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
*/
(function($) {
$.widget('ui.spinner', {
defaultElement: "<input>",
widgetEventPrefix: "spin",
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options: {
incremental: true,
max: null,
min: null,
numberformat: null,
page: 10,
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step: null,
value: null
},
_create: function() {
this._draw();
this._markupOptions();
this._mousewheel();
this._aria();
},
_markupOptions: function() {
var _this = this;
$.each({
min: -Number.MAX_VALUE,
max: Number.MAX_VALUE,
step: 1
}, function(attr, defaultValue) {
if (_this.options[attr] === null) {
var value = _this.element.attr(attr);
_this.options[attr] = typeof value == "string" && value.length > 0 ? _this._parse(value) : defaultValue;
}
});
this.value(this.options.value !== null ? this.options.value : this.element.val() || 0);
},
_draw: function() {
var self = this,
options = self.options;
var uiSpinner = this.uiSpinner = self.element
.addClass('ui-spinner-input')
.attr('autocomplete', 'off')
.wrap(self._uiSpinnerHtml())
.parent()
// add buttons
.append(self._buttonHtml())
// add behaviours
.hover(function() {
if (!options.disabled) {
$(this).addClass('ui-state-hover');
}
self.hovered = true;
}, function() {
$(this).removeClass('ui-state-hover');
self.hovered = false;
});
this.element
.attr( "role", "spinbutton" )
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.bind('keydown.spinner', function(event) {
if (self.options.disabled) {
return;
}
if (self._start(event)) {
return self._keydown(event);
}
return true;
})
.bind('keyup.spinner', function(event) {
if (self.options.disabled) {
return;
}
if (self.spinning) {
self._stop(event);
self._change(event);
}
})
.bind('focus.spinner', function() {
uiSpinner.addClass('ui-state-active');
self.focused = true;
})
.bind('blur.spinner', function(event) {
self.value(self.element.val());
if (!self.hovered) {
uiSpinner.removeClass('ui-state-active');
}
self.focused = false;
});
// button bindings
this.buttons = uiSpinner.find('.ui-spinner-button')
.attr("tabIndex", -1)
.button()
.removeClass("ui-corner-all")
.bind('mousedown', function(event) {
if (self.options.disabled) {
return;
}
if (self._start(event) === false) {
return false;
}
self._repeat(null, $(this).hasClass('ui-spinner-up') ? 1 : -1, event);
})
.bind('mouseup', function(event) {
if (self.options.disabled) {
return;
}
if (self.spinning) {
self._stop(event);
self._change(event);
}
})
.bind("mouseenter", function() {
if (self.options.disabled) {
return;
}
// button will add ui-state-active if mouse was down while mouseleave and kept down
if ($(this).hasClass("ui-state-active")) {
if (self._start(event) === false) {
return false;
}
self._repeat(null, $(this).hasClass('ui-spinner-up') ? 1 : -1, event);
}
})
.bind("mouseleave", function() {
if (self.spinning) {
self._stop(event);
self._change(event);
}
});
// disable spinner if element was already disabled
if (options.disabled) {
this.disable();
}
},
_keydown: function(event) {
var o = this.options,
KEYS = $.ui.keyCode;
switch (event.keyCode) {
case KEYS.UP:
this._repeat(null, 1, event);
return false;
case KEYS.DOWN:
this._repeat(null, -1, event);
return false;
case KEYS.PAGE_UP:
this._repeat(null, this.options.page, event);
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return false;
case KEYS.PAGE_DOWN:
this._repeat(null, -this.options.page, event);
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return false;
case KEYS.ENTER:
this.value(this.element.val());
}
return true;
},
_mousewheel: function() {
// need the delta normalization that mousewheel plugin provides
if (!$.fn.mousewheel) {
return;
}
var self = this;
this.element.bind("mousewheel.spinner", function(event, delta) {
if (self.options.disabled || !delta) {
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return;
}
if (!self.spinning && !self._start(event)) {
return false;
}
self._spin((delta > 0 ? 1 : -1) * self.options.step, event);
clearTimeout(self.timeout);
self.timeout = setTimeout(function() {
if (self.spinning) {
self._stop(event);
self._change(event);
}
}, 100);
event.preventDefault();
});
},
_uiSpinnerHtml: function() {
return '<span class="ui-spinner ui-state-default ui-widget ui-widget-content ui-corner-all"></span>';
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},
_buttonHtml: function() {
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>';
},
_start: function(event) {
if (!this.spinning && this._trigger('start', event) !== false) {
if (!this.counter) {
this.counter = 1;
}
this.spinning = true;
return true;
}
return false;
},
_repeat: function(i, steps, event) {
var self = this;
i = i || 500;
clearTimeout(this.timer);
this.timer = setTimeout(function() {
self._repeat(40, steps, event);
}, i);
self._spin(steps * self.options.step, event);
},
_spin: function(step, event) {
if (!this.counter) {
this.counter = 1;
}
// TODO refactor, maybe figure out some non-linear math
var newVal = this.value() + step * (this.options.incremental &&
this.counter > 20
? this.counter > 100
? this.counter > 200
? 100
: 10
: 2
: 1);
if (this._trigger('spin', event, { value: newVal }) !== false) {
this.value(newVal);
this.counter++;
}
},
_stop: function(event) {
this.counter = 0;
if (this.timer) {
window.clearTimeout(this.timer);
}
this.element.focus();
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this.spinning = false;
this._trigger('stop', event);
},
_change: function(event) {
this._trigger('change', event);
},
_setOption: function(key, value) {
if (key == 'value') {
value = this._parse(value);
if (value < this.options.min) {
value = this.options.min;
}
if (value > this.options.max) {
value = this.options.max;
}
}
if (key == 'disabled') {
if (value) {
this.element.attr("disabled", true);
this.buttons.button("disable");
} else {
this.element.removeAttr("disabled");
this.buttons.button("enable");
}
}
this._super( "_setOption", key, value );
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},
_setOptions: function( options ) {
this._super( "_setOptions", options );
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if ( "value" in options ) {
this._format( this.options.value );
}
this._aria();
},
_aria: function() {
this.element
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.attr('aria-valuemin', this.options.min)
.attr('aria-valuemax', this.options.max)
.attr('aria-valuenow', this.options.value);
},
_parse: function(val) {
var input = val;
if (typeof val == 'string') {
val = $.global && this.options.numberformat ? $.global.parseFloat(val) : +val;
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}
return isNaN(val) ? null : val;
},
_format: function(num) {
this.element.val( $.global && this.options.numberformat ? $.global.format(num, this.options.numberformat) : num );
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},
destroy: function() {
this.element
.removeClass('ui-spinner-input')
.removeAttr('disabled')
.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);
},
stepUp: function(steps) {
this._spin((steps || 1) * this.options.step);
},
stepDown: function(steps) {
this._spin((steps || 1) * -this.options.step);
},
pageUp: function(pages) {
this.stepUp((pages || 1) * this.options.page);
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},
pageDown: 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());
}
this.option('value', newVal);
},
widget: function() {
return this.uiSpinner;
}
});
$.ui.spinner.version = "@VERSION";
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})(jQuery);