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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the examples of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "filelistmodel.h" |
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43 #include <QApplication> |
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44 #include <QPalette> |
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45 #include <QBrush> |
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46 #include <QDir> |
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47 |
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48 FileListModel::FileListModel(QObject *parent) |
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49 : QAbstractListModel(parent) |
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50 { |
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51 } |
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52 |
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53 //![4] |
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54 int FileListModel::rowCount(const QModelIndex & /* parent */) const |
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55 { |
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56 return fileCount; |
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57 } |
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58 |
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59 QVariant FileListModel::data(const QModelIndex &index, int role) const |
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60 { |
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61 if (!index.isValid()) |
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62 return QVariant(); |
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63 |
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64 if (index.row() >= fileList.size() || index.row() < 0) |
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65 return QVariant(); |
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66 |
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67 if (role == Qt::DisplayRole) |
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68 return fileList.at(index.row()); |
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69 else if (role == Qt::BackgroundRole) { |
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70 int batch = (index.row() / 100) % 2; |
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71 if (batch == 0) |
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72 return qApp->palette().base(); |
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73 else |
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74 return qApp->palette().alternateBase(); |
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75 } |
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76 return QVariant(); |
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77 } |
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78 //![4] |
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79 |
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80 //![1] |
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81 bool FileListModel::canFetchMore(const QModelIndex & /* index */) const |
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82 { |
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83 if (fileCount < fileList.size()) |
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84 return true; |
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85 else |
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86 return false; |
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87 } |
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88 //![1] |
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89 |
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90 //![2] |
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91 void FileListModel::fetchMore(const QModelIndex & /* index */) |
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92 { |
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93 int remainder = fileList.size() - fileCount; |
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94 int itemsToFetch = qMin(100, remainder); |
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95 |
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96 beginInsertRows(QModelIndex(), fileCount, fileCount+itemsToFetch); |
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97 |
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98 fileCount += itemsToFetch; |
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99 |
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100 endInsertRows(); |
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101 |
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102 emit numberPopulated(itemsToFetch); |
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103 } |
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104 //![2] |
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105 |
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106 //![0] |
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107 void FileListModel::setDirPath(const QString &path) |
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108 { |
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109 QDir dir(path); |
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110 |
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111 fileList = dir.entryList(); |
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112 fileCount = 0; |
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113 reset(); |
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114 } |
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115 //![0] |
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116 |