src/kitemviews/kfileitemlistwidget.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com>             *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "kfileitemlistwidget.h"
  21 #include "kfileitemmodel.h"
  22 #include "kitemlistview.h"
  23
  24 #include <KLocale>
  25 #include <KIO/MetaData>
  26 #include <QDateTime>
  27 #include <KFormat>
  28 #include <QMimeDatabase>
  29
  30 KFileItemListWidgetInformant::KFileItemListWidgetInformant() :
  31     KStandardItemListWidgetInformant()
  32 {
  33 }
  34
  35 KFileItemListWidgetInformant::~KFileItemListWidgetInformant()
  36 {
  37 }
  38
  39 QString KFileItemListWidgetInformant::itemText(int index, const KItemListView* view) const
  40 {
  41     Q_ASSERT(qobject_cast<KFileItemModel*>(view->model()));
  42     KFileItemModel* fileItemModel = static_cast<KFileItemModel*>(view->model());
  43
  44     const KFileItem item = fileItemModel->fileItem(index);
  45     return item.text();
  46 }
  47
  48 bool KFileItemListWidgetInformant::itemIsLink(int index, const KItemListView* view) const
  49 {
  50     Q_ASSERT(qobject_cast<KFileItemModel*>(view->model()));
  51     KFileItemModel* fileItemModel = static_cast<KFileItemModel*>(view->model());
  52
  53     const KFileItem item = fileItemModel->fileItem(index);
  54     return item.isLink();
  55 }
  56
  57 QString KFileItemListWidgetInformant::roleText(const QByteArray& role,
  58                                                const QHash<QByteArray, QVariant>& values) const
  59 {
  60     QString text;
  61     const QVariant roleValue = values.value(role);
  62
  63     // Implementation note: In case if more roles require a custom handling
  64     // use a hash + switch for a linear runtime.
  65
  66     if (role == "size") {
  67         if (values.value("isDir").toBool()) {
  68             // The item represents a directory. Show the number of sub directories
  69             // instead of the file size of the directory.
  70             if (!roleValue.isNull()) {
  71                 const int count = roleValue.toInt();
  72                 if (count < 0) {
  73                     text = i18nc("@item:intable", "Unknown");
  74                 } else {
  75                     text = i18ncp("@item:intable", "%1 item", "%1 items", count);
  76                 }
  77             }
  78         } else {
  79             const KIO::filesize_t size = roleValue.value<KIO::filesize_t>();
  80             text = KFormat().formatByteSize(size);
  81         }
  82     } else if (role == "date") {
  83         const QDateTime dateTime = roleValue.toDateTime();
  84         text = KLocale::global()->formatDateTime(dateTime);
  85     } else {
  86         text = KStandardItemListWidgetInformant::roleText(role, values);
  87     }
  88
  89     return text;
  90 }
  91
  92 QFont KFileItemListWidgetInformant::customizedFontForLinks(const QFont& baseFont) const
  93 {
  94     // The customized font should be italic if the file is a symbolic link.
  95     QFont font(baseFont);
  96     font.setItalic(true);
  97     return font;
  98 }
  99
 100
 101 KFileItemListWidget::KFileItemListWidget(KItemListWidgetInformant* informant, QGraphicsItem* parent) :
 102     KStandardItemListWidget(informant, parent)
 103 {
 104 }
 105
 106 KFileItemListWidget::~KFileItemListWidget()
 107 {
 108 }
 109
 110 KItemListWidgetInformant* KFileItemListWidget::createInformant()
 111 {
 112     return new KFileItemListWidgetInformant();
 113 }
 114
 115 bool KFileItemListWidget::isRoleRightAligned(const QByteArray& role) const
 116 {
 117     return role == "size";
 118 }
 119
 120 bool KFileItemListWidget::isHidden() const
 121 {
 122     return data().value("text").toString().startsWith(QLatin1Char('.'));
 123 }
 124
 125 QFont KFileItemListWidget::customizedFont(const QFont& baseFont) const
 126 {
 127     // The customized font should be italic if the file is a symbolic link.
 128     QFont font(baseFont);
 129     font.setItalic(data().value("isLink").toBool());
 130     return font;
 131 }
 132
 133 int KFileItemListWidget::selectionLength(const QString& text) const
 134 {
 135     // Select the text without MIME-type extension
 136     int selectionLength = text.length();
 137
 138     // If item is a directory, use the whole text length for
 139     // selection (ignore all points)
 140     if(data().value("isDir").toBool()) {
 141         return selectionLength;
 142     }
 143
 144     QMimeDatabase db;
 145     const QString extension = db.suffixForFileName(text);
 146     if (extension.isEmpty()) {
 147         // For an unknown extension just exclude the extension after
 148         // the last point. This does not work for multiple extensions like
 149         // *.tar.gz but usually this is anyhow a known extension.
 150         selectionLength = text.lastIndexOf(QLatin1Char('.'));
 151
 152         // If no point could be found, use whole text length for selection.
 153         if (selectionLength < 1) {
 154             selectionLength = text.length();
 155         }
 156
 157     } else {
 158         selectionLength -= extension.length() + 1;
 159     }
 160
 161     return selectionLength;
 162 }
 163