/**
* Get the {@link AstNode} associated with the selected portion of the given editor.
*
* @param editor the editor
* @param caret the caret position in the editor
* @return the associated {@link AstNode}
*/
public static AstNode getNodeAtOffset(DartEditor editor, int caret) {
CompilationUnit cu = editor.getInputUnit();
if (cu == null) {
return null;
}
return new NodeLocator(caret).searchWithin(cu);
}
/**
* Get the element associated with the selected portion of the given input element.
*
* @param editor the editor
* @param offset the beginning of the selection
* @param length the length of the selection
* @return the associated element
*/
public static Element getElementAtOffset(DartEditor editor, int offset, int length) {
CompilationUnit cu = editor.getInputUnit();
AstNode node = new NodeLocator(offset, offset + length).searchWithin(cu);
if (node == null) {
return null;
}
return ElementLocator.locateWithOffset(node, offset);
}