playlist_tree.h

// MIT License
//
// Copyright (c) 2024 Piotr Pszczółkowski
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//
// Created by Piotr Pszczółkowski on 28.10.2024.
// piotr@beesoft.pl
#pragma once

/*------- include files:
-------------------------------------------------------------------*/
#include <QTreeWidget>
#include <unordered_set>

/*------- forward declarations:
-------------------------------------------------------------------*/
class QTimer;
class QEvent;
class QShowEvent;
class QMouseEvent;
class QTreeWidgetItem;
class QContextMenuEvent;


/*------- PlayListTree ::QTreeWidget:
-------------------------------------------------------------------*/
class PlaylistTree : public QTreeWidget {
    Q_OBJECT
    enum {ID = Qt::UserRole + 1, PID, PATH};
    QTreeWidgetItem* current_selections_{};
    QTreeWidgetItem* playlists_{};
    QTimer* const timer_;
    std::unordered_set<QString> selections_{};
    QTreeWidgetItem* saved_item_{};

public:
    PlaylistTree(QWidget* = nullptr);
    ~PlaylistTree();

private:
    void contextMenuEvent(QContextMenuEvent*) override;
    void mousePressEvent(QMouseEvent*) override;
    void customEvent(QEvent*) override;
    void showEvent(QShowEvent*) override;
    void hideEvent(QHideEvent*) override;
    void focusInEvent(QFocusEvent*) override;
    void focusOutEvent(QFocusEvent*) override;

    void update_content();
    void update_playlists();
    // auto add_items_for(QTreeWidgetItem* parent) -> void;
    QTreeWidgetItem* item_for(QString&& path) const;
    void prepare_selection_to_play() const noexcept;
};