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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 "ui/keyboard/notification_manager.h"
#include "base/observer_list.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/keyboard/keyboard_controller_observer.h"
namespace keyboard {
template <typename T>
bool ValueNotificationConsolidator<T>::ShouldSendNotification(
const T new_value) {
if (never_sent_) {
value_ = new_value;
never_sent_ = false;
return true;
}
const bool value_changed = new_value != value_;
if (value_changed) {
value_ = new_value;
}
return value_changed;
}
NotificationManager::NotificationManager() {}
void NotificationManager::SendNotifications(
bool bounds_obscure_usable_region,
bool bounds_affect_layout,
bool is_locked,
const gfx::Rect& bounds,
const base::ObserverList<KeyboardControllerObserver>& observers) {
bool is_available = !bounds.IsEmpty();
bool send_availability_notification =
ShouldSendAvailabilityNotification(is_available);
bool send_visual_bounds_notification =
ShouldSendVisualBoundsNotification(bounds);
const gfx::Rect occluded_region =
bounds_obscure_usable_region ? bounds : gfx::Rect();
bool send_occluded_bounds_notification =
ShouldSendOccludedBoundsNotification(occluded_region);
const gfx::Rect workspace_layout_offset_region =
bounds_affect_layout ? bounds : gfx::Rect();
bool send_displaced_bounds_notification =
ShouldSendWorkspaceDisplacementBoundsNotification(
workspace_layout_offset_region);
KeyboardStateDescriptor state;
state.is_available = is_available;
state.is_locked = is_locked;
state.visual_bounds = bounds;
state.occluded_bounds = occluded_region;
state.displaced_bounds = workspace_layout_offset_region;
for (KeyboardControllerObserver& observer : observers) {
if (send_availability_notification)
observer.OnKeyboardAvailabilityChanged(is_available);
if (send_visual_bounds_notification)
observer.OnKeyboardVisibleBoundsChanged(bounds);
if (send_occluded_bounds_notification)
observer.OnKeyboardWorkspaceOccludedBoundsChanged(occluded_region);
if (send_displaced_bounds_notification) {
observer.OnKeyboardWorkspaceDisplacingBoundsChanged(
workspace_layout_offset_region);
}
observer.OnKeyboardAppearanceChanged(state);
}
}
bool NotificationManager::ShouldSendAvailabilityNotification(
bool current_availability) {
return availability_.ShouldSendNotification(current_availability);
}
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));
}
const gfx::Rect NotificationManager::CanonicalizeEmptyRectangles(
const gfx::Rect rect) const {
if (rect.IsEmpty()) {
return gfx::Rect();
}
return rect;
}
} // namespace keyboard
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