src/ui/app_list/views/app_list_view.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/app_list/views/app_list_view.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/strings/string_util.h"
   9 #include "base/win/windows_version.h"
  10 #include "ui/app_list/app_list_constants.h"
  11 #include "ui/app_list/app_list_model.h"
  12 #include "ui/app_list/app_list_view_delegate.h"
  13 #include "ui/app_list/pagination_model.h"
  14 #include "ui/app_list/signin_delegate.h"
  15 #include "ui/app_list/speech_ui_model.h"
  16 #include "ui/app_list/views/app_list_background.h"
  17 #include "ui/app_list/views/app_list_main_view.h"
  18 #include "ui/app_list/views/app_list_view_observer.h"
  19 #include "ui/app_list/views/search_box_view.h"
  20 #include "ui/app_list/views/signin_view.h"
  21 #include "ui/app_list/views/speech_view.h"
  22 #include "ui/base/ui_base_switches.h"
  23 #include "ui/compositor/layer.h"
  24 #include "ui/compositor/scoped_layer_animation_settings.h"
  25 #include "ui/gfx/image/image_skia.h"
  26 #include "ui/gfx/insets.h"
  27 #include "ui/gfx/path.h"
  28 #include "ui/gfx/skia_util.h"
  29 #include "ui/views/bubble/bubble_frame_view.h"
  30 #include "ui/views/bubble/bubble_window_targeter.h"
  31 #include "ui/views/controls/textfield/textfield.h"
  32 #include "ui/views/layout/fill_layout.h"
  33 #include "ui/views/widget/widget.h"
  34
  35 #if defined(USE_AURA)
  36 #include "ui/aura/window.h"
  37 #include "ui/aura/root_window.h"
  38 #if defined(OS_WIN)
  39 #include "ui/base/win/shell.h"
  40 #endif
  41 #if !defined(OS_CHROMEOS)
  42 #include "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
  43 #endif
  44 #endif  // defined(USE_AURA)
  45
  46 namespace app_list {
  47
  48 namespace {
  49
  50 void (*g_next_paint_callback)();
  51
  52 // The margin from the edge to the speech UI.
  53 const int kSpeechUIMargin = 12;
  54
  55 // The vertical position for the appearing animation of the speech UI.
  56 const float kSpeechUIAppearingPosition = 12;
  57
  58 // The distance between the arrow tip and edge of the anchor view.
  59 const int kArrowOffset = 10;
  60
  61 // Determines whether the current environment supports shadows bubble borders.
  62 bool SupportsShadow() {
  63 #if defined(OS_WIN)
  64   // Shadows are not supported on Windows without Aero Glass.
  65   if (!ui::win::IsAeroGlassEnabled() ||
  66       CommandLine::ForCurrentProcess()->HasSwitch(
  67           switches::kDisableDwmComposition)) {
  68     return false;
  69   }
  70 #elif defined(OS_LINUX) && !defined(USE_ASH)
  71   // Shadows are not supported on (non-ChromeOS) Linux.
  72   return false;
  73 #endif
  74   return true;
  75 }
  76
  77 }  // namespace
  78
  79 // An animation observer to hide the view at the end of the animation.
  80 class HideViewAnimationObserver : public ui::ImplicitAnimationObserver {
  81  public:
  82   HideViewAnimationObserver()
  83       : frame_(NULL),
  84         target_(NULL) {
  85   }
  86
  87   virtual ~HideViewAnimationObserver() {
  88     if (target_)
  89       StopObservingImplicitAnimations();
  90   }
  91
  92   void SetTarget(views::View* target) {
  93     if (!target_)
  94       StopObservingImplicitAnimations();
  95     target_ = target;
  96   }
  97
  98   void set_frame(views::BubbleFrameView* frame) { frame_ = frame; }
  99
 100  private:
 101   // Overridden from ui::ImplicitAnimationObserver:
 102   virtual void OnImplicitAnimationsCompleted() OVERRIDE {
 103     if (target_) {
 104       target_->SetVisible(false);
 105       target_ = NULL;
 106
 107       // Should update the background by invoking SchedulePaint().
 108       frame_->SchedulePaint();
 109     }
 110   }
 111
 112   views::BubbleFrameView* frame_;
 113   views::View* target_;
 114
 115   DISALLOW_COPY_AND_ASSIGN(HideViewAnimationObserver);
 116 };
 117
 118 ////////////////////////////////////////////////////////////////////////////////
 119 // AppListView:
 120
 121 AppListView::AppListView(AppListViewDelegate* delegate)
 122     : delegate_(delegate),
 123       app_list_main_view_(NULL),
 124       signin_view_(NULL),
 125       speech_view_(NULL),
 126       animation_observer_(new HideViewAnimationObserver()) {
 127   CHECK(delegate);
 128
 129   delegate_->AddObserver(this);
 130   delegate_->GetSpeechUI()->AddObserver(this);
 131 }
 132
 133 AppListView::~AppListView() {
 134   delegate_->GetSpeechUI()->RemoveObserver(this);
 135   delegate_->RemoveObserver(this);
 136   animation_observer_.reset();
 137   // Remove child views first to ensure no remaining dependencies on delegate_.
 138   RemoveAllChildViews(true);
 139 }
 140
 141 void AppListView::InitAsBubbleAttachedToAnchor(
 142     gfx::NativeView parent,
 143     PaginationModel* pagination_model,
 144     views::View* anchor,
 145     const gfx::Vector2d& anchor_offset,
 146     views::BubbleBorder::Arrow arrow,
 147     bool border_accepts_events) {
 148   SetAnchorView(anchor);
 149   InitAsBubbleInternal(
 150       parent, pagination_model, arrow, border_accepts_events, anchor_offset);
 151 }
 152
 153 void AppListView::InitAsBubbleAtFixedLocation(
 154     gfx::NativeView parent,
 155     PaginationModel* pagination_model,
 156     const gfx::Point& anchor_point_in_screen,
 157     views::BubbleBorder::Arrow arrow,
 158     bool border_accepts_events) {
 159   SetAnchorView(NULL);
 160   SetAnchorRect(gfx::Rect(anchor_point_in_screen, gfx::Size()));
 161   InitAsBubbleInternal(
 162       parent, pagination_model, arrow, border_accepts_events, gfx::Vector2d());
 163 }
 164
 165 void AppListView::SetBubbleArrow(views::BubbleBorder::Arrow arrow) {
 166   GetBubbleFrameView()->bubble_border()->set_arrow(arrow);
 167   SizeToContents();  // Recalcuates with new border.
 168   GetBubbleFrameView()->SchedulePaint();
 169 }
 170
 171 void AppListView::SetAnchorPoint(const gfx::Point& anchor_point) {
 172   SetAnchorRect(gfx::Rect(anchor_point, gfx::Size()));
 173 }
 174
 175 void AppListView::SetDragAndDropHostOfCurrentAppList(
 176     ApplicationDragAndDropHost* drag_and_drop_host) {
 177   app_list_main_view_->SetDragAndDropHostOfCurrentAppList(drag_and_drop_host);
 178 }
 179
 180 void AppListView::ShowWhenReady() {
 181   app_list_main_view_->ShowAppListWhenReady();
 182 }
 183
 184 void AppListView::Close() {
 185   app_list_main_view_->Close();
 186   delegate_->Dismiss();
 187 }
 188
 189 void AppListView::UpdateBounds() {
 190   SizeToContents();
 191 }
 192
 193 gfx::Size AppListView::GetPreferredSize() {
 194   return app_list_main_view_->GetPreferredSize();
 195 }
 196
 197 void AppListView::Paint(gfx::Canvas* canvas) {
 198   views::BubbleDelegateView::Paint(canvas);
 199   if (g_next_paint_callback) {
 200     g_next_paint_callback();
 201     g_next_paint_callback = NULL;
 202   }
 203 }
 204
 205 void AppListView::OnThemeChanged() {
 206 #if defined(OS_WIN)
 207   GetWidget()->Close();
 208 #endif
 209 }
 210
 211 bool AppListView::ShouldHandleSystemCommands() const {
 212   return true;
 213 }
 214
 215 void AppListView::Prerender() {
 216   app_list_main_view_->Prerender();
 217 }
 218
 219 void AppListView::OnProfilesChanged() {
 220   SigninDelegate* signin_delegate =
 221       delegate_ ? delegate_->GetSigninDelegate() : NULL;
 222   bool show_signin_view = signin_delegate && signin_delegate->NeedSignin();
 223
 224   signin_view_->SetVisible(show_signin_view);
 225   app_list_main_view_->SetVisible(!show_signin_view);
 226   app_list_main_view_->search_box_view()->InvalidateMenu();
 227 }
 228
 229 void AppListView::SetProfileByPath(const base::FilePath& profile_path) {
 230   delegate_->SetProfileByPath(profile_path);
 231   app_list_main_view_->ModelChanged();
 232 }
 233
 234 void AppListView::AddObserver(AppListViewObserver* observer) {
 235   observers_.AddObserver(observer);
 236 }
 237
 238 void AppListView::RemoveObserver(AppListViewObserver* observer) {
 239   observers_.RemoveObserver(observer);
 240 }
 241
 242 // static
 243 void AppListView::SetNextPaintCallback(void (*callback)()) {
 244   g_next_paint_callback = callback;
 245 }
 246
 247 #if defined(OS_WIN)
 248 HWND AppListView::GetHWND() const {
 249 #if defined(USE_AURA)
 250   gfx::NativeWindow window =
 251       GetWidget()->GetTopLevelWidget()->GetNativeWindow();
 252   return window->GetDispatcher()->host()->GetAcceleratedWidget();
 253 #else
 254   return GetWidget()->GetTopLevelWidget()->GetNativeWindow();
 255 #endif
 256 }
 257 #endif
 258
 259 void AppListView::InitAsBubbleInternal(gfx::NativeView parent,
 260                                        PaginationModel* pagination_model,
 261                                        views::BubbleBorder::Arrow arrow,
 262                                        bool border_accepts_events,
 263                                        const gfx::Vector2d& anchor_offset) {
 264   app_list_main_view_ = new AppListMainView(delegate_.get(),
 265                                             pagination_model,
 266                                             parent);
 267   AddChildView(app_list_main_view_);
 268 #if defined(USE_AURA)
 269   app_list_main_view_->SetPaintToLayer(true);
 270   app_list_main_view_->SetFillsBoundsOpaquely(false);
 271   app_list_main_view_->layer()->SetMasksToBounds(true);
 272 #endif
 273
 274   signin_view_ =
 275       new SigninView(delegate_->GetSigninDelegate(),
 276                      app_list_main_view_->GetPreferredSize().width());
 277   AddChildView(signin_view_);
 278
 279   // Speech recognition is available only when the start page exists.
 280   if (delegate_ && delegate_->GetSpeechRecognitionContents()) {
 281     speech_view_ = new SpeechView(delegate_.get());
 282     speech_view_->SetVisible(false);
 283 #if defined(USE_AURA)
 284     speech_view_->SetPaintToLayer(true);
 285     speech_view_->SetFillsBoundsOpaquely(false);
 286     speech_view_->layer()->SetOpacity(0.0f);
 287 #endif
 288     AddChildView(speech_view_);
 289   }
 290
 291   OnProfilesChanged();
 292   set_color(kContentsBackgroundColor);
 293   set_margins(gfx::Insets());
 294   set_move_with_anchor(true);
 295   set_parent_window(parent);
 296   set_close_on_deactivate(false);
 297   set_close_on_esc(false);
 298   set_anchor_view_insets(gfx::Insets(kArrowOffset + anchor_offset.y(),
 299                                      kArrowOffset + anchor_offset.x(),
 300                                      kArrowOffset - anchor_offset.y(),
 301                                      kArrowOffset - anchor_offset.x()));
 302   set_border_accepts_events(border_accepts_events);
 303   set_shadow(SupportsShadow() ? views::BubbleBorder::BIG_SHADOW
 304                               : views::BubbleBorder::NO_SHADOW_OPAQUE_BORDER);
 305   views::BubbleDelegateView::CreateBubble(this);
 306   SetBubbleArrow(arrow);
 307
 308 #if defined(USE_AURA)
 309   aura::Window* window = GetWidget()->GetNativeWindow();
 310   window->layer()->SetMasksToBounds(true);
 311   GetBubbleFrameView()->set_background(new AppListBackground(
 312       GetBubbleFrameView()->bubble_border()->GetBorderCornerRadius(),
 313       app_list_main_view_));
 314   set_background(NULL);
 315   window->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 316       new views::BubbleWindowTargeter(this)));
 317 #else
 318   set_background(new AppListBackground(
 319       GetBubbleFrameView()->bubble_border()->GetBorderCornerRadius(),
 320       app_list_main_view_));
 321
 322   // On non-aura the bubble has two widgets, and it's possible for the border
 323   // to be shown independently in odd situations. Explicitly hide the bubble
 324   // widget to ensure that any WM_WINDOWPOSCHANGED messages triggered by the
 325   // window manager do not have the SWP_SHOWWINDOW flag set which would cause
 326   // the border to be shown. See http://crbug.com/231687 .
 327   GetWidget()->Hide();
 328 #endif
 329
 330   if (delegate_)
 331     delegate_->ViewInitialized();
 332 }
 333
 334 void AppListView::OnBeforeBubbleWidgetInit(
 335     views::Widget::InitParams* params,
 336     views::Widget* widget) const {
 337 #if defined(USE_AURA) && !defined(OS_CHROMEOS)
 338   if (delegate_ && delegate_->ForceNativeDesktop())
 339     params->native_widget = new views::DesktopNativeWidgetAura(widget);
 340 #endif
 341 #if defined(OS_WIN)
 342   // Windows 7 and higher offer pinning to the taskbar, but we need presence
 343   // on the taskbar for the user to be able to pin us. So, show the window on
 344   // the taskbar for these versions of Windows.
 345   if (base::win::GetVersion() >= base::win::VERSION_WIN7)
 346     params->force_show_in_taskbar = true;
 347 #elif defined(OS_LINUX)
 348   // Set up a custom WM_CLASS for the app launcher window. This allows task
 349   // switchers in X11 environments to distinguish it from main browser windows.
 350   params->wm_class_name = kAppListWMClass;
 351   // Show the window in the taskbar, even though it is a bubble, which would not
 352   // normally be shown.
 353   params->force_show_in_taskbar = true;
 354 #endif
 355 }
 356
 357 views::View* AppListView::GetInitiallyFocusedView() {
 358   return app_list_main_view_->search_box_view()->search_box();
 359 }
 360
 361 gfx::ImageSkia AppListView::GetWindowIcon() {
 362   if (delegate_)
 363     return delegate_->GetWindowIcon();
 364
 365   return gfx::ImageSkia();
 366 }
 367
 368 bool AppListView::WidgetHasHitTestMask() const {
 369   return true;
 370 }
 371
 372 void AppListView::GetWidgetHitTestMask(gfx::Path* mask) const {
 373   DCHECK(mask);
 374   mask->addRect(gfx::RectToSkRect(
 375       GetBubbleFrameView()->GetContentsBounds()));
 376 }
 377
 378 bool AppListView::AcceleratorPressed(const ui::Accelerator& accelerator) {
 379   // The accelerator is added by BubbleDelegateView.
 380   if (accelerator.key_code() == ui::VKEY_ESCAPE) {
 381     if (app_list_main_view_->search_box_view()->HasSearch()) {
 382       app_list_main_view_->search_box_view()->ClearSearch();
 383     } else {
 384       GetWidget()->Deactivate();
 385       Close();
 386     }
 387     return true;
 388   }
 389
 390   return false;
 391 }
 392
 393 void AppListView::Layout() {
 394   const gfx::Rect contents_bounds = GetContentsBounds();
 395   app_list_main_view_->SetBoundsRect(contents_bounds);
 396   signin_view_->SetBoundsRect(contents_bounds);
 397
 398   if (speech_view_) {
 399     gfx::Rect speech_bounds = contents_bounds;
 400     int preferred_height = speech_view_->GetPreferredSize().height();
 401     speech_bounds.Inset(kSpeechUIMargin, kSpeechUIMargin);
 402     speech_bounds.set_height(std::min(speech_bounds.height(),
 403                                       preferred_height));
 404     speech_bounds.Inset(-speech_view_->GetInsets());
 405     speech_view_->SetBoundsRect(speech_bounds);
 406   }
 407 }
 408
 409 void AppListView::OnWidgetDestroying(views::Widget* widget) {
 410   BubbleDelegateView::OnWidgetDestroying(widget);
 411   if (delegate_ && widget == GetWidget())
 412     delegate_->ViewClosing();
 413 }
 414
 415 void AppListView::OnWidgetActivationChanged(views::Widget* widget,
 416                                             bool active) {
 417   // Do not called inherited function as the bubble delegate auto close
 418   // functionality is not used.
 419   if (widget == GetWidget())
 420     FOR_EACH_OBSERVER(AppListViewObserver, observers_,
 421                       OnActivationChanged(widget, active));
 422 }
 423
 424 void AppListView::OnWidgetVisibilityChanged(views::Widget* widget,
 425                                             bool visible) {
 426   BubbleDelegateView::OnWidgetVisibilityChanged(widget, visible);
 427
 428   if (widget != GetWidget())
 429     return;
 430
 431   // We clear the search when hiding so the next time the app list appears it is
 432   // not showing search results.
 433   if (!visible)
 434     app_list_main_view_->search_box_view()->ClearSearch();
 435
 436   // Whether we need to signin or not may have changed since last time we were
 437   // shown.
 438   Layout();
 439 }
 440
 441 void AppListView::OnSpeechRecognitionStateChanged(
 442     SpeechRecognitionState new_state) {
 443   if (signin_view_->visible() || !speech_view_)
 444     return;
 445
 446   bool recognizing = (new_state == SPEECH_RECOGNITION_RECOGNIZING ||
 447                       new_state == SPEECH_RECOGNITION_IN_SPEECH);
 448   // No change for this class.
 449   if (speech_view_->visible() == recognizing)
 450     return;
 451
 452   if (recognizing)
 453     speech_view_->Reset();
 454
 455 #if defined(USE_AURA)
 456   animation_observer_->set_frame(GetBubbleFrameView());
 457   gfx::Transform speech_transform;
 458   speech_transform.Translate(
 459       0, SkFloatToMScalar(kSpeechUIAppearingPosition));
 460   if (recognizing)
 461     speech_view_->layer()->SetTransform(speech_transform);
 462
 463   {
 464     ui::ScopedLayerAnimationSettings main_settings(
 465         app_list_main_view_->layer()->GetAnimator());
 466     if (recognizing) {
 467       animation_observer_->SetTarget(app_list_main_view_);
 468       main_settings.AddObserver(animation_observer_.get());
 469     }
 470     app_list_main_view_->layer()->SetOpacity(recognizing ? 0.0f : 1.0f);
 471   }
 472
 473   {
 474     ui::ScopedLayerAnimationSettings speech_settings(
 475         speech_view_->layer()->GetAnimator());
 476     if (!recognizing) {
 477       animation_observer_->SetTarget(speech_view_);
 478       speech_settings.AddObserver(animation_observer_.get());
 479     }
 480
 481     speech_view_->layer()->SetOpacity(recognizing ? 1.0f : 0.0f);
 482     if (recognizing)
 483       speech_view_->layer()->SetTransform(gfx::Transform());
 484     else
 485       speech_view_->layer()->SetTransform(speech_transform);
 486   }
 487
 488   if (recognizing)
 489     speech_view_->SetVisible(true);
 490   else
 491     app_list_main_view_->SetVisible(true);
 492 #else
 493   speech_view_->SetVisible(recognizing);
 494   app_list_main_view_->SetVisible(!recognizing);
 495
 496   // Needs to schedule paint of AppListView itself, to repaint the background.
 497   GetBubbleFrameView()->SchedulePaint();
 498 #endif
 499 }
 500
 501 }  // namespace app_list