T/U area Fork

  • /*
     * @title T/U area
     * @description show textarea for copy title/url
     * @include http://*
     * @include https://*
     * @contributor a-kuma3 http://let.hatelabo.jp/a-kuma3/let/hJme4N-s77x7
     * @license MIT License https://opensource.org/licenses/MIT
     * @javascript_url
     */
    
    (() => {
        "use strict";
    
        const append_element = (paren, tag, attr) => {
            return paren.appendChild(Object.assign(document.createElement(tag), attr));
        };
    
        const LET_ID = "let-" + Date.now();
    
        // `id` is possibility of overwritten by Extension or else
        // e.g. It's All Text!
        //      <textarea id="itsalltext_generated_id__1">
        const container = append_element(document.body, "div", {
            className: LET_ID,
        });
    
        const remove_let = () => {
            container.parentNode.removeChild(container);
    
            const style = document.querySelector(`style[data-let-id="${LET_ID}"]`);
            if (!style) return;
    
            style.parentNode.removeChild(style);
        };
    
        // http://let.hatelabo.jp/noromanba/let/hJme3Pyylqos
        // https://gist.github.com/noromanba/d730ccf3ae5e6916cd60
        const canonical = (document.querySelector([
                "head meta[property='og:url'][content]"
            ]) || {}).content ||
            (document.querySelector([
                "head link[rel='canonical'][href]"
            ]) || {}).href ||
            location.href;
    
        const area = append_element(container, "textarea", {
            className: "page-meta",
            value: document.title + "\n" + canonical,
            cols: 100,
            rows: 5,
            // Chrome/mium can not use onkeypress w/ Esc key, use onkeydown/onkeyup
            onkeyup(evt) {
                const ESC = 27;
                if (evt.keyCode === ESC) {
                    remove_let();
                }
            },
            readOnly: true,
        });
    
        // TODO plain link for keyboard a11y
        append_element(container, "div", {
            className: "btn close",
            innerHTML: "&#x274c;",
            title: "Close",
            onclick() { remove_let(); },
            tabIndex: 0,
        });
    
        // TODO plain img-link for keyboard a11y
        append_element(container, "div", {
            className: "btn bookmark",
            innerHTML: "<img src='https://b.st-hatena.com/images/entry-button/button-only.gif'>",
            alt: "Hatena Bookmark",
            title: "Hatena Bookmark",
            onclick() {
                location.href = "http://b.hatena.ne.jp/entry/" + canonical;
            },
            tabIndex: 0,
        });
    
        const STYLE_PREFIX = "." + LET_ID;
        append_element(document.head || document.body, "style", {
            // BUG  Template Literals Workaround for JavaScript::Squish
            //      malfunction multi selector into a Template Literals,
            //      due to Hatena::Let packer was remove spaces at around punctuations
            //
            //      thx id:unarist
            //      JavaScript::Squish SYNOPSIS c.f.
            //      http://unarist.hatenablog.com/entry/2017/04/04/151131
            //          !%&()*+,-/:;<=>?[]\{|}~
            //      http://h.hatena.ne.jp/unarist/83469576782921676
            //      http://let.hatelabo.jp/unarist/let/hLHW5K6CvOAv
            //
            //      i.e.
            //      `.klass div {} .klass pre {}` -> `.klass div{}.klass pre{}`
            //      `${EXP} div {} ${EXP} .clazz {}` -> `${EXP}div{}${EXP}.clazz{}`
            //
            //      Hatena::Let using JavaScript::Squish c.f.
            //      http://secondlife.hatenablog.jp/entry/20100515/1273919432
            //      http://search.cpan.org/dist/JavaScript-Squish/
            //
            // TBD replace `''` c.f.
            // http://let.hatelabo.jp/unarist/let/hJme5PqDlpFI
            textContent: [
                STYLE_PREFIX + " {",
                    "display: inline-block;",
                    "position: fixed;",
                    "top: 0;",
                    "left: 0;",
                    "background-color: white;",
                    "border: 1px inset gray;",
                    "z-index: " + Number.MAX_SAFE_INTEGER || Number.MAX_VALUE + ";",
                "}",
                STYLE_PREFIX + " textarea {",
                "    height: 5em !important;",
                "    vertical-align: top;",
                "    font-family: monospace;",
                "    font-size: 10pt;",
                "    height: 5em;",
                "    width: auto;",
                "    margin: 0;",
                "}",
                STYLE_PREFIX + " textarea::-moz-selection {",
                "    background-color: #5dacf2;",
                "    color: #444;",
                "}",
                STYLE_PREFIX + " .btn {",
                "    display: inline-block;",
                "    position: absolute;",
                "    right: 0;",
                "    color: white;",
                "    width: 1.5em;",
                "    height: 1.5em;",
                "    border: 2px silver solid;",
                "    cursor: pointer;",
                "    text-align: center;",
                "    font-family: monospace;",
                "    font-size: 10pt;",
                "}",
                STYLE_PREFIX + " .close {",
                "    background-color: darkred;",
                "    vertical-align: top;",
                "}",
                STYLE_PREFIX + " .bookmark {",
                "    top: 1.5em;",
                "    padding: 0;",
                "}",
                STYLE_PREFIX + " .bookmark img {",
                "    width: 1.5em;",
                "    height: 1.5em;",
                "}",
            ].join("\n"),
        }).setAttribute("data-let-id", LET_ID);
    
        area.focus();
        area.select();
    })();
    
    // WIP Experimental
    // http://let.hatelabo.jp/noromanba/let/hJme5LS4m4I9
    
    
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