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kendo.slider.js
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(function(f, define){
define([ "./kendo.draganddrop" ], f);
})(function(){
var __meta__ = { // jshint ignore:line
id: "slider",
name: "Slider",
category: "web",
description: "The Slider widget provides a rich input for selecting values or ranges of values.",
depends: [ "draganddrop" ]
};
(function($, undefined) {
var kendo = window.kendo,
Widget = kendo.ui.Widget,
Draggable = kendo.ui.Draggable,
outerWidth = kendo._outerWidth,
outerHeight = kendo._outerHeight,
extend = $.extend,
format = kendo.format,
parse = kendo.parseFloat,
proxy = $.proxy,
isArray = $.isArray,
math = Math,
support = kendo.support,
pointers = support.pointers,
msPointers = support.msPointers,
CHANGE = "change",
SLIDE = "slide",
NS = ".slider",
MOUSE_DOWN = "touchstart" + NS + " mousedown" + NS,
TRACK_MOUSE_DOWN = pointers ? "pointerdown" + NS : (msPointers ? "MSPointerDown" + NS : MOUSE_DOWN),
MOUSE_UP = "touchend" + NS + " mouseup" + NS,
TRACK_MOUSE_UP = pointers ? "pointerup" : (msPointers ? "MSPointerUp" + NS : MOUSE_UP),
MOVE_SELECTION = "moveSelection",
KEY_DOWN = "keydown" + NS,
CLICK = "click" + NS,
MOUSE_OVER = "mouseover" + NS,
FOCUS = "focus" + NS,
BLUR = "blur" + NS,
DRAG_HANDLE = ".k-draghandle",
TRACK_SELECTOR = ".k-slider-track",
TICK_SELECTOR = ".k-tick",
STATE_SELECTED = "k-state-selected",
STATE_FOCUSED = "k-state-focused",
STATE_DEFAULT = "k-state-default",
STATE_DISABLED = "k-state-disabled",
DISABLED = "disabled",
UNDEFINED = "undefined",
TABINDEX = "tabindex",
getTouches = kendo.getTouches;
var SliderBase = Widget.extend({
init: function(element, options) {
var that = this;
Widget.fn.init.call(that, element, options);
options = that.options;
that._isHorizontal = options.orientation == "horizontal";
that._isRtl = that._isHorizontal && kendo.support.isRtl(element);
that._position = that._isHorizontal ? "left" : "bottom";
that._sizeFn = that._isHorizontal ? "width" : "height";
that._outerSize = that._isHorizontal ? outerWidth : outerHeight;
options.tooltip.format = options.tooltip.enabled ? options.tooltip.format || "{0}" : "{0}";
if (options.smallStep <= 0) {
throw new Error('Kendo UI Slider smallStep must be a positive number.');
}
that._createHtml();
that.wrapper = that.element.closest(".k-slider");
that._trackDiv = that.wrapper.find(TRACK_SELECTOR);
that._setTrackDivWidth();
that._maxSelection = that._trackDiv[that._sizeFn]();
that._sliderItemsInit();
that._reset();
that._tabindex(that.wrapper.find(DRAG_HANDLE));
that[options.enabled ? "enable" : "disable"]();
var rtlDirectionSign = kendo.support.isRtl(that.wrapper) ? -1 : 1;
that._keyMap = {
37: step(-1 * rtlDirectionSign * options.smallStep), // left arrow
40: step(-options.smallStep), // down arrow
39: step(+1 * rtlDirectionSign * options.smallStep), // right arrow
38: step(+options.smallStep), // up arrow
35: setValue(options.max), // end
36: setValue(options.min), // home
33: step(+options.largeStep), // page up
34: step(-options.largeStep) // page down
};
kendo.notify(that);
},
events: [
CHANGE,
SLIDE
],
options: {
enabled: true,
min: 0,
max: 10,
smallStep: 1,
largeStep: 5,
orientation: "horizontal",
tickPlacement: "both",
tooltip: { enabled: true, format: "{0}" }
},
_distance: function(){
return round(this.options.max - this.options.min);
},
_resize: function() {
this._setTrackDivWidth();
this.wrapper.find(".k-slider-items").remove();
this._maxSelection = this._trackDiv[this._sizeFn]();
this._sliderItemsInit();
this._refresh();
if (this.options.enabled) {
this.enable(true);
}
},
_sliderItemsInit: function() {
var that = this,
options = that.options;
var sizeBetweenTicks = that._maxSelection / ((options.max - options.min) / options.smallStep);
var pixelWidths = that._calculateItemsWidth(math.floor(that._distance() / options.smallStep));
if (options.tickPlacement != "none" && sizeBetweenTicks >= 2) {
$(this.element).parent().find(".k-slider-items").remove();
that._trackDiv.before(createSliderItems(options, that._distance()));
that._setItemsWidth(pixelWidths);
that._setItemsTitle();
}
that._calculateSteps(pixelWidths);
if (options.tickPlacement != "none" && sizeBetweenTicks >= 2 &&
options.largeStep >= options.smallStep) {
that._setItemsLargeTick();
}
},
getSize: function() {
return kendo.dimensions(this.wrapper);
},
_setTrackDivWidth: function() {
var that = this,
trackDivPosition = parseFloat(that._trackDiv.css(that._isRtl ? "right" : that._position), 10) * 2;
that._trackDiv[that._sizeFn]((that.wrapper[that._sizeFn]() - 2) - trackDivPosition);
},
_setItemsWidth: function(pixelWidths) {
var that = this,
options = that.options,
first = 0,
last = pixelWidths.length - 1,
items = that.wrapper.find(TICK_SELECTOR),
i,
paddingTop = 0,
bordersWidth = 2,
count = items.length,
selection = 0;
for (i = 0; i < count - 2; i++) {
$(items[i + 1])[that._sizeFn](pixelWidths[i]);
}
if (that._isHorizontal) {
$(items[first]).addClass("k-first")[that._sizeFn](pixelWidths[last - 1]);
$(items[last]).addClass("k-last")[that._sizeFn](pixelWidths[last]);
} else {
$(items[last]).addClass("k-first")[that._sizeFn](pixelWidths[last]);
$(items[first]).addClass("k-last")[that._sizeFn](pixelWidths[last - 1]);
}
if (that._distance() % options.smallStep !== 0 && !that._isHorizontal) {
for (i = 0; i < pixelWidths.length; i++) {
selection += pixelWidths[i];
}
paddingTop = that._maxSelection - selection;
paddingTop += parseFloat(that._trackDiv.css(that._position), 10) + bordersWidth;
that.wrapper.find(".k-slider-items").css("padding-top", paddingTop);
}
},
_setItemsTitle: function() {
var that = this,
options = that.options,
items = that.wrapper.find(TICK_SELECTOR),
titleNumber = options.min,
count = items.length,
i = that._isHorizontal && !that._isRtl ? 0 : count - 1,
limit = that._isHorizontal && !that._isRtl ? count : -1,
increment = that._isHorizontal && !that._isRtl ? 1 : -1;
for (; i - limit !== 0 ; i += increment) {
$(items[i]).attr("title", format(options.tooltip.format, round(titleNumber)));
titleNumber += options.smallStep;
}
},
_setItemsLargeTick: function() {
var that = this,
options = that.options,
items = that.wrapper.find(TICK_SELECTOR),
i = 0, item, value;
if (removeFraction(options.largeStep) % removeFraction(options.smallStep) === 0 || that._distance() / options.largeStep >= 3) {
if (!that._isHorizontal && !that._isRtl) {
items = $.makeArray(items).reverse();
}
for (i = 0; i < items.length; i++) {
item = $(items[i]);
value = that._values[i];
var valueWithoutFraction = round(removeFraction(value - this.options.min));
if (valueWithoutFraction % removeFraction(options.smallStep) === 0 && valueWithoutFraction % removeFraction(options.largeStep) === 0) {
item.addClass("k-tick-large")
.html("<span class='k-label'>" + item.attr("title") + "</span>");
if (i !== 0 && i !== items.length - 1) {
item.css("line-height", item[that._sizeFn]() + "px");
}
}
}
}
},
_calculateItemsWidth: function(itemsCount) {
var that = this,
options = that.options,
trackDivSize = parseFloat(that._trackDiv.css(that._sizeFn)) + 1,
distance = that._distance(),
pixelStep = trackDivSize / distance,
itemWidth,
pixelWidths,
i;
if ((distance / options.smallStep) - math.floor(distance / options.smallStep) > 0) {
trackDivSize -= ((distance % options.smallStep) * pixelStep);
}
itemWidth = trackDivSize / itemsCount;
pixelWidths = [];
for (i = 0; i < itemsCount - 1; i++) {
pixelWidths[i] = itemWidth;
}
pixelWidths[itemsCount - 1] = pixelWidths[itemsCount] = itemWidth / 2;
return that._roundWidths(pixelWidths);
},
_roundWidths: function(pixelWidthsArray) {
var balance = 0,
count = pixelWidthsArray.length,
i;
for (i = 0; i < count; i++) {
balance += (pixelWidthsArray[i] - math.floor(pixelWidthsArray[i]));
pixelWidthsArray[i] = math.floor(pixelWidthsArray[i]);
}
balance = math.round(balance);
return this._addAdditionalSize(balance, pixelWidthsArray);
},
_addAdditionalSize: function(additionalSize, pixelWidthsArray) {
if (additionalSize === 0) {
return pixelWidthsArray;
}
//set step size
var step = parseFloat(pixelWidthsArray.length - 1) / parseFloat(additionalSize == 1 ? additionalSize : additionalSize - 1),
i;
for (i = 0; i < additionalSize; i++) {
pixelWidthsArray[parseInt(math.round(step * i), 10)] += 1;
}
return pixelWidthsArray;
},
_calculateSteps: function(pixelWidths) {
var that = this,
options = that.options,
val = options.min,
selection = 0,
distance = that._distance(),
itemsCount = math.ceil(distance / options.smallStep),
i = 1,
lastItem;
itemsCount += (distance / options.smallStep) % 1 === 0 ? 1 : 0;
pixelWidths.splice(0, 0, pixelWidths[itemsCount - 2] * 2);
pixelWidths.splice(itemsCount -1, 1, pixelWidths.pop() * 2);
that._pixelSteps = [selection];
that._values = [val];
if (itemsCount === 0) {
return;
}
while (i < itemsCount) {
selection += (pixelWidths[i - 1] + pixelWidths[i]) / 2;
that._pixelSteps[i] = selection;
val += options.smallStep;
that._values[i] = round(val);
i++;
}
lastItem = distance % options.smallStep === 0 ? itemsCount - 1 : itemsCount;
that._pixelSteps[lastItem] = that._maxSelection;
that._values[lastItem] = options.max;
if (that._isRtl) {
that._pixelSteps.reverse();
that._values.reverse();
}
},
_getValueFromPosition: function(mousePosition, dragableArea) {
var that = this,
options = that.options,
step = math.max(options.smallStep * (that._maxSelection / that._distance()), 0),
position = 0,
halfStep = (step / 2),
i;
if (that._isHorizontal) {
position = mousePosition - dragableArea.startPoint;
if (that._isRtl) {
position = that._maxSelection - position;
}
} else {
position = dragableArea.startPoint - mousePosition;
}
if (that._maxSelection - ((parseInt(that._maxSelection % step, 10) - 3) / 2) < position) {
return options.max;
}
for (i = 0; i < that._pixelSteps.length; i++) {
if (math.abs(that._pixelSteps[i] - position) - 1 <= halfStep) {
return round(that._values[i]);
}
}
},
_getFormattedValue: function(val, drag) {
var that = this,
html = "",
tooltip = that.options.tooltip,
tooltipTemplate,
selectionStart,
selectionEnd;
if (isArray(val)) {
selectionStart = val[0];
selectionEnd = val[1];
} else if (drag && drag.type) {
selectionStart = drag.selectionStart;
selectionEnd = drag.selectionEnd;
}
if (drag) {
tooltipTemplate = drag.tooltipTemplate;
}
if (!tooltipTemplate && tooltip.template) {
tooltipTemplate = kendo.template(tooltip.template);
}
if (isArray(val) || (drag && drag.type)) {
if (tooltipTemplate) {
html = tooltipTemplate({
selectionStart: selectionStart,
selectionEnd: selectionEnd
});
} else {
selectionStart = format(tooltip.format, selectionStart);
selectionEnd = format(tooltip.format, selectionEnd);
html = selectionStart + " - " + selectionEnd;
}
} else {
if (drag) {
drag.val = val;
}
if (tooltipTemplate) {
html = tooltipTemplate({
value: val
});
} else {
html = format(tooltip.format, val);
}
}
return html;
},
_getDraggableArea: function() {
var that = this,
offset = kendo.getOffset(that._trackDiv);
return {
startPoint: that._isHorizontal ? offset.left : offset.top + that._maxSelection,
endPoint: that._isHorizontal ? offset.left + that._maxSelection : offset.top
};
},
_createHtml: function() {
var that = this,
element = that.element,
options = that.options,
inputs = element.find("input");
if (inputs.length == 2) {
inputs.eq(0).prop("value", formatValue(options.selectionStart));
inputs.eq(1).prop("value", formatValue(options.selectionEnd));
} else {
element.prop("value", formatValue(options.value));
}
element.wrap(createWrapper(options, element, that._isHorizontal)).hide();
if (options.showButtons) {
element.before(createButton(options, "increase", that._isHorizontal, that._isRtl))
.before(createButton(options, "decrease", that._isHorizontal, that._isRtl));
}
element.before(createTrack(options, element));
},
_focus: function(e) {
var that = this,
target = e.target,
val = that.value(),
drag = that._drag;
if (!drag) {
if (target == that.wrapper.find(DRAG_HANDLE).eq(0)[0]) {
drag = that._firstHandleDrag;
that._activeHandle = 0;
} else {
drag = that._lastHandleDrag;
that._activeHandle = 1;
}
val = val[that._activeHandle];
}
$(target).addClass(STATE_FOCUSED + " " + STATE_SELECTED);
if (drag) {
that._activeHandleDrag = drag;
drag.selectionStart = that.options.selectionStart;
drag.selectionEnd = that.options.selectionEnd;
drag._updateTooltip(val);
}
},
_focusWithMouse: function(target) {
target = $(target);
var that = this,
idx = target.is(DRAG_HANDLE) ? target.index() : 0;
window.setTimeout(function(){
that.wrapper.find(DRAG_HANDLE)[idx == 2 ? 1 : 0].focus();
}, 1);
that._setTooltipTimeout();
},
_blur: function(e) {
var that = this,
drag = that._activeHandleDrag;
$(e.target).removeClass(STATE_FOCUSED + " " + STATE_SELECTED);
if (drag) {
drag._removeTooltip();
delete that._activeHandleDrag;
delete that._activeHandle;
}
},
_setTooltipTimeout: function() {
var that = this;
that._tooltipTimeout = window.setTimeout(function(){
var drag = that._drag || that._activeHandleDrag;
if (drag) {
drag._removeTooltip();
}
}, 300);
},
_clearTooltipTimeout: function() {
var that = this;
window.clearTimeout(this._tooltipTimeout);
var drag = that._drag || that._activeHandleDrag;
if (drag && drag.tooltipDiv) {
drag.tooltipDiv.stop(true, false).css("opacity", 1);
}
},
_reset: function () {
var that = this,
element = that.element,
formId = element.attr("form"),
form = formId ? $("#" + formId) : element.closest("form");
if (form[0]) {
that._form = form.on("reset", proxy(that._formResetHandler, that));
}
},
min: function(value){
if(!value){
return this.options.min;
}
this.setOptions({"min":value});
},
max: function(value){
if(!value){
return this.options.max;
}
this.setOptions({"max":value});
},
setOptions: function(options) {
Widget.fn.setOptions.call(this, options);
this._sliderItemsInit();
this._refresh();
},
destroy: function () {
if (this._form) {
this._form.off("reset", this._formResetHandler);
}
Widget.fn.destroy.call(this);
}
});
function createWrapper (options, element, isHorizontal) {
var orientationCssClass = isHorizontal ? " k-slider-horizontal" : " k-slider-vertical",
style = options.style ? options.style : element.attr("style"),
cssClasses = element.attr("class") ? (" " + element.attr("class")) : "",
tickPlacementCssClass = "";
if (options.tickPlacement == "bottomRight") {
tickPlacementCssClass = " k-slider-bottomright";
} else if (options.tickPlacement == "topLeft") {
tickPlacementCssClass = " k-slider-topleft";
}
style = style ? " style='" + style + "'" : "";
return "<div class='k-widget k-slider" + orientationCssClass + cssClasses + "'" + style + ">" +
"<div class='k-slider-wrap" + (options.showButtons ? " k-slider-buttons" : "") + tickPlacementCssClass +
"'></div></div>";
}
function createButton (options, type, isHorizontal, isRtl) {
var buttonCssClass = "";
if(isHorizontal) {
if ((!isRtl && type == "increase") || (isRtl && type != "increase")) {
buttonCssClass = "k-i-arrow-60-right";
} else {
buttonCssClass = "k-i-arrow-60-left";
}
} else {
if (type == "increase") {
buttonCssClass = "k-i-arrow-60-up";
} else {
buttonCssClass = "k-i-arrow-60-down";
}
}
return "<a class='k-button k-button-" + type + "' " +
"title='" + options[type + "ButtonTitle"] + "' " +
"aria-label='" + options[type + "ButtonTitle"] + "'>" +
"<span class='k-icon " + buttonCssClass + "'></span></a>";
}
function createSliderItems (options, distance) {
var result = "<ul class='k-reset k-slider-items'>",
count = math.floor(round(distance / options.smallStep)) + 1,
i;
for(i = 0; i < count; i++) {
result += "<li class='k-tick' role='presentation'> </li>";
}
result += "</ul>";
return result;
}
function createTrack (options, element) {
var dragHandleCount = element.is("input") ? 1 : 2,
firstDragHandleTitle = dragHandleCount == 2 ? options.leftDragHandleTitle : options.dragHandleTitle;
return "<div class='k-slider-track'><div class='k-slider-selection'><!-- --></div>" +
"<a href='#' class='k-draghandle' title='" + firstDragHandleTitle + "' role='slider' aria-valuemin='" + options.min + "' aria-valuemax='" + options.max + "' aria-valuenow='" + (dragHandleCount > 1 ? (options.selectionStart || options.min) : options.value || options.min) + "'>Drag</a>" +
(dragHandleCount > 1 ? "<a href='#' class='k-draghandle' title='" + options.rightDragHandleTitle + "'role='slider' aria-valuemin='" + options.min + "' aria-valuemax='" + options.max + "' aria-valuenow='" + (options.selectionEnd || options.max) + "'>Drag</a>" : "") +
"</div>";
}
function step(stepValue) {
return function (value) {
return value + stepValue;
};
}
function setValue(value) {
return function () {
return value;
};
}
function formatValue(value) {
return (value + "").replace(".", kendo.cultures.current.numberFormat["."]);
}
function calculatePrecision(value) {
var number = value.toString();
var precision = 0;
number = number.split(".");
if (number[1]) {
precision = number[1].length;
}
precision = precision > 10 ? 10 : precision;
return precision;
}
function round(value) {
var precision, power;
value = parseFloat(value, 10);
precision = calculatePrecision(value);
power = math.pow(10, precision || 0);
return math.round(value * power) / power;
}
function parseAttr(element, name) {
var value = parse(element.getAttribute(name));
if (value === null) {
value = undefined;
}
return value;
}
function defined(value) {
return typeof value !== UNDEFINED;
}
function removeFraction(value) {
return value * 10000;
}
var Slider = SliderBase.extend({
init: function(element, options) {
var that = this,
dragHandle;
element.type = "text";
options = extend({}, {
value: parseAttr(element, "value"),
min: parseAttr(element, "min"),
max: parseAttr(element, "max"),
smallStep: parseAttr(element, "step")
}, options);
element = $(element);
if (options && options.enabled === undefined) {
options.enabled = !element.is("[disabled]");
}
SliderBase.fn.init.call(that, element, options);
options = that.options;
if (!defined(options.value) || options.value === null) {
options.value = options.min;
element.prop("value", formatValue(options.min));
}
options.value = math.max(math.min(options.value, options.max), options.min);
dragHandle = that.wrapper.find(DRAG_HANDLE);
this._selection = new Slider.Selection(dragHandle, that, options);
that._drag = new Slider.Drag(dragHandle, "", that, options);
},
options: {
name: "Slider",
showButtons: true,
increaseButtonTitle: "Increase",
decreaseButtonTitle: "Decrease",
dragHandleTitle: "drag",
tooltip: { format: "{0:#,#.##}" },
value: null
},
enable: function (enable) {
var that = this,
options = that.options,
clickHandler,
move;
that.disable();
if (enable === false) {
return;
}
that.wrapper
.removeClass(STATE_DISABLED)
.addClass(STATE_DEFAULT);
that.wrapper.find("input").removeAttr(DISABLED);
clickHandler = function (e) {
var touch = getTouches(e)[0];
if (!touch) {
return;
}
var mousePosition = that._isHorizontal ? touch.location.pageX : touch.location.pageY,
dragableArea = that._getDraggableArea(),
target = $(e.target);
if (target.hasClass("k-draghandle")) {
target.addClass(STATE_FOCUSED + " " + STATE_SELECTED);
return;
}
that._update(that._getValueFromPosition(mousePosition, dragableArea));
that._focusWithMouse(e.target);
that._drag.dragstart(e);
e.preventDefault();
};
that.wrapper
.find(TICK_SELECTOR + ", " + TRACK_SELECTOR)
.on(TRACK_MOUSE_DOWN, clickHandler)
.end()
.on(TRACK_MOUSE_DOWN, function() {
$(document.documentElement).one("selectstart", kendo.preventDefault);
})
.on(TRACK_MOUSE_UP, function() {
that._drag._end();
});
that.wrapper
.find(DRAG_HANDLE)
.attr(TABINDEX, 0)
.on(MOUSE_UP, function () {
that._setTooltipTimeout();
})
.on(CLICK, function (e) {
that._focusWithMouse(e.target);
e.preventDefault();
})
.on(FOCUS, proxy(that._focus, that))
.on(BLUR, proxy(that._blur, that));
move = proxy(function (sign) {
var newVal = that._nextValueByIndex(that._valueIndex + (sign * 1));
that._setValueInRange(newVal);
that._drag._updateTooltip(newVal);
}, that);
if (options.showButtons) {
var mouseDownHandler = proxy(function(e, sign) {
this._clearTooltipTimeout();
if (e.which === 1 || (support.touch && e.which === 0)) {
move(sign);
this.timeout = setTimeout(proxy(function () {
this.timer = setInterval(function () {
move(sign);
}, 60);
}, this), 200);
}
}, that);
that.wrapper.find(".k-button")
.on(MOUSE_UP, proxy(function (e) {
this._clearTimer();
that._focusWithMouse(e.target);
}, that))
.on(MOUSE_OVER, function (e) {
$(e.currentTarget).addClass("k-state-hover");
})
.on("mouseout" + NS, proxy(function (e) {
$(e.currentTarget).removeClass("k-state-hover");
this._clearTimer();
}, that))
.eq(0)
.on(MOUSE_DOWN, proxy(function (e) {
mouseDownHandler(e, 1);
}, that))
.click(false)
.end()
.eq(1)
.on(MOUSE_DOWN, proxy(function (e) {
mouseDownHandler(e, -1);
}, that))
.click(kendo.preventDefault);
}
that.wrapper
.find(DRAG_HANDLE)
.off(KEY_DOWN, false)
.on(KEY_DOWN, proxy(this._keydown, that));
options.enabled = true;
},
disable: function () {
var that = this;
that.wrapper
.removeClass(STATE_DEFAULT)
.addClass(STATE_DISABLED);
$(that.element).prop(DISABLED, DISABLED);
that.wrapper
.find(".k-button")
.off(MOUSE_DOWN)
.on(MOUSE_DOWN, function(e) {
e.preventDefault();
$(this).addClass("k-state-active");
})
.off(MOUSE_UP)
.on(MOUSE_UP, function(e) {
e.preventDefault();
$(this).removeClass("k-state-active");
})
.off("mouseleave" + NS)
.on("mouseleave" + NS, kendo.preventDefault)
.off(MOUSE_OVER)
.on(MOUSE_OVER, kendo.preventDefault);
that.wrapper
.find(TICK_SELECTOR + ", " + TRACK_SELECTOR).off(TRACK_MOUSE_DOWN).off(TRACK_MOUSE_UP);
that.wrapper
.find(DRAG_HANDLE)
.attr(TABINDEX, -1)
.off(MOUSE_UP)
.off(KEY_DOWN)
.off(CLICK)
.off(FOCUS)
.off(BLUR);
that.options.enabled = false;
},
_update: function (val) {
var that = this,
change = that.value() != val;
that.value(val);
if (change) {
that.trigger(CHANGE, { value: that.options.value });
}
},
value: function (value) {
var that = this,
options = that.options;
value = round(value);
if (isNaN(value)) {
return options.value;
}
if (value >= options.min && value <= options.max) {
if (options.value != value) {
that.element.prop("value", formatValue(value));
options.value = value;
that._refreshAriaAttr(value);
that._refresh();
}
}
},
_refresh: function () {
this.trigger(MOVE_SELECTION, { value: this.options.value });
},
_refreshAriaAttr: function(value) {
var that = this,
drag = that._drag,
formattedValue;
if (drag && drag._tooltipDiv) {
formattedValue = drag._tooltipDiv.text();
} else {
formattedValue = that._getFormattedValue(value, null);
}
this.wrapper.find(DRAG_HANDLE).attr("aria-valuenow", value).attr("aria-valuetext", formattedValue);
},
_clearTimer: function () {
clearTimeout(this.timeout);
clearInterval(this.timer);
},
_keydown: function (e) {
var that = this;
if (e.keyCode in that._keyMap) {
that._clearTooltipTimeout();
that._setValueInRange(that._keyMap[e.keyCode](that.options.value));
that._drag._updateTooltip(that.value());
e.preventDefault();
}
},
_setValueInRange: function (val) {
var that = this,
options = that.options;
val = round(val);
if (isNaN(val)) {
that._update(options.min);
return;
}
val = math.max(math.min(val, options.max), options.min);
that._update(val);
},
_nextValueByIndex: function (index) {
var count = this._values.length;
if (this._isRtl) {
index = count - 1 - index;
}
return this._values[math.max(0, math.min(index, count - 1))];
},
_formResetHandler: function () {
var that = this,
min = that.options.min;
setTimeout(function () {
var value = that.element[0].value;
that.value(value === "" || isNaN(value) ? min : value);
});
},
destroy: function() {
var that = this;
SliderBase.fn.destroy.call(that);
that.wrapper.off(NS)
.find(".k-button").off(NS)
.end()
.find(DRAG_HANDLE).off(NS)
.end()
.find(TICK_SELECTOR + ", " + TRACK_SELECTOR).off(NS)