Merge pull request #48719 from Faless/js/4.x_interfaces

[HTML5] Implement Godot <-> JavaScript interface.

2 files changed, 51 insertions, 5 deletions

diff --git a/platform/javascript/api/api.cpp b/platform/javascript/api/api.cpp
index 2f7bde065f..039ce815e4 100644
--- a/platform/javascript/api/api.cpp
+++ b/platform/javascript/api/api.cpp
@@ -30,13 +30,14 @@
 
 #include "api.h"
 #include "core/config/engine.h"
-#include "javascript_eval.h"
+#include "javascript_singleton.h"
 #include "javascript_tools_editor_plugin.h"
 
 static JavaScript *javascript_eval;
 
 void register_javascript_api() {
 	JavaScriptToolsEditorPlugin::initialize();
+	ClassDB::register_virtual_class<JavaScriptObject>();
 	ClassDB::register_virtual_class<JavaScript>();
 	javascript_eval = memnew(JavaScript);
 	Engine::get_singleton()->add_singleton(Engine::Singleton("JavaScript", javascript_eval));
@@ -61,10 +62,41 @@ JavaScript::~JavaScript() {}
 
 void JavaScript::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("eval", "code", "use_global_execution_context"), &JavaScript::eval, DEFVAL(false));
+	ClassDB::bind_method(D_METHOD("get_interface", "interface"), &JavaScript::get_interface);
+	ClassDB::bind_method(D_METHOD("create_callback", "callable"), &JavaScript::create_callback);
+	{
+		MethodInfo mi;
+		mi.name = "create_object";
+		mi.arguments.push_back(PropertyInfo(Variant::STRING, "object"));
+		ClassDB::bind_vararg_method(METHOD_FLAGS_DEFAULT, "create_object", &JavaScript::_create_object_bind, mi);
+	}
 }
 
 #if !defined(JAVASCRIPT_ENABLED) || !defined(JAVASCRIPT_EVAL_ENABLED)
 Variant JavaScript::eval(const String &p_code, bool p_use_global_exec_context) {
 	return Variant();
 }
+
+Ref<JavaScriptObject> JavaScript::get_interface(const String &p_interface) {
+	return Ref<JavaScriptObject>();
+}
+
+Ref<JavaScriptObject> JavaScript::create_callback(const Callable &p_callable) {
+	return Ref<JavaScriptObject>();
+}
+
+Variant JavaScript::_create_object_bind(const Variant **p_args, int p_argcount, Callable::CallError &r_error) {
+	if (p_argcount < 1) {
+		r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
+		r_error.argument = 0;
+		return Ref<JavaScriptObject>();
+	}
+	if (p_args[0]->get_type() != Variant::STRING) {
+		r_error.error = Callable::CallError::CALL_ERROR_INVALID_ARGUMENT;
+		r_error.argument = 0;
+		r_error.expected = Variant::STRING;
+		return Ref<JavaScriptObject>();
+	}
+	return Ref<JavaScriptObject>();
+}
 #endif
diff --git a/platform/javascript/api/javascript_eval.h b/platform/javascript/api/javascript_singleton.h
index 24f7648ed9..45e9950acb 100644
--- a/platform/javascript/api/javascript_eval.h
+++ b/platform/javascript/api/javascript_singleton.h
@@ -1,5 +1,5 @@
 /*************************************************************************/
-/*  javascript_eval.h                                                    */
+/*  javascript_singleton.h                                               */
 /*************************************************************************/
 /*                       This file is part of:                           */
 /*                           GODOT ENGINE                                */
@@ -28,10 +28,21 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#ifndef JAVASCRIPT_EVAL_H
-#define JAVASCRIPT_EVAL_H
+#ifndef JAVASCRIPT_SINGLETON_H
+#define JAVASCRIPT_SINGLETON_H
 
 #include "core/object/class_db.h"
+#include "core/object/reference.h"
+
+class JavaScriptObject : public Reference {
+private:
+	GDCLASS(JavaScriptObject, Reference);
+
+protected:
+	virtual bool _set(const StringName &p_name, const Variant &p_value) { return false; }
+	virtual bool _get(const StringName &p_name, Variant &r_ret) const { return false; }
+	virtual void _get_property_list(List<PropertyInfo> *p_list) const {}
+};
 
 class JavaScript : public Object {
 private:
@@ -44,10 +55,13 @@ protected:
 
 public:
 	Variant eval(const String &p_code, bool p_use_global_exec_context = false);
+	Ref<JavaScriptObject> get_interface(const String &p_interface);
+	Ref<JavaScriptObject> create_callback(const Callable &p_callable);
+	Variant _create_object_bind(const Variant **p_args, int p_argcount, Callable::CallError &r_error);
 
 	static JavaScript *get_singleton();
 	JavaScript();
 	~JavaScript();
 };
 
-#endif // JAVASCRIPT_EVAL_H
+#endif // JAVASCRIPT_SINGLETON_H