-
Notifications
You must be signed in to change notification settings - Fork 0
/
index.js
91 lines (76 loc) · 2.25 KB
/
index.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
(function() {
var React;
if (typeof require !== 'undefined') {
React = require('react');
} else if (typeof window !== 'undefined') {
React = window.React;
}
var WatchedKeyConnector = React.createClass({
displayName: 'WatchedKeyConnector',
getDefaultProps: function() {
return {
which: {},
propName: 'heldKeys',
debug: false
};
},
getInitialState: function() {
return {
heldKeys: {}
};
},
componentDidMount: function() {
addEventListener('keydown', this);
addEventListener('keyup', this);
},
componentWillUnmount: function() {
removeEventListener('keydown', this);
removeEventListener('keyup', this);
},
handleEvent: function(event) {
var keyLabel = this.props.which[event.which];
var heldKeys;
if (this.props.debug) {
console.log(event.type, event.which, keyLabel);
}
if (keyLabel !== undefined) {
heldKeys = Object.assign({}, this.state.heldKeys);
if (event.type === 'keydown') {
heldKeys[keyLabel] = true;
} else if (event.type === 'keyup') {
delete heldKeys[keyLabel];
}
this.setState({
heldKeys: heldKeys
});
}
},
render: function() {
var injectedProps = {};
injectedProps[this.props.propName] = this.state.heldKeys;
return React.cloneElement(this.props.children, injectedProps);
}
});
// TODO: Figure out decorators. Is this a decorator? I do not know.
function watchKeys(whichProp, otherProps) {
return function(ComponentClass) {
function WrappedComponent(componentProps) {
var instance = React.createElement(ComponentClass, componentProps);
return React.createElement(WatchedKeyConnector, Object.assign({
which: whichProp
}, otherProps), instance);
}
WrappedComponent.displayName = [
'WatchedKeysFor',
ComponentClass.displayName
].join('');
return WrappedComponent;
}
}
watchKeys.WatchedKeyConnector = WatchedKeyConnector;
if (typeof module !== 'undefined') {
module.exports = watchKeys;
} else if (typeof window !== 'undefined') {
window.reactWatchKeys = watchKeys;
}
}());