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aps/Button

This is a typical HTML button, but with special styling.

Compatibility

All user panels - CP and UX1

Overview

With the aps/Button widget, you can display a usual button which can be temporarily disabled on clicking.

It is possible to display a label, an icon, or both on a button. A label must be specified either by the label (preferable) or by the title (legacy way) property, but only one of the ways must be used at a time.

To prevent a user from clicking a button repeatedly before the operation previously activated by this button is completed, it is recommended to disable the button as explained later.

Find the nested rules for this widget in the recommended Widget Hierarchy section.

Button Types

The button type and disabled property influence the button view as presented in the following diagram.

../../../../../_images/button-types.png

The upper line presents active buttons and the lower line presents the disabled buttons.

Examples

In the following first two examples, you will find how to implement various declaration methods to declare a button. The other examples illustrate properties and methods of the widget.

Widget Loader

The preferable way to specify a text on a button is to assign this text through the label property. Please note that you can also specify text on the button using the title property, but you must not use the both properties together.

RUN DEMO

require(["aps/load", "aps/ready!"],
    function(load){
    	"use strict";
        load(["aps/PageContainer", [
            ["aps/Toolbar", [
                ["aps/Button", { title: "iButton" }]
            ]]
        ]]);
});

Widget Constructor

RUN DEMO

require(["aps/Button", "aps/Toolbar", "aps/PageContainer", "aps/ready!"],
    function(Button, Toolbar, PageContainer){
        "use strict";
        var page = new PageContainer({}, "simpleButton");
        var toolbar = new Toolbar({});
        toolbar.addChild(new Button({ label: "I'm a simple button!" }));
        page.addChild(toolbar);
        page.startup();
});

Disable Button

You may leave a button visible, but not available for clicking by setting the disabled property to true.

RUN DEMO

require(["aps/load", "aps/ready!"],
    function(load){
        "use strict";
        load(["aps/PageContainer", [
            ["aps/Toolbar", [
                [ "aps/Button", {
                    title: "Off",
                    disabled: true
                }]

            ]]
        ]]);
});

On Click Handler

You can add an on-click handler for a button by defining the onClick property:

RUN DEMO

require(["aps/load", "aps/Button", "aps/ready!"],
    function(load, Button) {
        "use strict";
        load(["aps/PageContainer", [
            ["aps/Toolbar", [
                ["aps/Button", {
                    title: "Press me",
                    onClick: function() {
                        alert("I'm pressed!");
                        this.cancel();
                    }
                }]
            ]]
        ]]);
});

After creating a button, irrespective of the way it was declared, you can specify a click handler at any time you like by using the on method with a value of the first argument set to "click". At any time you can get a button object with help of the dijit/registry object.

RUN DEMO

require(["aps/Button", "aps/Toolbar", "aps/PageContainer", "dijit/registry", "aps/ready!"],
    function(Button, Toolbar, PageContainer, registry){
        "use strict";

        var page = new PageContainer({}, "clickButton");
        var toolbar = new Toolbar();
        var clickButton = new Button({
           id:      "clickButtonID",
           label:   "click me!"
        });
        toolbar.addChild(clickButton);
        page.addChild(toolbar);
        page.startup();

        registry.byId("clickButtonID").on("click", function(e) {
            alert("click!");
        });
});

Disable Button on Click

By default, after clicking a button it changes its color to grey, the text on the button also changes and the button itself becomes disabled until the cancel method is called for the button.

The autoBusy, busyLabel, and timeout properties affect this process as described in the Public Properties section.

RUN DEMO

require(["aps/Button", "aps/Toolbar", "aps/PageContainer", "aps/ready!"],
    function(Button, Toolbar, PageContainer) {
        "use strict";

        var page = new PageContainer({}, "maxSettingsButton");
        var toolbar = new Toolbar({});
        var maxSettingsButton = new Button({
            id: "maxSettingsButtonID",
            label: "I'm a button with max number of settings!",
            timeout: 1000,
            busyLabel: "I'm thinking...",
            name: "maxSettingsButton",
            title: "I'm a button"
        });
        toolbar.addChild(maxSettingsButton);
        page.addChild(toolbar);
        page.startup();
});

Public Properties

PROPERTY

TYPE

DEFAULT

DESCRIPTION

autoBusy

boolean

true

If true than a button will be disabled after a click.

busyLabel

string

Please wait

Text displayed while a button is disabled.

disabled

boolean

false

Specifies if the widget will respond to user input.

gridSize

string

undefined

This specifies the widget width that is relevant only for widgets inside Container, FieldSet, or Tiles.

hideFor

string

“”

It is a string containing “md” (hides the property in desktops), or “xs” (hides it in mobiles), or both “md xs” (hides the property regardless of the mode).

iconClass

string

“”

CSS class from.

iconName

string

“”

Icon source - address to an icon file.

isActive

boolean

false

If true use the CSS class ‘Active’.

isBusy

boolean

false

If the widget is busy then this property is true.

isDefault

boolean

false

Use CSS class ‘Action’.

label

string

“”

Text on a button.

requireItems

boolean

false

If “true” the button will be enabled only if ONE or MORE items in the aps/Grid is selected.

requireSingleItem

boolean

false

If “true” the button will be enabled only if ONE item in the aps/Grid is selected.

timeout

number

0

If exists, then it will call the cancel() method to enable the button after a period of time specified by this property.

title

string

“”

Text on a button.

type

string

default

Type of visual format.

visible

boolean

true

If this property value is set to true, then the widget is visible.

autoBusy boolean

If true than a button will be disabled after a click. Default value: true.

busyLabel string

Text displayed while a button is disabled. Default value: “Please wait” (PCP / CCP v1) or “Loading” (CCP v2).

disabled boolean

Specifies if the widget will respond to user input.

Default value: false.

gridSize string

This specifies the widget width that is relevant only for widgets inside Container, FieldSet, or Tiles. In other cases it will be ignored.

gridSize string contains few options with number values (from 1 to 12) separated by spaces, which specify the grid size of the widget in different layouts:

- md - desktop

- xs - phone

For example, gridSize: “md-4 xs-2”.

All values below 1, e.g. “md-0”, will be replaced with the empty string (“”), values above 12, e.g. “md-14”, will be reduced to 12 (“md-12”).

Default value: undefined.

hideFor string

It is a string containing “md” (hides the property in desktops), or “xs” (hides it in mobiles), or both “md xs” (hides the property regardless of the mode). Default value: “”.

iconClass string

CSS class from Font-Awesome to assign to the respective DOMNode and thus make it display an icon. It has no effect without the label or title property. Only for CCP v1. Default value: “”.

iconName string

Icon source - address to an icon file. It has no effect without the label or title property. Only for CCP v1. Default value: “”.

isActive boolean

If true use the CSS class ‘Active’. Default value: false.

isBusy boolean

If the widget is busy then this property is true.

Default value: false.

isDefault boolean

Use CSS class ‘Action’. Default value: false.

label string

Text on a button. The preferred equivalent for the title property. You cannot use both, label and title together. The label cannot be empty in PCP / CCP v1. Default value: “”.

requireItems boolean

If “true” the button will be enabled only if ONE or MORE items in the aps/Grid is selected. Default value: false.

requireSingleItem boolean

If “true” the button will be enabled only if ONE item in the aps/Grid is selected. This property has a priority on requireItems property. Default value: false.

timeout number

If exists, then it will call the cancel() method to enable the button after a period of time specified by this property. Default value: 0.

title string

Text on a button. Equivalent for the “label” property. You shouldn’t use both together. We recommended using the “label” property. Default value: “”.

type string

Type of visual format. Only for CCP v2. Possible values: “primary”, “success”, “info”, “warning”, “danger”, and “link”. Default value: “default”.

visible boolean

If this property value is set to true, then the widget is visible.

Default value: true.

Public Methods

METHOD

RETURN

DESCRIPTION

cancel ()
undefined

Switches the button back to the enabled state

destroy ()
undefined

Destroys the button

get ()
any

Get a property of the Stateful instance

getParents ()
array

Discover and return all parents of the widget

makeBusy ()
aps.button
function

Does a transition between the ‘ready to handle user event’ (isBusy: false) state and the ‘busy’ (isBusy: true) state

placeAt ()
dijit/_widgetbase
function

Place this widget somewhere in the DOM based on standard dojo/dom-construct::place() conventions

resetTimeout (timeout)
undefined

Resets existing timeout and sets a new timeout

set ()
object
function

Set a property of the Stateful instance

setLabel (val)
undefined

Deprecated

startup ()
undefined

Processing after the DOM fragment is added to the document

cancel

Switches the button back to the enabled state. To prevent double submission by a user, aps.Button is switched to the disabled state automatically each time after the user clicks. To switch the button back to the enabled state, call the cancel() method in your onClick handler. Functionality is almost the same as dojox/form/BusyButton.

Return: undefined

destroy

Destroys the button.

Return: undefined

get

Get a property of the Stateful instance. Get a named property of the Stateful object. The property may potentially be retrieved via a getter method in subclasses.

In the base class, this just retrieves the object’s property.

Return: any

getParents

Discover and return all parents of the widget.

Return: array

makeBusy

Does a transition between the ‘ready to handle user event’ (isBusy: false) state and the ‘busy’ (isBusy: true) state. Also disables the button (disabled:true).

Return: aps.button function

placeAt

Place this widget somewhere in the DOM based on standard dojo/dom-construct::place() conventions. A convenience function providing a simple shorthand mechanism to put an existing (or newly created) widget somewhere in the DOM, and allow chaining.

Return: dijit/_widgetbase function

resetTimeout

Resets existing timeout and sets a new timeout.

Return: undefined

ARGUMENT

TYPE

DESCRIPTION

timeout
Int

Time in millisecondsю

set

Set a property of the Stateful instance. Sets named properties of the stateful object and notifies the watchers of the property. A programmatic setter may be defined in subclasses.

Return: object function

setLabel

Deprecated. Use set() instead.

Return: undefined

ARGUMENT

TYPE

DESCRIPTION

val
String

The label of the button.

startup

Processing after the DOM fragment is added to the document. Called after a widget and its children have been created and added to the page and all related widgets have finished their creation cycle, that is after the postCreate() function is successfully completed for each of the related widgets. Note that startup() may be called while the widget is still hidden.

Return: undefined

Public Events

EVENT

RETURN

DESCRIPTION

onClick ()
undefined

The method is called when a user clicks on the widget

onClick

The method is called when a user clicks on the widget.