jquery-ui/ui/jquery.ui.spinner.js

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/*
* jQuery UI Spinner @VERSION
*
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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.
* http://jquery.org/license
*
* http://docs.jquery.com/UI/Spinner
*
* Depends:
* jquery.ui.core.js
* jquery.ui.widget.js
* jquery.ui.button.js
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*/
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(function( $ ) {
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function modifier( fn ) {
return function() {
var previous = this.element.val();
fn.apply( this, arguments );
this._refresh();
if ( previous !== this.element.val() ) {
this._trigger( "change" );
}
};
}
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$.widget( "ui.spinner", {
version: "@VERSION",
defaultElement: "<input>",
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widgetEventPrefix: "spin",
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options: {
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culture: null,
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incremental: true,
max: null,
min: null,
numberFormat: null,
page: 10,
step: 1,
change: null,
spin: null,
start: null,
stop: null
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},
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_create: function() {
this._value( this.element.val(), true );
this._draw();
this._bind( this._events );
this._refresh();
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},
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_getCreateOptions: function() {
var options = {},
element = this.element;
$.each( [ "min", "max", "step" ], function( i, option ) {
var value = element.attr( option );
if ( value !== undefined && value.length ) {
options[ option ] = value;
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}
});
return options;
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},
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_events: {
keydown: function( event ) {
if ( this._start( event ) && this._keydown( event ) ) {
event.preventDefault();
}
},
keyup: "_stop",
focus: function() {
this.uiSpinner.addClass( "ui-state-active" );
this.previous = this.element.val();
},
blur: function( event ) {
this._refresh();
this.uiSpinner.removeClass( "ui-state-active" );
if ( this.previous !== this.element.val() ) {
this._trigger( "change", event );
}
},
mousewheel: function( event, delta ) {
if ( !delta ) {
return;
}
if ( !this.spinning && !this._start( event ) ) {
return false;
}
this._spin( (delta > 0 ? 1 : -1) * this.options.step, event );
clearTimeout( this.mousewheelTimer );
this.mousewheelTimer = setTimeout(function() {
if ( this.spinning ) {
this._stop( event );
}
}, 100 );
event.preventDefault();
},
"mousedown .ui-spinner-button": function( event ) {
// ensure focus is on (or stays on) the text field
event.preventDefault();
if ( document.activeElement !== this.element[ 0 ] ) {
this.element.focus();
}
if ( this._start( event ) === false ) {
return;
}
this._repeat( null, $( event.currentTarget ).hasClass( "ui-spinner-up" ) ? 1 : -1, event );
},
"mouseup .ui-spinner-button": "_stop",
"mouseenter .ui-spinner-button": function( event ) {
// button will add ui-state-active if mouse was down while mouseleave and kept down
if ( !$( event.currentTarget ).hasClass( "ui-state-active" ) ) {
return;
}
if ( this._start( event ) === false ) {
return false;
}
this._repeat( null, $( event.currentTarget ).hasClass( "ui-spinner-up" ) ? 1 : -1, event );
},
// TODO: do we really want to consider this a stop?
// shouldn't we just stop the repeater and wait until mouseup before
// we trigger the stop event?
"mouseleave .ui-spinner-button": "_stop"
},
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_draw: function() {
var uiSpinner = this.uiSpinner = this.element
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.addClass( "ui-spinner-input" )
.attr( "autocomplete", "off" )
.wrap( this._uiSpinnerHtml() )
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.parent()
// add buttons
.append( this._buttonHtml() );
this._hoverable( uiSpinner );
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this.element.attr( "role", "spinbutton" );
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// button bindings
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this.buttons = uiSpinner.find( ".ui-spinner-button" )
.attr( "tabIndex", -1 )
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.button()
.removeClass( "ui-corner-all" );
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// IE 6 doesn't understand height: 50% for the buttons
// unless the wrapper has an explicit height
if ( this.buttons.height() === uiSpinner.height() && uiSpinner.height() > 0 ) {
uiSpinner.height( uiSpinner.height() );
}
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// disable spinner if element was already disabled
if ( this.options.disabled ) {
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this.disable();
}
},
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_keydown: function( event ) {
var options = this.options,
keyCode = $.ui.keyCode;
switch ( event.keyCode ) {
case keyCode.UP:
this._repeat( null, 1, event );
return true;
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case keyCode.DOWN:
this._repeat( null, -1, event );
return true;
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case keyCode.PAGE_UP:
this._repeat( null, options.page, event );
return true;
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case keyCode.PAGE_DOWN:
this._repeat( null, -options.page, event );
return true;
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}
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return false;
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},
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_uiSpinnerHtml: function() {
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return "<span class='ui-spinner ui-state-default ui-widget ui-widget-content ui-corner-all'></span>";
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},
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_buttonHtml: function() {
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return "" +
"<a class='ui-spinner-button ui-spinner-up ui-corner-tr'>" +
"<span class='ui-icon ui-icon-triangle-1-n'>&#9650;</span>" +
"</a>" +
"<a class='ui-spinner-button ui-spinner-down ui-corner-br'>" +
"<span class='ui-icon ui-icon-triangle-1-s'>&#9660;</span>" +
"</a>";
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},
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_start: function( event ) {
if ( !this.spinning && this._trigger( "start", event ) === false ) {
return false;
}
if ( !this.counter ) {
this.counter = 1;
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}
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this.spinning = true;
return true;
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},
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_repeat: function( i, steps, event ) {
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i = i || 500;
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clearTimeout( this.timer );
this.timer = this._delay(function() {
this._repeat( 40, steps, event );
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}, i );
this._spin( steps * this.options.step, event );
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},
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_spin: function( step, event ) {
var value = this.value() || 0;
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if ( !this.counter ) {
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this.counter = 1;
}
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value = this._adjustValue( value + step * this._increment( this.counter ) );
if ( !this.spinning || this._trigger( "spin", event, { value: value } ) !== false) {
this._value( value );
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this.counter++;
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}
},
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_increment: function( i ) {
var incremental = this.options.incremental;
if ( incremental ) {
return $.isFunction( incremental ) ?
incremental( i ) :
Math.floor( i*i*i/50000 - i*i/500 + 17*i/200 + 1 );
}
return 1;
},
_precision: function() {
var precision = this._precisionOf( this.options.step );
if ( this.options.min !== null ) {
precision = Math.max( precision, this._precisionOf( this.options.min ) );
}
return precision;
},
_precisionOf: function( num ) {
var str = num.toString(),
decimal = str.indexOf( "." );
return decimal === -1 ? 0 : str.length - decimal - 1;
},
_adjustValue: function( value ) {
var base, aboveMin,
options = this.options;
// make sure we're at a valid step
// - find out where we are relative to the base (min or 0)
base = options.min !== null ? options.min : 0;
aboveMin = value - base;
// - round to the nearest step
aboveMin = Math.round(aboveMin / options.step) * options.step;
// - rounding is based on 0, so adjust back to our base
value = base + aboveMin;
// fix precision from bad JS floating point math
value = parseFloat( value.toFixed( this._precision() ) );
// clamp the value
if ( options.max !== null && value > options.max) {
return options.max;
}
if ( options.min !== null && value < options.min ) {
return options.min;
}
return value;
},
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_stop: function( event ) {
if ( !this.spinning ) {
return;
}
clearTimeout( this.timer );
clearTimeout( this.mousewheelTimer );
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this.counter = 0;
this.spinning = false;
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this._trigger( "stop", event );
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},
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_setOption: function( key, value ) {
this._super( "_setOption", key, value );
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if ( key === "disabled" ) {
if ( value ) {
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this.element.prop( "disabled", true );
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this.buttons.button( "disable" );
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} else {
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this.element.prop( "disabled", false );
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this.buttons.button( "enable" );
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}
}
},
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_setOptions: modifier(function( options ) {
this._super( "_setOptions", options );
this._value( this.element.val() );
}),
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_parse: function( val ) {
if ( typeof val === "string" && val !== "" ) {
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val = window.Globalize && this.options.numberFormat ?
Globalize.parseFloat( val, 10, this.options.culture ) : +val;
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}
return val === "" || isNaN( val ) ? null : val;
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},
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_format: function( value ) {
if ( value === "" ) {
return "";
}
return window.Globalize && this.options.numberFormat ?
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Globalize.format( value, this.options.numberFormat, this.options.culture ) :
value;
},
_refresh: function() {
this.element.attr({
"aria-valuemin": this.options.min,
"aria-valuemax": this.options.max,
// TODO: what should we do with values that can't be parsed?
"aria-valuenow": this._parse( this.element.val() )
});
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},
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// update the value without triggering change
_value: function( value, allowAny ) {
var parsed;
if ( value !== "" ) {
parsed = this._parse( value );
if ( parsed !== null ) {
if ( !allowAny ) {
parsed = this._adjustValue( parsed );
}
value = this._format( parsed );
}
}
this.element.val( value );
this._refresh();
},
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destroy: function() {
this.element
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.removeClass( "ui-spinner-input" )
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.prop( "disabled", false )
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.removeAttr( "autocomplete" )
.removeAttr( "role" )
.removeAttr( "aria-valuemin" )
.removeAttr( "aria-valuemax" )
.removeAttr( "aria-valuenow" );
this._super( "destroy" );
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this.uiSpinner.replaceWith( this.element );
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},
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stepUp: modifier(function( steps ) {
this._stepUp( steps );
}),
_stepUp: function( steps ) {
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this._spin( (steps || 1) * this.options.step );
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},
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stepDown: modifier(function( steps ) {
this._stepDown( steps );
}),
_stepDown: function( steps ) {
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this._spin( (steps || 1) * -this.options.step );
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},
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pageUp: modifier(function( pages ) {
this._stepUp( (pages || 1) * this.options.page );
}),
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pageDown: modifier(function( pages ) {
this._stepDown( (pages || 1) * this.options.page );
}),
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value: function( newVal ) {
if ( !arguments.length ) {
return this._parse( this.element.val() );
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}
modifier( this._value ).call( this, newVal );
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},
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widget: function() {
return this.uiSpinner;
}
});
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}( jQuery ) );