annotate libervia/pages/_browser/template.py @ 1302:04e7dd6b6f4d

pages (blog, tickets, merge-requests): updated code to handle new serialisation, following backend changes
author Goffi <goffi@goffi.org>
date Thu, 16 Jul 2020 09:08:47 +0200
parents 8aba2a2078ca
children c07112ef01cd
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1 """Integrate templating system using nunjucks"""
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2
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3 from js_modules.nunjucks import nunjucks
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4 from browser import window, document
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5 import javascript
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6
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7
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8 safe = nunjucks.runtime.SafeString.new
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9 env = nunjucks.configure(
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10 window.templates_root_url,
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11 {
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12 'autoescape': True,
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13 'trimBlocks': True,
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14 'lstripBlocks': True,
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15 })
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16
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17 nunjucks.installJinjaCompat()
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18
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19
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20 class Indexer:
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21 """Index global to a page"""
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22
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23 def __init__(self):
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24 self._indexes = {}
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25
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26 def next(self, value):
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27 if value not in self._indexes:
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28 self._indexes[value] = 0
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29 return 0
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30 self._indexes[value] += 1
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31 return self._indexes[value]
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32
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33 def current(self, value):
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34 return self._indexes.get(value)
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35
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36
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37 gidx = Indexer()
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38 # suffix use to avoid collision with IDs generated in static page
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39 SCRIPT_SUFF = "__script__"
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40
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41
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42 def _next_gidx(value):
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43 """Use next current global index as suffix"""
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44 next_ = gidx.next(value)
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45 return f"{value}{SCRIPT_SUFF}" if next_ == 0 else f"{value}_{SCRIPT_SUFF}{next_}"
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46
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47 env.addFilter("next_gidx", _next_gidx)
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48
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49
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50 def _cur_gidx(value):
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51 """Use current current global index as suffix"""
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52 current = gidx.current(value)
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53 return f"{value}{SCRIPT_SUFF}" if not current else f"{value}_{SCRIPT_SUFF}{current}"
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54
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55 env.addFilter("cur_gidx", _cur_gidx)
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56
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57
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58 def _tojson(value):
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59 return safe(
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60 window.JSON.stringify(value)
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61 .replace('&', '&amp;')
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62 .replace('<', '&lt;')
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63 .replace('>', '&gt;')
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64 .replace('"', '&quot;')
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65 )
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66
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67 env.addFilter("tojson", _tojson)
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68
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69
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70 def _icon_use(name, cls=""):
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71 kwargs = cls.to_dict()
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72 cls = kwargs.get('cls')
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73 return safe(
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74 '<svg class="svg-icon{cls}" xmlns="http://www.w3.org/2000/svg" '
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75 'viewBox="0 0 100 100">\n'
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76 ' <use href="#{name}"/>'
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77 '</svg>\n'.format(name=name, cls=(" " + cls) if cls else "")
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78 )
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79
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80 env.addGlobal("icon", _icon_use)
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81
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82
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83 class Template:
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84
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85 def __init__(self, tpl_name):
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86 self._tpl = env.getTemplate(tpl_name, True)
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87
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88 def render(self, context):
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89 return self._tpl.render(context)
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90
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91 def get_elt(self, context):
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92 raw_html = self.render(context)
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93 template_elt = document.createElement('template')
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94 template_elt.innerHTML = raw_html
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95 return template_elt.content.firstChild