1 | from .common import *
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2 |
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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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7 | import platform
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8 | import json
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9 | import time
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10 | import os
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11 | import re
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12 | import _thread
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13 | import threading
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14 | import tempfile
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15 | import traceback
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16 | import ctypes
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17 | import urllib.request, urllib.error, urllib.parse
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18 | from lxml import etree
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19 | from io import StringIO
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20 | import lxml.html
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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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33 | # The SimBrief handler
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34 | _simBriefHandler = None
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35 |
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36 | #------------------------------------------------------------------------------
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37 |
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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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44 |
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45 | SIMBRIEF_PROGRESS_RETRIEVING_BRIEFING = 7
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46 | SIMBRIEF_PROGRESS_DONE = 1000
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47 |
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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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54 |
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55 | #------------------------------------------------------------------------------
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56 |
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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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60 |
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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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70 |
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71 |
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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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82 |
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83 | def initialize(self):
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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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88 | self._browser = \
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89 | cefpython.CreateBrowserSync(windowInfo, browserSettings = {},
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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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94 | self._browser.SetClientCallback("OnLoadError", self._onLoadError)
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95 | self._browser.SetClientCallback("OnBeforeBrowse",
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96 | lambda browser, frame, request,
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97 | user_gesture, is_redirect: False)
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98 |
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99 | def call(self, plan, getCredentials, updateProgress, htmlFilePath):
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100 | """Call SimBrief with the given plan."""
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101 | self._timeoutID = GObject.timeout_add(120*1000, self._timedOut)
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102 |
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103 | self._plan = plan
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104 | self._getCredentials = getCredentials
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105 | self._getCredentialsCount = 0
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106 | self._updateProgressFn = updateProgress
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107 | self._htmlFilePath = htmlFilePath
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108 |
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109 | self._browser.LoadUrl(SimBriefHandler._formURL)
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110 | self._updateProgress(SIMBRIEF_PROGRESS_LOADING_FORM,
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111 | SIMBRIEF_RESULT_NONE, None)
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112 |
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113 | def finalize(self):
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114 | """Close the browser and release it."""
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115 | self._browser.CloseBrowser()
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116 | self._browser = None
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117 |
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118 | def _onLoadEnd(self, browser, frame, http_code):
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119 | """Called when a page has been loaded in the SimBrief browser."""
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120 | url = frame.GetUrl()
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121 | print("gui.cef.SimBriefHandler._onLoadEnd", http_code, url)
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122 | if http_code>=300:
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123 | self._updateProgress(self._lastProgress,
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124 | SIMBRIEF_RESULT_ERROR_OTHER, None)
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125 | elif url.startswith("http://flare.privatedns.org/mava_simbrief/simbrief_form.html"):
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126 | if self._plan is None:
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127 | return
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128 |
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129 | self._updateProgress(SIMBRIEF_PROGRESS_FILLING_FORM,
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130 | SIMBRIEF_RESULT_NONE, None)
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131 |
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132 | js = "form=document.getElementById(\"sbapiform\");"
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133 | for (name, value) in self._plan.items():
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134 | js += "form." + name + ".value=\"" + value + "\";"
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135 | for (name, value) in SimBriefHandler._querySettings.items():
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136 | if isinstance(value, bool):
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137 | js += "form." + name + ".checked=" + \
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138 | ("true" if value else "false") + ";"
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139 | elif isinstance(value, str):
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140 | js += "form." + name + ".value=\"" + value + "\";"
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141 |
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142 | js += "form.submitform.click();"
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143 | js += "window.formFilled();"
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144 |
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145 | frame.ExecuteJavascript(js)
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146 | elif url.startswith("http://www.simbrief.com/system/login.api.php"):
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147 | (user, password) = self._getCredentials(self._getCredentialsCount)
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148 | if user is None or password is None:
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149 | self._updateProgress(SIMBRIEF_PROGRESS_WAITING_LOGIN,
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150 | SIMBRIEF_RESULT_ERROR_LOGIN_FAILED, None)
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151 | return
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152 |
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153 | self._getCredentialsCount += 1
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154 | js = "form=document.forms[0];"
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155 | js += "form.user.value=\"" + user + "\";"
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156 | js += "form.pass.value=\"" + password + "\";"
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157 | js += "form.submit();"
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158 | frame.ExecuteJavascript(js)
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159 | elif url.startswith("http://www.simbrief.com/ofp/ofp.loader.api.php"):
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160 | self._updateProgress(SIMBRIEF_PROGRESS_WAITING_RESULT,
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161 | SIMBRIEF_RESULT_NONE, None)
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162 | elif url.startswith("http://flare.privatedns.org/mava_simbrief/simbrief_briefing.php"):
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163 | js = "form=document.getElementById(\"hiddenform\");"
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164 | js += "window.briefingData(form.hidden_is_briefing_available.value, form.hidden_link.value);";
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165 | frame.ExecuteJavascript(js)
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166 |
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167 | def _formFilled(self):
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168 | """Called when the form has been filled and submitted."""
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169 | self._updateProgress(SIMBRIEF_PROGRESS_WAITING_LOGIN,
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170 | SIMBRIEF_RESULT_NONE, None)
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171 |
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172 | def _briefingDataAvailable(self, available, link):
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173 | """Called when the briefing data is available."""
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174 | if available:
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175 | link ="http://www.simbrief.com/ofp/flightplans/xml/" + link + ".xml"
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176 |
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177 | self._updateProgress(SIMBRIEF_PROGRESS_RETRIEVING_BRIEFING,
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178 | SIMBRIEF_RESULT_NONE, None)
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179 |
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180 | thread = threading.Thread(target = self._getResults, args = (link,))
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181 | _thread.daemon = True
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182 | _thread.start()
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183 | else:
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184 | self._updateProgress(SIMBRIEF_PROGRESS_RETRIEVING_BRIEFING,
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185 | SIMBRIEF_RESULT_ERROR_OTHER, None)
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186 |
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187 | def _onLoadError(self, browser, frame, error_code, error_text_out,
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188 | failed_url):
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189 | """Called when loading of an URL fails."""
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190 | print("gui.cef.SimBriefHandler._onLoadError", browser, frame, error_code, error_text_out, failed_url)
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191 | self._updateProgress(self._lastProgress,
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192 | SIMBRIEF_RESULT_ERROR_OTHER, None)
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193 |
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194 | def _updateProgress(self, progress, results, flightInfo):
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195 | """Update the progress."""
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196 | self._lastProgress = progress
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197 | if results!=SIMBRIEF_RESULT_NONE:
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198 | if self._timeoutID is not None:
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199 | GObject.source_remove(self._timeoutID)
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200 | self._plan = None
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201 |
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202 | if self._updateProgressFn is not None:
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203 | self._updateProgressFn(progress, results, flightInfo)
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204 |
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205 | def _timedOut(self):
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206 | """Called when the timeout occurs."""
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207 | if self._lastProgress==SIMBRIEF_PROGRESS_LOADING_FORM:
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208 | result = SIMBRIEF_RESULT_ERROR_NO_FORM
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209 | elif self._lastProgress==SIMBRIEF_PROGRESS_WAITING_LOGIN:
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210 | result = SIMBRIEF_RESULT_ERROR_NO_POPUP
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211 | else:
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212 | result = SIMBRIEF_RESULT_ERROR_OTHER
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213 |
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214 | self._updateProgress(self._lastProgress, result, None)
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215 |
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216 | return False
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217 |
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218 | def _getResults(self, link):
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219 | """Get the result from the given link."""
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220 | availableInfo = {}
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221 | ## Holds analysis data to be used
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222 | flightInfo = {}
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223 |
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224 | # Obtaining the xml
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225 | response = urllib.request.urlopen(link)
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226 | xmlContent = response.read()
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227 | # Processing xml
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228 | content = etree.iterparse(StringIO(xmlContent))
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229 |
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230 | for (action, element) in content:
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231 | # Processing tags that occur multiple times
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232 | if element.tag == "weather":
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233 | weatherElementList = list(element)
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234 | for weatherElement in weatherElementList:
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235 | flightInfo[weatherElement.tag] = weatherElement.text
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236 | else:
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237 | availableInfo[element.tag] = element.text
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238 |
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239 | # Processing plan_html
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240 | ## Obtaining chart links
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241 | imageLinks = []
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242 | for imageLinkElement in lxml.html.find_class(availableInfo["plan_html"],
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243 | "ofpmaplink"):
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244 | for imageLink in imageLinkElement.iterlinks():
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245 | if imageLink[1] == 'src':
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246 | imageLinks.append(imageLink[2])
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247 | flightInfo["image_links"] = imageLinks
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248 | print((sorted(availableInfo.keys())))
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249 | htmlFilePath = "simbrief_plan.html" if self._htmlFilePath is None \
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250 | else self._htmlFilePath
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251 | with open(htmlFilePath, 'w') as f:
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252 | f.write(availableInfo["plan_html"])
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253 |
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254 | GObject.idle_add(self._resultsAvailable, flightInfo)
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255 |
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256 | #------------------------------------------------------------------------------
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257 |
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258 | def initialize(initializedCallback):
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259 | """Initialize the Chrome Embedded Framework."""
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260 | global _toQuit, _simBriefHandler
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261 | _toQuit = False
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262 |
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263 | GObject.threads_init()
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264 |
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265 | _simBriefHandler = SimBriefHandler()
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266 | _initializeCEF([], initializedCallback)
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267 |
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268 | #------------------------------------------------------------------------------
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269 |
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270 | def _initializeCEF(args, initializedCallback):
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271 | """Perform the actual initialization of CEF using the given arguments."""
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272 | print("Initializing CEF with args:", args)
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273 |
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274 | settings = {
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275 | "debug": True, # cefpython debug messages in console and in log_file
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276 | "log_severity": cefpython.LOGSEVERITY_VERBOSE, # LOGSEVERITY_VERBOSE
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277 | "log_file": "", # Set to "" to disable
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278 | "release_dcheck_enabled": True, # Enable only when debugging
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279 | # This directories must be set on Linux
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280 | "locales_dir_path": os.path.join(cefpython.GetModuleDirectory(), "locales"),
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281 | "resources_dir_path": cefpython.GetModuleDirectory(),
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282 | "browser_subprocess_path": "%s/%s" % \
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283 | (cefpython.GetModuleDirectory(), "subprocess"),
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284 | "windowless_rendering_enabled": True,
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285 | "cache_path": os.path.join(GLib.get_user_cache_dir(),
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286 | "mlxcef")
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287 | }
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288 |
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289 | switches={}
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290 | for arg in args:
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291 | if arg.startswith("--"):
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292 | if arg != "--enable-logging":
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293 | assignIndex = arg.find("=")
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294 | if assignIndex<0:
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295 | switches[arg[2:]] = ""
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296 | else:
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297 | switches[arg[2:assignIndex]] = arg[assignIndex+1:]
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298 | else:
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299 | print("Unhandled switch", arg)
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300 |
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301 | cefpython.Initialize(settings, switches)
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302 |
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303 | GObject.timeout_add(10, _handleTimeout)
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304 |
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305 | print("Initialized, executing callback...")
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306 | initializedCallback()
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307 |
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308 | #------------------------------------------------------------------------------
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309 |
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310 | def getContainer():
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311 | """Get a container object suitable for running a browser instance
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312 | within."""
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313 | container = Gtk.DrawingArea()
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314 | container.set_property("can-focus", True)
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315 | container.connect("size-allocate", _handleSizeAllocate)
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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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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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335 | windowRect = [0, 0, 1, 1]
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336 | else:
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337 | container.set_visual(container.get_screen().lookup_visual(0x21))
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338 | windowID = container.get_window().get_xid()
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339 | windowRect = None
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340 |
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341 | windowInfo = cefpython.WindowInfo()
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342 | if windowID is not None:
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343 | windowInfo.SetAsChild(windowID, windowRect = windowRect)
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344 |
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345 | browser = cefpython.CreateBrowserSync(windowInfo,
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346 | browserSettings = browserSettings,
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347 | navigateUrl = url)
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348 | container.browser = browser
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349 |
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350 | return browser
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351 |
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352 | #------------------------------------------------------------------------------
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353 |
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354 | class OffscreenRenderHandler(object):
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355 | def GetRootScreenRect(self, browser, rect_out):
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356 | #print "GetRootScreenRect"
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357 | rect_out += [0, 0, 1920, 1080]
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358 | return True
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359 |
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360 | def GetViewRect(self, browser, rect_out):
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361 | #print "GetViewRect"
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362 | rect_out += [0, 40, 1920, 1040]
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363 | return True
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364 |
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365 | def GetScreenPoint(self, browser, viewX, viewY, screenCoordinates):
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366 | #print "GetScreenPoint", viewX, viewY
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367 | rect += [viewX, viewY]
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368 | return True
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369 |
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370 | def GetScreenInfo(self, browser, screenInfo):
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371 | #print "GetScreenInfo"
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372 | pass
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373 |
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374 | def OnPopupShow(self, browser, show):
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375 | #print "OnPopupShow", show
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376 | pass
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377 |
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378 | def OnPopupSize(self, browser, rect):
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379 | #print "OnPopupSize", rect
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380 | pass
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381 |
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382 | def OnPaint(self, browser, element_type, dirty_rects, paint_buffer, width, height):
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383 | #print "OnPaint", paintElementType, dirtyRects, buffer, width, height
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384 | pass
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385 |
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386 | def OnCursorChange(self, browser, cursor):
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387 | #print "OnCursorChange", cursor
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388 | pass
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389 |
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390 | def OnScrollOffsetChanged(self, browser):
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391 | #print "OnScrollOffsetChange"
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392 | pass
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393 |
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394 | def OnBeforePopup(self, browser, frame, target_url, target_frame_name,
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395 | target_disposition, user_gesture,
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396 | popup_features, window_info_out, client,
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397 | browser_settings_out, no_javascript_access_out,
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398 | **kwargs):
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399 | wInfo = cefpython.WindowInfo()
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400 | wInfo.SetAsOffscreen(int(0))
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401 |
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402 | window_info_out.append(wInfo)
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403 |
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404 | return False
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405 |
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406 | #------------------------------------------------------------------------------
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407 |
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408 | def initializeSimBrief():
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409 | """Initialize the (hidden) browser window for SimBrief."""
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410 | _simBriefHandler.initialize()
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411 |
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412 | #------------------------------------------------------------------------------
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413 |
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414 | def callSimBrief(plan, getCredentials, updateProgress, htmlFilePath):
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415 | """Call SimBrief with the given plan.
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416 |
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417 | The callbacks will be called in the main GUI thread."""
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418 | _simBriefHandler.call(plan, getCredentials, updateProgress, htmlFilePath)
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419 |
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420 | #------------------------------------------------------------------------------
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421 |
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422 | def finalize():
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423 | """Finalize the Chrome Embedded Framework."""
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424 | global _toQuit
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425 | _toQuit = True
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426 |
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427 | _simBriefHandler.finalize()
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428 |
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429 | cefpython.Shutdown()
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430 |
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431 | #------------------------------------------------------------------------------
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432 |
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433 | def _handleTimeout():
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434 | """Handle the timeout by running the CEF message loop."""
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435 | if _toQuit:
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436 | return False
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437 | else:
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438 | cefpython.MessageLoopWork()
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439 | return True
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440 |
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441 | #------------------------------------------------------------------------------
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442 |
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443 | def _handleSizeAllocate(widget, sizeAlloc):
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444 | """Handle the size-allocate event on Windows."""
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445 | if os.name=="nt":
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446 | if widget is not None and hasattr(widget, "windowID"):
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447 | cefpython.WindowUtils.OnSize(widget.windowID, 0, 0, 0)
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448 | else:
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449 | if widget is not None and hasattr(widget, "browser") and \
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450 | widget.browser is not None:
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451 | widget.browser.SetBounds(sizeAlloc.x, sizeAlloc.y,
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452 | sizeAlloc.width, sizeAlloc.height)
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