mirror of
https://github.com/jquery/jquery-ui.git
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362 lines
8.1 KiB
JavaScript
362 lines
8.1 KiB
JavaScript
/*
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* jQuery UI Spinner @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/Spinner
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*
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* Depends:
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* jquery.ui.core.js
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* jquery.ui.widget.js
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*/
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(function( $ ) {
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$.widget( "ui.spinner", {
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version: "@VERSION",
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defaultElement: "<input>",
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widgetEventPrefix: "spin",
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options: {
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incremental: true,
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max: Number.MAX_VALUE,
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min: -Number.MAX_VALUE,
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numberFormat: null,
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page: 10,
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step: 1,
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value: 0,
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change: null,
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spin: null,
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start: null,
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stop: null
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},
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_create: function() {
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this.value( this.options.value );
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this._draw();
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this._mousewheel();
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this._aria();
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},
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_getCreateOptions: function() {
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var options = {},
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element = this.element;
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$.each( [ "min", "max", "step", "value" ], function( i, option ) {
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var value = element.attr( option );
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if ( value !== undefined && value.length ) {
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options[ option ] = value;
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}
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});
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return options;
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},
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_draw: function() {
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var uiSpinner = this.uiSpinner = this.element
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.addClass( "ui-spinner-input" )
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.attr( "autocomplete", "off" )
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.wrap( this._uiSpinnerHtml() )
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.parent()
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// add buttons
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.append( this._buttonHtml() );
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this._hoverable( uiSpinner );
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this.element.attr( "role", "spinbutton" );
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this._bind({
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keydown: function( event ) {
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if ( this._start( event ) && this._keydown( event ) ) {
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event.preventDefault();
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}
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},
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keyup: "_stop",
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focus: function() {
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uiSpinner.addClass( "ui-state-active" );
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this.previous = this.options.value;
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},
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blur: function( event ) {
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// don't clear invalid values on blur
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var value = this.element.val(),
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parsed = this._parse( value );
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this.option( "value", parsed );
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if ( parsed === null ) {
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this.element.val( value );
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}
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uiSpinner.removeClass( "ui-state-active" );
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if ( this.previous !== this.options.value ) {
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this._trigger( "change", event );
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}
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}
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});
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// button bindings
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this.buttons = uiSpinner.find( ".ui-spinner-button" )
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.attr( "tabIndex", -1 )
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.button()
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.removeClass( "ui-corner-all" );
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this._bind( this.buttons, {
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mousedown: function( event ) {
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// ensure focus is on (or stays on) the text field
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event.preventDefault();
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if ( document.activeElement !== this.element[ 0 ] ) {
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this.element.focus();
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}
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if ( this._start( event ) === false ) {
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return;
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}
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this._repeat( null, $( event.currentTarget ).hasClass( "ui-spinner-up" ) ? 1 : -1, event );
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},
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mouseup: "_stop",
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mouseenter: function( event ) {
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// button will add ui-state-active if mouse was down while mouseleave and kept down
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if ( !$( event.currentTarget ).hasClass( "ui-state-active" ) ) {
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return;
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}
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if ( this._start( event ) === false ) {
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return false;
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}
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this._repeat( null, $( event.currentTarget ).hasClass( "ui-spinner-up" ) ? 1 : -1, event );
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},
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// TODO: do we really want to consider this a stop?
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// shouldn't we just stop the repeater and wait until mouseup before
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// we trigger the stop event?
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mouseleave: "_stop"
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});
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// disable spinner if element was already disabled
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if ( this.options.disabled ) {
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this.disable();
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}
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},
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_keydown: function( event ) {
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var options = this.options,
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keyCode = $.ui.keyCode;
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switch ( event.keyCode ) {
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case keyCode.UP:
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this._repeat( null, 1, event );
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return true;
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case keyCode.DOWN:
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this._repeat( null, -1, event );
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return true;
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case keyCode.PAGE_UP:
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this._repeat( null, options.page, event );
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return true;
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case keyCode.PAGE_DOWN:
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this._repeat( null, -options.page, event );
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return true;
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case keyCode.ENTER:
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this.value( this.element.val() );
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}
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return false;
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},
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_mousewheel: function() {
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// need the delta normalization that mousewheel plugin provides
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if ( !$.fn.mousewheel ) {
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return;
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}
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this._bind({
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mousewheel: function( event, delta ) {
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if ( !delta ) {
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return;
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}
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if ( !this.spinning && !this._start( event ) ) {
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return false;
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}
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this._spin( (delta > 0 ? 1 : -1) * this.options.step, event );
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clearTimeout( this.mousewheelTimer );
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this.mousewheelTimer = setTimeout(function() {
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if ( this.spinning ) {
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this._stop( event );
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}
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}, 100 );
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event.preventDefault();
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}
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});
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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 "" +
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"<a class='ui-spinner-button ui-spinner-up ui-corner-tr'>" +
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"<span class='ui-icon ui-icon-triangle-1-n'>▲</span>" +
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"</a>" +
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"<a class='ui-spinner-button ui-spinner-down ui-corner-br'>" +
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"<span class='ui-icon ui-icon-triangle-1-s'>▼</span>" +
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"</a>";
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},
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_start: function( event ) {
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if ( !this.spinning && this._trigger( "start", event ) === false ) {
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return false;
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}
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if ( !this.counter ) {
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this.counter = 1;
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}
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this.spinning = true;
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return true;
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},
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_repeat: function( i, steps, event ) {
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var that = this;
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i = i || 500;
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clearTimeout( this.timer );
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this.timer = setTimeout(function() {
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that._repeat( 40, steps, event );
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}, i );
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this._spin( steps * this.options.step, event );
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},
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_spin: function( step, event ) {
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if ( !this.counter ) {
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this.counter = 1;
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}
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// TODO refactor, maybe figure out some non-linear math
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// x*x*x/50000 - x*x/500 + 17*x/200 + 1
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var newVal = this.value() + step * (this.options.incremental &&
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this.counter > 20
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? this.counter > 100
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? this.counter > 200
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? 100
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: 10
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: 2
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: 1);
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// clamp the new value
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newVal = this._trimValue( newVal );
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if ( this._trigger( "spin", event, { value: newVal } ) !== false) {
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this.value( newVal );
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this.counter++;
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}
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},
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_trimValue: function( value ) {
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var options = this.options;
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if ( value > options.max) {
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return options.max;
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}
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if ( value < options.min ) {
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return options.min;
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}
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return value;
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},
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_stop: function( event ) {
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if ( !this.spinning ) {
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return;
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}
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clearTimeout( this.timer );
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clearTimeout( this.mousewheelTimer );
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this.counter = 0;
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this.spinning = false;
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this._trigger( "stop", event );
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},
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_setOption: function( key, value ) {
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if ( key === "value") {
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value = this._trimValue( this._parse(value) );
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}
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if ( key === "disabled" ) {
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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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}
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this._super( "_setOption", key, value );
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},
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_setOptions: function( options ) {
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this._super( "_setOptions", options );
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if ( "value" in options || "numberFormat" in options ) {
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this._format( this.options.value );
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}
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this._aria();
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},
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_aria: function() {
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this.element.attr({
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"aria-valuemin": this.options.min,
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"aria-valuemax": this.options.max,
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"aria-valuenow": this.options.value
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});
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},
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_parse: function( val ) {
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if ( typeof val === "string" ) {
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val = $.global && this.options.numberFormat ? $.global.parseFloat( val ) : +val;
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}
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return isNaN( val ) ? null : val;
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},
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_format: function( num ) {
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this.element.val( $.global && this.options.numberFormat ? $.global.format( num, this.options.numberFormat ) : num );
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},
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destroy: function() {
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this.element
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.removeClass( "ui-spinner-input" )
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.prop( "disabled", false )
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.removeAttr( "autocomplete" )
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.removeAttr( "role" )
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.removeAttr( "aria-valuemin" )
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.removeAttr( "aria-valuemax" )
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.removeAttr( "aria-valuenow" );
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this._super( "destroy" );
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this.uiSpinner.replaceWith( this.element );
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},
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stepUp: function( steps ) {
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this._spin( (steps || 1) * this.options.step );
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},
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stepDown: function( steps ) {
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this._spin( (steps || 1) * -this.options.step );
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},
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pageUp: function( pages ) {
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this.stepUp( (pages || 1) * this.options.page );
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},
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pageDown: function( pages ) {
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this.stepDown( (pages || 1) * this.options.page );
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},
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value: function( newVal ) {
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if ( !arguments.length ) {
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return this._parse( this.element.val() );
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}
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this.option( "value", newVal );
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},
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widget: function() {
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return this.uiSpinner;
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}
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});
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}( jQuery ) );
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