* Copyright (c) 2022 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "components/ui_tree_manager.h"
namespace OHOS {
UITreeManager& UITreeManager::GetInstance()
{
static UITreeManager manager;
return manager;
}
void UITreeManager::RegistViewLifeEvent(ViewFunc* func)
{
auto p = lifeEvents_.Begin();
if (func == nullptr) {
return;
}
while (p != lifeEvents_.End()) {
if (p->data_ == func) {
return;
}
p = p->next_;
}
lifeEvents_.PushBack(func);
}
void UITreeManager::UnregistViewLifeEvent(ViewFunc* func)
{
auto p = lifeEvents_.Begin();
while (p != lifeEvents_.End()) {
if (p->data_ == func) {
lifeEvents_.Remove(p);
return;
}
p = p->next_;
}
}
void UITreeManager::GetLastEvent(UIView*& view, ViewLifeEvent& event)
{
view = lastEventView_;
event = lastEvent_;
}
void UITreeManager::OnLifeEvent(UIView* view, ViewLifeEvent event)
{
lastEventView_ = view;
lastEvent_ = event;
auto p = lifeEvents_.Begin();
while (p != lifeEvents_.End()) {
p->data_();
p = p->next_;
}
}
}