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// Copyright (c) 2011 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/search_extension.h"
#include <string>
#include <vector>
#include "base/command_line.h"
#include "chrome/renderer/searchbox.h"
#include "content/renderer/render_view.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
#include "v8/include/v8.h"
using WebKit::WebFrame;
using WebKit::WebView;
namespace extensions_v8 {
const char* const kSearchExtensionName = "v8/InstantSearch";
class SearchExtensionWrapper : public v8::Extension {
public:
SearchExtensionWrapper();
// Allows v8's javascript code to call the native functions defined
// in this class for window.chrome.
virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
v8::Handle<v8::String> name);
// Helper function to find the RenderView. May return NULL.
static RenderView* GetRenderView();
// Implementation of window.chrome.setSuggestResult.
static v8::Handle<v8::Value> SetSuggestResult(const v8::Arguments& args);
private:
DISALLOW_COPY_AND_ASSIGN(SearchExtensionWrapper);
};
SearchExtensionWrapper::SearchExtensionWrapper()
: v8::Extension(kSearchExtensionName,
"var chrome;"
"if (!chrome)"
" chrome = {};"
"chrome.setSuggestResult = function(text) {"
" native function NativeSetSuggestResult();"
" NativeSetSuggestResult(text);"
"};") {
}
v8::Handle<v8::FunctionTemplate> SearchExtensionWrapper::GetNativeFunction(
v8::Handle<v8::String> name) {
if (name->Equals(v8::String::New("NativeSetSuggestResult"))) {
return v8::FunctionTemplate::New(SetSuggestResult);
}
return v8::Handle<v8::FunctionTemplate>();
}
// static
RenderView* SearchExtensionWrapper::GetRenderView() {
WebFrame* webframe = WebFrame::frameForEnteredContext();
DCHECK(webframe) << "There should be an active frame since we just got "
"a native function called.";
if (!webframe) return NULL;
WebView* webview = webframe->view();
if (!webview) return NULL; // can happen during closing
return RenderView::FromWebView(webview);
}
// static
v8::Handle<v8::Value> SearchExtensionWrapper::SetSuggestResult(
const v8::Arguments& args) {
if (!args.Length() || !args[0]->IsString()) return v8::Undefined();
RenderView* render_view = GetRenderView();
if (!render_view) return v8::Undefined();
std::vector<std::string> suggestions;
suggestions.push_back(std::string(*v8::String::Utf8Value(args[0])));
SearchBox::Get(render_view)->SetSuggestions(suggestions,
INSTANT_COMPLETE_NOW);
return v8::Undefined();
}
v8::Extension* SearchExtension::Get() {
return new SearchExtensionWrapper();
}
} // namespace extensions_v8
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