/**
* If the dragged data is a structured selection, get any IVariables in it and create expressions
* for each of them. Insert the created expressions at the currently selected target or add them
* to the end of the collection if no target is selected.
*
* @param selection Structured selection containing IVariables
* @return whether the drop was successful
*/
private boolean performVariableOrWatchAdaptableDrop(IStructuredSelection selection) {
List expressions = new ArrayList(selection.size());
for (Iterator itr = selection.iterator(); itr.hasNext(); ) {
Object element = itr.next();
String expressionText = createExpressionString(element);
if (expressionText != null) {
IExpression expression = createExpression(expressionText);
if (expression != null) {
expressions.add(expression);
} else {
DebugUIPlugin.log(
new Status(
IStatus.ERROR,
DebugUIPlugin.getUniqueIdentifier(),
"Drop failed. Watch expression could not be created for the text "
+ expressionText)); //$NON-NLS-1$
return false;
}
} else {
return false;
}
}
if (expressions.size() == selection.size()) {
IExpressionManager manager = DebugPlugin.getDefault().getExpressionManager();
if (manager instanceof ExpressionManager) {
IExpression targetExpression = getTargetExpression(getCurrentTarget());
if (targetExpression != null) {
((ExpressionManager) manager)
.insertExpressions(
(IExpression[]) expressions.toArray(new IExpression[expressions.size()]),
targetExpression,
fInsertBefore);
} else {
((ExpressionManager) manager)
.addExpressions(
(IExpression[]) expressions.toArray(new IExpression[expressions.size()]));
}
return true;
}
}
return false;
}
