grthtrhthjhtyjytjytkergtrhtrjytjerhrfh4:24 29/09/2026a Bjj@sddlmZmZddlZddlZddlZddlZddlZddlZddl m Z ddl m Z ddl mZz ddlZWneyYn0ddlmZmZddlmZmZddlmZmZdd lmZdd lmZdd lmZd Z Gd dde!Z"Gddde!Z#Gddde$Z%Gddde$Z&Gddde&Z'Gddde&Z(Gddde&Z)zddl*m+Z+Wneyte$Z+Yn0Gddde+Z,Gddde&Z-Gd d!d!e&Z.ej/d"krd#d$l0m1Z1d+d&d'Z2d(d)Z3e4d*kre3dS),)divisionprint_functionNwraps)count)WeakKeyDictionary)StoppingContextis_mouse_event)PYTHON3reraise) command_map REDRAW_SCREEN) PopUpTarget)signals)INPUT_DESCRIPTORS_CHANGEDic@seZdZdZdS) ExitMainLoopz_ When this exception is raised within a main loop the main loop will exit cleanly. N)__name__ __module__ __qualname____doc__rr5/usr/lib64/python3.9/site-packages/urwid/main_loop.pyr1src@s eZdZdS)CantUseExternalLoopN)rrrrrrrr8src@seZdZdZd=ddZdd Zed d ed d ZddZedd eZ d>ddZ d?ddZ ddZ ddZ ddZddZddZdd Zd!d"Zd#d$Zd%d&Zd'd(Zd)d*Zd+d,Zd-d.Zd/d0Zd1d2Zd3d4Zd5d6Zd7d8Zd9d:Zd;d<ZdS)@MainLoopa This is the standard main loop implementation for a single interactive session. :param widget: the topmost widget used for painting the screen, stored as :attr:`widget` and may be modified. Must be a box widget. :type widget: widget instance :param palette: initial palette for screen :type palette: iterable of palette entries :param screen: screen to use, default is a new :class:`raw_display.Screen` instance; stored as :attr:`screen` :type screen: display module screen instance :param handle_mouse: ``True`` to ask :attr:`.screen` to process mouse events :type handle_mouse: bool :param input_filter: a function to filter input before sending it to :attr:`.widget`, called from :meth:`.input_filter` :type input_filter: callable :param unhandled_input: a function called when input is not handled by :attr:`.widget`, called from :meth:`.unhandled_input` :type unhandled_input: callable :param event_loop: if :attr:`.screen` supports external an event loop it may be given here, default is a new :class:`SelectEventLoop` instance; stored as :attr:`.event_loop` :type event_loop: event loop instance :param pop_ups: `True` to wrap :attr:`.widget` with a :class:`PopUpTarget` instance to allow any widget to open a pop-up anywhere on the screen :type pop_ups: boolean .. attribute:: screen The screen object this main loop uses for screen updates and reading input .. attribute:: event_loop The event loop object this main loop uses for waiting on alarms and IO rNTFc Cs||_||_||_|s*ddlm} | }|r8||||_d|_||_ ||_ t |dsp|durpt d|f|dur~t }||_t |jdr|jj|j_i|_dS)Nr) raw_displayhook_event_loopz=screen object passed %r does not support external event loopssignal_handler_setter)_widget handle_mousepop_upsurwidrZScreenZregister_palettescreen screen_size_unhandled_input _input_filterhasattrNotImplementedErrorSelectEventLoop event_loopset_signal_handlerr _watch_pipes) selfwidgetZpaletter!r input_filterunhandled_inputr(rrrrr__init__is0     zMainLoop.__init__cCs$||_|jr|j|j_n|j|_dSN)rr_topmost_widgetZoriginal_widget)r+r,rrr _set_widgets zMainLoop._set_widgetcCs|jSr0)rr+rrrzMainLoop.zj Property for the topmost widget used to draw the screen. This must be a box widget. )doccCs$||_|rt|j|_n|j|_dSr0)_pop_upsrrr1)r+rrrr _set_pop_upsszMainLoop._set_pop_upscCs|jSr0)r7r3rrrr4r5csfdd}j||S)a_ Schedule an alarm in *sec* seconds that will call *callback* from the within the :meth:`run` method. :param sec: seconds until alarm :type sec: float :param callback: function to call with two parameters: this main loop object and *user_data* :type callback: callable csdSr0rrcallbackr+ user_datarrcbsz!MainLoop.set_alarm_in..cb)r(alarm)r+secr:r;r<rr9r set_alarm_ins zMainLoop.set_alarm_incs&fdd}j|t|S)a Schedule an alarm at *tm* time that will call *callback* from the within the :meth:`run` function. Returns a handle that may be passed to :meth:`remove_alarm`. :param tm: time to call callback e.g. ``time.time() + 5`` :type tm: float :param callback: function to call with two parameters: this main loop object and *user_data* :type callback: callable csdSr0rrr9rrr<sz!MainLoop.set_alarm_at..cb)r(r=time)r+tmr:r;r<rr9r set_alarm_ats zMainLoop.set_alarm_atcCs |j|S)zf Remove an alarm. Return ``True`` if *handle* was found, ``False`` otherwise. )r( remove_alarmr+handlerrrrCszMainLoop.remove_alarmcsTt\}ttjtjdfdd}j|fj|<|S)a Create a pipe for use by a subprocess or thread to trigger a callback in the process/thread running the main loop. :param callback: function taking one parameter to call from within the process/thread running the main loop :type callback: callable This method returns a file descriptor attached to the write end of a pipe. The read end of the pipe is added to the list of files :attr:`event_loop` is watching. When data is written to the pipe the callback function will be called and passed a single value containing data read from the pipe. This method may be used any time you want to update widgets from another thread or subprocess. Data may be written to the returned file descriptor with ``os.write(fd, data)``. Ensure that data is less than 512 bytes (or 4K on Linux) so that the callback will be triggered just once with the complete value of data passed in. If the callback returns ``False`` then the watch will be removed from :attr:`event_loop` and the read end of the pipe will be closed. You are responsible for closing the write end of the pipe with ``os.close(fd)``. Ncs6tt}|}|dur2jtdSNF)osreadPIPE_BUFFER_READ_SIZEr(remove_watch_fileclose)datarvalr:pipe_rdr+ watch_handlerrr<s   zMainLoop.watch_pipe..cb)rGpipefcntlZF_SETFL O_NONBLOCKr( watch_filer*)r+r:Zpipe_wrr<rrNr watch_pipes zMainLoop.watch_pipecCsHz|j|\}}Wnty(YdS0|j|s:dSt|dS)z Close the read end of the pipe and remove the watch created by :meth:`watch_pipe`. You are responsible for closing the write end of the pipe. Returns ``True`` if the watch pipe exists, ``False`` otherwise FT)r*popKeyErrorr(rJrGrK)r+Zwrite_fdrPrOrrrremove_watch_pipes   zMainLoop.remove_watch_pipecCs|j||S)z Call *callback* when *fd* has some data to read. No parameters are passed to callback. Returns a handle that may be passed to :meth:`remove_watch_file`. )r(rTr+fdr:rrrrTszMainLoop.watch_filecCs |j|S)zn Remove a watch file. Returns ``True`` if the watch file exists, ``False`` otherwise. )r(rJrDrrrrJ szMainLoop.remove_watch_filecCs$z |WntyYn0dS)an Start the main loop handling input events and updating the screen. The loop will continue until an :exc:`ExitMainLoop` exception is raised. If you would prefer to manage the event loop yourself, don't use this method. Instead, call :meth:`start` before starting the event loop, and :meth:`stop` once it's finished. N)_runrr3rrrruns   z MainLoop.runcCsdS)a- >>> w = _refl("widget") # _refl prints out function calls >>> w.render_rval = "fake canvas" # *_rval is used for return values >>> scr = _refl("screen") >>> scr.get_input_descriptors_rval = [42] >>> scr.get_cols_rows_rval = (20, 10) >>> scr.started = True >>> scr._urwid_signals = {} >>> evl = _refl("event_loop") >>> evl.enter_idle_rval = 1 >>> evl.watch_file_rval = 2 >>> ml = MainLoop(w, [], scr, event_loop=evl) >>> ml.run() # doctest:+ELLIPSIS screen.start() screen.set_mouse_tracking() screen.unhook_event_loop(...) screen.hook_event_loop(...) event_loop.enter_idle() event_loop.run() event_loop.remove_enter_idle(1) screen.unhook_event_loop(...) screen.stop() >>> ml.draw_screen() # doctest:+ELLIPSIS screen.get_cols_rows() widget.render((20, 10), focus=True) screen.draw_screen((20, 10), 'fake canvas') Nrr3rrr _test_run"szMainLoop._test_runcCsx|j|jr|jt|jds.tdzt|jt|j Wnt yVYn0| |j |j |_t|S)a Sets up the main loop, hooking into the event loop where necessary. Starts the :attr:`screen` if it hasn't already been started. If you want to control starting and stopping the event loop yourself, you should call this method before starting, and call `stop` once the loop has finished. You may also use this method as a context manager, which will stop the loop automatically at the end of the block: with main_loop.start(): ... Note that some event loop implementations don't handle exceptions specially if you manage the event loop yourself. In particular, the Twisted and asyncio loops won't stop automatically when :exc:`ExitMainLoop` (or anything else) is raised. rz1Screen {0!r} doesn't support external event loops)r!startrZset_mouse_trackingr%rrZconnect_signalr_reset_input_descriptors NameErrorr( enter_idle entering_idle idle_handlerr3rrrr^?s      zMainLoop.startcCs@|j|j|`t|jt|j|j|j|j dS)z Cleans up any hooks added to the event loop. Only call this if you're managing the event loop yourself, after the loop stops. N) r(remove_enter_idlercrZdisconnect_signalr!rr_unhook_event_loopstopr3rrrrfes z MainLoop.stopcCs$|j|j|j|j|jdSr0)r!rer(r_updater3rrrr_rsz!MainLoop._reset_input_descriptorsc Cszz |Wn8tyDz|W|jYS|j0Yn0z|jWn|jYn0|dSr0)r^r_run_screen_event_loopr!rfr(r\r3rrrr[vs    z MainLoop._runcCs,|||}|r(||d|vr(d|_dS)a >>> w = _refl("widget") >>> w.selectable_rval = True >>> w.mouse_event_rval = True >>> scr = _refl("screen") >>> scr.get_cols_rows_rval = (15, 5) >>> evl = _refl("event_loop") >>> ml = MainLoop(w, [], scr, event_loop=evl) >>> ml._input_timeout = "old timeout" >>> ml._update(['y'], [121]) # doctest:+ELLIPSIS screen.get_cols_rows() widget.selectable() widget.keypress((15, 5), 'y') >>> ml._update([("mouse press", 1, 5, 4)], []) widget.mouse_event((15, 5), 'mouse press', 1, 5, 4, focus=True) >>> ml._update([], []) window resizeN)r- process_inputr"r+keysrawrrrrgs   zMainLoop._updatecCsd}||s&|jjr&t|jj}d}|s|rVtd|dt}|j|n |jd|j d\}}|s*|r*|dt}|dkr*qq*| ||}|r| ||r|dt}|dkrq|\}}}||jjrt|jj}qd}qd|vrd|_ qdS)z This method is used when the screen does not support using external event loops. The alarms stored in the SelectEventLoop in :attr:`event_loop` are modified by this method. NrTri) draw_screenr(_alarmsheapqheappopmaxr@r!Zset_input_timeoutsZ get_inputr-rjr")r+Z next_alarmrlr>rmrA tie_breakr:rrrrhs:     zMainLoop._run_screen_event_loopcCsdS)aq >>> w = _refl("widget") >>> scr = _refl("screen") >>> scr.get_cols_rows_rval = (10, 5) >>> scr.get_input_rval = [], [] >>> ml = MainLoop(w, screen=scr) >>> def stop_now(loop, data): ... raise ExitMainLoop() >>> handle = ml.set_alarm_in(0, stop_now) >>> try: ... ml._run_screen_event_loop() ... except ExitMainLoop: ... pass screen.get_cols_rows() widget.render((10, 5), focus=True) screen.draw_screen((10, 5), None) screen.set_input_timeouts(0) screen.get_input(True) Nrr3rrr_test_run_screen_event_loopsz$MainLoop._test_run_screen_event_loopc Cs|js|j|_d}|D]}|dkr(qt|rh|\}}}}t|jdr|jj|j||||ddrd}n|jr|j|j|}|rt |t kr|j d}q|t | |O}qd}q|S)a This method will pass keyboard input and mouse events to :attr:`widget`. This method is called automatically from the :meth:`run` method when there is input, but may also be called to simulate input from the user. *keys* is a list of input returned from :attr:`screen`'s get_input() or get_input_nonblocking() methods. Returns ``True`` if any key was handled by a widget or the :meth:`unhandled_input` method. Fri mouse_eventTZfocusN)r"r! get_cols_rowsr r%r1ruZ selectableZkeypressr r clearboolr.)r+rlZsomething_handledkZeventZbuttoncolrowrrrrjs,         zMainLoop.process_inputcCsdS)a >>> w = _refl("widget") >>> w.selectable_rval = True >>> scr = _refl("screen") >>> scr.get_cols_rows_rval = (10, 5) >>> ml = MainLoop(w, [], scr) >>> ml.process_input(['enter', ('mouse drag', 1, 14, 20)]) screen.get_cols_rows() widget.selectable() widget.keypress((10, 5), 'enter') widget.mouse_event((10, 5), 'mouse drag', 1, 14, 20, focus=True) True Nrr3rrr_test_process_input szMainLoop._test_process_inputcCs|jr|||S|S)av This function is passed each all the input events and raw keystroke values. These values are passed to the *input_filter* function passed to the constructor. That function must return a list of keys to be passed to the widgets to handle. If no *input_filter* was defined this implementation will return all the input events. )r$rkrrrr-s zMainLoop.input_filtercCs|jr||SdS)a This function is called with any input that was not handled by the widgets, and calls the *unhandled_input* function passed to the constructor. If no *unhandled_input* was defined then the input will be ignored. *input* is the keyboard or mouse input. The *unhandled_input* function should return ``True`` if it handled the input. N)r#)r+inputrrrr.'s zMainLoop.unhandled_inputcCs|jjr|dS)z This method is called whenever the event loop is about to enter the idle state. :meth:`draw_screen` is called here to update the screen when anything has changed. N)r!startedrnr3rrrrb6szMainLoop.entering_idlecCs8|js|j|_|jj|jdd}|j|j|dS)a5 Render the widgets and paint the screen. This method is called automatically from :meth:`entering_idle`. If you modify the widgets displayed outside of handling input or responding to an alarm you will need to call this method yourself to repaint the screen. TrvN)r"r!rwr1Zrenderrn)r+Zcanvasrrrrn?s  zMainLoop.draw_screen)rNTNNNF)N)N) rrrrr/r2propertyr,r8rr?rBrCrUrXrTrJr\r]r^rfr_r[rgrhrtrjr}r-r.rbrnrrrrr;sB- #   + & 1'  rc@sPeZdZdZddZddZddZdd Zd d Zd d Z ddZ ddZ dS) EventLoopzT Abstract class representing an event loop to be used by :class:`MainLoop`. cCs tdS)aW Call callback() a given time from now. No parameters are passed to callback. This method has no default implementation. Returns a handle that may be passed to remove_alarm() seconds -- floating point time to wait before calling callback callback -- function to call from event loop Nr&r+secondsr:rrrr=Ts zEventLoop.alarmcCs tdS)z Add a callback for entering idle. This method has no default implementation. Returns a handle that may be passed to remove_idle() Nrr+r:rrrrabszEventLoop.enter_idlecCs tdS)z Remove an alarm. This method has no default implementation. Returns True if the alarm exists, False otherwise NrrDrrrrClszEventLoop.remove_alarmcCs tdS)z Remove an idle callback. This method has no default implementation. Returns True if the handle was removed. NrrDrrrrdvszEventLoop.remove_enter_idlecCs tdS)z Remove an input file. This method has no default implementation. Returns True if the input file exists, False otherwise NrrDrrrrJszEventLoop.remove_watch_filecCs tdS)z Start the event loop. Exit the loop when any callback raises an exception. If ExitMainLoop is raised, exit cleanly. This method has no default implementation. Nrr3rrrr\sz EventLoop.runcCs tdS)aV Call callback() when fd has some data to read. No parameters are passed to callback. This method has no default implementation. Returns a handle that may be passed to remove_watch_file() fd -- file descriptor to watch for input callback -- function to call when input is available NrrYrrrrTs zEventLoop.watch_filecCs t||S)a Sets the signal handler for signal signum. The default implementation of :meth:`set_signal_handler` is simply a proxy function that calls :func:`signal.signal()` and returns the resulting value. signum -- signal number handler -- function (taking signum as its single argument), or `signal.SIG_IGN`, or `signal.SIG_DFL` )signal)r+signumhandlerrrrr)s zEventLoop.set_signal_handlerN) rrrrr=rarCrdrJr\rTr)rrrrrOs     rc@s`eZdZdZddZddZddZdd Zd d Zd d Z ddZ ddZ ddZ ddZ dS)r'z3 Event loop based on :func:`select.select` cCs$g|_i|_d|_i|_t|_dSNr)ro _watch_files _idle_handle_idle_callbacksr _tie_breakr3rrrr/s zSelectEventLoop.__init__cCs.t|}|t|j|f}t|j||S# Call callback() a given time from now. No parameters are passed to callback. Returns a handle that may be passed to remove_alarm() seconds -- floating point time to wait before calling callback callback -- function to call from event loop )r@nextrrpheappushro)r+rr:rArErrrr=s zSelectEventLoop.alarmcCs8z|j|t|jWdSty2YdS0dS)] Remove an alarm. Returns True if the alarm exists, False otherwise TFN)roremoverpheapify ValueErrorrDrrrrCs    zSelectEventLoop.remove_alarmcCs||j|<|S" Call callback() when fd has some data to read. No parameters are passed to callback. Returns a handle that may be passed to remove_watch_file() fd -- file descriptor to watch for input callback -- function to call when input is available rrYrrrrTs zSelectEventLoop.watch_filecCs||jvr|j|=dSdSg Remove an input file. Returns True if the input file exists, False otherwise TFrrDrrrrJs z!SelectEventLoop.remove_watch_filecCs |jd7_||j|j<|jS)q Add a callback for entering idle. Returns a handle that may be passed to remove_idle() rrrrrrras zSelectEventLoop.enter_idlecCs&z |j|=Wnty YdS0dS[ Remove an idle callback. Returns True if the handle was removed. FTrrWrDrrrrds   z!SelectEventLoop.remove_enter_idlecCs|jD] }|q dS)z9 Call all the registered idle callbacks. N)rvaluesrrrr_entering_idleszSelectEventLoop._entering_idlec CshzPd|_z |WqtjyJ}z|jddkr6WYd}~qd}~00qWntybYn0dS) Start the event loop. Exit the loop when any callback raises an exception. If ExitMainLoop is raised, exit cleanly. TrN)_did_something_loopselecterrorargsr)r+errrr\ s  zSelectEventLoop.runc Cst|j}|js|jrz|jr@|jdd}td|t}|jrb|jrZ|jrb|dkrbd}d}t|g||\}}}nd}t|g|\}}}|s|dkr|d|_n&|durt |j\}}}|d|_|D]} |j| d|_qdS)z6 A single iteration of the event loop rZidleNFT) listrrlrorrrr@rrrprq) r+ZfdsrAtimeoutZreadywerrrsZalarm_callbackrZrrrrs4   zSelectEventLoop._loopN)rrrrr/r=rCrTrJrardrr\rrrrrr's     r'c@speZdZdZddZddZddZdd Zd d Zd d Z ddZ ddZ ddZ ddZ ddZddZdS) GLibEventLoopz+ Event loop based on GLib.MainLoop cCsRddlm}||_g|_i|_d|_d|_i|_||_d|_ | i|_ dS)Nr)GLibF) Z gi.repositoryrrorr_glib_idle_enabledrrr _exc_info_enable_glib_idle_signal_handlers)r+rrrrr/Cs  zGLibEventLoop.__init__cs>jfdd}jt|d|}j||fS)rcsdSrFrrr:r+rr ret_falseZsz&GLibEventLoop.alarm..ret_falsei) handle_exitrZ timeout_addintroappend)r+rr:rrZrrrr=Ps  zGLibEventLoop.alarmcstjtjtjtjtjg}jddds4|tj ||vr@dS|j vr^j j |tj krrddntjkrdSfdd}jjj|||}|j |<dS) a Sets the signal handler for signal signum. .. 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Returns None in all cases (unlike :func:`signal.signal()`). .. signum -- signal number handler -- function (taking signum as its single argument), or `signal.SIG_IGN`, or `signal.SIG_DFL` 6rNcSsdSr0r)xrrrr4r5z2GLibEventLoop.set_signal_handler..cs|jjSr0)rZSOURCE_CONTINUE)Z signal_numberrr+rr final_handlersz7GLibEventLoop.set_signal_handler..final_handler)rSIGHUPSIGINTSIGTERMSIGUSR1SIGUSR2rZ check_versionrSIGWINCHr source_removerVSIG_IGNSIG_DFLZunix_signal_addZPRIORITY_DEFAULT)r+rrZ glib_signalsrsourcerrrr)cs&      z GLibEventLoop.set_signal_handlercCs@z&|j|d|j|dWdSty:YdS0dS)rrTFN)rorrrrrDrrrrCs  zGLibEventLoop.remove_alarmcs2jfdd}j|jj|j|<|S)rcsdSNTr)rZ cb_conditionrrr io_callbacksz-GLibEventLoop.watch_file..io_callback)rrZ io_add_watchZIO_INr)r+rZr:rrrrrTs zGLibEventLoop.watch_filecCs,||jvr(|j|j||j|=dSdSr)rrrrDrrrrJs  zGLibEventLoop.remove_watch_filecCs |jd7_||j|j<|jSzw Add a callback for entering idle. 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