custom callbacks from base element

src/common/core/BaseElement/BaseElement.ts

@@ -0,0 +1,75 @@
+import { html, render } from "@github/jtml";
+import { AppMainElement } from "components/";
+import { closest } from "core/utils";
+
+class BaseElement extends HTMLElement {
+    @closest appMain: AppMainElement;
+    private elementDisconnectCallbacks: Array<Function> = [];
+    constructor() {
+        super();
+    }
+
+    bindEvents = () => {
+        const _elems = this.querySelectorAll("[data-action]");
+        _elems?.forEach((el) => {
+            for (const action of (el.getAttribute("data-action") || "")
+                .trim()
+                .split(/\s+/)) {
+                const eventSep = action.lastIndexOf(":");
+                const methodSep = action.lastIndexOf("#");
+                const tag = action.slice(eventSep + 1, methodSep);
+
+                const type = action.slice(0, eventSep);
+                const method = action.slice(methodSep + 1);
+
+                if (tag.toUpperCase() === this.tagName) {
+                    el.addEventListener(type, this?.[method]);
+                    const _callback = () =>
+                        el.removeEventListener(type, this?.[method]);
+                    this.elementDisconnectCallbacks.push(_callback);
+                } else {
+                    this.childNodes.forEach((child: HTMLElement) => {
+                        if (child.tagName == tag.toUpperCase()) {
+                            el.addEventListener(type, child?.[method]);
+                            const _callback = () =>
+                                el.removeEventListener(type, child?.[method]);
+                            this.elementDisconnectCallbacks.push(_callback);
+                        }
+                    });
+                }
+            }
+        });
+    };
+
+    render = () => {
+        return html``;
+    };
+
+    update = () => {
+        render(this.render(), this);
+        this.bindEvents();
+    };
+
+    connectedCallback() {
+        this.elementConnected();
+    }
+
+    disconnectedCallback() {
+        this.elementDisconnected();
+        if (Array.isArray(this.elementDisconnectCallbacks)) {
+            this.elementDisconnectCallbacks.forEach((callback: Function) => {
+                if (typeof callback == "function") {
+                    callback();
+                }
+            });
+        }
+    }
+
+    elementConnected = () => {
+        this.update();
+    };
+
+    elementDisconnected = () => {};
+}
+
+export default BaseElement;