src/search/searchcriterionvalue.h

   1 /***************************************************************************
   2  *   Copyright (C) 2009 by Adam Kidder <thekidder@gmail.com>               *
   3  *   Copyright (C) 2009 by Peter Penz <peter.penz@gmx.at>                  *
   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 #ifndef SEARCHCRITERIONVALUE_H
  22 #define SEARCHCRITERIONVALUE_H
  23
  24 #include <QWidget>
  25
  26 class QComboBox;
  27 class KDateWidget;
  28 class KRatingWidget;
  29 class KLineEdit;
  30
  31 /**
  32  * @brief Helper class for SearchCriterionSelector.
  33  * Represents an input widget for the value of a search criterion.
  34  */
  35 class SearchCriterionValue : public QWidget
  36 {
  37     Q_OBJECT
  38
  39 public:
  40     SearchCriterionValue(QWidget* parent = 0);
  41     virtual ~SearchCriterionValue();
  42
  43     /**
  44      * Must be overwritten by derived classes and returns
  45      * the string representation of the search criterion value.
  46      */
  47     virtual QString value() const = 0;
  48
  49     /**
  50      * Initializes the widget on the base of the given value-type.
  51      * It is in the hand of the derived classes to interprete
  52      * the value-type string and create a corresponding value for
  53      * the widget (@see SearchCriterionSelector::Comparator).
  54      * The default implementation is empty.
  55      */
  56     virtual void initializeValue(const QString& valueType);
  57
  58 signals:
  59     void valueChanged(const QString& value);
  60 };
  61
  62
  63
  64 /** @brief Allows to input a date value as search criterion. */
  65 class DateValue : public SearchCriterionValue
  66 {
  67     Q_OBJECT
  68
  69 public:
  70     DateValue(QWidget* parent = 0);
  71     virtual ~DateValue();
  72     virtual QString value() const;
  73     virtual void initializeValue(const QString& valueType);
  74
  75 private:
  76     KDateWidget* m_dateWidget;
  77 };
  78
  79
  80
  81 /** @brief Allows to input a tag  as search criterion. */
  82 class TagValue : public SearchCriterionValue
  83 {
  84     Q_OBJECT
  85
  86 public:
  87     TagValue(QWidget* parent = 0);
  88     virtual ~TagValue();
  89     virtual QString value() const;
  90
  91 protected:
  92     virtual void showEvent(QShowEvent* event);
  93
  94 private:
  95     QComboBox* m_tags;
  96 };
  97
  98
  99
 100 /** @brief Allows to input a file size value as search criterion. */
 101 class SizeValue : public SearchCriterionValue
 102 {
 103     Q_OBJECT
 104
 105 public:
 106     SizeValue(QWidget* parent = 0);
 107     virtual ~SizeValue();
 108     virtual QString value() const;
 109
 110  private:
 111     KLineEdit* m_lineEdit;
 112     QComboBox* m_units;
 113 };
 114
 115 /** @brief Allows to input a rating value as search criterion. */
 116 class RatingValue : public SearchCriterionValue
 117 {
 118     Q_OBJECT
 119
 120 public:
 121     RatingValue(QWidget* parent = 0);
 122     virtual ~RatingValue();
 123     virtual QString value() const;
 124
 125  private:
 126     KRatingWidget* m_ratingWidget;
 127 };
 128
 129 #endif // SEARCHCRITERIONVALUE_H