Added HALF, FULLSCREEN_ALL_APPS, and FULLSCREEN_SEARCH.

ash/app_list/app_list_presenter_delegate.cc

Index: ash/app_list/app_list_presenter_delegate.cc
diff --git a/ash/app_list/app_list_presenter_delegate.cc b/ash/app_list/app_list_presenter_delegate.cc
index fc81a0ab465a3c04fea5fb455ba19c0594ed625a..759e8b959dfb1454c223896f73bb5b883aeade0e 100644
--- a/ash/app_list/app_list_presenter_delegate.cc
+++ b/ash/app_list/app_list_presenter_delegate.cc
@@ -98,7 +98,8 @@ void AppListPresenterDelegate::Init(app_list::AppListView* view,
   aura::Window* container = RootWindowController::ForWindow(root_window)
                                 ->GetContainer(kShellWindowId_AppListContainer);
 
-  view->Initialize(container, current_apps_page);
+  view->Initialize(container, current_apps_page, IsMaximizeModeActive(),
+                   IsSideShelf(root_window));

[vadimt, 2017/06/13 18:14:10]

Would it be too expensive to calculate root_window in IsSideShelf(), and not
pass it as a param?

[newcomer, 2017/06/13 18:51:45]

Done.

 
   if (!app_list::features::IsFullscreenAppListEnabled()) {
     view->MaybeSetAnchorPoint(GetCenterOfDisplayForWindow(
@@ -166,6 +167,25 @@ gfx::Vector2d AppListPresenterDelegate::GetVisibilityAnimationOffset(
   return gfx::Vector2d();
 }
 
+bool AppListPresenterDelegate::IsMaximizeModeActive() {
+  MaximizeModeController* maximize_mode_controller =
+      Shell::Get()->maximize_mode_controller();
+  return maximize_mode_controller &&

[vadimt, 2017/06/13 18:14:10]

Can it realistically be null?

[newcomer, 2017/06/13 18:51:45]

I copied that function from
https://cs.chromium.org/chromium/src/ash/system/power/tablet_power_button_con...
It's one of the last things initialized in Shell, and it is destroyed in the
middle of the destructor. So it's possible that this function is called when the
shell is getting destroyed.

+         maximize_mode_controller->IsMaximizeModeWindowManagerEnabled();
+}
+
+bool AppListPresenterDelegate::IsSideShelf(aura::Window* root_window) {
+  Shelf* shelf = Shelf::ForWindow(root_window);
+  switch (shelf->alignment()) {
+    case SHELF_ALIGNMENT_BOTTOM:
+    case SHELF_ALIGNMENT_BOTTOM_LOCKED:
+      return false;
+    case SHELF_ALIGNMENT_LEFT:
+    case SHELF_ALIGNMENT_RIGHT:
+      return true;
+  }
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // AppListPresenterDelegate, private:
 
@@ -229,4 +249,18 @@ void AppListPresenterDelegate::OnOverviewModeStarting() {
     presenter_->Dismiss();
 }
 
+void AppListPresenterDelegate::OnMaximizeModeStarted() {
+  if (!app_list::features::IsFullscreenAppListEnabled())
+    return;
+
+  view_->OnMaximizeModeChanged(true);
+}
+
+void AppListPresenterDelegate::OnMaximizeModeEnded() {
+  if (!app_list::features::IsFullscreenAppListEnabled())
+    return;
+
+  view_->OnMaximizeModeChanged(false);
+}
+
 }  // namespace ash