QGIS API Documentation 3.34.0-Prizren (ffbdd678812)
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qgsproviderconnectioncombobox.cpp
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1/***************************************************************************
2 qgsproviderconnectioncombobox.cpp
3 --------------------------------
4 Date : March 2020
5 Copyright : (C) 2020 Nyall Dawson
6 Email : nyall dot dawson at gmail dot com
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
18
19QgsProviderConnectionComboBox::QgsProviderConnectionComboBox( const QString &provider, QWidget *parent )
20 : QComboBox( parent )
21{
22 setProvider( provider );
23}
24
26 : QComboBox( parent )
27{
28}
29
30void QgsProviderConnectionComboBox::setProvider( const QString &provider )
31{
32 if ( mSortModel )
33 {
34 disconnect( this, static_cast < void ( QComboBox::* )( int ) > ( &QComboBox::activated ), this, &QgsProviderConnectionComboBox::indexChanged );
35 disconnect( mSortModel, &QAbstractItemModel::rowsInserted, this, &QgsProviderConnectionComboBox::rowsChanged );
36 disconnect( mSortModel, &QAbstractItemModel::rowsRemoved, this, &QgsProviderConnectionComboBox::rowsChanged );
37 delete mSortModel;
38 delete mModel;
39 }
40
41 mModel = new QgsProviderConnectionModel( provider, this );
42
43 mSortModel = new QgsProviderConnectionComboBoxSortModel( this );
44 mSortModel->setSourceModel( mModel );
45 mSortModel->setSortRole( Qt::DisplayRole );
46 mSortModel->setSortLocaleAware( true );
47 mSortModel->setSortCaseSensitivity( Qt::CaseInsensitive );
48 mSortModel->setDynamicSortFilter( true );
49 mSortModel->sort( 0 );
50
51 setModel( mSortModel );
52
53 connect( this, static_cast < void ( QComboBox::* )( int ) > ( &QComboBox::activated ), this, &QgsProviderConnectionComboBox::indexChanged );
54 connect( mSortModel, &QAbstractItemModel::rowsInserted, this, &QgsProviderConnectionComboBox::rowsChanged );
55 connect( mSortModel, &QAbstractItemModel::rowsRemoved, this, &QgsProviderConnectionComboBox::rowsChanged );
56}
57
59{
60 mModel->setAllowEmptyConnection( allowEmpty );
61}
62
67
68void QgsProviderConnectionComboBox::setConnection( const QString &connection )
69{
70 if ( connection == currentConnection() )
71 return;
72
73 if ( connection.isEmpty() )
74 {
75 if ( mModel->allowEmptyConnection() )
76 setCurrentIndex( 0 );
77 else
78 setCurrentIndex( -1 );
79 emit connectionChanged( QString() );
80 return;
81 }
82
83 const QModelIndexList idx = mSortModel->match( mSortModel->index( 0, 0 ), QgsProviderConnectionModel::RoleConnectionName, connection, Qt::MatchFixedString | Qt::MatchCaseSensitive );
84 if ( !idx.empty() )
85 {
86 const QModelIndex proxyIdx = idx.at( 0 );
87 if ( proxyIdx.isValid() )
88 {
89 setCurrentIndex( proxyIdx.row() );
91 return;
92 }
93 }
94 setCurrentIndex( -1 );
95 emit connectionChanged( QString() );
96}
97
99{
100 const QModelIndex proxyIndex = mSortModel->index( currentIndex(), 0 );
101 if ( !proxyIndex.isValid() )
102 {
103 return QString();
104 }
105
106 return mSortModel->data( proxyIndex, QgsProviderConnectionModel::RoleConnectionName ).toString();
107}
108
110{
111 const QModelIndex proxyIndex = mSortModel->index( currentIndex(), 0 );
112 if ( !proxyIndex.isValid() )
113 {
114 return QString();
115 }
116
117 return mSortModel->data( proxyIndex, QgsProviderConnectionModel::RoleUri ).toString();
118}
119
120void QgsProviderConnectionComboBox::indexChanged( int i )
121{
122 Q_UNUSED( i )
124}
125
126void QgsProviderConnectionComboBox::rowsChanged()
127{
128 if ( count() == 1 || ( mModel->allowEmptyConnection() && count() == 2 && currentIndex() == 1 ) )
129 {
130 //currently selected connection item has changed
132 }
133 else if ( count() == 0 )
134 {
135 emit connectionChanged( QString() );
136 }
137}
138
139
141QgsProviderConnectionComboBoxSortModel::QgsProviderConnectionComboBoxSortModel( QObject *parent )
142 : QSortFilterProxyModel( parent )
143{
144
145}
146
147bool QgsProviderConnectionComboBoxSortModel::lessThan( const QModelIndex &left, const QModelIndex &right ) const
148{
149 // empty row is always first
150 if ( sourceModel()->data( left, QgsProviderConnectionModel::RoleEmpty ).toBool() )
151 return true;
152 else if ( sourceModel()->data( right, QgsProviderConnectionModel::RoleEmpty ).toBool() )
153 return false;
154
155 // default mode is alphabetical order
156 const QString leftStr = sourceModel()->data( left ).toString();
157 const QString rightStr = sourceModel()->data( right ).toString();
158 return QString::localeAwareCompare( leftStr, rightStr ) < 0;
159}
160
161
QgsProviderConnectionComboBox(const QString &provider, QWidget *parent=nullptr)
Constructor for QgsProviderConnectionComboBox, for the specified provider.
QString currentConnectionUri() const
Returns the uri of the current connection selected in the combo box.
void setProvider(const QString &provider)
Sets the provider to be used.
void setConnection(const QString &connection)
Sets the current connection selected in the combo box.
bool allowEmptyConnection() const
Returns true if the combobox allows the empty connection ("not set") choice.
void setAllowEmptyConnection(bool allowEmpty)
Sets whether an optional empty connection ("not set") option is present in the combobox.
QString currentConnection() const
Returns the name of the current connection selected in the combo box.
void connectionChanged(const QString &connection)
Emitted whenever the currently selected connection changes.
A model containing registered connection names for a specific data provider.
bool allowEmptyConnection() const
Returns true if the model allows the empty connection ("not set") choice.
void setAllowEmptyConnection(bool allowEmpty)
Sets whether an optional empty connection ("not set") option is present in the model.
@ RoleEmpty
Entry is an empty entry.