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Multiple controlled grids with React #1

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6 changes: 5 additions & 1 deletion demo/index.html
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Original file line number Diff line number Diff line change
@@ -1,9 +1,11 @@
<!DOCTYPE html>
<html>

<head>
<meta charset="utf-8">
<title>Demo</title>
</head>

<body>
<h1>Demos</h1>
<ul>
Expand All @@ -19,6 +21,7 @@ <h1>Demos</h1>
<li><a href="nested_constraint.html">Nested Constraint grids</a></li>
<li><a href="nested_advanced.html">Nested Advanced grids</a></li>
<li><a href="react-hooks.html">ReactJS (Hooks)</a></li>
<li><a href="react-hooks-controlled-multiple.html">ReactJS (Hooks), mulitple, controlled</a></li>
<li><a href="react.html">ReactJS</a></li>
<li><a href="responsive.html">Responsive</a></li>
<li><a href="right-to-left(rtl).html">Right-To-Left (RTL)</a></li>
Expand All @@ -39,4 +42,5 @@ <h1>Old v5.1.1 Jquery Demos</h1>
<li><a href="nested-jq.html">Nested grids</a></li>
</ul>
</body>
</html>

</html>
173 changes: 173 additions & 0 deletions demo/react-hooks-controlled-multiple.html
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@@ -0,0 +1,173 @@
<!DOCTYPE html>
<html>

<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Gridstack.js React integration example</title>
<link rel="stylesheet" href="demo.css" />
<script src="../dist/gridstack-all.js"></script>

<!-- Scripts to use react inside html -->
<script src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<script src="https://unpkg.com/babel-standalone@6.15.0/babel.min.js"></script>
</head>

<body>

<div>
<h2>Controlled stack</h2>
<div id="controlled-stack"></div>
</div>

</body>

<script type="text/babel">
const { useState, useEffect, useLayoutEffect, createRef, useRef } = React

const Item = ({ id }) => <div>I am item: {id}</div>

//
// Controlled example
//
const ControlledStack = ({ items, addItem, removeItem, id }) => {
const refs = useRef({})
const gridRef = useRef()
refs.current = {}

if (Object.keys(refs.current).length !== items.length) {
items.forEach(({ id }) => {
refs.current[id] = refs.current[id] || createRef()
})
}


useLayoutEffect(() => {

gridRef.current =
// gridRef.current ||
GridStack.init(
{
float: true,
acceptWidgets: true,
},
`.controlled-${id}`
)

const grid = gridRef.current

grid.on('removed', (e, el) => {
const elId = Array.isArray(el) ? el[el.length - 1].id : el.id;
removeItem(elId.split(':')[1])
})

grid.on('dropped', (e, p, n) => {
console.log('dropped', p, n)

// Remove "placeholder" item
// Gridstack creates a DOM element for dropped items, those need to be removed
// as they are rendered by React
grid.getGridItems().forEach((item) => {
const ids = item.getAttribute('gs-id').split(':')
if (ids[0] !== id) {
grid.removeWidget(item, true, false);
}
});
addItem({ id: n.id.split(':')[1], x: n.x, y: n.y, w: n.w, h: n.h })
})

grid.batchUpdate()


items.forEach((a) => {
// remove existing widgets
if (refs.current[a.id] && refs.current[a.id].current) {
grid.removeWidget(refs.current[a.id].current, false, false)
}

grid.makeWidget(refs.current[a.id].current)
})
grid.batchUpdate(false)



}, [items])

useEffect(() => {
return () => {
// console.log('cleanup', id)
// gridRef.current.destroy(false, false)
// gridRef.current = null
}
})




return (
<div style={{ width: '100%' }}>
<div className={`grid-stack controlled-${id}`}>
{items.map((item, i) => {
// console.log('render', id, item.id)
return (
<div ref={refs.current[item.id]} key={`${id}-${item.id}`} className={'grid-stack-item'} gs-id={`${id}:${item.id}`} gs-w={item.w} gs-h={item.h} gs-x={item.x} gs-y={item.y}>
<div className="grid-stack-item-content">
<Item {...item} />
</div>
</div>
)
})}
</div>
<code>
<pre>{JSON.stringify(items, null, 2)}</pre>
</code>
</div>
)
}

const ControlledExample = () => {
const [items1, setItems1] = useState([{ id: 'item-1-1', x: 0, y: 0, w: 2, h: 2 }, { id: 'item-1-2', x: 2, y: 0, w: 2, h: 2 }])
const [items2, setItems2] = useState([{ id: 'item-2-1', x: 0, y: 0, w: 1, h: 1 }, { id: 'item-2-2', x: 0, y: 1, w: 1, h: 1 }, { id: 'item-2-3', x: 1, y: 0, w: 1, h: 1 }])

return (
<div style={{
display: 'flex'
}}>
<div style={{ display: 'flex', width: '50%' }}>
<ControlledStack
id='gs1'
items={items1}
addItem={(item) => {
setItems1([...items1, item])
}}
removeItem={(id) => {
setItems1(items1.filter(i => i.id !== id))
}}
/>
</div >
<div style={{ display: 'flex', width: '50%' }}>
<ControlledStack
id='gs2'
items={items2}
addItem={(item) => {
setItems2([...items2, item])
}}
removeItem={(id) => {
setItems2(items2.filter(i => i.id !== id))
}}
/>

</div>

</div >
)
}



ReactDOM.render(<ControlledExample />, document.getElementById('controlled-stack'))

</script>

</html>