// Copyright (c) 2012 The Chromium Embedded Framework 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 "cefclient/client_renderer.h"

#include <sstream>
#include <string>

#include "include/cef_dom.h"
#include "include/wrapper/cef_message_router.h"
#include "cefclient/util.h"

namespace client_renderer {

const char kFocusedNodeChangedMessage[] = "ClientRenderer.FocusedNodeChanged";

namespace {

class ClientRenderDelegate : public ClientApp::RenderDelegate {
 public:
  ClientRenderDelegate()
    : last_node_is_editable_(false) {
  }

  virtual void OnWebKitInitialized(CefRefPtr<ClientApp> app) OVERRIDE {
    // Create the renderer-side router for query handling.
    CefMessageRouterConfig config;
    message_router_ = CefMessageRouterRendererSide::Create(config);
  }

  virtual void OnContextCreated(CefRefPtr<ClientApp> app,
                                CefRefPtr<CefBrowser> browser,
                                CefRefPtr<CefFrame> frame,
                                CefRefPtr<CefV8Context> context) OVERRIDE {
    message_router_->OnContextCreated(browser,  frame, context);
  }

  virtual void OnContextReleased(CefRefPtr<ClientApp> app,
                                 CefRefPtr<CefBrowser> browser,
                                 CefRefPtr<CefFrame> frame,
                                 CefRefPtr<CefV8Context> context) OVERRIDE {
    message_router_->OnContextReleased(browser,  frame, context);
  }

  virtual void OnFocusedNodeChanged(CefRefPtr<ClientApp> app,
                                    CefRefPtr<CefBrowser> browser,
                                    CefRefPtr<CefFrame> frame,
                                    CefRefPtr<CefDOMNode> node) OVERRIDE {
    bool is_editable = (node.get() && node->IsEditable());
    if (is_editable != last_node_is_editable_) {
      // Notify the browser of the change in focused element type.
      last_node_is_editable_ = is_editable;
      CefRefPtr<CefProcessMessage> message =
          CefProcessMessage::Create(kFocusedNodeChangedMessage);
      message->GetArgumentList()->SetBool(0, is_editable);
      browser->SendProcessMessage(PID_BROWSER, message);
    }
  }

  virtual bool OnProcessMessageReceived(
      CefRefPtr<ClientApp> app,
      CefRefPtr<CefBrowser> browser,
      CefProcessId source_process,
      CefRefPtr<CefProcessMessage> message) OVERRIDE {
    return message_router_->OnProcessMessageReceived(
        browser, source_process, message);
  }

 private:
  bool last_node_is_editable_;

  // Handles the renderer side of query routing.
  CefRefPtr<CefMessageRouterRendererSide> message_router_;

  IMPLEMENT_REFCOUNTING(ClientRenderDelegate);
};

}  // namespace

void CreateRenderDelegates(ClientApp::RenderDelegateSet& delegates) {
  delegates.insert(new ClientRenderDelegate);
}

}  // namespace client_renderer