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108 lines
2.8 KiB
JavaScript
108 lines
2.8 KiB
JavaScript
/*global ol*/
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if (window.ol && !ol.ext) {
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ol.ext = {};
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}
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/** IFrame API create an api and wait the target ready
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* @constructor
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* @param {string} targetOrigin, default '*'
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*/
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ol.ext.IFrameAPI = function(targetOrigin) {
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this.targetOrigin = targetOrigin || '*';
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this.id = -1;
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this.properties = {};
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// Setter api
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this.setter = {};
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// Listener api
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this.listener = {};
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// Nothing to do there
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if (window.parent === window) return;
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// Wait for target ready
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window.addEventListener('message', function(e) {
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if (e.data.listener) {
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if (this.listener[e.data.listener]) {
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this.listener[e.data.listener].call(e.data.data);
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}
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} else {
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switch (e.data.api) {
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case 'ready': {
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this.ready = true;
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this.id = e.data.id;
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window.parent.postMessage(e.data, this.targetOrigin);
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break;
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}
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case 'getAPI': {
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e.data.data = Object.keys(this.setter);
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e.data.id = this.id;
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window.parent.postMessage(e.data, this.targetOrigin);
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break;
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}
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default: {
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if (this.setter[e.data.api]) {
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var data = this.setter[e.data.api].call(this, e.data.data);
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if (data !== undefined) {
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e.data.data = data;
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e.data.id = this.id;
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window.parent.postMessage(e.data, this.targetOrigin);
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}
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}
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break;
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}
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}
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}
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}.bind(this), false);
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// ready
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window.parent.postMessage({
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api: 'ready'
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}, this.targetOrigin);
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}
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/** Add properties
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* @param {string} key
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* @param {*} value
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*/
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ol.ext.IFrameAPI.prototype.set = function(key, value) {
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this.properties[key] = value;
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};
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/** Get properties
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* @param {string} key
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* @return {*}
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*/
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ol.ext.IFrameAPI.prototype.get = function(key) {
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return this.properties[key];
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};
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/**
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* @typedef {Object} TemplateAPI
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* @property {string} name api name
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* @property {function} function if return a Transferable it will be send to the iFrame
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*/
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/** Add functions to the API
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* @param {Array<TemplateAPI>} list of functions to add to the api
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*/
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ol.ext.IFrameAPI.prototype.setAPI = function(api) {
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if (/\bready\b|\bgetAPI\b|\bon\b|\bun\b|\baddInput\b/.test(api)) {
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console.error('Bad API key: '+api);
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} else {
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for (var k in api) {
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this.setter[k] = api[k];
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window.parent.postMessage({
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api: 'getAPI',
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id: this.id,
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data: [k]
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}, this.targetOrigin);
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}
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}
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};
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/** Post a message to the iframe
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* @param {string} name api name
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* @param {Transferable } data object to transfer to the iframe
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*/
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ol.ext.IFrameAPI.prototype.postMessage = function(name, data) {
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window.parent.postMessage({
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api: name,
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id: this.id,
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data: data
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}, this.targetOrigin);
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};
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ol.ext.IFrameAPI.prototype.addListener = function(name, listener) {
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this.listener[name] = listener;
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};
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