Mercurial > libervia-web
annotate libervia/pages/_browser/slideshow.py @ 1316:d0575e9abf7d
pages (files/list): use new `FISAffiliationsGet` to get `directory_affiliation`
author | Goffi <goffi@goffi.org> |
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date | Sat, 01 Aug 2020 16:47:24 +0200 |
parents | 39a87d9099c4 |
children | 0cbf86b1dcca |
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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 |
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18 @property |
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19 def current_slide(self): |
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20 if self.swiper is None: |
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21 return None |
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22 try: |
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23 return DOMNode(self.swiper.slides[self.swiper.realIndex]) |
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24 # getting missing item in JS arrays returns KeyError |
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25 except KeyError: |
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26 return None |
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27 |
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28 @property |
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29 def current_item(self): |
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30 """item attached to the current slide, if any""" |
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31 current = self.current_slide |
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32 if current is None: |
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33 return |
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34 try: |
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35 return current.js._item |
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36 except AttributeError: |
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37 return None |
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38 |
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39 @property |
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40 def index(self): |
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41 if self.swiper is None: |
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42 return None |
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43 return self.swiper.realIndex |
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44 |
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45 @index.setter |
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46 def index(self, idx): |
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47 if self.swiper is not None: |
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48 self.swiper.slideTo(idx, 0) |
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49 |
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50 def attach(self): |
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51 # we hide other elts to avoid scrolling issues |
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52 for elt in document.body.children: |
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53 self.hidden_elts[elt] = elt.style.display |
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54 elt.style.display = "none" |
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55 document.body <= self.slideshow_elt |
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56 self.swiper = Swiper.new( |
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57 ".swiper-container", |
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58 { |
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59 "pagination": { |
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60 "el": ".swiper-pagination", |
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61 }, |
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62 "navigation": { |
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63 "nextEl": ".swiper-button-next", |
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64 "prevEl": ".swiper-button-prev", |
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65 }, |
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66 "scrollbar": { |
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67 "el": ".swiper-scrollbar", |
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68 }, |
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69 "grabCursor": True, |
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70 "keyboard": { |
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71 "enabled": True, |
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72 "onlyInViewport": False, |
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73 }, |
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74 "mousewheel": True, |
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75 "zoom": { |
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76 "maxRatio": 15, |
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77 "toggle": False, |
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78 }, |
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79 } |
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80 ) |
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81 window.addEventListener("keydown", self.on_key_down, True) |
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82 self.slideshow_elt.select_one(".click_to_close").bind("click", self.on_close) |
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83 self.slideshow_elt.select_one(".click_to_comment").bind("click", self.on_comment) |
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84 self.swiper.on("slideChange", self.on_slide_change) |
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85 self.swiper.on("click", self.on_click) |
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86 self.swiper.on("doubleTap", self.on_double_tap) |
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87 self.on_slide_change() |
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88 self.fullscreen(True) |
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89 |
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90 def add_slide(self, elt, item_data=None): |
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91 slide_elt = html.DIV(Class="swiper-slide") |
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92 zoom_cont_elt = html.DIV(Class="swiper-zoom-container") |
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93 slide_elt <= zoom_cont_elt |
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94 zoom_cont_elt <= elt |
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95 slide_elt._item = item_data |
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96 self.swiper.appendSlide([slide_elt]) |
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97 self.swiper.update() |
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98 |
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99 def quit(self): |
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100 # we unhide |
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101 for elt, display in self.hidden_elts.items(): |
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102 elt.style.display = display |
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103 self.hidden_elts.clear() |
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104 self.slideshow_elt.remove() |
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105 self.slideshow_elt = None |
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106 self.swiper.destroy(True, True) |
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107 self.swiper = None |
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108 |
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109 def fullscreen(self, active=None): |
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110 """Activate/desactivate fullscreen |
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111 |
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112 @param acvite: can be: |
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113 - True to activate |
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114 - False to desactivate |
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115 - Auto to switch fullscreen mode |
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116 """ |
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117 try: |
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118 fullscreen_elt = document.fullscreenElement |
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119 request_fullscreen = self.slideshow_elt.requestFullscreen |
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120 except AttributeError: |
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121 print("fullscreen is not available on this browser") |
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122 else: |
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123 if active is None: |
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124 active = fullscreen_elt != None |
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125 if active: |
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126 request_fullscreen() |
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127 else: |
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128 try: |
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129 document.exitFullscreen() |
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130 except AttributeError: |
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131 print("exitFullscreen not available on this browser") |
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132 |
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133 def on_key_down(self, evt): |
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134 if evt.key == 'Escape': |
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135 self.quit() |
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136 else: |
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137 return |
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138 evt.preventDefault() |
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139 |
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140 def on_slide_change(self): |
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141 item = self.current_item |
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142 if item is None: |
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143 return |
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144 comments_count = item.get('comments_count') |
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145 self.comments_count_elt.text = comments_count or '' |
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146 |
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147 def toggle_hide_controls(self, evt): |
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148 self.click_timer = None |
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149 if 'click_to_hide' in evt.target.classList: |
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150 # we don't want to hide controls when a control is clicked |
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151 return |
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152 for elt in self.slideshow_elt.select('.click_to_hide'): |
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153 elt.style.display = '' if self.control_hidden else 'none' |
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154 self.control_hidden = not self.control_hidden |
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155 |
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156 def on_click(self, evt): |
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157 # we use a timer so double tap can cancel the click |
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158 # this avoid double tap side effect |
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159 if self.click_timer is None: |
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160 self.click_timer = timer.set_timeout( |
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161 lambda: self.toggle_hide_controls(evt), 300) |
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162 |
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163 def on_double_tap(self, evt): |
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164 evt.stopPropagation() |
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165 evt.preventDefault() |
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166 if self.click_timer is not None: |
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167 timer.clear_timeout(self.click_timer) |
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168 self.click_timer = None |
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169 if self.swiper.zoom.scale != 1: |
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170 self.swiper.zoom.toggle() |
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171 else: |
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172 # "in" is reserved in Python, so we call it using dict syntax |
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173 self.swiper.zoom["in"]() |
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174 |
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175 def on_close(self, evt): |
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176 evt.stopPropagation() |
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177 evt.preventDefault() |
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178 self.quit() |
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179 |
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180 def on_comment_close(self, evt): |
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181 side_panel = self.comments_panel_elt.select_one('.comments_side_panel') |
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182 side_panel.classList.remove('open') |
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183 side_panel.bind("transitionend", lambda evt: self.comments_panel_elt.remove()) |
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184 |
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185 def on_comments_panel_click(self, evt): |
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186 # we stop stop propagation to avoid the closing of the panel |
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187 evt.stopPropagation() |
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188 |
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189 def on_comment(self, evt): |
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190 item = self.current_item |
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191 if item is None: |
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192 return |
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193 comments_panel_tpl = Template('blog/comments_panel.html') |
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194 try: |
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195 comments = item['comments']['items'] |
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196 except KeyError: |
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197 comments = [] |
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198 self.comments_panel_elt = comments_panel_tpl.get_elt({ |
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199 "comments": comments, |
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200 "comments_service": item['comments_service'], |
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201 "comments_node": item['comments_node'], |
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202 |
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203 }) |
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204 self.slideshow_elt <= self.comments_panel_elt |
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205 side_panel = self.comments_panel_elt.select_one('.comments_side_panel') |
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206 timer.set_timeout(lambda: side_panel.classList.add("open"), 0) |
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207 for close_elt in self.comments_panel_elt.select('.click_to_close'): |
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208 close_elt.bind("click", self.on_comment_close) |
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209 side_panel.bind("click", self.on_comments_panel_click) |