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comparison examples/itemviews/editabletreemodel/mainwindow.d @ 153:ea0861a37bf6

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add editabletreemodel, still buggy
author mandel
date Tue, 16 Jun 2009 00:51:38 +0000
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152:4d1c5d1d1bbf 153:ea0861a37bf6
1 /****************************************************************************
2 **
3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: Qt Software Information (qt-info@nokia.com)
5 **
6 ** This file is part of the examples of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** Commercial Usage
10 ** Licensees holding valid Qt Commercial licenses may use this file in
11 ** accordance with the Qt Commercial License Agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and Nokia.
14 **
15 ** GNU Lesser General Public License Usage
16 ** Alternatively, this file may be used under the terms of the GNU Lesser
17 ** General Public License version 2.1 as published by the Free Software
18 ** Foundation and appearing in the file LICENSE.LGPL included in the
19 ** packaging of this file. Please review the following information to
20 ** ensure the GNU Lesser General Public License version 2.1 requirements
21 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
22 **
23 ** In addition, as a special exception, Nokia gives you certain
24 ** additional rights. These rights are described in the Nokia Qt LGPL
25 ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
26 ** package.
27 **
28 ** GNU General Public License Usage
29 ** Alternatively, this file may be used under the terms of the GNU
30 ** General Public License version 3.0 as published by the Free Software
31 ** Foundation and appearing in the file LICENSE.GPL included in the
32 ** packaging of this file. Please review the following information to
33 ** ensure the GNU General Public License version 3.0 requirements will be
34 ** met: http://www.gnu.org/copyleft/gpl.html.
35 **
36 ** If you are unsure which license is appropriate for your use, please
37 ** contact the sales department at qt-sales@nokia.com.
38 ** $QT_END_LICENSE$
39 **
40 ****************************************************************************/
41 module mainwindow;
42
43
44 import qt.core.QModelIndex;
45 import qt.core.QFile;
46 import qt.gui.QMainWindow;
47 import qt.gui.QAction;
48 import qt.gui.QTreeView;
49 import qt.gui.QWidget;
50
51 import tango.text.convert.Format;
52
53 import ui_mainwindow;
54 import mainwindow;
55 import treemodel;
56
57
58 class MainWindow : public QMainWindow
59 {
60
61 mixin Ui_MainWindow;
62
63 public:
64
65 this(QWidget parent = null)
66 {
67 super(parent);
68 setupUi(this);
69
70 string[] headers;
71 headers ~= tr("Title");
72 headers ~= tr("Description");
73
74 auto file = new QFile(":/default.txt");
75 file.open(QIODevice.ReadOnly);
76 TreeModel model = new TreeModel(headers, file.readAll().data()[0..file.size()]);
77 file.close();
78
79 view.setModel(model);
80 for (int column = 0; column < model.columnCount(); ++column)
81 view.resizeColumnToContents(column);
82
83 exitAction.triggered.connect(&QApplication.quit);
84
85 view.selectionModel().selectionChanged.connect(&this.updateActions);
86
87 actionsMenu.aboutToShow.connect(&this.updateActions);
88 insertRowAction.triggered.connect(&this.insertRow);
89 insertColumnAction.triggered.connect(&this.insertColumn);
90 removeRowAction.triggered.connect(&this.removeRow);
91 removeColumnAction.triggered.connect(&this.removeColumn);
92 insertChildAction.triggered.connect(&this.insertChild);
93
94 updateActions();
95 }
96
97 public:
98
99 void updateActions()
100 {
101 bool hasSelection = !view.selectionModel().selection().isEmpty();
102 removeRowAction.setEnabled(hasSelection);
103 removeColumnAction.setEnabled(hasSelection);
104
105 bool hasCurrent = view.selectionModel().currentIndex().isValid();
106 insertRowAction.setEnabled(hasCurrent);
107 insertColumnAction.setEnabled(hasCurrent);
108
109 if (hasCurrent) {
110 view.closePersistentEditor(view.selectionModel().currentIndex());
111
112 int row = view.selectionModel().currentIndex().row();
113 int column = view.selectionModel().currentIndex().column();
114 if (view.selectionModel().currentIndex().parent().isValid())
115 statusBar().showMessage(Format(tr("Position: ({},{})"), row, column));
116 else
117 statusBar().showMessage(Format(tr("Position: ({},{}) in top level"), row, column));
118 }
119 }
120
121 private:
122
123 void insertChild()
124 {
125 QModelIndex index = view.selectionModel().currentIndex();
126 QAbstractItemModel model = view.model();
127
128 if (model.columnCount(index) == 0) {
129 if (!model.insertColumn(0, index))
130 return;
131 }
132
133 if (!model.insertRow(0, index))
134 return;
135
136 for (int column = 0; column < model.columnCount(index); ++column) {
137 QModelIndex child = model.index(0, column, index);
138 model.setData(child, QVariant("[No data]"), Qt.EditRole);
139 if (!model.headerData(column, Qt.Horizontal).isValid())
140 model.setHeaderData(column, Qt.Horizontal, QVariant("[No header]"), Qt.EditRole);
141 }
142
143 view.selectionModel().setCurrentIndex(model.index(0, 0, index), QItemSelectionModel.ClearAndSelect);
144 updateActions();
145 }
146
147 bool insertColumn()
148 {
149 QModelIndex parent = QModelIndex(); //moved from method head
150 QAbstractItemModel model = view.model();
151 int column = view.selectionModel().currentIndex().column();
152
153 // Insert a column in the parent item.
154 bool changed = model.insertColumn(column + 1, parent);
155 if (changed)
156 model.setHeaderData(column + 1, Qt.Horizontal, QVariant("[No header]"), Qt.EditRole);
157
158 updateActions();
159
160 return changed;
161 }
162
163 void insertRow()
164 {
165 QModelIndex index = view.selectionModel().currentIndex();
166 QAbstractItemModel model = view.model();
167
168 if (!model.insertRow(index.row()+1, index.parent()))
169 return;
170
171 updateActions();
172
173 for (int column = 0; column < model.columnCount(index.parent()); ++column) {
174 QModelIndex child = model.index(index.row()+1, column, index.parent());
175 model.setData(child, QVariant("[No data]"), Qt.EditRole);
176 }
177 }
178
179 bool removeColumn()
180 {
181 QModelIndex parent = QModelIndex(); //moved from method head
182 QAbstractItemModel model = view.model();
183 int column = view.selectionModel().currentIndex().column();
184
185 // Insert columns in each child of the parent item.
186 bool changed = model.removeColumn(column, parent);
187
188 if (!parent.isValid() && changed)
189 updateActions();
190
191 return changed;
192 }
193
194 void removeRow()
195 {
196 QModelIndex index = view.selectionModel().currentIndex();
197 QAbstractItemModel model = view.model();
198 if (model.removeRow(index.row(), index.parent()))
199 updateActions();
200 }
201
202 }