/* (non-Javadoc)
* @see org.eclipse.jface.text.ITextHoverExtension2#getHoverInfo2(org.eclipse.jface.text.ITextViewer, org.eclipse.jface.text.IRegion)
*/
public Object getHoverInfo2(ITextViewer textViewer, IRegion hoverRegion) {
IJavaScriptStackFrame frame = getFrame();
if (frame != null) {
IDocument document = textViewer.getDocument();
if (document != null) {
try {
String variableName = document.get(hoverRegion.getOffset(), hoverRegion.getLength());
IVariable var = findLocalVariable(frame, variableName);
if (var != null) {
return var;
}
// might be in 'this'
var = frame.getThisObject();
try {
IValue val = var == null ? null : var.getValue();
if (val != null) {
IVariable[] vars = val.getVariables();
for (int i = 0; i < vars.length; i++) {
if (vars[i].getName().equals(variableName)) {
return vars[i];
}
}
}
} catch (DebugException de) {
return null;
}
} catch (BadLocationException e) {
return null;
}
}
}
return null;
}
/**
* Returns a local variable in the given frame based on the the given name or <code>null</code> if
* none.
*
* @return local variable or <code>null</code>
*/
private IVariable findLocalVariable(IJavaScriptStackFrame frame, String variableName) {
if (frame != null) {
try {
IVariable[] vars = frame.getVariables();
for (int i = 0; i < vars.length; i++) {
if (vars[i].getName().equals(variableName)) {
return vars[i];
}
}
} catch (DebugException x) {
JavaScriptDebugUIPlugin.log(x);
}
}
return null;
}