Support CTRL+Click for opening links in attribute table

python/core/auto_generated/qgsstringutils.sip.in

@@ -279,6 +279,17 @@ links.
 :return: string with inserted links
 
 .. versionadded:: 3.0
+%End
+
+    static bool isUrl( const QString &string );
+%Docstring
+Returns whether the string is a URL (http,https,ftp,file)
+
+:param string: the string to check
+
+:return: whether the string is an URL
+
+.. versionadded:: 3.22
 %End
 
     static QString wordWrap( const QString &string, int length, bool useMaxLineLength = true, const QString &customDelimiter = QString() );

src/core/qgsstringutils.cpp

@@ -563,6 +563,12 @@ QString QgsStringUtils::insertLinks( const QString &string, bool *foundLinks )
   return converted;
 }
 
+bool QgsStringUtils::isUrl( const QString &string )
+{
+  const thread_local QRegularExpression rxUrl( "^(http|https|ftp|file)://\\S+$" );
+  return rxUrl.match( string ).hasMatch();
+}
+
 QString QgsStringUtils::htmlToMarkdown( const QString &html )
 {
   // Any changes in this function must be copied to qgscrashreport.cpp too

src/core/qgsstringutils.h

@@ -277,6 +277,14 @@ class CORE_EXPORT QgsStringUtils
      */
     static QString insertLinks( const QString &string, bool *foundLinks = nullptr );
 
+    /**
+     * Returns whether the string is a URL (http,https,ftp,file)
+     * \param string the string to check
+     * \returns whether the string is an URL
+     * \since QGIS 3.22
+     */
+    static bool isUrl( const QString &string );
+
     /**
      * Automatically wraps a \a string by inserting new line characters at appropriate locations in the string.
      *

src/gui/attributetable/qgsattributetablemodel.cpp

@@ -40,6 +40,7 @@
 #include "qgsfieldmodel.h"
 #include "qgstexteditwidgetfactory.h"
 #include "qgsexpressioncontextutils.h"
+#include "qgsstringutils.h"
 #include "qgsvectorlayerutils.h"
 #include "qgsvectorlayercache.h"
 
@@ -702,13 +703,24 @@ QVariant QgsAttributeTableModel::data( const QModelIndex &index, int role ) cons
   switch ( role )
   {
     case Qt::DisplayRole:
-    case Qt::ToolTipRole:
       return mFieldFormatters.at( index.column() )->representValue( mLayer,
              fieldId,
              mWidgetConfigs.at( index.column() ),
              mAttributeWidgetCaches.at( index.column() ),
              val );
-
+    case Qt::ToolTipRole:
+    {
+      QString tooltip = mFieldFormatters.at( index.column() )->representValue( mLayer,
+                        fieldId,
+                        mWidgetConfigs.at( index.column() ),
+                        mAttributeWidgetCaches.at( index.column() ),
+                        val );
+      if ( val.type() == QVariant::String && QgsStringUtils::isUrl( val.toString() ) )
+      {
+        tooltip = tr( "%1 (Ctrl+click to open)" ).arg( tooltip );
+      }
+      return tooltip;
+    }
     case Qt::EditRole:
       return val;
 
@@ -746,7 +758,7 @@ QVariant QgsAttributeTableModel::data( const QModelIndex &index, int role ) cons
 #if QT_VERSION < QT_VERSION_CHECK(5, 13, 0)
         if ( role == Qt::TextColorRole && style.validTextColor() )
 #else
-        if ( role == Qt::ForegroundRole && style.validTextColor() )
+        if ( role == Qt::ForegroundRole )
 #endif
           return style.textColor();
         if ( role == Qt::DecorationRole )
@@ -754,6 +766,19 @@ QVariant QgsAttributeTableModel::data( const QModelIndex &index, int role ) cons
         if ( role == Qt::FontRole )
           return style.font();
       }
+      else if ( val.type() == QVariant::String && QgsStringUtils::isUrl( val.toString() ) )
+      {
+        if ( role == Qt::ForegroundRole )
+        {
+          return QColor( Qt::blue );
+        }
+        else if ( role == Qt::FontRole )
+        {
+          QFont font;
+          font.setUnderline( true );
+          return font;
+        }
+      }
 
       return QVariant();
     }

src/gui/attributetable/qgsattributetableview.cpp

@@ -13,6 +13,7 @@
  *                                                                         *
  ***************************************************************************/
 
+#include <QDesktopServices>
 #include <QKeyEvent>
 #include <QHeaderView>
 #include <QMenu>
@@ -34,6 +35,7 @@
 #include "qgsfeatureselectionmodel.h"
 #include "qgsmaplayeractionregistry.h"
 #include "qgsfeatureiterator.h"
+#include "qgsstringutils.h"
 #include "qgsgui.h"
 
 QgsAttributeTableView::QgsAttributeTableView( QWidget *parent )
@@ -304,6 +306,19 @@ void QgsAttributeTableView::mouseReleaseEvent( QMouseEvent *event )
   setSelectionMode( QAbstractItemView::NoSelection );
   QTableView::mouseReleaseEvent( event );
   setSelectionMode( QAbstractItemView::ExtendedSelection );
+  if ( event->modifiers() == Qt::ControlModifier )
+  {
+    QModelIndex index = indexAt( event->pos() );
+    QVariant data = model()->data( index, Qt::DisplayRole );
+    if ( data.type() == QVariant::String )
+    {
+      QString textVal = data.toString();
+      if ( QgsStringUtils::isUrl( textVal ) )
+      {
+        QDesktopServices::openUrl( QUrl( textVal ) );
+      }
+    }
+  }
 }
 
 void QgsAttributeTableView::mouseMoveEvent( QMouseEvent *event )

tests/src/core/testqgsstringutils.cpp

@@ -42,6 +42,7 @@ class TestQgsStringUtils : public QObject
     void htmlToMarkdown();
     void wordWrap_data();
     void wordWrap();
+    void testIsUrl();
 
 };
 
@@ -258,6 +259,18 @@ void TestQgsStringUtils::wordWrap()
   QCOMPARE( QgsStringUtils::wordWrap( input, length, isMax, delimiter ), expected );
 }
 
+void TestQgsStringUtils::testIsUrl()
+{
+  QVERIFY( QgsStringUtils::isUrl( QStringLiteral( "http://example.com" ) ) );
+  QVERIFY( QgsStringUtils::isUrl( QStringLiteral( "https://example.com" ) ) );
+  QVERIFY( QgsStringUtils::isUrl( QStringLiteral( "ftp://example.com" ) ) );
+  QVERIFY( QgsStringUtils::isUrl( QStringLiteral( "file:///path/to/file" ) ) );
+  QVERIFY( QgsStringUtils::isUrl( QStringLiteral( "file://C:\\path\\to\\file" ) ) );
+  QVERIFY( !QgsStringUtils::isUrl( QStringLiteral( "" ) ) );
+  QVERIFY( !QgsStringUtils::isUrl( QStringLiteral( "some:random/string" ) ) );
+  QVERIFY( !QgsStringUtils::isUrl( QStringLiteral( "bla" ) ) );
+}
+
 
 QGSTEST_MAIN( TestQgsStringUtils )
 #include "testqgsstringutils.moc"