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/*
* Copyright 2017 Samsung Electronics Co., Ltd
*
* Licensed under the Flora License, Version 1.1 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://floralicense.org/license/
*
* 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 "Model/DataProvider.h"
using namespace Model;
DataProvider::DataProvider()
: m_IsBusy(false), m_IsInitialized(false),
m_IsUpdateEnabled(true), m_IsUpdatePending(false),
m_IsDestroyPending(false)
{
}
DataProvider::~DataProvider()
{
for (auto &&dataItem : m_DataList) {
delete dataItem;
}
}
const DataProvider::DataList &DataProvider::getDataList()
{
return m_DataList;
}
void DataProvider::initialize(InitializeCallback callback)
{
if (m_IsInitialized || m_IsBusy) {
return;
}
m_IsBusy = true;
m_OnInitialized = std::move(callback);
startInit();
}
void DataProvider::update()
{
if (!m_IsInitialized) {
return;
}
if (!m_IsUpdateEnabled || m_IsBusy) {
m_IsUpdatePending = true;
return;
}
m_IsBusy = true;
m_IsUpdatePending = false;
m_OnUpdateStarted();
startUpdate();
}
void DataProvider::destroy()
{
if (m_IsBusy) {
m_IsDestroyPending = true;
} else {
delete this;
}
}
void DataProvider::setUpdateEnabled(bool isEnabled)
{
m_IsUpdateEnabled = isEnabled;
if (m_IsUpdateEnabled && m_IsUpdatePending) {
update();
}
}
DataProvider::InsertCallback &DataProvider::onInserted()
{
return m_OnInserted;
}
DataProvider::UpdateCallback &DataProvider::onUpdateStarted()
{
return m_OnUpdateStarted;
}
DataProvider::UpdateCallback &DataProvider::onUpdateFinished()
{
return m_OnUpdateFinished;
}
void DataProvider::insertDataItem(DataItem *dataItem)
{
dataItem->m_ChangeType = ChangeInsert;
m_DataList.push_back(dataItem);
}
void DataProvider::deleteDataItem(DataItem &dataItem)
{
dataItem.m_ChangeType = ChangeDelete;
}
void DataProvider::finishInit(DataList dataList)
{
if (m_IsDestroyPending) {
delete this;
return;
}
m_DataList = std::move(dataList);
m_IsInitialized = true;
if (m_OnInitialized) {
m_OnInitialized();
m_OnInitialized = nullptr;
}
m_IsBusy = false;
}
void DataProvider::finishUpdate()
{
if (m_IsDestroyPending) {
delete this;
return;
}
for (auto it = m_DataList.begin(); it != m_DataList.end(); ) {
auto changeType = (*it)->m_ChangeType;
(*it)->finishUpdate();
if (changeType == ChangeInsert) {
if (m_OnInserted) {
m_OnInserted(**it);
}
} else if (changeType == ChangeDelete) {
delete *it;
it = m_DataList.erase(it);
continue;
}
++it;
}
m_OnUpdateFinished();
m_IsBusy = false;
if (m_IsUpdatePending) {
update();
}
}
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