tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

DOMEventDispatch.cpp (2028B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
      2 * vim: set ts=8 sts=2 et sw=2 tw=80:
      3 * This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "js/DOMEventDispatch.h"
      8 #include "js/Printf.h"
      9 #include "vm/JSContext.h"
     10 #include "vm/JSScript.h"
     11 #include "vm/StringType.h"
     12 
     13 JS_PUBLIC_API void JS::SetDispatchDOMEventCallback(
     14    JSContext* cx, DispatchDOMEventCallback callback) {
     15  if (cx && cx->runtime()) {
     16    cx->runtime()->dispatchDOMEventCallback = callback;
     17  }
     18 }
     19 
     20 void js::TestingDispatchDOMEvent(JSContext* cx, const char* eventType) {
     21  // Dispatch callback is available when `dom.expose_test_interfaces = true`
     22  if (cx->runtime()->dispatchDOMEventCallback) {
     23    cx->runtime()->dispatchDOMEventCallback(cx, eventType);
     24  }
     25 }
     26 
     27 void js::TestingDispatchDOMEvent(JSContext* cx, const char* eventType,
     28                                 JSScript* script) {
     29  // Dispatch callback is available when `dom.expose_test_interfaces = true`
     30  if (!cx->runtime()->dispatchDOMEventCallback) {
     31    return;
     32  }
     33 
     34  if (!script || !script->function()) {
     35    // Fallback to just event name if script is not a function.
     36    cx->runtime()->dispatchDOMEventCallback(cx, eventType);
     37    return;
     38  }
     39 
     40  JS::Rooted<JSAtom*> atom(cx);
     41  if (!script->function()->getDisplayAtom(cx, &atom)) {
     42    // If failed, then simply just return.
     43    cx->clearPendingException();
     44    return;
     45  }
     46 
     47  if (!atom) {
     48    return;
     49  }
     50 
     51  JS::UniqueChars nameStr = AtomToPrintableString(cx, atom);
     52  if (!nameStr) {
     53    // If failed, then simply just return.
     54    cx->clearPendingException();
     55    return;
     56  }
     57 
     58  // Construct event name with function name: "eventType: functionName"
     59  JS::UniqueChars eventWithName =
     60      JS_smprintf("%s: %s", eventType, nameStr.get());
     61  if (eventWithName) {
     62    cx->runtime()->dispatchDOMEventCallback(cx, eventWithName.get());
     63    return;
     64  }
     65 }