[v3] Add CallByID method to runtime.

v3/pkg/application/messageprocessor_call.go

@@ -7,6 +7,10 @@ import (
 	"strconv"
 )
 
+const (
+	CallBinding = 0
+)
+
 func (m *MessageProcessor) callErrorCallback(window *WebviewWindow, message string, callID *string, err error) {
 	errorMsg := fmt.Sprintf(message, err)
 	m.Error(errorMsg)
@@ -19,7 +23,7 @@ func (m *MessageProcessor) callCallback(window *WebviewWindow, callID *string, r
 	window.ExecJS(msg)
 }
 
-func (m *MessageProcessor) processCallMethod(method string, rw http.ResponseWriter, r *http.Request, window *WebviewWindow, params QueryParams) {
+func (m *MessageProcessor) processCallMethod(method int, rw http.ResponseWriter, r *http.Request, window *WebviewWindow, params QueryParams) {
 	args, err := params.Args()
 	if err != nil {
 		m.httpError(rw, "Unable to parse arguments: %s", err)
@@ -31,7 +35,7 @@ func (m *MessageProcessor) processCallMethod(method string, rw http.ResponseWrit
 		return
 	}
 	switch method {
-	case "Call":
+	case CallBinding:
 		var options CallOptions
 		err := params.ToStruct(&options)
 		if err != nil {
@@ -39,20 +43,14 @@ func (m *MessageProcessor) processCallMethod(method string, rw http.ResponseWrit
 			return
 		}
 		var boundMethod *BoundMethod
-		methodID := r.Header.Get("x-wails-method-id")
-		if methodID == "" {
+		if options.PackageName != "" {
 			boundMethod = globalApplication.bindings.Get(&options)
 			if boundMethod == nil {
 				m.callErrorCallback(window, "Error getting binding for method: %s", callID, fmt.Errorf("method '%s' not found", options.Name()))
 				return
 			}
 		} else {
-			id, err := strconv.ParseUint(methodID, 10, 32)
-			if err != nil {
-				m.callErrorCallback(window, "Error parsing method id for call: %s", callID, err)
-				return
-			}
-			boundMethod = globalApplication.bindings.GetByID(uint32(id))
+			boundMethod = globalApplication.bindings.GetByID(options.MethodID)
 		}
 		if boundMethod == nil {
 			m.callErrorCallback(window, "Error getting binding for method: %s", callID, fmt.Errorf("method ID '%s' not found", options.Name()))