ami-cjs.js
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JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
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 _helpers = require('../helpers/helpers.progressbar');
var _helpers2 = _interopRequireDefault(_helpers);
var _events = require('events');
var _events2 = _interopRequireDefault(_events);
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; } /** Imports **/
/**
*
* It is typically used to load a DICOM image. Use loading manager for
* advanced usage, such as multiple files handling.
*
* Demo: {@link https://fnndsc.github.io/vjs#loader_dicom}
*
* @module loaders/base
* @extends EventEmitter
* @example
* var files = ['/data/dcm/fruit'];
*
* // Instantiate a dicom loader
* var lDicomoader = new dicom();
*
* // load a resource
* loader.load(
* // resource URL
* files[0],
* // Function when resource is loaded
* function(object) {
* //scene.add( object );
* window.console.log(object);
* }
* );
*/
var LoadersBase = function (_EventEmitter) {
_inherits(LoadersBase, _EventEmitter);
/**
* Create a Loader.
* @param {dom} container - The dom container of loader.
* @param {object} ProgressBar - The progressbar of loader.
*/
function LoadersBase() {
var container = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;
var ProgressBar = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : _helpers2.default;
_classCallCheck(this, LoadersBase);
var _this = _possibleConstructorReturn(this, (LoadersBase.__proto__ || Object.getPrototypeOf(LoadersBase)).call(this));
_this._loaded = -1;
_this._totalLoaded = -1;
_this._parsed = -1;
_this._totalParsed = -1;
_this._data = [];
_this._container = container;
_this._progressBar = null;
if (_this._container && ProgressBar) {
_this._progressBar = new ProgressBar(_this._container);
}
return _this;
}
/**
* free the reference.
*/
_createClass(LoadersBase, [{
key: 'free',
value: function free() {
this._container = null;
// this._helpersProgressBar = null;
if (this._progressBar) {
this._progressBar.free();
this._progressBar = null;
}
}
/**
* load the resource by url.
* @param {string} url - resource url.
* @return {promise} promise.
*/
}, {
key: 'fetch',
value: function fetch(url) {
var _this2 = this;
return new Promise(function (resolve, reject) {
var request = new XMLHttpRequest();
request.open('GET', url);
request.crossOrigin = true;
request.responseType = 'arraybuffer';
request.onloadstart = function (event) {
// emit 'fetch-start' event
_this2.emit('fetch-start', {
file: url,
time: new Date()
});
};
request.onload = function (event) {
if (request.status === 200) {
_this2._loaded = event.loaded;
_this2._totalLoaded = event.total;
// will be removed after eventer set up
if (_this2._progressBar) {
_this2._progressBar.update(_this2._loaded, _this2._totalLoaded, 'load');
}
var buffer = request.response;
var response = {
url: url,
buffer: buffer
};
// emit 'fetch-success' event
_this2.emit('fetch-success', {
file: url,
time: new Date(),
totalLoaded: event.total
});
resolve(response);
} else {
reject(request.statusText);
}
};
request.onerror = function () {
// emit 'fetch-error' event
_this2.emit('fetch-error', {
file: url,
time: new Date()
});
reject(request.statusText);
};
request.onabort = function (event) {
// emit 'fetch-start' event
_this2.emit('fetch-abort', {
file: url,
time: new Date()
});
reject(request.statusText);
};
request.ontimeout = function () {
// emit 'fetch-timeout' event
_this2.emit('fetch-timeout', {
file: url,
time: new Date()
});
reject(request.statusText);
};
request.onprogress = function (event) {
_this2._loaded = event.loaded;
_this2._totalLoaded = event.total;
// emit 'fetch-progress' event
_this2.emit('fetch-progress', {
file: url,
total: event.total,
loaded: event.loaded,
time: new Date()
});
// will be removed after eventer set up
if (_this2._progressBar) {
_this2._progressBar.update(_this2._loaded, _this2._totalLoaded, 'load');
}
};
request.onloadend = function (event) {
// emit 'fetch-end' event
_this2.emit('fetch-end', {
file: url,
time: new Date()
});
// just use onload when success and onerror when failure, etc onabort
// reject(request.statusText);
};
request.send();
});
}
/**
* parse the data loaded
* SHOULD BE implementd by detail loader.
* @param {object} response - loaded data.
* @return {promise} promise.
*/
}, {
key: 'parse',
value: function parse(response) {
return new Promise(function (resolve, reject) {
resolve(response);
});
}
/**
* default load sequence group promise.
* @param {array} url - resource url.
* @return {promise} promise.
*/
}, {
key: 'loadSequenceGroup',
value: function loadSequenceGroup(url) {
var _this3 = this;
var fetchSequence = [];
url.forEach(function (file) {
fetchSequence.push(_this3.fetch(file));
});
return Promise.all(fetchSequence).then(function (rawdata) {
return _this3.parse(rawdata);
}).then(function (data) {
_this3._data.push(data);
return data;
}).catch(function (error) {
window.console.log('oops... something went wrong...');
window.console.log(error);
});
}
/**
* default load sequence promise.
* @param {string} url - resource url.
* @return {promise} promise.
*/
}, {
key: 'loadSequence',
value: function loadSequence(url) {
var _this4 = this;
return this.fetch(url).then(function (rawdata) {
return _this4.parse(rawdata);
}).then(function (data) {
_this4._data.push(data);
return data;
}).catch(function (error) {
window.console.log('oops... something went wrong...');
window.console.log(error);
});
}
/**
* load the data by url(urls)
* @param {string|array} url - resource url.
* @return {promise} promise
*/
}, {
key: 'load',
value: function load(url) {
var _this5 = this;
// if we load a single file, convert it to an array
if (!Array.isArray(url)) {
url = [url];
}
// emit 'load-start' event
this.emit('load-start', {
files: url,
time: new Date()
});
var loadSequences = [];
url.forEach(function (file) {
if (!Array.isArray(file)) {
loadSequences.push(_this5.loadSequence(file));
} else {
loadSequences.push(_this5.loadSequenceGroup(file));
}
});
return Promise.all(loadSequences);
}
/**
* Set data
* @param {array} data
*/
}, {
key: 'data',
set: function set(data) {
this._data = data;
}
/**
* Get data
* @return {array} data loaded
*/
,
get: function get() {
return this._data;
}
}]);
return LoadersBase;
}(_events2.default);
exports.default = LoadersBase;
module.exports = exports['default'];