From d3f5634b77835fe4ce5a8266629be9fb04e89a57 Mon Sep 17 00:00:00 2001
From: Andy Bulka <abulka@gmail.com>
Date: Sun, 29 Dec 2024 20:40:00 +1100
Subject: [PATCH 1/2] new demo - Vue3 render functions with GridStack.renderCB

---
 demo/vue3js_dynamic-modern-renderCB.html | 156 +++++++++++++++++++++++
 1 file changed, 156 insertions(+)
 create mode 100644 demo/vue3js_dynamic-modern-renderCB.html
diff --git a/demo/vue3js_dynamic-modern-renderCB.html b/demo/vue3js_dynamic-modern-renderCB.html
new file mode 100644
index 000000000..a5545c251
--- /dev/null
+++ b/demo/vue3js_dynamic-modern-renderCB.html
@@ -0,0 +1,156 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+  <meta charset="UTF-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+  <title>Vue3 Gridstack: Gridstack DOM with Vue Rendering</title>
+  <link rel="stylesheet" href="demo.css" />
+  <script src="../dist/gridstack-all.js"></script>
+</head>
+
+<body>
+  <main id="app">
+    <a href="./index.html">Back to All Demos</a>
+    <h1>Vue3: Gridstack Controls Vue Rendering Grid Items</h1>
+    <p>
+      <strong>Use Vue3 render functions with GridStack.renderCB</strong><br />
+      GridStack handles widget creation and Vue handles rendering the content using the modern (since V11) GridStack.renderCB.
+    </p>
+    <p>
+      Helpful Resources:
+    <ul>
+      <li><a href="https://vuejs.org/guide/extras/render-function.html#render-functions-jsx" target="_blank">Vue Render Functions</a></li>
+    </ul>
+    </p>
+    <button type="button" @click="addNewWidget">Add Widget</button> {{ info }}
+    <div class="grid-stack"></div>
+  </main>
+  <script type="module">
+    import { createApp, ref, onMounted, onBeforeUnmount, h, render, toRefs } from "https://cdn.jsdelivr.net/npm/vue@3.0.11/dist/vue.esm-browser.js";
+
+    const GridItemComponent = {
+      props: {
+        itemId: {
+          type: [String, Number],
+          required: true,
+        },
+      },
+      emits: ['remove'],
+      setup(props, { emit }) {
+        const { itemId } = toRefs(props)
+
+        onBeforeUnmount(() => {
+          console.log(`In vue onBeforeUnmount for item ${itemId.value}`)
+        });
+
+        function handleRemove() {
+          emit('remove')
+        }
+
+        return {
+          itemId,
+          handleRemove,
+        }
+      },
+      template: `
+        <button @click="handleRemove">X</button>
+        <p>
+            Vue Grid Item {{ itemId }}
+        </p>
+        `
+    }
+
+    createApp({
+      setup() {
+        let info = ref("");
+        let grid = null;
+        const items = [
+          { id: 1, x: 2, y: 1, h: 2 },
+          { id: 2, x: 2, y: 4, w: 3 },
+          { id: 3, x: 4, y: 2 },
+          { id: 4, x: 3, y: 1, h: 2 },
+          { id: 5, x: 0, y: 6, w: 2, h: 2 },
+        ];
+        let count = ref(items.length);
+        const shadowDom = {}
+
+        onMounted(() => {
+          grid = GridStack.init({
+            float: true,
+            cellHeight: "70px",
+            minRow: 1,
+          });
+
+          // Listen for remove events to clean up Vue renders
+          grid.on('removed', function (event, items) {
+            items.forEach(item => {
+              if (shadowDom[item.id]) {
+                render(null, shadowDom[item.id]);
+                delete shadowDom[item.id];
+              }
+            });
+          });
+
+          GridStack.renderCB = function (el, widget) {
+            // el: HTMLElement div.grid-stack-item-content
+            // widget: GridStackWidget
+
+            const gridItemEl = el.closest('.grid-stack-item'); // div.grid-stack-item (parent of el)
+
+            // Create Vue component for the widget content
+            const itemId = widget.id
+            const widgetNode = h(GridItemComponent, {
+              itemId: itemId,
+              onRemove: () => { // Catch the remove event from the Vue component
+                grid.removeWidget(gridItemEl); // div.grid-stack-item
+                info.value = `Widget ${itemId} removed`;
+              }
+            })
+            shadowDom[itemId] = el
+            render(widgetNode, el) // Render Vue component into the GridStack-created element
+          }
+
+          grid.load(items);
+        });
+
+        onBeforeUnmount(() => {
+          // Clean up Vue renders
+          Object.values(shadowDom).forEach(el => {
+            render(null, el)
+          })
+        });
+
+        function addNewWidget() {
+          const node = items[count.value] || {
+            x: Math.round(12 * Math.random()),
+            y: Math.round(5 * Math.random()),
+            w: Math.round(1 + 3 * Math.random()),
+            h: Math.round(1 + 3 * Math.random()),
+          };
+          node.id = String(count.value++);
+          grid.addWidget(node);
+          info.value = `Widget ${node.id} added`;
+        }
+
+        return {
+          info,
+          addNewWidget,
+        };
+      },
+
+      watch: {
+        info: function (newVal) {
+          if (newVal.length === 0) return;
+
+          window.clearTimeout(this.timerId);
+          this.timerId = window.setTimeout(() => {
+            this.info = "";
+          }, 2000);
+        },
+      },
+    }).mount("#app");
+  </script>
+</body>
+
+</html>
\ No newline at end of file

From 376e4074dda1634d4dc26610bdb4c71fdaaa24c8 Mon Sep 17 00:00:00 2001
From: Andy Bulka <abulka@gmail.com>
Date: Sun, 29 Dec 2024 22:45:05 +1100
Subject: [PATCH 2/2] ported demo to stackblitz.com

---
 demo/vue3js_dynamic-modern-renderCB.html | 1 +
 1 file changed, 1 insertion(+)

diff --git a/demo/vue3js_dynamic-modern-renderCB.html b/demo/vue3js_dynamic-modern-renderCB.html
index a5545c251..8fc0e628e 100644
--- a/demo/vue3js_dynamic-modern-renderCB.html
+++ b/demo/vue3js_dynamic-modern-renderCB.html
@@ -21,6 +21,7 @@ <h1>Vue3: Gridstack Controls Vue Rendering Grid Items</h1>
       Helpful Resources:
     <ul>
       <li><a href="https://vuejs.org/guide/extras/render-function.html#render-functions-jsx" target="_blank">Vue Render Functions</a></li>
+      <li><a href="https://stackblitz.com/edit/vitejs-vite-phhdkeju" target="_blank">This Demo as a Vue SFC on Stackblitz</a></li>
     </ul>
     </p>
     <button type="button" @click="addNewWidget">Add Widget</button> {{ info }}
