ivnote-web-clipper

Choose your favorite DOM node and its content will be automatically copied to the clipboard in markdown format
目前为 2016-11-02 提交的版本。查看最新版本。
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// ==UserScript==
// @name         ivnote-web-clipper
// @version      0.7
// @description  Choose your favorite DOM node and its content will be automatically copied to the clipboard in markdown format
// @author       Ivan Jiang
// @match        http://*/*
// @match        https://*/*
// @grant        GM_addStyle
// @require      https://cdn.bootcss.com/to-markdown/3.0.3/to-markdown.min.js
// @namespace http://ivnote.xyz
// ==/UserScript==

/* globals GM_addStyle, toMarkdown */
GM_addStyle(` .ivnote-hover { background: rgba(124, 201, 191, .7); }
.ivnote-web-clipper-icon {
  position: fixed; bottom: 15px; right: 15px;
  height: 50px; width: 50px; border-radius: 50%;
  background: RGBA(124, 201, 191, .6) url('https://github.com/iplus26/ivnote/raw/master/web-clipper/toggle-icon.png') no-repeat center center / 80%;
  opacity: .7; cursor: pointer;
  transition: all .3s ease-in-out;
  z-index: 9999;
}
.ivnote-web-clipper-icon.ivnote-web-clipper-enable {
  opacity: 1; transform: rotate(180deg);
  right: 50px;
}
.ivnote-web-clipper-icon:hover {
  opacity: 1;
  transform: rotate(180deg)
}`);

(function() {
'use strict';

// Utils =========================================================================
var classCache = {};

var _ = {
    hasClass: hasClass,
    addClass: addClass,
    removeClass: removeClass,
};

function hasClass(node, name) {
    if (!name) {
        return false;
    }
    return classRE(name).test(className(node));
}

function addClass(node, name) {
    if (!name) {
        return node;
    }
    if (!('className' in node)) {
        return;
    }
    var classList = [];
    var cls = className(node); // get node's className
    name.split(/\s+/g).forEach(function(klass) {
        if (!hasClass(node, klass)) {
            classList.push(klass);
        }
    });
    return classList.length && className(node, cls + (cls ? ' ' : '') + classList.join(' '));
}

function removeClass(node, name) {
    if (!('className' in node)) {
        return;
    }
    if (name === undefined) {
        return className(node, '');
    }
    let cls = className(node);
    name.split(/\s+/g)
        .forEach((klass) => cls = cls.replace(classRE(klass), ' '));
    className(node, cls.trim());
}

function classRE(name) {
    return name in classCache ?
        classCache[name] : (classCache[name] = new RegExp('(^|\\s)' + name + '(\\s|$)'));
}
// access className property while respecting SVGAnimatedString
function className(el, value) {
    var klass = el.className || '',
        svg = klass && klass.baseVal !== undefined;

    // get className
    if (value === undefined) {
        return svg ? klass.baseVal : klass;
    }

    // set className
    return svg ? (klass.baseVal = value) : (el.className = value);
}

// Toggle icon =====================================================================
var toggle = document.createElement('div');
toggle.className = "ivnote-web-clipper-icon";
document.body.appendChild(toggle);

var enable = false;

toggle.addEventListener('click', function(e) {
  if (_.hasClass(toggle, 'ivnote-web-clipper-enable')) {
    // turn it off
    _.removeClass(toggle, 'ivnote-web-clipper-enable');
    enable = false;
  } else {
    // turn it on
    _.addClass(toggle, 'ivnote-web-clipper-enable');
    enable = true;
  }
  e.stopPropagation();
});

// Manipulate the doms ==============================================================
document.addEventListener('mouseover', function(e) {
    if (enable) _.addClass(e.target, 'ivnote-hover');
});

document.addEventListener('mouseout', function(e) {
    if (enable) {
        _.removeClass(e.target, 'ivnote-hover');

        // To be safe
        var select = document.querySelectorAll('.ivnote-hover');
        Array.prototype.slice.call(select).forEach(function(el) { _.removeClass(el, 'ivnote-hover'); });
    }
});

document.addEventListener('click', function(e) {
    if (enable) {
        var el = e.target;
        var markdown = '*The note is clipped from [here](' + location.href + ').*\n\n' +
            (document.title ? '#' + document.title + '\n\n' : '') +
            toMarkdown(el.outerHTML, {
                gfm: true,
                converters: [{
                    filter: 'div',
                    replacement: function(content) {
                        return '\n' + content + '\n';
                    }
                }, {
                    filter: 'span',
                    replacement: function(content) {
                        return content;
                    }
                }, {
                    filter: function(node) {
                        return node.nodeName === 'A' && !node.getAttribute('href');
                    },
                    replacement: function(content) {
                        return content;
                    }
                }]
            });
        copyTextToClipboard(markdown);
    }
});

// Copy to the clipboard ============================================================
// Copyright (c) Dean Taylor. Original post: http://stackoverflow.com/a/30810322/4158282
function copyTextToClipboard(text) {
  var textArea = document.createElement("textarea");
  textArea.style.position = 'fixed';
  textArea.style.top = 0;
  textArea.style.left = 0;
  textArea.style.width = '2em';
  textArea.style.height = '2em';
  textArea.style.padding = 0;
  textArea.style.border = 'none';
  textArea.style.outline = 'none';
  textArea.style.boxShadow = 'none';
  textArea.style.background = 'transparent';
  textArea.value = text;
  document.body.appendChild(textArea);
  textArea.select();
  try {
    var successful = document.execCommand('copy');
    var msg = successful ? 'successful' : 'unsuccessful';
    console.log('Copying text command was ' + msg);
  } catch (err) {
    console.log('Oops, unable to copy');
  }
  document.body.removeChild(textArea);
}

})();
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