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videojs-markers - v1.0.1 - 2018-04-03\n* Copyright (c) 2018 ; Licensed */\n'use strict';\n\nimport videojs from 'video.js';\n\ntype Marker = {\n time: number,\n duration: number,\n text?: string,\n class?: string,\n overlayText?: string,\n // private property\n key: string,\n};\n\n// default setting\nconst defaultSetting = {\n markerStyle: {\n 'width':'7px',\n 'border-radius': '30%',\n 'background-color': 'red',\n },\n markerTip: {\n display: true,\n text: function(marker) {\n return \"Break: \" + marker.text;\n },\n time: function(marker) {\n return marker.time;\n },\n },\n breakOverlay:{\n display: false,\n displayTime: 3,\n text: function(marker) {\n return \"Break overlay: \" + marker.overlayText;\n },\n style: {\n 'width':'100%',\n 'height': '20%',\n 'background-color': 'rgba(0,0,0,0.7)',\n 'color': 'white',\n 'font-size': '17px',\n },\n },\n onMarkerClick: function(marker) {},\n onMarkerReached: function(marker, index) {},\n markers: [],\n};\n\n// create a non-colliding random number\nfunction generateUUID(): string {\n var d = new Date().getTime();\n var uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {\n var r = (d + Math.random()*16)%16 | 0;\n d = Math.floor(d/16);\n return (c=='x' ? r : (r&0x3|0x8)).toString(16);\n });\n return uuid;\n};\n\n/**\n * Returns the size of an element and its position\n * a default Object with 0 on each of its properties\n * its return in case there's an error\n * @param {Element} element el to get the size and position\n * @return {DOMRect|Object} size and position of an element\n */\nfunction getElementBounding(element) {\n var elementBounding;\n const defaultBoundingRect = {\n top: 0,\n bottom: 0,\n left: 0,\n width: 0,\n height: 0,\n right: 0\n };\n\n try {\n elementBounding = element.getBoundingClientRect();\n } catch (e) {\n elementBounding = defaultBoundingRect;\n }\n\n return elementBounding;\n}\n\nconst NULL_INDEX = -1;\n\nfunction registerVideoJsMarkersPlugin(options) {\n // copied from video.js/src/js/utils/merge-options.js since\n // videojs 4 doens't support it by defualt.\n if (!videojs.mergeOptions) {\n function isPlain(value) {\n return !!value && typeof value === 'object' &&\n toString.call(value) === '[object Object]' &&\n value.constructor === Object;\n }\n function mergeOptions(source1: Object, source2: Object) {\n\n const result = {};\n const sources = [source1, source2];\n sources.forEach(source => {\n if (!source) {\n return;\n }\n Object.keys(source).forEach(key => {\n let value = source[key];\n if (!isPlain(value)) {\n result[key] = value;\n return;\n }\n if (!isPlain(result[key])) {\n result[key] = {};\n }\n result[key] = mergeOptions(result[key], value);\n })\n });\n return result;\n }\n videojs.mergeOptions = mergeOptions;\n }\n\n if (!videojs.dom.createEl) {\n videojs.dom.createEl = function(tagName: string, props: Object, attrs?: Object): void {\n const el = videojs.Player.prototype.dom.createEl(tagName, props);\n if (!!attrs) {\n Object.keys(attrs).forEach(key => {\n el.setAttribute(key, attrs[key]);\n });\n }\n return el;\n }\n }\n \n\n /**\n * register the markers plugin (dependent on jquery)\n */\n let setting = videojs.mergeOptions(defaultSetting, options),\n markersMap: {[key:string]: Marker} = {},\n markersList: Array<Marker> = [], // list of markers sorted by time\n currentMarkerIndex = NULL_INDEX,\n player = this,\n markerTip = null,\n breakOverlay = null,\n overlayIndex = NULL_INDEX;\n\n function sortMarkersList(): void {\n // sort the list by time in asc order\n markersList.sort((a, b) => {\n return setting.markerTip.time(a) - setting.markerTip.time(b);\n });\n }\n\n function addMarkers(newMarkers: Array<Marker>): void {\n newMarkers.forEach((marker: Marker) => {\n marker.key = generateUUID();\n\n player.el().querySelector('.vjs-progress-holder')\n .appendChild(createMarkerDiv(marker));\n\n // store marker in an internal hash map\n markersMap[marker.key] = marker;\n markersList.push(marker);\n })\n\n sortMarkersList();\n }\n\n function getPosition(marker: Marker): number {\n return (setting.markerTip.time(marker) / player.duration()) * 100;\n }\n\n function setMarkderDivStyle(marker: Marker, markerDiv: Object): void {\n markerDiv.className = `vjs-marker ${marker.class || \"\"}`;\n\n Object.keys(setting.markerStyle).forEach(key => {\n markerDiv.style[key] = setting.markerStyle[key];\n });\n\n // hide out-of-bound markers\n const ratio = marker.time / player.duration();\n if (ratio < 0 || ratio > 1) {\n markerDiv.style.display = 'none';\n }\n\n // set position\n markerDiv.style.left = getPosition(marker) + '%';\n if (marker.duration) {\n markerDiv.style.width = (marker.duration / player.duration()) * 100 + '%';\n markerDiv.style.marginLeft = '0px';\n } else {\n const markerDivBounding = getElementBounding(markerDiv);\n markerDiv.style.marginLeft = markerDivBounding.width / 2 + 'px';\n } \n }\n\n function createMarkerDiv(marker: Marker): Object {\n\n var markerDiv = videojs.dom.createEl('div', {}, {\n 'data-marker-key': marker.key,\n 'data-marker-time': setting.markerTip.time(marker)\n });\n\n setMarkderDivStyle(marker, markerDiv);\n\n // bind click event to seek to marker time\n markerDiv.addEventListener('click', function(e) {\n var preventDefault = false;\n if (typeof setting.onMarkerClick === \"function\") {\n // if return false, prevent default behavior\n preventDefault = setting.onMarkerClick(marker) === false;\n }\n\n if (!preventDefault) {\n var key = this.getAttribute('data-marker-key');\n player.currentTime(setting.markerTip.time(markersMap[key]));\n }\n });\n\n if (setting.markerTip.display) {\n registerMarkerTipHandler(markerDiv);\n }\n\n return markerDiv;\n }\n\n function updateMarkers(force: boolean): void {\n // update UI for markers whose time changed\n markersList.forEach((marker: Marker) => {\n var markerDiv = player.el().querySelector(\".vjs-marker[data-marker-key='\" + marker.key +\"']\");\n var markerTime = setting.markerTip.time(marker);\n\n if (force || markerDiv.getAttribute('data-marker-time') !== markerTime) {\n setMarkderDivStyle(marker, markerDiv);\n markerDiv.setAttribute('data-marker-time', markerTime);\n }\n });\n sortMarkersList();\n }\n\n function removeMarkers(indexArray: Array<number>): void {\n // reset overlay\n if (!!breakOverlay){\n overlayIndex = NULL_INDEX;\n breakOverlay.style.visibility = \"hidden\";\n }\n currentMarkerIndex = NULL_INDEX;\n\n let deleteIndexList: Array<number> = [];\n indexArray.forEach((index: number) => {\n let marker = markersList[index];\n if (marker) {\n // delete from memory\n delete markersMap[marker.key];\n deleteIndexList.push(index);\n\n // delete from dom\n let el = player.el().querySelector(\".vjs-marker[data-marker-key='\" + marker.key +\"']\");\n el && el.parentNode.removeChild(el);\n }\n });\n\n // clean up markers array\n deleteIndexList.reverse();\n deleteIndexList.forEach((deleteIndex: number) => {\n markersList.splice(deleteIndex, 1);\n });\n\n // sort again\n sortMarkersList();\n }\n\n // attach hover event handler\n function registerMarkerTipHandler(markerDiv: Object): void {\n markerDiv.addEventListener('mouseover', () => {\n var marker = markersMap[markerDiv.getAttribute('data-marker-key')];\n if (!!markerTip) {\n markerTip.querySelector('.vjs-tip-inner').innerText = setting.markerTip.text(marker);\n // margin-left needs to minus the padding length to align correctly with the marker\n markerTip.style.left = getPosition(marker) + '%';\n var markerTipBounding = getElementBounding(markerTip);\n var markerDivBounding = getElementBounding(markerDiv);\n markerTip.style.marginLeft = \n -parseFloat(markerTipBounding.width / 2) + parseFloat(markerDivBounding.width / 4) + 'px';\n markerTip.style.visibility = 'visible';\n }\n });\n\n markerDiv.addEventListener('mouseout',() => {\n if (!!markerTip) {\n markerTip.style.visibility = \"hidden\";\n }\n });\n }\n\n function initializeMarkerTip(): void {\n markerTip = videojs.dom.createEl('div', {\n className: 'vjs-tip',\n innerHTML: \"<div class='vjs-tip-arrow'></div><div class='vjs-tip-inner'></div>\",\n });\n player.el().querySelector('.vjs-progress-holder').appendChild(markerTip);\n }\n\n // show or hide break overlays\n function updateBreakOverlay(): void {\n if (!setting.breakOverlay.display || currentMarkerIndex < 0) {\n return;\n }\n\n var currentTime = player.currentTime();\n var marker = markersList[currentMarkerIndex];\n var markerTime = setting.markerTip.time(marker);\n\n if (\n currentTime >= markerTime &&\n currentTime <= (markerTime + setting.breakOverlay.displayTime)\n ) {\n if (overlayIndex !== currentMarkerIndex) {\n overlayIndex = currentMarkerIndex;\n if (breakOverlay) {\n breakOverlay.querySelector('.vjs-break-overlay-text').innerHTML = setting.breakOverlay.text(marker);\n }\n }\n\n if (breakOverlay) {\n breakOverlay.style.visibility = \"visible\";\n }\n } else {\n overlayIndex = NULL_INDEX;\n if (breakOverlay) {\n breakOverlay.style.visibility = \"hidden\";\n }\n }\n }\n\n // problem when the next marker is within the overlay display time from the previous marker\n function initializeOverlay(): void {\n breakOverlay = videojs.dom.createEl('div', {\n className: 'vjs-break-overlay',\n innerHTML: \"<div class='vjs-break-overlay-text'></div>\"\n });\n Object.keys(setting.breakOverlay.style).forEach(key => {\n if (breakOverlay) {\n breakOverlay.style[key] = setting.breakOverlay.style[key];\n }\n });\n player.el().appendChild(breakOverlay);\n overlayIndex = NULL_INDEX;\n }\n\n function onTimeUpdate(): void {\n onUpdateMarker();\n updateBreakOverlay();\n options.onTimeUpdateAfterMarkerUpdate && options.onTimeUpdateAfterMarkerUpdate();\n }\n\n function onUpdateMarker() {\n /*\n check marker reached in between markers\n the logic here is that it triggers a new marker reached event only if the player\n enters a new marker range (e.g. from marker 1 to marker 2). Thus, if player is on marker 1 and user clicked on marker 1 again, no new reached event is triggered)\n */\n if (!markersList.length) {\n return;\n }\n\n var getNextMarkerTime = (index: number) => {\n if (index < markersList.length - 1) {\n return setting.markerTip.time(markersList[index + 1]);\n }\n // next marker time of last marker would be end of video time\n return player.duration();\n }\n var currentTime = player.currentTime();\n var newMarkerIndex = NULL_INDEX;\n\n if (currentMarkerIndex !== NULL_INDEX) {\n // check if staying at same marker\n var nextMarkerTime = getNextMarkerTime(currentMarkerIndex);\n if(\n currentTime >= setting.markerTip.time(markersList[currentMarkerIndex]) &&\n currentTime < nextMarkerTime\n ) {\n return;\n }\n\n // check for ending (at the end current time equals player duration)\n if (\n currentMarkerIndex === markersList.length - 1 &&\n currentTime === player.duration()\n ) {\n return;\n }\n }\n\n // check first marker, no marker is selected\n if (currentTime < setting.markerTip.time(markersList[0])) {\n newMarkerIndex = NULL_INDEX;\n } else {\n // look for new index\n for (var i = 0; i < markersList.length; i++) {\n nextMarkerTime = getNextMarkerTime(i);\n if (\n currentTime >= setting.markerTip.time(markersList[i]) &&\n currentTime < nextMarkerTime\n ) {\n newMarkerIndex = i;\n break;\n }\n }\n }\n\n // set new marker index\n if (newMarkerIndex !== currentMarkerIndex) {\n // trigger event if index is not null\n if (newMarkerIndex !== NULL_INDEX && options.onMarkerReached) {\n options.onMarkerReached(markersList[newMarkerIndex], newMarkerIndex);\n }\n currentMarkerIndex = newMarkerIndex;\n }\n }\n\n // setup the whole thing\n function initialize(): void {\n if (setting.markerTip.display) {\n initializeMarkerTip();\n }\n\n // remove existing markers if already initialized\n player.markers.removeAll();\n addMarkers(setting.markers);\n\n if (setting.breakOverlay.display) {\n initializeOverlay();\n }\n onTimeUpdate();\n player.on(\"timeupdate\", onTimeUpdate);\n player.off(\"loadedmetadata\");\n }\n\n // setup the plugin after we loaded video's meta data\n player.on(\"loadedmetadata\", function() {\n initialize();\n });\n\n // exposed plugin API\n player.markers = {\n getMarkers: function(): Array<Marker> {\n return markersList;\n },\n next : function(): void {\n // go to the next marker from current timestamp\n const currentTime = player.currentTime();\n for (var i = 0; i < markersList.length; i++) {\n var markerTime = setting.markerTip.time(markersList[i]);\n if (markerTime > currentTime) {\n player.currentTime(markerTime);\n break;\n }\n }\n },\n prev : function(): void {\n // go to previous marker\n const currentTime = player.currentTime();\n for (var i = markersList.length - 1; i >= 0 ; i--) {\n var markerTime = setting.markerTip.time(markersList[i]);\n // add a threshold\n if (markerTime + 0.5 < currentTime) {\n player.currentTime(markerTime);\n return;\n }\n }\n },\n add : function(newMarkers: Array<Marker>): void {\n // add new markers given an array of index\n addMarkers(newMarkers);\n },\n remove: function(indexArray: Array<number>): void {\n // remove markers given an array of index\n removeMarkers(indexArray);\n },\n removeAll: function(): void {\n var indexArray = [];\n for (var i = 0; i < markersList.length; i++) {\n indexArray.push(i);\n }\n removeMarkers(indexArray);\n },\n // force - force all markers to be updated, regardless of if they have changed or not.\n updateTime: function(force: boolean): void {\n // notify the plugin to update the UI for changes in marker times\n updateMarkers(force);\n },\n reset: function(newMarkers: Array<Marker>): void {\n // remove all the existing markers and add new ones\n player.markers.removeAll();\n addMarkers(newMarkers);\n },\n destroy: function(): void {\n // unregister the plugins and clean up even handlers\n player.markers.removeAll();\n breakOverlay && breakOverlay.remove();\n markerTip && markerTip.remove();\n player.off(\"timeupdate\", updateBreakOverlay);\n delete player.markers;\n },\n };\n}\n\nvideojs.registerPlugin('markers', registerVideoJsMarkersPlugin);\n"]}
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