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  1. 

  2. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
    3. 

  3. <html><head><title>Python: module telemetry.internal.browser.tab</title>
    4. 

  4. <meta charset="utf-8">
    5. 

  5. </head><body bgcolor="#f0f0f8">
    6. 

  6. 

  7. <table width="100%" cellspacing=0 cellpadding=2 border=0 summary="heading">
    8. 

  8. <tr bgcolor="#7799ee">
    9. 

  9. <td valign=bottom>&nbsp;<br>
    10. 

  10. <font color="#ffffff" face="helvetica, arial">&nbsp;<br><big><big><strong><a href="telemetry.html"><font color="#ffffff">telemetry</font></a>.<a href="telemetry.internal.html"><font color="#ffffff">internal</font></a>.<a href="telemetry.internal.browser.html"><font color="#ffffff">browser</font></a>.tab</strong></big></big></font></td
    11. 

  11. ><td align=right valign=bottom
    12. 

  12. ><font color="#ffffff" face="helvetica, arial"><a href=".">index</a><br><a href="../telemetry/internal/browser/tab.py">telemetry/internal/browser/tab.py</a></font></td></tr></table>
    13. 

  13.     <p><tt>#&nbsp;Copyright&nbsp;2012&nbsp;The&nbsp;Chromium&nbsp;Authors.&nbsp;All&nbsp;rights&nbsp;reserved.<br>
    14. 

  14. #&nbsp;Use&nbsp;of&nbsp;this&nbsp;source&nbsp;code&nbsp;is&nbsp;governed&nbsp;by&nbsp;a&nbsp;BSD-style&nbsp;license&nbsp;that&nbsp;can&nbsp;be<br>
    15. 

  15. #&nbsp;found&nbsp;in&nbsp;the&nbsp;LICENSE&nbsp;file.</tt></p>
    16. 

  16. <p>
    17. 

  17. <table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
    18. 

  18. <tr bgcolor="#aa55cc">
    19. 

  19. <td colspan=3 valign=bottom>&nbsp;<br>
    20. 

  20. <font color="#ffffff" face="helvetica, arial"><big><strong>Modules</strong></big></font></td></tr>
    21. 

  21.     
    22. 

  22. <tr><td bgcolor="#aa55cc"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
    23. 

  23. <td width="100%"><table width="100%" summary="list"><tr><td width="25%" valign=top><a href="telemetry.internal.image_processing.video.html">telemetry.internal.image_processing.video</a><br>
    24. 

  24. </td><td width="25%" valign=top><a href="telemetry.internal.browser.web_contents.html">telemetry.internal.browser.web_contents</a><br>
    25. 

  25. </td><td width="25%" valign=top></td><td width="25%" valign=top></td></tr></table></td></tr></table><p>
    26. 

  26. <table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
    27. 

  27. <tr bgcolor="#ee77aa">
    28. 

  28. <td colspan=3 valign=bottom>&nbsp;<br>
    29. 

  29. <font color="#ffffff" face="helvetica, arial"><big><strong>Classes</strong></big></font></td></tr>
    30. 

  30.     
    31. 

  31. <tr><td bgcolor="#ee77aa"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
    32. 

  32. <td width="100%"><dl>
    33. 

  33. <dt><font face="helvetica, arial"><a href="telemetry.internal.browser.web_contents.html#WebContents">telemetry.internal.browser.web_contents.WebContents</a>(<a href="__builtin__.html#object">__builtin__.object</a>)
    34. 

  34. </font></dt><dd>
    35. 

  35. <dl>
    36. 

  36. <dt><font face="helvetica, arial"><a href="telemetry.internal.browser.tab.html#Tab">Tab</a>
    37. 

  37. </font></dt></dl>
    38. 

  38. </dd>
    39. 

  39. </dl>
    40. 

  40.  <p>
    41. 

  41. <table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
    42. 

  42. <tr bgcolor="#ffc8d8">
    43. 

  43. <td colspan=3 valign=bottom>&nbsp;<br>
    44. 

  44. <font color="#000000" face="helvetica, arial"><a name="Tab">class <strong>Tab</strong></a>(<a href="telemetry.internal.browser.web_contents.html#WebContents">telemetry.internal.browser.web_contents.WebContents</a>)</font></td></tr>
    45. 

  45.     
    46. 

  46. <tr bgcolor="#ffc8d8"><td rowspan=2><tt>&nbsp;&nbsp;&nbsp;</tt></td>
    47. 

  47. <td colspan=2><tt>Represents&nbsp;a&nbsp;tab&nbsp;in&nbsp;the&nbsp;browser<br>
    48. 

  48. &nbsp;<br>
    49. 

  49. The&nbsp;important&nbsp;parts&nbsp;of&nbsp;the&nbsp;<a href="#Tab">Tab</a>&nbsp;object&nbsp;are&nbsp;in&nbsp;the&nbsp;runtime&nbsp;and&nbsp;page&nbsp;objects.<br>
    50. 

  50. E.g.:<br>
    51. 

  51. &nbsp;&nbsp;&nbsp;&nbsp;#&nbsp;Navigates&nbsp;the&nbsp;tab&nbsp;to&nbsp;a&nbsp;given&nbsp;url.<br>
    52. 

  52. &nbsp;&nbsp;&nbsp;&nbsp;tab.<a href="#Tab-Navigate">Navigate</a>('<a href="http://www.google.com/">http://www.google.com/</a>')<br>
    53. 

  53. &nbsp;<br>
    54. 

  54. &nbsp;&nbsp;&nbsp;&nbsp;#&nbsp;Evaluates&nbsp;1+1&nbsp;in&nbsp;the&nbsp;tab's&nbsp;JavaScript&nbsp;context.<br>
    55. 

  55. &nbsp;&nbsp;&nbsp;&nbsp;tab.Evaluate('1+1')<br>&nbsp;</tt></td></tr>
    56. 

  56. <tr><td>&nbsp;</td>
    57. 

  57. <td width="100%"><dl><dt>Method resolution order:</dt>
    58. 

  58. <dd><a href="telemetry.internal.browser.tab.html#Tab">Tab</a></dd>
    59. 

  59. <dd><a href="telemetry.internal.browser.web_contents.html#WebContents">telemetry.internal.browser.web_contents.WebContents</a></dd>
    60. 

  60. <dd><a href="__builtin__.html#object">__builtin__.object</a></dd>
    61. 

  61. </dl>
    62. 

  62. <hr>
    63. 

  63. Methods defined here:<br>
    64. 

  64. <dl><dt><a name="Tab-Activate"><strong>Activate</strong></a>(self)</dt><dd><tt>Brings&nbsp;this&nbsp;tab&nbsp;to&nbsp;the&nbsp;foreground&nbsp;asynchronously.<br>
    65. 

  65. &nbsp;<br>
    66. 

  66. Not&nbsp;all&nbsp;browsers&nbsp;or&nbsp;browser&nbsp;versions&nbsp;support&nbsp;this&nbsp;method.<br>
    67. 

  67. Be&nbsp;sure&nbsp;to&nbsp;check&nbsp;browser.supports_tab_control.<br>
    68. 

  68. &nbsp;<br>
    69. 

  69. Please&nbsp;note:&nbsp;this&nbsp;is&nbsp;asynchronous.&nbsp;There&nbsp;is&nbsp;a&nbsp;delay&nbsp;between&nbsp;this&nbsp;call<br>
    70. 

  70. and&nbsp;the&nbsp;page's&nbsp;documentVisibilityState&nbsp;becoming&nbsp;'visible',&nbsp;and&nbsp;yet&nbsp;more<br>
    71. 

  71. delay&nbsp;until&nbsp;the&nbsp;actual&nbsp;tab&nbsp;is&nbsp;visible&nbsp;to&nbsp;the&nbsp;user.&nbsp;None&nbsp;of&nbsp;these&nbsp;delays<br>
    72. 

  72. are&nbsp;included&nbsp;in&nbsp;this&nbsp;call.<br>
    73. 

  73. &nbsp;<br>
    74. 

  74. Raises:<br>
    75. 

  75. &nbsp;&nbsp;devtools_http.DevToolsClientConnectionError<br>
    76. 

  76. &nbsp;&nbsp;devtools_client_backend.TabNotFoundError<br>
    77. 

  77. &nbsp;&nbsp;tab_list_backend.TabUnexpectedResponseException</tt></dd></dl>
    78. 

  78. 

  79. <dl><dt><a name="Tab-ClearCache"><strong>ClearCache</strong></a>(self, force)</dt><dd><tt>Clears&nbsp;the&nbsp;browser's&nbsp;networking&nbsp;related&nbsp;disk,&nbsp;memory&nbsp;and&nbsp;other&nbsp;caches.<br>
    80. 

  80. &nbsp;<br>
    81. 

  81. Args:<br>
    82. 

  82. &nbsp;&nbsp;force:&nbsp;Iff&nbsp;true,&nbsp;navigates&nbsp;to&nbsp;about:blank&nbsp;which&nbsp;destroys&nbsp;the&nbsp;previous<br>
    83. 

  83. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;renderer,&nbsp;ensuring&nbsp;that&nbsp;even&nbsp;"live"&nbsp;resources&nbsp;in&nbsp;the&nbsp;memory&nbsp;cache&nbsp;are<br>
    84. 

  84. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cleared.<br>
    85. 

  85. &nbsp;<br>
    86. 

  86. Raises:<br>
    87. 

  87. &nbsp;&nbsp;exceptions.EvaluateException<br>
    88. 

  88. &nbsp;&nbsp;exceptions.WebSocketDisconnected<br>
    89. 

  89. &nbsp;&nbsp;exceptions.TimeoutException<br>
    90. 

  90. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException<br>
    91. 

  91. &nbsp;&nbsp;errors.DeviceUnresponsiveError</tt></dd></dl>
    92. 

  92. 

  93. <dl><dt><a name="Tab-ClearHighlight"><strong>ClearHighlight</strong></a>(self, color)</dt><dd><tt>Clears&nbsp;a&nbsp;highlight&nbsp;of&nbsp;the&nbsp;given&nbsp;bitmap.RgbaColor.<br>
    94. 

  94. &nbsp;<br>
    95. 

  95. Raises:<br>
    96. 

  96. &nbsp;&nbsp;exceptions.EvaluateException<br>
    97. 

  97. &nbsp;&nbsp;exceptions.WebSocketDisconnected<br>
    98. 

  98. &nbsp;&nbsp;exceptions.TimeoutException<br>
    99. 

  99. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException</tt></dd></dl>
    100. 

  100. 

  101. <dl><dt><a name="Tab-Close"><strong>Close</strong></a>(self)</dt><dd><tt>Closes&nbsp;this&nbsp;tab.<br>
    102. 

  102. &nbsp;<br>
    103. 

  103. Not&nbsp;all&nbsp;browsers&nbsp;or&nbsp;browser&nbsp;versions&nbsp;support&nbsp;this&nbsp;method.<br>
    104. 

  104. Be&nbsp;sure&nbsp;to&nbsp;check&nbsp;browser.supports_tab_control.<br>
    105. 

  105. &nbsp;<br>
    106. 

  106. Raises:<br>
    107. 

  107. &nbsp;&nbsp;devtools_http.DevToolsClientConnectionError<br>
    108. 

  108. &nbsp;&nbsp;devtools_client_backend.TabNotFoundError<br>
    109. 

  109. &nbsp;&nbsp;tab_list_backend.TabUnexpectedResponseException<br>
    110. 

  110. &nbsp;&nbsp;exceptions.TimeoutException</tt></dd></dl>
    111. 

  111. 

  112. <dl><dt><a name="Tab-CollectGarbage"><strong>CollectGarbage</strong></a>(self)</dt><dd><tt>Forces&nbsp;a&nbsp;garbage&nbsp;collection.<br>
    113. 

  113. &nbsp;<br>
    114. 

  114. Raises:<br>
    115. 

  115. &nbsp;&nbsp;exceptions.WebSocketDisconnected<br>
    116. 

  116. &nbsp;&nbsp;exceptions.TimeoutException<br>
    117. 

  117. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException</tt></dd></dl>
    118. 

  118. 

  119. <dl><dt><a name="Tab-GetCookieByName"><strong>GetCookieByName</strong></a>(self, name, timeout<font color="#909090">=60</font>)</dt><dd><tt>Returns&nbsp;the&nbsp;value&nbsp;of&nbsp;the&nbsp;cookie&nbsp;by&nbsp;the&nbsp;given&nbsp;|name|.<br>
    120. 

  120. &nbsp;<br>
    121. 

  121. Raises:<br>
    122. 

  122. &nbsp;&nbsp;exceptions.WebSocketDisconnected<br>
    123. 

  123. &nbsp;&nbsp;exceptions.TimeoutException<br>
    124. 

  124. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException</tt></dd></dl>
    125. 

  125. 

  126. <dl><dt><a name="Tab-Highlight"><strong>Highlight</strong></a>(self, color)</dt><dd><tt>Synchronously&nbsp;highlights&nbsp;entire&nbsp;tab&nbsp;contents&nbsp;with&nbsp;the&nbsp;given&nbsp;RgbaColor.<br>
    127. 

  127. &nbsp;<br>
    128. 

  128. TODO(tonyg):&nbsp;It&nbsp;is&nbsp;possible&nbsp;that&nbsp;the&nbsp;z-index&nbsp;hack&nbsp;here&nbsp;might&nbsp;not&nbsp;work&nbsp;for<br>
    129. 

  129. all&nbsp;pages.&nbsp;If&nbsp;this&nbsp;happens,&nbsp;DevTools&nbsp;also&nbsp;provides&nbsp;a&nbsp;method&nbsp;for&nbsp;this.<br>
    130. 

  130. &nbsp;<br>
    131. 

  131. Raises:<br>
    132. 

  132. &nbsp;&nbsp;exceptions.EvaluateException<br>
    133. 

  133. &nbsp;&nbsp;exceptions.WebSocketDisconnected<br>
    134. 

  134. &nbsp;&nbsp;exceptions.TimeoutException<br>
    135. 

  135. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException</tt></dd></dl>
    136. 

  136. 

  137. <dl><dt><a name="Tab-Screenshot"><strong>Screenshot</strong></a>(self, timeout<font color="#909090">=60</font>)</dt><dd><tt>Capture&nbsp;a&nbsp;screenshot&nbsp;of&nbsp;the&nbsp;tab's&nbsp;contents.<br>
    138. 

  138. &nbsp;<br>
    139. 

  139. Returns:<br>
    140. 

  140. &nbsp;&nbsp;A&nbsp;telemetry.core.Bitmap.<br>
    141. 

  141. Raises:<br>
    142. 

  142. &nbsp;&nbsp;exceptions.WebSocketDisconnected<br>
    143. 

  143. &nbsp;&nbsp;exceptions.TimeoutException<br>
    144. 

  144. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException</tt></dd></dl>
    145. 

  145. 

  146. <dl><dt><a name="Tab-StartVideoCapture"><strong>StartVideoCapture</strong></a>(self, min_bitrate_mbps, highlight_bitmap<font color="#909090">=RgbaColor(r=222, g=100, b=13, a=255)</font>)</dt><dd><tt>Starts&nbsp;capturing&nbsp;video&nbsp;of&nbsp;the&nbsp;tab's&nbsp;contents.<br>
    147. 

  147. &nbsp;<br>
    148. 

  148. This&nbsp;works&nbsp;by&nbsp;flashing&nbsp;the&nbsp;entire&nbsp;tab&nbsp;contents&nbsp;to&nbsp;a&nbsp;arbitrary&nbsp;color&nbsp;and&nbsp;then<br>
    149. 

  149. starting&nbsp;video&nbsp;recording.&nbsp;When&nbsp;the&nbsp;frames&nbsp;are&nbsp;processed,&nbsp;we&nbsp;can&nbsp;look&nbsp;for<br>
    150. 

  150. that&nbsp;flash&nbsp;as&nbsp;the&nbsp;content&nbsp;bounds.<br>
    151. 

  151. &nbsp;<br>
    152. 

  152. Args:<br>
    153. 

  153. &nbsp;&nbsp;min_bitrate_mbps:&nbsp;The&nbsp;minimum&nbsp;caputre&nbsp;bitrate&nbsp;in&nbsp;MegaBits&nbsp;Per&nbsp;Second.<br>
    154. 

  154. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The&nbsp;platform&nbsp;is&nbsp;free&nbsp;to&nbsp;deliver&nbsp;a&nbsp;higher&nbsp;bitrate&nbsp;if&nbsp;it&nbsp;can&nbsp;do&nbsp;so<br>
    155. 

  155. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;without&nbsp;increasing&nbsp;overhead.<br>
    156. 

  156. &nbsp;<br>
    157. 

  157. Raises:<br>
    158. 

  158. &nbsp;&nbsp;exceptions.EvaluateException<br>
    159. 

  159. &nbsp;&nbsp;exceptions.WebSocketDisconnected<br>
    160. 

  160. &nbsp;&nbsp;exceptions.TimeoutException<br>
    161. 

  161. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException<br>
    162. 

  162. &nbsp;&nbsp;ValueError:&nbsp;If&nbsp;the&nbsp;required&nbsp;|min_bitrate_mbps|&nbsp;can't&nbsp;be&nbsp;achieved.</tt></dd></dl>
    163. 

  163. 

  164. <dl><dt><a name="Tab-StopVideoCapture"><strong>StopVideoCapture</strong></a>(self)</dt><dd><tt>Stops&nbsp;recording&nbsp;video&nbsp;of&nbsp;the&nbsp;tab's&nbsp;contents.<br>
    165. 

  165. &nbsp;<br>
    166. 

  166. This&nbsp;looks&nbsp;for&nbsp;the&nbsp;initial&nbsp;color&nbsp;flash&nbsp;in&nbsp;the&nbsp;first&nbsp;frame&nbsp;to&nbsp;establish&nbsp;the<br>
    167. 

  167. tab&nbsp;content&nbsp;boundaries&nbsp;and&nbsp;then&nbsp;omits&nbsp;all&nbsp;frames&nbsp;displaying&nbsp;the&nbsp;flash.<br>
    168. 

  168. &nbsp;<br>
    169. 

  169. Returns:<br>
    170. 

  170. &nbsp;&nbsp;video:&nbsp;A&nbsp;video&nbsp;object&nbsp;which&nbsp;is&nbsp;a&nbsp;telemetry.core.Video</tt></dd></dl>
    171. 

  171. 

  172. <dl><dt><a name="Tab-__init__"><strong>__init__</strong></a>(self, inspector_backend, tab_list_backend, browser)</dt></dl>
    173. 

  173. 

  174. <hr>
    175. 

  175. Data descriptors defined here:<br>
    176. 

  176. <dl><dt><strong>browser</strong></dt>
    177. 

  177. <dd><tt>The&nbsp;browser&nbsp;in&nbsp;which&nbsp;this&nbsp;tab&nbsp;resides.</tt></dd>
    178. 

  178. </dl>
    179. 

  179. <dl><dt><strong>dom_stats</strong></dt>
    180. 

  180. <dd><tt>A&nbsp;dictionary&nbsp;populated&nbsp;with&nbsp;measured&nbsp;DOM&nbsp;statistics.<br>
    181. 

  181. &nbsp;<br>
    182. 

  182. Currently&nbsp;this&nbsp;dictionary&nbsp;contains:<br>
    183. 

  183. {<br>
    184. 

  184. &nbsp;&nbsp;'document_count':&nbsp;integer,<br>
    185. 

  185. &nbsp;&nbsp;'node_count':&nbsp;integer,<br>
    186. 

  186. &nbsp;&nbsp;'event_listener_count':&nbsp;integer<br>
    187. 

  187. }<br>
    188. 

  188. &nbsp;<br>
    189. 

  189. Raises:<br>
    190. 

  190. &nbsp;&nbsp;inspector_memory.InspectorMemoryException<br>
    191. 

  191. &nbsp;&nbsp;exceptions.TimeoutException<br>
    192. 

  192. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException</tt></dd>
    193. 

  193. </dl>
    194. 

  194. <dl><dt><strong>is_video_capture_running</strong></dt>
    195. 

  195. </dl>
    196. 

  196. <dl><dt><strong>screenshot_supported</strong></dt>
    197. 

  197. <dd><tt>True&nbsp;if&nbsp;the&nbsp;browser&nbsp;instance&nbsp;is&nbsp;capable&nbsp;of&nbsp;capturing&nbsp;screenshots.</tt></dd>
    198. 

  198. </dl>
    199. 

  199. <dl><dt><strong>url</strong></dt>
    200. 

  200. <dd><tt>Returns&nbsp;the&nbsp;URL&nbsp;of&nbsp;the&nbsp;tab,&nbsp;as&nbsp;reported&nbsp;by&nbsp;devtools.<br>
    201. 

  201. &nbsp;<br>
    202. 

  202. Raises:<br>
    203. 

  203. &nbsp;&nbsp;devtools_http.DevToolsClientConnectionError</tt></dd>
    204. 

  204. </dl>
    205. 

  205. <dl><dt><strong>video_capture_supported</strong></dt>
    206. 

  206. <dd><tt>True&nbsp;if&nbsp;the&nbsp;browser&nbsp;instance&nbsp;is&nbsp;capable&nbsp;of&nbsp;capturing&nbsp;video.</tt></dd>
    207. 

  207. </dl>
    208. 

  208. <hr>
    209. 

  209. Methods inherited from <a href="telemetry.internal.browser.web_contents.html#WebContents">telemetry.internal.browser.web_contents.WebContents</a>:<br>
    210. 

  210. <dl><dt><a name="Tab-CloseConnections"><strong>CloseConnections</strong></a>(self)</dt><dd><tt>Closes&nbsp;all&nbsp;TCP&nbsp;sockets&nbsp;held&nbsp;open&nbsp;by&nbsp;the&nbsp;browser.<br>
    211. 

  211. &nbsp;<br>
    212. 

  212. Raises:<br>
    213. 

  213. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException&nbsp;if&nbsp;the&nbsp;tab&nbsp;is&nbsp;not&nbsp;alive.</tt></dd></dl>
    214. 

  214. 

  215. <dl><dt><a name="Tab-EnableAllContexts"><strong>EnableAllContexts</strong></a>(self)</dt><dd><tt>Enable&nbsp;all&nbsp;contexts&nbsp;in&nbsp;a&nbsp;page.&nbsp;Returns&nbsp;the&nbsp;number&nbsp;of&nbsp;available&nbsp;contexts.<br>
    216. 

  216. &nbsp;<br>
    217. 

  217. Raises:<br>
    218. 

  218. &nbsp;&nbsp;exceptions.WebSocketDisconnected<br>
    219. 

  219. &nbsp;&nbsp;exceptions.TimeoutException<br>
    220. 

  220. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException</tt></dd></dl>
    221. 

  221. 

  222. <dl><dt><a name="Tab-EvaluateJavaScript"><strong>EvaluateJavaScript</strong></a>(self, expr, timeout<font color="#909090">=90</font>)</dt><dd><tt>Evalutes&nbsp;expr&nbsp;in&nbsp;JavaScript&nbsp;and&nbsp;returns&nbsp;the&nbsp;JSONized&nbsp;result.<br>
    223. 

  223. &nbsp;<br>
    224. 

  224. Consider&nbsp;using&nbsp;ExecuteJavaScript&nbsp;for&nbsp;cases&nbsp;where&nbsp;the&nbsp;result&nbsp;of&nbsp;the<br>
    225. 

  225. expression&nbsp;is&nbsp;not&nbsp;needed.<br>
    226. 

  226. &nbsp;<br>
    227. 

  227. If&nbsp;evaluation&nbsp;throws&nbsp;in&nbsp;JavaScript,&nbsp;a&nbsp;Python&nbsp;EvaluateException&nbsp;will<br>
    228. 

  228. be&nbsp;raised.<br>
    229. 

  229. &nbsp;<br>
    230. 

  230. If&nbsp;the&nbsp;result&nbsp;of&nbsp;the&nbsp;evaluation&nbsp;cannot&nbsp;be&nbsp;JSONized,&nbsp;then&nbsp;an<br>
    231. 

  231. EvaluationException&nbsp;will&nbsp;be&nbsp;raised.<br>
    232. 

  232. &nbsp;<br>
    233. 

  233. Raises:<br>
    234. 

  234. &nbsp;&nbsp;exceptions.Error:&nbsp;See&nbsp;<a href="#Tab-EvaluateJavaScriptInContext">EvaluateJavaScriptInContext</a>()&nbsp;for&nbsp;a&nbsp;detailed&nbsp;list<br>
    235. 

  235. &nbsp;&nbsp;of&nbsp;possible&nbsp;exceptions.</tt></dd></dl>
    236. 

  236. 

  237. <dl><dt><a name="Tab-EvaluateJavaScriptInContext"><strong>EvaluateJavaScriptInContext</strong></a>(self, expr, context_id, timeout<font color="#909090">=90</font>)</dt><dd><tt>Similar&nbsp;to&nbsp;ExecuteJavaScript,&nbsp;except&nbsp;context_id&nbsp;can&nbsp;refer&nbsp;to&nbsp;an&nbsp;iframe.<br>
    238. 

  238. The&nbsp;main&nbsp;page&nbsp;has&nbsp;context_id=1,&nbsp;the&nbsp;first&nbsp;iframe&nbsp;context_id=2,&nbsp;etc.<br>
    239. 

  239. &nbsp;<br>
    240. 

  240. Raises:<br>
    241. 

  241. &nbsp;&nbsp;exceptions.EvaluateException<br>
    242. 

  242. &nbsp;&nbsp;exceptions.WebSocketDisconnected<br>
    243. 

  243. &nbsp;&nbsp;exceptions.TimeoutException<br>
    244. 

  244. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException</tt></dd></dl>
    245. 

  245. 

  246. <dl><dt><a name="Tab-ExecuteJavaScript"><strong>ExecuteJavaScript</strong></a>(self, statement, timeout<font color="#909090">=90</font>)</dt><dd><tt>Executes&nbsp;statement&nbsp;in&nbsp;JavaScript.&nbsp;Does&nbsp;not&nbsp;return&nbsp;the&nbsp;result.<br>
    247. 

  247. &nbsp;<br>
    248. 

  248. If&nbsp;the&nbsp;statement&nbsp;failed&nbsp;to&nbsp;evaluate,&nbsp;EvaluateException&nbsp;will&nbsp;be&nbsp;raised.<br>
    249. 

  249. &nbsp;<br>
    250. 

  250. Raises:<br>
    251. 

  251. &nbsp;&nbsp;exceptions.Error:&nbsp;See&nbsp;<a href="#Tab-ExecuteJavaScriptInContext">ExecuteJavaScriptInContext</a>()&nbsp;for&nbsp;a&nbsp;detailed&nbsp;list&nbsp;of<br>
    252. 

  252. &nbsp;&nbsp;possible&nbsp;exceptions.</tt></dd></dl>
    253. 

  253. 

  254. <dl><dt><a name="Tab-ExecuteJavaScriptInContext"><strong>ExecuteJavaScriptInContext</strong></a>(self, expr, context_id, timeout<font color="#909090">=90</font>)</dt><dd><tt>Similar&nbsp;to&nbsp;ExecuteJavaScript,&nbsp;except&nbsp;context_id&nbsp;can&nbsp;refer&nbsp;to&nbsp;an&nbsp;iframe.<br>
    255. 

  255. The&nbsp;main&nbsp;page&nbsp;has&nbsp;context_id=1,&nbsp;the&nbsp;first&nbsp;iframe&nbsp;context_id=2,&nbsp;etc.<br>
    256. 

  256. &nbsp;<br>
    257. 

  257. Raises:<br>
    258. 

  258. &nbsp;&nbsp;exceptions.EvaluateException<br>
    259. 

  259. &nbsp;&nbsp;exceptions.WebSocketDisconnected<br>
    260. 

  260. &nbsp;&nbsp;exceptions.TimeoutException<br>
    261. 

  261. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException</tt></dd></dl>
    262. 

  262. 

  263. <dl><dt><a name="Tab-GetUrl"><strong>GetUrl</strong></a>(self)</dt><dd><tt>Returns&nbsp;the&nbsp;URL&nbsp;to&nbsp;which&nbsp;the&nbsp;<a href="telemetry.internal.browser.web_contents.html#WebContents">WebContents</a>&nbsp;is&nbsp;connected.<br>
    264. 

  264. &nbsp;<br>
    265. 

  265. Raises:<br>
    266. 

  266. &nbsp;&nbsp;exceptions.Error:&nbsp;If&nbsp;there&nbsp;is&nbsp;an&nbsp;error&nbsp;in&nbsp;inspector&nbsp;backend&nbsp;connection.</tt></dd></dl>
    267. 

  267. 

  268. <dl><dt><a name="Tab-GetWebviewContexts"><strong>GetWebviewContexts</strong></a>(self)</dt><dd><tt>Returns&nbsp;a&nbsp;list&nbsp;of&nbsp;webview&nbsp;contexts&nbsp;within&nbsp;the&nbsp;current&nbsp;inspector&nbsp;backend.<br>
    269. 

  269. &nbsp;<br>
    270. 

  270. Returns:<br>
    271. 

  271. &nbsp;&nbsp;A&nbsp;list&nbsp;of&nbsp;<a href="telemetry.internal.browser.web_contents.html#WebContents">WebContents</a>&nbsp;objects&nbsp;representing&nbsp;the&nbsp;webview&nbsp;contexts.<br>
    272. 

  272. &nbsp;<br>
    273. 

  273. Raises:<br>
    274. 

  274. &nbsp;&nbsp;exceptions.Error:&nbsp;If&nbsp;there&nbsp;is&nbsp;an&nbsp;error&nbsp;in&nbsp;inspector&nbsp;backend&nbsp;connection.</tt></dd></dl>
    275. 

  275. 

  276. <dl><dt><a name="Tab-HasReachedQuiescence"><strong>HasReachedQuiescence</strong></a>(self)</dt><dd><tt>Determine&nbsp;whether&nbsp;the&nbsp;page&nbsp;has&nbsp;reached&nbsp;quiescence&nbsp;after&nbsp;loading.<br>
    277. 

  277. &nbsp;<br>
    278. 

  278. Returns:<br>
    279. 

  279. &nbsp;&nbsp;True&nbsp;if&nbsp;2&nbsp;seconds&nbsp;have&nbsp;passed&nbsp;since&nbsp;last&nbsp;resource&nbsp;received,&nbsp;false<br>
    280. 

  280. &nbsp;&nbsp;otherwise.<br>
    281. 

  281. Raises:<br>
    282. 

  282. &nbsp;&nbsp;exceptions.Error:&nbsp;See&nbsp;<a href="#Tab-EvaluateJavaScript">EvaluateJavaScript</a>()&nbsp;for&nbsp;a&nbsp;detailed&nbsp;list&nbsp;of<br>
    283. 

  283. &nbsp;&nbsp;possible&nbsp;exceptions.</tt></dd></dl>
    284. 

  284. 

  285. <dl><dt><a name="Tab-IsAlive"><strong>IsAlive</strong></a>(self)</dt><dd><tt>Whether&nbsp;the&nbsp;<a href="telemetry.internal.browser.web_contents.html#WebContents">WebContents</a>&nbsp;is&nbsp;still&nbsp;operating&nbsp;normally.<br>
    286. 

  286. &nbsp;<br>
    287. 

  287. Since&nbsp;<a href="telemetry.internal.browser.web_contents.html#WebContents">WebContents</a>&nbsp;function&nbsp;asynchronously,&nbsp;this&nbsp;method&nbsp;does&nbsp;not&nbsp;guarantee<br>
    288. 

  288. that&nbsp;the&nbsp;<a href="telemetry.internal.browser.web_contents.html#WebContents">WebContents</a>&nbsp;will&nbsp;still&nbsp;be&nbsp;alive&nbsp;at&nbsp;any&nbsp;point&nbsp;in&nbsp;the&nbsp;future.<br>
    289. 

  289. &nbsp;<br>
    290. 

  290. Returns:<br>
    291. 

  291. &nbsp;&nbsp;A&nbsp;boolean&nbsp;indicating&nbsp;whether&nbsp;the&nbsp;<a href="telemetry.internal.browser.web_contents.html#WebContents">WebContents</a>&nbsp;is&nbsp;opearting&nbsp;normally.</tt></dd></dl>
    292. 

  292. 

  293. <dl><dt><a name="Tab-Navigate"><strong>Navigate</strong></a>(self, url, script_to_evaluate_on_commit<font color="#909090">=None</font>, timeout<font color="#909090">=90</font>)</dt><dd><tt>Navigates&nbsp;to&nbsp;url.<br>
    294. 

  294. &nbsp;<br>
    295. 

  295. If&nbsp;|script_to_evaluate_on_commit|&nbsp;is&nbsp;given,&nbsp;the&nbsp;script&nbsp;source&nbsp;string&nbsp;will&nbsp;be<br>
    296. 

  296. evaluated&nbsp;when&nbsp;the&nbsp;navigation&nbsp;is&nbsp;committed.&nbsp;This&nbsp;is&nbsp;after&nbsp;the&nbsp;context&nbsp;of<br>
    297. 

  297. the&nbsp;page&nbsp;exists,&nbsp;but&nbsp;before&nbsp;any&nbsp;script&nbsp;on&nbsp;the&nbsp;page&nbsp;itself&nbsp;has&nbsp;executed.<br>
    298. 

  298. &nbsp;<br>
    299. 

  299. Raises:<br>
    300. 

  300. &nbsp;&nbsp;exceptions.TimeoutException<br>
    301. 

  301. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException</tt></dd></dl>
    302. 

  302. 

  303. <dl><dt><a name="Tab-StartTimelineRecording"><strong>StartTimelineRecording</strong></a>(self)</dt><dd><tt>Starts&nbsp;timeline&nbsp;recording.<br>
    304. 

  304. &nbsp;<br>
    305. 

  305. Raises:<br>
    306. 

  306. &nbsp;&nbsp;exceptions.TimeoutException<br>
    307. 

  307. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException</tt></dd></dl>
    308. 

  308. 

  309. <dl><dt><a name="Tab-StopTimelineRecording"><strong>StopTimelineRecording</strong></a>(self)</dt><dd><tt>Stops&nbsp;timeline&nbsp;recording.<br>
    310. 

  310. &nbsp;<br>
    311. 

  311. Raises:<br>
    312. 

  312. &nbsp;&nbsp;exceptions.TimeoutException<br>
    313. 

  313. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException</tt></dd></dl>
    314. 

  314. 

  315. <dl><dt><a name="Tab-SynthesizeScrollGesture"><strong>SynthesizeScrollGesture</strong></a>(self, x<font color="#909090">=100</font>, y<font color="#909090">=800</font>, xDistance<font color="#909090">=0</font>, yDistance<font color="#909090">=-500</font>, xOverscroll<font color="#909090">=None</font>, yOverscroll<font color="#909090">=None</font>, preventFling<font color="#909090">=True</font>, speed<font color="#909090">=None</font>, gestureSourceType<font color="#909090">=None</font>, repeatCount<font color="#909090">=None</font>, repeatDelayMs<font color="#909090">=None</font>, interactionMarkerName<font color="#909090">=None</font>)</dt><dd><tt>Runs&nbsp;an&nbsp;inspector&nbsp;command&nbsp;that&nbsp;causes&nbsp;a&nbsp;repeatable&nbsp;browser&nbsp;driven&nbsp;scroll.<br>
    316. 

  316. &nbsp;<br>
    317. 

  317. Args:<br>
    318. 

  318. &nbsp;&nbsp;x:&nbsp;X&nbsp;coordinate&nbsp;of&nbsp;the&nbsp;start&nbsp;of&nbsp;the&nbsp;gesture&nbsp;in&nbsp;CSS&nbsp;pixels.<br>
    319. 

  319. &nbsp;&nbsp;y:&nbsp;Y&nbsp;coordinate&nbsp;of&nbsp;the&nbsp;start&nbsp;of&nbsp;the&nbsp;gesture&nbsp;in&nbsp;CSS&nbsp;pixels.<br>
    320. 

  320. &nbsp;&nbsp;xDistance:&nbsp;Distance&nbsp;to&nbsp;scroll&nbsp;along&nbsp;the&nbsp;X&nbsp;axis&nbsp;(positive&nbsp;to&nbsp;scroll&nbsp;left).<br>
    321. 

  321. &nbsp;&nbsp;yDistance:&nbsp;Ddistance&nbsp;to&nbsp;scroll&nbsp;along&nbsp;the&nbsp;Y&nbsp;axis&nbsp;(positive&nbsp;to&nbsp;scroll&nbsp;up).<br>
    322. 

  322. &nbsp;&nbsp;xOverscroll:&nbsp;Number&nbsp;of&nbsp;additional&nbsp;pixels&nbsp;to&nbsp;scroll&nbsp;back&nbsp;along&nbsp;the&nbsp;X&nbsp;axis.<br>
    323. 

  323. &nbsp;&nbsp;xOverscroll:&nbsp;Number&nbsp;of&nbsp;additional&nbsp;pixels&nbsp;to&nbsp;scroll&nbsp;back&nbsp;along&nbsp;the&nbsp;Y&nbsp;axis.<br>
    324. 

  324. &nbsp;&nbsp;preventFling:&nbsp;Prevents&nbsp;a&nbsp;fling&nbsp;gesture.<br>
    325. 

  325. &nbsp;&nbsp;speed:&nbsp;Swipe&nbsp;speed&nbsp;in&nbsp;pixels&nbsp;per&nbsp;second.<br>
    326. 

  326. &nbsp;&nbsp;gestureSourceType:&nbsp;Which&nbsp;type&nbsp;of&nbsp;input&nbsp;events&nbsp;to&nbsp;be&nbsp;generated.<br>
    327. 

  327. &nbsp;&nbsp;repeatCount:&nbsp;Number&nbsp;of&nbsp;additional&nbsp;repeats&nbsp;beyond&nbsp;the&nbsp;first&nbsp;scroll.<br>
    328. 

  328. &nbsp;&nbsp;repeatDelayMs:&nbsp;Number&nbsp;of&nbsp;milliseconds&nbsp;delay&nbsp;between&nbsp;each&nbsp;repeat.<br>
    329. 

  329. &nbsp;&nbsp;interactionMarkerName:&nbsp;The&nbsp;name&nbsp;of&nbsp;the&nbsp;interaction&nbsp;markers&nbsp;to&nbsp;generate.<br>
    330. 

  330. &nbsp;<br>
    331. 

  331. Raises:<br>
    332. 

  332. &nbsp;&nbsp;exceptions.TimeoutException<br>
    333. 

  333. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException</tt></dd></dl>
    334. 

  334. 

  335. <dl><dt><a name="Tab-WaitForDocumentReadyStateToBeComplete"><strong>WaitForDocumentReadyStateToBeComplete</strong></a>(self, timeout<font color="#909090">=90</font>)</dt><dd><tt>Waits&nbsp;for&nbsp;the&nbsp;document&nbsp;to&nbsp;finish&nbsp;loading.<br>
    336. 

  336. &nbsp;<br>
    337. 

  337. Raises:<br>
    338. 

  338. &nbsp;&nbsp;exceptions.Error:&nbsp;See&nbsp;<a href="#Tab-WaitForJavaScriptExpression">WaitForJavaScriptExpression</a>()&nbsp;for&nbsp;a&nbsp;detailed&nbsp;list<br>
    339. 

  339. &nbsp;&nbsp;of&nbsp;possible&nbsp;exceptions.</tt></dd></dl>
    340. 

  340. 

  341. <dl><dt><a name="Tab-WaitForDocumentReadyStateToBeInteractiveOrBetter"><strong>WaitForDocumentReadyStateToBeInteractiveOrBetter</strong></a>(self, timeout<font color="#909090">=90</font>)</dt><dd><tt>Waits&nbsp;for&nbsp;the&nbsp;document&nbsp;to&nbsp;be&nbsp;interactive.<br>
    342. 

  342. &nbsp;<br>
    343. 

  343. Raises:<br>
    344. 

  344. &nbsp;&nbsp;exceptions.Error:&nbsp;See&nbsp;<a href="#Tab-WaitForJavaScriptExpression">WaitForJavaScriptExpression</a>()&nbsp;for&nbsp;a&nbsp;detailed&nbsp;list<br>
    345. 

  345. &nbsp;&nbsp;of&nbsp;possible&nbsp;exceptions.</tt></dd></dl>
    346. 

  346. 

  347. <dl><dt><a name="Tab-WaitForJavaScriptExpression"><strong>WaitForJavaScriptExpression</strong></a>(self, expr, timeout, dump_page_state_on_timeout<font color="#909090">=True</font>)</dt><dd><tt>Waits&nbsp;for&nbsp;the&nbsp;given&nbsp;JavaScript&nbsp;expression&nbsp;to&nbsp;be&nbsp;True.<br>
    348. 

  348. &nbsp;<br>
    349. 

  349. This&nbsp;method&nbsp;is&nbsp;robust&nbsp;against&nbsp;any&nbsp;given&nbsp;Evaluation&nbsp;timing&nbsp;out.<br>
    350. 

  350. &nbsp;<br>
    351. 

  351. Args:<br>
    352. 

  352. &nbsp;&nbsp;expr:&nbsp;The&nbsp;expression&nbsp;to&nbsp;evaluate.<br>
    353. 

  353. &nbsp;&nbsp;timeout:&nbsp;The&nbsp;number&nbsp;of&nbsp;seconds&nbsp;to&nbsp;wait&nbsp;for&nbsp;the&nbsp;expression&nbsp;to&nbsp;be&nbsp;True.<br>
    354. 

  354. &nbsp;&nbsp;dump_page_state_on_timeout:&nbsp;Whether&nbsp;to&nbsp;provide&nbsp;additional&nbsp;information&nbsp;on<br>
    355. 

  355. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the&nbsp;page&nbsp;state&nbsp;if&nbsp;a&nbsp;TimeoutException&nbsp;is&nbsp;thrown.<br>
    356. 

  356. &nbsp;<br>
    357. 

  357. Raises:<br>
    358. 

  358. &nbsp;&nbsp;exceptions.TimeoutException:&nbsp;On&nbsp;a&nbsp;timeout.<br>
    359. 

  359. &nbsp;&nbsp;exceptions.Error:&nbsp;See&nbsp;<a href="#Tab-EvaluateJavaScript">EvaluateJavaScript</a>()&nbsp;for&nbsp;a&nbsp;detailed&nbsp;list&nbsp;of<br>
    360. 

  360. &nbsp;&nbsp;possible&nbsp;exceptions.</tt></dd></dl>
    361. 

  361. 

  362. <dl><dt><a name="Tab-WaitForNavigate"><strong>WaitForNavigate</strong></a>(self, timeout<font color="#909090">=90</font>)</dt><dd><tt>Waits&nbsp;for&nbsp;the&nbsp;navigation&nbsp;to&nbsp;complete.<br>
    363. 

  363. &nbsp;<br>
    364. 

  364. The&nbsp;current&nbsp;page&nbsp;is&nbsp;expect&nbsp;to&nbsp;be&nbsp;in&nbsp;a&nbsp;navigation.<br>
    365. 

  365. This&nbsp;function&nbsp;returns&nbsp;when&nbsp;the&nbsp;navigation&nbsp;is&nbsp;complete&nbsp;or&nbsp;when<br>
    366. 

  366. the&nbsp;timeout&nbsp;has&nbsp;been&nbsp;exceeded.<br>
    367. 

  367. &nbsp;<br>
    368. 

  368. Raises:<br>
    369. 

  369. &nbsp;&nbsp;exceptions.TimeoutException<br>
    370. 

  370. &nbsp;&nbsp;exceptions.DevtoolsTargetCrashException</tt></dd></dl>
    371. 

  371. 

  372. <hr>
    373. 

  373. Data descriptors inherited from <a href="telemetry.internal.browser.web_contents.html#WebContents">telemetry.internal.browser.web_contents.WebContents</a>:<br>
    374. 

  374. <dl><dt><strong>__dict__</strong></dt>
    375. 

  375. <dd><tt>dictionary&nbsp;for&nbsp;instance&nbsp;variables&nbsp;(if&nbsp;defined)</tt></dd>
    376. 

  376. </dl>
    377. 

  377. <dl><dt><strong>__weakref__</strong></dt>
    378. 

  378. <dd><tt>list&nbsp;of&nbsp;weak&nbsp;references&nbsp;to&nbsp;the&nbsp;object&nbsp;(if&nbsp;defined)</tt></dd>
    379. 

  379. </dl>
    380. 

  380. <dl><dt><strong>id</strong></dt>
    381. 

  381. <dd><tt>Return&nbsp;the&nbsp;unique&nbsp;id&nbsp;string&nbsp;for&nbsp;this&nbsp;tab&nbsp;object.</tt></dd>
    382. 

  382. </dl>
    383. 

  383. <dl><dt><strong>message_output_stream</strong></dt>
    384. 

  384. </dl>
    385. 

  385. <dl><dt><strong>timeline_model</strong></dt>
    386. 

  386. </dl>
    387. 

  387. </td></tr></table></td></tr></table><p>
    388. 

  388. <table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
    389. 

  389. <tr bgcolor="#55aa55">
    390. 

  390. <td colspan=3 valign=bottom>&nbsp;<br>
    391. 

  391. <font color="#ffffff" face="helvetica, arial"><big><strong>Data</strong></big></font></td></tr>
    392. 

  392.     
    393. 

  393. <tr><td bgcolor="#55aa55"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
    394. 

  394. <td width="100%"><strong>DEFAULT_TAB_TIMEOUT</strong> = 60</td></tr></table>
    395. 

  395. </body></html>
    396.