Mercurial > libervia-desktop-kivy

annotate cagou/core/behaviors.py @ 439:12d188cb1206

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core: use of new profileConnected method: bookmarks cache is now retrieved in profileConnected, as getting it in ProfilePlugged could result in an exception is client was not fully connected (if plugins were not all initialised).
author Goffi <goffi@goffi.org>
date Sat, 07 Mar 2020 00:05:49 +0100
parents f7476818f9fb
children 3c9ba4a694ef
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1 #!/usr/bin/env python3
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2
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3
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4 # Cagou: desktop/mobile frontend for Salut à Toi XMPP client
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5 # Copyright (C) 2016-2020 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20
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21 from kivy import properties
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22 from kivy.animation import Animation
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23 from kivy.clock import Clock
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24 from kivy_garden import modernmenu
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25 from functools import partial
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27
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28 class TouchMenu(modernmenu.ModernMenu):
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29 pass
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31
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32 class TouchMenuItemBehavior:
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33 """Class to use on every item where a menu may appear
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34
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35 main_wid attribute must be set to the class inheriting from TouchMenuBehavior
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36 do_item_action is the method called on simple click
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37 getMenuChoices must return a list of menus for long press
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38 menus there are dict as expected by ModernMenu
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39 (translated text, index and callback)
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40 """
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41 main_wid = properties.ObjectProperty()
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42 click_timeout = properties.NumericProperty(0.4)
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43
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44 def on_touch_down(self, touch):
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45 if not self.collide_point(*touch.pos):
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46 return
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47 t = partial(self.open_menu, touch)
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48 touch.ud['menu_timeout'] = t
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49 Clock.schedule_once(t, self.click_timeout)
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50 return super(TouchMenuItemBehavior, self).on_touch_down(touch)
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51
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52 def do_item_action(self, touch):
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53 pass
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54
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55 def on_touch_up(self, touch):
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56 if touch.ud.get('menu_timeout'):
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57 Clock.unschedule(touch.ud['menu_timeout'])
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58 if self.collide_point(*touch.pos) and self.main_wid.menu is None:
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59 self.do_item_action(touch)
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60 return super(TouchMenuItemBehavior, self).on_touch_up(touch)
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61
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62 def open_menu(self, touch, dt):
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63 self.main_wid.open_menu(self, touch)
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64 del touch.ud['menu_timeout']
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65
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66 def getMenuChoices(self):
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67 """return choice adapted to selected item
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68
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69 @return (list[dict]): choices ad expected by ModernMenu
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70 """
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71 return []
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72
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73
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74 class TouchMenuBehavior:
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75 """Class to handle a menu appearing on long press on items
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76
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77 classes using this behaviour need to have a float_layout property
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78 pointing the main FloatLayout.
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79 """
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80 float_layout = properties.ObjectProperty()
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81
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82 def __init__(self, *args, **kwargs):
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83 super(TouchMenuBehavior, self).__init__(*args, **kwargs)
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84 self.menu = None
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85 self.menu_item = None
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86
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87 ## menu methods ##
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88
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89 def clean_fl_children(self, layout, children):
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90 """insure that self.menu and self.menu_item are None when menu is dimissed"""
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91 if self.menu is not None and self.menu not in children:
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92 self.menu = self.menu_item = None
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93
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94 def clear_menu(self):
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95 """remove menu if there is one"""
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96 if self.menu is not None:
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97 self.menu.dismiss()
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98 self.menu = None
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99 self.menu_item = None
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100
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101 def open_menu(self, item, touch):
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102 """open menu for item
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103
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104 @param item(PathWidget): item when the menu has been requested
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105 @param touch(kivy.input.MotionEvent): touch data
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106 """
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107 if self.menu_item == item:
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108 return
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109 self.clear_menu()
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110 pos = self.to_widget(*touch.pos)
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111 choices = item.getMenuChoices()
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112 if not choices:
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113 return
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114 self.menu = TouchMenu(choices=choices,
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115 center=pos,
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116 size_hint=(None, None))
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117 self.float_layout.add_widget(self.menu)
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118 self.menu.start_display(touch)
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119 self.menu_item = item
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120
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121 def on_float_layout(self, wid, float_layout):
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122 float_layout.bind(children=self.clean_fl_children)
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123
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124
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125 class FilterBehavior(object):
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126 """class to handle items filtering with animation"""
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127
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128 def __init__(self, *args, **kwargs):
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129 super(FilterBehavior, self).__init__(*args, **kwargs)
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130 self._filter_last = {}
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131 self._filter_anim = Animation(width = 0,
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132 height = 0,
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133 opacity = 0,
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134 d = 0.5)
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135
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136 def do_filter(self, parent, text, get_child_text, width_cb, height_cb,
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137 continue_tests=None):
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138 """filter the children
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139
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140 filtered children will have a animation to set width, height and opacity to 0
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141 @param parent(kivy.uix.widget.Widget): parent layout of the widgets to filter
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142 @param text(unicode): filter text (if this text is not present in a child,
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143 the child is filtered out)
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144 @param get_child_text(callable): must retrieve child text
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145 child is used as sole argument
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146 @param width_cb(callable, int, None): method to retrieve width when opened
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147 child is used as sole argument, int can be used instead of callable
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148 @param height_cb(callable, int, None): method to retrieve height when opened
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149 child is used as sole argument, int can be used instead of callable
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150 @param continue_tests(list[callable]): list of test to skip the item
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151 all callables take child as sole argument.
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152 if any of the callable return True, the child is skipped (i.e. not filtered)
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153 """
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154 text = text.strip().lower()
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155 filtering = len(text)>len(self._filter_last.get(parent, ''))
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156 self._filter_last[parent] = text
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157 for child in parent.children:
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158 if continue_tests is not None and any((t(child) for t in continue_tests)):
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159 continue
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160 if text in get_child_text(child).lower():
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161 self._filter_anim.cancel(child)
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162 for key, method in (('width', width_cb),
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163 ('height', height_cb),
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164 ('opacity', lambda c: 1)):
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165 try:
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166 setattr(child, key, method(child))
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167 except TypeError:
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168 # method is not a callable, must be an int
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169 setattr(child, key, method)
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170 elif (filtering
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171 and child.opacity > 0
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172 and not self._filter_anim.have_properties_to_animate(child)):
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173 self._filter_anim.start(child)