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 <QRegularExpression>
  24
  25 #include <KFileItem>
  26
  27 KFileItemModelFilter::KFileItemModelFilter() :
  28     m_useRegExp(false),
  29     m_regExp(nullptr),
  30     m_lowerCasePattern(),
  31     m_pattern()
  32 {
  33 }
  34
  35 KFileItemModelFilter::~KFileItemModelFilter()
  36 {
  37     delete m_regExp;
  38     m_regExp = nullptr;
  39 }
  40
  41 void KFileItemModelFilter::setPattern(const QString& filter)
  42 {
  43     m_pattern = filter;
  44     m_lowerCasePattern = filter.toLower();
  45
  46     if (filter.contains('*') || filter.contains('?') || filter.contains('[')) {
  47         if (!m_regExp) {
  48             m_regExp = new QRegularExpression();
  49             m_regExp->setPatternOptions(QRegularExpression::CaseInsensitiveOption);
  50         }
  51         m_regExp->setPattern(QRegularExpression::wildcardToRegularExpression(filter));
  52         m_useRegExp = m_regExp->isValid();
  53     } else {
  54         m_useRegExp = false;
  55     }
  56 }
  57
  58 QString KFileItemModelFilter::pattern() const
  59 {
  60     return m_pattern;
  61 }
  62
  63 void KFileItemModelFilter::setMimeTypes(const QStringList& types)
  64 {
  65     m_mimeTypes = types;
  66 }
  67
  68 QStringList KFileItemModelFilter::mimeTypes() const
  69 {
  70     return m_mimeTypes;
  71 }
  72
  73 bool KFileItemModelFilter::hasSetFilters() const
  74 {
  75     return (!m_pattern.isEmpty() || !m_mimeTypes.isEmpty());
  76 }
  77
  78
  79 bool KFileItemModelFilter::matches(const KFileItem& item) const
  80 {
  81     const bool hasPatternFilter = !m_pattern.isEmpty();
  82     const bool hasMimeTypesFilter = !m_mimeTypes.isEmpty();
  83
  84     // If no filter is set, return true.
  85     if (!hasPatternFilter && !hasMimeTypesFilter) {
  86         return true;
  87     }
  88
  89     // If both filters are set, return true when both filters are matched
  90     if (hasPatternFilter && hasMimeTypesFilter) {
  91         return (matchesPattern(item) && matchesType(item));
  92     }
  93
  94     // If only one filter is set, return true when that filter is matched
  95     if (hasPatternFilter) {
  96         return matchesPattern(item);
  97     }
  98
  99     return matchesType(item);
 100 }
 101
 102 bool KFileItemModelFilter::matchesPattern(const KFileItem& item) const
 103 {
 104     if (m_useRegExp) {
 105         return m_regExp->match(item.text()).hasMatch();
 106     } else {
 107         return item.text().toLower().contains(m_lowerCasePattern);
 108     }
 109 }
 110
 111 bool KFileItemModelFilter::matchesType(const KFileItem& item) const
 112 {
 113     foreach (const QString& mimeType, m_mimeTypes) {
 114         if (item.mimetype() == mimeType) {
 115             return true;
 116         }
 117     }
 118
 119     return m_mimeTypes.isEmpty();
 120 }