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61 lines
2.1 KiB
61 lines
2.1 KiB
/**
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* Copyright 2013 vtt.js Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// If we're in Node.js then require VTTCue so we can extend it, otherwise assume
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// VTTCue is on the global.
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if (typeof module !== "undefined" && module.exports) {
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this.VTTCue = this.VTTCue || require("./vttcue").VTTCue;
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}
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// Extend VTTCue with methods to convert to JSON, from JSON, and construct a
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// VTTCue from an options object. The primary purpose of this is for use in the
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// vtt.js test suite (for testing only properties that we care about). It's also
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// useful if you need to work with VTTCues in JSON format.
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(function(root) {
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root.VTTCue.prototype.toJSON = function() {
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var cue = {},
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self = this;
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// Filter out getCueAsHTML as it's a function and hasBeenReset and displayState as
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// they're only used when running the processing model algorithm.
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Object.keys(this).forEach(function(key) {
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if (key !== "getCueAsHTML" && key !== "hasBeenReset" && key !== "displayState") {
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cue[key] = self[key];
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}
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});
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return cue;
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};
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root.VTTCue.create = function(options) {
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if (!options.hasOwnProperty("startTime") || !options.hasOwnProperty("endTime") ||
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!options.hasOwnProperty("text")) {
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throw new Error("You must at least have start time, end time, and text.");
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}
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var cue = new root.VTTCue(options.startTime, options.endTime, options.text);
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for (var key in options) {
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if (cue.hasOwnProperty(key)) {
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cue[key] = options[key];
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}
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}
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return cue;
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};
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root.VTTCue.fromJSON = function(json) {
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return this.create(JSON.parse(json));
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};
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}(this));
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