Result
表題の通りで、任意の記事をユーザーにMastodonで投稿して貰う為の共有ボタンを設置する、というもの。
当然問題となるのがユーザーによるインスタンスの違いですが、この方法ではインスタンスをユーザーに入力して貰う形となっています。
JavaScript
// DOMからリンクを取得const button = document.querySelector('.mastodon-share'); // ユーザーがリンクをクリックするとbutton.addEventListener('click', (e) => { // ユーザーがすでにインスタンスに入っており且つ、その情報がlocalStorageにある場合// インスタンスと現在のページのタイトルとURLを含むリンク href を書き出すif(localStorage.getItem('mastodon-instance')) { button.href = ` https://${localStorage.getItem('mastodon-instance')}/ share?text=${encodeURIComponent(document.title)} %0A${encodeURIComponent(location.href)} `;// それ以外の場合はユーザーにインスタンスの入力をして貰いlocalStorageに保存} else { e.preventDefault(); let instance = window.prompt( 'Please tell me your Mastodon instance' ); localStorage.setItem('mastodon-instance', instance);}}); |
これはクリックでインスタンスの指示を促す方法。おそらくもっともシンプルな方法です。
ただ、シェアボタンの挙動としてはちょっとアレなので他SNSと概ね似たようなボタンを今回は作る、という話です。
ボタン化には以下のようなコードが使われています。
Array.prototype.forEach || (Array.prototype.forEach = function (r) { var o, t; if (null == this) throw new TypeError("this is null or not defined"); var n = Object(this), e = n.length >>> 0; if ("function" != typeof r) throw new TypeError(r + " is not a function"); for (arguments.length > 1 && (o = arguments[1]), t = 0; t < e; ) { var i; t in n && ((i = n[t]), r.call(o, i, t, n)), t++; } });document.addEventListener("DOMContentLoaded", function () { document.querySelectorAll(".mast-share").forEach(function (e, t) { (e.querySelector(".mast-check-toggle").id = "mast-check-toggle-" + t), (e.querySelector(".mast-check-label").htmlFor = "mast-check-toggle-" + t), e .querySelector(".mast-share-button") .addEventListener("click", function (t) { var a = new RegExp( "^(?:(?:https?|ftp)://)?(?:\\S+(?::\\S*)?@|\\d{1,3}(?:\\.\\d{1,3}){3}|(?:(?:[a-z\\d\\u00a1-\\uffff]+-?)*[a-z\\d\\u00a1-\\uffff]+)(?:\\.(?:[a-z\\d\\u00a1-\\uffff]+-?)*[a-z\\d\\u00a1-\\uffff]+)*(?:\\.[a-z\\u00a1-\\uffff]{2,6}))(?::\\d+)?(?:[^\\s]*)?$", "i" ), n = e.querySelector('input[name="mast-instance-input"]'); if (a.test(n.value)) { var o = `http://${n.value.replace( /(^\w+:|^)\/\//, "" )}/share?text=${encodeURIComponent(document.title)} ${encodeURIComponent( location.href )}`; window.open( o, "new", "toolbar=no,location=no,status=yes,resizable=yes,scrollbars=yes,height=600,width=400" ); } else n.classList.add("invalid"), setTimeout(function () { n.classList.remove("invalid"); }, 300); }), e.addEventListener("mouseleave", function (t) { e.querySelector(".mast-check-toggle").checked = !1; }); });}); |
css
.mast-check-toggle { height: 0; width: 0; padding: 0; margin: 0; visibility: hidden; display: none;}.mast-check-toggle:checked + .mast-instance { display: block !important;}.mast-check-toggle:not(:checked) + .mast-instance { display: none;}.mast-share.active { padding-bottom: 10px;}.mast-share-lg .mast-top { cursor: pointer; position: absolute; width: 142px; top: 0; left: 0; padding: 4px 8px; z-index: 1;}.mast-share-md .mast-top,.mast-share-sm .mast-top { cursor: pointer; position: absolute; width: 18px; height: 15px; top: 0; left: 0; padding: 4px 8px; z-index: 1;}.mast-share-lg,.mast-share-md,.mast-share-sm { color: #fff; display: inline-block; height: 23px; background-color: #292d37; border-radius: 3px; position: relative;}.mast-share-lg { width: 158px;}.mast-share-md { width: 92px;}.mast-share-sm { width: 34px;}.mast-share-md .mast-instance,.mast-share-sm .mast-instance { border-radius: 0 3px 3px; z-index: 0;}.mast-instance { background-color: #292d37; padding: 8px; position: absolute; top: 20px; left: 0; margin: 0 auto; border-radius: 0 0 3px 3px;}.mast-share span { vertical-align: top; font-family: sans-serif; font-weight: 700; font-size: 14px;}.mast-share img { max-height: 19px; margin-top: 1px;}.mast-instance input[name="mast-instance-input"] { background-color: #00000000; border: none; color: #fff; border-bottom: 2px solid #3087d5; font-size: 14px; font-weight: 700; max-width: 130px;}.mast-instance input[name="mast-instance-input"][class="invalid"] { border-bottom: 2px solid red; animation-name: shake; animation-duration: 0.1s; animation-timing-function: ease-in-out; animation-iteration-count: infinite;}@-webkit-keyframes shake { 41%, 8% { -webkit-transform: translateX(-10px); } 25%, 58% { -webkit-transform: translateX(10px); } 75% { -webkit-transform: translateX(-5px); } 92% { -webkit-transform: translateX(5px); } 0%, 100% { -webkit-transform: translateX(0); }}.mast-share input::placeholder { color: #eee;}.mast-share input:focus { outline: 0;}.mast-share button { background-color: #00000000; color: #fff; border: none; font-size: 14px; font-weight: 700; padding: 0; margin: 8px 0 0; cursor: pointer;}.mast-share button:hover { color: #3087d5;} |
こちらはボタンやインスタンス入力フォームなどのスタイルとなっています。
ですので、ボタンのスタイルを変更したい場合はこのCSSを編集します。
html
<div class="mast-share mast-share-sm"> <input type="checkbox" class="mast-check-toggle"> <div class="mast-instance"><span>インスタンスを入力: </span><input type="textbox" name="mast-instance-input" placeholder="mstdn.jp"><button class="mast-share-button">シェア</button></div> <label class="mast-top mast-check-label"> <img src="data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2261.076954mm%22%20height%3D%2265.47831mm%22%20viewBox%3D%220%200%20216.4144%20232.00976%22%3E%3Cpath%20d%3D%22M211.80734%20139.0875c-3.18125%2016.36625-28.4925%2034.2775-57.5625%2037.74875-15.15875%201.80875-30.08375%203.47125-45.99875%202.74125-26.0275-1.1925-46.565-6.2125-46.565-6.2125%200%202.53375.15625%204.94625.46875%207.2025%203.38375%2025.68625%2025.47%2027.225%2046.39125%2027.9425%2021.11625.7225%2039.91875-5.20625%2039.91875-5.20625l.8675%2019.09s-14.77%207.93125-41.08125%209.39c-14.50875.7975-32.52375-.365-53.50625-5.91875C9.23234%20213.82%201.40609%20165.31125.20859%20116.09125c-.365-14.61375-.14-28.39375-.14-39.91875%200-50.33%2032.97625-65.0825%2032.97625-65.0825C49.67234%203.45375%2078.20359.2425%20107.86484%200h.72875c29.66125.2425%2058.21125%203.45375%2074.8375%2011.09%200%200%2032.975%2014.7525%2032.975%2065.0825%200%200%20.41375%2037.13375-4.59875%2062.915%22%20fill%3D%22%233088d4%22%2F%3E%3Cpath%20d%3D%22M177.50984%2080.077v60.94125h-24.14375v-59.15c0-12.46875-5.24625-18.7975-15.74-18.7975-11.6025%200-17.4175%207.5075-17.4175%2022.3525v32.37625H96.20734V85.42325c0-14.845-5.81625-22.3525-17.41875-22.3525-10.49375%200-15.74%206.32875-15.74%2018.7975v59.15H38.90484V80.077c0-12.455%203.17125-22.3525%209.54125-29.675%206.56875-7.3225%2015.17125-11.07625%2025.85-11.07625%2012.355%200%2021.71125%204.74875%2027.8975%2014.2475l6.01375%2010.08125%206.015-10.08125c6.185-9.49875%2015.54125-14.2475%2027.8975-14.2475%2010.6775%200%2019.28%203.75375%2025.85%2011.07625%206.36875%207.3225%209.54%2017.22%209.54%2029.675%22%20fill%3D%22%23fff%22%2F%3E%3C%2Fsvg%3E%0A"> </label> </div> <script>Array.prototype.forEach||(Array.prototype.forEach=function(r){var o,t;if(null==this)throw new TypeError("this is null or not defined");var n=Object(this),e=n.length>>>0;if("function"!=typeof r)throw new TypeError(r+" is not a function");for(arguments.length>1&&(o=arguments[1]),t=0;t<e;){var i;t in n&&(i=n[t],r.call(o,i,t,n)),t++}});document.addEventListener("DOMContentLoaded",function(){document.querySelectorAll(".mast-share").forEach(function(e,t){e.querySelector(".mast-check-toggle").id="mast-check-toggle-"+t,e.querySelector(".mast-check-label").htmlFor="mast-check-toggle-"+t,e.querySelector(".mast-share-button").addEventListener("click",function(t){var a=new RegExp("^(?:(?:https?|ftp)://)?(?:\\S+(?::\\S*)?@|\\d{1,3}(?:\\.\\d{1,3}){3}|(?:(?:[a-z\\d\\u00a1-\\uffff]+-?)*[a-z\\d\\u00a1-\\uffff]+)(?:\\.(?:[a-z\\d\\u00a1-\\uffff]+-?)*[a-z\\d\\u00a1-\\uffff]+)*(?:\\.[a-z\\u00a1-\\uffff]{2,6}))(?::\\d+)?(?:[^\\s]*)?$","i"),n=e.querySelector('input[name="mast-instance-input"]');if(a.test(n.value)){var o=`http://${n.value.replace(/(^\w+:|^)\/\//,"")}/share?text=${encodeURIComponent(document.title)} ${encodeURIComponent(location.href)}`;window.open(o,"new","toolbar=no,location=no,status=yes,resizable=yes,scrollbars=yes,height=600,width=400")}else n.classList.add("invalid"),setTimeout(function(){n.classList.remove("invalid")},300)}),e.addEventListener("mouseleave",function(t){e.querySelector(".mast-check-toggle").checked=!1})})});</script> <style>.mast-check-toggle{height:0;width:0;padding:0;margin:0;visibility:hidden;display:none}.mast-check-toggle:checked+.mast-instance{display:block!important}.mast-check-toggle:not(:checked)+.mast-instance{display:none}.mast-share.active{padding-bottom:10px}.mast-share-lg .mast-top{cursor:pointer;position:absolute;width:142px;top:0;left:0;padding:4px 8px;z-index:1}.mast-share-md .mast-top,.mast-share-sm .mast-top{cursor:pointer;position:absolute;width:18px;height:15px;top:0;left:0;padding:4px 8px;z-index:1}.mast-share-lg,.mast-share-md,.mast-share-sm{color:#fff;display:inline-block;height:23px;background-color:#292D37;border-radius:3px;position:relative}.mast-share-lg{width:158px}.mast-share-md{width:92px}.mast-share-sm{width:34px}.mast-share-md .mast-instance,.mast-share-sm .mast-instance{border-radius:0 3px 3px;z-index:0}.mast-instance{background-color:#292D37;padding:8px;position:absolute;top:20px;left:0;margin:0 auto;border-radius:0 0 3px 3px}.mast-share span{vertical-align:top;font-family:sans-serif;font-weight:700;font-size:14px}.mast-share img{max-height:19px;margin-top:1px}.mast-instance input[name="mast-instance-input"]{background-color:#00000000;border:none;color:#fff;border-bottom:2px solid #3087D5;font-size:14px;font-weight:700;max-width:130px}.mast-instance input[name="mast-instance-input"][class="invalid"]{border-bottom:2px solid red;animation-name:shake;animation-duration:.1s;animation-timing-function:ease-in-out;animation-iteration-count:infinite}@-webkit-keyframes shake{41%,8%{-webkit-transform:translateX(-10px)}25%,58%{-webkit-transform:translateX(10px)}75%{-webkit-transform:translateX(-5px)}92%{-webkit-transform:translateX(5px)}0%,100%{-webkit-transform:translateX(0)}}.mast-share input::placeholder{color:#eee;}.mast-share input:focus{outline:0}.mast-share button{background-color:#00000000;color:#fff;border:none;font-size:14px;font-weight:700;padding:0;margin:8px 0 0;cursor:pointer}.mast-share button:hover{color:#3087d5}</style> |
HTMLの他に先ほどのJavaScript、CSSを含めたコードです。
このコードのコピーで、「Mastodonで記事をシェア」ボタンを設置する事が出来ます。
JavaScript及びCSSはCDNにもあるみたいなので以下のようにコードを短くする事も可能です。
<div class="mast-share mast-share-sm"> <input type="checkbox" class="mast-check-toggle"> <div class="mast-instance"><span>インスタンスを入力: </span><input type="textbox" name="mast-instance-input" placeholder="mstdn.jp"><button class="mast-share-button">シェア</button></div> <label class="mast-top mast-check-label"> <img src="logotype-short.svg"> </label> </div> <script src="https://cdn.rawgit.com/grayleonard/mastodon-share/35d4e3ab/mast-share.min.js"></script> <link rel="stylesheet" href="https://cdn.rawgit.com/grayleonard/mastodon-share/35d4e3ab/mast-share.min.css"> |
via
以下で詳しく解説されています。
Adding a “share to mastodon” link to any web site – and here
またコードはGithubで公開されています。
