/** Move the currently selected element (if any) down in its structure. */
public void moveSelectedElementDown() {
TreePath tp = tree.getSelectionPath();
Object select = tp.getLastPathComponent();
if (select instanceof RuleWrapper) {
LegendTreeModel tm = (LegendTreeModel) tree.getModel();
tm.moveElementDown(tm.getRoot(), select);
refreshIcons();
} else if (select instanceof ILegendPanel) {
RuleWrapper rw = (RuleWrapper) tp.getPath()[tp.getPath().length - 2];
LegendTreeModel tm = (LegendTreeModel) tree.getModel();
tm.moveElementDown(rw, select);
refreshIcons();
}
}
/**
* Adds an element to the tree. It will open a window to let the user choose which type of element
* (legend or rule) it must be.
*/
public void addElement() {
TreePath tp = tree.getSelectionPath();
if (tp == null) {
addRule();
} else {
Object select = tp.getLastPathComponent();
if (select instanceof StyleWrapper) {
addRule();
} else {
addLegend();
}
}
refreshIcons();
}
/**
* Removes the currently selected element from the tree. If it is an inner node, all its children
* will be lost.
*/
public void removeSelectedElement() {
TreePath tp = tree.getSelectionPath();
Object select = tp.getLastPathComponent();
LegendTreeModel tm = (LegendTreeModel) tree.getModel();
if (select instanceof ILegendPanel) {
RuleWrapper rw = (RuleWrapper) tp.getPath()[tp.getPath().length - 2];
tree.setSelectionPath(null);
tm.removeElement(rw, select);
// We refresh the legend container
simpleStyleEditor.showDialogForCurrentlySelectedLegend();
// We refresh the icons
} else if (select instanceof RuleWrapper) {
tree.setSelectionPath(null);
tm.removeElement(tm.getRoot(), select);
simpleStyleEditor.showDialogForCurrentlySelectedLegend();
}
refreshIcons();
}
public LegendTree(final SimpleStyleEditor simpleEditor) {
simpleStyleEditor = simpleEditor;
StyleWrapper style = simpleStyleEditor.getStyleWrapper();
// We create our tree
tree = new JTree();
// We don't want to display the root.
tree.setRootVisible(true);
// We have a custom model to provide... Listeners on the TreeModel
// are added by the tree when calling setModel.
LegendTreeModel ltm = new LegendTreeModel(tree, style);
tree.setModel(ltm);
// ..A custom cell editor...
LegendTreeCellEditor editor = new LegendTreeCellEditor();
editor.setClickCountToStart(2);
tree.setCellEditor(editor);
// ...and a custom TreeCellRenderer.
LegendCellRenderer lcr = new LegendCellRenderer(tree);
tree.setCellRenderer(lcr);
// We want to select only one element at a time.
tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
selectAndShowFirstLegend(style);
// We refresh icons when the selection changes.
TreeSelectionListener tsl =
EventHandler.create(TreeSelectionListener.class, this, "refreshIcons");
tree.addTreeSelectionListener(tsl);
// We refresh the CardLayout of the associated SimpleStyleEditor
TreeSelectionListener select =
EventHandler.create(TreeSelectionListener.class, simpleStyleEditor, "legendSelected");
tree.addTreeSelectionListener(select);
expandAll(tree);
// We want an editable tree
tree.setEditable(true);
initButtons();
this.setLayout(new BorderLayout());
this.add(toolBar, BorderLayout.PAGE_START);
JScrollPane scrollPane = new JScrollPane(tree);
this.add(scrollPane, BorderLayout.CENTER);
refreshIcons();
}
void refresh() {
refreshIcons();
refreshModel();
}