126 lines
4.2 KiB
JavaScript
126 lines
4.2 KiB
JavaScript
var mediaPlatform = {};
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mediaPlatform.getMPHeight = function() {
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var height = document.getElementById('js_article').scrollHeight;
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return height;
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};
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mediaPlatform.getMPInfo = function() {
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var title;
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if (msg_title) {
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title = msg_title;
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}
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else {
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title = document.getElementsByTagName('h1')[0].innerHTML.toString();
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}
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var thumbUrl;
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if (msg_cdn_url) {
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thumbUrl = msg_cdn_url;
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}
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else {
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thumbUrl = document.getElementsByTagName('img')[0].src.toString();
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}
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var account;
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if (nickname) {
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account = nickname;
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}
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if (!title) {title = "";}
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if (!thumbUrl) {thumbUrl= "";}
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if (!account) {account = "";}
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var info = {
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"title": title,
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"thumbUrl": thumbUrl,
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"account": account,
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}
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return info;
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};
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mediaPlatform.getMPInfoStr = function() {
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return JSON.stringify(mediaPlatform.getMPInfo());
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};
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// 这里的做法是为了非独立图片（下方有内容）可以保持跟内容12px的距离
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mediaPlatform.handleImageBlank = function() {
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var imgs = document.getElementsByTagName('img');
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for (var i = 0; i < imgs.length; i++) {
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var nextNode = imgs[i].nextSibling;
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var preNode = imgs[i].previousSibling;
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// 只处理上方有空行的情况，下方有空行经常会跟图片的说明文字连用，尝试修改会导致样式错乱
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if (preNode && preNode.nodeName.toLowerCase() == 'br') {
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// 处理图片上面有个br，但是br不能自定义高度，所以直接去掉重新加margin
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if (preNode.style) {
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preNode.style.display = "none";
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}
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imgs[i].style.marginTop = '12px';
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} else if (preNode && preNode.nodeType == 3 && !this.emptyTextNode(preNode)) {
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// 处理图片跟上面文字在同一个p里面，但是没有br隔开
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imgs[i].style.marginTop = '12px';
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}
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}
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};
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mediaPlatform.emptyTextNode = function(el) {
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return !el.data || /^(\s|\t)+$/g.test(el.data)
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}
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// 干掉p>br的情况的margin-top
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mediaPlatform.updateBlankHeight = function() {
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var blanks = document.getElementsByTagName('br');
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for (var i = blanks.length - 1; i >= 0; i--) {
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var parentNode = blanks[i].parentNode;
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if (parentNode.nodeName.toLowerCase() == "p" && parentNode.childNodes.length == 1) {
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parentNode.style.height = '20px';
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parentNode.style.minHeight = '0em';
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}
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}
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};
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// 观察到部分公众号文章首评的懒加载图片无法正常显示，这是由于 scroll 事件没有触发导致的（怀疑是在 rangy-classapplier 引入后产生了混合反应，但在 Android 上确是好的）。这里的解决办法是手动触发一次 scroll 事件，但由于我们的 webview 其实是完整高度的，本身并不能滚动，所以这样做也不会产生抖动或者其他副作用。
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mediaPlatform.protectLazyLoad = function() {
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window.scrollTo(0, 1);
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};
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mediaPlatform.init = function() {
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mediaPlatform.updateBlankHeight();
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mediaPlatform.handleImageBlank();
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mediaPlatform.protectLazyLoad();
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};
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mediaPlatform.getAuthor = function() {
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var find = false;
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var author = document.getElementById('js_name');
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if (author != null) {
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console.log('mediaPlatform.getAuthor ' + author.innerText)
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author.addEventListener('click',function(){
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wereadBridge.handleWithRichEditor("onClickAuthor",{"param" : author.innerText, "cmd": "onClickAuthor"}, "", "");
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}, false)
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}
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}
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mediaPlatform.init();
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// 用于在退出公众号文章的时候暂停视频播放
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// 由于腾讯视频是通过 iFrame 内嵌的，没有办法直接操作，我们用刷新 iFrame 的方式实现停止播放的效果
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function pauseMedia() {
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pauseCurrentAudio();
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pauseCurrentVideo();
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}
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function pauseCurrentAudio() {
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var audios = document.querySelectorAll('audio');
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for (var i = 0; i < audios.length; i++) {
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var audio = audios[i];
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audio.pause();
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}
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}
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function pauseCurrentVideo() {
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var iframes = document.querySelectorAll('iframe');
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for (var i = 0; i < iframes.length; i++) {
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var oldFrame = iframes[i];
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oldFrame.src = oldFrame.src;
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}
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}
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