Make URLS in message log clickable

nyalldawson · nyalldawson · commit dc7a4ce53c51 · 2019-01-21T12:57:54.000+11:00
diff --git a/python/gui/auto_generated/qgsmessagelogviewer.sip.in b/python/gui/auto_generated/qgsmessagelogviewer.sip.in
@@ -39,6 +39,8 @@ Logs a ``message`` to the viewer.
 
     virtual void reject();
 
+    virtual bool eventFilter( QObject *obj, QEvent *ev );
+
 
 };
 
diff --git a/src/gui/qgsmessagelogviewer.cpp b/src/gui/qgsmessagelogviewer.cpp
@@ -30,6 +30,7 @@
 #include <QPlainTextEdit>
 #include <QScrollBar>
 #include <QDebug>
+#include <QDesktopServices>
 
 QgsMessageLogViewer::QgsMessageLogViewer( QWidget *parent, Qt::WindowFlags fl )
   : QDialog( parent, fl )
@@ -70,6 +71,7 @@ void QgsMessageLogViewer::logMessage( const QString &message, const QString &tag
   {
     w = new QPlainTextEdit( this );
     w->setReadOnly( true );
+    w->viewport()->installEventFilter( this );
     tabWidget->addTab( w, cleanedTag );
     tabWidget->setCurrentIndex( tabWidget->count() - 1 );
   }
@@ -116,3 +118,43 @@ void QgsMessageLogViewer::closeTab( int index )
   else
     tabWidget->removeTab( index );
 }
+
+bool QgsMessageLogViewer::eventFilter( QObject *object, QEvent *event )
+{
+  switch ( event->type() )
+  {
+    case QEvent::MouseButtonPress:
+    {
+      if ( QPlainTextEdit *te = qobject_cast<QPlainTextEdit *>( object->parent() ) )
+      {
+        QMouseEvent *me = static_cast< QMouseEvent *>( event );
+        mClickedAnchor = ( me->button() & Qt::LeftButton ) ? te->anchorAt( me->pos() ) :
+                         QString();
+        if ( !mClickedAnchor.isEmpty() )
+          return true;
+      }
+      break;
+    }
+
+    case QEvent::MouseButtonRelease:
+    {
+      if ( QPlainTextEdit *te = qobject_cast<QPlainTextEdit *>( object->parent() ) )
+      {
+        QMouseEvent *me = static_cast< QMouseEvent *>( event );
+        QString clickedAnchor = ( me->button() & Qt::LeftButton ) ? te->anchorAt( me->pos() ) :
+                                QString();
+        if ( !clickedAnchor.isEmpty() && clickedAnchor == mClickedAnchor )
+        {
+          QDesktopServices::openUrl( mClickedAnchor );
+          return true;
+        }
+      }
+      break;
+    }
+
+    default:
+      break;
+  }
+
+  return QDialog::eventFilter( object, event );
+}
diff --git a/src/gui/qgsmessagelogviewer.h b/src/gui/qgsmessagelogviewer.h
@@ -53,9 +53,14 @@ class GUI_EXPORT QgsMessageLogViewer: public QDialog, private Ui::QgsMessageLogV
   protected:
     void closeEvent( QCloseEvent *e ) override;
     void reject() override;
+    bool eventFilter( QObject *obj, QEvent *ev ) override;
 
   private slots:
     void closeTab( int index );
+
+  private:
+
+    QString mClickedAnchor;
 };
 
 #endif
