computed.go

package hvue

import (
	"github.com/gopherjs/gopherwasm/js"
)

// Computed defines name as a computed property.  Note that name *must not* be
// set in data for this to work.  It's probably best if it's not even a slot
// in the struct.  Only access it via vm.Get.  You could also create an
// accessor; see the 04-computed-with-setter example.
//
// Computed functions require synchronous functions that can return values to
// Vue.  Go/wasm cannot support either of those things just yet.  So currently
// this function just panics.
//
// Use a watcher instead.
func Computed(name string, f func(vm *VM) interface{}) ComponentOption {
	panic("Computed not supported")
	// return func(c *Config) {
	// 	if c.Computed() == js.Undefined() {
	// 		c.SetComputed(NewObject())
	// 	}
	// 	c.Computed().Set(name, jsCallWithVM(f))
	// }
}

// ComputedWithGetSet defines name as a computed property with explicit get &
// set.  Note that name *must not* be set in data for this to work.  It's
// probably best if it's not even a slot in the struct.  Only access it via
// vm.Get/Set.  You could create an accessor; see the 04-computed-with-setter
// example.
//
// Computed functions require synchronous functions that can return values to
// Vue.  Go/wasm cannot support either of those things just yet.  So currently
// this function just panics.
//
// Use a watcher instead.
func ComputedWithGetSet(name string, get func(vm *VM) interface{}, set func(vm *VM, newValue js.Value)) ComponentOption {
	panic("ComputedWithGetSet not supported")
	// return func(c *Config) {
	// 	if c.Computed() == js.Undefined() {
	// 		c.SetComputed(NewObject())
	// 	}
	// 	c.Computed().Set(name,
	// 		map[string]interface{}{
	// 			"get": jsCallWithVM(get),
	// 			"set": NewCallback(
	// 				func(this js.Value, args []js.Value) interface{} {
	// 					vm := &VM{Value: this}
	// 					set(vm, args[0])
	// 					return nil
	// 				})})
	// 	c.Setters().Set(name, true)
	// }
}