tagsfiltermodel.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
 * a source language processor.
 *
 * 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, TITLE AND NON-INFRINGEMENT. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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 * DEALINGS IN THE SOFTWARE.
 **********************************************************************/
 
#include <QStringList>
#include <QtDebug>
#include "tagsfiltermodel.h"
 
namespace LC
{
namespace Util
{
    TagsFilterModel::TagsFilterModel (QObject *parent)
    : QSortFilterProxyModel (parent)
    , NormalMode_ (true)
    , Separator_ (";")
    , TagsMode_ (TagsInclusionMode::All)
    {
    }
 
    void TagsFilterModel::SetSeparator (const QString& separator)
    {
        Separator_ = separator;
 
        if (dynamicSortFilter ())
            invalidateFilter ();
    }
 
    void TagsFilterModel::SetTagsInclusionMode (TagsFilterModel::TagsInclusionMode mode)
    {
        TagsMode_ = mode;
 
        if (dynamicSortFilter ())
            invalidateFilter ();
    }
 
    void TagsFilterModel::setTagsMode (bool tags)
    {
        NormalMode_ = !tags;
 
        if (dynamicSortFilter ())
            invalidateFilter ();
    }
 
    void TagsFilterModel::enableTagsMode ()
    {
        setTagsMode (true);
    }
 
    void TagsFilterModel::disableTagsMode ()
    {
        setTagsMode (false);
    }
 
    bool TagsFilterModel::filterAcceptsRow (int source_row, const QModelIndex& index) const
    {
        if (NormalMode_)
        {
            if (index.isValid () && sourceModel ()->rowCount (index))
                return true;
 
            const auto& pattern = filterRegExp ().pattern ();
            if (pattern.isEmpty ())
                return true;
 
            for (int i = 0, cc = sourceModel ()->columnCount (index); i < cc; ++i)
            {
                const auto& rowIdx = sourceModel ()->index (source_row, i, index);
                const auto& str = rowIdx.data ().toString ();
                if (str.contains (pattern) || filterRegExp ().exactMatch (str))
                    return true;
            }
 
            return false;
        }
        else
        {
            QStringList filterTags;
            const auto& pattern = filterRegExp ().pattern ();
            for (const auto& s : pattern.split (Separator_, QString::SkipEmptyParts))
                filterTags << s.trimmed ();
 
            if (!filterTags.size ())
                return true;
 
            const auto& itemTags = GetTagsForIndex (source_row);
            for (int i = 0; i < filterTags.size (); ++i)
            {
                bool found = false;
                for (int j = 0; j < itemTags.size (); ++j)
                    if (itemTags.at (j).contains (filterTags.at (i)))
                    {
                        found = true;
                        break;
                    }
                if (!found)
                    return false;
                else if (TagsMode_ == TagsInclusionMode::Any)
                    return true;
            }
            return true;
        }
    }
}
}