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// Copyright 2017 The Chromium Authors
// 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,
bool is_temporary,
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.is_temporary = is_temporary;
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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