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adumesnyadumesny
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fixed React demo formatting
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‎demo/react-hooks-controlled-multiple.html

Lines changed: 135 additions & 158 deletions
Original file line numberDiff line numberDiff line change
@@ -2,172 +2,149 @@
22
<html>
33

44
<head>
5-
<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
7-
<title>Gridstack.js React integration example</title>
8-
<link rel="stylesheet" href="demo.css" />
9-
<script src="../dist/gridstack-all.js"></script>
10-
11-
<!-- Scripts to use react inside html -->
12-
<script src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
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<script src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
14-
<script src="https://unpkg.com/babel-standalone@6.15.0/babel.min.js"></script>
5+
<meta charset="UTF-8" />
6+
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
7+
<title>Gridstack.js React integration example</title>
8+
<link rel="stylesheet" href="demo.css" />
9+
<script src="../dist/gridstack-all.js"></script>
10+
11+
<!-- Scripts to use react inside html -->
12+
<script src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
13+
<script src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
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<script src="https://unpkg.com/babel-standalone@6.15.0/babel.min.js"></script>
1515
</head>
1616

1717
<body>
18-
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<div>
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<h2>Controlled stack</h2>
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<div id="controlled-stack"></div>
22-
</div>
23-
18+
<div>
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<h2>Controlled stack</h2>
20+
<div id="controlled-stack"></div>
21+
</div>
2422
</body>
2523

2624
<script type="text/babel">
27-
const { useState, useEffect, useLayoutEffect, createRef, useRef } = React
28-
29-
const Item = ({ id }) => <div>I am item: {id}</div>
30-
31-
//
32-
// Controlled example
33-
//
34-
const ControlledStack = ({ items, addItem, removeItem, id }) => {
35-
const refs = useRef({})
36-
const gridRef = useRef()
37-
refs.current = {}
38-
39-
if (Object.keys(refs.current).length !== items.length) {
40-
items.forEach(({ id }) => {
41-
refs.current[id] = refs.current[id] || createRef()
42-
})
43-
}
44-
45-
46-
useLayoutEffect(() => {
47-
48-
gridRef.current =
49-
// gridRef.current ||
50-
GridStack.init(
51-
{
52-
float: true,
53-
acceptWidgets: true,
54-
},
55-
`.controlled-${id}`
56-
)
57-
58-
const grid = gridRef.current
59-
60-
grid.on('removed', (e, el) => {
61-
const elId = Array.isArray(el) ? el[el.length - 1].id : el.id;
62-
removeItem(elId.split(':')[1])
63-
})
64-
65-
grid.on('dropped', (e, p, n) => {
66-
console.log('dropped', p, n)
67-
68-
// Remove "placeholder" item
69-
// Gridstack creates a DOM element for dropped items, those need to be removed
70-
// as they are rendered by React
71-
grid.getGridItems().forEach((item) => {
72-
const ids = item.getAttribute('gs-id').split(':')
73-
if (ids[0] !== id) {
74-
grid.removeWidget(item, true, false);
75-
}
76-
});
77-
addItem({ id: n.id.split(':')[1], x: n.x, y: n.y, w: n.w, h: n.h })
78-
})
79-
80-
grid.batchUpdate()
81-
82-
83-
items.forEach((a) => {
84-
// remove existing widgets
85-
if (refs.current[a.id] && refs.current[a.id].current) {
86-
grid.removeWidget(refs.current[a.id].current, false, false)
87-
}
88-
89-
grid.makeWidget(refs.current[a.id].current)
90-
})
91-
grid.batchUpdate(false)
92-
93-
94-
95-
}, [items])
96-
97-
useEffect(() => {
98-
return () => {
99-
// console.log('cleanup', id)
100-
// gridRef.current.destroy(false, false)
101-
// gridRef.current = null
102-
}
103-
})
104-
105-
106-
107-
108-
return (
109-
<div style={{ width: '100%' }}>
110-
<div className={`grid-stack controlled-${id}`}>
111-
{items.map((item, i) => {
112-
// console.log('render', id, item.id)
113-
return (
114-
<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}>
115-
<div className="grid-stack-item-content">
116-
<Item {...item} />
117-
</div>
118-
</div>
119-
)
120-
})}
121-
</div>
122-
<code>
123-
<pre>{JSON.stringify(items, null, 2)}</pre>
124-
</code>
125-
</div>
126-
)
25+
const { useState, useEffect, useLayoutEffect, createRef, useRef } = React
26+
const Item = ({ id }) => <div>I am item: {id}</div>
27+
28+
//
29+
// Controlled example
30+
//
31+
const ControlledStack = ({ items, addItem, removeItem, id }) => {
32+
const refs = useRef({})
33+
const gridRef = useRef()
34+
refs.current = {}
35+
36+
if (Object.keys(refs.current).length !== items.length) {
37+
items.forEach(({ id }) => {
38+
refs.current[id] = refs.current[id] || createRef()
39+
})
12740
}
12841

129-
const ControlledExample = () => {
130-
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 }])
131-
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 }])
132-
133-
return (
134-
<div style={{
135-
display: 'flex'
136-
}}>
137-
<div style={{ display: 'flex', width: '50%' }}>
138-
<ControlledStack
139-
id='gs1'
140-
items={items1}
141-
addItem={(item) => {
142-
setItems1([...items1, item])
143-
}}
144-
removeItem={(id) => {
145-
setItems1(items1.filter(i => i.id !== id))
146-
}}
147-
/>
148-
</div >
149-
<div style={{ display: 'flex', width: '50%' }}>
150-
<ControlledStack
151-
id='gs2'
152-
items={items2}
153-
addItem={(item) => {
154-
setItems2([...items2, item])
155-
}}
156-
removeItem={(id) => {
157-
setItems2(items2.filter(i => i.id !== id))
158-
}}
159-
/>
160-
161-
</div>
162-
163-
</div >
42+
useLayoutEffect(() => {
43+
gridRef.current =
44+
// gridRef.current ||
45+
GridStack.init(
46+
{
47+
float: true,
48+
acceptWidgets: true,
49+
},
50+
`.controlled-${id}`
16451
)
165-
}
166-
167-
168-
169-
ReactDOM.render(<ControlledExample />, document.getElementById('controlled-stack'))
170-
52+
const grid = gridRef.current
53+
54+
grid.on('removed', (e, el) => {
55+
const elId = Array.isArray(el) ? el[el.length - 1].id : el.id;
56+
removeItem(elId.split(':')[1])
57+
})
58+
59+
grid.on('dropped', (e, p, n) => {
60+
console.log('dropped', p, n)
61+
// Remove "placeholder" item
62+
// Gridstack creates a DOM element for dropped items, those need to be removed
63+
// as they are rendered by React
64+
grid.getGridItems().forEach((item) => {
65+
const ids = item.getAttribute('gs-id').split(':')
66+
if (ids[0] !== id) {
67+
grid.removeWidget(item, true, false);
68+
}
69+
});
70+
addItem({ id: n.id.split(':')[1], x: n.x, y: n.y, w: n.w, h: n.h })
71+
})
72+
73+
grid.batchUpdate()
74+
items.forEach((a) => {
75+
// remove existing widgets
76+
if (refs.current[a.id] && refs.current[a.id].current) {
77+
grid.removeWidget(refs.current[a.id].current, false, false)
78+
}
79+
grid.makeWidget(refs.current[a.id].current)
80+
})
81+
grid.batchUpdate(false)
82+
83+
}, [items])
84+
85+
useEffect(() => {
86+
return () => {
87+
// console.log('cleanup', id)
88+
// gridRef.current.destroy(false, false)
89+
// gridRef.current = null
90+
}
91+
})
92+
93+
return (
94+
<div style={{ width: '100%' }}>
95+
<div className={`grid-stack controlled-${id}`}>
96+
{items.map((item, i) => {
97+
// console.log('render', id, item.id)
98+
return (
99+
<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}>
100+
<div className="grid-stack-item-content">
101+
<Item {...item} />
102+
</div>
103+
</div>
104+
)
105+
})}
106+
</div>
107+
<code>
108+
<pre>{JSON.stringify(items, null, 2)}</pre>
109+
</code>
110+
</div>
111+
)
112+
}
113+
114+
const ControlledExample = () => {
115+
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 }])
116+
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 }])
117+
118+
return (
119+
<div style={{display: 'flex'}}>
120+
<div style={{ display: 'flex', width: '50%' }}>
121+
<ControlledStack
122+
id='gs1'
123+
items={items1}
124+
addItem={(item) => {
125+
setItems1([...items1, item])
126+
}}
127+
removeItem={(id) => {
128+
setItems1(items1.filter(i => i.id !== id))
129+
}}
130+
/>
131+
</div >
132+
<div style={{ display: 'flex', width: '50%' }}>
133+
<ControlledStack
134+
id='gs2'
135+
items={items2}
136+
addItem={(item) => {
137+
setItems2([...items2, item])
138+
}}
139+
removeItem={(id) => {
140+
setItems2(items2.filter(i => i.id !== id))
141+
}}
142+
/>
143+
</div>
144+
</div >
145+
)
146+
}
147+
148+
ReactDOM.render(<ControlledExample />, document.getElementById('controlled-stack'))
171149
</script>
172-
173150
</html>

‎demo/react-hooks.html

Lines changed: 4 additions & 19 deletions
Original file line numberDiff line numberDiff line change
@@ -18,7 +18,7 @@
1818
<div>
1919
<h1>Using GridStack.js with React hooks</h1>
2020
<p>
21-
As with any virtualDOM-based framework, you need to check if Reacthas rendered the DOM (or any updates to it)
21+
As with any virtual DOM based framework, you need to check if Reacthas rendered the DOM (or any updates to it)
2222
<strong>before</strong> you initialize GridStack or call its methods. This example shows how to make rendered
2323
components widgets:
2424
</p>
@@ -41,13 +41,11 @@ <h2>Uncontrolled stack</h2>
4141

4242
<script type="text/babel">
4343
const { useState, useEffect, createRef, useRef } = React
44-
4544
const Item = ({ id }) => <div>I am item: {id}</div>
4645

4746
//
4847
// Controlled example
4948
//
50-
5149
const ControlledStack = ({ items, addItem }) => {
5250
const refs = useRef({})
5351
const gridRef = useRef()
@@ -59,14 +57,8 @@ <h2>Uncontrolled stack</h2>
5957
}
6058

6159
useEffect(() => {
62-
gridRef.current =
63-
gridRef.current ||
64-
GridStack.init(
65-
{
66-
float: true,
67-
},
68-
'.controlled'
69-
)
60+
gridRef.current = gridRef.current ||
61+
GridStack.init({float: true}, '.controlled')
7062
const grid = gridRef.current
7163
grid.batchUpdate()
7264
grid.removeAll(false)
@@ -94,7 +86,6 @@ <h2>Uncontrolled stack</h2>
9486

9587
const ControlledExample = () => {
9688
const [items, setItems] = useState([{ id: 'item-1' }, { id: 'item-2' }])
97-
9889
return (
9990
<ControlledStack
10091
items={items}
@@ -106,10 +97,8 @@ <h2>Uncontrolled stack</h2>
10697
//
10798
// Uncontrolled example
10899
//
109-
110100
const UncontrolledExample = () => {
111101
const gridRef = useRef()
112-
113102
const [state, setState] = useState({
114103
count: 0,
115104
info: '',
@@ -123,8 +112,7 @@ <h2>Uncontrolled stack</h2>
123112
})
124113

125114
useEffect(() => {
126-
gridRef.current =
127-
gridRef.current ||
115+
gridRef.current = gridRef.current ||
128116
GridStack.init(
129117
{
130118
float: true,
@@ -133,7 +121,6 @@ <h2>Uncontrolled stack</h2>
133121
},
134122
'.uncontrolled'
135123
)
136-
137124
const grid = gridRef.current
138125

139126
grid.on('dragstop', (event, element) => {
@@ -183,7 +170,5 @@ <h2>Uncontrolled stack</h2>
183170

184171
ReactDOM.render(<ControlledExample />, document.getElementById('controlled-stack'))
185172
ReactDOM.render(<UncontrolledExample />, document.getElementById('uncontrolled-stack'))
186-
187173
</script>
188-
189174
</html>

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