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annotate libervia/pages/_browser/bridge.py @ 1321:eb85ef26cb4a

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server: use `bulma` theme as default for default site: `default` theme is not used for now as real default, because dev work is focusing on bulma theme, and the default one may be broken. This should (or may not) change in the future.
author Goffi <goffi@goffi.org>
date Sat, 01 Aug 2020 16:56:04 +0200
parents 8998f01088ac
children b28025a7cc28
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
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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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8998f01088ac browser (bridge): handle case where `callback` or `errback` is None
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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)