more UI updates

src/misc.js

@@ -130,10 +130,15 @@ export function pairPrice(baseToken, quoteToken, price, decimals=null) {
 
 export const sleep = ms => new Promise(r => setTimeout(r, ms))
 
-export function builderDefaults(builder, defaults) {
+export function builderDefaults(props, emit, defaults) {
+    let changed = false
     for (const k in defaults)
-        if (builder[k] === undefined)
-            builder[k] = defaults[k] instanceof Function ? defaults[k]() : defaults[k]
+        if (props.builder[k] === undefined) {
+            props.builder[k] = defaults[k] instanceof Function ? defaults[k]() : defaults[k]
+            changed = true
+        }
+    if (changed)
+        emit('update:builder', props.builder)
 }
 
 export function uuid() {