import string
import buffer, method, mode, window

class MiniCallback(method.Method):
    def execute(self, w, **vargs):
        app = w.application
        if app.completion_window_is_open():
            app.close_completion_buffer()
        w.buffer.do_callback()

class MiniTabComplete(method.Method):
    def execute(self, w, **vargs):
        app = w.application
        b   = w.buffer
        if b.tabber is None:
            w.application.set_error("No tab completion")
            return
        s1 = b.make_string()
        s2, exists, complete = b.tabber.tab_string(s1, w)
        b.set_data(s2)

        if app.completion_window_is_open():
            w2 = app.get_completion_window()
            if w2.buffer._completion != s2:
                app.close_completion_buffer()

        if app.completion_window_is_open():
            w2 = app.get_completion_window()
            if w2.last_is_visible():
                w2.goto_beginning()
            else:
                w2.page_down()
        else:
            candidates = sorted(b.tabber.get_candidates(s1, w))
            if len(candidates) > 1:
                app.open_completion_buffer(s2, candidates)

class Mini(mode.Fundamental):
    modename = 'Mini'
    actions  = [MiniCallback, MiniTabComplete]
    def __init__(self, w):
        mode.Fundamental.__init__(self, w)
        self.add_bindings('mini-callback', ('RETURN',))
        self.add_bindings('mini-tab-complete', ('TAB',))

install = Mini.install