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annotate libervia/pages/_browser/bridge.py @ 1406:cffa3ae4d0aa

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pages (blog/view): move URL friendly code to backend tools: - the code to render an URL friendly is now in `sat.tools.common.regex` - user friendly extra text is now only displayed when no `-` is found in ID. This is a temporary transition behaviour because new blog items IDs are now user friendly by default, and thus extra text is not wanted anymore. For older IDs it is still needed though, and the presence of `-` is used to guess when an ID is user friendly or not.
author Goffi <goffi@goffi.org>
date Fri, 16 Apr 2021 18:44:49 +0200
parents 8998f01088ac
children b28025a7cc28
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999dccf0093e browser: new bridge module to access restricted bridge from browser
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1 from browser import window
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2 import javascript
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3
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4
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5 class Bridge:
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6
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7 def __getattr__(self, attr):
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8 return lambda *args, **kwargs: self.call(attr, *args, **kwargs)
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9
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10 def on_load(self, xhr, ev, callback, errback):
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11 if xhr.status == 200:
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12 ret = javascript.JSON.parse(xhr.response)
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13 if callback is not None:
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14 if ret is None:
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15 callback()
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16 else:
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17 callback(ret)
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18 elif xhr.status == 502:
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19 # PROXY_ERROR is used for bridge error
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20 ret = javascript.JSON.parse(xhr.response)
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21 if errback is not None:
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22 errback(ret)
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23 else:
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24 print(f"bridge called failed: code: {xhr.response}, text: {xhr.statusText}")
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25 if errback is not None:
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26 errback({"fullname": "InternalError", "message": xhr.statusText})
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27
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28 def call(self, method_name, *args, callback, errback, **kwargs):
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29 xhr = window.XMLHttpRequest.new()
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30 xhr.bind('load', lambda ev: self.on_load(xhr, ev, callback, errback))
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31 xhr.bind('error', lambda ev: errback(
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32 {"fullname": "ConnectionError", "message": xhr.statusText}))
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33 xhr.open("POST", f"/_bridge/{method_name}", True)
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34 data = javascript.JSON.stringify({
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35 "args": args,
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36 "kwargs": kwargs,
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37 })
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38 xhr.setRequestHeader('X-Csrf-Token', window.csrf_token)
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39 xhr.send(data)