mirror of
https://github.com/jquery/jquery-ui.git
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685 lines
17 KiB
JavaScript
685 lines
17 KiB
JavaScript
/*
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* jQuery UI Slider @VERSION
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*
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* Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
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* Dual licensed under the MIT or GPL Version 2 licenses.
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* http://jquery.org/license
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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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* jquery.ui.core.js
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* jquery.ui.mouse.js
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* jquery.ui.widget.js
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*/
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(function( $, undefined ) {
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// number of pages in a slider
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// (how many times can you page up/down to go through the whole range)
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var numPages = 5;
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$.widget( "ui.slider", $.ui.mouse, {
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widgetEventPrefix: "slide",
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options: {
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animate: false,
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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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_create: function() {
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var self = this,
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o = this.options;
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this._keySliding = false;
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this._mouseSliding = false;
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this._animateOff = true;
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this._handleIndex = null;
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this._detectOrientation();
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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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if ( o.disabled ) {
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this.element.addClass( "ui-slider-disabled ui-disabled" );
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}
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this.range = $([]);
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if ( o.range ) {
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if ( o.range === true ) {
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this.range = $( "<div></div>" );
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if ( !o.values ) {
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o.values = [ this._valueMin(), this._valueMin() ];
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}
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if ( o.values.length && o.values.length !== 2 ) {
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o.values = [ o.values[0], o.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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if ( o.range === "min" || o.range === "max" ) {
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this.range.addClass( "ui-slider-range-" + o.range );
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}
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// note: this isn't the most fittingly semantic framework class for this element,
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// but worked best visually with a variety of themes
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this.range.addClass( "ui-widget-header" );
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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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}
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if ( o.values && o.values.length ) {
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while ( $(".ui-slider-handle", this.element).length < o.values.length ) {
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$( "<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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}
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this.handles = $( ".ui-slider-handle", this.element )
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.addClass( "ui-state-default" +
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" ui-corner-all" );
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this.handle = this.handles.eq( 0 );
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this.handles.add( this.range ).filter( "a" )
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.click(function( event ) {
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event.preventDefault();
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})
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.hover(function() {
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if ( !o.disabled ) {
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$( this ).addClass( "ui-state-hover" );
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}
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}, function() {
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$( this ).removeClass( "ui-state-hover" );
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})
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.focus(function() {
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if ( !o.disabled ) {
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$( ".ui-slider .ui-state-focus" ).removeClass( "ui-state-focus" );
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$( this ).addClass( "ui-state-focus" );
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} else {
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$( this ).blur();
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}
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})
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.blur(function() {
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$( this ).removeClass( "ui-state-focus" );
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});
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this.handles.each(function( i ) {
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$( this ).data( "index.ui-slider-handle", i );
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});
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this.handles
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.keydown(function( event ) {
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var ret = true,
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index = $( this ).data( "index.ui-slider-handle" ),
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allowed,
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curVal,
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newVal,
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step;
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if ( self.options.disabled ) {
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return;
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}
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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.PAGE_UP:
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case $.ui.keyCode.PAGE_DOWN:
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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 $.ui.keyCode.LEFT:
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ret = false;
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if ( !self._keySliding ) {
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self._keySliding = true;
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$( this ).addClass( "ui-state-active" );
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allowed = self._start( event, index );
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if ( allowed === false ) {
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return;
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}
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}
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break;
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}
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step = self.options.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.PAGE_UP:
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newVal = self._trimAlignValue( curVal + ( (self._valueMax() - self._valueMin()) / numPages ) );
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break;
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case $.ui.keyCode.PAGE_DOWN:
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newVal = self._trimAlignValue( curVal - ( (self._valueMax() - self._valueMin()) / numPages ) );
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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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if ( curVal === self._valueMax() ) {
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return;
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}
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newVal = self._trimAlignValue( 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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if ( curVal === self._valueMin() ) {
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return;
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}
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newVal = self._trimAlignValue( curVal - step );
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break;
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}
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self._slide( event, index, newVal );
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return ret;
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})
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.keyup(function( event ) {
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var index = $( this ).data( "index.ui-slider-handle" );
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if ( self._keySliding ) {
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self._keySliding = false;
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self._stop( event, index );
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self._change( event, index );
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$( this ).removeClass( "ui-state-active" );
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}
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});
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this._refreshValue();
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this._animateOff = false;
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},
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destroy: function() {
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this.handles.remove();
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this.range.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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return this;
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},
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_mouseCapture: function( event ) {
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var o = this.options,
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position,
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normValue,
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distance,
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closestHandle,
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self,
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index,
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allowed,
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offset,
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mouseOverHandle;
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if ( o.disabled ) {
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return false;
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}
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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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position = { x: event.pageX, y: event.pageY };
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normValue = this._normValueFromMouse( position );
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distance = this._valueMax() - this._valueMin() + 1;
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self = this;
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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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// workaround for bug #3736 (if both handles of a range are at 0,
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// the first is always used as the one with least distance,
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// and moving it is obviously prevented by preventing negative ranges)
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if( o.range === true && this.values(1) === o.min ) {
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index += 1;
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closestHandle = $( this.handles[index] );
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}
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allowed = this._start( event, index );
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if ( allowed === false ) {
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return false;
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}
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this._mouseSliding = true;
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self._handleIndex = index;
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closestHandle
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.addClass( "ui-state-active" )
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.focus();
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offset = closestHandle.offset();
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mouseOverHandle = !$( event.target ).parents().andSelf().is( ".ui-slider-handle" );
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this._clickOffset = mouseOverHandle ? { left: 0, top: 0 } : {
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left: event.pageX - offset.left - ( closestHandle.width() / 2 ),
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top: event.pageY - offset.top -
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( closestHandle.height() / 2 ) -
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( parseInt( closestHandle.css("borderTopWidth"), 10 ) || 0 ) -
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( parseInt( closestHandle.css("borderBottomWidth"), 10 ) || 0) +
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( parseInt( closestHandle.css("marginTop"), 10 ) || 0)
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};
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if ( !this.handles.hasClass( "ui-state-hover" ) ) {
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this._slide( event, index, normValue );
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}
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this._animateOff = true;
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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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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._mouseSliding = false;
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this._stop( event, this._handleIndex );
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this._change( event, this._handleIndex );
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this._handleIndex = null;
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this._clickOffset = null;
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this._animateOff = false;
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return false;
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},
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_detectOrientation: function() {
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this.orientation = ( this.options.orientation === "vertical" ) ? "vertical" : "horizontal";
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},
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_normValueFromMouse: function( position ) {
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var pixelTotal,
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pixelMouse,
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percentMouse,
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valueTotal,
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valueMouse;
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if ( this.orientation === "horizontal" ) {
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pixelTotal = this.elementSize.width;
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pixelMouse = position.x - this.elementOffset.left - ( this._clickOffset ? this._clickOffset.left : 0 );
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} else {
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pixelTotal = this.elementSize.height;
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pixelMouse = position.y - this.elementOffset.top - ( this._clickOffset ? this._clickOffset.top : 0 );
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}
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percentMouse = ( pixelMouse / pixelTotal );
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if ( percentMouse > 1 ) {
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percentMouse = 1;
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}
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if ( percentMouse < 0 ) {
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percentMouse = 0;
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}
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if ( this.orientation === "vertical" ) {
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percentMouse = 1 - percentMouse;
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}
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valueTotal = this._valueMax() - this._valueMin();
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valueMouse = this._valueMin() + percentMouse * valueTotal;
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return this._trimAlignValue( valueMouse );
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},
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_start: function( event, index ) {
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var uiHash = {
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handle: this.handles[ index ],
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value: this.value()
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};
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if ( this.options.values && this.options.values.length ) {
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uiHash.value = this.values( index );
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uiHash.values = this.values();
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}
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return this._trigger( "start", event, uiHash );
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},
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_slide: function( event, index, newVal ) {
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var otherVal,
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newValues,
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allowed;
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if ( this.options.values && this.options.values.length ) {
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otherVal = this.values( index ? 0 : 1 );
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if ( ( this.options.values.length === 2 && this.options.range === true ) &&
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( ( index === 0 && newVal > otherVal) || ( index === 1 && newVal < otherVal ) )
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) {
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newVal = otherVal;
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}
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if ( newVal !== this.values( index ) ) {
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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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allowed = this._trigger( "slide", event, {
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handle: this.handles[ index ],
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value: newVal,
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values: newValues
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} );
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otherVal = this.values( index ? 0 : 1 );
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if ( allowed !== false ) {
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this.values( index, newVal, true );
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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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allowed = this._trigger( "slide", event, {
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handle: this.handles[ index ],
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value: newVal
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} );
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if ( allowed !== false ) {
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this.value( newVal );
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}
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}
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}
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},
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_stop: function( event, index ) {
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var uiHash = {
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handle: this.handles[ index ],
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value: this.value()
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};
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if ( this.options.values && this.options.values.length ) {
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uiHash.value = this.values( index );
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uiHash.values = this.values();
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}
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this._trigger( "stop", event, uiHash );
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},
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_change: function( event, index ) {
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if ( !this._keySliding && !this._mouseSliding ) {
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var uiHash = {
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handle: this.handles[ index ],
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value: this.value()
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};
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if ( this.options.values && this.options.values.length ) {
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uiHash.value = this.values( index );
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uiHash.values = this.values();
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}
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this._trigger( "change", event, uiHash );
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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.options.value = this._trimAlignValue( newValue );
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this._refreshValue();
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this._change( null, 0 );
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return;
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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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var vals,
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newValues,
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i;
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if ( arguments.length > 1 ) {
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this.options.values[ index ] = this._trimAlignValue( newValue );
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this._refreshValue();
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this._change( null, index );
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return;
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}
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if ( arguments.length ) {
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if ( $.isArray( arguments[ 0 ] ) ) {
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vals = this.options.values;
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newValues = arguments[ 0 ];
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for ( i = 0; i < vals.length; i += 1 ) {
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vals[ i ] = this._trimAlignValue( newValues[ i ] );
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this._change( null, i );
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}
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this._refreshValue();
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} else {
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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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}
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} else {
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return this._values();
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}
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},
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_setOption: function( key, value ) {
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var i,
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valsLength = 0;
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if ( $.isArray( this.options.values ) ) {
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valsLength = this.options.values.length;
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}
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$.Widget.prototype._setOption.apply( this, arguments );
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switch ( key ) {
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case "disabled":
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if ( value ) {
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this.handles.filter( ".ui-state-focus" ).blur();
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this.handles.removeClass( "ui-state-hover" );
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this.handles.attr( "disabled", "disabled" );
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this.element.addClass( "ui-disabled" );
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} else {
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this.handles.removeAttr( "disabled" );
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this.element.removeClass( "ui-disabled" );
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}
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break;
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case "orientation":
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this._detectOrientation();
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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._animateOff = true;
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this._refreshValue();
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this._change( null, 0 );
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this._animateOff = false;
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break;
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case "values":
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this._animateOff = true;
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this._refreshValue();
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for ( i = 0; i < valsLength; i += 1 ) {
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this._change( null, i );
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}
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this._animateOff = false;
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break;
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}
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},
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//internal value getter
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// _value() returns value trimmed by min and max, aligned by step
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_value: function() {
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var val = this.options.value;
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val = this._trimAlignValue( val );
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return val;
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},
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//internal values getter
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// _values() returns array of values trimmed by min and max, aligned by step
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// _values( index ) returns single value trimmed by min and max, aligned by step
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_values: function( index ) {
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var val,
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vals,
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i;
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if ( arguments.length ) {
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val = this.options.values[ index ];
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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 oRange = this.options.range,
|
|
o = this.options,
|
|
self = this,
|
|
animate = ( !this._animateOff ) ? o.animate : false,
|
|
valPercent,
|
|
_set = {},
|
|
lastValPercent,
|
|
value,
|
|
valueMin,
|
|
valueMax;
|
|
|
|
if ( this.options.values && this.options.values.length ) {
|
|
this.handles.each(function( i, j ) {
|
|
valPercent = ( self.values(i) - self._valueMin() ) / ( self._valueMax() - self._valueMin() ) * 100;
|
|
_set[ self.orientation === "horizontal" ? "left" : "bottom" ] = valPercent + "%";
|
|
$( this ).stop( 1, 1 )[ animate ? "animate" : "css" ]( _set, o.animate );
|
|
if ( self.options.range === true ) {
|
|
if ( self.orientation === "horizontal" ) {
|
|
if ( i === 0 ) {
|
|
self.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( { left: valPercent + "%" }, o.animate );
|
|
}
|
|
if ( i === 1 ) {
|
|
self.range[ animate ? "animate" : "css" ]( { width: ( valPercent - lastValPercent ) + "%" }, { queue: false, duration: o.animate } );
|
|
}
|
|
} else {
|
|
if ( i === 0 ) {
|
|
self.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( { bottom: ( valPercent ) + "%" }, o.animate );
|
|
}
|
|
if ( i === 1 ) {
|
|
self.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[ self.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 } );
|
|
}
|
|
}
|
|
}
|
|
|
|
});
|
|
|
|
$.extend( $.ui.slider, {
|
|
version: "@VERSION"
|
|
});
|
|
|
|
}(jQuery));
|