Readability/readability/data/Call.js

/* ============================================================
* Readability - plugin for Falkon
* Copyright (C) 2016  Jaroslav Bambas <jar.bambas@gmail.com>
* Copyright (C) 2019-2022  Juraj Oravec <jurajoravec@mailo.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program.  If not, see <http://www.gnu.org/licenses/>.
* ============================================================ */

{readability.js}

{toolbar.js}

function callReadability(){
    var article = new Readability(document).parse();
    renderPage(article);
}

function readabilityHead(article){
    var head = document.createElement('head');
    document.documentElement.appendChild(head);

    var title = document.createElement('title');
    title.innerHTML = article.title;
    head.appendChild(title);

    var css = document.createElement('style');
    css.innerHTML = '{style.css}';
    head.appendChild(css);

    var meta  = document.createElement('meta');
    meta.content = "text/html; charset=UTF-8";
    meta.httpEquiv = 'content-type';
    head.appendChild(meta);
    meta = document.createElement('meta');
    meta.name = 'viewport';
    meta.content = 'width=device-width, user-scalable=0';
    head.appendChild(meta);
}

function readablilityBody(article){
    var body = document.createElement('body');
    body.className = 'loaded sans-serif sepia';
    document.documentElement.appendChild(body);

    var container = document.createElement('div');
    container.className = 'container font-size5';
    container.id = 'container';
    body.appendChild(container);

    var header = document.createElement('div');
    header.className = 'header';
    header.id = 'reader-header';
    header.style.display = 'block';
    container.appendChild(header);

    var domain = document.createElement('a');
    domain.id = 'reader-domain';
    domain.className = 'domain';
    domain.href = document.location.href;
    domain.innerHTML = document.location.host;
    header.appendChild(domain);

    var h1 = document.createElement('h1');
    h1.id = 'reader-title';
    h1.innerHTML = article.title;
    header.appendChild(h1);

    var credit = document.createElement('div');
    credit.id = 'reader-credits';
    credit.className = 'credits';
    credit.innerHTML = article.byline;
    header.appendChild(credit);

    var content = document.createElement('div');
    content.className = 'content';
    container.appendChild(content);

    var reader_content = document.createElement('div');
    reader_content.id = 'moz-reader-content';
    reader_content.style.display = 'block';
    reader_content.innerHTML = article.content;
    content.appendChild(reader_content);
}

function renderPage(article){
    var element = document.documentElement;
    if(element && !!article && !!article.content){
        element.removeChild(document.body);
        element.removeChild(document.head);

        readabilityHead(article);
        readablilityBody(article);

        readablilityToolbar();
    } else {
        alert("No content to transform.");
    }
}

function initConfig(colorTheme, font, fontSize){
    switch(colorTheme) {
        case "light":
            switchToLight();
            break;
        case "dark":
            switchToDark();
            break;
        case "sepia":
        default:
            switchToSepia();
    }
    switch(font){
        case "serif":
            switchToSerif();
            break;
        case "sans-serif":
        default:
            switchToSansSerif();
    }

    fontSizeSet(fontSize);
}

function init() {
    external.extra.readability.init.connect(function(theme, font, fontSize) {
        if (!document.hidden) {
            callReadability();
            initConfig(theme, font, fontSize)
        }
    })
}

if (window._falkon_external) {
    init();
} else {
    document.addEventListener("_falkon_external_created", init);
}