/** A value has changed. This is used as a TreeSelectionListener. */
public void valueChanged(TreeSelectionEvent e) {
JHelpNavigator navigator = getHelpNavigator();
HelpModel helpmodel = navigator.getModel();
debug("ValueChanged: " + e);
debug(" model: " + helpmodel);
// send selected items into navigator
TreeItem[] items = null;
TreePath[] paths = tree.getSelectionPaths();
if (paths != null) {
items = new TreeItem[paths.length];
for (int i = 0; i < paths.length; i++) {
if (paths[i] != null) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) paths[i].getLastPathComponent();
items[i] = (TreeItem) node.getUserObject();
}
}
}
navigator.setSelectedItems(items);
// change current id only if one items is selected
if (items != null && items.length == 1) {
SearchTOCItem item = (SearchTOCItem) items[0];
if (item != null) {
if (item.getID() != null) {
try {
// navigator.setCurrentID(item.getID());
helpmodel.setCurrentID(item.getID(), item.getName(), navigator);
} catch (InvalidHelpSetContextException ex) {
System.err.println("BadID: " + item.getID());
return;
}
} else if (item.getURL() != null) {
// navigator.setCurrentURL(item.getURL());
helpmodel.setCurrentURL(item.getURL(), item.getName(), navigator);
} else {
// no ID, no URL
return;
}
if (helpmodel instanceof TextHelpModel) {
DefaultHighlight h[] = new DefaultHighlight[item.hitCount()];
int i = 0;
Enumeration enum1 = item.getSearchHits();
while (enum1.hasMoreElements()) {
SearchHit info = (SearchHit) enum1.nextElement();
h[i] = new DefaultHighlight(info.getBegin(), info.getEnd());
i++;
}
// using setHighlights() instead of removeAll + add
// avoids one highlighting event
((TextHelpModel) helpmodel).setHighlights(h);
}
}
}
}
/**
* 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);
}
private DefaultMutableTreeNode findIDorURL(DefaultMutableTreeNode node, ID id, URL url) {
SearchTOCItem item = (SearchTOCItem) node.getUserObject();
if (item != null) {
ID testID = item.getID();
if (testID != null && id != null && testID.equals(id)) {
return node;
} else {
URL testURL = item.getURL();
if (testURL != null && url != null && url.sameFile(testURL)) {
return node;
}
}
}
int size = node.getChildCount();
for (int i = 0; i < size; i++) {
DefaultMutableTreeNode tmp = (DefaultMutableTreeNode) node.getChildAt(i);
DefaultMutableTreeNode test = findIDorURL(tmp, id, url);
if (test != null) {
return test;
}
}
return null;
}
