shubhadownloader
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JavaScript
/**
* A field with a pair of up/down spinner buttons. This class is not normally instantiated directly,
* instead it is subclassed and the {@link #onSpinUp} and {@link #onSpinDown} methods are implemented
* to handle when the buttons are clicked. A good example of this is the {@link Ext.form.field.Number}
* field which uses the spinner to increment and decrement the field's value by its
* {@link Ext.form.field.Number#step step} config value.
*
* For example:
*
* @example
* Ext.define('Ext.ux.CustomSpinner', {
* extend: 'Ext.form.field.Spinner',
* alias: 'widget.customspinner',
*
* // override onSpinUp (using step isn't neccessary)
* onSpinUp: function() {
* var me = this;
* if (!me.readOnly) {
* var val = parseInt(me.getValue().split(' '), 10)||0; // gets rid of " Pack", defaults to zero on parse failure
* me.setValue((val + me.step) + ' Pack');
* }
* },
*
* // override onSpinDown
* onSpinDown: function() {
* var val, me = this;
* if (!me.readOnly) {
* var val = parseInt(me.getValue().split(' '), 10)||0; // gets rid of " Pack", defaults to zero on parse failure
* if (val <= me.step) {
* me.setValue('Dry!');
* } else {
* me.setValue((val - me.step) + ' Pack');
* }
* }
* }
* });
*
* Ext.create('Ext.form.FormPanel', {
* title: 'Form with SpinnerField',
* bodyPadding: 5,
* width: 350,
* renderTo: Ext.getBody(),
* items:[{
* xtype: 'customspinner',
* fieldLabel: 'How Much Beer?',
* step: 6
* }]
* });
*
* By default, pressing the up and down arrow keys will also trigger the onSpinUp and onSpinDown methods;
* to prevent this, set `{@link #keyNavEnabled} = false`.
*/
Ext.define('Ext.form.field.Spinner', {
extend: 'Ext.form.field.Trigger',
alias: 'widget.spinnerfield',
alternateClassName: 'Ext.form.Spinner',
requires: ['Ext.util.KeyNav'],
trigger1Cls: Ext.baseCSSPrefix + 'form-spinner-up',
trigger2Cls: Ext.baseCSSPrefix + 'form-spinner-down',
/**
* @cfg {Boolean} spinUpEnabled
* Specifies whether the up spinner button is enabled. Defaults to true. To change this after the component is
* created, use the {@link #setSpinUpEnabled} method.
*/
spinUpEnabled: true,
/**
* @cfg {Boolean} spinDownEnabled
* Specifies whether the down spinner button is enabled. Defaults to true. To change this after the component is
* created, use the {@link #setSpinDownEnabled} method.
*/
spinDownEnabled: true,
/**
* @cfg {Boolean} keyNavEnabled
* Specifies whether the up and down arrow keys should trigger spinning up and down. Defaults to true.
*/
keyNavEnabled: true,
/**
* @cfg {Boolean} mouseWheelEnabled
* Specifies whether the mouse wheel should trigger spinning up and down while the field has focus.
* Defaults to true.
*/
mouseWheelEnabled: true,
/**
* @cfg {Boolean} repeatTriggerClick
* Whether a {@link Ext.util.ClickRepeater click repeater} should be attached to the spinner buttons.
* Defaults to true.
*/
repeatTriggerClick: true,
/**
* @method
* @protected
* This method is called when the spinner up button is clicked, or when the up arrow key is pressed if
* {@link #keyNavEnabled} is true. Must be implemented by subclasses.
*/
onSpinUp: Ext.emptyFn,
/**
* @method
* @protected
* This method is called when the spinner down button is clicked, or when the down arrow key is pressed if
* {@link #keyNavEnabled} is true. Must be implemented by subclasses.
*/
onSpinDown: Ext.emptyFn,
triggerTpl: '<td style="{triggerStyle}">' +
'<div class="' + Ext.baseCSSPrefix + 'trigger-index-0 ' + Ext.baseCSSPrefix + 'form-trigger ' + Ext.baseCSSPrefix + 'form-spinner-up" role="button"></div>' +
'<div class="' + Ext.baseCSSPrefix + 'trigger-index-1 ' + Ext.baseCSSPrefix + 'form-trigger ' + Ext.baseCSSPrefix + 'form-spinner-down" role="button"></div>' +
'</td>' +
'</tr>',
initComponent: function() {
this.callParent();
this.addEvents(
/**
* @event spin
* Fires when the spinner is made to spin up or down.
* @param {Ext.form.field.Spinner} this
* @param {String} direction Either 'up' if spinning up, or 'down' if spinning down.
*/
'spin',
/**
* @event spinup
* Fires when the spinner is made to spin up.
* @param {Ext.form.field.Spinner} this
*/
'spinup',
/**
* @event spindown
* Fires when the spinner is made to spin down.
* @param {Ext.form.field.Spinner} this
*/
'spindown'
);
},
/**
* @private
* Override.
*/
onRender: function() {
var me = this,
triggers;
me.callParent(arguments);
triggers = me.triggerEl;
/**
* @property {Ext.Element} spinUpEl
* The spinner up button element
*/
me.spinUpEl = triggers.item(0);
/**
* @property {Ext.Element} spinDownEl
* The spinner down button element
*/
me.spinDownEl = triggers.item(1);
me.triggerCell = me.spinUpEl.parent();
// Set initial enabled/disabled states
me.setSpinUpEnabled(me.spinUpEnabled);
me.setSpinDownEnabled(me.spinDownEnabled);
// Init up/down arrow keys
if (me.keyNavEnabled) {
me.spinnerKeyNav = new Ext.util.KeyNav(me.inputEl, {
scope: me,
up: me.spinUp,
down: me.spinDown
});
}
// Init mouse wheel
if (me.mouseWheelEnabled) {
me.mon(me.bodyEl, 'mousewheel', me.onMouseWheel, me);
}
},
getSubTplMarkup: function() {
var me = this,
field = Ext.form.field.Base.prototype.getSubTplMarkup.apply(me, arguments);
return '<table id="' + me.id + '-triggerWrap" class="' + Ext.baseCSSPrefix + 'form-trigger-wrap" cellpadding="0" cellspacing="0">' +
'<tbody>' +
'<tr><td id="' + me.id + '-inputCell" class="' + Ext.baseCSSPrefix + 'form-trigger-input-cell">' + field + '</td>' +
me.getTriggerMarkup() +
'</tbody></table>';
},
getTriggerMarkup: function() {
var me = this,
hideTrigger = (me.readOnly || me.hideTrigger);
return me.getTpl('triggerTpl').apply({
triggerStyle: 'width:' + me.triggerWidth + (hideTrigger ? 'px;display:none' : 'px')
});
},
/**
* Get the total width of the spinner button area.
* @return {Number} The total spinner button width
*/
getTriggerWidth: function() {
var me = this,
totalTriggerWidth = 0;
if (me.triggerWrap && !me.hideTrigger && !me.readOnly) {
totalTriggerWidth = me.triggerWidth;
}
return totalTriggerWidth;
},
/**
* @private
* Handles the spinner up button clicks.
*/
onTrigger1Click: function() {
this.spinUp();
},
/**
* @private
* Handles the spinner down button clicks.
*/
onTrigger2Click: function() {
this.spinDown();
},
// private
// Handle trigger mouse up gesture; refocuses the input element upon end of spin.
onTriggerWrapMouseup: function() {
this.inputEl.focus();
},
/**
* Triggers the spinner to step up; fires the {@link #spin} and {@link #spinup} events and calls the
* {@link #onSpinUp} method. Does nothing if the field is {@link #disabled} or if {@link #spinUpEnabled}
* is false.
*/
spinUp: function() {
var me = this;
if (me.spinUpEnabled && !me.disabled) {
me.fireEvent('spin', me, 'up');
me.fireEvent('spinup', me);
me.onSpinUp();
}
},
/**
* Triggers the spinner to step down; fires the {@link #spin} and {@link #spindown} events and calls the
* {@link #onSpinDown} method. Does nothing if the field is {@link #disabled} or if {@link #spinDownEnabled}
* is false.
*/
spinDown: function() {
var me = this;
if (me.spinDownEnabled && !me.disabled) {
me.fireEvent('spin', me, 'down');
me.fireEvent('spindown', me);
me.onSpinDown();
}
},
/**
* Sets whether the spinner up button is enabled.
* @param {Boolean} enabled true to enable the button, false to disable it.
*/
setSpinUpEnabled: function(enabled) {
var me = this,
wasEnabled = me.spinUpEnabled;
me.spinUpEnabled = enabled;
if (wasEnabled !== enabled && me.rendered) {
me.spinUpEl[enabled ? 'removeCls' : 'addCls'](me.trigger1Cls + '-disabled');
}
},
/**
* Sets whether the spinner down button is enabled.
* @param {Boolean} enabled true to enable the button, false to disable it.
*/
setSpinDownEnabled: function(enabled) {
var me = this,
wasEnabled = me.spinDownEnabled;
me.spinDownEnabled = enabled;
if (wasEnabled !== enabled && me.rendered) {
me.spinDownEl[enabled ? 'removeCls' : 'addCls'](me.trigger2Cls + '-disabled');
}
},
/**
* @private
* Handles mousewheel events on the field
*/
onMouseWheel: function(e) {
var me = this,
delta;
if (me.hasFocus) {
delta = e.getWheelDelta();
if (delta > 0) {
me.spinUp();
}
else if (delta < 0) {
me.spinDown();
}
e.stopEvent();
}
},
onDestroy: function() {
Ext.destroyMembers(this, 'spinnerKeyNav', 'spinUpEl', 'spinDownEl');
this.callParent();
}
});