src/kitemviews/private/kfileitemmodelfilter.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Janardhan Reddy                                 *
   3  *   <annapareddyjanardhanreddy@gmail.com>                                 *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  19  ***************************************************************************/
  20
  21 #include "kfileitemmodelfilter.h"
  22
  23 #include <KFileItem>
  24
  25
  26 KFileItemModelFilter::KFileItemModelFilter() :
  27     m_useRegExp(false),
  28     m_regExp(nullptr),
  29     m_lowerCasePattern(),
  30     m_pattern()
  31 {
  32 }
  33
  34 KFileItemModelFilter::~KFileItemModelFilter()
  35 {
  36     delete m_regExp;
  37     m_regExp = nullptr;
  38 }
  39
  40 void KFileItemModelFilter::setPattern(const QString& filter)
  41 {
  42     m_pattern = filter;
  43     m_lowerCasePattern = filter.toLower();
  44
  45     if (filter.contains('*') || filter.contains('?') || filter.contains('[')) {
  46         if (!m_regExp) {
  47             m_regExp = new QRegExp();
  48             m_regExp->setCaseSensitivity(Qt::CaseInsensitive);
  49             m_regExp->setMinimal(false);
  50             m_regExp->setPatternSyntax(QRegExp::WildcardUnix);
  51         }
  52         m_regExp->setPattern(filter);
  53         m_useRegExp = m_regExp->isValid();
  54     } else {
  55         m_useRegExp = false;
  56     }
  57 }
  58
  59 QString KFileItemModelFilter::pattern() const
  60 {
  61     return m_pattern;
  62 }
  63
  64 void KFileItemModelFilter::setMimeTypes(const QStringList& types)
  65 {
  66     m_mimeTypes = types;
  67 }
  68
  69 QStringList KFileItemModelFilter::mimeTypes() const
  70 {
  71     return m_mimeTypes;
  72 }
  73
  74 bool KFileItemModelFilter::hasSetFilters() const
  75 {
  76     return (!m_pattern.isEmpty() || !m_mimeTypes.isEmpty());
  77 }
  78
  79
  80 bool KFileItemModelFilter::matches(const KFileItem& item) const
  81 {
  82     const bool hasPatternFilter = !m_pattern.isEmpty();
  83     const bool hasMimeTypesFilter = !m_mimeTypes.isEmpty();
  84
  85     // If no filter is set, return true.
  86     if (!hasPatternFilter && !hasMimeTypesFilter) {
  87         return true;
  88     }
  89
  90     // If both filters are set, return true when both filters are matched
  91     if (hasPatternFilter && hasMimeTypesFilter) {
  92         return (matchesPattern(item) && matchesType(item));
  93     }
  94
  95     // If only one filter is set, return true when that filter is matched
  96     if (hasPatternFilter) {
  97         return matchesPattern(item);
  98     }
  99
 100     return matchesType(item);
 101 }
 102
 103 bool KFileItemModelFilter::matchesPattern(const KFileItem& item) const
 104 {
 105     if (m_useRegExp) {
 106         return m_regExp->exactMatch(item.text());
 107     } else {
 108         return item.text().toLower().contains(m_lowerCasePattern);
 109     }
 110 }
 111
 112 bool KFileItemModelFilter::matchesType(const KFileItem& item) const
 113 {
 114     foreach (const QString& mimeType, m_mimeTypes) {
 115         if (item.mimetype() == mimeType) {
 116             return true;
 117         }
 118     }
 119
 120     return m_mimeTypes.isEmpty();
 121 }