sl tab wrappers

static/app.mjs

@@ -1,25 +1,101 @@
 // js/elemwrapper.js
 var ElemWrapper = class _ElemWrapper {
   elem;
+  appendChild;
+  setAttribute;
+  style;
+  classList;
+  addEventListener;
+  remove;
+  cloneNode;
+  contains;
+  querySelectorAll;
   constructor(elem) {
     this.elem = elem;
+    this.appendChild = this.elem.appendChild.bind(this.elem);
+    this.setAttribute = this.elem.setAttribute.bind(this.elem);
+    this.style = this.elem.style;
+    this.classList = this.elem.classList;
+    this.addEventListener = this.elem.addEventListener.bind(this.elem);
+    this.remove = this.elem.remove.bind(this.elem);
+    this.cloneNode = this.elem.cloneNode.bind(this.elem);
+    this.contains = this.elem.contains.bind(this.elem);
+    this.querySelectorAll = this.elem.querySelectorAll.bind(this.elem);
+  }
+  static create(tagName) {
+    return new _ElemWrapper(document.createElement(tagName));
+  }
+  append(elem) {
+    this.appendChild(elem.elem);
+  }
+  appendAfterLastChild(tagName, elem) {
+    const children = this.querySelectorAll(tagName);
+    if (children.length > 0) {
+      const lastChild = children[children.length - 1];
+      lastChild.after(elem.elem);
+    } else {
+      this.appendChild(elem.elem);
+    }
   }
   add(name, ...attrs) {
-    const elem = document.createElement(name);
-    this.elem.appendChild(elem);
+    const elem = _ElemWrapper.create(name);
+    this.append(elem);
     for (let i = 0; i < attrs.length; i += 2) {
       elem.setAttribute(attrs[i], attrs[i + 1]);
     }
-    return new _ElemWrapper(elem);
+    return elem;
+  }
+};
+
+// js/sltab.js
+var SLTab = class extends ElemWrapper {
+  constructor(panel) {
+    super(document.createElement("sl-tab"));
+    this.setAttribute("panel", panel);
+    this.setAttribute("slot", "nav");
+  }
+};
+
+// js/sltabpanel.js
+var SLTabPanel = class extends ElemWrapper {
+  constructor(name) {
+    super(document.createElement("sl-tab-panel"));
+    this.setAttribute("name", name);
+  }
+};
+
+// js/sltabgroup.js
+var SLTabGroup = class extends ElemWrapper {
+  constructor() {
+    super(document.createElement("sl-tab-group"));
+  }
+  addTab(panel) {
+    const tab = new SLTab(panel);
+    this.appendAfterLastChild("sl-tab", tab);
+    return tab;
+  }
+  addTabPanel(name) {
+    const tabPanel = new SLTabPanel(name);
+    this.appendAfterLastChild("sl-tab-panel", tabPanel);
+    return tabPanel;
+  }
+  addTabSet(name) {
+    return [
+      this.addTab(name),
+      this.addTabPanel(name)
+    ];
   }
 };
 
 // js/main.js
 async function main() {
   const root = new ElemWrapper(document.body);
-  const tabGroup = root.add("sl-tab-group");
-  tabGroup.add("sl-tab", "slot", "nav", "panel", "tasks", "active", "").add("sl-icon", "name", "slash-circle", "style", "font-size: 20px");
-  tabGroup.add("sl-tab", "slot", "nav", "panel", "tags").add("sl-icon", "name", "tags", "style", "font-size: 20px");
+  const tabGroup = new SLTabGroup();
+  root.append(tabGroup);
+  const [tasksTab, tasksPanel] = tabGroup.addTabSet("tasks");
+  tasksTab.add("sl-icon", "name", "slash-circle", "style", "font-size: 20px");
+  const [tagsTab, tagsPanel] = tabGroup.addTabSet("tags");
+  tagsTab.add("sl-icon", "name", "tags", "style", "font-size: 20px");
 }
 document.addEventListener("DOMContentLoaded", main);
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