The Tor Browser / file comparison
comparison: dom/tests/mochitest/bugs/utils_bug260264.js
dom/tests/mochitest/bugs/utils_bug260264.js
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| -1:000000000000 | 0:e3f458b1f64a |
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| 1 /** | |
| 2 * Dispatches |handler| to |element|, as if fired in response to |event|. | |
| 3 */ | |
| 4 function send(element, event, handler) { | |
| 5 function unique_handler() { return handler.apply(this, arguments) } | |
| 6 element.addEventListener(event, unique_handler, false); | |
| 7 try { sendMouseEvent({ type: event }, element.id) } | |
| 8 finally { element.removeEventListener(event, unique_handler, false) } | |
| 9 } | |
| 10 | |
| 11 /** | |
| 12 * Because it's not nice to leave popup windows open after the tests are | |
| 13 * finished, we need a foolproof way to close some/all window.opened windows. | |
| 14 */ | |
| 15 (function(originalOpen) { | |
| 16 var wins = []; | |
| 17 (window.open = function() { | |
| 18 var win = originalOpen.apply(window, arguments); | |
| 19 if (win) | |
| 20 wins[wins.length] = win; | |
| 21 return win; | |
| 22 }).close = function(n) { | |
| 23 if (arguments.length < 1) | |
| 24 n = wins.length; | |
| 25 while (n --> 0) { | |
| 26 var win = wins.pop(); | |
| 27 if (win) win.close(); | |
| 28 else break; | |
| 29 } | |
| 30 }; | |
| 31 })(window.open); | |
| 32 | |
| 33 function _alter_helper(uri, fn) { | |
| 34 var hash_splat = uri.split("#"), | |
| 35 splat = hash_splat.shift().split("/"); | |
| 36 fn(splat); | |
| 37 hash_splat.unshift(splat.join("/")); | |
| 38 return hash_splat.join("#"); | |
| 39 } | |
| 40 | |
| 41 function alter_host(uri, host) { | |
| 42 return _alter_helper(uri, function(splat) { | |
| 43 splat.splice(2, 1, host); | |
| 44 }); | |
| 45 } | |
| 46 | |
| 47 function alter_file(uri, file) { | |
| 48 return _alter_helper(uri, function(splat) { | |
| 49 splat[splat.length - 1] = file; | |
| 50 }); | |
| 51 } | |
| 52 | |
| 53 (function() { | |
| 54 | |
| 55 var prefService = SpecialPowers.Cc["@mozilla.org/preferences-service;1"] | |
| 56 .getService(SpecialPowers.Ci.nsIPrefService), | |
| 57 pm = SpecialPowers.Cc["@mozilla.org/permissionmanager;1"] | |
| 58 .getService(SpecialPowers.Ci.nsIPermissionManager), | |
| 59 ioService = SpecialPowers.Cc["@mozilla.org/network/io-service;1"] | |
| 60 .getService(SpecialPowers.Ci.nsIIOService); | |
| 61 | |
| 62 ALLOW_ACTION = pm.ALLOW_ACTION; | |
| 63 DENY_ACTION = pm.DENY_ACTION; | |
| 64 UNKNOWN_ACTION = pm.UNKNOWN_ACTION; | |
| 65 | |
| 66 /** | |
| 67 * This ridiculously over-engineered function makes an accessor function from | |
| 68 * any given preference string. Such accessors may be passed as the first | |
| 69 * parameter to the |hold| function defined below. | |
| 70 */ | |
| 71 makePrefAccessor = function(pref) { | |
| 72 var splat = pref.split('.'), | |
| 73 basePref = splat.pop(), | |
| 74 branch, kind; | |
| 75 | |
| 76 try { | |
| 77 branch = prefService.getBranch(splat.join('.') + '.'); | |
| 78 } catch (x) { | |
| 79 alert("Calling prefService.getBranch failed: " + | |
| 80 "did you forget to enable UniversalXPConnect?"); | |
| 81 throw x; | |
| 82 } | |
| 83 | |
| 84 switch (branch.getPrefType(basePref)) { | |
| 85 case branch.PREF_STRING: kind = "CharPref"; break; | |
| 86 case branch.PREF_INT: kind = "IntPref"; break; | |
| 87 case branch.PREF_BOOL: kind = "BoolPref"; break; | |
| 88 case branch.PREF_INVALID: kind = "ComplexValue"; | |
| 89 } | |
| 90 | |
| 91 return function(value) { | |
| 92 var oldValue = branch['get' + kind](basePref); | |
| 93 if (arguments.length > 0) | |
| 94 branch['set' + kind](basePref, value); | |
| 95 return oldValue; | |
| 96 }; | |
| 97 }; | |
| 98 | |
| 99 makePopupPrivAccessor = function(uri) { | |
| 100 uri = ioService.newURI(uri, null, null); | |
| 101 var principal = SpecialPowers.Cc["@mozilla.org/scriptsecuritymanager;1"] | |
| 102 .getService(SpecialPowers.Ci.nsIScriptSecurityManager) | |
| 103 .getNoAppCodebasePrincipal(uri); | |
| 104 | |
| 105 return function(permission) { | |
| 106 var old = pm.testPermissionFromPrincipal(principal, "popup"); | |
| 107 if (arguments.length) { | |
| 108 pm.removeFromPrincipal(principal, "popup"); | |
| 109 pm.addFromPrincipal(principal, "popup", permission); | |
| 110 } | |
| 111 return old; | |
| 112 }; | |
| 113 }; | |
| 114 | |
| 115 })(); | |
| 116 | |
| 117 /** | |
| 118 * This function takes an accessor function, a new value, and a callback | |
| 119 * function. It assigns the new value to the accessor, saving the old value, | |
| 120 * then calls the callback function with the new and old values. Before | |
| 121 * returning, |hold| sets the accessor back to the old value, even if the | |
| 122 * callback function misbehaved (i.e., threw). | |
| 123 * | |
| 124 * For sanity's sake, |hold| also ensures that the accessor still has the new | |
| 125 * value at the time the old value is reassigned. The accessor's value might | |
| 126 * have changed to something entirely different during the execution of the | |
| 127 * callback function, but it must have changed back. | |
| 128 * | |
| 129 * Without such a mechanism it would be very difficult to verify that these | |
| 130 * tests leave the browser's preferences/privileges as they were originally. | |
| 131 */ | |
| 132 function hold(accessor, value, body) { | |
| 133 var old_value = accessor(value); | |
| 134 try { return body(value, old_value) } | |
| 135 finally { | |
| 136 old_value = accessor(old_value); | |
| 137 if (old_value !== value) | |
| 138 throw [accessor, value, old_value]; | |
| 139 } | |
| 140 } |
