neatools.js

/*
 Neatools: a nano JavaScript framework made just for vBookmarks and nothing else.
 Heavily inspired by MooTools (http://mootools.net/).
 Works for Chrome 8 and above.
 */

var $ = function (id) {
    return document.getElementById(id);
};

function $extend(original, extended) {
    for (var key in (extended || {}))
        original[key] = extended[key];
    return original;
};

function $each(obj, fn, bind) {
    for (var key in obj) {
        if (obj.hasOwnProperty(key))
            fn.call(bind, obj[key], key, obj);
    }
}

var $slice = Array.prototype.slice;

$extend(String.prototype, {
    widont: function () {
        return this.replace(/\s([^\s]+)$/i, ' $1');
    },
    toInt: function (base) {
        return parseInt(this, base || 10);
    },
    hyphenate: function () {
        return this.replace(/[A-Z]/g, function (match) {
            return ('-' + match.charAt(0).toLowerCase());
        });
    },
    htmlspecialchars: function () {
        return this.replace(/>/g, '&gt;').replace(/</g, '&lt;').replace(/"/g, '&quot;');
    },
    escapeRegExp: function () {
        return this.replace(/([-.*+?^${}()|[\]\/\\])/g, '\\$1');
    }
});

$extend(Array.prototype, {
    contains: function (item, from) {
        return this.indexOf(item, from) != -1;
    },
    clean: function () {
        return this.filter(function (obj) {
            return (obj != undefined);
        });
    },
    getLast: function () {
        return (this.length) ? this[this.length - 1] : null;
    }
});

// Array generic
['map', 'filter', 'forEach'].forEach(function (method) {
    if (!Array[method])
        Array[method] = function () {
            var args = $slice.call(arguments);
            return Array.prototype[method].apply(args.pop(), args);
        };
});

$extend(Element.prototype, {
    getComputedStyle: function (property) {
        return window.getComputedStyle(this, null).getPropertyValue(property.hyphenate());
    },
    destroy: function () {
        return (this.parentNode) ? this.parentNode.removeChild(this) : this;
    },
    hasClass: function (className) {
        return this.classList.contains(className);
    },
    addClass: function (className) {
        this.classList.add(className);
        return this;
    },
    removeClass: function (className) {
        this.classList.remove(className);
        return this;
    },
    toggleClass: function (className) {
        this.classList.toggle(className);
        return this;
    },
    getAllNext: function () {
        var elements = [];
        var node = this;
        while (node = node.nextElementSibling) {
            elements.push(node);
        }
        return elements;
    },
    getAllPrevious: function () {
        var elements = [];
        var node = this;
        while (node = node.previousElementSibling) {
            elements.push(node);
        }
        return elements;
    },
    getSiblings: function () {
        return this.getAllNext().concat(this.getAllPrevious());
    }
});

(function () {

    var inserters = {
        before: function (context, element) {
            var parent = element.parentNode;
            if (parent)
                parent.insertBefore(context, element);
        },
        after: function (context, element) {
            var parent = element.parentNode;
            if (parent)
                parent.insertBefore(context, element.nextSibling);
        },
        bottom: function (context, element) {
            element.appendChild(context);
        },
        top: function (context, element) {
            element.insertBefore(context, element.firstChild);
        }
    };

    Element.prototype.inject = function (el, where) {
        inserters[where || 'bottom'](this, el);
        return this;
    };

})();

function getPageZoom() {
    //RETURN: 1.0 for 100%, and so on
    var zoom = 1.0;

    try {
        var svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
        svg.setAttribute('xmlns', 'http://www.w3.org/2000/svg');
        svg.setAttribute('version', '1.1');
        document.body.appendChild(svg);
        zoom = svg.currentScale;
        document.body.removeChild(svg);
    } catch (e) {
        console.error("Zoom method failed: " + e.message);
    }

    return zoom;
}