QGIS API Documentation  2.99.0-Master (ae4d26a)
qgsmaplayermodel.h
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1 /***************************************************************************
2  qgsmaplayermodel.h
3  --------------------------------------
4  Date : 01.04.2014
5  Copyright : (C) 2014 Denis Rouzaud
6  Email : [email protected]
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 #ifndef QGSMAPLAYERMODEL_H
17 #define QGSMAPLAYERMODEL_H
18 
19 #include <QAbstractItemModel>
20 #include <QSortFilterProxyModel>
21 #include <QStringList>
22 
23 #include "qgis_core.h"
24 #include "qgis.h"
25 
26 class QgsMapLayer;
27 
28 
36 class CORE_EXPORT QgsMapLayerModel : public QAbstractItemModel
37 {
38  Q_OBJECT
39 
40  Q_PROPERTY( bool allowEmptyLayer READ allowEmptyLayer WRITE setAllowEmptyLayer )
41  Q_PROPERTY( bool showCrs READ showCrs WRITE setShowCrs )
42  Q_PROPERTY( bool itemsCheckable READ itemsCheckable WRITE setItemsCheckable )
43  Q_PROPERTY( QStringList additionalItems READ additionalItems WRITE setAdditionalItems )
44 
45  public:
46 
49  {
50  LayerIdRole = Qt::UserRole + 1,
54  };
55 
59  explicit QgsMapLayerModel( QObject *parent SIP_TRANSFERTHIS = nullptr );
60 
64  explicit QgsMapLayerModel( const QList<QgsMapLayer *> &layers, QObject *parent = nullptr );
65 
69  void setItemsCheckable( bool checkable );
70 
74  void checkAll( Qt::CheckState checkState );
75 
81  void setAllowEmptyLayer( bool allowEmpty );
82 
88  bool allowEmptyLayer() const { return mAllowEmpty; }
89 
95  void setShowCrs( bool showCrs );
96 
102  bool showCrs() const { return mShowCrs; }
103 
107  QList<QgsMapLayer *> layersChecked( Qt::CheckState checkState = Qt::Checked );
109  bool itemsCheckable() const { return mItemCheckable; }
110 
114  QModelIndex indexFromLayer( QgsMapLayer *layer ) const;
115 
123  void setAdditionalItems( const QStringList &items );
124 
130  QStringList additionalItems() const { return mAdditionalItems; }
131 
132  // QAbstractItemModel interface
133  QModelIndex index( int row, int column, const QModelIndex &parent = QModelIndex() ) const override;
134  QModelIndex parent( const QModelIndex &child ) const override;
135  int rowCount( const QModelIndex &parent = QModelIndex() ) const override;
136  int columnCount( const QModelIndex &parent = QModelIndex() ) const override;
137  QVariant data( const QModelIndex &index, int role = Qt::DisplayRole ) const override;
138 
144  QHash<int, QByteArray> roleNames() const override SIP_SKIP;
145 
146  bool setData( const QModelIndex &index, const QVariant &value, int role = Qt::EditRole ) override;
147  Qt::ItemFlags flags( const QModelIndex &index ) const override;
148 
153  static QIcon iconForLayer( QgsMapLayer *layer );
154 
155  protected slots:
156  void removeLayers( const QStringList &layerIds );
157  void addLayers( const QList<QgsMapLayer *> &layers );
158 
159  protected:
160  QList<QgsMapLayer *> mLayers;
161  QMap<QString, Qt::CheckState> mLayersChecked;
162  bool mItemCheckable = false;
163 
164  private:
165 
166  bool mAllowEmpty = false;
167  bool mShowCrs = false;
168  QStringList mAdditionalItems;
169 };
170 
171 #endif // QGSMAPLAYERMODEL_H
Base class for all map layer types.
Definition: qgsmaplayer.h:56
ItemDataRole
Item data roles.
#define SIP_TRANSFERTHIS
Definition: qgis_sip.h:46
Stores pointer to the map layer itself.
bool allowEmptyLayer() const
Returns true if the model allows the empty layer ("not set") choice.
True if index corresponds to an additional (non map layer) item.
QStringList additionalItems() const
Return the list of additional (non map layer) items included at the end of the model.
#define SIP_SKIP
Definition: qgis_sip.h:119
The QgsMapLayerModel class is a model to display layers in widgets.
QMap< QString, Qt::CheckState > mLayersChecked
QList< QgsMapLayer * > mLayers
bool showCrs() const
Returns true if the model includes layer&#39;s CRS in the display role.
bool itemsCheckable() const
returns if the items can be checked or not
True if index corresponds to the empty (not set) value.