/usr/share/horde/ansel/js/carousel.js is in php-horde-ansel 3.0.5+debian0-1.
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*
* Prototype-UI is freely distributable under the terms of an MIT-style license.
* For details, see the PrototypeUI web site: http://www.prototype-ui.com/
*
*--------------------------------------------------------------------------*/
if(typeof Prototype == 'undefined' )
throw("Prototype-UI library require Prototype library >= 1.6.0");
if (Prototype.Browser.WebKit) {
Prototype.Browser.WebKitVersion = parseFloat(navigator.userAgent.match(/AppleWebKit\/([\d\.\+]*)/)[1]);
Prototype.Browser.Safari2 = (Prototype.Browser.WebKitVersion < 420);
}
if (Prototype.Browser.IE) {
Prototype.Browser.IEVersion = parseFloat(navigator.appVersion.split(';')[1].strip().split(' ')[1]);
Prototype.Browser.IE6 = Prototype.Browser.IEVersion == 6;
Prototype.Browser.IE7 = Prototype.Browser.IEVersion == 7;
}
Prototype.falseFunction = function() { return false };
Prototype.trueFunction = function() { return true };
/*
Namespace: UI
Introduction:
Prototype-UI is a library of user interface components based on the Prototype framework.
Its aim is to easilly improve user experience in web applications.
It also provides utilities to help developers.
Guideline:
- Prototype conventions are followed
- Everything should be unobstrusive
- All components are themable with CSS stylesheets, various themes are provided
Warning:
Prototype-UI is still under deep development, this release is targeted to developers only.
All interfaces are subjects to changes, suggestions are welcome.
DO NOT use it in production for now.
Authors:
- Sébastien Gruhier, <http://www.xilinus.com>
- Samuel Lebeau, <http://gotfresh.info>
*/
var UI = {
Abstract: { },
Ajax: { }
};
Object.extend(Class.Methods, {
extend: Object.extend.methodize(),
addMethods: Class.Methods.addMethods.wrap(function(proceed, source) {
// ensure we are not trying to add null or undefined
if (!source) return this;
// no callback, vanilla way
if (!source.hasOwnProperty('methodsAdded'))
return proceed(source);
var callback = source.methodsAdded;
delete source.methodsAdded;
proceed(source);
callback.call(source, this);
source.methodsAdded = callback;
return this;
}),
addMethod: function(name, lambda) {
var methods = {};
methods[name] = lambda;
return this.addMethods(methods);
},
method: function(name) {
return this.prototype[name].valueOf();
},
classMethod: function() {
$A(arguments).flatten().each(function(method) {
this[method] = (function() {
return this[method].apply(this, arguments);
}).bind(this.prototype);
}, this);
return this;
},
// prevent any call to this method
undefMethod: function(name) {
this.prototype[name] = undefined;
return this;
},
// remove the class' own implementation of this method
removeMethod: function(name) {
delete this.prototype[name];
return this;
},
aliasMethod: function(newName, name) {
this.prototype[newName] = this.prototype[name];
return this;
},
aliasMethodChain: function(target, feature) {
feature = feature.camelcase();
this.aliasMethod(target+"Without"+feature, target);
this.aliasMethod(target, target+"With"+feature);
return this;
}
});
Object.extend(Number.prototype, {
// Snap a number to a grid
snap: function(round) {
return parseInt(round == 1 ? this : (this / round).floor() * round);
}
});
/*
Interface: String
*/
Object.extend(String.prototype, {
camelcase: function() {
var string = this.dasherize().camelize();
return string.charAt(0).toUpperCase() + string.slice(1);
},
/*
Method: makeElement
toElement is unfortunately already taken :/
Transforms html string into an extended element or null (when failed)
> '<li><a href="#">some text</a></li>'.makeElement(); // => LI href#
> '<img src="foo" id="bar" /><img src="bar" id="bar" />'.makeElement(); // => IMG#foo (first one)
Returns:
Extended element
*/
makeElement: function() {
var wrapper = new Element('div'); wrapper.innerHTML = this;
return wrapper.down();
}
});
Object.extend(Array.prototype, {
empty: function() {
return !this.length;
},
extractOptions: function() {
return this.last().constructor === Object ? this.pop() : { };
},
removeAt: function(index) {
var object = this[index];
this.splice(index, 1);
return object;
},
remove: function(object) {
var index;
while ((index = this.indexOf(object)) != -1)
this.removeAt(index);
return object;
},
insert: function(index) {
var args = $A(arguments);
args.shift();
this.splice.apply(this, [ index, 0 ].concat(args));
return this;
}
});
Element.addMethods({
getScrollDimensions: function(element) {
return {
width: element.scrollWidth,
height: element.scrollHeight
}
},
getScrollOffset: function(element) {
return Element._returnOffset(element.scrollLeft, element.scrollTop);
},
setScrollOffset: function(element, offset) {
element = $(element);
if (arguments.length == 3)
offset = { left: offset, top: arguments[2] };
element.scrollLeft = offset.left;
element.scrollTop = offset.top;
return element;
},
// returns "clean" numerical style (without "px") or null if style can not be resolved
// or is not numeric
getNumStyle: function(element, style) {
var value = parseFloat($(element).getStyle(style));
return isNaN(value) ? null : value;
},
// by Tobie Langel (http://tobielangel.com/2007/5/22/prototype-quick-tip)
appendText: function(element, text) {
element = $(element);
text = String.interpret(text);
element.appendChild(document.createTextNode(text));
return element;
}
});
document.whenReady = function(callback) {
if (document.loaded)
callback.call(document);
else
document.observe('dom:loaded', callback);
};
Object.extend(document.viewport, {
// Alias this method for consistency
getScrollOffset: document.viewport.getScrollOffsets,
setScrollOffset: function(offset) {
Element.setScrollOffset(Prototype.Browser.WebKit ? document.body : document.documentElement, offset);
},
getScrollDimensions: function() {
return Element.getScrollDimensions(Prototype.Browser.WebKit ? document.body : document.documentElement);
}
});
/*
Interface: UI.Options
Mixin to handle *options* argument in initializer pattern.
TODO: find a better example than Circle that use an imaginary Point function,
this example should be used in tests too.
It assumes class defines a property called *options*, containing
default options values.
Instances hold their own *options* property after a first call to <setOptions>.
Example:
> var Circle = Class.create(UI.Options, {
>
> // default options
> options: {
> radius: 1,
> origin: Point(0, 0)
> },
>
> // common usage is to call setOptions in initializer
> initialize: function(options) {
> this.setOptions(options);
> }
> });
>
> var circle = new Circle({ origin: Point(1, 4) });
>
> circle.options
> // => { radius: 1, origin: Point(1,4) }
Accessors:
There are builtin methods to automatically write options accessors. All those
methods can take either an array of option names nor option names as arguments.
Notice that those methods won't override an accessor method if already present.
* <optionsGetter> creates getters
* <optionsSetter> creates setters
* <optionsAccessor> creates both getters and setters
Common usage is to invoke them on a class to create accessors for all instances
of this class.
Invoking those methods on a class has the same effect as invoking them on the class prototype.
See <classMethod> for more details.
Example:
> // Creates getter and setter for the "radius" options of circles
> Circle.optionsAccessor('radius');
>
> circle.setRadius(4);
> // 4
>
> circle.getRadius();
> // => 4 (circle.options.radius)
Inheritance support:
Subclasses can refine default *options* values, after a first instance call on setOptions,
*options* attribute will hold all default options values coming from the inheritance hierarchy.
*/
(function() {
UI.Options = {
methodsAdded: function(klass) {
klass.classMethod($w(' setOptions allOptions optionsGetter optionsSetter optionsAccessor '));
},
// Group: Methods
/*
Method: setOptions
Extends object's *options* property with the given object
*/
setOptions: function(options) {
if (!this.hasOwnProperty('options'))
this.options = this.allOptions();
this.options = Object.extend(this.options, options || {});
},
/*
Method: allOptions
Computes the complete default options hash made by reverse extending all superclasses
default options.
> Widget.prototype.allOptions();
*/
allOptions: function() {
var superclass = this.constructor.superclass, ancestor = superclass && superclass.prototype;
return (ancestor && ancestor.allOptions) ?
Object.extend(ancestor.allOptions(), this.options) :
Object.clone(this.options);
},
/*
Method: optionsGetter
Creates default getters for option names given as arguments.
With no argument, creates getters for all option names.
*/
optionsGetter: function() {
addOptionsAccessors(this, arguments, false);
},
/*
Method: optionsSetter
Creates default setters for option names given as arguments.
With no argument, creates setters for all option names.
*/
optionsSetter: function() {
addOptionsAccessors(this, arguments, true);
},
/*
Method: optionsAccessor
Creates default getters/setters for option names given as arguments.
With no argument, creates accessors for all option names.
*/
optionsAccessor: function() {
this.optionsGetter.apply(this, arguments);
this.optionsSetter.apply(this, arguments);
}
};
// Internal
function addOptionsAccessors(receiver, names, areSetters) {
names = $A(names).flatten();
if (names.empty())
names = Object.keys(receiver.allOptions());
names.each(function(name) {
var accessorName = (areSetters ? 'set' : 'get') + name.camelcase();
receiver[accessorName] = receiver[accessorName] || (areSetters ?
// Setter
function(value) { return this.options[name] = value } :
// Getter
function() { return this.options[name] });
});
}
})();
/*
Class: UI.Carousel
Main class to handle a carousel of elements in a page. A carousel :
* could be vertical or horizontal
* works with liquid layout
* is designed by CSS
Assumptions:
* Elements should be from the same size
Example:
> ...
> <div id="horizontal_carousel">
> <div class="previous_button"></div>
> <div class="container">
> <ul>
> <li> What ever you like</li>
> </ul>
> </div>
> <div class="next_button"></div>
> </div>
> <script>
> new UI.Carousel("horizontal_carousel");
> </script>
> ...
*/
UI.Carousel = Class.create(UI.Options, {
// Group: Options
options: {
// Property: direction
// Can be horizontal or vertical, horizontal by default
direction : "horizontal",
// Property: previousButton
// Selector of previous button inside carousel element, ".previous_button" by default,
// set it to false to ignore previous button
previousButton : ".previous_button",
// Property: nextButton
// Selector of next button inside carousel element, ".next_button" by default,
// set it to false to ignore next button
nextButton : ".next_button",
// Property: container
// Selector of carousel container inside carousel element, ".container" by default,
container : ".container",
// Property: scrollInc
// Define the maximum number of elements that gonna scroll each time, auto by default
scrollInc : "auto",
// Property: disabledButtonSuffix
// Define the suffix classanme used when a button get disabled, to '_disabled' by default
// Previous button classname will be previous_button_disabled
disabledButtonSuffix : '_disabled',
// Property: overButtonSuffix
// Define the suffix classanme used when a button has a rollover status, '_over' by default
// Previous button classname will be previous_button_over
overButtonSuffix : '_over'
},
/*
Group: Attributes
Property: element
DOM element containing the carousel
Property: id
DOM id of the carousel's element
Property: container
DOM element containing the carousel's elements
Property: elements
Array containing the carousel's elements as DOM elements
Property: previousButton
DOM id of the previous button
Property: nextButton
DOM id of the next button
Property: posAttribute
Define if the positions are from left or top
Property: dimAttribute
Define if the dimensions are horizontal or vertical
Property: elementSize
Size of each element, it's an integer
Property: nbVisible
Number of visible elements, it's a float
Property: animating
Define whether the carousel is in animation or not
*/
/*
Group: Events
List of events fired by a carousel
Notice: Carousel custom events are automatically namespaced in "carousel:" (see Prototype custom events).
Examples:
This example will observe all carousels
> document.observe('carousel:scroll:ended', function(event) {
> alert("Carousel with id " + event.memo.carousel.id + " has just been scrolled");
> });
This example will observe only this carousel
> new UI.Carousel('horizontal_carousel').observe('scroll:ended', function(event) {
> alert("Carousel with id " + event.memo.carousel.id + " has just been scrolled");
> });
Property: previousButton:enabled
Fired when the previous button has just been enabled
Property: previousButton:disabled
Fired when the previous button has just been disabled
Property: nextButton:enabled
Fired when the next button has just been enabled
Property: nextButton:disabled
Fired when the next button has just been disabled
Property: scroll:started
Fired when a scroll has just started
Property: scroll:ended
Fired when a scroll has been done,
memo.shift = number of elements scrolled, it's a float
Property: sizeUpdated
Fired when the carousel size has just been updated.
Tips: memo.carousel.currentSize() = the new carousel size
*/
// Group: Constructor
/*
Method: initialize
Constructor function, should not be called directly
Parameters:
element - DOM element
options - (Hash) list of optional parameters
Returns:
this
*/
initialize: function(element, options) {
this.setOptions(options);
this.element = $(element);
this.id = this.element.id;
this.container = this.element.down(this.options.container).firstDescendant();
this.elements = this.container.childElements();
this.previousButton = this.options.previousButton == false ? null : this.element.down(this.options.previousButton);
this.nextButton = this.options.nextButton == false ? null : this.element.down(this.options.nextButton);
this.posAttribute = (this.options.direction == "horizontal" ? "left" : "top");
this.dimAttribute = (this.options.direction == "horizontal" ? "width" : "height");
this.elementSize = this.computeElementSize();
this.nbVisible = this.currentSize() / this.elementSize;
var scrollInc = this.options.scrollInc;
if (scrollInc == "auto")
scrollInc = Math.floor(this.nbVisible);
[ this.previousButton, this.nextButton ].each(function(button) {
if (!button) return;
var className = (button == this.nextButton ? "next_button" : "previous_button") + this.options.overButtonSuffix;
button.clickHandler = this.scroll.bind(this, (button == this.nextButton ? -1 : 1) * scrollInc * this.elementSize);
button.observe("click", button.clickHandler)
.observe("mouseover", function() {button.addClassName(className)}.bind(this))
.observe("mouseout", function() {button.removeClassName(className)}.bind(this));
}, this);
this.updateButtons();
},
// Group: Destructor
/*
Method: destroy
Cleans up DOM and memory
*/
destroy: function($super) {
[ this.previousButton, this.nextButton ].each(function(button) {
if (!button) return;
button.stopObserving("click", button.clickHandler);
}, this);
this.element.remove();
this.fire('destroyed');
},
// Group: Event handling
/*
Method: fire
Fires a carousel custom event automatically namespaced in "carousel:" (see Prototype custom events).
The memo object contains a "carousel" property referring to the carousel.
Example:
> document.observe('carousel:scroll:ended', function(event) {
> alert("Carousel with id " + event.memo.carousel.id + " has just been scrolled");
> });
Parameters:
eventName - an event name
memo - a memo object
Returns:
fired event
*/
fire: function(eventName, memo) {
memo = memo || { };
memo.carousel = this;
return this.element.fire('carousel:' + eventName, memo);
},
/*
Method: observe
Observe a carousel event with a handler function automatically bound to the carousel
Parameters:
eventName - an event name
handler - a handler function
Returns:
this
*/
observe: function(eventName, handler) {
this.element.observe('carousel:' + eventName, handler.bind(this));
return this;
},
/*
Method: stopObserving
Unregisters a carousel event, it must take the same parameters as this.observe (see Prototype stopObserving).
Parameters:
eventName - an event name
handler - a handler function
Returns:
this
*/
stopObserving: function(eventName, handler) {
this.element.stopObserving('carousel:' + eventName, handler);
return this;
},
// Group: Actions
/*
Method: checkScroll
Check scroll position to avoid unused space at right or bottom
Parameters:
position - position to check
updatePosition - should the container position be updated ? true/false
Returns:
position
*/
checkScroll: function(position, updatePosition) {
if (position > 0)
position = 0;
else {
var limit = this.elements.last().positionedOffset()[this.posAttribute] + this.elementSize;
var carouselSize = this.currentSize();
if (position + limit < carouselSize)
position += carouselSize - (position + limit);
position = Math.min(position, 0);
}
if (updatePosition)
this.container.style[this.posAttribute] = position + "px";
return position;
},
/*
Method: scroll
Scrolls carousel from maximum deltaPixel
Parameters:
deltaPixel - a float
Returns:
this
*/
scroll: function(deltaPixel) {
if (this.animating)
return this;
// Compute new position
var position = this.currentPosition() + deltaPixel;
// Check bounds
position = this.checkScroll(position, false);
// Compute shift to apply
deltaPixel = position - this.currentPosition();
if (deltaPixel != 0) {
this.animating = true;
this.fire("scroll:started");
var that = this;
// Move effects
this.container.morph("opacity:0.5", {duration: 0.2, afterFinish: function() {
that.container.morph(that.posAttribute + ": " + position + "px", {
duration: 0.4,
delay: 0.2,
afterFinish: function() {
that.container.morph("opacity:1", {
duration: 0.2,
afterFinish: function() {
that.animating = false;
that.updateButtons()
.fire("scroll:ended", { shift: deltaPixel / that.currentSize() });
}
});
}
});
}});
}
return this;
},
/*
Method: scrollTo
Scrolls carousel, so that element with specified index is the left-most.
This method is convenient when using carousel in a tabbed navigation.
Clicking on first tab should scroll first container into view, clicking on a fifth - fifth one, etc.
Indexing starts with 0.
Parameters:
Index of an element which will be a left-most visible in the carousel
Returns:
this
*/
scrollTo: function(index) {
if (this.animating || index < 0 || index > this.elements.length || index == this.currentIndex() || isNaN(parseInt(index)))
return this;
return this.scroll((this.currentIndex() - index) * this.elementSize);
},
/*
Method: updateButtons
Update buttons status to enabled or disabled
Them status is defined by classNames and fired as carousel's custom events
Returns:
this
*/
updateButtons: function() {
this.updatePreviousButton();
this.updateNextButton();
return this;
},
updatePreviousButton: function() {
var position = this.currentPosition();
var previousClassName = "previous_button" + this.options.disabledButtonSuffix;
if (this.previousButton.hasClassName(previousClassName) && position != 0) {
this.previousButton.removeClassName(previousClassName);
this.fire('previousButton:enabled');
}
if (!this.previousButton.hasClassName(previousClassName) && position == 0) {
this.previousButton.addClassName(previousClassName);
this.fire('previousButton:disabled');
}
},
updateNextButton: function() {
var lastPosition = this.currentLastPosition();
var size = this.currentSize();
var nextClassName = "next_button" + this.options.disabledButtonSuffix;
if (this.nextButton.hasClassName(nextClassName) && lastPosition != size) {
this.nextButton.removeClassName(nextClassName);
this.fire('nextButton:enabled');
}
if (!this.nextButton.hasClassName(nextClassName) && lastPosition == size) {
this.nextButton.addClassName(nextClassName);
this.fire('nextButton:disabled');
}
},
// Group: Size and Position
/*
Method: computeElementSize
Return elements size in pixel, height or width depends on carousel orientation.
Returns:
an integer value
*/
computeElementSize: function() {
return this.elements.first().getDimensions()[this.dimAttribute];
},
/*
Method: currentIndex
Returns current visible index of a carousel.
For example, a horizontal carousel with image #3 on left will return 3 and with half of image #3 will return 3.5
Don't forget that the first image have an index 0
Returns:
a float value
*/
currentIndex: function() {
return - this.currentPosition() / this.elementSize;
},
/*
Method: currentLastPosition
Returns the current position from the end of the last element. This value is in pixel.
Returns:
an integer value, if no images a present it will return 0
*/
currentLastPosition: function() {
if (this.container.childElements().empty())
return 0;
return this.currentPosition() +
this.elements.last().positionedOffset()[this.posAttribute] +
this.elementSize;
},
/*
Method: currentPosition
Returns the current position in pixel.
Tips: To get the position in elements use currentIndex()
Returns:
an integer value
*/
currentPosition: function() {
return this.container.getNumStyle(this.posAttribute);
},
/*
Method: currentSize
Returns the current size of the carousel in pixel
Returns:
Carousel's size in pixel
*/
currentSize: function() {
return this.container.parentNode.getDimensions()[this.dimAttribute];
},
/*
Method: updateSize
Should be called if carousel size has been changed (usually called with a liquid layout)
Returns:
this
*/
updateSize: function() {
this.nbVisible = this.currentSize() / this.elementSize;
var scrollInc = this.options.scrollInc;
if (scrollInc == "auto")
scrollInc = Math.floor(this.nbVisible);
[ this.previousButton, this.nextButton ].each(function(button) {
if (!button) return;
button.stopObserving("click", button.clickHandler);
button.clickHandler = this.scroll.bind(this, (button == this.nextButton ? -1 : 1) * scrollInc * this.elementSize);
button.observe("click", button.clickHandler);
}, this);
this.checkScroll(this.currentPosition(), true);
this.updateButtons().fire('sizeUpdated');
return this;
}
});
/*
Class: UI.Ajax.Carousel
Gives the AJAX power to carousels. An AJAX carousel :
* Use AJAX to add new elements on the fly
Example:
> new UI.Ajax.Carousel("horizontal_carousel",
> {url: "get-more-elements", elementSize: 250});
*/
UI.Ajax.Carousel = Class.create(UI.Carousel, {
// Group: Options
//
// Notice:
// It also include of all carousel's options
options: {
// Property: elementSize
// Required, it define the size of all elements
elementSize : -1,
// Property: url
// Required, it define the URL used by AJAX carousel to request new elements details
url : null
},
/*
Group: Attributes
Notice:
It also include of all carousel's attributes
Property: elementSize
Size of each elements, it's an integer
Property: endIndex
Index of the last loaded element
Property: hasMore
Flag to define if there's still more elements to load
Property: requestRunning
Define whether a request is processing or not
Property: updateHandler
Callback to update carousel, usually used after request success
Property: url
URL used to request additional elements
*/
/*
Group: Events
List of events fired by an AJAX carousel, it also include of all carousel's custom events
Property: request:started
Fired when the request has just started
Property: request:ended
Fired when the request has succeed
*/
// Group: Constructor
/*
Method: initialize
Constructor function, should not be called directly
Parameters:
element - DOM element
options - (Hash) list of optional parameters
Returns:
this
*/
initialize: function($super, element, options) {
if (!options.url)
throw("url option is required for UI.Ajax.Carousel");
if (!options.elementSize)
throw("elementSize option is required for UI.Ajax.Carousel");
$super(element, options);
this.endIndex = 0;
this.hasMore = true;
// Cache handlers
this.updateHandler = this.update.bind(this);
this.updateAndScrollHandler = function(nbElements, transport, json) {
this.update(transport, json);
this.scroll(nbElements);
}.bind(this);
// Run first ajax request to fill the carousel
this.runRequest.bind(this).defer({parameters: {from: 0, to: Math.floor(this.nbVisible)}, onSuccess: this.updateHandler});
},
// Group: Actions
/*
Method: runRequest
Request the new elements details
Parameters:
options - (Hash) list of optional parameters
Returns:
this
*/
runRequest: function(options) {
this.requestRunning = true;
//alert("Asking for: " + options.parameters.from + " - " + options.parameters.to);
new Ajax.Request(this.options.url, Object.extend({method: "GET"}, options));
this.fire("request:started");
return this;
},
/*
Method: scroll
Scrolls carousel from maximum deltaPixel
Parameters:
deltaPixel - a float
Returns:
this
*/
scroll: function($super, deltaPixel) {
if (this.animating || this.requestRunning)
return this;
var nbElements = (-deltaPixel) / this.elementSize;
// Check if there is not enough
if (this.hasMore && nbElements > 0 && this.currentIndex() + this.nbVisible + nbElements - 1 > this.endIndex) {
var from = this.endIndex + 1;
var to = Math.floor(from + this.nbVisible - 1);
this.runRequest({parameters: {from: from, to: to}, onSuccess: this.updateAndScrollHandler.curry(deltaPixel).bind(this)});
return this;
}
else
$super(deltaPixel);
},
/*
Method: update
Update the carousel
Parameters:
transport - XMLHttpRequest object
json - JSON object
Returns:
this
*/
update: function(transport, json) {
this.requestRunning = false;
this.fire("request:ended");
if (!json)
json = transport.responseJSON;
this.hasMore = json.more;
this.endIndex = Math.max(this.endIndex, json.to);
this.elements = this.container.insert({bottom: json.html}).childElements();
return this.updateButtons();
},
// Group: Size and Position
/*
Method: computeElementSize
Return elements size in pixel
Returns:
an integer value
*/
computeElementSize: function() {
return this.options.elementSize;
},
/*
Method: updateSize
Should be called if carousel size has been changed (usually called with a liquid layout)
Returns:
this
*/
updateSize: function($super) {
var nbVisible = this.nbVisible;
$super();
// If we have enough space for at least a new element
if (Math.floor(this.nbVisible) - Math.floor(nbVisible) >= 1 && this.hasMore) {
if (this.currentIndex() + Math.floor(this.nbVisible) >= this.endIndex) {
var nbNew = Math.floor(this.currentIndex() + Math.floor(this.nbVisible) - this.endIndex);
this.runRequest({parameters: {from: this.endIndex + 1, to: this.endIndex + nbNew}, onSuccess: this.updateHandler});
}
}
return this;
},
updateNextButton: function($super) {
var lastPosition = this.currentLastPosition();
var size = this.currentSize();
var nextClassName = "next_button" + this.options.disabledButtonSuffix;
if (this.nextButton.hasClassName(nextClassName) && lastPosition != size) {
this.nextButton.removeClassName(nextClassName);
this.fire('nextButton:enabled');
}
if (!this.nextButton.hasClassName(nextClassName) && lastPosition == size && !this.hasMore) {
this.nextButton.addClassName(nextClassName);
this.fire('nextButton:disabled');
}
}
});
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