QGIS API Documentation 3.38.0-Grenoble (exported)
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qgsprocessingtoolboxtreeview.cpp
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1/***************************************************************************
2 qgsprocessingtoolboxtreeview.cpp
3 -------------------------------
4 begin : July 2018
5 copyright : (C) 2018 by 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
19#include <QKeyEvent>
20
22
23QgsProcessingToolboxTreeView::QgsProcessingToolboxTreeView( QWidget *parent,
24 QgsProcessingRegistry *registry,
25 QgsProcessingRecentAlgorithmLog *recentLog )
26 : QTreeView( parent )
27{
28 mModel = new QgsProcessingToolboxProxyModel( this, registry, recentLog );
29 mToolboxModel = mModel->toolboxModel();
30 setModel( mModel );
31}
32
33void QgsProcessingToolboxTreeView::setRegistry( QgsProcessingRegistry *registry, QgsProcessingRecentAlgorithmLog *recentLog )
34{
35 QgsProcessingToolboxProxyModel *newModel = new QgsProcessingToolboxProxyModel( this, registry, recentLog );
36 mToolboxModel = newModel->toolboxModel();
37 setModel( newModel );
38 mModel->deleteLater();
39 mModel = newModel;
40}
41
42void QgsProcessingToolboxTreeView::setToolboxProxyModel( QgsProcessingToolboxProxyModel *model )
43{
44 mToolboxModel = mModel->toolboxModel();
45 setModel( model );
46 mModel->deleteLater();
47 mModel = model;
48}
49
50void QgsProcessingToolboxTreeView::setFilterString( const QString &filter )
51{
52 const QString text = filter.trimmed().toLower();
53 mModel->setFilterString( text );
54 if ( !text.isEmpty() )
55 {
56 expandAll();
57 if ( !selectedAlgorithm() )
58 {
59 // if previously selected item was hidden, auto select the first visible algorithm
60 const QModelIndex firstVisibleIndex = findFirstVisibleAlgorithm( QModelIndex() );
61 if ( firstVisibleIndex.isValid() )
62 selectionModel()->setCurrentIndex( firstVisibleIndex, QItemSelectionModel::ClearAndSelect );
63 }
64 }
65 else
66 {
67 collapseAll();
68 }
69}
70
71const QgsProcessingAlgorithm *QgsProcessingToolboxTreeView::algorithmForIndex( const QModelIndex &index )
72{
73 const QModelIndex sourceIndex = mModel->mapToSource( index );
74 if ( mToolboxModel->isAlgorithm( sourceIndex ) )
75 return mToolboxModel->algorithmForIndex( sourceIndex );
76 else
77 return nullptr;
78}
79
80const QgsProcessingAlgorithm *QgsProcessingToolboxTreeView::selectedAlgorithm()
81{
82 if ( selectionModel()->hasSelection() )
83 {
84 const QModelIndex index = selectionModel()->selectedIndexes().at( 0 );
85 return algorithmForIndex( index );
86 }
87 else
88 {
89 return nullptr;
90 }
91}
92
93void QgsProcessingToolboxTreeView::setFilters( QgsProcessingToolboxProxyModel::Filters filters )
94{
95 mModel->setFilters( filters );
96}
97
98QgsProcessingToolboxProxyModel::Filters QgsProcessingToolboxTreeView::filters() const
99{
100 return mModel->filters();
101}
102
103void QgsProcessingToolboxTreeView::setInPlaceLayer( QgsVectorLayer *layer )
104{
105 mModel->setInPlaceLayer( layer );
106}
107
108QModelIndex QgsProcessingToolboxTreeView::findFirstVisibleAlgorithm( const QModelIndex &parent )
109{
110 for ( int r = 0; r < mModel->rowCount( parent ); ++r )
111 {
112 QModelIndex proxyIndex = mModel->index( r, 0, parent );
113 const QModelIndex sourceIndex = mModel->mapToSource( proxyIndex );
114 if ( mToolboxModel->isAlgorithm( sourceIndex ) )
115 return proxyIndex;
116
117 QModelIndex index = findFirstVisibleAlgorithm( proxyIndex );
118 if ( index.isValid() )
119 return index;
120 }
121 return QModelIndex();
122}
123
124void QgsProcessingToolboxTreeView::keyPressEvent( QKeyEvent *event )
125{
126 if ( event->key() == Qt::Key_Return || event->key() == Qt::Key_Enter )
127 emit doubleClicked( currentIndex() );
128 else
129 QTreeView::keyPressEvent( event );
130}
131
Abstract base class for processing algorithms.
Registry for various processing components, including providers, algorithms and various parameters an...
A sort/filter proxy model for providers and algorithms shown within the Processing toolbox,...
void setFilterString(const QString &filter)
Sets a filter string, such that only algorithms matching the specified string will be shown.
QgsProcessingToolboxModel * toolboxModel()
Returns the underlying source Processing toolbox model.
Represents a vector layer which manages a vector based data sets.