mirror of
https://github.com/jquery/jquery-ui.git
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472 lines
11 KiB
JavaScript
472 lines
11 KiB
JavaScript
/*
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* jQuery UI Slider @VERSION
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*
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* Copyright (c) 2009 AUTHORS.txt (http://ui.jquery.com/about)
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* Dual licensed under the MIT (MIT-LICENSE.txt)
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* and GPL (GPL-LICENSE.txt) licenses.
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*
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* http://docs.jquery.com/UI/Slider
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*
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* Depends:
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* ui.core.js
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*/
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(function($) {
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$.widget("ui.slider", $.extend({}, $.ui.mouse, {
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_init: function() {
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var self = this;
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this._keySliding = false;
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this._handleIndex = null;
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this._mouseInit();
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this.element
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.addClass("ui-slider"
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+ " ui-slider-" + this._orientation()
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+ " ui-widget"
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+ " ui-widget-content"
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+ " ui-corner-all");
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this.range = $([]);
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if (this.options.range) {
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if (this.options.range === true) {
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this.range = $('<div></div>');
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if (!this.options.values) this.options.values = [this._valueMin(), this._valueMin()];
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if (this.options.values.length && this.options.values.length != 2) {
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this.options.values = [this.options.values[0], this.options.values[0]];
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}
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} else {
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this.range = $('<div></div>');
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}
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this.range
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.appendTo(this.element)
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.addClass("ui-slider-range"
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+ " ui-widget-header");
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var oRange = this.options.range, oOrientation = this._orientation();
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(oRange == "min") && (oOrientation == "horizontal") && this.range.css({ left : 0 });
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(oRange == "max") && (oOrientation == "horizontal") && this.range.css({ right : 0 });
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(oRange == "min") && (oOrientation == "vertical") && this.range.css({ bottom : 0 });
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(oRange == "max") && (oOrientation == "vertical") && this.range.css({ top : 0 });
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}
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if ($(".ui-slider-handle", this.element).length == 0)
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$('<a href="#"></a>')
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.appendTo(this.element)
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.addClass("ui-slider-handle");
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if (this.options.values && this.options.values.length) {
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while ($(".ui-slider-handle", this.element).length < this.options.values.length)
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$('<a href="#"></a>')
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.appendTo(this.element)
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.addClass("ui-slider-handle");
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}
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this.handles = $(".ui-slider-handle", this.element)
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.addClass("ui-state-default"
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+ " ui-corner-all");
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this.handle = this.handles.eq(0);
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this.handles.add(this.range).filter("a")
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.click(function(event) { event.preventDefault(); })
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.hover(function() { $(this).addClass('ui-state-hover'); }, function() { $(this).removeClass('ui-state-hover'); })
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.focus(function() { self.handles.removeClass('ui-state-focus'); $(this).addClass('ui-state-focus'); })
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.blur(function() { $(this).removeClass('ui-state-focus'); });
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this.handles.each(function(i) {
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$(this).data("index.ui-slider-handle", i);
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});
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this.handles.keydown(function(event) {
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var index = $(this).data("index.ui-slider-handle");
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if (self.options.disabled)
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return;
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switch (event.keyCode) {
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case $.ui.keyCode.HOME:
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case $.ui.keyCode.END:
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case $.ui.keyCode.UP:
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case $.ui.keyCode.RIGHT:
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case $.ui.keyCode.DOWN:
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case $.ui.keyCode.LEFT:
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if (!self._keySliding) {
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self._keySliding = true;
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$(this).addClass("ui-state-active");
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self._start(event);
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}
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break;
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}
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var curVal, newVal, step = self._step();
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if (self.options.values && self.options.values.length) {
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curVal = newVal = self.values(index);
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} else {
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curVal = newVal = self.value();
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}
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switch (event.keyCode) {
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case $.ui.keyCode.HOME:
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newVal = self._valueMin();
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break;
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case $.ui.keyCode.END:
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newVal = self._valueMax();
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break;
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case $.ui.keyCode.UP:
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case $.ui.keyCode.RIGHT:
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newVal = curVal + step;
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break;
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case $.ui.keyCode.DOWN:
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case $.ui.keyCode.LEFT:
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newVal = curVal - step;
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break;
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}
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self._slide(event, index, newVal);
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}).keyup(function(event) {
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if (self._keySliding) {
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self._stop(event);
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self._change(event);
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self._keySliding = false;
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$(this).removeClass("ui-state-active");
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}
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});
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this._refreshValue();
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},
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destroy: function() {
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this.handles.remove();
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this.element
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.removeClass("ui-slider"
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+ " ui-slider-horizontal"
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+ " ui-slider-vertical"
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+ " ui-slider-disabled"
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+ " ui-widget"
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+ " ui-widget-content"
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+ " ui-corner-all")
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.removeData("slider")
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.unbind(".slider");
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this._mouseDestroy();
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},
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_mouseCapture: function(event) {
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var o = this.options;
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if (o.disabled)
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return false;
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this._start(event);
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this.elementSize = {
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width: this.element.outerWidth(),
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height: this.element.outerHeight()
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};
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this.elementOffset = this.element.offset();
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var position = { x: event.pageX, y: event.pageY };
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var normValue = this._normValueFromMouse(position);
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var distance = this._valueMax(), closestHandle;
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var self = this, index;
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this.handles.each(function(i) {
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var thisDistance = Math.abs(normValue - self.values(i));
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if (distance > thisDistance) {
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distance = thisDistance;
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closestHandle = $(this);
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index = i;
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}
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});
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self._handleIndex = index;
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closestHandle
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.addClass("ui-state-active")
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.focus();
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this._slide(event, index, normValue);
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return true;
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},
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_mouseStart: function(event) {
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return true;
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},
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_mouseDrag: function(event) {
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var position = { x: event.pageX, y: event.pageY };
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var normValue = this._normValueFromMouse(position);
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this._slide(event, this._handleIndex, normValue);
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return false;
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},
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_mouseStop: function(event) {
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this.handles.removeClass("ui-state-active");
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this._stop(event);
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this._change(event);
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this._handleIndex = null;
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return false;
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},
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_normValueFromMouse: function(position) {
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var pixelTotal, pixelMouse;
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if ('horizontal' == this._orientation()) {
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pixelTotal = this.elementSize.width;
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pixelMouse = position.x - this.elementOffset.left;
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} else {
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pixelTotal = this.elementSize.height;
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pixelMouse = position.y - this.elementOffset.top;
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}
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var percentMouse = (pixelMouse / pixelTotal);
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if (percentMouse > 1) percentMouse = 1;
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if (percentMouse < 0) percentMouse = 0;
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if ('vertical' == this._orientation())
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percentMouse = 1 - percentMouse;
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var valueTotal = this._valueMax() - this._valueMin(),
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valueMouse = percentMouse * valueTotal,
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valueMouseModStep = valueMouse % this.options.step,
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normValue = this._valueMin() + valueMouse - valueMouseModStep;
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if (valueMouseModStep > (this.options.step / 2))
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normValue += this.options.step;
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return normValue;
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},
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_start: function(event) {
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this._trigger("start", event, {
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value: this.value()
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});
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},
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_slide: function(event, index, newVal) {
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if (this.options.values && this.options.values.length) {
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var handle = this.handles[index];
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var otherVal = this.values(index ? 0 : 1);
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if ((index == 0 && newVal >= otherVal) || (index == 1 && newVal <= otherVal))
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newVal = otherVal;
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if (newVal != this.values(index)) {
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var newValues = this.values();
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newValues[index] = newVal;
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// A slide can be canceled by returning false from the slide callback
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var allowed = this._trigger("slide", event, {
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handle: handle,
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value: newVal,
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values: newValues
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});
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var otherVal = this.values(index ? 0 : 1);
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if (allowed !== false) {
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this.values(index, newVal);
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}
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}
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} else {
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if (newVal != this.value()) {
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// A slide can be canceled by returning false from the slide callback
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var allowed = this._trigger("slide", event, {
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value: newVal
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});
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if (allowed !== false)
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this._setData('value', newVal);
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}
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}
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},
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_stop: function(event) {
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this._trigger("stop", event, {
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value: this.value()
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});
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},
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_change: function(event) {
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this._trigger("change", event, {
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value: this.value()
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});
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},
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value: function(newValue) {
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if (arguments.length) {
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this._setData("value", newValue);
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this._change();
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}
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return this._value();
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},
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values: function(index, newValue) {
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if (arguments.length > 1) {
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this.options.values[index] = newValue;
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this._refreshValue();
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this._change();
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}
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if (arguments.length) {
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if (this.options.values && this.options.values.length) {
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return this._values(index);
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} else {
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return this.value();
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}
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} else {
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return this._values();
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}
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},
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_setData: function(key, value) {
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$.widget.prototype._setData.apply(this, arguments);
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switch (key) {
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case 'orientation':
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this.element
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.removeClass("ui-slider-horizontal ui-slider-vertical")
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.addClass("ui-slider-" + this._orientation());
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this._refreshValue();
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break;
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case 'value':
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this._refreshValue();
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break;
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}
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},
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_orientation: function() {
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var orientation = this.options.orientation;
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if (orientation != 'horizontal' && orientation != 'vertical')
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orientation = 'horizontal';
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return orientation;
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},
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_step: function() {
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var step = this.options.step;
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return step;
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},
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_value: function() {
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var val = this.options.value;
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if (val < this._valueMin()) val = this._valueMin();
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if (val > this._valueMax()) val = this._valueMax();
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return val;
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},
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_values: function(index) {
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if (arguments.length) {
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var val = this.options.values[index];
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if (val < this._valueMin()) val = this._valueMin();
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if (val > this._valueMax()) val = this._valueMax();
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return val;
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} else {
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return this.options.values;
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}
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},
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_valueMin: function() {
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var valueMin = this.options.min;
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return valueMin;
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},
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_valueMax: function() {
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var valueMax = this.options.max;
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return valueMax;
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},
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_refreshValue: function() {
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var oRange = this.options.range, oOrientation = this._orientation();
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if (this.options.values && this.options.values.length) {
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var self = this, vp0, vp1;
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this.handles.each(function(i, j) {
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var valPercent = (self.values(i) - self._valueMin()) / (self._valueMax() - self._valueMin()) * 100;
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$(this).css(oOrientation == 'horizontal' ? 'left' : 'bottom', valPercent + '%');
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if (self.options.range === true) {
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if (oOrientation == 'horizontal') {
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(i == 0) && self.range.css('left', valPercent + '%');
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(i == 1) && self.range.css('width', (valPercent - lastValPercent) + '%');
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} else {
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(i == 0) && self.range.css('bottom', (valPercent) + '%');
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(i == 1) && self.range.css('height', (valPercent - lastValPercent) + '%');
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}
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}
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lastValPercent = valPercent;
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});
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} else {
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var valPercent = (this.value() - this._valueMin()) / (this._valueMax() - this._valueMin()) * 100;
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this.handle.css(oOrientation == 'horizontal' ? 'left' : 'bottom', valPercent + '%');
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(oRange == "min") && (oOrientation == "horizontal") && this.range.css({ left: 0, width: valPercent + '%' });
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(oRange == "max") && (oOrientation == "horizontal") && this.range.css({ left: valPercent + '%', width: (100 - valPercent) + '%' });
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(oRange == "min") && (oOrientation == "vertical") && this.range.css({ top: (100 - valPercent) + '%', height: valPercent + '%' });
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(oRange == "max") && (oOrientation == "vertical") && this.range.css({ bottom: valPercent + '%', height: (100 - valPercent) + '%' });
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}
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}
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}));
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$.extend($.ui.slider, {
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getter: "value values",
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version: "@VERSION",
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eventPrefix: "slide",
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defaults: {
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delay: 0,
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distance: 0,
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max: 100,
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min: 0,
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orientation: 'horizontal',
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range: false,
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step: 1,
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value: 0,
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values: null
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}
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});
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})(jQuery);
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