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      1 /*
      2  * Copyright (C) 2010 Google 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 are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "InspectorClient.h"
     33 
     34 #if ENABLE(INSPECTOR)
     35 
     36 #include "Frame.h"
     37 #include "Page.h"
     38 #include "ScriptController.h"
     39 #include "ScriptSourceCode.h"
     40 
     41 namespace WebCore {
     42 
     43 bool InspectorClient::doDispatchMessageOnFrontendPage(Page* frontendPage, const String& message)
     44 {
     45     if (!frontendPage)
     46         return false;
     47 
     48     Frame* frame = frontendPage->mainFrame();
     49     if (!frame)
     50         return false;
     51 
     52     ScriptController* scriptController = frame->script();
     53     if (!scriptController)
     54         return false;
     55 
     56     String dispatchToFrontend("WebInspector.dispatchMessageFromBackend(");
     57     dispatchToFrontend += message;
     58     dispatchToFrontend += ");";
     59 
     60     // Do not call executeInWorld here since it will end up calling Document::updateStyleForAllDocuments().
     61     // As a result we might re-enter CSSStyleSelector::styleForElement() which is terrible.
     62     scriptController->evaluate(ScriptSourceCode(dispatchToFrontend));
     63     return true;
     64 }
     65 
     66 } // namespace WebCore
     67 
     68 #endif // ENABLE(INSPECTOR)
     69