1/*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include "components/ui_tree_manager.h"
17
18namespace OHOS {
19UITreeManager& UITreeManager::GetInstance()
20{
21    static UITreeManager manager;
22    return manager;
23}
24
25void UITreeManager::RegistViewLifeEvent(ViewFunc* func)
26{
27    auto p = lifeEvents_.Begin();
28    if (func == nullptr) {
29        return;
30    }
31    while (p != lifeEvents_.End()) {
32        if (p->data_ == func) {
33            return;
34        }
35        p = p->next_;
36    }
37    lifeEvents_.PushBack(func);
38}
39
40void UITreeManager::UnregistViewLifeEvent(ViewFunc* func)
41{
42    auto p = lifeEvents_.Begin();
43    while (p != lifeEvents_.End()) {
44        if (p->data_ == func) {
45            lifeEvents_.Remove(p);
46            return;
47        }
48        p = p->next_;
49    }
50}
51
52void UITreeManager::GetLastEvent(UIView*& view, ViewLifeEvent& event)
53{
54    view = lastEventView_;
55    event = lastEvent_;
56}
57
58void UITreeManager::OnLifeEvent(UIView* view, ViewLifeEvent event)
59{
60    lastEventView_ = view;
61    lastEvent_ = event;
62    auto p = lifeEvents_.Begin();
63    while (p != lifeEvents_.End()) {
64        p->data_();
65        p = p->next_;
66    }
67}
68
69} // namespace OHOS
70