// Copyright 2016 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 "content/shell/browser/shell_web_contents_view_delegate.h"

#include "base/strings/utf_string_conversions.h"
#include "content/public/browser/web_contents.h"
#include "content/shell/browser/shell_devtools_frontend.h"
#include "content/shell/common/shell_switches.h"
#include "ui/aura/client/screen_position_client.h"
#include "ui/aura/window.h"
#include "ui/base/models/simple_menu_model.h"
#include "ui/views/controls/menu/menu_runner.h"
#include "ui/views/widget/widget.h"

namespace content {
namespace {

// Model for the "Debug" menu
class ContextMenuModel : public ui::SimpleMenuModel,
                         public ui::SimpleMenuModel::Delegate {
 public:
  ContextMenuModel(WebContents* web_contents, const ContextMenuParams& params)
      : ui::SimpleMenuModel(this),
        web_contents_(web_contents),
        params_(params) {
    AddItem(COMMAND_OPEN_DEVTOOLS, base::ASCIIToUTF16("Inspect Element"));
  }
  ~ContextMenuModel() override {}

  // ui::SimpleMenuModel::Delegate:
  bool IsCommandIdChecked(int command_id) const override { return false; }
  bool IsCommandIdEnabled(int command_id) const override { return true; }
  void ExecuteCommand(int command_id, int event_flags) override {
    switch (command_id) {
      case COMMAND_OPEN_DEVTOOLS:
        ShellDevToolsFrontend* devtools_frontend =
            ShellDevToolsFrontend::Show(web_contents_);
        devtools_frontend->Activate();
        devtools_frontend->Focus();
        devtools_frontend->InspectElementAt(params_.x, params_.y);
        break;
    };
  }

 private:
  enum CommandID { COMMAND_OPEN_DEVTOOLS };

  WebContents* web_contents_;
  ContextMenuParams params_;

  DISALLOW_COPY_AND_ASSIGN(ContextMenuModel);
};

}  // namespace

WebContentsViewDelegate* CreateShellWebContentsViewDelegate(
    WebContents* web_contents) {
  return new ShellWebContentsViewDelegate(web_contents);
}

ShellWebContentsViewDelegate::ShellWebContentsViewDelegate(
    WebContents* web_contents)
    : web_contents_(web_contents) {}

ShellWebContentsViewDelegate::~ShellWebContentsViewDelegate() {}

void ShellWebContentsViewDelegate::ShowContextMenu(
    RenderFrameHost* render_frame_host,
    const ContextMenuParams& params) {
  if (switches::IsRunLayoutTestSwitchPresent())
    return;

  gfx::Point screen_point(params.x, params.y);

  // Convert from content coordinates to window coordinates.
  // This code copied from chrome_web_contents_view_delegate_views.cc
  aura::Window* web_contents_window = web_contents_->GetNativeView();
  aura::Window* root_window = web_contents_window->GetRootWindow();
  aura::client::ScreenPositionClient* screen_position_client =
      aura::client::GetScreenPositionClient(root_window);
  if (screen_position_client) {
    screen_position_client->ConvertPointToScreen(web_contents_window,
                                                 &screen_point);
  }

  context_menu_model_.reset(new ContextMenuModel(web_contents_, params));
  context_menu_runner_.reset(new views::MenuRunner(
      context_menu_model_.get(),
      views::MenuRunner::CONTEXT_MENU | views::MenuRunner::ASYNC));

  views::Widget* widget = views::Widget::GetWidgetForNativeView(
      web_contents_->GetTopLevelNativeWindow());
  context_menu_runner_->RunMenuAt(
      widget, nullptr, gfx::Rect(screen_point, gfx::Size()),
      views::MENU_ANCHOR_TOPRIGHT, ui::MENU_SOURCE_NONE);
}

}  // namespace content