Mercurial > libervia-web
annotate libervia/pages/_browser/slideshow.py @ 1453:d62df81440c6
pages (lists/view): fix serialisation of `extra` when calling `listGet`
author | Goffi <goffi@goffi.org> |
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date | Wed, 08 Sep 2021 12:08:00 +0200 |
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1 from browser import document, window, html, timer, DOMNode |
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2 from js_modules.swiper import Swiper |
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3 from template import Template |
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4 |
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5 |
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6 class SlideShow: |
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7 |
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8 def __init__(self): |
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9 self.swiper = None |
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10 slideshow_tpl = Template('photo/slideshow.html') |
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11 self.slideshow_elt = slideshow_tpl.get_elt() |
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12 self.comments_count_elt = self.slideshow_elt.select_one('.comments__count') |
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13 self.wrapper = self.slideshow_elt.select_one(".swiper-wrapper") |
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14 self.hidden_elts = {} |
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15 self.control_hidden = False |
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16 self.click_timer = None |
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17 self._class_to_remove = set() |
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18 self._exit_callback = None |
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19 |
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20 @property |
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21 def current_slide(self): |
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22 if self.swiper is None: |
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23 return None |
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24 try: |
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25 return DOMNode(self.swiper.slides[self.swiper.realIndex]) |
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26 # getting missing item in JS arrays returns KeyError |
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27 except KeyError: |
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28 return None |
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29 |
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30 @property |
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31 def current_item(self): |
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32 """item attached to the current slide, if any""" |
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33 current = self.current_slide |
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34 if current is None: |
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35 return None |
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36 try: |
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37 return current._item |
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38 except AttributeError: |
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39 return None |
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40 |
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41 @property |
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42 def current_options(self): |
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43 """options attached to the current slide, if any""" |
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44 current = self.current_slide |
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45 if current is None: |
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46 return None |
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47 try: |
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48 return current._options |
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49 except AttributeError: |
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50 return None |
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51 |
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52 @property |
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53 def index(self): |
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54 if self.swiper is None: |
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55 return None |
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56 return self.swiper.realIndex |
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57 |
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58 @index.setter |
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59 def index(self, idx): |
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60 if self.swiper is not None: |
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61 self.swiper.slideTo(idx, 0) |
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62 |
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63 def attach(self): |
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64 # we hide other elts to avoid scrolling issues |
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65 for elt in document.body.children: |
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66 try: |
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67 self.hidden_elts[elt] = elt.style.display |
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68 except AttributeError: |
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69 pass |
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70 # FIXME: this is a workaround needed because Brython's children method |
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71 # is returning all nodes, |
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72 # cf. https://github.com/brython-dev/brython/issues/1657 |
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73 # to be removed when Brython is fixed. |
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74 else: |
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75 elt.style.display = "none" |
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76 document.body <= self.slideshow_elt |
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77 self.swiper = Swiper.new( |
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78 ".swiper-container", |
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79 { |
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80 # default 0 value results in lot of accidental swipes, notably when media |
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81 # player is used |
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82 "threshold": 10, |
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83 "pagination": { |
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84 "el": ".swiper-pagination", |
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85 }, |
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86 "navigation": { |
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87 "nextEl": ".swiper-button-next", |
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88 "prevEl": ".swiper-button-prev", |
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89 }, |
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90 "scrollbar": { |
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91 "el": ".swiper-scrollbar", |
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92 }, |
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93 "grabCursor": True, |
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94 "keyboard": { |
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95 "enabled": True, |
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96 "onlyInViewport": False, |
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97 }, |
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98 "mousewheel": True, |
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99 "zoom": { |
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100 "maxRatio": 15, |
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101 "toggle": False, |
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102 }, |
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103 } |
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104 ) |
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105 window.addEventListener("keydown", self.on_key_down, True) |
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106 self.slideshow_elt.select_one(".click_to_close").bind("click", self.on_close) |
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107 self.slideshow_elt.select_one(".click_to_comment").bind("click", self.on_comment) |
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108 |
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109 # we don't use swiper.on for "click" and "dblclick" (or "doubleTap" in swiper |
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110 # terms) because it breaks event propagation management, which cause trouble with |
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111 # media player |
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112 self.slideshow_elt.bind("click", self.on_click) |
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113 self.slideshow_elt.bind("dblclick", self.on_dblclick) |
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114 self.swiper.on("slideChange", self.on_slide_change) |
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115 self.on_slide_change(self.swiper) |
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116 self.fullscreen(True) |
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117 |
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118 def add_slide(self, elt, item_data=None, options=None): |
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119 slide_elt = html.DIV(Class="swiper-slide") |
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120 zoom_cont_elt = html.DIV(Class="swiper-zoom-container") |
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121 slide_elt <= zoom_cont_elt |
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122 zoom_cont_elt <= elt |
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123 slide_elt._item = item_data |
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124 if options is not None: |
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125 slide_elt._options = options |
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126 self.swiper.appendSlide([slide_elt]) |
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127 self.swiper.update() |
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128 |
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129 def quit(self): |
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130 # we unhide |
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131 for elt, display in self.hidden_elts.items(): |
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132 elt.style.display = display |
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133 self.hidden_elts.clear() |
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134 self.slideshow_elt.remove() |
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135 self.slideshow_elt = None |
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136 self.swiper.destroy(True, True) |
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137 self.swiper = None |
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138 |
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139 def fullscreen(self, active=None): |
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140 """Activate/desactivate fullscreen |
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141 |
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142 @param acvite: can be: |
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143 - True to activate |
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144 - False to desactivate |
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145 - Auto to switch fullscreen mode |
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146 """ |
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147 try: |
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148 fullscreen_elt = document.fullscreenElement |
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149 request_fullscreen = self.slideshow_elt.requestFullscreen |
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150 except AttributeError: |
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151 print("fullscreen is not available on this browser") |
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152 else: |
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153 if active is None: |
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154 active = fullscreen_elt == None |
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155 if active: |
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156 request_fullscreen() |
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157 else: |
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158 try: |
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159 document.exitFullscreen() |
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160 except AttributeError: |
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161 print("exitFullscreen not available on this browser") |
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162 |
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163 def on_key_down(self, evt): |
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164 if evt.key == 'Escape': |
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165 self.quit() |
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166 else: |
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167 return |
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168 evt.preventDefault() |
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169 |
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170 def on_slide_change(self, swiper): |
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171 if self._exit_callback is not None: |
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172 self._exit_callback() |
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173 self._exit_callback = None |
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174 item = self.current_item |
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175 if item is not None: |
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176 comments_count = item.get('comments_count') |
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177 self.comments_count_elt.text = comments_count or '' |
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178 |
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179 for cls in self._class_to_remove: |
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180 self.slideshow_elt.classList.remove(cls) |
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181 |
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182 self._class_to_remove.clear() |
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183 |
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184 options = self.current_options |
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185 if options is not None: |
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186 for flag in options.get('flags', []): |
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187 cls = f"flag_{flag.lower()}" |
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188 self.slideshow_elt.classList.add(cls) |
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189 self._class_to_remove.add(cls) |
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190 self._exit_callback = options.get("exit_callback", None) |
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191 |
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192 def toggle_hide_controls(self, evt): |
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193 self.click_timer = None |
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194 # we don't want to hide controls when a control is clicked |
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195 # so we check all ancestors if we are not in a control |
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196 current = evt.target |
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197 while current and current != self.slideshow_elt: |
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198 print(f"current: {current}") |
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199 if 'slideshow_control' in current.classList: |
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200 return |
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201 current = current.parent |
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202 for elt in self.slideshow_elt.select('.slideshow_control'): |
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203 elt.style.display = '' if self.control_hidden else 'none' |
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204 self.control_hidden = not self.control_hidden |
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205 |
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206 def on_click(self, evt): |
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207 evt.stopPropagation() |
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208 evt.preventDefault() |
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209 # we use a timer so double tap can cancel the click |
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210 # this avoid double tap side effect |
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211 if self.click_timer is None: |
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212 self.click_timer = timer.set_timeout( |
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213 lambda: self.toggle_hide_controls(evt), 300) |
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214 |
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215 def on_dblclick(self, evt): |
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216 evt.stopPropagation() |
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217 evt.preventDefault() |
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218 if self.click_timer is not None: |
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219 timer.clear_timeout(self.click_timer) |
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220 self.click_timer = None |
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221 if self.swiper.zoom.scale != 1: |
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222 self.swiper.zoom.toggle() |
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223 else: |
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224 # "in" is reserved in Python, so we call it using dict syntax |
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225 self.swiper.zoom["in"]() |
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226 |
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227 def on_close(self, evt): |
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228 evt.stopPropagation() |
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229 evt.preventDefault() |
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230 self.quit() |
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231 |
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232 def on_comment_close(self, evt): |
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233 evt.stopPropagation() |
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234 side_panel = self.comments_panel_elt.select_one('.comments_side_panel') |
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235 side_panel.classList.remove('open') |
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236 side_panel.bind("transitionend", lambda evt: self.comments_panel_elt.remove()) |
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237 |
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238 def on_comments_panel_click(self, evt): |
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239 # we stop stop propagation to avoid the closing of the panel |
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240 evt.stopPropagation() |
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241 |
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242 def on_comment(self, evt): |
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243 item = self.current_item |
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244 if item is None: |
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245 return |
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246 comments_panel_tpl = Template('blog/comments_panel.html') |
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247 try: |
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248 comments = item['comments']['items'] |
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249 except KeyError: |
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250 comments = [] |
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251 self.comments_panel_elt = comments_panel_tpl.get_elt({ |
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252 "comments": comments, |
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253 "comments_service": item['comments_service'], |
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254 "comments_node": item['comments_node'], |
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255 |
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256 }) |
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257 self.slideshow_elt <= self.comments_panel_elt |
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258 side_panel = self.comments_panel_elt.select_one('.comments_side_panel') |
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259 timer.set_timeout(lambda: side_panel.classList.add("open"), 0) |
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260 for close_elt in self.comments_panel_elt.select('.click_to_close'): |
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261 close_elt.bind("click", self.on_comment_close) |
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262 side_panel.bind("click", self.on_comments_panel_click) |