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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "chrome/renderer/search_extension.h" | |
| 6 | |
| 7 #include <string> | |
| 8 #include <vector> | |
| 9 | |
| 10 #include "base/command_line.h" | |
| 11 #include "chrome/renderer/searchbox.h" | |
| 12 #include "content/public/renderer/render_view.h" | |
| 13 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h" | |
| 14 #include "v8/include/v8.h" | |
| 15 | |
| 16 using WebKit::WebFrame; | |
| 17 using WebKit::WebView; | |
| 18 | |
| 19 namespace extensions_v8 { | |
| 20 | |
| 21 const char* const kSearchExtensionName = "v8/InstantSearch"; | |
| 22 | |
| 23 class SearchExtensionWrapper : public v8::Extension { | |
| 24 public: | |
| 25 SearchExtensionWrapper(); | |
| 26 | |
| 27 // Allows v8's javascript code to call the native functions defined | |
| 28 // in this class for window.chrome. | |
| 29 virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction( | |
| 30 v8::Handle<v8::String> name); | |
| 31 | |
| 32 // Helper function to find the RenderView. May return NULL. | |
| 33 static content::RenderView* GetRenderView(); | |
| 34 | |
| 35 // Implementation of window.chrome.setSuggestResult. | |
| 36 static v8::Handle<v8::Value> SetSuggestResult(const v8::Arguments& args); | |
| 37 | |
| 38 private: | |
| 39 DISALLOW_COPY_AND_ASSIGN(SearchExtensionWrapper); | |
| 40 }; | |
| 41 | |
| 42 SearchExtensionWrapper::SearchExtensionWrapper() | |
| 43 : v8::Extension(kSearchExtensionName, | |
| 44 "var chrome;" | |
| 45 "if (!chrome)" | |
| 46 " chrome = {};" | |
| 47 "chrome.setSuggestResult = function(text) {" | |
| 48 " native function NativeSetSuggestResult();" | |
| 49 " NativeSetSuggestResult(text);" | |
| 50 "};") { | |
| 51 } | |
| 52 | |
| 53 v8::Handle<v8::FunctionTemplate> SearchExtensionWrapper::GetNativeFunction( | |
| 54 v8::Handle<v8::String> name) { | |
| 55 if (name->Equals(v8::String::New("NativeSetSuggestResult"))) { | |
| 56 return v8::FunctionTemplate::New(SetSuggestResult); | |
| 57 } | |
| 58 | |
| 59 return v8::Handle<v8::FunctionTemplate>(); | |
| 60 } | |
| 61 | |
| 62 // static | |
| 63 content::RenderView* SearchExtensionWrapper::GetRenderView() { | |
| 64 WebFrame* webframe = WebFrame::frameForEnteredContext(); | |
| 65 DCHECK(webframe) << "There should be an active frame since we just got " | |
| 66 "a native function called."; | |
| 67 if (!webframe) return NULL; | |
| 68 | |
| 69 WebView* webview = webframe->view(); | |
| 70 if (!webview) return NULL; // can happen during closing | |
| 71 | |
| 72 return content::RenderView::FromWebView(webview); | |
| 73 } | |
| 74 | |
| 75 // static | |
| 76 v8::Handle<v8::Value> SearchExtensionWrapper::SetSuggestResult( | |
| 77 const v8::Arguments& args) { | |
| 78 if (!args.Length() || !args[0]->IsString()) return v8::Undefined(); | |
| 79 | |
| 80 content::RenderView* render_view = GetRenderView(); | |
| 81 if (!render_view) return v8::Undefined(); | |
| 82 | |
| 83 std::vector<std::string> suggestions; | |
| 84 suggestions.push_back(std::string(*v8::String::Utf8Value(args[0]))); | |
| 85 SearchBox::Get(render_view)->SetSuggestions(suggestions, | |
| 86 INSTANT_COMPLETE_NOW); | |
| 87 return v8::Undefined(); | |
| 88 } | |
| 89 | |
| 90 v8::Extension* SearchExtension::Get() { | |
| 91 return new SearchExtensionWrapper(); | |
| 92 } | |
| 93 | |
| 94 } // namespace extensions_v8 | |
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