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| -rw-r--r-- | urwid/__init__.py | 210 |
1 files changed, 155 insertions, 55 deletions
diff --git a/urwid/__init__.py b/urwid/__init__.py index a6cacf8..99350e7 100644 --- a/urwid/__init__.py +++ b/urwid/__init__.py @@ -20,59 +20,159 @@ # # Urwid web site: http://excess.org/urwid/ -from urwid.version import VERSION, __version__ -from urwid.widget import (FLOW, BOX, FIXED, LEFT, RIGHT, CENTER, TOP, MIDDLE, - BOTTOM, SPACE, ANY, CLIP, PACK, GIVEN, RELATIVE, RELATIVE_100, WEIGHT, - WidgetMeta, - WidgetError, Widget, FlowWidget, BoxWidget, fixed_size, FixedWidget, - Divider, SolidFill, TextError, Text, EditError, Edit, IntEdit, - delegate_to_widget_mixin, WidgetWrapError, WidgetWrap) -from urwid.decoration import (WidgetDecoration, WidgetPlaceholder, - AttrMapError, AttrMap, AttrWrap, BoxAdapterError, BoxAdapter, PaddingError, - Padding, FillerError, Filler, WidgetDisable) -from urwid.container import (GridFlowError, GridFlow, OverlayError, Overlay, - FrameError, Frame, PileError, Pile, ColumnsError, Columns, - WidgetContainerMixin) -from urwid.wimp import (SelectableIcon, CheckBoxError, CheckBox, RadioButton, - Button, PopUpLauncher, PopUpTarget) -from urwid.listbox import (ListWalkerError, ListWalker, PollingListWalker, - SimpleListWalker, SimpleFocusListWalker, ListBoxError, ListBox) -from urwid.graphics import (BigText, LineBox, BarGraphMeta, BarGraphError, - BarGraph, GraphVScale, ProgressBar, scale_bar_values) -from urwid.canvas import (CanvasCache, CanvasError, Canvas, TextCanvas, - BlankCanvas, SolidCanvas, CompositeCanvas, CanvasCombine, CanvasOverlay, - CanvasJoin) -from urwid.font import (get_all_fonts, Font, Thin3x3Font, Thin4x3Font, - HalfBlock5x4Font, HalfBlock6x5Font, HalfBlockHeavy6x5Font, Thin6x6Font, - HalfBlock7x7Font) -from urwid.signals import (MetaSignals, Signals, emit_signal, register_signal, - connect_signal, disconnect_signal) -from urwid.monitored_list import MonitoredList, MonitoredFocusList -from urwid.command_map import (CommandMap, command_map, - REDRAW_SCREEN, CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT, - CURSOR_PAGE_UP, CURSOR_PAGE_DOWN, CURSOR_MAX_LEFT, CURSOR_MAX_RIGHT, - ACTIVATE) -from urwid.main_loop import (ExitMainLoop, MainLoop, SelectEventLoop, - GLibEventLoop, TornadoEventLoop) -try: - from urwid.main_loop import TwistedEventLoop -except ImportError: - pass -from urwid.text_layout import (TextLayout, StandardTextLayout, default_layout, - LayoutSegment) -from urwid.display_common import (UPDATE_PALETTE_ENTRY, DEFAULT, BLACK, - DARK_RED, DARK_GREEN, BROWN, DARK_BLUE, DARK_MAGENTA, DARK_CYAN, - LIGHT_GRAY, DARK_GRAY, LIGHT_RED, LIGHT_GREEN, YELLOW, LIGHT_BLUE, - LIGHT_MAGENTA, LIGHT_CYAN, WHITE, AttrSpecError, AttrSpec, RealTerminal, - ScreenError, BaseScreen) -from urwid.util import (calc_text_pos, calc_width, is_wide_char, - move_next_char, move_prev_char, within_double_byte, detected_encoding, - set_encoding, get_encoding_mode, apply_target_encoding, supports_unicode, - calc_trim_text, TagMarkupException, decompose_tagmarkup, MetaSuper, - int_scale, is_mouse_event) -from urwid.treetools import (TreeWidgetError, TreeWidget, TreeNode, - ParentNode, TreeWalker, TreeListBox) -from urwid.vterm import (TermModes, TermCharset, TermScroller, TermCanvas, - Terminal) +import sys -from urwid import raw_display +class _UrwidModule(object): + """ + Import specific names from deeper in the urwid module hierarchy + to the top level because urwid was once a small library with + everything in one module, and life is easier for users this way. + + This class lazily imports so all users don't need to pay the + price of importing almost all urwid sub-modules on startup. + """ + from urwid.version import VERSION, __version__ + + _names = { + 'widget': ( + 'FLOW', 'BOX', 'FIXED', 'LEFT', 'RIGHT', 'CENTER', 'TOP', 'MIDDLE', + 'BOTTOM', 'SPACE', 'ANY', 'CLIP', 'PACK', 'GIVEN', 'RELATIVE', + 'RELATIVE_100', 'WEIGHT', 'WidgetMeta', + 'WidgetError', 'Widget', 'FlowWidget', 'BoxWidget', 'fixed_size', + 'FixedWidget', 'Divider', 'SolidFill', 'TextError', 'Text', + 'EditError', 'Edit', 'IntEdit', 'delegate_to_widget_mixin', + 'WidgetWrapError', 'WidgetWrap'), + 'decoration': ( + 'WidgetDecoration', 'WidgetPlaceholder', + 'AttrMapError', 'AttrMap', 'AttrWrap', 'BoxAdapterError', + 'BoxAdapter', 'PaddingError', + 'Padding', 'FillerError', 'Filler', 'WidgetDisable'), + 'container': ( + 'GridFlowError', 'GridFlow', 'OverlayError', 'Overlay', + 'FrameError', 'Frame', 'PileError', 'Pile', 'ColumnsError', + 'Columns', 'WidgetContainerMixin'), + 'wimp': ( + 'SelectableIcon', 'CheckBoxError', 'CheckBox', 'RadioButton', + 'Button', 'PopUpLauncher', 'PopUpTarget'), + 'listbox': ( + 'ListWalkerError', 'ListWalker', 'PollingListWalker', + 'SimpleListWalker', 'SimpleFocusListWalker', 'ListBoxError', + 'ListBox'), + 'graphics': ( + 'BigText', 'LineBox', 'BarGraphMeta', 'BarGraphError', + 'BarGraph', 'GraphVScale', 'ProgressBar', 'scale_bar_values'), + 'canvas': ( + 'CanvasCache', 'CanvasError', 'Canvas', 'TextCanvas', + 'BlankCanvas', 'SolidCanvas', 'CompositeCanvas', 'CanvasCombine', + 'CanvasOverlay', 'CanvasJoin'), + 'font': ( + 'get_all_fonts', 'Font', 'Thin3x3Font', 'Thin4x3Font', + 'HalfBlock5x4Font', 'HalfBlock6x5Font', 'HalfBlockHeavy6x5Font', + 'Thin6x6Font', 'HalfBlock7x7Font'), + 'signals': ( + 'MetaSignals', 'Signals', 'emit_signal', 'register_signal', + 'connect_signal', 'disconnect_signal'), + 'monitored_list': ( + 'MonitoredList', 'MonitoredFocusList'), + 'command_map': ( + 'CommandMap', 'command_map', + 'REDRAW_SCREEN', 'CURSOR_UP', 'CURSOR_DOWN', 'CURSOR_LEFT', + 'CURSOR_RIGHT', 'CURSOR_PAGE_UP', 'CURSOR_PAGE_DOWN', + 'CURSOR_MAX_LEFT', 'CURSOR_MAX_RIGHT', 'ACTIVATE'), + 'main_loop': ( + 'ExitMainLoop', 'MainLoop', 'SelectEventLoop', + 'TwistedEventLoop', 'GLibEventLoop', 'TornadoEventLoop'), + 'text_layout': ( + 'TextLayout', 'StandardTextLayout', 'default_layout', + 'LayoutSegment'), + 'display_common': ( + 'UPDATE_PALETTE_ENTRY', 'DEFAULT', 'BLACK', + 'DARK_RED', 'DARK_GREEN', 'BROWN', 'DARK_BLUE', 'DARK_MAGENTA', + 'DARK_CYAN', 'LIGHT_GRAY', 'DARK_GRAY', 'LIGHT_RED', 'LIGHT_GREEN', + 'YELLOW', 'LIGHT_BLUE', 'LIGHT_MAGENTA', 'LIGHT_CYAN', 'WHITE', + 'AttrSpecError', 'AttrSpec', 'RealTerminal', + 'ScreenError', 'BaseScreen'), + 'util': ( + 'calc_text_pos', 'calc_width', 'is_wide_char', + 'move_next_char', 'move_prev_char', 'within_double_byte', + 'detected_encoding', 'set_encoding', 'get_encoding_mode', + 'apply_target_encoding', 'supports_unicode', + 'calc_trim_text', 'TagMarkupException', 'decompose_tagmarkup', + 'MetaSuper', 'int_scale', 'is_mouse_event'), + 'treetools': ( + 'TreeWidgetError', 'TreeWidget', 'TreeNode', + 'ParentNode', 'TreeWalker', 'TreeListBox'), + 'vterm': ( + 'TermModes', 'TermCharset', 'TermScroller', 'TermCanvas', + 'Terminal'), + } + + _reverse_names = dict((name, mod) for mod, names in _names.iteritems() + for name in names) + + # allow imports of sub-modules to continue to work properly + __path__ = __path__ + + def __getattr__(self, name): + """ + Lazy import machinery. Use normal import statements to make + it easier for things like pyinstaller to tell what modules + get imported. + """ + if name == 'raw_display': + # special case: + # urwid.raw_display.Screen should work after import urwid + import urwid.raw_display + self.raw_display = urwid.raw_display + return urwid.raw_display + + found = self._reverse_names.get(name) + if not found: + raise AttributeError("urwid has no attribute '%s'" % name) + elif found == 'widget': + import urwid.widget + elif found == 'decoration': + import urwid.decoration + elif found == 'container': + import urwid.container + elif found == 'wimp': + import urwid.wimp + elif found == 'listbox': + import urwid.listbox + elif found == 'graphics': + import urwid.graphics + elif found == 'canvas': + import urwid.canvas + elif found == 'font': + import urwid.font + elif found == 'signals': + import urwid.signals + elif found == 'monitored_list': + import urwid.monitored_list + elif found == 'command_map': + import urwid.command_map + elif found == 'main_loop': + import urwid.main_loop + elif found == 'text_layout': + import urwid.text_layout + elif found == 'display_common': + import urwid.display_common + elif found == 'util': + import urwid.util + elif found == 'treetols': + import urwid.treetols + elif found == 'vterm': + import urwid.vterm + else: + assert 0, 'missing import line for %s' % found + + if found: + module = getattr(urwid, found) + for n in self._names[found]: + setattr(self, n, getattr(module, n)) + + return getattr(self, name) + + +# https://mail.python.org/pipermail/python-ideas/2012-May/014969.html +sys.modules[__name__] = _UrwidModule() |