Bindable text lists

[theodox]

Adds bindable version of TextScrollList and IconTextScrollList

    from maya import cmds
    from mGui import gui, forms, lists
    from mGui.bindings import bind
    from mGui.observable import ViewCollection
    import re

    items = ViewCollection()

    def create_filter(*args, **kwargs):
        fn = kwargs['sender'].text
        regex = re.compile(fn, re.I)
        test = lambda p: regex.search(p)
        items.update_filter(test)

    with gui.Window() as w:
        with forms.FooterForm() as nav:

            with forms.HeaderForm() as main:
                filter_field = gui.TextField()
                s = lists.BoundIconTextScrollList()

            with forms.HorizontalForm() as footer:
                one = gui.Text(label="Showing: ")
                two = gui.Text(label="0")
                sep = gui.Text(label="/")
                three = gui.Text(label="0")

    filter_field.changeCommand += create_filter
    items > bind() > s.collection
    items.bind.viewCount > bind() > three.bind.label
    items.bind.count > bind() > two.bind.label
    w.show()
    items.add(*[i for i in 'abcdefghiklmnopqrstuvwxyz'])
    items.add('hello world')