diff options
| -rw-r--r-- | script.js | 227 | ||||
| -rw-r--r-- | templates/page.tmpl | 2 |
2 files changed, 228 insertions, 1 deletions
diff --git a/script.js b/script.js new file mode 100644 index 00000000..428adf3a --- /dev/null +++ b/script.js @@ -0,0 +1,227 @@ +// @license magnet:?xt=urn:btih:0b31508aeb0634b347b8270c7bee4d411b5d4109&dn=agpl-3.0.txt AGPL-3.0-or-later + /* + + SeekToTime - simple script to add video time jump functionality to timestamp links + Copyright (C) 2020 Grant Shangreaux + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as + published by the Free Software Foundation, either version 3 of the + License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. + + This script enables wiki editors to create anchor tags with the class "time-link" + that will be parsed for seeking to specific time stamps in the main video on a page. + The tag should look like this: + + <a href="#mainVideo" class="time-link">mm:ss</a> + + This could be extended to accept hours in the time stamp as well, but currently does not. + */ + let timestamps; + + // expects a string like "mm:ss.mmm" + function parseSeconds(timeString) { + return timeString.split(":").reduce(function(prev, o) { + return prev * 60 + parseFloat(o); + }, 0); + } + + function handleSubtitleClick(event) { + var video = event.target.getAttribute('data-video'); + var start = event.target.getAttribute('data-start'); + var videoElem = document.getElementById(video); + if (videoElem) { + videoElem.currentTime = parseSeconds(start); + videoElem.scrollIntoView(); + } + if (event.preventDefault) { + event.preventDefault(); + } + } + + window.onload = function initScript() { + let subtitles = document.getElementsByClassName('subtitle'); + for (let i = 0; i < subtitles.length; i++) { + subtitles[i].onclick = handleSubtitleClick; + } + } +// @license-end + // @license magnet:?xt=urn:btih:90dc5c0be029de84e523b9b3922520e79e0e6f08&dn=cc0.txt txt CC0-1.0 + // Copyright (C) 2021, 2022 Sacha Chua + + if (document.querySelector('.times')) { + var dateOptions = {dateStyle: 'short', timeStyle: 'short'}; + var localStart = (new Date(document.querySelector('.times').getAttribute('start'))).toLocaleString([], dateOptions); + var localEnd = (new Date(document.querySelector('.times').getAttribute('end'))).toLocaleString([], dateOptions); + var dateElem = document.createElement('div'); + dateElem.appendChild(document.createTextNode('Your local time: ~ ' + localStart + ' to ~ ' + localEnd)); + document.querySelector('.times').prepend(dateElem); + if (document.querySelector('.times').querySelector('.others')) { + document.querySelector('.times').querySelector('.others').style.display = 'none'; + } + } + if (document.querySelector('.time-overlay')) { + document.querySelectorAll('.time-overlay').forEach(function (o) { + if (o.getAttribute('title')) return; + var dateOptions = {dateStyle: 'short', timeStyle: 'short'}; + var localStart, localEnd; + if (o.getAttribute('start') && o.getAttribute('end')) { + localStart = (new Date(o.getAttribute('start'))).toLocaleString([], dateOptions); + localEnd = (new Date(o.getAttribute('end'))).toLocaleString([], dateOptions); + o.setAttribute('title', 'Your local time: ~ ' + localStart + ' to ~ ' + localEnd); + } else if (o.getAttribute('start')) { + localStart = (new Date(o.getAttribute('start'))).toLocaleString([], dateOptions); + o.setAttribute('title', 'Your local time: ~ ' + localStart); + } + }); + } + + if (document.querySelector('a[name=transcript]')) { + var transcriptLink = document.createElement('a'); + transcriptLink.setAttribute('href', '#transcript'); + transcriptLink.textContent = 'View transcript'; + var video = document.querySelector('.mainVideo video'); + if (video) { + var resources = document.querySelector('.mainVideo video').closest('.vid').querySelector('.resources'); + var transcriptDiv = document.createElement('div'); + transcriptDiv.appendChild(transcriptLink) + if (resources) { resources.prepend(transcriptDiv); } + } + } + var chat = document.querySelector('.chat-iframe'); + if (chat) { + if (chat.getAttribute('data-track')) { + chat.innerHTML = '<iframe src="https://chat.emacsconf.org?join=emacsconf,emacsconf-' + + chat.getAttribute('data-track').replace(/[^A-Za-z]/g, '') + '" height="600" width="100%"></iframe>'; + } else { + chat.innerHTML = '<iframe src="https://chat.emacsconf.org" height="600" width="100%"></iframe>'; + } + } + +// @license-end + // @license magnet:?xt=urn:btih:90dc5c0be029de84e523b9b3922520e79e0e6f08&dn=cc0.txt txt CC0-1.0 + // Copyright (c) 2021 Sacha Chua - CC0 Public Domain + function displayChapters(elem) { + var i; + var chapter; + var list = document.createElement('ol'); + list.setAttribute('class', 'chapters'); + var link; + var target = elem.getAttribute('data-target'); + var video = document.getElementById(target); + var track; + if (video) { + track = video.addTextTrack('chapters'); + track.mode = 'hidden'; + } + var chapters = elem.textContent.split(/[ \t]*\n+[ \t]*/).forEach(function(line) { + var m = (line.match(/^(((?:[0-9]+:)?[0-9]+:[0-9]+)(?:\.[0-9]+))[ \t]+(.*)/)); + if (m) { + var start = m[1]; + var text = m[3]; + chapter = document.createElement('li'); + link = document.createElement('a'); + link.setAttribute('href', '#'); + link.setAttribute('data-video', target); + link.setAttribute('data-start', start); + link.setAttribute('data-start-s', parseSeconds(start)); + link.appendChild(document.createTextNode(m[2] + ' ' + text)); + link.onclick = handleSubtitleClick; + chapter.appendChild(link); + list.appendChild(chapter); + if (track) { + var time = parseSeconds(start); + if (track.cues.length > 0) { + track.cues[track.cues.length - 1].endTime = time - 1; + } + track.addCue(new VTTCue(time, time, text)); + } + } + }) + if (track && track.cues.length > 0) { + video.addEventListener('durationchange', function() { + track.cues[track.cues.length - 1].endTime = video.duration; + }); + track.addEventListener('cuechange', function() { + if (!this.activeCues[0]) return; + if (list.querySelector('.current')) { + list.querySelector('.current').className = ''; + } + var chapter; + if (chapter = list.querySelector('a[data-start-s="' + this.activeCues[0].startTime + '"]')) { + chapter.parentNode.className = 'current'; + } + }); + } + elem.parentNode.replaceChild(list, elem); + } + + document.querySelectorAll('pre.chapters').forEach(displayChapters); + + var video = document.querySelector('video.reload'); + if (video) { + var myVar = setInterval(reloadAsNeeded, 1000); + var oldTime = ''; + function reloadAsNeeded() { + if ((video.paused != true && (video.currentTime - oldTime) == 0 && video.currentTime != 0)) { + var source = video.querySelector('source'); + var oldVideo = source.src; + source.src = ''; + source.src = oldVideo; + video.load(); + video.play(); + } + oldTime = video.currentTime; + }; + } + + /* videoType: mainVideo, qanda */ + function addStickyVideo(videoType) { + const transcriptDiv = document.querySelector('.transcript-' + videoType); + const video = document.querySelector('.vid.' + videoType + ' video'); + if (!video || !transcriptDiv) return; + if (transcriptDiv.querySelector('.vid')) + transcriptDiv.querySelector('.vid').remove(); + // already has it + // TODO: Make a copy of the video and place it at the start of the btranscript div, positioned to the left, and sticky, but only on large screens. + const videoCopy = video.cloneNode(true); + transcriptDiv.prepend(videoCopy); + videoCopy.classList.add('sticky-video'); + // TODO: fix the ID + + } + + + + // @license-end + // @license magnet:?xt=urn:btih:90dc5c0be029de84e523b9b3922520e79e0e6f08&dn=cc0.txt txt CC0-1.0 + // Copyright (c) 2023 Sacha Chua - CC0 Public Domain + function highlightTalks() { + // highlight any talk mentioned in the highlight URL parameter + var params = new URLSearchParams(window.location.search); + if (!params.get('highlight')) return; + var talks = params.get('highlight').split(',').filter(function(o) { return o.match(/^[-a-z0-9]+$/); }); + var regexp = new RegExp('/talks/(' + talks.join('|') + ')/?$'); + document.querySelectorAll('a[href]').forEach(function(link) { + console.debug(link.getAttribute('href'), link.getAttribute('href').match(regexp)); + if (link.getAttribute('href').match(regexp)) { + console.debug(link); + link.classList.add('highlight'); + } + }); + } + + addEventListener('DOMContentLoaded', highlightTalks); + addEventListener('DOMContentLoaded', function() { + addStickyVideo('mainVideo'); + addStickyVideo('qanda'); + }); + // @license-end diff --git a/templates/page.tmpl b/templates/page.tmpl index 4d8a8d86..c196dedf 100644 --- a/templates/page.tmpl +++ b/templates/page.tmpl @@ -421,7 +421,7 @@ Last edited <TMPL_VAR MTIME> if (transcriptDiv.querySelector('.vid')) transcriptDiv.querySelector('.vid').remove(); // already has it - // TODO: Make a copy of the video and place it at the start of the btranscript div, positioned to the left, and sticky, but only on large screens. + // TODO: Make a copy of the video and place it at the start of the transcript div, positioned to the left, and sticky, but only on large screens. const videoCopy = video.cloneNode(true); transcriptDiv.prepend(videoCopy); videoCopy.classList.add('sticky-video'); |