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- // Copyright 2017 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 "ash/keyboard/ui/notification_manager.h"
- #include "ash/public/cpp/keyboard/keyboard_controller_observer.h"
- #include "base/observer_list.h"
- #include "ui/gfx/geometry/rect.h"
- namespace keyboard {
- template <typename T>
- ValueNotificationConsolidator<T>::ValueNotificationConsolidator(
- const T& initial_value)
- : value_(initial_value) {}
- template <typename T>
- bool ValueNotificationConsolidator<T>::ShouldSendNotification(
- const T& new_value) {
- const bool value_changed = new_value != value_;
- if (value_changed) {
- value_ = new_value;
- }
- return value_changed;
- }
- NotificationManager::NotificationManager()
- : visibility_(false),
- visual_bounds_(gfx::Rect()),
- occluded_bounds_(gfx::Rect()),
- workspace_displaced_bounds_(gfx::Rect()) {}
- void NotificationManager::SendNotifications(
- bool does_occluded_bounds_affect_layout,
- const gfx::Rect& visual_bounds,
- const gfx::Rect& occluded_bounds,
- const base::ObserverList<ash::KeyboardControllerObserver>::Unchecked&
- observers) {
- bool is_visible = !visual_bounds.IsEmpty();
- bool send_visibility_notification =
- ShouldSendVisibilityNotification(is_visible);
- bool send_visual_bounds_notification =
- ShouldSendVisualBoundsNotification(visual_bounds);
- bool send_occluded_bounds_notification =
- ShouldSendOccludedBoundsNotification(occluded_bounds);
- const gfx::Rect workspace_layout_offset_region =
- does_occluded_bounds_affect_layout ? occluded_bounds : gfx::Rect();
- bool send_displaced_bounds_notification =
- ShouldSendWorkspaceDisplacementBoundsNotification(
- workspace_layout_offset_region);
- ash::KeyboardStateDescriptor state;
- state.is_visible = is_visible;
- state.visual_bounds = visual_bounds;
- state.occluded_bounds_in_screen = occluded_bounds;
- state.displaced_bounds_in_screen = workspace_layout_offset_region;
- for (auto& observer : observers) {
- if (send_visibility_notification)
- observer.OnKeyboardVisibilityChanged(is_visible);
- if (send_visual_bounds_notification)
- observer.OnKeyboardVisibleBoundsChanged(visual_bounds);
- if (send_occluded_bounds_notification)
- observer.OnKeyboardOccludedBoundsChanged(occluded_bounds);
- if (send_displaced_bounds_notification) {
- observer.OnKeyboardDisplacingBoundsChanged(
- workspace_layout_offset_region);
- }
- observer.OnKeyboardAppearanceChanged(state);
- }
- }
- bool NotificationManager::ShouldSendVisibilityNotification(
- bool current_visibility) {
- return visibility_.ShouldSendNotification(current_visibility);
- }
- bool NotificationManager::ShouldSendVisualBoundsNotification(
- const gfx::Rect& new_bounds) {
- return visual_bounds_.ShouldSendNotification(
- CanonicalizeEmptyRectangles(new_bounds));
- }
- bool NotificationManager::ShouldSendOccludedBoundsNotification(
- const gfx::Rect& new_bounds) {
- return occluded_bounds_.ShouldSendNotification(
- CanonicalizeEmptyRectangles(new_bounds));
- }
- bool NotificationManager::ShouldSendWorkspaceDisplacementBoundsNotification(
- const gfx::Rect& new_bounds) {
- return workspace_displaced_bounds_.ShouldSendNotification(
- CanonicalizeEmptyRectangles(new_bounds));
- }
- gfx::Rect NotificationManager::CanonicalizeEmptyRectangles(
- const gfx::Rect& rect) const {
- if (rect.IsEmpty()) {
- return gfx::Rect();
- }
- return rect;
- }
- } // namespace keyboard
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