进行文字包装
作者：互联网
我想知道是否有任何方法可以在JTrees中使用自动换行.我在节点的文本中使用HTML,我不确定这是否重要.
解决方法:
好吧,您可以尝试如下.
JTree tree = new JTree();
DefaultMutableTreeNode root = new DefaultMutableTreeNode("Animals");
DefaultTreeModel model = new DefaultTreeModel(root);
tree.setModel(model);
root.add(new DefaultMutableTreeNode(new Animal("Dog","ACS")));
root.add(new DefaultMutableTreeNode(new Animal("Cat","BCS")));
root.add(new DefaultMutableTreeNode(new Animal("Lion","FCS")));
root.add(new DefaultMutableTreeNode(new Animal("Tiger","<html>Hello World!<br>blahblahblah</html>")));
DefaultTreeSelectionModel sModel = new DefaultTreeSelectionModel();
sModel.setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
tree.setSelectionModel(sModel);
tree.addTreeSelectionListener(new TreeSelectionListener() {
@Override
public void valueChanged(TreeSelectionEvent selection) {
DefaultMutableTreeNode selectedNode = (DefaultMutableTreeNode)selection.getPath().getLastPathComponent();
if(selectedNode.isLeaf()){
Animal animal = (Animal)selectedNode.getUserObject();
}
}
});
tree.setCellRenderer( new DefaultTreeCellRenderer(){
@Override
public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel, boolean expanded,
boolean leaf, int row, boolean hasFocus) {
if(value != null ){
DefaultMutableTreeNode node = (DefaultMutableTreeNode)value;
if(node.isLeaf()){
Animal animal = (Animal)((DefaultMutableTreeNode)value).getUserObject();
this.setText(animal.name);
}else {
return super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, hasFocus);
}
}
return this;
}
});
这给了我下面的输出.
希望对您有帮助.
对于自动换行的内容,您可以使用html
请参阅此link中安德鲁的回答
标签：jtree,swing,word-wrap,java 来源： https://codeday.me/bug/20191118/2028927.html