[browser] Don't try to open links within the browser properties widget

Instead open them externally. Fixes clicking on the path link
within metadata tries to open layer files instead the text
widget instead of showing them in the desktop file browser.

src/gui/qgsbrowserdockwidget_p.cpp

@@ -38,6 +38,9 @@
 #include "qgsproject.h"
 #include "qgssettings.h"
 #include "qgsmeshlayer.h"
+#include "qgsgui.h"
+#include "qgsnative.h"
+#include <QDesktopServices>
 
 #include <QDragEnterEvent>
 
@@ -115,6 +118,10 @@ QgsBrowserLayerProperties::QgsBrowserLayerProperties( QWidget *parent )
 
   mUriLabel = new QgsBrowserPropertiesWrapLabel( QString(), this );
   mHeaderGridLayout->addItem( new QWidgetItem( mUriLabel ), 1, 1 );
+
+  // we don't want links to open in the little widget, open them externally instead
+  mMetadataTextBrowser->setOpenLinks( false );
+  connect( mMetadataTextBrowser, &QTextBrowser::anchorClicked, this, &QgsBrowserLayerProperties::urlClicked );
 }
 
 class ProjectionSettingRestorer
@@ -249,6 +256,15 @@ void QgsBrowserLayerProperties::setCondensedMode( bool condensedMode )
   }
 }
 
+void QgsBrowserLayerProperties::urlClicked( const QUrl &url )
+{
+  QFileInfo file( url.toLocalFile() );
+  if ( file.exists() && !file.isDir() )
+    QgsGui::instance()->nativePlatformInterface()->openFileExplorerAndSelectFile( url.toLocalFile() );
+  else
+    QDesktopServices::openUrl( url );
+}
+
 QgsBrowserDirectoryProperties::QgsBrowserDirectoryProperties( QWidget *parent )
   : QgsBrowserPropertiesWidget( parent )
 

src/gui/qgsbrowserdockwidget_p.h

@@ -123,6 +123,10 @@ class QgsBrowserLayerProperties : public QgsBrowserPropertiesWidget, private Ui:
      */
     void setCondensedMode( bool condensedMode ) override;
 
+  private slots:
+
+    void urlClicked( const QUrl &url );
+
   private:
     QgsBrowserPropertiesWrapLabel *mUriLabel = nullptr;
 };