/**
* Processes an idChanged event. Search is different from all other navigators in that you while
* search tree is synchronized the highlighting doesn't occur unless selected from the search
* navigator.
*/
public void idChanged(HelpModelEvent e) {
ID id = e.getID();
URL url = e.getURL();
HelpModel helpModel = searchnav.getModel();
debug("idChanged(" + e + ")");
if (e.getSource() != helpModel) {
debug("Internal inconsistency!");
debug(" " + e.getSource() + " != " + helpModel);
throw new Error("Internal error");
}
TreePath s = tree.getSelectionPath();
if (s != null) {
Object o = s.getLastPathComponent();
// should require only a TreeNode
if (o instanceof DefaultMutableTreeNode) {
DefaultMutableTreeNode tn = (DefaultMutableTreeNode) o;
SearchTOCItem item = (SearchTOCItem) tn.getUserObject();
if (item != null) {
ID nId = item.getID();
if (nId != null && nId.equals(id)) {
return;
}
}
}
}
DefaultMutableTreeNode node = findIDorURL(topNode, id, url);
if (node == null) {
// node doesn't exist. Need to clear the selection.
debug("node didn't exist");
tree.clearSelection();
return;
}
TreePath path = new TreePath(node.getPath());
tree.expandPath(path);
tree.setSelectionPath(path);
tree.scrollPathToVisible(path);
}
public static ActionCallback showAndSelect(
final JTree tree,
int top,
int bottom,
final int row,
final int previous,
boolean addToSelection,
final boolean scroll) {
final TreePath path = tree.getPathForRow(row);
if (path == null) return new ActionCallback.Done();
final int size = tree.getRowCount();
if (size == 0) {
tree.clearSelection();
return new ActionCallback.Done();
}
if (top < 0) {
top = 0;
}
if (bottom >= size) {
bottom = size - 1;
}
if (row >= tree.getRowCount()) return new ActionCallback.Done();
if (!tree.isValid()) {
tree.validate();
}
final Rectangle rowBounds = tree.getRowBounds(row);
if (rowBounds == null) return new ActionCallback.Done();
Rectangle topBounds = tree.getRowBounds(top);
if (topBounds == null) {
topBounds = rowBounds;
}
Rectangle bottomBounds = tree.getRowBounds(bottom);
if (bottomBounds == null) {
bottomBounds = rowBounds;
}
Rectangle bounds = topBounds.union(bottomBounds);
bounds.x = rowBounds.x;
bounds.width = rowBounds.width;
final Rectangle visible = tree.getVisibleRect();
if (visible.contains(bounds)) {
bounds = null;
} else {
final Component comp =
tree.getCellRenderer()
.getTreeCellRendererComponent(
tree, path.getLastPathComponent(), true, true, false, row, false);
if (comp instanceof SimpleColoredComponent) {
final SimpleColoredComponent renderer = ((SimpleColoredComponent) comp);
final Dimension scrollableSize = renderer.computePreferredSize(true);
bounds.width = scrollableSize.width;
}
}
final ActionCallback callback = new ActionCallback();
if (!tree.isRowSelected(row)) {
if (addToSelection) {
tree.getSelectionModel().addSelectionPath(tree.getPathForRow(row));
} else {
tree.setSelectionRow(row);
}
}
if (bounds != null) {
final Range<Integer> range = getExpandControlRange(tree, path);
if (range != null) {
int delta = bounds.x - range.getFrom().intValue();
bounds.x -= delta;
bounds.width -= delta;
}
if (visible.width < bounds.width) {
bounds.width = visible.width;
}
final Rectangle b1 = bounds;
final Runnable runnable =
new Runnable() {
public void run() {
if (scroll) {
tree.scrollRectToVisible(b1);
}
callback.setDone();
}
};
if (ApplicationManager.getApplication().isUnitTestMode()) {
runnable.run();
} else {
SwingUtilities.invokeLater(runnable);
}
} else {
callback.setDone();
}
return callback;
}
