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annotate cagou/core/platform_/base.py @ 435:53bb3886b408

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chat: generate preview if there is not one already for non encrypted attachments
author Goffi <goffi@goffi.org>
date Sun, 01 Mar 2020 22:11:25 +0100
parents ddca5a837029
children 2cfb9f7a6b62
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1 #!/usr/bin/env python3
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2
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3 # Cagou: desktop/mobile frontend for Salut à Toi XMPP client
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4 # Copyright (C) 2016-2020 Jérôme Poisson (goffi@goffi.org)
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5
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6 # This program is free software: you can redistribute it and/or modify
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7 # it under the terms of the GNU Affero General Public License as published by
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8 # the Free Software Foundation, either version 3 of the License, or
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9 # (at your option) any later version.
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10
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU Affero General Public License for more details.
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15
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16 # You should have received a copy of the GNU Affero General Public License
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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18
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19 import sys
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20 import webbrowser
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21 import subprocess
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22 import shutil
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23 from urllib import parse
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24 from kivy.config import Config as KivyConfig
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25 from sat.core.i18n import _
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26 from sat.core.log import getLogger
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27 from sat.core import exceptions
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28 from sat_frontends.quick_frontend.quick_widgets import QuickWidget
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29 from cagou import G
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30
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31
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32 log = getLogger(__name__)
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33
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34
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35 class Platform:
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36 """Base class to handle platform specific behaviours"""
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37 # set to True to always show the send button in chat
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38 send_button_visible = False
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39
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40 def init_platform(self):
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41 # we don't want multi-touch emulation with mouse
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42
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43 # this option doesn't make sense on Android and cause troubles, so we only
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44 # activate it for other platforms (cf. https://github.com/kivy/kivy/issues/6229)
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45 KivyConfig.set('input', 'mouse', 'mouse,disable_multitouch')
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46
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47 def on_app_build(self, Wid):
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48 pass
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49
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50 def on_host_init(self, host):
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51 pass
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52
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53 def on_initFrontendState(self):
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54 pass
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55
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56 def do_postInit(self):
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57 return True
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58
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59 def on_pause(self):
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60 pass
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61
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62 def on_resume(self):
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63 pass
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64
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65 def on_stop(self):
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66 pass
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67
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68 def on_key_back_root(self):
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69 """Back key is called while being on root widget"""
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70 return True
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71
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72 def on_key_back_share(self, share_widget):
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73 """Back key is called while being on share widget"""
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74 share_widget.close()
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75 return True
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76
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77 def _on_new_window(self):
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78 """Launch a new instance of Cagou to have an extra window"""
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79 subprocess.Popen(sys.argv)
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80
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81 def on_extra_menu_init(self, extra_menu):
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82 extra_menu.addItem(_('new window'), self._on_new_window)
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83
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84 def updateParamsExtra(self, extra):
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85 pass
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86
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87 def check_plugin_permissions(self, plug_info, callback, errback):
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88 """Check that plugin permissions for this platform are granted"""
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89 callback()
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90
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91 def _open(self, path):
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92 """Open url or path with appropriate application if possible"""
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93 try:
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94 opener = self._opener
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95 except AttributeError:
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96 xdg_open_path = shutil.which("xdg-open")
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97 if xdg_open_path is not None:
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98 log.debug("xdg-open found, it will be used to open files")
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99 opener = lambda path: subprocess.Popen([xdg_open_path, path])
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100 else:
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101 log.debug("files will be opened with webbrower.open")
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102 opener = webbrowser.open
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103 self._opener = opener
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104
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105 opener(path)
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106
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107
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108 def open_url(self, url, wid=None):
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109 """Open an URL in the way appropriate for the platform
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110
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111 @param url(str): URL to open
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112 @param wid(CagouWidget, None): widget requesting the opening
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113 it may influence the way the URL is opened
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114 """
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115 parsed_url = parse.urlparse(url)
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116 if parsed_url.scheme == "aesgcm" and wid is not None:
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117 # aesgcm files need to be decrypted first
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118 # so we download them before opening
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119 quick_widget = G.host.getAncestorWidget(wid, QuickWidget)
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120 if quick_widget is None:
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121 msg = f"Can't find ancestor QuickWidget of {wid}"
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122 log.error(msg)
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123 G.host.errback(exceptions.InternalError(msg))
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124 return
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125 G.host.downloadURL(
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126 parsed_url, self._open, G.host.errback, profile=quick_widget.profile
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127 )
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128 else:
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129 self._open(url)