inspector/InjectedScriptHost.cpp

   1 /*
   2  * Copyright (C) 2013 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "InjectedScriptHost.h"
  28
  29 #include "JSInjectedScriptHost.h"
  30
  31 using namespace JSC;
  32
  33 namespace Inspector {
  34
  35 InjectedScriptHost::~InjectedScriptHost()
  36 {
  37 }
  38
  39 JSValue InjectedScriptHost::jsWrapper(ExecState* exec, JSGlobalObject* globalObject)
  40 {
  41     auto key = std::make_pair(exec, globalObject);
  42     auto it = m_wrappers.find(key);
  43     if (it != m_wrappers.end())
  44         return it->value.get();
  45
  46     JSValue jsValue = toJS(exec, globalObject, this);
  47     if (!jsValue.isObject())
  48         return jsValue;
  49
  50     JSObject* jsObject = jsValue.toObject(exec, globalObject);
  51     Strong<JSObject> wrapper(exec->vm(), jsObject);
  52     m_wrappers.add(key, wrapper);
  53
  54     return jsValue;
  55 }
  56
  57 static void clearWrapperFromValue(JSValue value)
  58 {
  59     JSInjectedScriptHost* jsInjectedScriptHost = toJSInjectedScriptHost(value);
  60     ASSERT(jsInjectedScriptHost);
  61     if (jsInjectedScriptHost)
  62         jsInjectedScriptHost->releaseImpl();
  63 }
  64
  65 void InjectedScriptHost::clearWrapper(ExecState* exec, JSGlobalObject* globalObject)
  66 {
  67     auto key = std::make_pair(exec, globalObject);
  68     clearWrapperFromValue(m_wrappers.take(key).get());
  69 }
  70
  71 void InjectedScriptHost::clearAllWrappers()
  72 {
  73     for (auto& wrapper : m_wrappers)
  74         clearWrapperFromValue(wrapper.value.get());
  75
  76     m_wrappers.clear();
  77 }
  78
  79 } // namespace Inspector