FileManager: Teach DirectoryView subviews to create editing delegates

This enables inline editing of filenames for table views, where this is
already supported. More work in LibGUI will be required to support the
feature in icon and columns views.

Applications/FileManager/DirectoryView.cpp

@@ -34,6 +34,7 @@
 #include <LibGUI/InputBox.h>
 #include <LibGUI/Label.h>
 #include <LibGUI/MessageBox.h>
+#include <LibGUI/ModelEditingDelegate.h>
 #include <LibGUI/SortingProxyModel.h>
 #include <serenity.h>
 #include <spawn.h>
@@ -202,6 +203,11 @@ void DirectoryView::setup_model()
 void DirectoryView::setup_icon_view()
 {
     m_icon_view = add<GUI::IconView>();
+    m_icon_view->set_editable(true);
+    m_icon_view->set_edit_triggers(GUI::AbstractView::EditTrigger::EditKeyPressed);
+    m_icon_view->aid_create_editing_delegate = [](auto&) {
+        return make<GUI::StringModelEditingDelegate>();
+    };
 
     if (is_desktop()) {
         m_icon_view->set_frame_shape(Gfx::FrameShape::NoFrame);
@@ -229,6 +235,12 @@ void DirectoryView::setup_icon_view()
 void DirectoryView::setup_columns_view()
 {
     m_columns_view = add<GUI::ColumnsView>();
+    m_columns_view->set_editable(true);
+    m_columns_view->set_edit_triggers(GUI::AbstractView::EditTrigger::EditKeyPressed);
+    m_columns_view->aid_create_editing_delegate = [](auto&) {
+        return make<GUI::StringModelEditingDelegate>();
+    };
+
     m_columns_view->set_model(m_sorting_model);
     m_columns_view->set_model_column(GUI::FileSystemModel::Column::Name);
 
@@ -253,8 +265,13 @@ void DirectoryView::setup_columns_view()
 void DirectoryView::setup_table_view()
 {
     m_table_view = add<GUI::TableView>();
-    m_table_view->set_model(m_sorting_model);
+    m_table_view->set_editable(true);
+    m_table_view->set_edit_triggers(GUI::AbstractView::EditTrigger::EditKeyPressed);
+    m_table_view->aid_create_editing_delegate = [](auto&) {
+        return make<GUI::StringModelEditingDelegate>();
+    };
 
+    m_table_view->set_model(m_sorting_model);
     m_table_view->set_key_column_and_sort_order(GUI::FileSystemModel::Column::Name, GUI::SortOrder::Ascending);
 
     m_table_view->on_activation = [&](auto& index) {