// 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/extensions/api/app_current_window_internal/app_current_window_internal_api.h"

#include "apps/native_app_window.h"
#include "apps/shell_window.h"
#include "apps/shell_window_registry.h"
#include "base/command_line.h"
#include "chrome/common/extensions/api/app_current_window_internal.h"
#include "chrome/common/extensions/api/app_window.h"
#include "chrome/common/extensions/features/feature_channel.h"
#include "extensions/common/switches.h"

using apps::ShellWindow;
namespace SetBounds = extensions::api::app_current_window_internal::SetBounds;
using extensions::api::app_current_window_internal::Bounds;
namespace SetIcon = extensions::api::app_current_window_internal::SetIcon;

namespace extensions {

namespace {

const char kNoAssociatedShellWindow[] =
    "The context from which the function was called did not have an "
    "associated shell window.";

const char kDevChannelOnly[] =
    "This function is currently only available in the Dev channel.";

}  // namespace

bool AppCurrentWindowInternalExtensionFunction::RunImpl() {
  apps::ShellWindowRegistry* registry =
      apps::ShellWindowRegistry::Get(profile());
  DCHECK(registry);
  content::RenderViewHost* rvh = render_view_host();
  if (!rvh)
    // No need to set an error, since we won't return to the caller anyway if
    // there's no RVH.
    return false;
  ShellWindow* window = registry->GetShellWindowForRenderViewHost(rvh);
  if (!window) {
    error_ = kNoAssociatedShellWindow;
    return false;
  }
  return RunWithWindow(window);
}

bool AppCurrentWindowInternalFocusFunction::RunWithWindow(ShellWindow* window) {
  window->GetBaseWindow()->Activate();
  return true;
}

bool AppCurrentWindowInternalFullscreenFunction::RunWithWindow(
    ShellWindow* window) {
  window->Fullscreen();
  return true;
}

bool AppCurrentWindowInternalMaximizeFunction::RunWithWindow(
    ShellWindow* window) {
  window->Maximize();
  return true;
}

bool AppCurrentWindowInternalMinimizeFunction::RunWithWindow(
    ShellWindow* window) {
  window->Minimize();
  return true;
}

bool AppCurrentWindowInternalRestoreFunction::RunWithWindow(
    ShellWindow* window) {
  window->Restore();
  return true;
}

bool AppCurrentWindowInternalDrawAttentionFunction::RunWithWindow(
    ShellWindow* window) {
  window->GetBaseWindow()->FlashFrame(true);
  return true;
}

bool AppCurrentWindowInternalClearAttentionFunction::RunWithWindow(
    ShellWindow* window) {
  window->GetBaseWindow()->FlashFrame(false);
  return true;
}

bool AppCurrentWindowInternalShowFunction::RunWithWindow(
    ShellWindow* window) {
  window->GetBaseWindow()->Show();
  return true;
}

bool AppCurrentWindowInternalHideFunction::RunWithWindow(
    ShellWindow* window) {
  window->GetBaseWindow()->Hide();
  return true;
}

bool AppCurrentWindowInternalSetBoundsFunction::RunWithWindow(
    ShellWindow* window) {
  // Start with the current bounds, and change any values that are specified in
  // the incoming parameters.
  gfx::Rect bounds = window->GetClientBounds();
  scoped_ptr<SetBounds::Params> params(SetBounds::Params::Create(*args_));
  CHECK(params.get());
  if (params->bounds.left)
    bounds.set_x(*(params->bounds.left));
  if (params->bounds.top)
    bounds.set_y(*(params->bounds.top));
  if (params->bounds.width)
    bounds.set_width(*(params->bounds.width));
  if (params->bounds.height)
    bounds.set_height(*(params->bounds.height));

  bounds.Inset(-window->GetBaseWindow()->GetFrameInsets());
  window->GetBaseWindow()->SetBounds(bounds);
  return true;
}

bool AppCurrentWindowInternalSetIconFunction::RunWithWindow(
    ShellWindow* window) {
  if (GetCurrentChannel() > chrome::VersionInfo::CHANNEL_DEV &&
      GetExtension()->location() != extensions::Manifest::COMPONENT) {
    error_ = kDevChannelOnly;
    return false;
  }

  scoped_ptr<SetIcon::Params> params(SetIcon::Params::Create(*args_));
  CHECK(params.get());
  // The |icon_url| parameter may be a blob url (e.g. an image fetched with an
  // XMLHttpRequest) or a resource url.
  GURL url(params->icon_url);
  if (!url.is_valid())
    url = GetExtension()->GetResourceURL(params->icon_url);

  window->SetAppIconUrl(url);
  return true;
}

}  // namespace extensions