def subviewsOfView(self, view):
"""
Generates a BFS of the views tree starting at the given view as root.
Yields a tuple of the current view in the tree and its level (view, level)
"""
views = [(view, 0)]
yield views[0]
while views:
(view, level) = views.pop(0)
subviews = base.evaluateExpression('(id)[%s subviews]' % view)
subviewsCount = int(base.evaluateExpression(
'(int)[(id)%s count]' % subviews))
for i in xrange(subviewsCount):
subview = base.evaluateExpression(
'(id)[%s objectAtIndex:%i]' % (subviews, i))
views.append((subview, level + 1))
yield (subview, level + 1)
def convertToLayer(self, viewOrLayer):
"""
Convert the View or layer to a CALayer
"""
expression_cla = '[(id)%s isKindOfClass:(Class)[CALayer class]]' % viewOrLayer
expression_sel = '[(id)%s respondsToSelector:(SEL)@selector(layer)]' % viewOrLayer
if base.evaluateBooleanExpression(expression_cla):
return viewOrLayer
elif base.evaluateBooleanExpression(expression_sel):
return base.evaluateExpression('(CALayer *)[%s layer]' % viewOrLayer)
else:
raise Exception('Argument must be a CALayer, UIView, or NSView.')