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 ([email protected])
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6 | **
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7 | ** This file is part of the documentation of the Qt Toolkit.
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8 | **
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9 | ** $QT_BEGIN_LICENSE:LGPL$
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10 | ** Commercial Usage
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11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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12 | ** accordance with the Qt Commercial License Agreement provided with the
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13 | ** Software or, alternatively, in accordance with the terms contained in
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14 | ** a written agreement between you and Nokia.
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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 | ** GNU General Public License Usage
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29 | ** Alternatively, this file may be used under the terms of the GNU
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30 | ** General Public License version 3.0 as published by the Free Software
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31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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32 | ** packaging of this file. Please review the following information to
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33 | ** ensure the GNU General Public License version 3.0 requirements will be
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34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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35 | **
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36 | ** If you have questions regarding the use of this file, please contact
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37 | ** Nokia at [email protected].
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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 | /****************************************************************************
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43 | **
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44 | ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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45 | ** All rights reserved.
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46 | ** Contact: Nokia Corporation ([email protected])
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47 | **
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48 | ** This file is part of an example program for Qt.
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49 | ** EDITIONS: NOLIMITS
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50 | **
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51 | ****************************************************************************/
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52 |
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53 | #include <QtGui>
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54 |
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55 | #include "dragdropmodel.h"
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56 |
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57 | DragDropModel::DragDropModel(const QStringList &strings, QObject *parent)
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58 | : TreeModel(strings, parent)
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59 | {
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60 | }
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61 |
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62 | bool DragDropModel::dropMimeData(const QMimeData *data,
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63 | Qt::DropAction action, int row, int column, const QModelIndex &parent)
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64 | {
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65 | if (action == Qt::IgnoreAction)
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66 | return true;
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67 |
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68 | if (!data->hasFormat("text/plain"))
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69 | return false;
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70 |
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71 | int beginRow;
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72 |
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73 | if (row != -1)
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74 | beginRow = row;
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75 | else if (parent.isValid())
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76 | beginRow = 0;
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77 | else
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78 | beginRow = rowCount(QModelIndex());
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79 |
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80 | QByteArray encodedData = data->data("text/plain");
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81 | QDataStream stream(&encodedData, QIODevice::ReadOnly);
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82 | QHash<qint64, QMap<int,QHash<int,QString> > > newItems;
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83 |
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84 | while (!stream.atEnd()) {
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85 | qint64 id;
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86 | int row;
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87 | int column;
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88 | QString text;
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89 | stream >> id >> row >> column >> text;
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90 | newItems[id][row][column] = text;
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91 | }
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92 | int rows = newItems.count();
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93 |
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94 | insertRows(beginRow, rows, parent);
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95 | QMap<int,QHash<int,QString> > childItems;
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96 | foreach (childItems, newItems.values()) {
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97 | QHash<int,QString> rowItems;
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98 | foreach (rowItems, childItems.values()) {
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99 | foreach (int column, rowItems.keys()) {
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100 | QModelIndex idx = index(beginRow, column, parent);
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101 | setData(idx, rowItems[column]);
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102 | }
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103 | ++beginRow;
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104 | }
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105 | }
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106 |
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107 | return true;
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108 | }
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109 |
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110 | Qt::ItemFlags DragDropModel::flags(const QModelIndex &index) const
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111 | {
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112 | Qt::ItemFlags defaultFlags = TreeModel::flags(index);
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113 |
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114 | if (index.isValid())
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115 | return Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled | defaultFlags;
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116 | else
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117 | return Qt::ItemIsDropEnabled | defaultFlags;
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118 | }
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119 |
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120 | QMimeData *DragDropModel::mimeData(const QModelIndexList &indexes) const
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121 | {
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122 | QMimeData *mimeData = new QMimeData();
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123 | QByteArray encodedData;
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124 |
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125 | QDataStream stream(&encodedData, QIODevice::WriteOnly);
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126 |
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127 | foreach (QModelIndex index, indexes) {
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128 | if (index.isValid()) {
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129 | QString text = data(index, Qt::DisplayRole).toString();
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130 | stream << index.internalId() << index.row() << index.column() << text;
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131 | }
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132 | }
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133 |
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134 | mimeData->setData("text/plain", encodedData);
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135 | return mimeData;
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136 | }
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137 |
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138 | QStringList DragDropModel::mimeTypes() const
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139 | {
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140 | QStringList types;
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141 | types << "text/plain";
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142 | return types;
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143 | }
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144 |
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145 | Qt::DropActions DragDropModel::supportedDropActions() const
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146 | {
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147 | return Qt::CopyAction | Qt::MoveAction;
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148 | }
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