[Backport release-3_40] Improve CRS searching by string

python/PyQt6/core/auto_additions/qgsstringutils.py

@@ -18,5 +18,6 @@
     QgsStringUtils.htmlToMarkdown = staticmethod(QgsStringUtils.htmlToMarkdown)
     QgsStringUtils.qRegExpEscape = staticmethod(QgsStringUtils.qRegExpEscape)
     QgsStringUtils.truncateMiddleOfString = staticmethod(QgsStringUtils.truncateMiddleOfString)
+    QgsStringUtils.containsByWord = staticmethod(QgsStringUtils.containsByWord)
 except (NameError, AttributeError):
     pass

python/PyQt6/core/auto_generated/qgsstringutils.sip.in

@@ -328,6 +328,19 @@ will be truncated by removing characters from the middle of the string
 and replacing them with a horizontal ellipsis character.
 
 .. versionadded:: 3.22
+%End
+
+    static bool containsByWord( const QString &candidate, const QString &words, Qt::CaseSensitivity sensitivity = Qt::CaseInsensitive );
+%Docstring
+Given a ``candidate`` string, returns ``True`` if the ``candidate`` contains
+all the individual words from another string, regardless of their order.
+
+.. note::
+
+   The search does NOT need to match whole words in the ``candidate`` string,
+   so eg a candidate string of "Worldmap_Winkel_II" will return ``True`` for ``words`` "winkle world"
+
+.. versionadded:: 3.42
 %End
 
 };

python/PyQt6/gui/auto_additions/qgscoordinatereferencesystemmodel.py

@@ -33,6 +33,12 @@
 QgsCoordinateReferenceSystemModel.Roles.RoleProj = QgsCoordinateReferenceSystemModel.CustomRole.Proj
 QgsCoordinateReferenceSystemModel.RoleProj.is_monkey_patched = True
 QgsCoordinateReferenceSystemModel.RoleProj.__doc__ = "The coordinate reference system's PROJ representation. This is only used for non-standard CRS (i.e. those not present in the database)."
+QgsCoordinateReferenceSystemModel.Group = QgsCoordinateReferenceSystemModel.CustomRole.Group
+QgsCoordinateReferenceSystemModel.Group.is_monkey_patched = True
+QgsCoordinateReferenceSystemModel.Group.__doc__ = "Group name. \n.. versionadded:: 3.42"
+QgsCoordinateReferenceSystemModel.Projection = QgsCoordinateReferenceSystemModel.CustomRole.Projection
+QgsCoordinateReferenceSystemModel.Projection.is_monkey_patched = True
+QgsCoordinateReferenceSystemModel.Projection.__doc__ = "Projection name. \n.. versionadded:: 3.42"
 QgsCoordinateReferenceSystemModel.CustomRole.__doc__ = """Custom model roles.
 
 .. note::
@@ -73,6 +79,14 @@
 
   Available as ``QgsCoordinateReferenceSystemModel.RoleProj`` in older QGIS releases.
 
+* ``Group``: Group name.
+
+  .. versionadded:: 3.42
+
+* ``Projection``: Projection name.
+
+  .. versionadded:: 3.42
+
 
 """
 # --

python/PyQt6/gui/auto_generated/proj/qgscoordinatereferencesystemmodel.sip.in

@@ -34,6 +34,8 @@ A tree model for display of known coordinate reference systems.
       GroupId,
       Wkt,
       Proj,
+      Group,
+      Projection,
     };
 
     QgsCoordinateReferenceSystemModel( QObject *parent /TransferThis/ = 0 );

python/core/auto_additions/qgsstringutils.py

@@ -18,5 +18,6 @@
     QgsStringUtils.htmlToMarkdown = staticmethod(QgsStringUtils.htmlToMarkdown)
     QgsStringUtils.qRegExpEscape = staticmethod(QgsStringUtils.qRegExpEscape)
     QgsStringUtils.truncateMiddleOfString = staticmethod(QgsStringUtils.truncateMiddleOfString)
+    QgsStringUtils.containsByWord = staticmethod(QgsStringUtils.containsByWord)
 except (NameError, AttributeError):
     pass

python/core/auto_generated/qgsstringutils.sip.in

@@ -328,6 +328,19 @@ will be truncated by removing characters from the middle of the string
 and replacing them with a horizontal ellipsis character.
 
 .. versionadded:: 3.22
+%End
+
+    static bool containsByWord( const QString &candidate, const QString &words, Qt::CaseSensitivity sensitivity = Qt::CaseInsensitive );
+%Docstring
+Given a ``candidate`` string, returns ``True`` if the ``candidate`` contains
+all the individual words from another string, regardless of their order.
+
+.. note::
+
+   The search does NOT need to match whole words in the ``candidate`` string,
+   so eg a candidate string of "Worldmap_Winkel_II" will return ``True`` for ``words`` "winkle world"
+
+.. versionadded:: 3.42
 %End
 
 };

python/gui/auto_additions/qgscoordinatereferencesystemmodel.py

@@ -33,6 +33,12 @@
 QgsCoordinateReferenceSystemModel.Roles.RoleProj = QgsCoordinateReferenceSystemModel.CustomRole.Proj
 QgsCoordinateReferenceSystemModel.RoleProj.is_monkey_patched = True
 QgsCoordinateReferenceSystemModel.RoleProj.__doc__ = "The coordinate reference system's PROJ representation. This is only used for non-standard CRS (i.e. those not present in the database)."
+QgsCoordinateReferenceSystemModel.Group = QgsCoordinateReferenceSystemModel.CustomRole.Group
+QgsCoordinateReferenceSystemModel.Group.is_monkey_patched = True
+QgsCoordinateReferenceSystemModel.Group.__doc__ = "Group name. \n.. versionadded:: 3.42"
+QgsCoordinateReferenceSystemModel.Projection = QgsCoordinateReferenceSystemModel.CustomRole.Projection
+QgsCoordinateReferenceSystemModel.Projection.is_monkey_patched = True
+QgsCoordinateReferenceSystemModel.Projection.__doc__ = "Projection name. \n.. versionadded:: 3.42"
 QgsCoordinateReferenceSystemModel.CustomRole.__doc__ = """Custom model roles.
 
 .. note::
@@ -73,6 +79,14 @@
 
   Available as ``QgsCoordinateReferenceSystemModel.RoleProj`` in older QGIS releases.
 
+* ``Group``: Group name.
+
+  .. versionadded:: 3.42
+
+* ``Projection``: Projection name.
+
+  .. versionadded:: 3.42
+
 
 """
 # --

python/gui/auto_generated/proj/qgscoordinatereferencesystemmodel.sip.in

@@ -34,6 +34,8 @@ A tree model for display of known coordinate reference systems.
       GroupId,
       Wkt,
       Proj,
+      Group,
+      Projection,
     };
 
     QgsCoordinateReferenceSystemModel( QObject *parent /TransferThis/ = 0 );

src/core/qgsstringutils.cpp

@@ -745,6 +745,23 @@ QString QgsStringUtils::truncateMiddleOfString( const QString &string, int maxLe
 #endif
 }
 
+bool QgsStringUtils::containsByWord( const QString &candidate, const QString &words, Qt::CaseSensitivity sensitivity )
+{
+  if ( candidate.trimmed().isEmpty() )
+    return false;
+
+  const thread_local QRegularExpression rxWhitespace( QStringLiteral( "\\s+" ) );
+  const QStringList parts = words.split( rxWhitespace, Qt::SkipEmptyParts );
+  if ( parts.empty() )
+    return false;
+  for ( const QString &word : parts )
+  {
+    if ( !candidate.contains( word, sensitivity ) )
+      return false;
+  }
+  return true;
+}
+
 QgsStringReplacement::QgsStringReplacement( const QString &match, const QString &replacement, bool caseSensitive, bool wholeWordOnly )
   : mMatch( match )
   , mReplacement( replacement )

src/core/qgsstringutils.h

@@ -317,6 +317,17 @@ class CORE_EXPORT QgsStringUtils
      */
     static QString truncateMiddleOfString( const QString &string, int maxLength );
 
+    /**
+     * Given a \a candidate string, returns TRUE if the \a candidate contains
+     * all the individual words from another string, regardless of their order.
+     *
+     * \note The search does NOT need to match whole words in the \a candidate string,
+     * so eg a candidate string of "Worldmap_Winkel_II" will return TRUE for \a words "winkle world"
+     *
+     * \since QGIS 3.42
+     */
+    static bool containsByWord( const QString &candidate, const QString &words, Qt::CaseSensitivity sensitivity = Qt::CaseInsensitive );
+
 };
 
 #endif //QGSSTRINGUTILS_H

src/gui/proj/qgscoordinatereferencesystemmodel.cpp

@@ -18,6 +18,7 @@
 #include "moc_qgscoordinatereferencesystemmodel.cpp"
 #include "qgscoordinatereferencesystemutils.h"
 #include "qgsapplication.h"
+#include "qgsstringutils.h"
 
 #include <QFont>
 
@@ -157,6 +158,12 @@ QVariant QgsCoordinateReferenceSystemModel::data( const QModelIndex &index, int
         case static_cast<int>( CustomRole::Proj ):
           return crsNode->proj();
 
+        case static_cast<int>( CustomRole::Group ):
+          return crsNode->group();
+
+        case static_cast<int>( CustomRole::Projection ):
+          return crsNode->projection();
+
         default:
           break;
       }
@@ -423,6 +430,7 @@ QgsCoordinateReferenceSystemModelCrsNode *QgsCoordinateReferenceSystemModel::add
         break;
     }
   }
+  crsNode->setGroup( groupName );
 
   if ( QgsCoordinateReferenceSystemModelGroupNode *group = parentNode->getChildGroupNode( groupId ) )
   {
@@ -440,6 +448,8 @@ QgsCoordinateReferenceSystemModelCrsNode *QgsCoordinateReferenceSystemModel::add
     QString projectionName = QgsCoordinateReferenceSystemUtils::translateProjection( record.projectionAcronym );
     if ( projectionName.isEmpty() )
       projectionName = tr( "Other" );
+    else
+      crsNode->setProjection( projectionName );
 
     if ( QgsCoordinateReferenceSystemModelGroupNode *group = parentNode->getChildGroupNode( record.projectionAcronym ) )
     {
@@ -706,7 +716,15 @@ bool QgsCoordinateReferenceSystemProxyModel::filterAcceptsRow( int sourceRow, co
   if ( !mFilterString.trimmed().isEmpty() )
   {
     const QString name = sourceModel()->data( sourceIndex, static_cast<int>( QgsCoordinateReferenceSystemModel::CustomRole::Name ) ).toString();
-    if ( !( name.contains( mFilterString, Qt::CaseInsensitive )
+    QString candidate = name;
+    const QString groupName = sourceModel()->data( sourceIndex, static_cast<int>( QgsCoordinateReferenceSystemModel::CustomRole::Group ) ).toString();
+    if ( !groupName.isEmpty() )
+      candidate += ' ' + groupName;
+    const QString projectionName = sourceModel()->data( sourceIndex, static_cast<int>( QgsCoordinateReferenceSystemModel::CustomRole::Projection ) ).toString();
+    if ( !projectionName.isEmpty() )
+      candidate += ' ' + projectionName;
+
+    if ( !( QgsStringUtils::containsByWord( candidate, mFilterString )
             || authid.contains( mFilterString, Qt::CaseInsensitive ) ) )
       return false;
   }

src/gui/proj/qgscoordinatereferencesystemmodel.h

@@ -194,10 +194,44 @@ class GUI_EXPORT QgsCoordinateReferenceSystemModelCrsNode : public QgsCoordinate
      */
     QString proj() const { return mProj; }
 
+    /**
+     * Sets the CRS's group name.
+     *
+     * \see group()
+     * \since QGIS 3.42
+     */
+    void setGroup( const QString &group ) { mGroup = group; }
+
+    /**
+     * Returns the CRS's group name.
+     *
+     * \see setGroup()
+     * \since QGIS 3.42
+     */
+    QString group() const { return mGroup; }
+
+    /**
+     * Sets the CRS's projection name.
+     *
+     * \see projection()
+     * \since QGIS 3.42
+     */
+    void setProjection( const QString &projection ) { mProjection = projection; }
+
+    /**
+     * Returns the CRS's projection name.
+     *
+     * \see setProjection()
+     * \since QGIS 3.42
+     */
+    QString projection() const { return mProjection; }
+
   private:
     const QgsCrsDbRecord mRecord;
     QString mWkt;
     QString mProj;
+    QString mGroup;
+    QString mProjection;
 };
 
 #endif
@@ -232,6 +266,8 @@ class GUI_EXPORT QgsCoordinateReferenceSystemModel : public QAbstractItemModel
       GroupId SIP_MONKEYPATCH_COMPAT_NAME( RoleGroupId ) = Qt::UserRole + 5,       //!< The node ID (for group nodes)
       Wkt SIP_MONKEYPATCH_COMPAT_NAME( RoleWkt ) = Qt::UserRole + 6,               //!< The coordinate reference system's WKT representation. This is only used for non-standard CRS (i.e. those not present in the database).
       Proj SIP_MONKEYPATCH_COMPAT_NAME( RoleProj ) = Qt::UserRole + 7,             //!< The coordinate reference system's PROJ representation. This is only used for non-standard CRS (i.e. those not present in the database).
+      Group = Qt::UserRole + 8,                                                    //!< Group name. \since QGIS 3.42
+      Projection = Qt::UserRole + 9,                                               //!< Projection name. \since QGIS 3.42
     };
     Q_ENUM( CustomRole )
     // *INDENT-ON*

src/gui/proj/qgsprojectionselectiontreewidget.cpp

@@ -88,6 +88,8 @@ QgsProjectionSelectionTreeWidget::QgsProjectionSelectionTreeWidget( QWidget *par
   connect( leSearch, &QgsFilterLineEdit::textChanged, this, [=]( const QString &filter ) {
     mCrsModel->setFilterString( filter );
     mRecentCrsModel->setFilterString( filter );
+    if ( filter.length() >= 3 )
+      lstCoordinateSystems->expandAll();
   } );
 
   mAreaCanvas->setVisible( mShowMap );

tests/src/python/test_qgscoordinatereferencesystemmodel.py

@@ -299,6 +299,16 @@ def test_model(self):
                 epsg_3577_index, QgsCoordinateReferenceSystemModel.Roles.RoleProj
             )
         )
+        self.assertEqual(
+            model.data(epsg_3577_index, QgsCoordinateReferenceSystemModel.Roles.Group),
+            "Projected",
+        )
+        self.assertEqual(
+            model.data(
+                epsg_3577_index, QgsCoordinateReferenceSystemModel.Roles.Projection
+            ),
+            "Albers Equal Area",
+        )
 
         # check that same result is returned by authIdToIndex
         self.assertEqual(model.authIdToIndex("EPSG:3577"), epsg_3577_index)
@@ -765,6 +775,35 @@ def test_proxy_model(self):
         ][0]
         self.assertTrue(epsg_4347_index.isValid())
 
+        model.setFilterString("equal gda2020 Area")
+        projected_index = [
+            model.index(row, 0, QModelIndex())
+            for row in range(model.rowCount(QModelIndex()))
+            if model.data(
+                model.index(row, 0, QModelIndex()),
+                QgsCoordinateReferenceSystemModel.Roles.RoleGroupId,
+            )
+            == "Projected"
+        ][0]
+        aae_index = [
+            model.index(row, 0, projected_index)
+            for row in range(model.rowCount(projected_index))
+            if model.data(
+                model.index(row, 0, projected_index),
+                Qt.ItemDataRole.DisplayRole,
+            )
+            == "Albers Equal Area"
+        ][0]
+        epsg_9473_index = [
+            model.index(row, 0, aae_index)
+            for row in range(model.rowCount(aae_index))
+            if model.data(
+                model.index(row, 0, aae_index),
+                QgsCoordinateReferenceSystemModel.Roles.RoleAuthId,
+            )
+            == "EPSG:9473"
+        ][0]
+
         model.setFilterString("")
 
         # set filtered list of crs to show