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Keep track of the movies you've seen in the IMDb Top 250 and Bottom 100 !
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// ==UserScript==
// @name IMDb Top 250 & Bottom 100
// @version 2.3.1
// @description Keep track of the movies you've seen in the IMDb Top 250 and Bottom 100 !
// @namespace https://github.com/mimaison/gm_imdb_charts
// @grant none
// @match http://www.imdb.com/chart/top*
// @match http://www.imdb.com/chart/bottom*
// ==/UserScript==
(function(window, document) {
'use strict';
var GmImdb = {
localStorageName: 'IMDB_Movies',
localStorageTop: 'mm_movies_top',
localStorageBottom: 'mm_movies_bottom',
checked: 0,
table: null,
init: function() {
// Migration from pre 2.0 versions
if (GmImdb.localStorageName in localStorage) {
localStorage[GmImdb.localStorageTop] = localStorage[GmImdb.localStorageName].slice(0);
delete localStorage[GmImdb.localStorageName];
}
if (!this.supported()) {
this.message('Your browser does not support LocalStorage');
return;
}
this.table = this.getTable();
if (this.table === null) {
return;
}
this.run();
},
isTop: function() {
var url = window.location.href.toLowerCase();
return url.match(/^https?:\/\/www\.imdb\.com\/chart\/top/);
},
message: function(message) {
var element = document.getElementById('GmImdbStats');
element.innerHTML = message;
document.getElementById('reset').addEventListener('click', this.reset, true);
},
getTable: function() {
var len = (GmImdb.isTop()) ? 251 : 101;
var tables = document.getElementsByTagName('table');
for (var i = 0; i < tables.length; i++) {
if (tables[i].getElementsByTagName('tr').length === len) {
return tables[i];
}
}
return null;
},
toggle: function() {
if (this.checked) {
GmImdb.add(this.id);
GmImdb.checked++;
} else {
GmImdb.remove(this.id);
GmImdb.checked--;
}
GmImdb.updateStats();
},
extractID: function(url) {
return url.split('/')[4];
},
run: function() {
var movies = this.getMovies();
this.addCheckBoxes(movies);
this.addStats();
},
getMovies: function() {
var movies = (GmImdb.isTop()) ? localStorage[GmImdb.localStorageTop] : localStorage[GmImdb.localStorageBottom];
return (movies === undefined) ? [] : movies.split(',');
},
addCheckBoxes: function(movies) {
var rows = this.table.getElementsByTagName('tr');
for (var i = 0; i < rows.length; i++) {
var cols = rows[i].getElementsByTagName('td');
var col;
if (i === 0) {
col = document.createElement('th');
col.innerHTML = 'Seen';
rows[i].appendChild(col);
} else {
col = document.createElement('td');
var title = this.extractID(cols[1].getElementsByTagName('a')[0].href);
var checked = '';
if (movies.indexOf(title) !== -1) {
this.checked++;
checked = ' checked="checked"';
}
col.innerHTML = '<input type="checkbox" id="' + title + '" ' + checked + '/>';
rows[i].appendChild(col);
document.getElementById(title).addEventListener('click', this.toggle, true);
}
}
},
addStats: function() {
var parent = this.table.parentNode;
var stat = document.createElement('div');
stat.id = 'GmImdbStats';
stat.align = 'center';
parent.insertBefore(stat, this.table);
this.updateStats();
},
updateStats: function() {
var message = 'You have seen ' + this.checked + ' movie' + ((this.checked !== 1) ? 's' : '') + ' of the IMDb ';
if (GmImdb.isTop()) {
message += 'Top 250 (' + (this.checked * 100 / 250) + '%) !';
} else {
message += 'Bottom 100 (' + this.checked + '%) !';
}
message += ' - <a href="#" id="reset">Reset</a>';
GmImdb.message(message);
},
reset: function() {
if (confirm('Are you sure you want to reset the movies you have seen ? (This cannot be undone)')) {
var movies = GmImdb.getMovies();
for (var i = 0; i < movies.length; i++) {
document.getElementById(movies[i]).checked = false;
}
if (GmImdb.isTop()) {
delete localStorage[GmImdb.localStorageTop];
} else {
delete localStorage[GmImdb.localStorageBottom];
}
GmImdb.checked = 0;
GmImdb.updateStats();
}
},
supported: function() {
try {
return 'localStorage' in window && window.localStorage !== null;
} catch (e) {
return false;
}
},
add: function(id) {
var movies = GmImdb.getMovies();
movies.push(id);
if (GmImdb.isTop()) {
localStorage[GmImdb.localStorageTop] = movies.join();
} else {
localStorage[GmImdb.localStorageBottom] = movies.join();
}
},
remove: function(id) {
var movies = GmImdb.getMovies();
var index = movies.indexOf(id);
if (index !== -1) {
movies.splice(index, 1);
}
if (GmImdb.isTop()) {
localStorage[GmImdb.localStorageTop] = movies.join();
} else {
localStorage[GmImdb.localStorageBottom] = movies.join();
}
}
};
window.GmImdb = GmImdb;
GmImdb.init();
})(window, window.document);