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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/renderer/extensions/console.h"
#include "base/compiler_specific.h"
#include "base/debug/alias.h"
#include "base/lazy_instance.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/renderer/extensions/dispatcher.h"
#include "chrome/renderer/extensions/extension_helper.h"
#include "content/public/renderer/render_view.h"
#include "content/public/renderer/render_view_visitor.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebConsoleMessage.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
namespace extensions {
namespace console {
namespace {
// Finds the RenderView associated with a context. Note: there will be multiple
// contexts in each RenderView.
class ByContextFinder : public content::RenderViewVisitor {
public:
static content::RenderView* Find(v8::Handle<v8::Context> context) {
ByContextFinder finder(context);
content::RenderView::ForEach(&finder);
return finder.found_;
}
private:
explicit ByContextFinder(v8::Handle<v8::Context> context)
: context_(context), found_(NULL) {
}
virtual bool Visit(content::RenderView* render_view) OVERRIDE {
ExtensionHelper* helper = ExtensionHelper::Get(render_view);
if (helper &&
helper->dispatcher()->v8_context_set().GetByV8Context(context_)) {
found_ = render_view;
}
return !found_;
}
v8::Handle<v8::Context> context_;
content::RenderView* found_;
DISALLOW_COPY_AND_ASSIGN(ByContextFinder);
};
// Writes |message| to stack to show up in minidump, then crashes.
void CheckWithMinidump(const std::string& message) {
char minidump[256];
base::debug::Alias(&minidump);
base::snprintf(minidump, arraysize(minidump),
"e::console: %s", message.c_str());
CHECK(false) << message;
}
} // namespace
void Debug(content::RenderView* render_view, const std::string& message) {
AddMessage(render_view, content::CONSOLE_MESSAGE_LEVEL_DEBUG, message);
}
void Log(content::RenderView* render_view, const std::string& message) {
AddMessage(render_view, content::CONSOLE_MESSAGE_LEVEL_LOG, message);
}
void Warn(content::RenderView* render_view, const std::string& message) {
AddMessage(render_view, content::CONSOLE_MESSAGE_LEVEL_WARNING, message);
}
void Error(content::RenderView* render_view, const std::string& message) {
AddMessage(render_view, content::CONSOLE_MESSAGE_LEVEL_ERROR, message);
}
void Fatal(content::RenderView* render_view, const std::string& message) {
Error(render_view, message);
CheckWithMinidump(message);
}
void AddMessage(content::RenderView* render_view,
content::ConsoleMessageLevel level,
const std::string& message) {
WebKit::WebView* web_view = render_view->GetWebView();
if (!web_view || !web_view->mainFrame())
return;
WebKit::WebConsoleMessage::Level target_level =
WebKit::WebConsoleMessage::LevelLog;
switch (level) {
case content::CONSOLE_MESSAGE_LEVEL_DEBUG:
target_level = WebKit::WebConsoleMessage::LevelDebug;
break;
case content::CONSOLE_MESSAGE_LEVEL_LOG:
target_level = WebKit::WebConsoleMessage::LevelLog;
break;
case content::CONSOLE_MESSAGE_LEVEL_WARNING:
target_level = WebKit::WebConsoleMessage::LevelWarning;
break;
case content::CONSOLE_MESSAGE_LEVEL_ERROR:
target_level = WebKit::WebConsoleMessage::LevelError;
break;
}
web_view->mainFrame()->addMessageToConsole(
WebKit::WebConsoleMessage(target_level, ASCIIToUTF16(message)));
}
void Debug(v8::Handle<v8::Context> context, const std::string& message) {
AddMessage(context, content::CONSOLE_MESSAGE_LEVEL_DEBUG, message);
}
void Log(v8::Handle<v8::Context> context, const std::string& message) {
AddMessage(context, content::CONSOLE_MESSAGE_LEVEL_LOG, message);
}
void Warn(v8::Handle<v8::Context> context, const std::string& message) {
AddMessage(context, content::CONSOLE_MESSAGE_LEVEL_WARNING, message);
}
void Error(v8::Handle<v8::Context> context, const std::string& message) {
AddMessage(context, content::CONSOLE_MESSAGE_LEVEL_ERROR, message);
}
void Fatal(v8::Handle<v8::Context> context, const std::string& message) {
Error(context, message);
CheckWithMinidump(message);
}
void AddMessage(v8::Handle<v8::Context> context,
content::ConsoleMessageLevel level,
const std::string& message) {
if (context.IsEmpty()) {
LOG(WARNING) << "Could not log \"" << message << "\": no context given";
return;
}
content::RenderView* render_view = ByContextFinder::Find(context);
if (!render_view) {
LOG(WARNING) << "Could not log \"" << message << "\": no render view found";
return;
}
AddMessage(render_view, level, message);
}
} // namespace console
} // namespace extensions
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