From db397f8cda127ff5a4ef4a1436c61999f1e9b706 Mon Sep 17 00:00:00 2001
From: Max <shadow.iqka@qq.com>
Date: Tue, 30 Jul 2024 10:52:13 +0800
Subject: [PATCH] feat: add state propagation mechanism support to sui
 components

---
 sui/core/injections.go | 41 ++++++++++++++++++++++++++++++++++++++---
 1 file changed, 38 insertions(+), 3 deletions(-)

diff --git a/sui/core/injections.go b/sui/core/injections.go
index 7528537c..b63f3631 100644
--- a/sui/core/injections.go
+++ b/sui/core/injections.go
@@ -51,7 +51,7 @@ const libsuisource = `
 	}
 
 	const $utils = {
-	
+
 		RemoveClass: (element, className) => {
 			const classes = Array.isArray(className) ? className : className.split(" ");
 			classes.forEach((c) => {
@@ -80,10 +80,32 @@ const libsuisource = `
 
 	function __sui_state(component) {
 		this.handlers = component.watch || {};
-		this.Set = async function (key, value) {
+		this.Set = async function (key, value, target) {
 			const handler = this.handlers[key];
+			target = target || component.root;
 			if (handler && typeof handler === "function") {
-				await handler(value);
+				const stateObj = {
+					target: target,
+					stopPropagation: function () {
+						target.setAttribute("state-propagation", "true");
+					},
+				}
+				await handler(value, stateObj);
+				const isStopPropagation = target ? target.getAttribute("state-propagation") === "true" : false;
+				if (isStopPropagation) {
+					return;
+				}
+
+				let parent = component.root.parentElement;
+				while (parent && !parent.getAttribute("s:cn")) {
+					parent = parent.parentElement;
+				}
+				if ( parent == document.body || parent == null) {
+					return;
+				}
+				// Dispatch the state change custom event to parent component
+				const event = new CustomEvent("state:change", { detail: { key: key, value: value, target:component.root } });
+				parent.dispatchEvent(event);
 			}
 		}
 	}
@@ -268,6 +290,19 @@ const componentInitScriptTmpl = `
 	this.root = %s;
 	this.store = new __sui_store(this.root);
 	this.props = new __sui_props(this.root);
+
+	if (!this.root.getAttribute("initialized")) {
+		this.root.setAttribute("initialized", 'true');
+		this.root.addEventListener("state:change", function (event) {
+			const name = this.getAttribute("s:cn");
+			const target = event.detail.target;
+			const key = event.detail.key;
+			const value = event.detail.value;
+			const component = new window[name](this);
+			const state = new __sui_state(component);
+			state.Set(key, value, target)
+		});
+	}
 `
 
 // Inject code