QGIS API Documentation 3.30.0-'s-Hertogenbosch (f186b8efe0)
qgsprocessingenummodelerwidget.cpp
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1/***************************************************************************
2 qgsprocessingenummodelerwidget.cpp
3 ------------------------------------
4 Date : March 2020
5 Copyright : (C) 2020 Alexander Bruy
6 Email : alexander dot bruy 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
17#include "qgsgui.h"
18#include <QMessageBox>
19#include <QToolButton>
20
22
23QgsProcessingEnumModelerWidget::QgsProcessingEnumModelerWidget( QWidget *parent )
24 : QWidget( parent )
25{
26 setupUi( this );
27
28 mModel = new QStandardItemModel( this );
29 mItemList->setModel( mModel );
30 connect( mModel, &QStandardItemModel::itemChanged, this, &QgsProcessingEnumModelerWidget::onItemChanged );
31
32 connect( mButtonAdd, &QToolButton::clicked, this, &QgsProcessingEnumModelerWidget::addItem );
33 connect( mButtonRemove, &QToolButton::clicked, this, [ = ] { removeItems( false ); } );
34 connect( mButtonClear, &QToolButton::clicked, this, [ = ] { removeItems( true ); } );
35}
36
37void QgsProcessingEnumModelerWidget::addItem()
38{
39 QStandardItem *item = new QStandardItem( tr( "new item" ) );
40 item->setCheckable( true );
41 item->setDropEnabled( false );
42 item->setData( Qt::Unchecked );
43 mModel->appendRow( item );
44}
45
46void QgsProcessingEnumModelerWidget::removeItems( const bool removeAll )
47{
48 if ( removeAll )
49 {
50 if ( QMessageBox::question( nullptr, tr( "Delete items" ),
51 tr( "Are you sure you want to delete all items" ),
52 QMessageBox::Yes | QMessageBox::No, QMessageBox::No ) == QMessageBox::Yes )
53 mModel->clear();
54 }
55 else
56 {
57 QModelIndexList selected = mItemList->selectionModel()->selectedIndexes();
58 QSet< int > rows;
59 rows.reserve( selected.count() );
60 for ( const QModelIndex &i : selected )
61 rows << i.row();
62
63 QList< int > rowsToDelete = qgis::setToList( rows );
64 std::sort( rowsToDelete.begin(), rowsToDelete.end(), std::greater<int>() );
65
66 mItemList->setUpdatesEnabled( false );
67 for ( int i : std::as_const( rowsToDelete ) )
68 mModel->removeRows( i, 1 );
69 mItemList->setUpdatesEnabled( true );
70 }
71}
72
73void QgsProcessingEnumModelerWidget::onItemChanged( QStandardItem *item )
74{
75 int checkedItemIndex = -1;
76 for ( int i = 0; i < mModel->rowCount(); i++ )
77 {
78 QStandardItem *itm = mModel->item( i );
79 if ( itm->checkState() == Qt::Checked && itm->data() == Qt::Checked )
80 {
81 checkedItemIndex = i;
82 break;
83 }
84 }
85
86 mModel->blockSignals( true );
87 if ( checkedItemIndex < 0 )
88 {
89 item->setData( item->checkState() );
90 }
91 else
92 {
93 if ( mAllowMultiple->isChecked() )
94 {
95 item->setData( item->checkState() );
96 }
97 else
98 {
99 mModel->item( checkedItemIndex )->setCheckState( Qt::Unchecked );
100 mModel->item( checkedItemIndex )->setData( Qt::Unchecked );
101 item->setData( item->checkState() );
102 }
103 }
104 mModel->blockSignals( false );
105}
106
107QStringList QgsProcessingEnumModelerWidget::options() const
108{
109 QStringList options;
110 options.reserve( mModel->rowCount() );
111 for ( int i = 0; i < mModel->rowCount(); ++i )
112 {
113 options << mModel->item( i )->text();
114 }
115 return options;
116}
117
118void QgsProcessingEnumModelerWidget::setOptions( const QStringList &options )
119{
120 for ( const QString &option : options )
121 {
122 QStandardItem *item = new QStandardItem( option );
123 item->setCheckable( true );
124 item->setDropEnabled( false );
125 item->setData( Qt::Unchecked );
126 mModel->appendRow( item );
127 }
128}
129
130QVariant QgsProcessingEnumModelerWidget::defaultOptions() const
131{
132 QVariantList defaults;
133 for ( int i = 0; i < mModel->rowCount(); ++i )
134 {
135 if ( mModel->item( i )->checkState() == Qt::Checked )
136 defaults << i;
137 }
138 QVariant val( defaults );
139 return val;
140}
141
142void QgsProcessingEnumModelerWidget::setDefaultOptions( const QVariant &defaultValue )
143{
144 if ( !defaultValue.isValid() )
145 return;
146
147 QVariant val = defaultValue;
148 QList< int > values;
149 if ( val.type() == QVariant::List || val.type() == QVariant::StringList )
150 {
151 for ( const QVariant &var : val.toList() )
152 values << var.toInt();
153 }
154 else if ( val.type() == QVariant::String )
155 {
156 QStringList split = val.toString().split( ',' );
157 for ( const QString &var : split )
158 values << var.toInt();
159 }
160 else if ( val.type() == QVariant::Int )
161 {
162 values << val.toInt();
163 }
164
165 QStandardItem *item;
166 for ( const int &i : values )
167 {
168 item = mModel->item( i );
169 if ( item )
170 {
171 item->setCheckState( Qt::Checked );
172 item->setData( Qt::Checked );
173 }
174 }
175}
176
177bool QgsProcessingEnumModelerWidget::allowMultiple() const
178{
179 return mAllowMultiple->isChecked();
180}
181
182void QgsProcessingEnumModelerWidget::setAllowMultiple( bool allowMultiple )
183{
184 mAllowMultiple->setChecked( allowMultiple );
185}
186