flatitemsmodelbase.cpp

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/**********************************************************************
 * LeechCraft - modular cross-platform feature rich internet client.
 * Copyright (C) 2006-2014  Georg Rudoy
 *
 * Distributed under the Boost Software License, Version 1.0.
 * (See accompanying file LICENSE or copy at https://www.boost.org/LICENSE_1_0.txt)
 **********************************************************************/
 
#include "flatitemsmodelbase.h"
#include <util/sll/logging.h>
 
namespace LC::Util
{
    FlatItemsModelBase::FlatItemsModelBase (QStringList headers, QObject *parent)
    : QAbstractItemModel { parent }
    , Headers_ { std::move (headers) }
    {
    }
 
    int FlatItemsModelBase::columnCount (const QModelIndex& index) const
    {
        return index.isValid () ? 0 : Headers_.size ();
    }
 
    QVariant FlatItemsModelBase::data (const QModelIndex& index, int role) const
    {
        if (!index.isValid ())
            return {};
 
        const auto& var = GetData (index.row (), index.column (), role);
        return var.isValid () ? var : GlobalData_.value (role);
    }
 
    QVariant FlatItemsModelBase::headerData (int section, Qt::Orientation orientation, int role) const
    {
        if (orientation != Qt::Horizontal || role != Qt::DisplayRole)
            return {};
 
        return Headers_.value (section);
    }
 
    QModelIndex FlatItemsModelBase::index (int row, int col, const QModelIndex& parent) const
    {
        return hasIndex (row, col, parent) ? createIndex (row, col) : QModelIndex {};
    }
 
    QModelIndex FlatItemsModelBase::parent (const QModelIndex&) const
    {
        return {};
    }
 
    int FlatItemsModelBase::rowCount (const QModelIndex& parent) const
    {
        return parent.isValid () ? 0 : GetItemsCount ();
    }
 
    void FlatItemsModelBase::SetGlobalData (const QVariant& data, int role)
    {
        if (data.isValid ())
            GlobalData_ [role] = data;
        else
            GlobalData_.remove (role);
 
        if (const auto rows = GetItemsCount ())
            emit dataChanged (index (0, 0), index (rows - 1, Headers_.size () - 1), { role });
    }
 
    [[noreturn, gnu::cold, gnu::noinline]]
    void FlatItemsModelBase::NotifyRowOutOfRange (const FlatItemsModelBase& model, int row, int count, const std::source_location& loc)
    {
        LogAt (loc).fatal ("row %d is out of range for %d items of %s", row, count, model.metaObject ()->className ());
    }
}