Radio input description

The Radio input control is intended to be used along other Radio inputs to get one possible value (from various of them) from the user. If you just one a "true" or "false" value from the user, you can consider to use the Checkbox control or the Switch control. There are other specific input controls like the Email input, Phone input, Color input, etc.

There is a Radio sample app included with the installation of DecSoft App Builder. Take a look to see this control in action!

Radio input CSS rules

This control has a default style, and, some control JavaScript properties (see below), can also changes the control style, not to mention the Classes property, that you can use to establish one or more CSS classes to be applied to the control.

In addition to that style, you can also set custom CSS rules for the control by using the IDE controls style inspector. If this is not enough, you can include any number of CSS stylesheets in the app by using the app files manager.

If you want to use CSS stylesheets, you need to know how to refer to the control, so take a look at the Runtime selectors help topic.

Radio input at designtime

The Radio input control put at your disposition the below designtime properties or variables. Designtime means here that these properties are only available in designtime and not in runtime.

Radio input at runtime

The Radio input control put at your disposition the below runtime properties or variables. You can set almost all these variables in designtime, and, they are also available to be use when the app is running. Note that we named here these variables in a capitalized way, because is like you can see it in the designtime control's inspector, however, at runtime we use the lower camel case way.

Radio input events

The Radio input control put at your disposition the below events handlers:

Radio input designtime properties

Radio input Top property

Designtime. Integer variable. The Top property stores the top position of the control in pixels. The pixels are relative to the app view, dialog or frame, and, is used "as is" if the app have the "Scale" app option is set to "false". Remember that this control property is only for designtime and is not available in runtime.

Radio input Left property

Designtime. Integer variable. The Left property stores the left position of the control in pixels. The pixels are relative to the app view, dialog or frame, and, is used "as is" if the app have the "Scale" app option is set to "false". Remember that this control property is only for designtime and is not available in runtime.

Radio input Width property

Designtime. Integer variable. The Width property stores the width of the control in pixels. The pixels are relative to the app view, dialog or frame, and, is used "as is" if the app have the "Scale" app option is set to "false". Remember that this control property is only for designtime and is not available in runtime.

Radio input Height property

Designtime. Integer variable. The Height property stores the height of the control in pixels. The pixels are relative to the app view, dialog or frame, and, is used "as is" if the app have the "Scale" app option is set to "false". Remember that this control property is only for designtime and is not available in runtime.

Radio input Locked property

Designtime. Boolean variable. The Locked property determines if the control can be moved or resized in app view designer or not. Set a "false" value mean the control can be moved and resized. Set a "true" value (by default) mean the control cannot be moved nor resized. Remember that this control property is only for designtime and is not available in runtime.

Radio input runtime properties

Radio input Name property

Runtime. String variable. The Name control property stores the name of the Radio input control as you set in designtime. The Name property value must be unique for the same app view, dialog or frame, that is, it's possible to have more than one "radio1" in the app, if that controls resides in different app views, dialogs or frames. Note that you must consider this variable as read only: change the name of a control in runtime can cause unexpected results.

Radio input Event property

Runtime. Mixed variable. The Event control property stores the "event" variable received in all the control events. This variable can contain the target (HTML element of the control) that fire the event and more useful stuff.

Radio input Title property

Runtime. String variable. The Title control property stores some small but descriptive text, mainly to be used to be show that text when the user place the mouse cursor into the control.

Radio input Classes property

Runtime. String variable. The Classes control property stores one or more additionals CSS classes (space separated) to be applied to the control.

Radio input Hidden property

Runtime. Boolean variable. The Hidden control property determines if the control appear visible to the user or not. Set to "true" to hide the control, or to "false" to show the control (by default).

Radio input Disabled property

Runtime. Boolean variable. The Disabled control property determines if the control appear disabled to the user or not. Set to "true" to disable the control, or to "false" to enable the control (by default).

Radio input Value property

Runtime. String variable. The Value control property stores the specific value of the Radio input control, and is used to set the Group variable, which can be shared by other Radio input controls.

Radio input Group property

Runtime. String variable. The Group control property is set in runtime with the Value of one of the "grouped" Radio input controls. It's your duty to initialize a "Group" variable when the app start, for example, using the app Mounted event.

The above code set a "carsRadioGroup" variable available into the app's store "app.store.carsRadioGroup". This variable is set to the value of a "grouped" Radio input control when that Radio input control is checked by the user.

So we can set the Group property of various Radio inputs to the value "carsRadioGroup". If we execute the above code, we are checking programatically the Radio input with the value "ferrari", and, anyway, when the user check one of these Radio input controls, the "carsRadioGroup" variable stores the value of the checked Radio input, and the others are automatically unchecked.

Take a look at the Radio sample app to see various Radio input controls working.

Radio input Text property

Runtime. String variable. The Text control property stores the text that appear in the control at the right of the radio editbox.

Radio input TabIndex property

Runtime. Number variable. The TabIndex control property determines how the browser / platform must deal with the control when the user press the TAB key. The default value for this variable is "0" (zero), which means that the control should be focusable in sequential keyboard navigation, but its order is defined by the document's order.

You can set this variable to a value of "-1", which means that the element should not be reachable via sequential keyboard navigation, but could be focused with JavaScript or visually. It's mostly useful to create accessible widgets with JavaScript.

A positive value for this variable means the element should be focusable in sequential keyboard navigation, with its order defined by the value of the number. That is, tabindex="4" would be focused before tabindex="5", but after tabindex="3". If multiple elements share the same positive tabindex value, their order relative to each other follows their position in the document source.

You can use the TabIndex order dialog to set this variable.

Radio input events

Radio input Change event

The Change event handler is fired when the user changes the value and then release the focus (changing to another, for example) of the input control. See also the available events variables.

Radio input Focus event

The Focus event handler is fired when the when the Radio input control receive the user focus. This event is the partner of the Blur event that you can see below. See also the available events variables.

Radio input Blur event

The Blur event handler is fired when the when the Radio input control loss the user focus. This event is the partner of the Focus event that you can see above. See also the available events variables.

Radio input Click event

The Click event handler is fired when the user click or tap into the Radio input control. See also the available events variables.

Radio input DblClick event

The DblClick (Double Click) event handler is fired when the user double click or double tap into the Radio input control. See also the available events variables.

Radio input MouseUp event

The MouseUp event handler is fired when the user up the mouse into the Radio input control. See also the available events variables.

Radio input MouseDown event

The MouseDown event handler is fired when the user down the mouse into the Radio input control. See also the available events variables.

Radio input MouseMove event

The MouseMove event handler is fired when the user move the mouse into the Radio input control. See also the available events variables.

Radio input MouseEnter event

The MouseEnter event handler is fired when the user enter the mouse into the Radio input control. See also the available events variables.

Radio input MouseLeave event

The MouseLeave event handler is fired when the user leave the mouse from the Radio input control. See also the available events variables.

Radio input ContextMenu event

The ContextMenu event handler is fired when the browser must shown the context menu of the the Radio input control, which occur when the user click with the right mouse button into the Radio input control. See also the available events variables.

Radio input events variables

The below JavaScript variables are available in all the referred Radio input control events handlers:

Name Type Description
event Mixed This variable is received in almost all control events. You can use this variable to stop the propagation of the event, to access the HTML element who fire the event and more.
self Object Stores the control object. This is a shortcut to the control variable, and it's available since we are talking about specific control events.
view Object

Stores the current app view or dialog. This variable allow us to access to that view or dialog properties and methods and also their controls properties and methods. For example, you can access to a control properties using the variable "view.yourControlName", suposing the control is named "yourControlName".

views Object Stores all the loaded app views. Note that loaded views mean that the app views has been previously show to the user. It's possible to access to the app view controls properties like "views.view1.yourControlName", suposing the view is named "view1" and the control is named "yourControlName". In the same way we can access to other controls of the view and to other loaded views and their controls.
frames Object Stores all the app frames. You can use this variable to access to all the app frames and their controls.
dialogs Object Stores all the app dialogs. You can use this variable to access to all the app dialogs and their controls.
app Object Stores all the app properties and methods. You can use this variable to access to all the app properties and app methods.