我創建了一個呈現帶有複選框的JTree的以下呈示器,並且我想向不同的節點添加不同的顏色和圖標。我該怎麼做?請幫幫我。先謝謝你。java swing - 爲我的JTree節點添加顏色
class CheckTreeCellRenderer extends JPanel implements TreeCellRenderer {
private CheckTreeSelectionModel selectionModel;
private TreeCellRenderer delegate;
private TristateCheckBox checkBox = new TristateCheckBox("",null,true);
public static final State NOT_SELECTED = new State();
public static final State SELECTED = new State();
public static final State DONT_CARE = new State();
public CheckTreeCellRenderer(TreeCellRenderer delegate, CheckTreeSelectionModel selectionModel) {
this.delegate = delegate;
this.selectionModel = selectionModel;
setLayout(new BorderLayout());
setOpaque(false);
checkBox.setState(Boolean.TRUE);
revalidate();
checkBox.setOpaque(false);
}
public Component getTreeCellRendererComponent
(JTree tree, Object value, boolean selected, boolean expanded,
boolean leaf, int row, boolean hasFocus) {
Component renderer = delegate.getTreeCellRendererComponent
(tree, value, selected, expanded, leaf, row, hasFocus);
TreePath path = tree.getPathForRow(row);
if(path!=null){
if(selectionModel.isPathSelected(path, true)) {
checkBox.setState(Boolean.TRUE);
}
else {
checkBox.setState
(selectionModel.isPartiallySelected(path) ? null : Boolean.FALSE);
}
}
setBackground(Color.pink);
removeAll();
add(checkBox, BorderLayout.WEST);
add(renderer, BorderLayout.CENTER);
return this;
}
}
我已經回答了同樣的問題很多次,我想我會通過這個。 –
那麼爲什麼評論呢?相反,投票結束並引用重複的答案。至少OP可以引用重複問題。 – Adamski
嗨,朋友,我很抱歉。我想我已經問過一個重複的問題。其實我不知道在哪裏尋找同樣的問題。如果它已經回答了,請告訴我在哪裏可以得到它。我請求你請幫助我。 – Nilesh