ATreeView.h

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2024 Alex2772 and Contributors
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
//
// Created by alex2 on 7/1/2021.
//
 
 
#pragma once
 
 
#include "AUI/Model/ATreeModelIndex.h"
#include "AViewContainer.h"
#include "AScrollbar.h"
#include <AUI/Model/ITreeModel.h>
 
class API_AUI_VIEWS ATreeView: public AViewContainerBase {
private:
    class ContainerView;
    class ItemView;
 
public:
    ATreeView();
    ATreeView(const _<ITreeModel<AString>>& model);
    void setModel(const _<ITreeModel<AString>>& model);
    void onScroll(const AScrollEvent& event) override;
    void setSize(glm::ivec2 size) override;
    int getContentMinimumHeight() override;
    void handleMouseMove(ItemView* pView);
 
    void setViewFactory(const std::function<_<AView>(const _<ITreeModel<AString>>&, const ATreeModelIndex&)>& viewFactory) {
        mViewFactory = viewFactory;
    }
 
    void select(const ATreeModelIndex& indexToSelect);
 
signals:
    emits<ATreeModelIndex> itemSelected;
    emits<ATreeModelIndex> itemMouseClicked;
    emits<ATreeModelIndex> itemMouseDoubleClicked;
    emits<ATreeModelIndex> itemMouseHover;
 
private:
    _<ITreeModel<AString>> mModel;
    _<ContainerView> mContent;
    _<AScrollbar> mScrollbar;
    _weak<ItemView> mPrevSelection;
 
    std::function<_<AView>(const _<ITreeModel<AString>>&, const ATreeModelIndex& index)> mViewFactory;
 
 
    void updateScrollbarDimensions();
    void handleMousePressed(ItemView* v);
    void handleMouseDoubleClicked(ItemView* v);
    void handleSelected(ItemView* v);
 
    void fillViewsRecursively(const _<AViewContainer>& content, const ATreeModelIndexOrRoot& index);
    void makeElement(const _<AViewContainer>& container, const ATreeModelIndex& childIndex, bool isGroup, const _<ATreeView::ItemView>& itemView);
    _<ItemView> indexToView(const ATreeModelIndex& target);
};