File indexing completed on 2024-05-19 05:42:13
0001 // ct_lvtmdl_historylistmodel.cpp -*-C++-*- 0002 0003 /* 0004 // Copyright 2023 Codethink Ltd <codethink@codethink.co.uk> 0005 // SPDX-License-Identifier: Apache-2.0 0006 // 0007 // Licensed under the Apache License, Version 2.0 (the "License"); 0008 // you may not use this file except in compliance with the License. 0009 // You may obtain a copy of the License at 0010 // 0011 // http://www.apache.org/licenses/LICENSE-2.0 0012 // 0013 // Unless required by applicable law or agreed to in writing, software 0014 // distributed under the License is distributed on an "AS IS" BASIS, 0015 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 0016 // See the License for the specific language governing permissions and 0017 // limitations under the License. 0018 */ 0019 #include <ct_lvtmdl_historylistmodel.h> 0020 0021 #include <QString> 0022 0023 #include <QDebug> 0024 0025 namespace Codethink::lvtmdl { 0026 0027 struct HistoryListModel::Private { 0028 int currentIndex = -1; 0029 int maximumHistory = 10; 0030 std::vector<QString> bookmarkHistory; 0031 }; 0032 0033 HistoryListModel::HistoryListModel(QObject *parent): 0034 QAbstractListModel(parent), d(std::make_unique<HistoryListModel::Private>()) 0035 { 0036 } 0037 0038 HistoryListModel::~HistoryListModel() noexcept = default; 0039 0040 int HistoryListModel::currentIndex() const 0041 { 0042 return d->currentIndex; 0043 } 0044 0045 void HistoryListModel::setCurrentIndex(int idx) 0046 { 0047 if (d->currentIndex == idx) { 0048 qDebug() << "Current index is the same, returning"; 0049 return; 0050 } 0051 qDebug() << "Current index changed to " << idx; 0052 d->currentIndex = idx; 0053 Q_EMIT currentIndexChanged(idx); 0054 } 0055 0056 void HistoryListModel::next() 0057 { 0058 if (currentIndex() + 1 < rowCount()) { 0059 qDebug() << "Setting current index to" << currentIndex() + 1; 0060 setCurrentIndex(currentIndex() + 1); 0061 } 0062 } 0063 0064 void HistoryListModel::previous() 0065 { 0066 if (currentIndex() - 1 >= 0 && rowCount() > 0) { 0067 qDebug() << "Setting current index to" << currentIndex() - 1; 0068 setCurrentIndex(currentIndex() - 1); 0069 } 0070 } 0071 0072 void HistoryListModel::append(const QString& bookmarkName) 0073 { 0074 qDebug() << "Adding " << bookmarkName << "on the history model"; 0075 beginInsertRows({}, rowCount(), rowCount()); 0076 d->bookmarkHistory.push_back(bookmarkName); 0077 assert(d->bookmarkHistory.size() < (std::size_t) INT_MAX); 0078 d->currentIndex = static_cast<int>(d->bookmarkHistory.size()) - 1; 0079 endInsertRows(); 0080 } 0081 0082 void HistoryListModel::setMaximumHistory(int maximum) 0083 { 0084 d->maximumHistory = maximum; 0085 if ((int) d->bookmarkHistory.size() > maximum) { 0086 beginResetModel(); 0087 d->bookmarkHistory.resize(maximum); 0088 d->bookmarkHistory.shrink_to_fit(); 0089 endResetModel(); 0090 } 0091 } 0092 0093 int HistoryListModel::rowCount(const QModelIndex& parent) const 0094 { 0095 Q_UNUSED(parent); 0096 const std::size_t size = d->bookmarkHistory.size(); 0097 assert(size <= (std::size_t) INT_MAX); 0098 return static_cast<int>(size); 0099 } 0100 0101 QVariant HistoryListModel::data(const QModelIndex& idx, int role) const 0102 { 0103 if (role != Qt::DisplayRole) { 0104 return {}; 0105 } 0106 0107 if (!idx.isValid()) { 0108 return {}; 0109 } 0110 0111 if (idx.row() > rowCount()) { 0112 return {}; 0113 } 0114 0115 return d->bookmarkHistory[idx.row()]; 0116 } 0117 0118 QString Codethink::lvtmdl::HistoryListModel::at(int idx) const 0119 { 0120 if (idx >= rowCount()) { 0121 return {}; 0122 } 0123 return d->bookmarkHistory[idx]; 0124 } 0125 0126 } // namespace Codethink::lvtmdl