react-wavesurfer
Version:
React component wrapper for wavesurfer.js
539 lines (433 loc) • 17.5 kB
JavaScript
(function webpackUniversalModuleDefinition(root, factory) {
if(typeof exports === 'object' && typeof module === 'object')
module.exports = factory(require("react"), require("wavesurfer.js"));
else if(typeof define === 'function' && define.amd)
define(["react", "wavesurfer"], factory);
else if(typeof exports === 'object')
exports["Wavesurfer"] = factory(require("react"), require("wavesurfer.js"));
else
root["Wavesurfer"] = factory(root["React"], root["WaveSurfer"]);
})(this, function(__WEBPACK_EXTERNAL_MODULE_1__, __WEBPACK_EXTERNAL_MODULE_4__) {
return /******/ (function(modules) { // webpackBootstrap
/******/ // The module cache
/******/ var installedModules = {};
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/ // Check if module is in cache
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/******/ var module = installedModules[moduleId] = {
/******/ exports: {},
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/******/ // expose the modules object (__webpack_modules__)
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/* 0 */
/***/ function(module, exports, __webpack_require__) {
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _react = __webpack_require__(1);
var _react2 = _interopRequireDefault(_react);
var _deepAssign = __webpack_require__(2);
var _deepAssign2 = _interopRequireDefault(_deepAssign);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
var WaveSurfer = __webpack_require__(4);
var EVENTS = ['audioprocess', 'error', 'finish', 'loading', 'mouseup', 'pause', 'play', 'ready', 'scroll', 'seek', 'zoom'];
/**
* @description Capitalise the first letter of a string
*/
function capitaliseFirstLetter(string) {
return string.split('-').map(function (part) {
return part.charAt(0).toUpperCase() + part.slice(1);
}).join('');
}
/**
* @description Throws an error if the prop is defined and not an integer or not positive
*/
function positiveIntegerProptype(props, propName, componentName) {
var n = props[propName];
if (n !== undefined && (typeof n !== 'number' || n !== parseInt(n, 10) || n < 0)) {
return new Error('Invalid ' + propName + ' supplied to ' + componentName + ',\n expected a positive integer');
}
return null;
}
var Wavesurfer = function (_Component) {
_inherits(Wavesurfer, _Component);
function Wavesurfer(props) {
_classCallCheck(this, Wavesurfer);
var _this = _possibleConstructorReturn(this, Object.getPrototypeOf(Wavesurfer).call(this, props));
_this.state = {
pos: 0
};
if ((typeof WaveSurfer === 'undefined' ? 'undefined' : _typeof(WaveSurfer)) === undefined) {
throw new Error('WaveSurfer is undefined!');
}
_this._wavesurfer = Object.create(WaveSurfer);
_this._isReady = false;
_this._loadMediaElt = _this._loadMediaElt.bind(_this);
_this._loadAudio = _this._loadAudio.bind(_this);
_this._seekTo = _this._seekTo.bind(_this);
return _this;
}
_createClass(Wavesurfer, [{
key: 'componentDidMount',
value: function componentDidMount() {
var _this2 = this;
var options = (0, _deepAssign2.default)({}, this.props.options, {
container: this.refs.wavesurfer
});
// media element loading is only supported by MediaElement backend
if (this.props.mediaElt) {
options.backend = 'MediaElement';
}
this._wavesurfer.init(options);
// file was loaded, wave was drawn
this._wavesurfer.on('ready', function () {
_this2._isReady = true;
// set initial position
if (_this2.props.pos) {
_this2._seekTo(_this2.props.pos);
}
// set initial volume
if (_this2.props.volume) {
_this2._wavesurfer.setVolume(_this2.props.volume);
}
// set initial zoom
if (_this2.props.zoom) {
_this2._wavesurfer.zoom(_this2.props.zoom);
}
});
this._wavesurfer.on('audioprocess', function (pos) {
_this2.setState({
pos: pos
});
_this2.props.onPosChange({
wavesurfer: _this2._wavesurfer,
originalArgs: [pos]
});
});
// `audioprocess` is not fired when seeking, so we have to plug into the
// `seek` event and calculate the equivalent in seconds (seek event
// receives a position float 0-1) – See the README.md for explanation why we
// need this
this._wavesurfer.on('seek', function (pos) {
var formattedPos = _this2._posToSec(pos);
_this2.setState({
formattedPos: formattedPos
});
_this2.props.onPosChange({
wavesurfer: _this2._wavesurfer,
originalArgs: [formattedPos]
});
});
// hook up events to callback handlers passed in as props
EVENTS.forEach(function (e) {
var propCallback = _this2.props['on' + capitaliseFirstLetter(e)];
var wavesurfer = _this2._wavesurfer;
if (propCallback) {
_this2._wavesurfer.on(e, function () {
for (var _len = arguments.length, originalArgs = Array(_len), _key = 0; _key < _len; _key++) {
originalArgs[_key] = arguments[_key];
}
propCallback({
wavesurfer: wavesurfer,
originalArgs: originalArgs
});
});
}
});
// if audioFile prop, load file
if (this.props.audioFile) {
this._loadAudio(this.props.audioFile, this.props.audioPeaks);
}
// if mediaElt prop, load media Element
if (this.props.mediaElt) {
this._loadMediaElt(this.props.mediaElt, this.props.audioPeaks);
}
}
// update wavesurfer rendering manually
}, {
key: 'componentWillReceiveProps',
value: function componentWillReceiveProps(nextProps) {
// update audioFile
if (this.props.audioFile !== nextProps.audioFile) {
this._loadAudio(nextProps.audioFile, nextProps.audioPeaks);
}
// update mediaElt
if (this.props.mediaElt !== nextProps.mediaElt) {
this._loadMediaElt(nextProps.mediaElt, nextProps.audioPeaks);
}
// update peaks
if (this.props.audioPeaks !== nextProps.audioPeaks) {
if (nextProps.mediaElt) {
this._loadMediaElt(nextProps.mediaElt, nextProps.audioPeaks);
} else {
this._loadAudio(nextProps.audioFile, nextProps.audioPeaks);
}
}
// update position
if (nextProps.pos && this._isReady && nextProps.pos !== this.props.pos && nextProps.pos !== this.state.pos) {
this._seekTo(nextProps.pos);
}
// update playing state
if (this.props.playing !== nextProps.playing || this._wavesurfer.isPlaying() !== nextProps.playing) {
if (nextProps.playing) {
this._wavesurfer.play();
} else {
this._wavesurfer.pause();
}
}
// update volume
if (this.props.volume !== nextProps.volume) {
this._wavesurfer.setVolume(nextProps.volume);
}
// update volume
if (this.props.zoom !== nextProps.zoom) {
this._wavesurfer.zoom(nextProps.zoom);
}
}
}, {
key: 'shouldComponentUpdate',
value: function shouldComponentUpdate() {
return false;
}
}, {
key: 'componentWillUnmount',
value: function componentWillUnmount() {
var _this3 = this;
// remove listeners
EVENTS.forEach(function (e) {
_this3._wavesurfer.un(e);
});
// destroy wavesurfer instance
this._wavesurfer.destroy();
}
// receives seconds and transforms this to the position as a float 0-1
}, {
key: '_secToPos',
value: function _secToPos(sec) {
return 1 / this._wavesurfer.getDuration() * sec;
}
// receives position as a float 0-1 and transforms this to seconds
}, {
key: '_posToSec',
value: function _posToSec(pos) {
return pos * this._wavesurfer.getDuration();
}
// pos is in seconds, the 0-1 proportional position we calculate here …
}, {
key: '_seekTo',
value: function _seekTo(sec) {
var pos = this._secToPos(sec);
if (this.props.options.autoCenter) {
this._wavesurfer.seekAndCenter(pos);
} else {
this._wavesurfer.seekTo(pos);
}
}
// load a media element selector or HTML element
// if selector, get the HTML element for it
// and pass to _loadAudio
}, {
key: '_loadMediaElt',
value: function _loadMediaElt(selectorOrElt, audioPeaks) {
if (selectorOrElt instanceof HTMLElement) {
this._loadAudio(selectorOrElt, audioPeaks);
} else {
if (!document.querySelector(selectorOrElt)) {
throw new Error('Media Element not found!');
}
this._loadAudio(document.querySelector(selectorOrElt), audioPeaks);
}
}
// pass audio data to wavesurfer
}, {
key: '_loadAudio',
value: function _loadAudio(audioFileOrElt, audioPeaks) {
if (audioFileOrElt instanceof HTMLElement) {
// media element
this._wavesurfer.loadMediaElement(audioFileOrElt, audioPeaks);
} else if (typeof audioFileOrElt === 'string') {
// bog-standard string is handled by load method and ajax call
this._wavesurfer.load(audioFileOrElt, audioPeaks);
} else if (audioFileOrElt instanceof Blob || audioFileOrElt instanceof File) {
// blob or file is loaded with loadBlob method
this._wavesurfer.loadBlob(audioFileOrElt, audioPeaks);
} else {
throw new Error('Wavesurfer._loadAudio expects prop audioFile\n to be either HTMLElement, string or file/blob');
}
}
}, {
key: 'render',
value: function render() {
var _this4 = this;
var childrenWithProps = this.props.children ? _react2.default.Children.map(this.props.children, function (child) {
return _react2.default.cloneElement(child, {
wavesurfer: _this4._wavesurfer,
isReady: _this4._isReady
});
}) : false;
return _react2.default.createElement(
'div',
null,
_react2.default.createElement('div', { ref: 'wavesurfer' }),
childrenWithProps
);
}
}]);
return Wavesurfer;
}(_react.Component);
Wavesurfer.propTypes = {
playing: _react.PropTypes.bool,
pos: _react.PropTypes.number,
audioFile: function audioFile(props, propName, componentName) {
var prop = props[propName];
if (prop && typeof prop !== 'string' && !prop instanceof Blob && !prop instanceof File) {
return new Error('Invalid ' + propName + ' supplied to ' + componentName + '\n expected either string or file/blob');
}
return null;
},
mediaElt: _react.PropTypes.oneOfType([_react.PropTypes.string, _react.PropTypes.instanceOf(HTMLElement)]),
audioPeaks: _react.PropTypes.array,
volume: _react.PropTypes.number,
zoom: _react.PropTypes.number,
onPosChange: _react.PropTypes.func,
children: _react.PropTypes.oneOfType([_react.PropTypes.element, _react.PropTypes.array]),
options: _react.PropTypes.shape({
audioRate: _react.PropTypes.number,
backend: _react.PropTypes.oneOf(['WebAudio', 'MediaElement']),
barWidth: function barWidth(props, propName, componentName) {
var prop = props[propName];
if (prop !== undefined && typeof prop !== 'number') {
return new Error('Invalid ' + propName + ' supplied to ' + componentName + '\n expected either undefined or number');
}
return null;
},
cursorColor: _react.PropTypes.string,
cursorWidth: positiveIntegerProptype,
dragSelection: _react.PropTypes.bool,
fillParent: _react.PropTypes.bool,
height: positiveIntegerProptype,
hideScrollbar: _react.PropTypes.bool,
interact: _react.PropTypes.bool,
loopSelection: _react.PropTypes.bool,
mediaControls: _react.PropTypes.bool,
minPxPerSec: positiveIntegerProptype,
normalize: _react.PropTypes.bool,
pixelRatio: _react.PropTypes.number,
progressColor: _react.PropTypes.string,
scrollParent: _react.PropTypes.bool,
skipLength: _react.PropTypes.number,
waveColor: _react.PropTypes.string,
autoCenter: _react.PropTypes.bool
})
};
Wavesurfer.defaultProps = {
playing: false,
pos: 0,
options: WaveSurfer.defaultParams,
onPosChange: function onPosChange() {}
};
exports.default = Wavesurfer;
/***/ },
/* 1 */
/***/ function(module, exports) {
module.exports = __WEBPACK_EXTERNAL_MODULE_1__;
/***/ },
/* 2 */
/***/ function(module, exports, __webpack_require__) {
'use strict';
var isObj = __webpack_require__(3);
var hasOwnProperty = Object.prototype.hasOwnProperty;
var propIsEnumerable = Object.prototype.propertyIsEnumerable;
function toObject(val) {
if (val === null || val === undefined) {
throw new TypeError('Sources cannot be null or undefined');
}
return Object(val);
}
function assignKey(to, from, key) {
var val = from[key];
if (val === undefined || val === null) {
return;
}
if (hasOwnProperty.call(to, key)) {
if (to[key] === undefined || to[key] === null) {
throw new TypeError('Cannot convert undefined or null to object (' + key + ')');
}
}
if (!hasOwnProperty.call(to, key) || !isObj(val)) {
to[key] = val;
} else {
to[key] = assign(Object(to[key]), from[key]);
}
}
function assign(to, from) {
if (to === from) {
return to;
}
from = Object(from);
for (var key in from) {
if (hasOwnProperty.call(from, key)) {
assignKey(to, from, key);
}
}
if (Object.getOwnPropertySymbols) {
var symbols = Object.getOwnPropertySymbols(from);
for (var i = 0; i < symbols.length; i++) {
if (propIsEnumerable.call(from, symbols[i])) {
assignKey(to, from, symbols[i]);
}
}
}
return to;
}
module.exports = function deepAssign(target) {
target = toObject(target);
for (var s = 1; s < arguments.length; s++) {
assign(target, arguments[s]);
}
return target;
};
/***/ },
/* 3 */
/***/ function(module, exports) {
'use strict';
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };
module.exports = function (x) {
var type = typeof x === 'undefined' ? 'undefined' : _typeof(x);
return x !== null && (type === 'object' || type === 'function');
};
/***/ },
/* 4 */
/***/ function(module, exports) {
module.exports = __WEBPACK_EXTERNAL_MODULE_4__;
/***/ }
/******/ ])
});
;