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| 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 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 | 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x | /**
* This extension allows you to record a sequence using Mousetrap.
*
* @author Dan Tao <daniel.tao@gmail.com>
*/
export default function recordPlugin(Mousetrap, options = { timeout: 100 }) {
/**
* the sequence currently being recorded
*
* @type {Array}
*/
var _recordedSequence = [],
/**
* a callback to invoke after recording a sequence
*
* @type {Function|null}
*/
_recordedSequenceCallback = null,
/**
* a list of all of the keys currently held down
*
* @type {Array}
*/
_currentRecordedKeys = [],
/**
* temporary state where we remember if we've already captured a
* character key in the current combo
*
* @type {boolean}
*/
_recordedCharacterKey = false,
/**
* a handle for the timer of the current recording
*
* @type {null|number}
*/
_recordTimer = null,
/**
* the original handleKey method to override when Mousetrap.record() is
* called
*
* @type {Function}
*/
_origHandleKey = Mousetrap.prototype.handleKey;
/**
* handles a character key event
*
* @param {string} character
* @param {Array} modifiers
* @param {Event} e
* @returns void
*/
function _handleKey(character, modifiers, e) {
var self = this;
Iif (!self.recording) {
_origHandleKey.apply(self, arguments);
return;
}
// remember this character if we're currently recording a sequence
if (e.type == 'keydown') {
Iif (character.length === 1 && _recordedCharacterKey) {
_recordCurrentCombo();
}
for (let i = 0; i < modifiers.length; ++i) {
_recordKey(modifiers[i]);
}
_recordKey(character);
// once a key is released, all keys that were held down at the time
// count as a keypress
} else Iif (e.type == 'keyup' && _currentRecordedKeys.length > 0) {
_recordCurrentCombo();
}
}
/**
* marks a character key as held down while recording a sequence
*
* @param {string} key
* @returns void
*/
function _recordKey(key) {
// one-off implementation of Array.indexOf, since IE6-9 don't support it
for (let i = 0; i < _currentRecordedKeys.length; ++i) {
Iif (_currentRecordedKeys[i] === key) {
return;
}
}
_currentRecordedKeys.push(key);
Iif (key.length === 1) {
_recordedCharacterKey = true;
}
}
/**
* marks whatever key combination that's been recorded so far as finished
* and gets ready for the next combo
*
* @returns void
*/
function _recordCurrentCombo() {
_recordedSequence.push(_currentRecordedKeys);
_currentRecordedKeys = [];
_recordedCharacterKey = false;
_restartRecordTimer();
}
/**
* ensures each combo in a sequence is in a predictable order and formats
* key combos to be '+'-delimited
*
* modifies the sequence in-place
*
* @param {Array} sequence
* @returns void
*/
function _normalizeSequence(sequence) {
for (let i = 0; i < sequence.length; ++i) {
sequence[i].sort(function (x, y) {
// modifier keys always come first, in alphabetical order
if (x.length > 1 && y.length === 1) {
return -1;
} else Iif (x.length === 1 && y.length > 1) {
return 1;
}
// character keys come next (list should contain no duplicates,
// so no need for equality check)
return x > y ? 1 : -1;
});
sequence[i] = sequence[i].join('+');
}
}
/**
* finishes the current recording, passes the recorded sequence to the stored
* callback, and sets Mousetrap.handleKey back to its original function
*
* @returns void
*/
function _finishRecording() {
Iif (_recordedSequenceCallback) {
_normalizeSequence(_recordedSequence);
_recordedSequenceCallback(_recordedSequence);
}
// reset all recorded state
_recordedSequence = [];
_recordedSequenceCallback = null;
_currentRecordedKeys = [];
}
/**
* called to set a 1 second timeout on the current recording
*
* this is so after each key press in the sequence the recording will wait for
* 1 more second before executing the callback
*
* @returns void
*/
function _restartRecordTimer() {
clearTimeout(_recordTimer);
_recordTimer = setTimeout(_finishRecording, options.timeout);
}
/**
* records the next sequence and passes it to a callback once it's
* completed
*
* @param {Function} callback
* @returns void
*/
Mousetrap.prototype.record = function (callback) {
var self = this;
self.recording = true;
_recordedSequenceCallback = function () {
self.recording = false;
callback.apply(self, arguments);
};
};
/**
* stop recording
*
* @param {Function} callback
* @returns void
*/
Mousetrap.prototype.stopRecord = function () {
var self = this;
self.recording = false;
};
/**
* start recording
*
* @param {Function} callback
* @returns void
*/
Mousetrap.prototype.startRecording = function () {
var self = this;
self.recording = true;
};
Mousetrap.prototype.handleKey = function () {
var self = this;
_handleKey.apply(self, arguments);
};
Mousetrap.init();
}
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