3965 - get rid of the teardown() function - mu - Soul of a tiny new machine. More thorough tests → More comprehensible and rewrite-friendly software → More resilient society.

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author	Kartik K. Agaram <vc@akkartik.com>	2017-07-09 14:25:48 -0700
committer	Kartik K. Agaram <vc@akkartik.com>	2017-07-09 14:25:48 -0700
commit	6573fe1f1aa6d87c027d10429ded7e0162e52902 (patch)
tree	ddd110af3e987e49bb60ba05c16833c92d6d8901 /html/030container.cc.html
parent	6ff9413c5dc624df6a33d7680a6667c27cd9352e (diff)
download	mu-6573fe1f1aa6d87c027d10429ded7e0162e52902.tar.gz

3965 - get rid of the teardown() function

Instead of setup() and teardown() we'll just use a reset() function from
now on, which will bring the machine back to a good state before each
test or run, and also before exit (to avoid memory leaks).

Diffstat (limited to 'html/030container.cc.html')

0 files changed, 0 insertions, 0 deletions

# Copyright (C) 2009, 2010 Roman Zimbelmann <romanz@lavabit.com> # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. import os import socket import sys import curses import _curses from .displayable import DisplayableContainer from ranger.container.keymap import CommandArgs from .mouse_event import MouseEvent TERMINALS_WITH_TITLE = ("xterm", "xterm-256color", "rxvt", "rxvt-256color", "rxvt-unicode", "aterm", "Eterm", "screen", "screen-256color") class UI(DisplayableContainer): is_set_up = False mousemask = curses.ALL_MOUSE_EVENTS | curses.REPORT_MOUSE_POSITION load_mode = False def __init__(self, keymap=None, env=None, fm=None): self._draw_title = os.environ["TERM"] in TERMINALS_WITH_TITLE os.environ['ESCDELAY'] = '25' # don't know a cleaner way if env is not None: self.env = env if fm is not None: self.fm = fm if keymap is None: self.keymap = self.settings.keys.browser_keys() else: self.keymap = keymap self.win = curses.initscr() self.env.keybuffer.assign(self.keymap, self.settings.keys.directions) self.env.keybuffer.clear() DisplayableContainer.__init__(self, None) def initialize(self): """initialize curses, then call setup (at the first time) and resize.""" self.win.leaveok(0) self.win.keypad(1) self.load_mode = False curses.cbreak() curses.noecho() curses.halfdelay(20) try: curses.curs_set(int(bool(self.settings.show_cursor))) except: pass curses.start_color() curses.use_default_colors() curses.mousemask(self.mousemask) curses.mouseinterval(0) ## this line solves this problem: ## If an action, following a mouse click, includes the ## suspension and re-initializion of the ui (e.g. running a ## file by clicking on its preview) and the next key is another ## mouse click, the bstate of this mouse event will be invalid. ## (atm, invalid bstates are recognized as scroll-down) curses.ungetmouse(0,0,0,0,0) if not self.is_set_up: self.is_set_up = True self.setup() self.update_size() def suspend(self): """Turn off curses""" # from ranger import log # log("suspending ui!") self.win.keypad(0) curses.nocbreak() curses.echo() try: curses.curs_set(1) except: pass curses.mousemask(0) curses.endwin() def set_load_mode(self, boolean): boolean = bool(boolean) if boolean != self.load_mode: self.load_mode = boolean if boolean: # don't wait for key presses in the load mode curses.cbreak() self.win.nodelay(1) else: self.win.nodelay(0) curses.halfdelay(20) def destroy(self): """Destroy all widgets and turn off curses""" DisplayableContainer.destroy(self) self.suspend() def handle_mouse(self): """Handles mouse input""" try: event = MouseEvent(curses.getmouse()) except _curses.error: return # from ranger import log # log('{0:0>28b} ({0})'.format(event.bstate)) # log('y: {0} x: {1}'.format(event.y, event.x)) DisplayableContainer.click(self, event) def handle_key(self, key): """Handles key input""" if hasattr(self, 'hint'): self.hint() self.env.key_append(key) if DisplayableContainer.press(self, key): return kbuf = self.env.keybuffer cmd = kbuf.command self.fm.hide_bookmarks() if kbuf.failure: kbuf.clear() return elif not cmd: return self.env.cmd = cmd if cmd.function: try: cmd.function(CommandArgs.from_widget(self)) except Exception as error: self.fm.notify(error) if kbuf.done: kbuf.clear() else: kbuf.clear() def get_next_key(self): """Waits for key input and returns the pressed key""" key = self.win.getch() if key is not -1: if self.settings.flushinput: curses.flushinp() return key def setup(self): """ Called after an initialize() call. Override this! """ def redraw(self): """Redraw all widgets""" self.poke() self.draw() self.finalize() def redraw_window(self): """Redraw the window. This only calls self.win.redrawwin().""" self.win.erase() self.win.redrawwin() self.win.refresh() self.win.redrawwin() self.need_redraw = True def update_size(self): """ Update self.env.termsize. Extend this method to resize all widgets! """ self.env.termsize = self.win.getmaxyx() def draw(self): """Erase the window, then draw all objects in the container""" self.win.touchwin() DisplayableContainer.draw(self) if self._draw_title and self.settings.update_title: cwd = self.fm.env.cwd.path if cwd.startswith(self.env.home_path): cwd = '~' + cwd[len(self.env.home_path):] if self.settings.shorten_title: split = cwd.rsplit(os.sep, self.settings.shorten_title) if os.sep in split[0]: cwd = os.sep.join(split[1:]) sys.stdout.write("\033]2;ranger:" + cwd + "\007") self.win.refresh() def finalize(self): """Finalize every object in container and refresh the window""" DisplayableContainer.finalize(self) self.win.refresh()


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