// Copyright (c) 2012 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/browser/ui/views/frame/browser_frame.h"

#include "ash/shell.h"
#include "base/chromeos/chromeos_version.h"
#include "base/i18n/rtl.h"
#include "chrome/browser/themes/theme_service.h"
#include "chrome/browser/themes/theme_service_factory.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/browser_window_state.h"
#include "chrome/browser/ui/views/frame/browser_non_client_frame_view.h"
#include "chrome/browser/ui/views/frame/browser_root_view.h"
#include "chrome/browser/ui/views/frame/browser_view.h"
#include "chrome/browser/ui/views/frame/native_browser_frame.h"
#include "chrome/browser/ui/views/frame/system_menu_model_builder.h"
#include "chrome/common/chrome_switches.h"
#include "ui/aura/root_window.h"
#include "ui/aura/window.h"
#include "ui/base/hit_test.h"
#include "ui/base/theme_provider.h"
#include "ui/gfx/screen.h"
#include "ui/views/controls/menu/menu_model_adapter.h"
#include "ui/views/controls/menu/menu_runner.h"
#include "ui/views/widget/native_widget.h"

#if defined(OS_WIN) && !defined(USE_AURA)
#include "chrome/browser/ui/views/frame/glass_browser_frame_view.h"
#endif

#if defined(USE_ASH)
#include "chrome/browser/ui/ash/ash_init.h"
#endif

////////////////////////////////////////////////////////////////////////////////
// BrowserFrame, public:

BrowserFrame::BrowserFrame(BrowserView* browser_view)
    : native_browser_frame_(NULL),
      root_view_(NULL),
      browser_frame_view_(NULL),
      browser_view_(browser_view) {
  browser_view_->set_frame(this);
  set_is_secondary_widget(false);
  // Don't focus anything on creation, selecting a tab will set the focus.
  set_focus_on_creation(false);
}

BrowserFrame::~BrowserFrame() {
}

void BrowserFrame::InitBrowserFrame() {
  native_browser_frame_ =
      NativeBrowserFrame::CreateNativeBrowserFrame(this, browser_view_);
  views::Widget::InitParams params;
  params.delegate = browser_view_;
  params.native_widget = native_browser_frame_->AsNativeWidget();
  if (browser_view_->browser()->is_type_tabbed()) {
    // Typed panel/popup can only return a size once the widget has been
    // created.
    chrome::GetSavedWindowBoundsAndShowState(browser_view_->browser(),
                                             &params.bounds,
                                             &params.show_state);
  }
  if (browser_view_->IsPanel()) {
    // We need to set the top-most bit when the panel window is created.
    // There is a Windows bug/feature that would very likely prevent the window
    // from being changed to top-most after the window is created without
    // activation.
    params.type = views::Widget::InitParams::TYPE_PANEL;
  }
#if defined(USE_ASH)
  if (browser_view_->browser()->host_desktop_type() ==
      chrome::HOST_DESKTOP_TYPE_ASH || chrome::ShouldOpenAshOnStartup()) {
    params.context = ash::Shell::GetAllRootWindows()[0];
  }
#endif
  Init(params);

  if (!native_browser_frame_->UsesNativeSystemMenu()) {
    DCHECK(non_client_view());
    non_client_view()->set_context_menu_controller(this);
  }
}

int BrowserFrame::GetMinimizeButtonOffset() const {
  return native_browser_frame_->GetMinimizeButtonOffset();
}

gfx::Rect BrowserFrame::GetBoundsForTabStrip(views::View* tabstrip) const {
  return browser_frame_view_->GetBoundsForTabStrip(tabstrip);
}

BrowserNonClientFrameView::TabStripInsets BrowserFrame::GetTabStripInsets(
    bool force_restored) const {
  return browser_frame_view_->GetTabStripInsets(force_restored);
}

int BrowserFrame::GetThemeBackgroundXInset() const {
  return browser_frame_view_->GetThemeBackgroundXInset();
}

void BrowserFrame::UpdateThrobber(bool running) {
  browser_frame_view_->UpdateThrobber(running);
}

views::View* BrowserFrame::GetFrameView() const {
  return browser_frame_view_;
}

void BrowserFrame::TabStripDisplayModeChanged() {
  if (GetRootView()->has_children()) {
    // Make sure the child of the root view gets Layout again.
    GetRootView()->child_at(0)->InvalidateLayout();
  }
  GetRootView()->Layout();
  native_browser_frame_->TabStripDisplayModeChanged();
}

///////////////////////////////////////////////////////////////////////////////
// BrowserFrame, views::Widget overrides:

views::internal::RootView* BrowserFrame::CreateRootView() {
  root_view_ = new BrowserRootView(browser_view_, this);
  return root_view_;
}

views::NonClientFrameView* BrowserFrame::CreateNonClientFrameView() {
  browser_frame_view_ =
      chrome::CreateBrowserNonClientFrameView(this, browser_view_);
  return browser_frame_view_;
}

bool BrowserFrame::GetAccelerator(int command_id,
                                  ui::Accelerator* accelerator) {
  return browser_view_->GetAccelerator(command_id, accelerator);
}

ui::ThemeProvider* BrowserFrame::GetThemeProvider() const {
  return ThemeServiceFactory::GetForProfile(
      browser_view_->browser()->profile());
}

void BrowserFrame::OnNativeWidgetActivationChanged(bool active) {
  if (active) {
    // When running under remote desktop, if the remote desktop client is not
    // active on the users desktop, then none of the windows contained in the
    // remote desktop will be activated.  However, NativeWidgetWin::Activate()
    // will still bring this browser window to the foreground.  We explicitly
    // set ourselves as the last active browser window to ensure that we get
    // treated as such by the rest of Chrome.
    BrowserList::SetLastActive(browser_view_->browser());
  }
  Widget::OnNativeWidgetActivationChanged(active);
}

void BrowserFrame::ShowContextMenuForView(views::View* source,
                                          const gfx::Point& p) {
  // Only show context menu if point is in unobscured parts of browser, i.e.
  // if NonClientHitTest returns :
  // - HTCAPTION: in title bar or unobscured part of tabstrip
  // - HTNOWHERE: as the name implies.
  gfx::Point point_in_view_coords(p);
  views::View::ConvertPointFromScreen(non_client_view(), &point_in_view_coords);
  int hit_test = non_client_view()->NonClientHitTest(point_in_view_coords);
  if (hit_test == HTCAPTION || hit_test == HTNOWHERE) {
    views::MenuModelAdapter menu_adapter(GetSystemMenuModel());
    menu_runner_.reset(new views::MenuRunner(menu_adapter.CreateMenu()));
    if (menu_runner_->RunMenuAt(source->GetWidget(), NULL,
          gfx::Rect(p, gfx::Size(0,0)), views::MenuItemView::TOPLEFT,
          views::MenuRunner::HAS_MNEMONICS | views::MenuRunner::CONTEXT_MENU) ==
        views::MenuRunner::MENU_DELETED)
      return;
  }
}

ui::MenuModel* BrowserFrame::GetSystemMenuModel() {
  if (!menu_model_builder_.get()) {
    menu_model_builder_.reset(
        new SystemMenuModelBuilder(browser_view_, browser_view_->browser()));
    menu_model_builder_->Init();
  }
  return menu_model_builder_->menu_model();
}

AvatarMenuButton* BrowserFrame::GetAvatarMenuButton() {
  return browser_frame_view_->avatar_button();
}

#if !defined(OS_WIN) || defined(USE_AURA)
bool BrowserFrame::ShouldLeaveOffsetNearTopBorder() {
  return !IsMaximized();
}
#endif  // OS_WIN