Java Jtree只选择子节点而不选择父节点
我正在使用一个Jtree,我被困在一个地方做下面的事情 从图2中Java Jtree只选择子节点而不选择父节点,java,swing,jtree,Java,Swing,Jtree,我正在使用一个Jtree,我被困在一个地方做下面的事情 从图2中我点击一个(复选框),它的所有子项都被选中-很好 来自图3 我单击了D(复选框),它的所有父项(A、B、C)也都被选中。 现在我想做的是 If i select A -> A,B,C,D will eb selected If i Select B-> only B,C,D If c -> C,D If D-> Only D 我使用的代码是: public Component getTreeCellRen
我点击一个(复选框),它的所有子项都被选中-很好
来自图3
我单击了D(复选框),它的所有父项(A、B、C)也都被选中。
现在我想做的是
If i select A -> A,B,C,D will eb selected
If i Select B-> only B,C,D
If c -> C,D
If D-> Only D
我使用的代码是:
public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus){
//delegate is TreeCellrenderer
Component renderer = delegate.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, hasFocus);
TreePath path = tree.getPathForRow(row);
if(path!=null)
{
//Selection Model is TreeSelection Model
if(selectionModel.isPathSelected(path, true)) //Below code.
{
checkBox.setState(checkBox.SELECTED);
if (selected)
{
//Comes here If check box is selected by mouse click
}
}
else
{
checkBox.setState(checkBox.NOT_SELECTED);
}
}
add(checkBox, BorderLayout.WEST);
add(renderer, BorderLayout.CENTER);
return this;
}
isPathSelected方法:
// tells whether given path is selected.
// if dig is true, then a path is assumed to be selected, if
// one of its ancestor is selected.
public boolean isPathSelected(TreePath path, boolean dig){
if(!dig){
return super.isPathSelected(path);
}
while(path!=null && !super.isPathSelected(path)){
path = path.getParentPath();
}
return path!=null;
}
我不确定我是不是刚开始做这件事。请提供帮助您必须从树元素“遍历”子节点:
public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus){
DefaultMutableTreeNode node = (DefaultMutableTreeNode) value;
walkThroug(node, isSelected);
}
private void walkThrough(DefaultMutableTreeNode node, boolean isSelected) {
int cc = node.getChildCount();
//TODO select current node
//something like: node.setSelected(isSelected)
for(int i = 0; i < cc; i++){
DefaultMutableTreeNode childNode = (DefaultMutableTreeNode) node.getChildAt(i);
walkThrough(childNode, isSelected);
}
}
公共组件GetTreeCellRenderComponent(JTree树,对象值,布尔选定,布尔展开,布尔叶,int行,布尔hasFocus){
DefaultMutableTreeNode=(DefaultMutableTreeNode)值;
演练(节点,已选择);
}
私有void演练(DefaultMutableTreeNode节点,选择布尔值){
int cc=node.getChildCount();
//TODO选择当前节点
//类似于:node.setSelected(isSelected)
对于(int i=0;i我断言您的对象(值)是一个DefaultMutableTreeNode,如中所述。为了更快地获得更好的帮助,请发布一个(最小、完整、可验证的示例)。同意MCVE/SSCCE,因为问题是关于TreeCellEditor和在TreeModel中迭代的