apps/app_window.cc

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This source file includes following definitions.
IsFullscreen
SetConstraintProperty
SetBoundsProperties
GetCombinedWindowConstraints
GetCombinedContentConstraints
ResetBounds
always_on_top
GetInitialWindowBounds
GetContentMinimumSize
GetContentMaximumSize
GetWindowMinimumSize
GetWindowMaximumSize
cached_always_on_top_
Init
RequestMediaAccessPermission
OpenURLFromTab
AddNewContents
PreHandleKeyboardEvent
HandleKeyboardEvent
RequestToLockMouse
PreHandleGestureEvent
DidFirstVisuallyNonEmptyPaint
OnNativeClose
OnNativeWindowChanged
OnNativeWindowActivated
web_contents
GetBaseWindow
GetNativeWindow
GetClientBounds
GetTitle
SetAppIconUrl
SetBadgeIconUrl
ClearBadge
UpdateShape
UpdateDraggableRegions
UpdateAppIcon
Fullscreen
Maximize
Minimize
Restore
OSFullscreen
ForcedFullscreen
SetContentSizeConstraints
Show
Hide
SetAlwaysOnTop
IsAlwaysOnTop
GetSerializedState
UpdateBadgeIcon
DidDownloadFavicon
OnExtensionIconImageChanged
UpdateExtensionAppIcon
SetNativeWindowFullscreen
IntersectsWithTaskbar
UpdateNativeAlwaysOnTop
CloseContents
ShouldSuppressDialogs
OpenColorChooser
RunFileChooser
IsPopupOrPanel
MoveContents
NavigationStateChanged
ToggleFullscreenModeForTab
IsFullscreenForTabOrPending
Observe
SetWebContentsBlocked
IsWebContentsVisible
GetWebContentsModalDialogHost
AddMessageToDevToolsConsole
SaveWindowPosition
AdjustBoundsToBeVisibleOnScreen
LoadDefaults
RawDraggableRegionsToSkRegion
// Copyright 2014 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 "apps/app_window.h"

#include <algorithm>

#include "apps/app_window_geometry_cache.h"
#include "apps/app_window_registry.h"
#include "apps/apps_client.h"
#include "apps/size_constraints.h"
#include "apps/ui/native_app_window.h"
#include "base/command_line.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
#include "chrome/browser/extensions/suggest_permission_util.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/extensions/manifest_handlers/icons_handler.h"
#include "components/web_modal/web_contents_modal_dialog_manager.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/invalidate_type.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/notification_details.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/notification_types.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/resource_dispatcher_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_view.h"
#include "content/public/common/media_stream_request.h"
#include "extensions/browser/extension_system.h"
#include "extensions/browser/extensions_browser_client.h"
#include "extensions/browser/process_manager.h"
#include "extensions/browser/view_type_utils.h"
#include "extensions/common/extension.h"
#include "extensions/common/extension_messages.h"
#include "third_party/skia/include/core/SkRegion.h"
#include "ui/gfx/screen.h"

#if !defined(OS_MACOSX)
#include "apps/pref_names.h"
#include "base/prefs/pref_service.h"
#endif

using content::BrowserContext;
using content::ConsoleMessageLevel;
using content::WebContents;
using extensions::APIPermission;
using web_modal::WebContentsModalDialogHost;
using web_modal::WebContentsModalDialogManager;

namespace apps {

namespace {

const int kDefaultWidth = 512;
const int kDefaultHeight = 384;

bool IsFullscreen(int fullscreen_types) {
  return fullscreen_types != apps::AppWindow::FULLSCREEN_TYPE_NONE;
}

void SetConstraintProperty(const std::string& name,
                           int value,
                           base::DictionaryValue* bounds_properties) {
  if (value != SizeConstraints::kUnboundedSize)
    bounds_properties->SetInteger(name, value);
  else
    bounds_properties->Set(name, base::Value::CreateNullValue());
}

void SetBoundsProperties(const gfx::Rect& bounds,
                         const gfx::Size& min_size,
                         const gfx::Size& max_size,
                         const std::string& bounds_name,
                         base::DictionaryValue* window_properties) {
  scoped_ptr<base::DictionaryValue> bounds_properties(
      new base::DictionaryValue());

  bounds_properties->SetInteger("left", bounds.x());
  bounds_properties->SetInteger("top", bounds.y());
  bounds_properties->SetInteger("width", bounds.width());
  bounds_properties->SetInteger("height", bounds.height());

  SetConstraintProperty("minWidth", min_size.width(), bounds_properties.get());
  SetConstraintProperty(
      "minHeight", min_size.height(), bounds_properties.get());
  SetConstraintProperty("maxWidth", max_size.width(), bounds_properties.get());
  SetConstraintProperty(
      "maxHeight", max_size.height(), bounds_properties.get());

  window_properties->Set(bounds_name, bounds_properties.release());
}

// Combines the constraints of the content and window, and returns constraints
// for the window.
gfx::Size GetCombinedWindowConstraints(const gfx::Size& window_constraints,
                                       const gfx::Size& content_constraints,
                                       const gfx::Insets& frame_insets) {
  gfx::Size combined_constraints(window_constraints);
  if (content_constraints.width() > 0) {
    combined_constraints.set_width(
        content_constraints.width() + frame_insets.width());
  }
  if (content_constraints.height() > 0) {
    combined_constraints.set_height(
        content_constraints.height() + frame_insets.height());
  }
  return combined_constraints;
}

// Combines the constraints of the content and window, and returns constraints
// for the content.
gfx::Size GetCombinedContentConstraints(const gfx::Size& window_constraints,
                                        const gfx::Size& content_constraints,
                                        const gfx::Insets& frame_insets) {
  gfx::Size combined_constraints(content_constraints);
  if (window_constraints.width() > 0) {
    combined_constraints.set_width(
        std::max(0, window_constraints.width() - frame_insets.width()));
  }
  if (window_constraints.height() > 0) {
    combined_constraints.set_height(
        std::max(0, window_constraints.height() - frame_insets.height()));
  }
  return combined_constraints;
}

}  // namespace

// AppWindow::BoundsSpecification

const int AppWindow::BoundsSpecification::kUnspecifiedPosition = INT_MIN;

AppWindow::BoundsSpecification::BoundsSpecification()
    : bounds(kUnspecifiedPosition, kUnspecifiedPosition, 0, 0) {}

AppWindow::BoundsSpecification::~BoundsSpecification() {}

void AppWindow::BoundsSpecification::ResetBounds() {
  bounds.SetRect(kUnspecifiedPosition, kUnspecifiedPosition, 0, 0);
}

// AppWindow::CreateParams

AppWindow::CreateParams::CreateParams()
    : window_type(AppWindow::WINDOW_TYPE_DEFAULT),
      frame(AppWindow::FRAME_CHROME),
      has_frame_color(false),
      transparent_background(false),
      creator_process_id(0),
      state(ui::SHOW_STATE_DEFAULT),
      hidden(false),
      resizable(true),
      focused(true),
      always_on_top(false) {}

AppWindow::CreateParams::~CreateParams() {}

gfx::Rect AppWindow::CreateParams::GetInitialWindowBounds(
    const gfx::Insets& frame_insets) const {
  // Combine into a single window bounds.
  gfx::Rect combined_bounds(window_spec.bounds);
  if (content_spec.bounds.x() != BoundsSpecification::kUnspecifiedPosition)
    combined_bounds.set_x(content_spec.bounds.x() - frame_insets.left());
  if (content_spec.bounds.y() != BoundsSpecification::kUnspecifiedPosition)
    combined_bounds.set_y(content_spec.bounds.y() - frame_insets.top());
  if (content_spec.bounds.width() > 0) {
    combined_bounds.set_width(
        content_spec.bounds.width() + frame_insets.width());
  }
  if (content_spec.bounds.height() > 0) {
    combined_bounds.set_height(
        content_spec.bounds.height() + frame_insets.height());
  }

  // Constrain the bounds.
  SizeConstraints constraints(
      GetCombinedWindowConstraints(
          window_spec.minimum_size, content_spec.minimum_size, frame_insets),
      GetCombinedWindowConstraints(
          window_spec.maximum_size, content_spec.maximum_size, frame_insets));
  combined_bounds.set_size(constraints.ClampSize(combined_bounds.size()));

  return combined_bounds;
}

gfx::Size AppWindow::CreateParams::GetContentMinimumSize(
    const gfx::Insets& frame_insets) const {
  return GetCombinedContentConstraints(window_spec.minimum_size,
                                       content_spec.minimum_size,
                                       frame_insets);
}

gfx::Size AppWindow::CreateParams::GetContentMaximumSize(
    const gfx::Insets& frame_insets) const {
  return GetCombinedContentConstraints(window_spec.maximum_size,
                                       content_spec.maximum_size,
                                       frame_insets);
}

gfx::Size AppWindow::CreateParams::GetWindowMinimumSize(
    const gfx::Insets& frame_insets) const {
  return GetCombinedWindowConstraints(window_spec.minimum_size,
                                      content_spec.minimum_size,
                                      frame_insets);
}

gfx::Size AppWindow::CreateParams::GetWindowMaximumSize(
    const gfx::Insets& frame_insets) const {
  return GetCombinedWindowConstraints(window_spec.maximum_size,
                                      content_spec.maximum_size,
                                      frame_insets);
}

// AppWindow::Delegate

AppWindow::Delegate::~Delegate() {}

// AppWindow

AppWindow::AppWindow(BrowserContext* context,
                     Delegate* delegate,
                     const extensions::Extension* extension)
    : browser_context_(context),
      extension_(extension),
      extension_id_(extension->id()),
      window_type_(WINDOW_TYPE_DEFAULT),
      delegate_(delegate),
      image_loader_ptr_factory_(this),
      fullscreen_types_(FULLSCREEN_TYPE_NONE),
      show_on_first_paint_(false),
      first_paint_complete_(false),
      cached_always_on_top_(false) {
  extensions::ExtensionsBrowserClient* client =
      extensions::ExtensionsBrowserClient::Get();
  CHECK(!client->IsGuestSession(context) || context->IsOffTheRecord())
      << "Only off the record window may be opened in the guest mode.";
}

void AppWindow::Init(const GURL& url,
                     AppWindowContents* app_window_contents,
                     const CreateParams& params) {
  // Initialize the render interface and web contents
  app_window_contents_.reset(app_window_contents);
  app_window_contents_->Initialize(browser_context(), url);
  WebContents* web_contents = app_window_contents_->GetWebContents();
  if (CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kEnableAppsShowOnFirstPaint)) {
    content::WebContentsObserver::Observe(web_contents);
  }
  delegate_->InitWebContents(web_contents);
  WebContentsModalDialogManager::CreateForWebContents(web_contents);
  // TODO(jamescook): Delegate out this creation.
  extensions::ChromeExtensionWebContentsObserver::CreateForWebContents(
      web_contents);

  web_contents->SetDelegate(this);
  WebContentsModalDialogManager::FromWebContents(web_contents)
      ->SetDelegate(this);
  extensions::SetViewType(web_contents, extensions::VIEW_TYPE_APP_WINDOW);

  // Initialize the window
  CreateParams new_params = LoadDefaults(params);
  window_type_ = new_params.window_type;
  window_key_ = new_params.window_key;

  // Windows cannot be always-on-top in fullscreen mode for security reasons.
  cached_always_on_top_ = new_params.always_on_top;
  if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
    new_params.always_on_top = false;

  native_app_window_.reset(delegate_->CreateNativeAppWindow(this, new_params));

  if (!new_params.hidden) {
    // Panels are not activated by default.
    Show(window_type_is_panel() || !new_params.focused ? SHOW_INACTIVE
                                                       : SHOW_ACTIVE);
  }

  if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
    Fullscreen();
  else if (new_params.state == ui::SHOW_STATE_MAXIMIZED)
    Maximize();
  else if (new_params.state == ui::SHOW_STATE_MINIMIZED)
    Minimize();

  OnNativeWindowChanged();

  // When the render view host is changed, the native window needs to know
  // about it in case it has any setup to do to make the renderer appear
  // properly. In particular, on Windows, the view's clickthrough region needs
  // to be set.
  extensions::ExtensionsBrowserClient* client =
      extensions::ExtensionsBrowserClient::Get();
  registrar_.Add(this,
                 chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
                 content::Source<content::BrowserContext>(
                     client->GetOriginalContext(browser_context_)));
  // Close when the browser process is exiting.
  registrar_.Add(this,
                 chrome::NOTIFICATION_APP_TERMINATING,
                 content::NotificationService::AllSources());
  // Update the app menu if an ephemeral app becomes installed.
  registrar_.Add(this,
                 chrome::NOTIFICATION_EXTENSION_INSTALLED,
                 content::Source<content::BrowserContext>(
                     client->GetOriginalContext(browser_context_)));

  app_window_contents_->LoadContents(new_params.creator_process_id);

  if (CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kEnableAppsShowOnFirstPaint)) {
    // We want to show the window only when the content has been painted. For
    // that to happen, we need to define a size for the content, otherwise the
    // layout will happen in a 0x0 area.
    // Note: WebContents::GetView() is guaranteed to be non-null.
    gfx::Insets frame_insets = native_app_window_->GetFrameInsets();
    gfx::Rect initial_bounds = new_params.GetInitialWindowBounds(frame_insets);
    initial_bounds.Inset(frame_insets);
    web_contents->GetView()->SizeContents(initial_bounds.size());
  }

  // Prevent the browser process from shutting down while this window is open.
  AppsClient::Get()->IncrementKeepAliveCount();

  UpdateExtensionAppIcon();

  AppWindowRegistry::Get(browser_context_)->AddAppWindow(this);
}

AppWindow::~AppWindow() {
  // Unregister now to prevent getting NOTIFICATION_APP_TERMINATING if we're the
  // last window open.
  registrar_.RemoveAll();

  // Remove shutdown prevention.
  AppsClient::Get()->DecrementKeepAliveCount();
}

void AppWindow::RequestMediaAccessPermission(
    content::WebContents* web_contents,
    const content::MediaStreamRequest& request,
    const content::MediaResponseCallback& callback) {
  delegate_->RequestMediaAccessPermission(
      web_contents, request, callback, extension());
}

WebContents* AppWindow::OpenURLFromTab(WebContents* source,
                                       const content::OpenURLParams& params) {
  // Don't allow the current tab to be navigated. It would be nice to map all
  // anchor tags (even those without target="_blank") to new tabs, but right
  // now we can't distinguish between those and <meta> refreshes or window.href
  // navigations, which we don't want to allow.
  // TOOD(mihaip): Can we check for user gestures instead?
  WindowOpenDisposition disposition = params.disposition;
  if (disposition == CURRENT_TAB) {
    AddMessageToDevToolsConsole(
        content::CONSOLE_MESSAGE_LEVEL_ERROR,
        base::StringPrintf(
            "Can't open same-window link to \"%s\"; try target=\"_blank\".",
            params.url.spec().c_str()));
    return NULL;
  }

  // These dispositions aren't really navigations.
  if (disposition == SUPPRESS_OPEN || disposition == SAVE_TO_DISK ||
      disposition == IGNORE_ACTION) {
    return NULL;
  }

  WebContents* contents =
      delegate_->OpenURLFromTab(browser_context_, source, params);
  if (!contents) {
    AddMessageToDevToolsConsole(
        content::CONSOLE_MESSAGE_LEVEL_ERROR,
        base::StringPrintf(
            "Can't navigate to \"%s\"; apps do not support navigation.",
            params.url.spec().c_str()));
  }

  return contents;
}

void AppWindow::AddNewContents(WebContents* source,
                               WebContents* new_contents,
                               WindowOpenDisposition disposition,
                               const gfx::Rect& initial_pos,
                               bool user_gesture,
                               bool* was_blocked) {
  DCHECK(new_contents->GetBrowserContext() == browser_context_);
  delegate_->AddNewContents(browser_context_,
                            new_contents,
                            disposition,
                            initial_pos,
                            user_gesture,
                            was_blocked);
}

bool AppWindow::PreHandleKeyboardEvent(
    content::WebContents* source,
    const content::NativeWebKeyboardEvent& event,
    bool* is_keyboard_shortcut) {
  // Here, we can handle a key event before the content gets it. When we are
  // fullscreen and it is not forced, we want to allow the user to leave
  // when ESC is pressed.
  // However, if the application has the "overrideEscFullscreen" permission, we
  // should let it override that behavior.
  // ::HandleKeyboardEvent() will only be called if the KeyEvent's default
  // action is not prevented.
  // Thus, we should handle the KeyEvent here only if the permission is not set.
  if (event.windowsKeyCode == ui::VKEY_ESCAPE &&
      (fullscreen_types_ != FULLSCREEN_TYPE_NONE) &&
      ((fullscreen_types_ & FULLSCREEN_TYPE_FORCED) == 0) &&
      !extension_->HasAPIPermission(APIPermission::kOverrideEscFullscreen)) {
    Restore();
    return true;
  }

  return false;
}

void AppWindow::HandleKeyboardEvent(
    WebContents* source,
    const content::NativeWebKeyboardEvent& event) {
  // If the window is currently fullscreen and not forced, ESC should leave
  // fullscreen.  If this code is being called for ESC, that means that the
  // KeyEvent's default behavior was not prevented by the content.
  if (event.windowsKeyCode == ui::VKEY_ESCAPE &&
      (fullscreen_types_ != FULLSCREEN_TYPE_NONE) &&
      ((fullscreen_types_ & FULLSCREEN_TYPE_FORCED) == 0)) {
    Restore();
    return;
  }

  native_app_window_->HandleKeyboardEvent(event);
}

void AppWindow::RequestToLockMouse(WebContents* web_contents,
                                   bool user_gesture,
                                   bool last_unlocked_by_target) {
  bool has_permission = IsExtensionWithPermissionOrSuggestInConsole(
      APIPermission::kPointerLock,
      extension_,
      web_contents->GetRenderViewHost());

  web_contents->GotResponseToLockMouseRequest(has_permission);
}

bool AppWindow::PreHandleGestureEvent(WebContents* source,
                                      const blink::WebGestureEvent& event) {
  // Disable pinch zooming in app windows.
  return event.type == blink::WebGestureEvent::GesturePinchBegin ||
         event.type == blink::WebGestureEvent::GesturePinchUpdate ||
         event.type == blink::WebGestureEvent::GesturePinchEnd;
}

void AppWindow::DidFirstVisuallyNonEmptyPaint(int32 page_id) {
  first_paint_complete_ = true;
  if (show_on_first_paint_) {
    DCHECK(delayed_show_type_ == SHOW_ACTIVE ||
           delayed_show_type_ == SHOW_INACTIVE);
    Show(delayed_show_type_);
  }
}

void AppWindow::OnNativeClose() {
  AppWindowRegistry::Get(browser_context_)->RemoveAppWindow(this);
  if (app_window_contents_) {
    WebContents* web_contents = app_window_contents_->GetWebContents();
    WebContentsModalDialogManager::FromWebContents(web_contents)
        ->SetDelegate(NULL);
    app_window_contents_->NativeWindowClosed();
  }
  delete this;
}

void AppWindow::OnNativeWindowChanged() {
  SaveWindowPosition();

#if defined(OS_WIN)
  if (native_app_window_ && cached_always_on_top_ &&
      !IsFullscreen(fullscreen_types_) && !native_app_window_->IsMaximized() &&
      !native_app_window_->IsMinimized()) {
    UpdateNativeAlwaysOnTop();
  }
#endif

  if (app_window_contents_ && native_app_window_)
    app_window_contents_->NativeWindowChanged(native_app_window_.get());
}

void AppWindow::OnNativeWindowActivated() {
  AppWindowRegistry::Get(browser_context_)->AppWindowActivated(this);
}

content::WebContents* AppWindow::web_contents() const {
  return app_window_contents_->GetWebContents();
}

NativeAppWindow* AppWindow::GetBaseWindow() { return native_app_window_.get(); }

gfx::NativeWindow AppWindow::GetNativeWindow() {
  return GetBaseWindow()->GetNativeWindow();
}

gfx::Rect AppWindow::GetClientBounds() const {
  gfx::Rect bounds = native_app_window_->GetBounds();
  bounds.Inset(native_app_window_->GetFrameInsets());
  return bounds;
}

base::string16 AppWindow::GetTitle() const {
  // WebContents::GetTitle() will return the page's URL if there's no <title>
  // specified. However, we'd prefer to show the name of the extension in that
  // case, so we directly inspect the NavigationEntry's title.
  base::string16 title;
  if (!web_contents() || !web_contents()->GetController().GetActiveEntry() ||
      web_contents()->GetController().GetActiveEntry()->GetTitle().empty()) {
    title = base::UTF8ToUTF16(extension()->name());
  } else {
    title = web_contents()->GetTitle();
  }
  const base::char16 kBadChars[] = {'\n', 0};
  base::RemoveChars(title, kBadChars, &title);
  return title;
}

void AppWindow::SetAppIconUrl(const GURL& url) {
  // If the same url is being used for the badge, ignore it.
  if (url == badge_icon_url_)
    return;

  // Avoid using any previous icons that were being downloaded.
  image_loader_ptr_factory_.InvalidateWeakPtrs();

  // Reset |app_icon_image_| to abort pending image load (if any).
  app_icon_image_.reset();

  app_icon_url_ = url;
  web_contents()->DownloadImage(
      url,
      true,  // is a favicon
      0,     // no maximum size
      base::Bind(&AppWindow::DidDownloadFavicon,
                 image_loader_ptr_factory_.GetWeakPtr()));
}

void AppWindow::SetBadgeIconUrl(const GURL& url) {
  // Avoid using any previous icons that were being downloaded.
  image_loader_ptr_factory_.InvalidateWeakPtrs();

  // Reset |app_icon_image_| to abort pending image load (if any).
  badge_icon_image_.reset();

  badge_icon_url_ = url;
  web_contents()->DownloadImage(
      url,
      true,  // is a favicon
      0,     // no maximum size
      base::Bind(&AppWindow::DidDownloadFavicon,
                 image_loader_ptr_factory_.GetWeakPtr()));
}

void AppWindow::ClearBadge() {
  badge_icon_image_.reset();
  badge_icon_url_ = GURL();
  UpdateBadgeIcon(gfx::Image());
}

void AppWindow::UpdateShape(scoped_ptr<SkRegion> region) {
  native_app_window_->UpdateShape(region.Pass());
}

void AppWindow::UpdateDraggableRegions(
    const std::vector<extensions::DraggableRegion>& regions) {
  native_app_window_->UpdateDraggableRegions(regions);
}

void AppWindow::UpdateAppIcon(const gfx::Image& image) {
  if (image.IsEmpty())
    return;
  app_icon_ = image;
  native_app_window_->UpdateWindowIcon();
  AppWindowRegistry::Get(browser_context_)->AppWindowIconChanged(this);
}

void AppWindow::Fullscreen() {
#if !defined(OS_MACOSX)
  // Do not enter fullscreen mode if disallowed by pref.
  PrefService* prefs =
      extensions::ExtensionsBrowserClient::Get()->GetPrefServiceForContext(
          browser_context());
  if (!prefs->GetBoolean(prefs::kAppFullscreenAllowed))
    return;
#endif
  fullscreen_types_ |= FULLSCREEN_TYPE_WINDOW_API;
  SetNativeWindowFullscreen();
}

void AppWindow::Maximize() { GetBaseWindow()->Maximize(); }

void AppWindow::Minimize() { GetBaseWindow()->Minimize(); }

void AppWindow::Restore() {
  if (IsFullscreen(fullscreen_types_)) {
    fullscreen_types_ = FULLSCREEN_TYPE_NONE;
    SetNativeWindowFullscreen();
  } else {
    GetBaseWindow()->Restore();
  }
}

void AppWindow::OSFullscreen() {
#if !defined(OS_MACOSX)
  // Do not enter fullscreen mode if disallowed by pref.
  PrefService* prefs =
      extensions::ExtensionsBrowserClient::Get()->GetPrefServiceForContext(
          browser_context());
  if (!prefs->GetBoolean(prefs::kAppFullscreenAllowed))
    return;
#endif
  fullscreen_types_ |= FULLSCREEN_TYPE_OS;
  SetNativeWindowFullscreen();
}

void AppWindow::ForcedFullscreen() {
  fullscreen_types_ |= FULLSCREEN_TYPE_FORCED;
  SetNativeWindowFullscreen();
}

void AppWindow::SetContentSizeConstraints(const gfx::Size& min_size,
                                          const gfx::Size& max_size) {
  SizeConstraints constraints(min_size, max_size);
  native_app_window_->SetContentSizeConstraints(constraints.GetMinimumSize(),
                                                constraints.GetMaximumSize());

  gfx::Rect bounds = GetClientBounds();
  gfx::Size constrained_size = constraints.ClampSize(bounds.size());
  if (bounds.size() != constrained_size) {
    bounds.set_size(constrained_size);
    bounds.Inset(-native_app_window_->GetFrameInsets());
    native_app_window_->SetBounds(bounds);
  }
  OnNativeWindowChanged();
}

void AppWindow::Show(ShowType show_type) {
  if (CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kEnableAppsShowOnFirstPaint)) {
    show_on_first_paint_ = true;

    if (!first_paint_complete_) {
      delayed_show_type_ = show_type;
      return;
    }
  }

  switch (show_type) {
    case SHOW_ACTIVE:
      GetBaseWindow()->Show();
      break;
    case SHOW_INACTIVE:
      GetBaseWindow()->ShowInactive();
      break;
  }
}

void AppWindow::Hide() {
  // This is there to prevent race conditions with Hide() being called before
  // there was a non-empty paint. It should have no effect in a non-racy
  // scenario where the application is hiding then showing a window: the second
  // show will not be delayed.
  show_on_first_paint_ = false;
  GetBaseWindow()->Hide();
}

void AppWindow::SetAlwaysOnTop(bool always_on_top) {
  if (cached_always_on_top_ == always_on_top)
    return;

  cached_always_on_top_ = always_on_top;

  // As a security measure, do not allow fullscreen windows or windows that
  // overlap the taskbar to be on top. The property will be applied when the
  // window exits fullscreen and moves away from the taskbar.
  if (!IsFullscreen(fullscreen_types_) && !IntersectsWithTaskbar())
    native_app_window_->SetAlwaysOnTop(always_on_top);

  OnNativeWindowChanged();
}

bool AppWindow::IsAlwaysOnTop() const { return cached_always_on_top_; }

void AppWindow::GetSerializedState(base::DictionaryValue* properties) const {
  DCHECK(properties);

  properties->SetBoolean("fullscreen",
                         native_app_window_->IsFullscreenOrPending());
  properties->SetBoolean("minimized", native_app_window_->IsMinimized());
  properties->SetBoolean("maximized", native_app_window_->IsMaximized());
  properties->SetBoolean("alwaysOnTop", IsAlwaysOnTop());
  properties->SetBoolean("hasFrameColor", native_app_window_->HasFrameColor());
  properties->SetInteger("frameColor", native_app_window_->FrameColor());

  gfx::Rect content_bounds = GetClientBounds();
  gfx::Size content_min_size = native_app_window_->GetContentMinimumSize();
  gfx::Size content_max_size = native_app_window_->GetContentMaximumSize();
  SetBoundsProperties(content_bounds,
                      content_min_size,
                      content_max_size,
                      "innerBounds",
                      properties);

  gfx::Insets frame_insets = native_app_window_->GetFrameInsets();
  gfx::Rect frame_bounds = native_app_window_->GetBounds();
  gfx::Size frame_min_size =
      SizeConstraints::AddFrameToConstraints(content_min_size, frame_insets);
  gfx::Size frame_max_size =
      SizeConstraints::AddFrameToConstraints(content_max_size, frame_insets);
  SetBoundsProperties(frame_bounds,
                      frame_min_size,
                      frame_max_size,
                      "outerBounds",
                      properties);
}

//------------------------------------------------------------------------------
// Private methods

void AppWindow::UpdateBadgeIcon(const gfx::Image& image) {
  badge_icon_ = image;
  native_app_window_->UpdateBadgeIcon();
}

void AppWindow::DidDownloadFavicon(
    int id,
    int http_status_code,
    const GURL& image_url,
    const std::vector<SkBitmap>& bitmaps,
    const std::vector<gfx::Size>& original_bitmap_sizes) {
  if ((image_url != app_icon_url_ && image_url != badge_icon_url_) ||
      bitmaps.empty()) {
    return;
  }

  // Bitmaps are ordered largest to smallest. Choose the smallest bitmap
  // whose height >= the preferred size.
  int largest_index = 0;
  for (size_t i = 1; i < bitmaps.size(); ++i) {
    if (bitmaps[i].height() < delegate_->PreferredIconSize())
      break;
    largest_index = i;
  }
  const SkBitmap& largest = bitmaps[largest_index];
  if (image_url == app_icon_url_) {
    UpdateAppIcon(gfx::Image::CreateFrom1xBitmap(largest));
    return;
  }

  UpdateBadgeIcon(gfx::Image::CreateFrom1xBitmap(largest));
}

void AppWindow::OnExtensionIconImageChanged(extensions::IconImage* image) {
  DCHECK_EQ(app_icon_image_.get(), image);

  UpdateAppIcon(gfx::Image(app_icon_image_->image_skia()));
}

void AppWindow::UpdateExtensionAppIcon() {
  // Avoid using any previous app icons were being downloaded.
  image_loader_ptr_factory_.InvalidateWeakPtrs();

  app_icon_image_.reset(
      new extensions::IconImage(browser_context(),
                                extension(),
                                extensions::IconsInfo::GetIcons(extension()),
                                delegate_->PreferredIconSize(),
                                extensions::IconsInfo::GetDefaultAppIcon(),
                                this));

  // Triggers actual image loading with 1x resources. The 2x resource will
  // be handled by IconImage class when requested.
  app_icon_image_->image_skia().GetRepresentation(1.0f);
}

void AppWindow::SetNativeWindowFullscreen() {
  native_app_window_->SetFullscreen(fullscreen_types_);

  if (cached_always_on_top_)
    UpdateNativeAlwaysOnTop();
}

bool AppWindow::IntersectsWithTaskbar() const {
#if defined(OS_WIN)
  gfx::Screen* screen = gfx::Screen::GetNativeScreen();
  gfx::Rect window_bounds = native_app_window_->GetRestoredBounds();
  std::vector<gfx::Display> displays = screen->GetAllDisplays();

  for (std::vector<gfx::Display>::const_iterator it = displays.begin();
       it != displays.end();
       ++it) {
    gfx::Rect taskbar_bounds = it->bounds();
    taskbar_bounds.Subtract(it->work_area());
    if (taskbar_bounds.IsEmpty())
      continue;

    if (window_bounds.Intersects(taskbar_bounds))
      return true;
  }
#endif

  return false;
}

void AppWindow::UpdateNativeAlwaysOnTop() {
  DCHECK(cached_always_on_top_);
  bool is_on_top = native_app_window_->IsAlwaysOnTop();
  bool fullscreen = IsFullscreen(fullscreen_types_);
  bool intersects_taskbar = IntersectsWithTaskbar();

  if (is_on_top && (fullscreen || intersects_taskbar)) {
    // When entering fullscreen or overlapping the taskbar, ensure windows are
    // not always-on-top.
    native_app_window_->SetAlwaysOnTop(false);
  } else if (!is_on_top && !fullscreen && !intersects_taskbar) {
    // When exiting fullscreen and moving away from the taskbar, reinstate
    // always-on-top.
    native_app_window_->SetAlwaysOnTop(true);
  }
}

void AppWindow::CloseContents(WebContents* contents) {
  native_app_window_->Close();
}

bool AppWindow::ShouldSuppressDialogs() { return true; }

content::ColorChooser* AppWindow::OpenColorChooser(
    WebContents* web_contents,
    SkColor initial_color,
    const std::vector<content::ColorSuggestion>& suggestionss) {
  return delegate_->ShowColorChooser(web_contents, initial_color);
}

void AppWindow::RunFileChooser(WebContents* tab,
                               const content::FileChooserParams& params) {
  if (window_type_is_panel()) {
    // Panels can't host a file dialog, abort. TODO(stevenjb): allow file
    // dialogs to be unhosted but still close with the owning web contents.
    // crbug.com/172502.
    LOG(WARNING) << "File dialog opened by panel.";
    return;
  }

  delegate_->RunFileChooser(tab, params);
}

bool AppWindow::IsPopupOrPanel(const WebContents* source) const { return true; }

void AppWindow::MoveContents(WebContents* source, const gfx::Rect& pos) {
  native_app_window_->SetBounds(pos);
}

void AppWindow::NavigationStateChanged(const content::WebContents* source,
                                       unsigned changed_flags) {
  if (changed_flags & content::INVALIDATE_TYPE_TITLE)
    native_app_window_->UpdateWindowTitle();
  else if (changed_flags & content::INVALIDATE_TYPE_TAB)
    native_app_window_->UpdateWindowIcon();
}

void AppWindow::ToggleFullscreenModeForTab(content::WebContents* source,
                                           bool enter_fullscreen) {
#if !defined(OS_MACOSX)
  // Do not enter fullscreen mode if disallowed by pref.
  // TODO(bartfab): Add a test once it becomes possible to simulate a user
  // gesture. http://crbug.com/174178
  PrefService* prefs =
      extensions::ExtensionsBrowserClient::Get()->GetPrefServiceForContext(
          browser_context());
  if (enter_fullscreen && !prefs->GetBoolean(prefs::kAppFullscreenAllowed)) {
    return;
  }
#endif

  if (!IsExtensionWithPermissionOrSuggestInConsole(
           APIPermission::kFullscreen,
           extension_,
           source->GetRenderViewHost())) {
    return;
  }

  if (enter_fullscreen)
    fullscreen_types_ |= FULLSCREEN_TYPE_HTML_API;
  else
    fullscreen_types_ &= ~FULLSCREEN_TYPE_HTML_API;
  SetNativeWindowFullscreen();
}

bool AppWindow::IsFullscreenForTabOrPending(const content::WebContents* source)
    const {
  return ((fullscreen_types_ & FULLSCREEN_TYPE_HTML_API) != 0);
}

void AppWindow::Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) {
  switch (type) {
    case chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED: {
      const extensions::Extension* unloaded_extension =
          content::Details<extensions::UnloadedExtensionInfo>(details)
              ->extension;
      if (extension_ == unloaded_extension)
        native_app_window_->Close();
      break;
    }
    case chrome::NOTIFICATION_EXTENSION_INSTALLED: {
      const extensions::Extension* installed_extension =
          content::Details<const extensions::InstalledExtensionInfo>(details)
              ->extension;
      DCHECK(installed_extension);
      if (installed_extension->id() == extension_->id())
        native_app_window_->UpdateShelfMenu();
      break;
    }
    case chrome::NOTIFICATION_APP_TERMINATING:
      native_app_window_->Close();
      break;
    default:
      NOTREACHED() << "Received unexpected notification";
  }
}

void AppWindow::SetWebContentsBlocked(content::WebContents* web_contents,
                                      bool blocked) {
  delegate_->SetWebContentsBlocked(web_contents, blocked);
}

bool AppWindow::IsWebContentsVisible(content::WebContents* web_contents) {
  return delegate_->IsWebContentsVisible(web_contents);
}

WebContentsModalDialogHost* AppWindow::GetWebContentsModalDialogHost() {
  return native_app_window_.get();
}

void AppWindow::AddMessageToDevToolsConsole(ConsoleMessageLevel level,
                                            const std::string& message) {
  content::RenderViewHost* rvh = web_contents()->GetRenderViewHost();
  rvh->Send(new ExtensionMsg_AddMessageToConsole(
      rvh->GetRoutingID(), level, message));
}

void AppWindow::SaveWindowPosition() {
  if (window_key_.empty())
    return;
  if (!native_app_window_)
    return;

  AppWindowGeometryCache* cache =
      AppWindowGeometryCache::Get(browser_context());

  gfx::Rect bounds = native_app_window_->GetRestoredBounds();
  gfx::Rect screen_bounds =
      gfx::Screen::GetNativeScreen()->GetDisplayMatching(bounds).work_area();
  ui::WindowShowState window_state = native_app_window_->GetRestoredState();
  cache->SaveGeometry(
      extension()->id(), window_key_, bounds, screen_bounds, window_state);
}

void AppWindow::AdjustBoundsToBeVisibleOnScreen(
    const gfx::Rect& cached_bounds,
    const gfx::Rect& cached_screen_bounds,
    const gfx::Rect& current_screen_bounds,
    const gfx::Size& minimum_size,
    gfx::Rect* bounds) const {
  *bounds = cached_bounds;

  // Reposition and resize the bounds if the cached_screen_bounds is different
  // from the current screen bounds and the current screen bounds doesn't
  // completely contain the bounds.
  if (cached_screen_bounds != current_screen_bounds &&
      !current_screen_bounds.Contains(cached_bounds)) {
    bounds->set_width(
        std::max(minimum_size.width(),
                 std::min(bounds->width(), current_screen_bounds.width())));
    bounds->set_height(
        std::max(minimum_size.height(),
                 std::min(bounds->height(), current_screen_bounds.height())));
    bounds->set_x(
        std::max(current_screen_bounds.x(),
                 std::min(bounds->x(),
                          current_screen_bounds.right() - bounds->width())));
    bounds->set_y(
        std::max(current_screen_bounds.y(),
                 std::min(bounds->y(),
                          current_screen_bounds.bottom() - bounds->height())));
  }
}

AppWindow::CreateParams AppWindow::LoadDefaults(CreateParams params)
    const {
  // Ensure width and height are specified.
  if (params.content_spec.bounds.width() == 0 &&
      params.window_spec.bounds.width() == 0) {
    params.content_spec.bounds.set_width(kDefaultWidth);
  }
  if (params.content_spec.bounds.height() == 0 &&
      params.window_spec.bounds.height() == 0) {
    params.content_spec.bounds.set_height(kDefaultHeight);
  }

  // If left and top are left undefined, the native app window will center
  // the window on the main screen in a platform-defined manner.

  // Load cached state if it exists.
  if (!params.window_key.empty()) {
    AppWindowGeometryCache* cache =
        AppWindowGeometryCache::Get(browser_context());

    gfx::Rect cached_bounds;
    gfx::Rect cached_screen_bounds;
    ui::WindowShowState cached_state = ui::SHOW_STATE_DEFAULT;
    if (cache->GetGeometry(extension()->id(),
                           params.window_key,
                           &cached_bounds,
                           &cached_screen_bounds,
                           &cached_state)) {

      // App window has cached screen bounds, make sure it fits on screen in
      // case the screen resolution changed.
      gfx::Screen* screen = gfx::Screen::GetNativeScreen();
      gfx::Display display = screen->GetDisplayMatching(cached_bounds);
      gfx::Rect current_screen_bounds = display.work_area();
      SizeConstraints constraints(params.GetWindowMinimumSize(gfx::Insets()),
                                  params.GetWindowMaximumSize(gfx::Insets()));
      AdjustBoundsToBeVisibleOnScreen(cached_bounds,
                                      cached_screen_bounds,
                                      current_screen_bounds,
                                      constraints.GetMinimumSize(),
                                      &params.window_spec.bounds);
      params.state = cached_state;

      // Since we are restoring a cached state, reset the content bounds spec to
      // ensure it is not used.
      params.content_spec.ResetBounds();
    }
  }

  return params;
}

// static
SkRegion* AppWindow::RawDraggableRegionsToSkRegion(
    const std::vector<extensions::DraggableRegion>& regions) {
  SkRegion* sk_region = new SkRegion;
  for (std::vector<extensions::DraggableRegion>::const_iterator iter =
           regions.begin();
       iter != regions.end();
       ++iter) {
    const extensions::DraggableRegion& region = *iter;
    sk_region->op(
        region.bounds.x(),
        region.bounds.y(),
        region.bounds.right(),
        region.bounds.bottom(),
        region.draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
  }
  return sk_region;
}

}  // namespace apps
/* [<][>][^][v][top][bottom][index][help] */
root/apps/app_window.cc

DEFINITIONS
