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      1 // Copyright 2014 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 "extensions/renderer/css_native_handler.h"
      6 
      7 #include "extensions/renderer/script_context.h"
      8 #include "third_party/WebKit/public/platform/WebString.h"
      9 #include "third_party/WebKit/public/web/WebScriptBindings.h"
     10 #include "third_party/WebKit/public/web/WebSelector.h"
     11 
     12 namespace extensions {
     13 
     14 using blink::WebString;
     15 
     16 CssNativeHandler::CssNativeHandler(ScriptContext* context)
     17     : ObjectBackedNativeHandler(context) {
     18   RouteFunction("CanonicalizeCompoundSelector",
     19                 base::Bind(&CssNativeHandler::CanonicalizeCompoundSelector,
     20                            base::Unretained(this)));
     21 }
     22 
     23 void CssNativeHandler::CanonicalizeCompoundSelector(
     24     const v8::FunctionCallbackInfo<v8::Value>& args) {
     25   CHECK_EQ(args.Length(), 1);
     26   CHECK(args[0]->IsString());
     27   WebString input_selector =
     28       blink::WebScriptBindings::toWebString(args[0].As<v8::String>());
     29   WebString output_selector = blink::canonicalizeSelector(
     30       input_selector, blink::WebSelectorTypeCompound);
     31   args.GetReturnValue().Set(blink::WebScriptBindings::toV8String(
     32       output_selector, context()->v8_context()->GetIsolate()));
     33 }
     34 
     35 }  // namespace extensions
     36