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 <kmimetype.h>
  25 #include <KDebug>
  26 #include <KGlobal>
  27 #include <KLocale>
  28 #include <KIO/MetaData>
  29 #include <QDateTime>
  30 #include <KFormat>
  31 #include <QMimeDatabase>
  32
  33 KFileItemListWidgetInformant::KFileItemListWidgetInformant() :
  34     KStandardItemListWidgetInformant()
  35 {
  36 }
  37
  38 KFileItemListWidgetInformant::~KFileItemListWidgetInformant()
  39 {
  40 }
  41
  42 QString KFileItemListWidgetInformant::itemText(int index, const KItemListView* view) const
  43 {
  44     Q_ASSERT(qobject_cast<KFileItemModel*>(view->model()));
  45     KFileItemModel* fileItemModel = static_cast<KFileItemModel*>(view->model());
  46
  47     const KFileItem item = fileItemModel->fileItem(index);
  48     return item.text();
  49 }
  50
  51 bool KFileItemListWidgetInformant::itemIsLink(int index, const KItemListView* view) const
  52 {
  53     Q_ASSERT(qobject_cast<KFileItemModel*>(view->model()));
  54     KFileItemModel* fileItemModel = static_cast<KFileItemModel*>(view->model());
  55
  56     const KFileItem item = fileItemModel->fileItem(index);
  57     return item.isLink();
  58 }
  59
  60 QString KFileItemListWidgetInformant::roleText(const QByteArray& role,
  61                                                const QHash<QByteArray, QVariant>& values) const
  62 {
  63     QString text;
  64     const QVariant roleValue = values.value(role);
  65
  66     // Implementation note: In case if more roles require a custom handling
  67     // use a hash + switch for a linear runtime.
  68
  69     if (role == "size") {
  70         if (values.value("isDir").toBool()) {
  71             // The item represents a directory. Show the number of sub directories
  72             // instead of the file size of the directory.
  73             if (!roleValue.isNull()) {
  74                 const int count = roleValue.toInt();
  75                 if (count < 0) {
  76                     text = i18nc("@item:intable", "Unknown");
  77                 } else {
  78                     text = i18ncp("@item:intable", "%1 item", "%1 items", count);
  79                 }
  80             }
  81         } else {
  82             const KIO::filesize_t size = roleValue.value<KIO::filesize_t>();
  83             text = KFormat().formatByteSize(size);
  84         }
  85     } else if (role == "date") {
  86         const QDateTime dateTime = roleValue.toDateTime();
  87         text = KLocale::global()->formatDateTime(dateTime);
  88     } else {
  89         text = KStandardItemListWidgetInformant::roleText(role, values);
  90     }
  91
  92     return text;
  93 }
  94
  95 QFont KFileItemListWidgetInformant::customizedFontForLinks(const QFont& baseFont) const
  96 {
  97     // The customized font should be italic if the file is a symbolic link.
  98     QFont font(baseFont);
  99     font.setItalic(true);
 100     return font;
 101 }
 102
 103
 104 KFileItemListWidget::KFileItemListWidget(KItemListWidgetInformant* informant, QGraphicsItem* parent) :
 105     KStandardItemListWidget(informant, parent)
 106 {
 107 }
 108
 109 KFileItemListWidget::~KFileItemListWidget()
 110 {
 111 }
 112
 113 KItemListWidgetInformant* KFileItemListWidget::createInformant()
 114 {
 115     return new KFileItemListWidgetInformant();
 116 }
 117
 118 bool KFileItemListWidget::isRoleRightAligned(const QByteArray& role) const
 119 {
 120     return role == "size";
 121 }
 122
 123 bool KFileItemListWidget::isHidden() const
 124 {
 125     return data().value("text").toString().startsWith(QLatin1Char('.'));
 126 }
 127
 128 QFont KFileItemListWidget::customizedFont(const QFont& baseFont) const
 129 {
 130     // The customized font should be italic if the file is a symbolic link.
 131     QFont font(baseFont);
 132     font.setItalic(data().value("isLink").toBool());
 133     return font;
 134 }
 135
 136 int KFileItemListWidget::selectionLength(const QString& text) const
 137 {
 138     // Select the text without MIME-type extension
 139     int selectionLength = text.length();
 140
 141     // If item is a directory, use the whole text length for
 142     // selection (ignore all points)
 143     if(data().value("isDir").toBool()) {
 144         return selectionLength;
 145     }
 146
 147     QMimeDatabase db;
 148     const QString extension = db.suffixForFileName(text);
 149     if (extension.isEmpty()) {
 150         // For an unknown extension just exclude the extension after
 151         // the last point. This does not work for multiple extensions like
 152         // *.tar.gz but usually this is anyhow a known extension.
 153         selectionLength = text.lastIndexOf(QLatin1Char('.'));
 154
 155         // If no point could be found, use whole text length for selection.
 156         if (selectionLength < 1) {
 157             selectionLength = text.length();
 158         }
 159
 160     } else {
 161         selectionLength -= extension.length() + 1;
 162     }
 163
 164     return selectionLength;
 165 }
 166