// 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/status_icons/status_icon_win.h"

#include "base/strings/string_number_conversions.h"
#include "base/win/windows_version.h"
#include "chrome/browser/ui/views/status_icons/status_tray_win.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/icon_util.h"
#include "ui/gfx/point.h"
#include "ui/gfx/rect.h"
#include "ui/views/controls/menu/menu_runner.h"

////////////////////////////////////////////////////////////////////////////////
// StatusIconWin, public:

StatusIconWin::StatusIconWin(StatusTrayWin* tray,
                             UINT id,
                             HWND window,
                             UINT message)
    : tray_(tray),
      icon_id_(id),
      window_(window),
      message_id_(message),
      menu_model_(NULL) {
  NOTIFYICONDATA icon_data;
  InitIconData(&icon_data);
  icon_data.uFlags = NIF_MESSAGE;
  icon_data.uCallbackMessage = message_id_;
  BOOL result = Shell_NotifyIcon(NIM_ADD, &icon_data);
  // This can happen if the explorer process isn't running when we try to
  // create the icon for some reason (for example, at startup).
  if (!result)
    LOG(WARNING) << "Unable to create status tray icon.";
}

StatusIconWin::~StatusIconWin() {
  // Remove our icon.
  NOTIFYICONDATA icon_data;
  InitIconData(&icon_data);
  Shell_NotifyIcon(NIM_DELETE, &icon_data);
}

void StatusIconWin::HandleClickEvent(const gfx::Point& cursor_pos,
                                     bool left_mouse_click) {
  // Pass to the observer if appropriate.
  if (left_mouse_click && HasObservers()) {
    DispatchClickEvent();
    return;
  }

  if (!menu_model_)
    return;

  // Set our window as the foreground window, so the context menu closes when
  // we click away from it.
  if (!SetForegroundWindow(window_))
    return;

  menu_runner_.reset(new views::MenuRunner(menu_model_,
                                           views::MenuRunner::HAS_MNEMONICS));
  ignore_result(menu_runner_->RunMenuAt(NULL,
                                        NULL,
                                        gfx::Rect(cursor_pos, gfx::Size()),
                                        views::MENU_ANCHOR_TOPLEFT,
                                        ui::MENU_SOURCE_MOUSE));
}

void StatusIconWin::HandleBalloonClickEvent() {
  if (HasObservers())
    DispatchBalloonClickEvent();
}

void StatusIconWin::ResetIcon() {
  NOTIFYICONDATA icon_data;
  InitIconData(&icon_data);
  // Delete any previously existing icon.
  Shell_NotifyIcon(NIM_DELETE, &icon_data);
  InitIconData(&icon_data);
  icon_data.uFlags = NIF_MESSAGE;
  icon_data.uCallbackMessage = message_id_;
  icon_data.hIcon = icon_.Get();
  // If we have an image, then set the NIF_ICON flag, which tells
  // Shell_NotifyIcon() to set the image for the status icon it creates.
  if (icon_data.hIcon)
    icon_data.uFlags |= NIF_ICON;
  // Re-add our icon.
  BOOL result = Shell_NotifyIcon(NIM_ADD, &icon_data);
  if (!result)
    LOG(WARNING) << "Unable to re-create status tray icon.";
}

void StatusIconWin::SetImage(const gfx::ImageSkia& image) {
  // Create the icon.
  NOTIFYICONDATA icon_data;
  InitIconData(&icon_data);
  icon_data.uFlags = NIF_ICON;
  icon_.Set(IconUtil::CreateHICONFromSkBitmap(*image.bitmap()));
  icon_data.hIcon = icon_.Get();
  BOOL result = Shell_NotifyIcon(NIM_MODIFY, &icon_data);
  if (!result)
    LOG(WARNING) << "Error setting status tray icon image";
}

void StatusIconWin::SetPressedImage(const gfx::ImageSkia& image) {
  // Ignore pressed images, since the standard on Windows is to not highlight
  // pressed status icons.
}

void StatusIconWin::SetToolTip(const base::string16& tool_tip) {
  // Create the icon.
  NOTIFYICONDATA icon_data;
  InitIconData(&icon_data);
  icon_data.uFlags = NIF_TIP;
  wcscpy_s(icon_data.szTip, tool_tip.c_str());
  BOOL result = Shell_NotifyIcon(NIM_MODIFY, &icon_data);
  if (!result)
    LOG(WARNING) << "Unable to set tooltip for status tray icon";
}

void StatusIconWin::DisplayBalloon(const gfx::ImageSkia& icon,
                                   const base::string16& title,
                                   const base::string16& contents) {
  NOTIFYICONDATA icon_data;
  InitIconData(&icon_data);
  icon_data.uFlags = NIF_INFO;
  icon_data.dwInfoFlags = NIIF_INFO;
  wcscpy_s(icon_data.szInfoTitle, title.c_str());
  wcscpy_s(icon_data.szInfo, contents.c_str());
  icon_data.uTimeout = 0;

  base::win::Version win_version = base::win::GetVersion();
  if (!icon.isNull() && win_version != base::win::VERSION_PRE_XP) {
    balloon_icon_.Set(IconUtil::CreateHICONFromSkBitmap(*icon.bitmap()));
    if (win_version >= base::win::VERSION_VISTA) {
      icon_data.hBalloonIcon = balloon_icon_.Get();
      icon_data.dwInfoFlags = NIIF_USER | NIIF_LARGE_ICON;
    } else {
      icon_data.hIcon = balloon_icon_.Get();
      icon_data.uFlags |= NIF_ICON;
      icon_data.dwInfoFlags = NIIF_USER;
    }
  }

  BOOL result = Shell_NotifyIcon(NIM_MODIFY, &icon_data);
  if (!result)
    LOG(WARNING) << "Unable to create status tray balloon.";
}

void StatusIconWin::ForceVisible() {
  tray_->UpdateIconVisibilityInBackground(this);
}

////////////////////////////////////////////////////////////////////////////////
// StatusIconWin, private:

void StatusIconWin::UpdatePlatformContextMenu(StatusIconMenuModel* menu) {
  // |menu_model_| is about to be destroyed. Destroy the menu (which closes it)
  // so that it doesn't attempt to continue using |menu_model_|.
  menu_runner_.reset();
  DCHECK(menu);
  menu_model_ = menu;
}

void StatusIconWin::InitIconData(NOTIFYICONDATA* icon_data) {
  if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
    memset(icon_data, 0, sizeof(NOTIFYICONDATA));
    icon_data->cbSize = sizeof(NOTIFYICONDATA);
  } else {
    memset(icon_data, 0, NOTIFYICONDATA_V3_SIZE);
    icon_data->cbSize = NOTIFYICONDATA_V3_SIZE;
  }

  icon_data->hWnd = window_;
  icon_data->uID = icon_id_;
}