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Add an unhandled exception handler for the iframe

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This commit is contained in:
Kovid Goyal 2016-04-30 15:29:00 +05:30
parent 804fca17e2
commit f8ae941269
1 changed files with 15 additions and 2 deletions
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17
src/pyj/read_book/iframe.pyj
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@ -4,7 +4,7 @@ from __python__ import bound_methods, hash_literals
import traceback
from aes import GCM
from gettext import install
from gettext import install, gettext as _
from read_book.globals import set_boss, set_current_spine_item, current_layout_mode, current_spine_item, set_layout_mode
from read_book.resources import finalize_resources, unserialize_html
from read_book.flow_mode import flow_to_scroll_fraction, flow_onwheel, flow_onkeydown, layout as flow_layout
@ -50,7 +50,7 @@ class Boss:
except Exception as e:
console.log('Error in iframe message handler:')
console.log(e)
self.send_message('error', details=traceback.format_exc(), msg=e.toString())
self.send_message('error', title=_('Error in message handler'), details=traceback.format_exc(), msg=e.toString())
else:
print('Unknown action in message to iframe from parent: ' + data.action)
@ -58,6 +58,18 @@ class Boss:
self.gcm_from_parent, self.gcm_to_parent = GCM(data.secret.subarray(0, 32)), GCM(data.secret.subarray(32))
if data.translations:
install(data.translations)
window.onerror = self.onerror
def onerror(self, msg, script_url, line_number, column_number, error_object):
console.log(error_object)
try:
fname = script_url.rpartition('/')[-1] or script_url
msg = msg + '<br><span style="font-size:smaller">' + 'Error at {}:{}:{}'.format(fname, line_number, column_number or '') + '</span>'
details = traceback.format_exception(error_object).join('') if error_object else ''
self.send_message('error', title=_('Unhandled error'), details=details, msg=msg)
return True
except:
console.log('There was an error in the iframe unhandled exception handler')
def display(self, data):
self.encrypted_communications = True
@ -127,6 +139,7 @@ class Boss:
try:
data = JSON.parse(evt.currentTarget.getAttribute(link_attr))
except:
print('WARNING: Failed to parse link data {}, ignoring'.format(evt.currentTarget.getAttribute(link_attr)))
return
name, frag = data.name, data.frag
if name is current_spine_item().name: