play-resources.js & Play button
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function addButton(container, res) {
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var button = $('<a class="play">▶ Play</a>');
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button.click(function() {
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button.remove();
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addPlayer(container, res);
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});
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container.append(button);
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}
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function addPlayer(container, res) {
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var types = res.map(function(res) {
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return res.type;
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});
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/* Can we have <audio> or <video> please?
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*
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* Video must be prefered over audio because <audio> can play
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* videos too.
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*/
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var html5player;
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if (types.some(canPlayVideo)) {
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html5player = $('<video controls="controls" autoplay="autoplay"></video>');
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} else if (types.some(canPlayAudio)) {
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html5player = $('<audio controls="controls" autoplay="autoplay"></audio>');
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}
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/* ...install sources */
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if (html5player) {
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res.forEach(function(r) {
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var src = $('<source/>');
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src.attr('src', r.href);
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src.attr('type', r.type);
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html5player.append(src);
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});
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}
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/* Anything else than HTML5? */
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var fallback;
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res.forEach(function(r) {
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if (fallback) /* Got one already */
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return;
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if (r.type === 'audio/mpeg') {
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var movie = '/script/dewplayer-mini.swf?showtime=1&autostart=1&mp3=' + r.href;
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fallback = $('<object type="application/x-shockwave-flash" width="150" height="20">' +
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'<param name="wmode" value="transparent"/>' +
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'<param name="allowScriptAccess" value="always"/>' +
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'<param name="movie"/>' +
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'</object>');
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fallback.attr('data', movie);
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fallback.find('param[name="movie"]').attr('value', movie);
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}
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});
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/* Add stuff to page */
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if (html5player) {
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if (fallback)
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html5player.append(fallback);
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container.append(html5player);
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} else if (fallback) {
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container.append(fallback);
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} else {
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container.append('<p>Upps, das musst du wohl erstmal herunterladen</p>');
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}
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}
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$(document).ready(function() {
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/* Iterate over all resources in HTML output */
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$('.resource').each(function() {
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var resource = { href: $(this).find('a').attr('href'),
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type: $(this).find('a').attr('type') };
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/* Get all associated alternatives */
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var alternativeEls = $(this).nextUntil('.resource');
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var alternatives = alternativeEls.find('a').
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map(function() {
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return { href: $(this).attr('href'),
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type: $(this).attr('type') };
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}).
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toArray();
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var res = [resource].concat(alternatives);
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/* Check playability */
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if (res.map(function(res) {
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return res.type;
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}).some(canPlay)) {
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var liEl = $('<li></li>');
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alternativeEls.last().after(liEl);
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var player = addButton(liEl, res);
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}
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});
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});
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function canPlay(type) {
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return canPlayAudio(type) ||
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canPlayVideo(type) ||
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canFallback(type);
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}
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/**
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* From http://diveintohtml5.org/everything.html
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*/
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function canPlayAudio(type) {
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var a = document.createElement('audio');
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return !!(a.canPlayType &&
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a.canPlayType(type).replace(/no/, ''));
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}
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/**
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* Partially from http://diveintohtml5.org/everything.html
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*
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* But we don't want audio/* as <video>
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*/
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function canPlayVideo(type) {
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var v = document.createElement('video');
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return !!(v.canPlayType &&
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v.canPlayType(type).replace(/no/, '') &&
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!(/^audio\//.test(type)));
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}
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function canFallback(type) {
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return type === 'audio/mpeg';
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}
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@ -765,3 +765,8 @@ a.flattr:hover {
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text-decoration: none;
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border-bottom: none;
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}
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.play {
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cursor: pointer;
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font-weight: bold;
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}
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@ -54,6 +54,11 @@
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<xsl:text>
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</xsl:text>
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</script>
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<script src="{$baseurl}script/play-resources.js"
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type="text/javascript" defer="defer">
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<xsl:text>
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</xsl:text>
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</script>
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</xsl:template>
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@ -374,8 +374,6 @@
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<xsl:call-template name="resource-item"/>
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<xsl:apply-templates select="alternative" mode="resources-in-news"/>
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<xsl:call-template name="insert-player"/>
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</xsl:template>
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<xsl:template match="resource/alternative" mode="resources-in-news">
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@ -392,7 +390,8 @@
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</xsl:call-template>
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</xsl:variable>
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<li>
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<!-- @class = "resource" | "alternative" -->
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<li class="{name(.)}">
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<!-- MIME-Type ist nützlich z.B. für ftp:// URLs -->
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<a href="{$href}" type="{@type}" class="mime" rel="enclosure">
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<xsl:choose>
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@ -409,29 +408,4 @@
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</li>
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</xsl:template>
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<xsl:template name="insert-player">
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<xsl:if test="@type='audio/mpeg' or @type='application/ogg' or
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count(resource[@type='audio/mpeg' or @type='application/ogg']) > 0">
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<li>
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<audio preload="none" controls="controls">
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<source src="{@url}" type="{@type}"/>
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<xsl:for-each select="alternative">
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<source src="{@url}" type="{@type}"/>
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</xsl:for-each>
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</audio>
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</li>
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</xsl:if>
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<xsl:if test="@type='video/webm' or @type='video/ogg' or @type='video/mp4' or
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count(resource[@type='video/webm' or @type='video/ogg' or @type='video/mp4']) > 0">
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<li>
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<video preload="none" controls="controls">
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<source src="{@url}" type="{@type}"/>
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<xsl:for-each select="alternative">
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<source src="{@url}" type="{@type}"/>
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</xsl:for-each>
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</video>
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</li>
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</xsl:if>
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</xsl:template>
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</xsl:stylesheet>
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