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      1 /*
      2  * Copyright (C) 2009 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 "V8ConsoleMessage.h"
     33 
     34 #include "Console.h"
     35 #include "DOMWindow.h"
     36 #include "Frame.h"
     37 #include "OwnPtr.h"
     38 #include "Page.h"
     39 #include "V8Binding.h"
     40 #include "V8Proxy.h"
     41 
     42 namespace WebCore {
     43 
     44 Vector<V8ConsoleMessage>* V8ConsoleMessage::m_delayedMessages = 0;
     45 
     46 V8ConsoleMessage::V8ConsoleMessage(const String& string, const String& sourceID, unsigned lineNumber)
     47      : m_string(string)
     48      , m_sourceID(sourceID)
     49      , m_lineNumber(lineNumber)
     50 {
     51 }
     52 
     53 void V8ConsoleMessage::dispatchNow(Page* page)
     54 {
     55     ASSERT(page);
     56 
     57     // Process any delayed messages to make sure that messages
     58     // appear in the right order in the console.
     59     processDelayed();
     60 
     61     Console* console = page->mainFrame()->domWindow()->console();
     62     console->addMessage(JSMessageSource, LogMessageType, ErrorMessageLevel, m_string, m_lineNumber, m_sourceID);
     63 }
     64 
     65 void V8ConsoleMessage::dispatchLater()
     66 {
     67     if (!m_delayedMessages) {
     68         // Allocate a vector for the delayed messages. Will be
     69         // deallocated when the delayed messages are processed
     70         // in processDelayed().
     71         m_delayedMessages = new Vector<V8ConsoleMessage>();
     72     }
     73 
     74     m_delayedMessages->append(*this);
     75 }
     76 
     77 void V8ConsoleMessage::processDelayed()
     78 {
     79     if (!m_delayedMessages)
     80         return;
     81 
     82     // Take ownership of the delayed vector to avoid re-entrancy issues.
     83     OwnPtr<Vector<V8ConsoleMessage> > delayedMessages(m_delayedMessages);
     84     m_delayedMessages = 0;
     85 
     86     // If we have a delayed vector it cannot be empty.
     87     ASSERT(!delayedMessages->isEmpty());
     88 
     89     // Add the delayed messages to the page of the active
     90     // context. If that for some bizarre reason does not
     91     // exist, we clear the list of delayed messages to avoid
     92     // posting messages. We still deallocate the vector.
     93     Frame* frame = V8Proxy::retrieveFrameForEnteredContext();
     94     if (!frame)
     95         return;
     96     Page* page = frame->page();
     97     if (!page)
     98         return;
     99 
    100     // Iterate through all the delayed messages and add them
    101     // to the console.
    102     const int size = delayedMessages->size();
    103     for (int i = 0; i < size; ++i)
    104         delayedMessages->at(i).dispatchNow(page);
    105 }
    106 
    107 void V8ConsoleMessage::handler(v8::Handle<v8::Message> message, v8::Handle<v8::Value> data)
    108 {
    109     // Use the frame where JavaScript is called from.
    110     Frame* frame = V8Proxy::retrieveFrameForEnteredContext();
    111     if (!frame)
    112         return;
    113     Page* page = frame->page();
    114     if (!page)
    115         return;
    116 
    117     v8::Handle<v8::String> errorMessageString = message->Get();
    118     ASSERT(!errorMessageString.IsEmpty());
    119     String errorMessage = toWebCoreString(errorMessageString);
    120 
    121     v8::Handle<v8::Value> resourceName = message->GetScriptResourceName();
    122     bool useURL = resourceName.IsEmpty() || !resourceName->IsString();
    123     String resourceNameString = useURL ? frame->document()->url() : toWebCoreString(resourceName);
    124     V8ConsoleMessage consoleMessage(errorMessage, resourceNameString, message->GetLineNumber());
    125     consoleMessage.dispatchNow(page);
    126 }
    127 
    128 } // namespace WebCore
    129