public void keyPressed(KeyEvent e) {
IStructuredSelection s = (IStructuredSelection) getSelection();
switch (e.keyCode) {
case SWT.CR:
if (isHierarchical()) {
if (s.size() == 1) {
TagTreeItem selected = (TagTreeItem) s.getFirstElement();
if (selected.hasChildren()) {
viewer.setInput(selected);
refresh();
}
}
}
break;
case SWT.BS:
if (isHierarchical()) {
TagTreeItem current = (TagTreeItem) viewer.getInput();
if (current.getParent() != null) {
viewer.setInput(current.getParent());
refresh();
}
}
break;
}
}
private void refreshBreadCrumb() {
String linkText = "";
TagTreeItem current = (TagTreeItem) viewer.getInput();
int parentNum = 0;
while (current != null) {
String text = current.getName();
int dot = text.lastIndexOf('.');
if (dot > 0 && dot < text.length() - 1) {
text = text.substring(dot + 1);
}
linkText = "<a href=\"" + parentNum + "\">" + text + "</a>" + linkText;
if (current.getParent() != null && current.getParent() != input.getRoot()) {
linkText = "." + linkText;
} else {
linkText = " " + linkText;
}
current = current.getParent();
parentNum++;
}
formText.setText("<form><p>" + linkText + "</p></form>", true, false);
}
public void linkActivated(HyperlinkEvent e) {
String ref = (String) e.getHref();
int number = Integer.parseInt(ref);
if (number == 0) {
// Clear the selection if root is selected
if (viewer.getInput() == input.getRoot())
viewer.setSelection(new StructuredSelection(new Object[0]), true);
return;
}
// get the parent numbered "number"
TagTreeItem current = (TagTreeItem) viewer.getInput();
while (current != null && number > 0) {
current = current.getParent();
number--;
}
if (current == null) {
viewer.setInput(input.getRoot());
} else {
viewer.setInput(current);
}
refresh();
}
