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| 1 // Copyright 2017 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 "ash/tray_action/tray_action.h" | |
| 6 | |
| 7 #include <utility> | |
| 8 | |
| 9 #include "ash/tray_action/tray_action_observer.h" | |
| 10 #include "base/bind.h" | |
| 11 #include "base/callback.h" | |
| 12 #include "base/logging.h" | |
| 13 | |
| 14 namespace ash { | |
| 15 | |
| 16 TrayAction::TrayAction() = default; | |
| 17 | |
| 18 TrayAction::~TrayAction() = default; | |
| 19 | |
| 20 void TrayAction::AddObserver(TrayActionObserver* observer) { | |
| 21 observers_.AddObserver(observer); | |
| 22 } | |
| 23 | |
| 24 void TrayAction::RemoveObserver(TrayActionObserver* observer) { | |
| 25 observers_.RemoveObserver(observer); | |
| 26 } | |
| 27 | |
| 28 void TrayAction::BindRequest(mojom::TrayActionRequest request) { | |
| 29 bindings_.AddBinding(this, std::move(request)); | |
| 30 } | |
| 31 | |
| 32 mojom::TrayActionState TrayAction::GetLockScreenNoteState() { | |
| 33 if (!tray_action_client_) | |
| 34 return mojom::TrayActionState::kNotAvailable; | |
| 35 return lock_screen_note_state_; | |
| 36 } | |
| 37 | |
| 38 void TrayAction::SetClient(mojom::TrayActionClientPtr tray_action_client, | |
| 39 mojom::TrayActionState lock_screen_note_state) { | |
| 40 mojom::TrayActionState old_lock_screen_note_state = GetLockScreenNoteState(); | |
| 41 | |
| 42 tray_action_client_ = std::move(tray_action_client); | |
| 43 | |
| 44 if (tray_action_client_) { | |
| 45 // Makes sure the state is updated in case the connection is lost. | |
| 46 tray_action_client_.set_connection_error_handler( | |
| 47 base::Bind(&TrayAction::SetClient, base::Unretained(this), nullptr, | |
| 48 mojom::TrayActionState::kNotAvailable)); | |
| 49 lock_screen_note_state_ = lock_screen_note_state; | |
| 50 } | |
| 51 | |
| 52 // Setting action handler value can change effective state - notify observers | |
| 53 // if that was the case. | |
| 54 if (GetLockScreenNoteState() != old_lock_screen_note_state) | |
| 55 NotifyLockScreenNoteStateChanged(); | |
| 56 } | |
| 57 | |
| 58 void TrayAction::UpdateLockScreenNoteState(mojom::TrayActionState state) { | |
| 59 if (state == lock_screen_note_state_) | |
| 60 return; | |
| 61 | |
| 62 lock_screen_note_state_ = state; | |
| 63 | |
| 64 // If the client is not set, the effective state has not changed, so no need | |
| 65 // to notify observers of a state change. | |
| 66 if (tray_action_client_) | |
| 67 NotifyLockScreenNoteStateChanged(); | |
| 68 } | |
| 69 | |
| 70 void TrayAction::RequestNewLockScreenNote() { | |
| 71 if (GetLockScreenNoteState() != mojom::TrayActionState::kAvailable) | |
| 72 return; | |
| 73 | |
| 74 // An action state can be kAvailable only if |tray_action_client_| is set. | |
| 75 DCHECK(tray_action_client_); | |
| 76 tray_action_client_->RequestNewLockScreenNote(); | |
| 77 } | |
| 78 | |
| 79 void TrayAction::NotifyLockScreenNoteStateChanged() { | |
| 80 for (auto& observer : observers_) | |
| 81 observer.OnLockScreenNoteStateChanged(GetLockScreenNoteState()); | |
| 82 } | |
| 83 | |
| 84 } // namespace ash | |
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