show.py

#!/usr/bin/python
# -*- coding: utf-8 -*-

import os
import sublime
from os.path import basename

ST3 = int(sublime.version()) >= 3000

if ST3:
    from .common import first, set_proper_scheme, calc_width, get_group
    SYNTAX_EXTENSION = '.sublime-syntax'
else:
    from common import first, set_proper_scheme, calc_width, get_group
    SYNTAX_EXTENSION = '.hidden-tmLanguage'


def set_active_group(window, view, other_group):
    nag = window.active_group()
    if other_group:
        group = 0 if other_group == 'left' else 1
        groups = window.num_groups()
        if groups == 1:
            width = calc_width(view)
            cols = [0.0, width, 1.0] if other_group == 'left' else [0.0, 1-width, 1.0]
            window.set_layout({"cols": cols, "rows": [0.0, 1.0], "cells": [[0, 0, 1, 1], [1, 0, 2, 1]]})
        elif view:
            group = get_group(groups, nag)
        window.set_view_index(view, group, 0)
    else:
        group = nag

    # when other_group is left, we need move all views to right except FB view
    if nag == 0 and other_group == 'left' and group == 0:
        for v in reversed(window.views_in_group(nag)[1:]):
            window.set_view_index(v, 1, 0)

    return (nag, group)


def set_view(view_id, window, ignore_existing, path, single_pane):
    view = None
    if view_id:
        # The Goto command was used so the view is already known and its contents should be
        # replaced with the new path.
        view = first(window.views(), lambda v: v.id() == view_id)

    if not view and not ignore_existing:
        # See if a view for this path already exists.
        same_path = lambda v: v.settings().get('dired_path') == path
        # See if any reusable view exists in case of single_pane argument
        any_path = lambda v: v.score_selector(0, "text.dired") > 0
        view = first(window.views(), any_path if single_pane else same_path)

    if not view:
        view = window.new_file()
        view.settings().add_on_change('color_scheme', lambda: set_proper_scheme(view))
        view.set_syntax_file('Packages/FileBrowser/dired' + SYNTAX_EXTENSION)
        view.set_scratch(True)
        reset_sels = True
    else:
        reset_sels = path != view.settings().get('dired_path', '')

    return (view, reset_sels)


def show(window, path, view_id=None, ignore_existing=False, single_pane=False, goto='', other_group=''):
    """
    Determines the correct view to use, creating one if necessary, and prepares it.
    """
    if other_group:
        prev_focus = window.active_view()
        # simulate 'toggle sidebar':
        if prev_focus and 'dired' in prev_focus.scope_name(0):
            window.run_command('close_file')
            return

    if not path.endswith(os.sep):
        path += os.sep

    view, reset_sels = set_view(view_id, window, ignore_existing, path, single_pane)

    nag, group = set_active_group(window, view, other_group)

    if other_group and prev_focus:
        window.focus_view(prev_focus)

    if path == os.sep:
        view_name = os.sep
    else:
        view_name = basename(path.rstrip(os.sep))

    if ST3:
        name = u"𝌆 {0}".format(view_name)
    else:
        name = u"■ {0}".format(view_name)

    view.set_name(name)
    view.settings().set('dired_path', path)
    view.settings().set('dired_rename_mode', False)

    # forcibly shoot on_activated, because when view was created it didnot have any settings
    window.show_quick_panel(['a', 'b'], None)
    view.run_command('dired_refresh', {'goto': goto, 'reset_sels': reset_sels})
    window.run_command('hide_overlay')
    window.focus_view(view)