159 lines
4.0 KiB
C++
159 lines
4.0 KiB
C++
/*
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* Strawberry Music Player
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* This file was part of Clementine.
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* Copyright 2010, David Sansome <me@davidsansome.com>
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* Copyright 2018-2021, Jonas Kvinge <jonas@jkvinge.net>
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*
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* Strawberry is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Strawberry is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef SIMPLETREEITEM_H
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#define SIMPLETREEITEM_H
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#include "config.h"
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#include <QList>
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#include <QString>
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#include <QAbstractItemModel>
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#include "simpletreemodel.h"
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template<typename T>
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class SimpleTreeItem {
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public:
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explicit SimpleTreeItem(int _type, SimpleTreeModel<T> *_model); // For the root item
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explicit SimpleTreeItem(int _type, const QString &_key, T *_parent = nullptr);
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explicit SimpleTreeItem(int _type, T *_parent = nullptr);
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virtual ~SimpleTreeItem();
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void InsertNotify(T *_parent);
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void DeleteNotify(int child_row);
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void ClearNotify();
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void ChangedNotify();
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void Delete(int child_row);
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T *ChildByKey(const QString &key) const;
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QString DisplayText() const { return display_text; }
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QString SortText() const { return sort_text; }
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int type;
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QString key;
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QString sort_text;
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QString display_text;
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int row;
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T *parent;
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QList<T*> children;
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QAbstractItemModel *child_model;
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SimpleTreeModel<T> *model;
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};
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template<typename T>
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SimpleTreeItem<T>::SimpleTreeItem(int _type, SimpleTreeModel<T> *_model)
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: type(_type),
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row(0),
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parent(nullptr),
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child_model(nullptr),
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model(_model) {}
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template<typename T>
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SimpleTreeItem<T>::SimpleTreeItem(int _type, const QString &_key, T *_parent)
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: type(_type),
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key(_key),
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parent(_parent),
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child_model(nullptr),
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model(_parent ? _parent->model : nullptr) {
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if (parent) {
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row = parent->children.count();
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parent->children << static_cast<T*>(this);
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}
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}
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template<typename T>
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SimpleTreeItem<T>::SimpleTreeItem(int _type, T *_parent)
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: type(_type),
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parent(_parent),
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child_model(nullptr),
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model(_parent ? _parent->model : nullptr) {
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if (parent) {
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row = parent->children.count();
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parent->children << static_cast<T*>(this);
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}
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}
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template<typename T>
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void SimpleTreeItem<T>::InsertNotify(T *_parent) {
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parent = _parent;
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model = parent->model;
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row = parent->children.count();
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model->BeginInsert(parent, row);
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parent->children << static_cast<T*>(this);
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model->EndInsert();
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}
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template<typename T>
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void SimpleTreeItem<T>::DeleteNotify(int child_row) {
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model->BeginDelete(static_cast<T*>(this), child_row);
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delete children.takeAt(child_row);
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// Adjust row numbers of those below it :(
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for (int i = child_row; i < children.count(); ++i) children[i]->row--;
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model->EndDelete();
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}
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template<typename T>
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void SimpleTreeItem<T>::ClearNotify() {
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if (children.count()) {
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model->BeginDelete(static_cast<T*>(this), 0, children.count() - 1);
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qDeleteAll(children);
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children.clear();
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model->EndDelete();
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}
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}
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template<typename T>
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void SimpleTreeItem<T>::ChangedNotify() {
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model->EmitDataChanged(static_cast<T*>(this));
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}
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template<typename T>
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SimpleTreeItem<T>::~SimpleTreeItem() {
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qDeleteAll(children);
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}
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template<typename T>
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void SimpleTreeItem<T>::Delete(int child_row) {
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delete children.takeAt(child_row);
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// Adjust row numbers of those below it :(
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for (int i = child_row; i < children.count(); ++i) children[i]->row--;
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}
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template<typename T>
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T *SimpleTreeItem<T>::ChildByKey(const QString &_key) const {
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for (T *child : children) {
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if (child->key == _key) return child;
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}
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return nullptr;
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}
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#endif // SIMPLETREEITEM_H
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