#include "historymodel.h"
#include <QMultiMap>
HistoryModel::HistoryModel()
{
/**
* @note historyData <QList>
* 用于存储历史记录。
* 可自由填充，我这里直接手动填充了。
*/
qsrand(uint(time(nullptr)));
for (int i = 0; i < 20; ++i) {
QString randStr;
for (int j = 0; j < 10; ++j) {
randStr += QString::number(qrand() % 10);
}
m_historyData.push_back(randStr);
}
m_data = m_historyData;
}
int HistoryModel::rowCount(const QModelIndex &parent) const
{
Q_UNUSED(parent);
return m_data.count();
}
int HistoryModel::columnCount(const QModelIndex &parent) const
{
Q_UNUSED(parent);
return 1;
}
QVariant HistoryModel::data(const QModelIndex &index, int role) const
{
if (index.row() < 0 || index.row() >= m_data.count())
return QVariant();
switch (role) {
case Qt::DisplayRole:
return m_data.at(index.row());
default:
break;
}
return QVariant();
}
void HistoryModel::sortByKey(const QString &key)
{
if (key.isEmpty()) {
beginResetModel();
m_data = m_historyData;
endResetModel();
} else {
QMultiMap<int, QString> temp;
for (auto str : m_historyData) {
int ret = str.indexOf(key);
if (ret == -1) continue;
else temp.insert(ret, str);
}
beginResetModel();
m_data.clear();
if (!temp.isEmpty()) {
//也可 for range-based
for (auto it = temp.begin(); it != temp.end(); it++) {
m_data.push_back(it.value());
}
}
endResetModel();
}
}
