Plugin JTree with custom TreeCellRenderer Follow
Answered
Hello,
I have a JTree component with three levels (server, folder, file). I use custom TreeCellRenderer to style icons for each level. There is an issue when IDEA theme change triggered (dark to light / light to dark) and all UI text elements change color, the color of JTree node JLabels text isn't changed.
My custom TreeCellRenderer:
public class CustomTreeCellRenderer implements javax.swing.tree.TreeCellRenderer {
private JLabel label;
public CustomTreeCellRenderer() {
label = new JLabel();
}
public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded,
boolean leaf, int row, boolean hasFocus) {
if (value instanceof TreeNodeHost) {
TreeNodeHost host = (TreeNodeHost) value;
label.setIcon(host.getIcon());
label.setText(host.configuration.getFullHostString());
} else if (value instanceof TreeNodeFolder) {
TreeNodeFolder folder = (TreeNodeFolder) value;
label.setIcon(folder.getIcon());
label.setText(folder.getUserObject().toString());
} else if (value instanceof TreeNodeFile) {
TreeNodeFile file = (TreeNodeFile) value;
label.setIcon(file.getIcon());
label.setText(file.getUserObject().toString());
}
return label;
}
}
where TreeNodeHost, TreeNodeFolder, TreeNodeFile are custom Tree Nodes objects (extend DefaultMutableTreeNode).
How would one go about changing label color on theme change?
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Please make your renderer extends javax.swing.tree.DefaultTreeCellRenderer like this:
Thank you Vassiliy, now my tree change color together with theme change.
Hello Vassiliy, I am also facing the exact same issue. I tried the DefaultTreeCellRenderer but unable to fix this theme change issue. Can you please suggest If there is anything I need to change in the below code:
class Renderer extends DefaultTreeCellRenderer {
private JLabel label;
public Renderer() {
this.label = new JLabel();
}
@Override
public Component getTreeCellRendererComponent(
final JTree tree,
final Object value,
final boolean sel,
final boolean expanded,
final boolean leaf,
final int row,
final boolean hasFocus) {
label =
(JLabel)
super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, hasFocus);
DefaultMutableTreeNode node = (DefaultMutableTreeNode) value;
if (node.getUserObject() instanceof VseResponse) {
final VseResponse response = (VseResponse) node.getUserObject();
label.setText(response.getName());
label.setIcon(VSEManagerIcons.VSE_PLUGIN_ICON);
}
if (node.getUserObject() instanceof VseVirtualServiceResponse) {
final VseVirtualServiceResponse response = (VseVirtualServiceResponse) node.getUserObject();
label.setText(response.getName());
label.setIcon(VSEConstants.VSE_STATUS[Integer.parseInt(response.getStatus())]);
}
return label;
}
}