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define([
"jQuery",
"utils/storage"
], function($, storage) {
var fontState;
var THEMES = {
"white": 0,
"sepia": 1,
"night": 2
};
var FAMILY = {
"serif": 0,
"sans": 1
};
var togglePopover = function(e) {
var $dropdown = $("#font-settings-wrapper .dropdown-menu");
$dropdown.toggleClass("open");
e.stopPropagation();
e.preventDefault();
};
var closePopover = function(e) {
var $dropdown = $("#font-settings-wrapper .dropdown-menu");
$dropdown.removeClass("open");
};
var enlargeFontSize = function(e){
if (fontState.size < 4){
fontState.size++;
fontState.save();
}
};
var reduceFontSize = function(e){
if (fontState.size > 0){
fontState.size--;
fontState.save();
}
};
var changeFontFamily = function(){
var index = $(this).data("font");
fontState.family = index;
fontState.save();
};
var changeColorTheme = function(){
var $book = $(".book");
var index = $(this).data("theme");
if (fontState.theme !== 0)
$book.removeClass("color-theme-"+fontState.theme);
fontState.theme = index;
if (fontState.theme !== 0)
$book.addClass("color-theme-"+fontState.theme);
fontState.save();
};
var update = function() {
var $book = $(".book");
$(".font-settings .font-family-list li").removeClass("active");
$(".font-settings .font-family-list li:nth-child("+(fontState.family+1)+")").addClass("active");
$book[0].className = $book[0].className.replace(/\bfont-\S+/g, '');
$book.addClass("font-size-"+fontState.size);
$book.addClass("font-family-"+fontState.family);
if(fontState.theme !== 0) {
$book[0].className = $book[0].className.replace(/\bcolor-theme-\S+/g, '');
$book.addClass("color-theme-"+fontState.theme);
}
};
var init = function(config) {
var $toggle, $bookBody, $dropdown, $book;
//Find DOM elements.
$book = $(".book");
$toggle = $(".book-header .toggle-font-settings");
$dropdown = $("#font-settings-wrapper .dropdown-menu");
$bookBody = $(".book-body");
// Instantiate font state object
fontState = storage.get("fontState", {
size: config.size || 1,
family: FAMILY[config.family || "serif"],
theme: THEMES[config.theme || "white"]
});
fontState.save = function(){
storage.set("fontState",fontState);
update();
};
update();
//Add event listeners
$(document).on('click', "#enlarge-font-size", enlargeFontSize);
$(document).on('click', "#reduce-font-size", reduceFontSize);
$(document).on('click', "#font-settings-wrapper .font-family-list li", changeFontFamily);
$(document).on('click', "#font-settings-wrapper .color-theme-list button", changeColorTheme);
$(document).on('click', ".book-header .toggle-font-settings", togglePopover);
$(document).on('click', "#font-settings-wrapper .dropdown-menu", function(e){ e.stopPropagation(); });
$(document).on("click", closePopover);
};
return {
init: init,
update: update
}
});
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