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jquery.ui.slider.js
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jquery.ui.slider.js
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/*!
* jQuery UI Slider 1.9.2
* http://jqueryui.com
*
* Copyright 2012 jQuery Foundation and other contributors
* Released under the MIT license.
* http://jquery.org/license
*
* http://api.jqueryui.com/slider/
*
* Depends:
* jquery.ui.core.js
* jquery.ui.mouse.js
* jquery.ui.widget.js
*/
(function( $, undefined ) {
// number of pages in a slider
// (how many times can you page up/down to go through the whole range)
var numPages = 5;
$.widget( "ui.slider", $.ui.mouse, {
version: "1.9.2",
widgetEventPrefix: "slide",
options: {
animate: false,
distance: 0,
max: 100,
min: 0,
orientation: "horizontal",
range: false,
step: 1,
value: 0,
values: null
},
_create: function() {
var i, handleCount,
o = this.options,
existingHandles = this.element.find( ".ui-slider-handle" ).addClass( "ui-state-default ui-corner-all" ),
handle = "<a class='ui-slider-handle ui-state-default ui-corner-all' href='#'></a>",
handles = [];
this._keySliding = false;
this._mouseSliding = false;
this._animateOff = true;
this._handleIndex = null;
this._detectOrientation();
this._mouseInit();
this.element
.addClass( "ui-slider" +
" ui-slider-" + this.orientation +
" ui-widget" +
" ui-widget-content" +
" ui-corner-all" +
( o.disabled ? " ui-slider-disabled ui-disabled" : "" ) );
this.range = $([]);
if ( o.range ) {
if ( o.range === true ) {
if ( !o.values ) {
o.values = [ this._valueMin(), this._valueMin() ];
}
if ( o.values.length && o.values.length !== 2 ) {
o.values = [ o.values[0], o.values[0] ];
}
}
this.range = $( "<div></div>" )
.appendTo( this.element )
.addClass( "ui-slider-range" +
// note: this isn't the most fittingly semantic framework class for this element,
// but worked best visually with a variety of themes
" ui-widget-header" +
( ( o.range === "min" || o.range === "max" ) ? " ui-slider-range-" + o.range : "" ) );
}
handleCount = ( o.values && o.values.length ) || 1;
for ( i = existingHandles.length; i < handleCount; i++ ) {
handles.push( handle );
}
this.handles = existingHandles.add( $( handles.join( "" ) ).appendTo( this.element ) );
this.handle = this.handles.eq( 0 );
this.handles.add( this.range ).filter( "a" )
.click(function( event ) {
event.preventDefault();
})
.mouseenter(function() {
if ( !o.disabled ) {
$( this ).addClass( "ui-state-hover" );
}
})
.mouseleave(function() {
$( this ).removeClass( "ui-state-hover" );
})
.focus(function() {
if ( !o.disabled ) {
$( ".ui-slider .ui-state-focus" ).removeClass( "ui-state-focus" );
$( this ).addClass( "ui-state-focus" );
} else {
$( this ).blur();
}
})
.blur(function() {
$( this ).removeClass( "ui-state-focus" );
});
this.handles.each(function( i ) {
$( this ).data( "ui-slider-handle-index", i );
});
this._on( this.handles, {
keydown: function( event ) {
var allowed, curVal, newVal, step,
index = $( event.target ).data( "ui-slider-handle-index" );
switch ( event.keyCode ) {
case $.ui.keyCode.HOME:
case $.ui.keyCode.END:
case $.ui.keyCode.PAGE_UP:
case $.ui.keyCode.PAGE_DOWN:
case $.ui.keyCode.UP:
case $.ui.keyCode.RIGHT:
case $.ui.keyCode.DOWN:
case $.ui.keyCode.LEFT:
event.preventDefault();
if ( !this._keySliding ) {
this._keySliding = true;
$( event.target ).addClass( "ui-state-active" );
allowed = this._start( event, index );
if ( allowed === false ) {
return;
}
}
break;
}
step = this.options.step;
if ( this.options.values && this.options.values.length ) {
curVal = newVal = this.values( index );
} else {
curVal = newVal = this.value();
}
switch ( event.keyCode ) {
case $.ui.keyCode.HOME:
newVal = this._valueMin();
break;
case $.ui.keyCode.END:
newVal = this._valueMax();
break;
case $.ui.keyCode.PAGE_UP:
newVal = this._trimAlignValue( curVal + ( (this._valueMax() - this._valueMin()) / numPages ) );
break;
case $.ui.keyCode.PAGE_DOWN:
newVal = this._trimAlignValue( curVal - ( (this._valueMax() - this._valueMin()) / numPages ) );
break;
case $.ui.keyCode.UP:
case $.ui.keyCode.RIGHT:
if ( curVal === this._valueMax() ) {
return;
}
newVal = this._trimAlignValue( curVal + step );
break;
case $.ui.keyCode.DOWN:
case $.ui.keyCode.LEFT:
if ( curVal === this._valueMin() ) {
return;
}
newVal = this._trimAlignValue( curVal - step );
break;
}
this._slide( event, index, newVal );
},
keyup: function( event ) {
var index = $( event.target ).data( "ui-slider-handle-index" );
if ( this._keySliding ) {
this._keySliding = false;
this._stop( event, index );
this._change( event, index );
$( event.target ).removeClass( "ui-state-active" );
}
}
});
this._refreshValue();
this._animateOff = false;
},
_destroy: function() {
this.handles.remove();
this.range.remove();
this.element
.removeClass( "ui-slider" +
" ui-slider-horizontal" +
" ui-slider-vertical" +
" ui-slider-disabled" +
" ui-widget" +
" ui-widget-content" +
" ui-corner-all" );
this._mouseDestroy();
},
_mouseCapture: function( event ) {
var position, normValue, distance, closestHandle, index, allowed, offset, mouseOverHandle,
that = this,
o = this.options;
if ( o.disabled ) {
return false;
}
this.elementSize = {
width: this.element.outerWidth(),
height: this.element.outerHeight()
};
this.elementOffset = this.element.offset();
position = { x: event.pageX, y: event.pageY };
normValue = this._normValueFromMouse( position );
distance = this._valueMax() - this._valueMin() + 1;
this.handles.each(function( i ) {
var thisDistance = Math.abs( normValue - that.values(i) );
if ( distance > thisDistance ) {
distance = thisDistance;
closestHandle = $( this );
index = i;
}
});
// workaround for bug #3736 (if both handles of a range are at 0,
// the first is always used as the one with least distance,
// and moving it is obviously prevented by preventing negative ranges)
if( o.range === true && this.values(1) === o.min ) {
index += 1;
closestHandle = $( this.handles[index] );
}
allowed = this._start( event, index );
if ( allowed === false ) {
return false;
}
this._mouseSliding = true;
this._handleIndex = index;
closestHandle
.addClass( "ui-state-active" )
.focus();
offset = closestHandle.offset();
mouseOverHandle = !$( event.target ).parents().addBack().is( ".ui-slider-handle" );
this._clickOffset = mouseOverHandle ? { left: 0, top: 0 } : {
left: event.pageX - offset.left - ( closestHandle.width() / 2 ),
top: event.pageY - offset.top -
( closestHandle.height() / 2 ) -
( parseInt( closestHandle.css("borderTopWidth"), 10 ) || 0 ) -
( parseInt( closestHandle.css("borderBottomWidth"), 10 ) || 0) +
( parseInt( closestHandle.css("marginTop"), 10 ) || 0)
};
if ( !this.handles.hasClass( "ui-state-hover" ) ) {
this._slide( event, index, normValue );
}
this._animateOff = true;
return true;
},
_mouseStart: function() {
return true;
},
_mouseDrag: function( event ) {
var position = { x: event.pageX, y: event.pageY },
normValue = this._normValueFromMouse( position );
this._slide( event, this._handleIndex, normValue );
return false;
},
_mouseStop: function( event ) {
this.handles.removeClass( "ui-state-active" );
this._mouseSliding = false;
this._stop( event, this._handleIndex );
this._change( event, this._handleIndex );
this._handleIndex = null;
this._clickOffset = null;
this._animateOff = false;
return false;
},
_detectOrientation: function() {
this.orientation = ( this.options.orientation === "vertical" ) ? "vertical" : "horizontal";
},
_normValueFromMouse: function( position ) {
var pixelTotal,
pixelMouse,
percentMouse,
valueTotal,
valueMouse;
if ( this.orientation === "horizontal" ) {
pixelTotal = this.elementSize.width;
pixelMouse = position.x - this.elementOffset.left - ( this._clickOffset ? this._clickOffset.left : 0 );
} else {
pixelTotal = this.elementSize.height;
pixelMouse = position.y - this.elementOffset.top - ( this._clickOffset ? this._clickOffset.top : 0 );
}
percentMouse = ( pixelMouse / pixelTotal );
if ( percentMouse > 1 ) {
percentMouse = 1;
}
if ( percentMouse < 0 ) {
percentMouse = 0;
}
if ( this.orientation === "vertical" ) {
percentMouse = 1 - percentMouse;
}
valueTotal = this._valueMax() - this._valueMin();
valueMouse = this._valueMin() + percentMouse * valueTotal;
return this._trimAlignValue( valueMouse );
},
_start: function( event, index ) {
var uiHash = {
handle: this.handles[ index ],
value: this.value()
};
if ( this.options.values && this.options.values.length ) {
uiHash.value = this.values( index );
uiHash.values = this.values();
}
return this._trigger( "start", event, uiHash );
},
_slide: function( event, index, newVal ) {
var otherVal,
newValues,
allowed;
if ( this.options.values && this.options.values.length ) {
otherVal = this.values( index ? 0 : 1 );
if ( ( this.options.values.length === 2 && this.options.range === true ) &&
( ( index === 0 && newVal > otherVal) || ( index === 1 && newVal < otherVal ) )
) {
newVal = otherVal;
}
if ( newVal !== this.values( index ) ) {
newValues = this.values();
newValues[ index ] = newVal;
// A slide can be canceled by returning false from the slide callback
allowed = this._trigger( "slide", event, {
handle: this.handles[ index ],
value: newVal,
values: newValues
} );
otherVal = this.values( index ? 0 : 1 );
if ( allowed !== false ) {
this.values( index, newVal, true );
}
}
} else {
if ( newVal !== this.value() ) {
// A slide can be canceled by returning false from the slide callback
allowed = this._trigger( "slide", event, {
handle: this.handles[ index ],
value: newVal
} );
if ( allowed !== false ) {
this.value( newVal );
}
}
}
},
_stop: function( event, index ) {
var uiHash = {
handle: this.handles[ index ],
value: this.value()
};
if ( this.options.values && this.options.values.length ) {
uiHash.value = this.values( index );
uiHash.values = this.values();
}
this._trigger( "stop", event, uiHash );
},
_change: function( event, index ) {
if ( !this._keySliding && !this._mouseSliding ) {
var uiHash = {
handle: this.handles[ index ],
value: this.value()
};
if ( this.options.values && this.options.values.length ) {
uiHash.value = this.values( index );
uiHash.values = this.values();
}
this._trigger( "change", event, uiHash );
}
},
value: function( newValue ) {
if ( arguments.length ) {
this.options.value = this._trimAlignValue( newValue );
this._refreshValue();
this._change( null, 0 );
return;
}
return this._value();
},
values: function( index, newValue ) {
var vals,
newValues,
i;
if ( arguments.length > 1 ) {
this.options.values[ index ] = this._trimAlignValue( newValue );
this._refreshValue();
this._change( null, index );
return;
}
if ( arguments.length ) {
if ( Array.isArray( arguments[ 0 ] ) ) {
vals = this.options.values;
newValues = arguments[ 0 ];
for ( i = 0; i < vals.length; i += 1 ) {
vals[ i ] = this._trimAlignValue( newValues[ i ] );
this._change( null, i );
}
this._refreshValue();
} else {
if ( this.options.values && this.options.values.length ) {
return this._values( index );
} else {
return this.value();
}
}
} else {
return this._values();
}
},
_setOption: function( key, value ) {
var i,
valsLength = 0;
if ( Array.isArray( this.options.values ) ) {
valsLength = this.options.values.length;
}
$.Widget.prototype._setOption.apply( this, arguments );
switch ( key ) {
case "disabled":
if ( value ) {
this.handles.filter( ".ui-state-focus" ).blur();
this.handles.removeClass( "ui-state-hover" );
this.handles.prop( "disabled", true );
this.element.addClass( "ui-disabled" );
} else {
this.handles.prop( "disabled", false );
this.element.removeClass( "ui-disabled" );
}
break;
case "orientation":
this._detectOrientation();
this.element
.removeClass( "ui-slider-horizontal ui-slider-vertical" )
.addClass( "ui-slider-" + this.orientation );
this._refreshValue();
break;
case "value":
this._animateOff = true;
this._refreshValue();
this._change( null, 0 );
this._animateOff = false;
break;
case "values":
this._animateOff = true;
this._refreshValue();
for ( i = 0; i < valsLength; i += 1 ) {
this._change( null, i );
}
this._animateOff = false;
break;
case "min":
case "max":
this._animateOff = true;
this._refreshValue();
this._animateOff = false;
break;
}
},
//internal value getter
// _value() returns value trimmed by min and max, aligned by step
_value: function() {
var val = this.options.value;
val = this._trimAlignValue( val );
return val;
},
//internal values getter
// _values() returns array of values trimmed by min and max, aligned by step
// _values( index ) returns single value trimmed by min and max, aligned by step
_values: function( index ) {
var val,
vals,
i;
if ( arguments.length ) {
val = this.options.values[ index ];
val = this._trimAlignValue( val );
return val;
} else {
// .slice() creates a copy of the array
// this copy gets trimmed by min and max and then returned
vals = this.options.values.slice();
for ( i = 0; i < vals.length; i+= 1) {
vals[ i ] = this._trimAlignValue( vals[ i ] );
}
return vals;
}
},
// returns the step-aligned value that val is closest to, between (inclusive) min and max
_trimAlignValue: function( val ) {
if ( val <= this._valueMin() ) {
return this._valueMin();
}
if ( val >= this._valueMax() ) {
return this._valueMax();
}
var step = ( this.options.step > 0 ) ? this.options.step : 1,
valModStep = (val - this._valueMin()) % step,
alignValue = val - valModStep;
if ( Math.abs(valModStep) * 2 >= step ) {
alignValue += ( valModStep > 0 ) ? step : ( -step );
}
// Since JavaScript has problems with large floats, round
// the final value to 5 digits after the decimal point (see #4124)
return parseFloat( alignValue.toFixed(5) );
},
_valueMin: function() {
return this.options.min;
},
_valueMax: function() {
return this.options.max;
},
_refreshValue: function() {
var lastValPercent, valPercent, value, valueMin, valueMax,
oRange = this.options.range,
o = this.options,
that = this,
animate = ( !this._animateOff ) ? o.animate : false,
_set = {};
if ( this.options.values && this.options.values.length ) {
this.handles.each(function( i ) {
valPercent = ( that.values(i) - that._valueMin() ) / ( that._valueMax() - that._valueMin() ) * 100;
_set[ that.orientation === "horizontal" ? "left" : "bottom" ] = valPercent + "%";
$( this ).stop( 1, 1 )[ animate ? "animate" : "css" ]( _set, o.animate );
if ( that.options.range === true ) {
if ( that.orientation === "horizontal" ) {
if ( i === 0 ) {
that.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( { left: valPercent + "%" }, o.animate );
}
if ( i === 1 ) {
that.range[ animate ? "animate" : "css" ]( { width: ( valPercent - lastValPercent ) + "%" }, { queue: false, duration: o.animate } );
}
} else {
if ( i === 0 ) {
that.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( { bottom: ( valPercent ) + "%" }, o.animate );
}
if ( i === 1 ) {
that.range[ animate ? "animate" : "css" ]( { height: ( valPercent - lastValPercent ) + "%" }, { queue: false, duration: o.animate } );
}
}
}
lastValPercent = valPercent;
});
} else {
value = this.value();
valueMin = this._valueMin();
valueMax = this._valueMax();
valPercent = ( valueMax !== valueMin ) ?
( value - valueMin ) / ( valueMax - valueMin ) * 100 :
0;
_set[ this.orientation === "horizontal" ? "left" : "bottom" ] = valPercent + "%";
this.handle.stop( 1, 1 )[ animate ? "animate" : "css" ]( _set, o.animate );
if ( oRange === "min" && this.orientation === "horizontal" ) {
this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( { width: valPercent + "%" }, o.animate );
}
if ( oRange === "max" && this.orientation === "horizontal" ) {
this.range[ animate ? "animate" : "css" ]( { width: ( 100 - valPercent ) + "%" }, { queue: false, duration: o.animate } );
}
if ( oRange === "min" && this.orientation === "vertical" ) {
this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( { height: valPercent + "%" }, o.animate );
}
if ( oRange === "max" && this.orientation === "vertical" ) {
this.range[ animate ? "animate" : "css" ]( { height: ( 100 - valPercent ) + "%" }, { queue: false, duration: o.animate } );
}
}
}
});
}(jQuery));

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