Adding "Create New Material" context menu option to folder in Material Editor

Improving MaterialBrowser filter to show empty folders

Gems/Atom/Tools/MaterialEditor/Code/Source/Window/CreateMaterialDialog/CreateMaterialDialog.cpp

@@ -26,8 +26,14 @@
 namespace MaterialEditor
 {
     CreateMaterialDialog::CreateMaterialDialog(QWidget* parent)
+        : CreateMaterialDialog(QString(AZ::IO::FileIOBase::GetInstance()->GetAlias("@devassets@")) + AZ_CORRECT_FILESYSTEM_SEPARATOR + "Materials", parent)
+    {
+    }
+
+    CreateMaterialDialog::CreateMaterialDialog(const QString& path, QWidget* parent)
         : QDialog(parent)
         , m_ui(new Ui::CreateMaterialDialog)
+        , m_path(path)
     {
         m_ui->setupUi(this);
 
@@ -77,8 +83,7 @@ namespace MaterialEditor
     {
         //Select a default location and unique name for the new material
         m_materialFileInfo = AtomToolsFramework::GetUniqueFileInfo(
-            QString(AZ::IO::FileIOBase::GetInstance()->GetAlias("@devassets@")) +
-            AZ_CORRECT_FILESYSTEM_SEPARATOR + "Materials" +
+            m_path +
             AZ_CORRECT_FILESYSTEM_SEPARATOR + "untitled." +
             AZ::RPI::MaterialSourceData::Extension).absoluteFilePath();
 

Gems/Atom/Tools/MaterialEditor/Code/Source/Window/CreateMaterialDialog/CreateMaterialDialog.h

@@ -27,6 +27,7 @@ namespace MaterialEditor
         Q_OBJECT
     public:
         CreateMaterialDialog(QWidget* parent = nullptr);
+        CreateMaterialDialog(const QString& path, QWidget* parent = nullptr);
         ~CreateMaterialDialog() = default;
 
         QFileInfo m_materialFileInfo;
@@ -34,6 +35,8 @@ namespace MaterialEditor
 
     private:
         QScopedPointer<Ui::CreateMaterialDialog> m_ui;
+        QString m_path;
+
         void InitMaterialTypeSelection();
         void InitMaterialFileSelection();
         void UpdateMaterialTypeSelection();