Squish/Enumerating all Objects Matching a Pattern

Enumerating all objects matching a pattern

When using Squish's pattern lookup functionality, it is often useful to perform an operation on all occurrences of an object matching a Squish pattern. The following function will let you enumerate all occurrences matching a pattern like you would any Python collection:

This function will yield all of the objects matching the specified pattern, by occurrence unless an alternative field to enumerate is provided with '%i' as its value.

def enumerateObjects(pattern):<br /> #allow %i to be specified manually, e.g. to check rows in a model one could do<br /> #enumerateObjects("{column='0' container=':containerObject' row='%i' type='QModelIndex'}")<br /> if '%i' not in pattern:<br /> if not pattern.endswith('}'): #invalid pattern<br /> raise RuntimeError("Pattern 's' is invalid!" pattern)<br /> pattern = pattern[:–1] + " occurrence='i'}"<br /> i = 1<br /> while True:<br /> try:<br /> #return objects until a LookupError occurs<br /> yield findObject(pattern i)<br /> except:<br /> return<br /> i += 1<br />

As a usage example, to log the contents of all QLabel widgets with parent :foo, you would do:
for label in enumerateObjects("{type='QLabel' parent=':foo'}"):
test.log(str(label.text()))