Dashboard で一度見たポストを覚えて再度表示されないようにします

ive_seen_it_in_tumblr.user.js

// ==UserScript==
// @name        I've seen it in tumblr.
// @match       http://www.tumblr.com/dashboard*
// @version     1.0.0
// @description 一度見たポストを表示しないようにさせます
// 
// @author      poochin
// @license     MIT
// @updated     2012-06-14
// ==/UserScript==

(function IveSeenItInTumblr() {

var reblog_keys,
    enable;

function postappended(post) {
    var reblog_key;

    reblog_key = post.querySelector('a.reblog_button').getAttribute('data-reblog-key');
    if (reblog_keys[reblog_key]) {
        console.log('Delete:', post.getAttribute('id'));
        post.parentNode.removeChild(post);
    }
    else {
        reblog_keys[reblog_key] = 1;
    }
}

function appendToPosts(e) {
    if (enable == false) {
    }
    else if (e.target.nodeType == document.ELEMENT_NODE) {
        postappended(e.target);
    }
}

function init() {
    enable = localStorage.getItem('itintumblr_enable');
    enable = (enable == null ? false : enable == 'true');

    reblog_keys = localStorage.getItem('itintumblr_reblog_keys');
    reblog_keys = (reblog_keys == null ? {} : JSON.parse(reblog_keys));
}

function command_field() {
    var base, right_column, itintumblr, toggle_messages;

    toggle_messages = ['toEnable', 'toDisable'];

    base = [
        '<fieldset id="itintumblr">',
        '<legend>I\'ve seen it in tumblr.</legend>',
        '<button class="enable_toggle_button"></button>',
        '<button class="save_button">Save</button>',
        '<button class="clear_button">Clear</button>',
        '</fieldset>'].join('');

    right_column = document.querySelector('#right_column');
    right_column.innerHTML += base;

    itintumblr = right_column.querySelector('#itintumblr');

    itintumblr.querySelector('.enable_toggle_button').innerText = toggle_messages[enable + 0];
    itintumblr.querySelector('.enable_toggle_button').addEventListener('click', function(e) {
        enable = !enable;
        localStorage.setItem('itintumblr_enable', enable);
        e.target.innerText = toggle_messages[enable + 0];
    }, true);

    itintumblr.querySelector('.save_button').addEventListener('click', function(e) {
        localStorage.setItem('itintumblr_reblog_keys', JSON.stringify(reblog_keys));
    }, true);

    itintumblr.querySelector('.clear_button').addEventListener('clear', function(e) {
        localStorage.removeItem('itintumblr_reblog_keys');
        reblog_keys = {};
    }, true);
}

function main() {
    init();
    command_field();

    document.querySelector('#posts').addEventListener('DOMNodeInserted', appendToPosts, true);
    if (enable) {
        Array.prototype.slice.call(document.querySelectorAll('#posts > li.post:not(.new_post)')).map(postappended);
    }
}

function isExecPage() {
    if (/^https?:\/\/[^\/]+\/.*/.test(location) /* for Opera */) {
        return true;
    }
}

if (window.document.body) {
    if (isExecPage() /* for Opera */) {
        main();
    }
}
else {
    window.document.addEventListener('DOMContentLoaded', main, false);
}

})();