1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 function TimelineModelShim() { 6 tracing.TimelineModel.apply(this, arguments); 7 } 8 9 TimelineModelShim.prototype = { 10 __proto__: tracing.TimelineModel.prototype, 11 12 invokeMethod: function(methodName, args) { 13 var sendToPython = function(obj) { 14 // We use sendJSON here because domAutomationController's send() chokes on 15 // large amounts of data. Inside of send() it converts the arg to JSON and 16 // invokes sendJSON. The JSON conversion is what fails. This way works 17 // around the bad code, but note that the recieving python converts from 18 // JSON before passing it back to the pyauto test. 19 window.domAutomationController.sendJSON( 20 JSON.stringify(obj) 21 ); 22 }; 23 var result; 24 try { 25 result = this[methodName].apply(this, JSON.parse(args)); 26 } catch( e ) { 27 var ret = { 28 success: false, 29 message: 'Unspecified error', 30 }; 31 // We'll try sending the entire exception. If that doesn't work, it's ok. 32 try { 33 ret.exception = JSON.stringify(e); 34 } catch(e2) {} 35 if( typeof(e) == 'string' || e instanceof String ) { 36 ret.message = e; 37 } else { 38 if( e.stack != undefined ) ret.stack = e.stack; 39 if( e.message != undefined ) ret.message = e.message; 40 } 41 sendToPython(ret); 42 throw e; 43 } 44 sendToPython({ 45 success: true, 46 data: result 47 }); 48 } 49 }, 50 51 // This causes the PyAuto ExecuteJavascript call which executed this file to 52 // return. 53 window.domAutomationController.send(''); 54
