modelitem.cpp

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/**********************************************************************
 * LeechCraft - modular cross-platform feature rich internet client.
 * Copyright (C) 2006-2014  Georg Rudoy
 *
 * Boost Software License - Version 1.0 - August 17th, 2003
 *
 * Permission is hereby granted, free of charge, to any person or organization
 * obtaining a copy of the software and accompanying documentation covered by
 * this license (the "Software") to use, reproduce, display, distribute,
 * execute, and transmit the Software, and to prepare derivative works of the
 * Software, and to permit third-parties to whom the Software is furnished to
 * do so, all subject to the following:
 *
 * The copyright notices in the Software and this entire statement, including
 * the above license grant, this restriction and the following disclaimer,
 * must be included in all copies of the Software, in whole or in part, and
 * all derivative works of the Software, unless such copies or derivative
 * works are solely in the form of machine-executable object code generated by
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 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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#include "modelitem.h"
#include <algorithm>
 
namespace LC
{
namespace Util
{
    ModelItem::ModelItem (QAbstractItemModel *model, const QModelIndex& idx, const ModelItem_wtr& parent)
    : ModelItemBase { parent }
    , Model_ { model }
    , SrcIdx_ { idx }
    {
    }
 
    ModelItem* ModelItem::EnsureChild (int row)
    {
        if (Children_.value (row))
            return Children_.at (row).get ();
 
        if (Children_.size () <= row)
            Children_.resize (row + 1);
 
        const auto& childIdx = Model_->index (row, 0, SrcIdx_);
        Children_ [row] = std::make_shared<ModelItem> (Model_, childIdx, shared_from_this ());
        return Children_.at (row).get ();
    }
 
    const QModelIndex& ModelItem::GetIndex () const
    {
        return SrcIdx_;
    }
 
    void ModelItem::RefreshIndex (int modelStartingRow)
    {
        if (SrcIdx_.isValid ())
            SrcIdx_ = Model_->index (GetRow () - modelStartingRow, 0, Parent_.lock ()->GetIndex ());
    }
 
    QAbstractItemModel* ModelItem::GetModel () const
    {
        return Model_;
    }
 
    ModelItem_ptr ModelItem::FindChild (QModelIndex index) const
    {
        index = index.sibling (index.row (), 0);
 
        const auto pos = std::find_if (Children_.begin (), Children_.end (),
                [&index] (const ModelItem_ptr& item) { return item->GetIndex () == index; });
        return pos == Children_.end () ? ModelItem_ptr {} : *pos;
    }
}
}