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function DummyStore() { | |
var instance; | |
return instance = | |
{ store: {} | |
, setItem: function (key, val) { | |
instance.store[key] = val; | |
return val; | |
} | |
, getItem: function (key, def) { | |
var val = instance.store[key]; | |
return val == null ? def : val; | |
} | |
, tryItem: function (key, val) { | |
var curr = instance.getItem(key, undefined); | |
return curr == null ? instance.setItem(key, val) : curr; | |
} | |
, clear: function () { | |
this.store = {}; | |
} | |
}; | |
} | |
function PyStore(py) { | |
py.data = py.data || {}; | |
var instance; | |
return instance = | |
{ setItem: function (key, val) { | |
py.data[key] = val; | |
return val; | |
} | |
, getItem: function (key, def) { | |
var val = py.data[key]; | |
return val == null ? def : val; | |
} | |
, tryItem: function (key, val) { | |
var curr = instance.getItem(key, undefined); | |
return curr == null ? instance.setItem(key, val) : curr; | |
} | |
, clear: function () { | |
py.data = {}; | |
} | |
}; | |
} | |
function SessionStore(sessionStorage) { | |
var instance; | |
return instance = | |
{ setItem: function (key, val) { | |
sessionStorage.setItem(key, val); | |
return val; | |
} | |
, getItem: function (key, def) { | |
var val = sessionStorage.getItem(key); | |
return val == null ? def : val; | |
} | |
, tryItem: function (key, val) { | |
var curr = instance.getItem(key, undefined); | |
return curr == null ? instance.setItem(key, val) : curr; | |
} | |
, clear: function () { | |
sessionStorage.clear(); | |
} | |
}; | |
} | |
function persist(cb) { | |
window.setTimeout(function() { | |
// Determine whether to use Anki's Bridge object (Desktop) or sessionStorage (AnkiDroid) to store data across sides. | |
store = typeof(py) !== "undefined" | |
? PyStore(py) | |
: typeof(sessionStorage) !== "undefined" | |
? SessionStore(sessionStorage) | |
: DummyStore(); | |
if (!document.getElementById('answer')) { | |
store.clear() | |
} | |
cb(store); | |
}, 0); //Execute after Anki has loaded its Bridge object. | |
} | |
function run(store) { | |
elements = document.getElementsByClassName('choice'); | |
while (elements.length > 0) { | |
choices = eval(elements[0].innerText); | |
rand = store.tryItem('rand' + choices[0], Math.random()); | |
choice = choices.slice(1)[Math.floor(rand * (choices.length - 1))]; | |
if (typeof(choice) === "string") { | |
elements[0].insertAdjacentText('afterEnd', choice); | |
} else { | |
html = '<div class="choice">'+JSON.stringify(choice)+'</div>'; | |
elements[0].insertAdjacentHTML('afterEnd', html); | |
} | |
var parent = elements[0].parentElement; | |
parent.removeChild(elements[0]); | |
elements = document.getElementsByClassName('choice'); | |
} | |
} | |
persist(run); |
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