QGIS API Documentation 3.34.0-Prizren (ffbdd678812)
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qgslistwidget.cpp
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1/***************************************************************************
2 qgslistwidget.cpp
3 --------------------------------------
4 Date : 08.2016
5 Copyright : (C) 2016 Patrick Valsecchi
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
16#include "qgslistwidget.h"
17
18QgsListWidget::QgsListWidget( QVariant::Type subType, QWidget *parent )
19 : QgsTableWidgetBase( parent )
20 , mModel( subType, this )
21 , mSubType( subType )
22{
23 init( &mModel );
24}
25
26void QgsListWidget::setList( const QVariantList &list )
27{
28 removeButton->setEnabled( false );
29 mModel.setList( list );
30}
31
32
34QgsListModel::QgsListModel( QVariant::Type subType, QObject *parent ) :
35 QAbstractTableModel( parent ),
36 mSubType( subType )
37{
38}
39
40void QgsListModel::setList( const QVariantList &list )
41{
42 beginResetModel();
43 mLines = list;
44 endResetModel();
45}
46
47QVariantList QgsListModel::list() const
48{
49 QVariantList result;
50 for ( QVariantList::const_iterator it = mLines.constBegin(); it != mLines.constEnd(); ++it )
51 {
52 QVariant cur = *it;
53 if ( cur.convert( mSubType ) )
54 result.append( cur );
55 }
56 return result;
57}
58
59bool QgsListModel::valid() const
60{
61 for ( QVariantList::const_iterator it = mLines.constBegin(); it != mLines.constEnd(); ++it )
62 {
63 QVariant cur = *it;
64 if ( !cur.convert( mSubType ) ) return false;
65 }
66 return true;
67}
68
69int QgsListModel::rowCount( const QModelIndex &parent ) const
70{
71 Q_UNUSED( parent )
72 return mLines.count();
73}
74
75int QgsListModel::columnCount( const QModelIndex &parent ) const
76{
77 Q_UNUSED( parent )
78 return 1;
79}
80
81QVariant QgsListModel::headerData( int section, Qt::Orientation orientation, int role ) const
82{
83 if ( orientation == Qt::Horizontal && role == Qt::DisplayRole && section == 0 )
84 {
85 return QObject::tr( "Value" );
86 }
87 return QVariant();
88}
89
90QVariant QgsListModel::data( const QModelIndex &index, int role ) const
91{
92 if ( index.row() < 0 ||
93 index.row() >= mLines.count() ||
94 ( role != Qt::DisplayRole && role != Qt::EditRole ) ||
95 index.column() != 0 )
96 {
97 return QVariant( mSubType );
98 }
99 return mLines.at( index.row() );
100}
101
102bool QgsListModel::setData( const QModelIndex &index, const QVariant &value, int role )
103{
104 if ( index.row() < 0 || index.row() >= mLines.count() ||
105 index.column() != 0 || role != Qt::EditRole )
106 {
107 return false;
108 }
109 mLines[index.row()] = value.toString();
110 emit dataChanged( index, index );
111 return true;
112}
113
114Qt::ItemFlags QgsListModel::flags( const QModelIndex &index ) const
115{
116 return QAbstractTableModel::flags( index ) | Qt::ItemIsEditable;
117}
118
119bool QgsListModel::insertRows( int position, int rows, const QModelIndex &parent )
120{
121 Q_UNUSED( parent )
122 beginInsertRows( QModelIndex(), position, position + rows - 1 );
123 for ( int i = 0; i < rows; ++i )
124 {
125 mLines.insert( position, QVariant( mSubType ) );
126 }
127 endInsertRows();
128 return true;
129}
130
131bool QgsListModel::removeRows( int position, int rows, const QModelIndex &parent )
132{
133 Q_UNUSED( parent )
134 beginRemoveRows( QModelIndex(), position, position + rows - 1 );
135 for ( int i = 0; i < rows; ++i )
136 mLines.removeAt( position );
137 endRemoveRows();
138 return true;
139}
QgsListWidget(QVariant::Type subType, QWidget *parent=nullptr)
Constructor.
QVariantList list
void setList(const QVariantList &list)
Set the initial value of the widget.
Base widget allowing to edit a collection, using a table.
void init(QAbstractTableModel *model)
Initialize the table with the given model.