Often you have an array of items but you don't want to show them all in the GUI...
BindItems and BindRepeat currently show the entire array of items, requiring a 'shadow model' that only has the visible items inside.
Dynamic array_model
Sometimes your array_model needs to be generated dynamically. For example it may be composed of array_a + array_b to generate array_ab. This requires extra glue function in your Component to generate the extra array_ab model that needs to get updated any time array_a or array_b is modified.
Proposal:
Allow the () suffix to call a Callable when specifying the array_model property of BindItems and BindRepeat classes.
E.G.: array_model = array_ab()
array_ab should be a Callable on the owner that takes no arguments.
Calls to this callable should be tracked. If new_result.hash() == old_result.hash() then return old_result to prevent extra change detection.
Problems:
Filtering array_model
Often you have an array of items but you don't want to show them all in the GUI...
BindItems and BindRepeat currently show the entire array of items, requiring a 'shadow model' that only has the visible items inside.
Dynamic array_model
Sometimes your array_model needs to be generated dynamically. For example it may be composed of
array_a + array_bto generatearray_ab. This requires extra glue function in your Component to generate the extraarray_abmodel that needs to get updated any timearray_aorarray_bis modified.Proposal:
Allow the
()suffix to call a Callable when specifying thearray_modelproperty ofBindItemsandBindRepeatclasses.E.G.:
array_model=array_ab()array_abshould be aCallableon theownerthat takes no arguments.new_result.hash() == old_result.hash()then returnold_resultto prevent extra change detection.