-wip on addon editor

-fixes instantiable subclasses not working, as reported in #3871

modules/gdscript/gd_compiler.cpp

@@ -1712,6 +1712,8 @@ Error GDCompiler::_parse_class(GDScript *p_script,GDScript *p_owner,const GDPars
 		}
 	}
 #endif
+
+	p_script->valid=true;
 	return OK;
 }
 

tools/editor/addon_editor_plugin.cpp

@@ -0,0 +1,67 @@
+#include "addon_editor_plugin.h"
+#include "editor_node.h"
+EditorAddonLibrary::EditorAddonLibrary() {
+
+	tabs = memnew( TabContainer );
+	tabs->set_v_size_flags(SIZE_EXPAND_FILL);
+	add_child(tabs);
+
+	installed = memnew( EditorPluginSettings );
+	installed->set_name("Installed");
+	tabs->add_child(installed);
+
+	library = memnew( VBoxContainer );
+	library->set_name("Online");
+	tabs->add_child(library);
+
+	HBoxContainer *search_hb = memnew( HBoxContainer );
+
+	library->add_child(search_hb);
+
+	search_hb->add_child( memnew( Label("Search: ")));
+	filter =memnew( LineEdit );
+	search_hb->add_child(filter);
+	filter->set_h_size_flags(SIZE_EXPAND_FILL);
+
+	categories = memnew( OptionButton );
+	categories->add_item("All Categories");
+	search_hb->add_child(categories);
+
+	search = memnew( Button("Search"));
+	search_hb->add_child(search);
+
+
+
+
+}
+
+
+///////
+
+
+void AddonEditorPlugin::make_visible(bool p_visible) {
+
+	if (p_visible) {
+
+		addon_library->show();
+	} else {
+
+		addon_library->hide();
+	}
+
+}
+
+AddonEditorPlugin::AddonEditorPlugin(EditorNode *p_node) {
+
+	editor=p_node;
+	addon_library = memnew( EditorAddonLibrary );
+	addon_library->set_v_size_flags(Control::SIZE_EXPAND_FILL);
+	editor->get_viewport()->add_child(addon_library);
+	addon_library->set_area_as_parent_rect();
+	addon_library->hide();
+
+}
+
+AddonEditorPlugin::~AddonEditorPlugin() {
+
+}

tools/editor/addon_editor_plugin.h

@@ -0,0 +1,50 @@
+#ifndef ADDON_EDITOR_PLUGIN_H
+#define ADDON_EDITOR_PLUGIN_H
+
+
+#include "editor_plugin.h"
+#include "scene/gui/box_container.h"
+#include "scene/gui/line_edit.h"
+#include "scene/gui/option_button.h"
+#include "scene/gui/tab_container.h"
+#include "editor_plugin_settings.h"
+
+class EditorAddonLibrary : public VBoxContainer {
+	OBJ_TYPE(EditorAddonLibrary,VBoxContainer);
+
+	TabContainer *tabs;
+	EditorPluginSettings *installed;
+	VBoxContainer *library;
+	LineEdit *filter;
+	OptionButton *categories;
+	Button *search;
+
+
+public:
+	EditorAddonLibrary();
+};
+
+class AddonEditorPlugin : public EditorPlugin {
+
+	OBJ_TYPE( AddonEditorPlugin, EditorPlugin );
+
+	EditorAddonLibrary *addon_library;
+	EditorNode *editor;
+
+public:
+
+	virtual String get_name() const { return "Addons"; }
+	bool has_main_screen() const { return true; }
+	virtual void edit(Object *p_object) {}
+	virtual bool handles(Object *p_object) const { return false; }
+	virtual void make_visible(bool p_visible);
+	//virtual bool get_remove_list(List<Node*> *p_list) { return canvas_item_editor->get_remove_list(p_list); }
+	//virtual Dictionary get_state() const;
+	//virtual void set_state(const Dictionary& p_state);
+
+	AddonEditorPlugin(EditorNode *p_node);
+	~AddonEditorPlugin();
+
+};
+
+#endif // EDITORASSETLIBRARY_H

tools/editor/editor_node.cpp

@@ -61,6 +61,7 @@
 #include "plugins/sprite_frames_editor_plugin.h"
 #include "plugins/sprite_region_editor_plugin.h"
 #include "plugins/canvas_item_editor_plugin.h"
+#include "addon_editor_plugin.h"
 #include "plugins/spatial_editor_plugin.h"
 #include "plugins/sample_editor_plugin.h"
 #include "plugins/sample_library_editor_plugin.h"
@@ -6093,6 +6094,7 @@ EditorNode::EditorNode() {
 	add_editor_plugin( memnew( CanvasItemEditorPlugin(this) ) );
 	add_editor_plugin( memnew( SpatialEditorPlugin(this) ) );
 	add_editor_plugin( memnew( ScriptEditorPlugin(this) ) );
+	//add_editor_plugin( memnew( AddonEditorPlugin(this) ) );
 
 	//more visually meaningful to have this later
 	raise_bottom_panel_item(AnimationPlayerEditor::singleton);