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