[919] | 1 | from .common import *
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[648] | 2 |
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[682] | 3 | from mlx.util import secondaryInstallation
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| 4 |
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| 5 | from cefpython3 import cefpython
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| 6 |
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[648] | 7 | import platform
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| 8 | import json
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[682] | 9 | import time
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[648] | 10 | import os
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| 11 | import re
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[919] | 12 | import _thread
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[682] | 13 | import threading
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| 14 | import tempfile
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| 15 | import traceback
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[945] | 16 | import ctypes
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[919] | 17 | import urllib.request, urllib.error, urllib.parse
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[805] | 18 | from lxml import etree
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[919] | 19 | from io import StringIO
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[805] | 20 | import lxml.html
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[648] | 21 |
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| 22 | #------------------------------------------------------------------------------
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| 23 |
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| 24 | ## @package mlx.gui.cef
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| 25 | #
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| 26 | # Some helper stuff related to the Chrome Embedded Framework
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| 27 |
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| 28 | #------------------------------------------------------------------------------
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| 29 |
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| 30 | # Indicate if we should quit
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| 31 | _toQuit = False
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| 32 |
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[805] | 33 | # The SimBrief handler
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| 34 | _simBriefHandler = None
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[682] | 35 |
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| 36 | #------------------------------------------------------------------------------
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| 37 |
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[805] | 38 | SIMBRIEF_PROGRESS_SEARCHING_BROWSER = 1
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| 39 | SIMBRIEF_PROGRESS_LOADING_FORM = 2
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| 40 | SIMBRIEF_PROGRESS_FILLING_FORM = 3
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| 41 | SIMBRIEF_PROGRESS_WAITING_LOGIN = 4
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| 42 | SIMBRIEF_PROGRESS_LOGGING_IN = 5
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| 43 | SIMBRIEF_PROGRESS_WAITING_RESULT = 6
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[682] | 44 |
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[805] | 45 | SIMBRIEF_PROGRESS_RETRIEVING_BRIEFING = 7
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| 46 | SIMBRIEF_PROGRESS_DONE = 1000
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[682] | 47 |
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[805] | 48 | SIMBRIEF_RESULT_NONE = 0
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| 49 | SIMBRIEF_RESULT_OK = 1
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| 50 | SIMBRIEF_RESULT_ERROR_OTHER = 2
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| 51 | SIMBRIEF_RESULT_ERROR_NO_FORM = 11
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| 52 | SIMBRIEF_RESULT_ERROR_NO_POPUP = 12
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| 53 | SIMBRIEF_RESULT_ERROR_LOGIN_FAILED = 13
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[682] | 54 |
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[648] | 55 | #------------------------------------------------------------------------------
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| 56 |
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[805] | 57 | class SimBriefHandler(object):
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| 58 | """An object to store the state of a SimBrief query."""
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| 59 | _formURL = "http://flare.privatedns.org/mava_simbrief/simbrief_form.html"
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[692] | 60 |
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[805] | 61 | _querySettings = {
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| 62 | 'navlog': True,
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| 63 | 'etops': True,
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| 64 | 'stepclimbs': True,
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| 65 | 'tlr': True,
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| 66 | 'notams': True,
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| 67 | 'firnot': True,
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| 68 | 'maps': 'Simple',
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| 69 | };
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[682] | 70 |
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| 71 |
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[805] | 72 | def __init__(self):
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| 73 | """Construct the handler."""
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| 74 | self._browser = None
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| 75 | self._plan = None
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| 76 | self._getCredentials = None
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| 77 | self._getCredentialsCount = 0
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| 78 | self._updateProgressFn = None
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| 79 | self._htmlFilePath = None
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| 80 | self._lastProgress = SIMBRIEF_PROGRESS_SEARCHING_BROWSER
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| 81 | self._timeoutID = None
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[682] | 82 |
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[805] | 83 | def initialize(self):
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[695] | 84 | """Create and initialize the browser used for Simbrief."""
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| 85 | windowInfo = cefpython.WindowInfo()
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| 86 | windowInfo.SetAsOffscreen(int(0))
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| 87 |
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[805] | 88 | self._browser = \
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[695] | 89 | cefpython.CreateBrowserSync(windowInfo, browserSettings = {},
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[805] | 90 | navigateUrl = SimBriefHandler._formURL)
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| 91 | self._browser.SetClientHandler(OffscreenRenderHandler())
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| 92 | self._browser.SetFocus(True)
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| 93 | self._browser.SetClientCallback("OnLoadEnd", self._onLoadEnd)
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[695] | 94 |
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[805] | 95 | bindings = cefpython.JavascriptBindings(bindToFrames=True,
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| 96 | bindToPopups=True)
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| 97 | bindings.SetFunction("briefingData", self._briefingDataAvailable)
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| 98 | bindings.SetFunction("formFilled", self._formFilled)
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| 99 | self._browser.SetJavascriptBindings(bindings)
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| 100 |
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| 101 | def call(self, plan, getCredentials, updateProgress, htmlFilePath):
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[685] | 102 | """Call SimBrief with the given plan."""
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[805] | 103 | self._timeoutID = gobject.timeout_add(120*1000, self._timedOut)
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| 104 |
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| 105 | self._plan = plan
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| 106 | self._getCredentials = getCredentials
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| 107 | self._getCredentialsCount = 0
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| 108 | self._updateProgressFn = updateProgress
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| 109 | self._htmlFilePath = htmlFilePath
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| 110 |
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| 111 | self._browser.LoadUrl(SimBriefHandler._formURL)
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| 112 | self._updateProgress(SIMBRIEF_PROGRESS_LOADING_FORM,
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| 113 | SIMBRIEF_RESULT_NONE, None)
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| 114 |
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[943] | 115 | def _onLoadEnd(self, browser, frame, http_code):
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[805] | 116 | """Called when a page has been loaded in the SimBrief browser."""
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| 117 | url = frame.GetUrl()
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[943] | 118 | print("gui.cef.SimBriefHandler._onLoadEnd", http_code, url)
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| 119 | if http_code>=300:
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[805] | 120 | self._updateProgress(self._lastProgress,
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| 121 | SIMBRIEF_RESULT_ERROR_OTHER, None)
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| 122 | elif url.startswith("http://flare.privatedns.org/mava_simbrief/simbrief_form.html"):
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| 123 | if self._plan is None:
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| 124 | return
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| 125 |
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| 126 | self._updateProgress(SIMBRIEF_PROGRESS_FILLING_FORM,
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| 127 | SIMBRIEF_RESULT_NONE, None)
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[685] | 128 |
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[805] | 129 | js = "form=document.getElementById(\"sbapiform\");"
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[919] | 130 | for (name, value) in self._plan.items():
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[805] | 131 | js += "form." + name + ".value=\"" + value + "\";"
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[919] | 132 | for (name, value) in SimBriefHandler._querySettings.items():
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[805] | 133 | if isinstance(value, bool):
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| 134 | js += "form." + name + ".checked=" + \
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| 135 | ("true" if value else "false") + ";"
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| 136 | elif isinstance(value, str):
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| 137 | js += "form." + name + ".value=\"" + value + "\";"
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| 138 |
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| 139 | js += "form.submitform.click();"
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| 140 | js += "window.formFilled();"
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[682] | 141 |
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[805] | 142 | frame.ExecuteJavascript(js)
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| 143 | elif url.startswith("http://www.simbrief.com/system/login.api.php"):
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| 144 | (user, password) = self._getCredentials(self._getCredentialsCount)
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| 145 | if user is None or password is None:
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| 146 | self._updateProgress(SIMBRIEF_PROGRESS_WAITING_LOGIN,
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| 147 | SIMBRIEF_RESULT_ERROR_LOGIN_FAILED, None)
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| 148 | return
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[682] | 149 |
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[805] | 150 | self._getCredentialsCount += 1
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| 151 | js = "form=document.forms[0];"
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| 152 | js += "form.user.value=\"" + user + "\";"
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| 153 | js += "form.pass.value=\"" + password + "\";"
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| 154 | js += "form.submit();"
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| 155 | frame.ExecuteJavascript(js)
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| 156 | elif url.startswith("http://www.simbrief.com/ofp/ofp.loader.api.php"):
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| 157 | self._updateProgress(SIMBRIEF_PROGRESS_WAITING_RESULT,
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| 158 | SIMBRIEF_RESULT_NONE, None)
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| 159 | elif url.startswith("http://flare.privatedns.org/mava_simbrief/simbrief_briefing.php"):
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| 160 | js = "form=document.getElementById(\"hiddenform\");"
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| 161 | js += "window.briefingData(form.hidden_is_briefing_available.value, form.hidden_link.value);";
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| 162 | frame.ExecuteJavascript(js)
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| 163 |
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| 164 | def _formFilled(self):
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| 165 | """Called when the form has been filled and submitted."""
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| 166 | self._updateProgress(SIMBRIEF_PROGRESS_WAITING_LOGIN,
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| 167 | SIMBRIEF_RESULT_NONE, None)
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[682] | 168 |
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[805] | 169 | def _briefingDataAvailable(self, available, link):
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| 170 | """Called when the briefing data is available."""
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| 171 | if available:
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| 172 | link ="http://www.simbrief.com/ofp/flightplans/xml/" + link + ".xml"
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| 173 |
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| 174 | self._updateProgress(SIMBRIEF_PROGRESS_RETRIEVING_BRIEFING,
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| 175 | SIMBRIEF_RESULT_NONE, None)
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| 176 |
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| 177 | thread = threading.Thread(target = self._getResults, args = (link,))
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[919] | 178 | _thread.daemon = True
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| 179 | _thread.start()
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[805] | 180 | else:
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| 181 | self._updateProgress(SIMBRIEF_PROGRESS_RETRIEVING_BRIEFING,
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| 182 | SIMBRIEF_RESULT_ERROR_OTHER, None)
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| 183 |
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| 184 | def _resultsAvailable(self, flightInfo):
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| 185 | """Called from the result retrieval thread when the result is
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| 186 | available.
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[696] | 187 |
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[805] | 188 | It checks for the plan being not None, as we may time out."""
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| 189 | if self._plan is not None:
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| 190 | self._updateProgress(SIMBRIEF_PROGRESS_DONE,
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| 191 | SIMBRIEF_RESULT_OK, flightInfo)
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| 192 |
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| 193 | def _updateProgress(self, progress, results, flightInfo):
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| 194 | """Update the progress."""
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| 195 | self._lastProgress = progress
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| 196 | if results!=SIMBRIEF_RESULT_NONE:
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[944] | 197 | if self._timeoutID is not None:
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| 198 | gobject.source_remove(self._timeoutID)
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[805] | 199 | self._plan = None
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| 200 |
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[944] | 201 | if self._updateProgressFn is not None:
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| 202 | self._updateProgressFn(progress, results, flightInfo)
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[805] | 203 |
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| 204 | def _timedOut(self):
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| 205 | """Called when the timeout occurs."""
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| 206 | if self._lastProgress==SIMBRIEF_PROGRESS_LOADING_FORM:
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| 207 | result = SIMBRIEF_RESULT_ERROR_NO_FORM
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| 208 | elif self._lastProgress==SIMBRIEF_PROGRESS_WAITING_LOGIN:
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| 209 | result = SIMBRIEF_RESULT_ERROR_NO_POPUP
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| 210 | else:
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| 211 | result = SIMBRIEF_RESULT_ERROR_OTHER
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[685] | 212 |
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[805] | 213 | self._updateProgress(self._lastProgress, result, None)
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| 214 |
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| 215 | return False
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[685] | 216 |
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[805] | 217 | def _getResults(self, link):
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| 218 | """Get the result from the given link."""
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| 219 | availableInfo = {}
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| 220 | ## Holds analysis data to be used
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| 221 | flightInfo = {}
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| 222 |
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| 223 | # Obtaining the xml
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[919] | 224 | response = urllib.request.urlopen(link)
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[805] | 225 | xmlContent = response.read()
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| 226 | # Processing xml
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| 227 | content = etree.iterparse(StringIO(xmlContent))
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[685] | 228 |
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[805] | 229 | for (action, element) in content:
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| 230 | # Processing tags that occur multiple times
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| 231 | if element.tag == "weather":
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| 232 | weatherElementList = list(element)
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| 233 | for weatherElement in weatherElementList:
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| 234 | flightInfo[weatherElement.tag] = weatherElement.text
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| 235 | else:
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| 236 | availableInfo[element.tag] = element.text
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[685] | 237 |
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[805] | 238 | # Processing plan_html
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| 239 | ## Obtaining chart links
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| 240 | imageLinks = []
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| 241 | for imageLinkElement in lxml.html.find_class(availableInfo["plan_html"],
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| 242 | "ofpmaplink"):
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| 243 | for imageLink in imageLinkElement.iterlinks():
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| 244 | if imageLink[1] == 'src':
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| 245 | imageLinks.append(imageLink[2])
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| 246 | flightInfo["image_links"] = imageLinks
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[919] | 247 | print((sorted(availableInfo.keys())))
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[805] | 248 | htmlFilePath = "simbrief_plan.html" if self._htmlFilePath is None \
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| 249 | else self._htmlFilePath
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| 250 | with open(htmlFilePath, 'w') as f:
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| 251 | f.write(availableInfo["plan_html"])
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| 252 |
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| 253 | gobject.idle_add(self._resultsAvailable, flightInfo)
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[682] | 254 |
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| 255 | #------------------------------------------------------------------------------
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| 256 |
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[805] | 257 | def initialize(initializedCallback):
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[648] | 258 | """Initialize the Chrome Embedded Framework."""
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[805] | 259 | global _toQuit, _simBriefHandler
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[648] | 260 | _toQuit = False
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| 261 |
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| 262 | gobject.threads_init()
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| 263 |
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[805] | 264 | _simBriefHandler = SimBriefHandler()
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| 265 | _initializeCEF([], initializedCallback)
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[682] | 266 |
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| 267 | #------------------------------------------------------------------------------
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| 268 |
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| 269 | def _initializeCEF(args, initializedCallback):
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| 270 | """Perform the actual initialization of CEF using the given arguments."""
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[919] | 271 | print("Initializing CEF with args:", args)
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[682] | 272 |
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[648] | 273 | settings = {
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| 274 | "debug": True, # cefpython debug messages in console and in log_file
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| 275 | "log_severity": cefpython.LOGSEVERITY_VERBOSE, # LOGSEVERITY_VERBOSE
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| 276 | "log_file": "", # Set to "" to disable
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| 277 | "release_dcheck_enabled": True, # Enable only when debugging
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| 278 | # This directories must be set on Linux
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| 279 | "locales_dir_path": os.path.join(cefpython.GetModuleDirectory(), "locales"),
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| 280 | "resources_dir_path": cefpython.GetModuleDirectory(),
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| 281 | "browser_subprocess_path": "%s/%s" % \
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| 282 | (cefpython.GetModuleDirectory(), "subprocess"),
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| 283 | }
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| 284 |
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[682] | 285 | switches={}
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| 286 | for arg in args:
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| 287 | if arg.startswith("--"):
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| 288 | if arg != "--enable-logging":
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| 289 | assignIndex = arg.find("=")
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| 290 | if assignIndex<0:
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| 291 | switches[arg[2:]] = ""
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| 292 | else:
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| 293 | switches[arg[2:assignIndex]] = arg[assignIndex+1:]
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| 294 | else:
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[919] | 295 | print("Unhandled switch", arg)
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[682] | 296 |
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| 297 | cefpython.Initialize(settings, switches)
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[648] | 298 |
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| 299 | gobject.timeout_add(10, _handleTimeout)
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| 300 |
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[919] | 301 | print("Initialized, executing callback...")
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[682] | 302 | initializedCallback()
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| 303 |
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[648] | 304 | #------------------------------------------------------------------------------
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| 305 |
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| 306 | def getContainer():
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| 307 | """Get a container object suitable for running a browser instance
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| 308 | within."""
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| 309 | if os.name=="nt":
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| 310 | container = gtk.DrawingArea()
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| 311 | container.set_property("can-focus", True)
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| 312 | container.connect("size-allocate", _handleSizeAllocate)
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| 313 | else:
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[913] | 314 | container = gtk.DrawingArea()
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[648] | 315 |
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| 316 | container.show()
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| 317 |
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| 318 | return container
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| 319 |
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| 320 | #------------------------------------------------------------------------------
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| 321 |
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| 322 | def startInContainer(container, url, browserSettings = {}):
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| 323 | """Start a browser instance in the given container with the given URL."""
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| 324 | if os.name=="nt":
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[945] | 325 | gdk.threads_enter()
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| 326 | ctypes.pythonapi.PyCapsule_GetPointer.restype = ctypes.c_void_p
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| 327 | ctypes.pythonapi.PyCapsule_GetPointer.argtypes = \
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| 328 | [ctypes.py_object]
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| 329 | gpointer = ctypes.pythonapi.PyCapsule_GetPointer(
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| 330 | container.get_property("window").__gpointer__, None)
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| 331 | libgdk = ctypes.CDLL("libgdk-3-0.dll")
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| 332 | windowID = libgdk.gdk_win32_window_get_handle(gpointer)
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| 333 | container.windowID = windowID
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| 334 | gdk.threads_leave()
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[648] | 335 | else:
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[924] | 336 | container.set_visual(container.get_screen().lookup_visual(0x21))
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| 337 | windowID = container.get_window().get_xid()
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[648] | 338 |
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| 339 | windowInfo = cefpython.WindowInfo()
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[805] | 340 | if windowID is not None:
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| 341 | windowInfo.SetAsChild(windowID)
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[648] | 342 |
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| 343 | return cefpython.CreateBrowserSync(windowInfo,
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| 344 | browserSettings = browserSettings,
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| 345 | navigateUrl = url)
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| 346 |
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| 347 | #------------------------------------------------------------------------------
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| 348 |
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[685] | 349 | class OffscreenRenderHandler(object):
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[943] | 350 | def GetRootScreenRect(self, browser, rect_out):
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[685] | 351 | #print "GetRootScreenRect"
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[943] | 352 | rect_out += [0, 0, 800, 600]
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[685] | 353 | return True
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| 354 |
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[943] | 355 | def GetViewRect(self, browser, rect_out):
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[685] | 356 | #print "GetViewRect"
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[943] | 357 | rect_out += [0, 0, 800, 600]
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[685] | 358 | return True
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| 359 |
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| 360 | def GetScreenPoint(self, browser, viewX, viewY, screenCoordinates):
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| 361 | #print "GetScreenPoint", viewX, viewY
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| 362 | rect += [viewX, viewY]
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| 363 | return True
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| 364 |
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| 365 | def GetScreenInfo(self, browser, screenInfo):
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| 366 | #print "GetScreenInfo"
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| 367 | pass
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| 368 |
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| 369 | def OnPopupShow(self, browser, show):
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| 370 | #print "OnPopupShow", show
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| 371 | pass
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| 372 |
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| 373 | def OnPopupSize(self, browser, rect):
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| 374 | #print "OnPopupSize", rect
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| 375 | pass
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| 376 |
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[943] | 377 | def OnPaint(self, browser, element_type, dirty_rects, paint_buffer, width, height):
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[685] | 378 | #print "OnPaint", paintElementType, dirtyRects, buffer, width, height
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| 379 | pass
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| 380 |
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| 381 | def OnCursorChange(self, browser, cursor):
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| 382 | #print "OnCursorChange", cursor
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| 383 | pass
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| 384 |
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| 385 | def OnScrollOffsetChanged(self, browser):
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| 386 | #print "OnScrollOffsetChange"
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| 387 | pass
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| 388 |
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| 389 | def OnBeforePopup(self, browser, frame, targetURL, targetFrameName,
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| 390 | popupFeatures, windowInfo, client, browserSettings,
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| 391 | noJavascriptAccess):
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| 392 | wInfo = cefpython.WindowInfo()
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| 393 | wInfo.SetAsOffscreen(int(0))
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| 394 |
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| 395 | windowInfo.append(wInfo)
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| 396 |
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| 397 | return False
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| 398 |
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| 399 | #------------------------------------------------------------------------------
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| 400 |
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| 401 | def initializeSimBrief():
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| 402 | """Initialize the (hidden) browser window for SimBrief."""
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[805] | 403 | _simBriefHandler.initialize()
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[685] | 404 |
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| 405 | #------------------------------------------------------------------------------
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| 406 |
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| 407 | def callSimBrief(plan, getCredentials, updateProgress, htmlFilePath):
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[805] | 408 | """Call SimBrief with the given plan.
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| 409 |
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| 410 | The callbacks will be called in the main GUI thread."""
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| 411 | _simBriefHandler.call(plan, getCredentials, updateProgress, htmlFilePath)
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[685] | 412 |
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| 413 | #------------------------------------------------------------------------------
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| 414 |
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[648] | 415 | def finalize():
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| 416 | """Finalize the Chrome Embedded Framework."""
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[805] | 417 | global _toQuit
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| 418 | _toQuit = True
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[702] | 419 | cefpython.Shutdown()
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[648] | 420 |
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| 421 | #------------------------------------------------------------------------------
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| 422 |
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| 423 | def _handleTimeout():
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| 424 | """Handle the timeout by running the CEF message loop."""
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| 425 | if _toQuit:
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| 426 | return False
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| 427 | else:
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| 428 | cefpython.MessageLoopWork()
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| 429 | return True
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| 430 |
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| 431 | #------------------------------------------------------------------------------
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| 432 |
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| 433 | def _handleSizeAllocate(widget, sizeAlloc):
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[945] | 434 | """Handle the size-allocate event on Windows."""
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[805] | 435 | if widget is not None:
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[945] | 436 | cefpython.WindowUtils.OnSize(widget.windowID, 0, 0, 0)
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