Component: ojSlider

Oracle® JavaScript Extension Toolkit (JET)
3.2.0

E87541-01

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Binding Attributes
Sub-ID's

oj. ojSlider extends oj.editableValue

Version:
  • 3.2.0

JET Slider Component

Description: The ojSlider component enhances an HTML input element into an interactive slider.

The type option is used to set the slider to either a single-thumb or a range slider. Single thumb sliders are defined by setting the type option to either "single", "fromMin", or "fromMax". The type option defaults to "fromMin", which will style the value bar from the minimum value to the slider thumb. A range slider (a slider with two thumbs) is defined by setting type to range". The value bar is styled between the thumbs for a range slider.
  • To create a single thumb slider:
  • Either use the default type, or set the type option to either "single", "fromMin", or "fromMax". Set the value option to a number. The value should be between the min and max option values.
  • To create a range slider (slider with two thumbs):
  • set the type option to "range", and set the value option to an array of two numbers. The first array value must be less than or equal to the second array value, and both values must be between the min and max option values.

The step option of the slider specifies the interval between thumb stops. For example, if min is set to 0 and max is set to 10, a step value of 2 would allow the thumb to be positioned at 0, 2, 4, 6, 8, and 10.

The orientation option defaults to "horizontal". Set orientation to "vertical" for a vertical slider (one where the thumb travels along the vertical axis).

Set the disabled option true to display a slider that displays a value but does not allow interaction.

For horizontal sliders, use the slider component's rootAttributes to set the width. For vertical sliders, use style attributes on the input tag to set the slider height. These conventions are recommended in order to achieve the best messaging format.

Touch End User Information

Target Gesture Action
Slider Bar Tap Reposition the thumb.
Slider Thumb Swipe Reposition the thumb.
Label's help icon Tap If there is a help source URL on the anchor icon, navigate to the Help Source URL. Otherwise, show the help definition text in a popup.
Press & Hold Show help definition text in a popup.

Keyboard End User Information

The JET slider supports keyboard actions for thumb movement:

Target Key Use
Slider Tab Places focus on the slider component. If hints, title or messages exist in a notewindow, pop up the notewindow.
Slider RightArrow Scrolls right on a horizontal slider, scrolls up on a vertical slider.
Slider LeftArrow Scrolls left on a horizontal slider, scrolls down on a vertical slider.
Slider UpArrow Scrolls right on a horizontal slider, scrolls up on a vertical slider.
Slider DownArrow Scrolls left on a horizontal slider, scrolls down on a vertical slider.
Slider PageUp Scrolls one page right on a horizontal slider, scrolls one page up on a vertical slider.
A page is defined as 20% of the range of the slider.
Slider PageDown Scrolls one page left on a horizontal slider, scrolls one page down on a vertical slider.
Slider End Scrolls to the right end on a horizontal slider, scrolls to the bottom on a vertical slider.
Slider Home Scrolls to the left end on a horizontal slider, scrolls to the top on a vertical slider.
Label's help icon Enter Go the Help Source URL.
Tab In Show help definition text.

Accessibility

The slider component is accessible - it sets and maintains the appropriate aria- attributes, including aria-valuenow, aria-valuemax, aria-valuemin and aria-orientation.

It is up to the application developer to associate the label with the slider input component. There are several ways to do this:

  • Set an aria-labelledby on the slider input to reference the label id.
  • Set an id on the slider input, and also set the for attribute on the label to be the input's id.
  • Set an aria-label on the slider input.
  • Use Javascript to update the aria-labelledby attributes on the slider thumbs.
The slider component will then use this information in the input tag to create the appropriate aria attribute on the slider thumb(s).

In addition, the slider thumb element can be accessed programmatically. This approach may be necessary to ensure accessibility conformance. For example, if the slider controls another element that is in a remote area of the page, then the aria-controls attribute for the slider thumb should be set.

Consider an example where you may need to set additional attributes for accessibility reasons. Suppose there is another component that is in a remote area of the page that controlled by the slider. Assume that the id of the remote element is "idOfRemoteElement". Below we use the getNodeBySubId() method to access the thumb element in order to set the aria-controls attribute of the thumb to point to the the id ("idOfRemoteElement") of the remote html element:


 $(document).ready(function() {
    ko.applyBindings(...)
    var thumb0 =
       $('#inputslider-id').find('.oj-slider-thumb')[0];
    $(thumb0).attr("aria-controls", "idOfRemoteElement");
 });

See also the oj-focus-highlight discussion.

Styling

Several CSS classes are defined to implement the slider's style. The key classes are the following:

Class Description
oj-slider Top level slider class.
oj-slider-thumb Styles the slider thumb.
oj-slider-bar Styles the slider bar. The slider bar spans the full width of a horizontal slider.
oj-slider-bar-value Styles the slider bar value. The slider bar value is the colored (blue by default) part of the slider bar.
oj-slider-horizontal This class is present when the slider is oriented horizontally.
oj-slider-vertical This class is present when the slider is oriented vertically.
oj-focus-highlight Under normal circumstances this class is applied automatically. It is documented here for the rare cases that an app developer needs per-instance control.

The oj-focus-highlight class applies focus styling that may not be desirable when the focus results from pointer interaction (touch or mouse), but which is needed for accessibility when the focus occurs by a non-pointer mechanism, for example keyboard or initial page load.

The application-level behavior for this component is controlled in the theme by the $focusHighlightPolicy SASS variable; however, note that this same variable controls the focus highlight policy of many components and patterns. The values for the variable are:

  • nonPointer: oj-focus-highlight is applied only when focus is not the result of pointer interaction. Most themes default to this value.
  • all: oj-focus-highlight is applied regardless of the focus mechanism.
  • none: oj-focus-highlight is never applied. This behavior is not accessible, and is intended for use when the application wishes to use its own event listener to precisely control when the class is applied (see below). The application must ensure the accessibility of the result.

To change the behavior on a per-instance basis, the application can set the SASS variable as desired and then use event listeners to toggle this class as needed.

Initializer

.ojSlider(options)

Creates an ojSlider component
Parameters:
Name Type Argument Description
options Object <optional>
a map of option-value pairs to set on the component
Source:
Examples

Initialize component using widget API

<input id="spin" type="text"/>
$("#slider").ojSlider({'value': 10, 'max':100, 'min':0, 'step':2}); $("#slider").ojSlider({'option', 'value', 10});

Using knockout, value, min, max bind to observables - salary, salaryMax, salaryMin

<input id="foo" data-bind="ojComponent:
  {component: 'ojSlider', value: salary, min:salaryMin, max:salaryMax, step:5}"/>

Options

contextMenu :Element|Array.<Element>|string|jQuery|NodeList

Identifies the JET Menu that the component should launch as a context menu on right-click, Shift-F10, Press & Hold, or component-specific gesture. If specified, the browser's native context menu will be replaced by the specified JET Menu.

The value can be an HTML element, JQ selector, JQ object, NodeList, or array of elements. In all cases, the first indicated element is used.

To specify a JET context menu on a DOM element that is not a JET component, see the ojContextMenu binding.

To make the page semantically accurate from the outset, applications are encouraged to specify the context menu via the standard HTML5 syntax shown in the below example. When the component is initialized, the context menu thus specified will be set on the component.

There is no restriction on the order in which the JET Menu and the referencing component are initialized. However, when specifying the Menu via the HTML attribute, the referenced DOM element must be in the document at the time that the referencing component is initialized.

After create time, the contextMenu option should be set via this API, not by setting the DOM attribute.

The application can register a listener for the Menu's beforeOpen event. The listener can cancel the launch via event.preventDefault(), or it can customize the menu contents by editing the menu DOM directly, and then calling refresh() on the Menu.

To help determine whether it's appropriate to cancel the launch or customize the menu, the beforeOpen listener can use component API's to determine which table cell, chart item, etc., is the target of the context menu. See the JSDoc and demos of the individual components for details. Keep in mind that any such logic must work whether the context menu was launched via right-click, Shift-F10, Press & Hold, or component-specific touch gesture.

Default Value:
  • null
Inherited From:
Source:
Examples

Initialize a JET component with a context menu:

// via recommended HTML5 syntax:
<div id="myComponent" contextmenu="myMenu" data-bind="ojComponent: { ... }>

// via JET initializer (less preferred) :
// Foo is the component, e.g., InputText, InputNumber, Select, etc.
$( ".selector" ).ojFoo({ "contextMenu": "#myMenu" });

Get or set the contextMenu option, after initialization:

// getter
// Foo is the component, e.g., InputText, InputNumber, Select, etc.
var menu = $( ".selector" ).ojFoo( "option", "contextMenu" );

// setter
// Foo is the component, e.g., InputText, InputNumber, Select, etc.
$( ".selector" ).ojFoo( "option", "contextMenu", ".my-marker-class" );

Set a JET context menu on an ordinary HTML element:

<a href="#" id="myAnchor" contextmenu="myMenu" data-bind="ojContextMenu: {}">Some text

disabled :boolean

Whether the component is disabled. The element's disabled property is used as its initial value if it exists, when the option is not explicitly set. When neither is set, disabled defaults to false.
Default Value:
  • false
Source:
Example

Initialize component with disabled option:

$(".selector").ojSlider({"disabled": true});

displayOptions :Object|undefined

Display options for auxilliary content that determines where it should be displayed in relation to the component.

The types of messaging content for which display options can be configured include messages, converterHint, validatorHint and title.
The display options for each type is specified either as an array of strings or a string. When an array is specified the first display option takes precedence over the second and so on.

JET editable components set defaults that apply to the entire app/page. It is possible to override the defaults on a per instance basis as explained in the examples below or change defaults for the entire application using oj.Components#setDefaultOptions method. It is much easier to change the defaults using setDefaultOptions once rather than putting the displayOptions option on every component instance.

When displayOptions changes due to programmatic intervention, the component updates its display to reflect the updated choices. For example, if 'title' property goes from 'notewindow' to 'none' then it no longer shows in the notewindow.

A side note: title and message detail text can include formatted HTML text, whereas hints and message summary text cannot. If you use formatted text, it should be accessible and make sense to the user if formatting wasn't there. To format the title, you could do this:

<html>Enter <b>at least</b> 6 characters</html>

Properties:
Name Type Argument Description
converterHint Array | string <optional>
supported values are 'placeholder', 'notewindow', 'none'. The default value is ['placeholder', 'notewindow']. When there is already a placeholder set on the component, the converter hint falls back to display type of 'notewindow'. To change the default value you can do this -
E.g. {'displayOptions: {'converterHint': ['none']}}
validatorHint Array | string <optional>
supported values are 'notewindow', 'none'. To change the default value you can do this -
{'displayOptions: {'validatorHint': ['none']}}
messages Array | string <optional>
supported values are 'notewindow', 'inline', 'none'. The default is 'inline'. To change the default value you can do this -
E.g. {'displayOptions: {'messages': 'none'}}
title Array | string <optional>
supported values are 'notewindow', 'none'. To change the default value you can do this -
E.g. {'displayOptions: {'title': 'none'}}
Default Value:
  • {
      'messages': ['inline'],
      'converterHint': ['placeholder', 'notewindow'],
      'validatorHint': ['notewindow'],
      'title': ['notewindow']
    }
Since:
  • 0.7
Inherited From:
Source:
Examples

Override default values for displayOptions for messages for the entire application:

// messages will be shown in the notewindow for the application.
oj.Components.setDefaultOptions({
   'editableValue':
   {
     'displayOptions': 
     {
       'messages': ['notewindow']
     }
   }
});

Override default values for displayOptions for one component instance:

// In this example, the instance of ojFoo changes its displayOptions from the defaults.
// The 'converterHint' is none, the 'validatorHint' is none and the 'title' is none,
// so only the 'messages' will display in its default state.
// For most apps, you will want to change the displayOptions app-wide
// for all EditableValue components, so you should use the
// oj.Components#setDefaultOptions function instead (see previous example).
//
// Foo is InputText, InputNumber, Select, etc.
$(".selector").ojFoo("option", "displayOptions", {
  'converterHint': 'none',
  'validatorHint': 'none',
  'title' : 'none'
});

help :Object.<string, string>

Help information that goes on the label. When help is set on the input component, then help information is added to the input's label.

The properties supported on the help option are:

Properties:
Name Type Argument Description
definition string <optional>
this is the help definition text. It is what shows up when the user hovers over the help icon, or tabs into the help icon, or press and holds the help icon on a mobile device. No formatted text is available for the help definition attribute. The default value is null.
source string <optional>
this is the help source url. If present, the help icon's anchor's target is this source. For security reasons we only support urls with protocol http: or https:. If the url doesn't comply we ignore it and throw an error. The default value is null. Pass in an encoded URL since we do not encode the URL.
Default Value:
  • {help : {definition :null, source: null}}
Inherited From:
Source:
Examples

Initialize the input with the help definition and external url information:

// Foo is InputText, InputNumber, Select, etc.
$( ".selector" ).ojFoo({ "help": {"definition":"some help definition, "source":"some external url" } });

Set the help option, after initialization:

// setter
// Foo is InputText, InputNumber, Select, etc.
$( ".selector" ).ojFoo( "option", "help", {"definition":"fill out the name", "source":"http:\\www.oracle.com" } );

help.definition :string

help definition text. See the top-level help option for details.

Default Value:
  • null
Inherited From:
Source:
Example

Get or set the help.definition sub-option, after initialization:

// getter
var definitionText = $( ".selector" ).ojFoo( "option", "help.definition" );

// setter:
$( ".selector" ).ojFoo( "option", "help.definition", "Enter your name" );

help.source :string

help source url. See the top-level help option for details.

Default Value:
  • null
Inherited From:
Source:
Example

Get or set the help.source sub-option, after initialization:

// getter
var helpSource = $( ".selector" ).ojFoo( "option", "help.source" );

// setter:
$( ".selector" ).ojFoo( "option", "help.source", "www.abc.com" );

max :number

The maximum value of the slider. The max must not be less than the min, or else an Error is thrown during initialization.
Default Value:
  • null
Source:
Examples

Initialize the slider with the max option specified:

$( ".selector" ).ojSlider( { "max": 100 } );

Set the max to a number inside of quotes; this is valid and will be coerced to a number, -100 in this example:

$( ".selector" ).ojSlider( { "max": "-100" } );

messagesCustom :Array|undefined

List of messages an app would add to the component when it has business/custom validation errors that it wants the component to show. When this option is set the messagesShown option is also updated and the message shows to the user right away. To clear the custom message, set code class="prettyprint">messagesCustom back to an empty array.
Each message in the array is either an instance of oj.Message or an object that duck types it. See oj.Message for details.

An optionChange event is triggered every time this option value changes.

Default Value:
  • empty array when no option is set.
Since:
  • 0.7
Inherited From:
Source:
See:
Examples

Get the current list of app messages using messagesCustom option:

// Foo is InputText, InputNumber, Select, etc.
var customMsgs = $(".selector").ojFoo("option", "messagesCustom"); 

Clear all app messages set on the component:

// Foo is InputText, InputNumber, Select, etc.
$(".selector").ojFoo("option", "messagesCustom", []); 

Set app messages using the messagesCustom option:

var msgs = [];
msgs.push({'summary': 'Error Summary', 'detail': 'Error Detail'}); 
// Foo is InputText, InputNumber, Select, etc.
$(".selector").ojFoo("option", "messagesCustom", msgs);

<readonly> messagesHidden :Array|undefined

List of messages currently hidden on component, these are added by component when it runs deferred validation. Each message in the array is either an instance of oj.Message or an object that duck types it. See oj.Message for details.

This is a read-only option so page authors cannot set or change it directly.

An optionChange event is triggered every time this option value changes.

These messages are not shown to the end-user by default, but page author can show hidden messages using the showMessages method.

Default Value:
  • empty array when no option is set.
Since:
  • 0.7
Inherited From:
Source:
See:
Example

Get messagesShown for the component:

// Foo is InputText, InputNumber, Select, etc.
var messages = $(".selector").ojFoo("option", "messagesShown"); 

<readonly> messagesShown :Array|undefined

List of messages currently shown on component, these include messages generated both by the component and ones provided by app using messagesCustom. Each message in the array is either an instance of oj.Message or an object that duck types it. See oj.Message for details.

This is a read-only option so page authors cannot set or change it directly.

An optionChange event is triggered every time its value changes.

Messages retrieved using the messagesShown option are by default shown in the notewindow, but this can be controlled using the 'messages' property of the displayOptions option.

Default Value:
  • empty array when no option is set.
Since:
  • 0.7
Inherited From:
Source:
Example

Get messagesShown for the component:

// Foo is InputText, InputNumber, Select, etc.
var messages = $(".selector").ojFoo("option", "messagesShown"); 

min :number

The minimum value of the slider. The min must not be greater than the max, or else an Error is thrown during initialization.
Default Value:
  • null
Source:
Examples

Initialize the slider with the min option specified:

$( ".selector" ).ojSlider( { "min": 100 } );

Set the min to a number inside of quotes; this is valid and will be coerced to a number, -100 in this example:

$( ".selector" ).ojSlider( { "min": "-100" } );

orientation :string

Specify the orientation of the slider.
Supported Values:
Name Type Description
"horizontal" string Orient the slider horizontally.
"vertical" string Orient the slider vertically.
Default Value:
  • "horizontal"
Source:
Examples

Initialize the slider with the orientation option specified:

$( ".selector" ).ojSlider( { "orientation": "vertical" } );

Get or set the orientation option after initialization:

// getter
var orientation = $( ".selector" ).ojSlider( "option", "orientation" );

// setter
$( ".selector" ).ojSlider( "option", "orientation", "vertical" );

<readonly> rawValue :number|Array.<Number>|undefined

The rawValue is the read-only option for retrieving the transient value from the slider.

The rawValue updates to display the transient changes of the slider thumb value (subject to the step constraints). The difference in behavior is that rawValue will be updated the thumb as it is sliding, where as the value option is updated only after the thumb is released (or after a key press).

This is a read-only option so page authors cannot set or change it directly.

Default Value:
  • n/a
Since:
  • 1.2
Source:

rootAttributes :Object

Attributes specified here will be set on the component's root DOM element at creation time. This is particularly useful for components like Dialog that wrap themselves in a new root element at creation time.

The supported attributes are id, which overwrites any existing value, and class and style, which are appended to the current class and style, if any.

Setting this option after component creation has no effect. At that time, the root element already exists, and can be accessed directly via the widget method, per the second example below.

Default Value:
  • null
Inherited From:
Source:
Examples

Initialize a JET component, specifying a set of attributes to be set on the component's root DOM element:

// Foo is the component, e.g., Menu, Button, InputText, InputNumber, Select, etc.
$( ".selector" ).ojFoo({ "rootAttributes": {
  "id": "myId",
  "style": "max-width:100%; color:blue;",
  "class": "my-class"
}});

After initialization, rootAttributes should not be used. It is not needed at that time, as attributes of the root DOM element can simply be set directly, using widget:

// Foo is the component, e.g., Menu, Button, InputText, InputNumber, Select, etc.
$( ".selector" ).ojFoo( "widget" ).css( "height", "100px" );
$( ".selector" ).ojFoo( "widget" ).addClass( "my-class" );

step :number

Determines the size or amount of each interval or step the slider takes between min and max. The full specified value of the range (max - min) should be divisible by step.
Default Value:
  • 1
Source:
Examples

Initialize the slider with the step option specified:

$( ".selector" ).ojSlider( { "step": 10 } );

Set the step to a number inside of quotes; this is valid and will be coerced to a number, 10 in this example:

$( ".selector" ).ojSlider( { "step": "10" } );

title :string|undefined

Represents advisory information for the component, such as would be appropriate for a tooltip.

When a title is present it is by default displayed in the notewindow, or as determined by the 'title' property set on the displayOptions option. When the title option changes the component refreshes to display the new title.

JET takes the title attribute off the input and creates a notewindow with the title text. The HTML title attribute only shows up on mouse blur, not on keyboard and not in a mobile device. So title would only be for text that is not important enough to show all users, or for text that you show the users in another way as well, like in the label. Also you cannot theme the native browser's title window like you can the JET notewindow, so low vision users may have a hard time seeing it. For these reasons, the JET EditableValue components do not use the HTML's title attribute.

To include formatted text in the title, format the string using html tags. For example the title might look like:

<html>Enter <b>at least</b> 6 characters</html>
If you use formatted text, it should be accessible and make sense to the user if formatting wasn't there.
Default Value:
  • when the option is not set, the element's title attribute is used as its initial value if it exists.
Inherited From:
Source:
Examples

Initialize the component with the title option:

<!-- Foo is InputText, InputNumber, Select, etc. -->
<input id="username" type="text" data-bind="
   ojComponent: {component: 'ojFoo', title : 'enter at least 3 alphanumeric characters', 
                 pattern: '[a-zA-Z0-9]{3,}', value: ''}"/>

Initialize title option from html attribute 'title':

<!-- Foo is InputText, InputNumber, Select, etc. -->
<input id="username" type="text" value= "foobar" title="enter at least 3 alphanumeric characters" 
          pattern="[a-zA-Z0-9]{3,}"/>
$("#username").ojFoo({}); // Foo is InputText, InputNumber, Select, etc. // reading the title option will return "enter at least 3 alphanumeric characters" $("#username").ojFoo("option", "title"); // Foo is InputText, InputNumber, Select, etc.

translations :Object

A collection of translated resources from the translation bundle, or null if this component has no resources. Resources may be accessed and overridden individually or collectively, as seen in the examples.

If this component has (or inherits) translations, their documentation immediately follows this doc entry.

Default Value:
  • an object containing all resources relevant to the component and all its superclasses, or null if none
Inherited From:
Source:
Examples

Initialize the component, overriding some translated resources. This syntax leaves the other translations intact at create time, but not if called after create time:

// Foo is InputDate, InputNumber, etc.
$( ".selector" ).ojFoo({ "translations": { someKey: "someValue",
                                           someOtherKey: "someOtherValue" } });

Get or set the translations option, after initialization:

// Get one.  (Foo is InputDate, InputNumber, etc.)
var value = $( ".selector" ).ojFoo( "option", "translations.someResourceKey" );

// Get all.  (Foo is InputDate, InputNumber, etc.)
var values = $( ".selector" ).ojFoo( "option", "translations" );

// Set one, leaving the others intact.  (Foo is InputDate, InputNumber, etc.)
$( ".selector" ).ojFoo( "option", "translations.someResourceKey", "someValue" );

// Set many.  Any existing resource keys not listed are lost.  (Foo is InputDate, InputNumber, etc.)
$( ".selector" ).ojFoo( "option", "translations", { someKey: "someValue",
                                                    someOtherKey: "someOtherValue" } );

translations.invalidStep :string

Invalid step value.

See the translations option for usage examples.

Default Value:
  • "Invalid step; step must be > 0"
Since:
  • 1.1.1
Source:

translations.maxMin :string

Max is greater than min.

See the translations option for usage examples.

Default Value:
  • "Max must not be less than min"
Since:
  • 1.1.1
Source:

translations.noValue :string

Missing value exception.

See the translations option for usage examples.

Default Value:
  • "ojSlider has no value"
Since:
  • 1.1.1
Source:

translations.optionNum :string

The option is not a number.

See the translations option for usage examples.

Default Value:
  • "{option} option is not a number"
Since:
  • 1.1.1
Source:

translations.valueRange :string

Value outside min to max range.

See the translations option for usage examples.

Default Value:
  • "Value must be within min to max range"
Since:
  • 1.1.1
Source:

type :string

The slider type determines whether the slider has one thumb or two thumbs, and how the value is represented in the UI.

Note that for the use case of dynamically switching between a range slider and a single-thumb slider, it is best to set the type option before setting the value option. This avoids the loss of the second thumb's value (during value coersion) when switching from a single-thumb slider to a range slider (when the value would be set as an array on a single-thumb slider).

Supported Values:
Name Type Description
"fromMin" string A single-thumb slider where the value bar goes from the slider min to the the slider thumb.
"fromMax" string A single-thumb slider where the value bar goes from the slider thumb to the the slider max.
"range" string A slider with two thumbs, where the value bar goes between the slider thumbs.
"single" string A single-thumb slider where the value bar has no additional styling.
Default Value:
  • "fromMin"
Source:
Example

Initialize component with type option set to "range":

$(".selector").ojSlider({"type": "range"});

value :number|Array.<Number>

The value of the component. Value can be a number or an array. When type is equal to "range" the value should be an array of two numbers, while any other type should have value defined as a number.

Note that the value option should be compatible with the type option, as described above. A value that is not compatible with the type will be coerced into a compatible value. For example, it type is set to "range" and the value is not an array of two numbers, then the value will be automatically coerced into an array of two numbers.

Also note that for the use case of dynamically switching between a single-thumb slider and a range slider, you should set the type option before setting the value option. This avoids the loss of the second thumb's value (during value coersion) when switching from a single-thumb slider to a range slider (when the value would be set as an array on a single-thumb slider).

Default Value:
  • 0
Source:
Examples

Initialize the component with the value option specified:

$(".selector").ojSlider({'value': 55});

Get or set value option, after initialization:

// Getter: returns 55
$(".selector").ojSlider("option", "value");
// Setter: sets 20
$(".selector").ojSlider("option", "value", 20);

Set the value to a number inside of quotes; this is valid and will be coerced to a number, 10 in this example:

$( ".selector" ).ojSlider( { "value": "10" } );

Binding Attributes

Binding attributes are similar to component options, but are exposed only via the ojComponent binding.

invalidComponentTracker :oj.InvalidComponentTracker

When this attribute is bound to an observable, the framework pushes an object of type oj.InvalidComponentTracker onto the observable. The object itself tracks the validity of a group of editable components.

When this attribute is present, the binding registers a listener for the optionChange event. This event is fired by JET editable components whenever its validity changes (i.e. when messagesShown or messagesHidden options change). When the event is fired, the listener determines the current validity of the component and updates the tracker.

The observable bound to this attribute is often used with multiple component binding declarations as shown in the example below.

This attribute is only exposed via the ojComponent binding, and is not a component option.

Default Value:
  • null
Since:
  • 0.7
Inherited From:
Source:
Examples

Track validity of multiple components using a single observable bound to the invalidComponentTracker attribute:

<input id="username" type="text" name="username" required 
  data-bind="ojComponent: {component: 'ojInputText', value: userName, 
                           invalidComponentTracker: tracker}">

<input id="password" type="password" name="password" required 
  data-bind="ojComponent: {component: 'ojInputPassword', value: password, 
                           invalidComponentTracker: tracker}"/>
  
// ViewModel that defines the tracker observable
<script>
function MemberViewModel() 
{ 
  var self = this;
  
  self.tracker = ko.observable();
  
  self.userName = ko.observable();   
  self.password = ko.observable();
  
  self.focusOnFirstInvalid = function() 
  {
     var trackerObj = ko.utils.unwrapObservable(self.tracker);
     if (trackerObj !== undefined)
     {
       // make sure the trackerObj is an oj.InvalidComponentTracker 
       // before calling methods on it.
       if (trackerObj instanceof oj.InvalidComponentTracker)
       {
          // showMessages first
          // (this will show any hidden messages, if any)
          trackerObj.showMessages();
          // focusOnFirstInvalid will focus on the first component
          // that is invalid, if any.      
          trackerObj.focusOnFirstInvalid();
        }
      }
    }
}
</script>

Use tracker property invalid to disable button:

// button is disabled if there are components currently showing errors
<button type="button" data-bind="ojComponent: {component: 'ojButton', label: 'Submit',
                                               disabled: tracker()['invalidShown']}">

Sub-ID's

Each subId locator object contains, at minimum, a subId property, whose value is a string that identifies a particular DOM node in this component. It can have additional properties to further specify the desired node. See getNodeBySubId and getSubIdByNode methods for more details.

Properties:
Name Type Description
subId string Sub-id string to identify a particular dom node.

Following are the valid subIds:

oj-slider-bar

Sub-ID for the slider bar.

Source:
Example

Get the node for the slider bar:

var node = $( ".selector" ).ojSlider( "getNodeBySubId",
{'subId': 'oj-slider-bar'} );

oj-slider-bar-value

Sub-ID for the slider bar value.

Source:
Example

Get the node for the slider bar value:

var node = $( ".selector" ).ojSlider( "getNodeBySubId",
{'subId': 'oj-slider-bar-value'} );

oj-slider-thumb-0

Sub-ID for the slider thumb. Use this id to access the thumb of a single-thumbed slider, or the first thumb (associated with the lowest value) of a range slider.

Source:
Example

Get the node for the slider thumb:

var node = $( ".selector" ).ojSlider( "getNodeBySubId", {'subId': 'oj-slider-thumb-0'} );

oj-slider-thumb-1

Sub-ID for the second slider thumb. Use this id to access the second thumb (associated with the highest value) of a range slider.

Source:
Example

Get the node for the slider thumb:

var node = $( ".selector" ).ojSlider( "getNodeBySubId",
{'subId': 'oj-slider-thumb-1'} );

Events

destroy

Triggered before the component is destroyed. This event cannot be canceled; the component will always be destroyed regardless.

Inherited From:
Source:
Examples

Initialize component with the destroy callback

// Foo is Button, InputText, etc.
$(".selector").ojFoo({
  'destroy': function (event, data) {}
});

Bind an event listener to the destroy event

$(".selector").on({
  'ojdestroy': function (event, data) {
      // verify that the component firing the event is a component of interest
      if ($(event.target).is(".mySelector")) {
          window.console.log("The DOM node id for the destroyed component is : %s", event.target.id);
      }
  };
});

optionChange

Fired whenever a supported component option changes, whether due to user interaction or programmatic intervention. If the new value is the same as the previous value, no event will be fired. The event listener will receive two parameters described below:
Properties:
Name Type Description
event Event jQuery event object
ui Object event payload
Properties
Name Type Argument Description
option string the name of the option that changed.
previousValue Object an Object holding the previous value of the option. When previousValue is not a primitive type, i.e., is an Object, it may hold the same value as the value property.
value Object an Object holding the current value of the option.
subproperty Object <nullable>
an Object holding information about the subproperty that changed.
Properties
Name Type Description
path string the subproperty path that changed.
previousValue Object an Object holding the previous value of the subproperty.
value Object an Object holding the current value of the subproperty.
optionMetadata Object information about the option that changed
Properties
Name Type Description
writeback string "shouldWrite" or "shouldNotWrite". For use by the JET writeback mechanism; 'shouldWrite' indicates that the value should be written to the observable.
Inherited From:
Source:
Examples

Initialize component with the optionChange callback

// Foo is Button, InputText, etc.
$(".selector").ojFoo({
  'optionChange': function (event, ui) {}
});

Bind an event listener to the ojoptionchange event

$(".selector").on({
  'ojoptionchange': function (event, ui) {
      // verify that the component firing the event is a component of interest
      if ($(event.target).is(".mySelector")) {
          window.console.log("option that changed is: " + ui['option']);
      }
  };
});

Methods

getNodeBySubId(locator) → {Element|null}

Returns the component DOM node indicated by the locator parameter.

If the locator or its subId is null, then this method returns the element on which this component was initialized.

If a non-null subId is provided but no corresponding node can be located, then this method returns null.

This method is intended for use in test automation only, and should not be used in a production environment.

Parameters:
Name Type Description
locator Object An Object containing, at minimum, a subId property, whose value is a string that identifies a particular DOM node in this component.

If this component has (or inherits) any subIds, then they are documented in the Sub-ID's section of this document.

Some components may support additional fields of the locator Object, to further specify the desired node.

Inherited From:
Source:
Returns:
The DOM node located by the locator, or null if none is found.
Type
Element | null
Example

Get the node for a certain subId:

// Foo is ojInputNumber, ojInputDate, etc.
var node = $( ".selector" ).ojFoo( "getNodeBySubId", {'subId': 'oj-some-sub-id'} );

getSubIdByNode(node) → {Object|null}

Returns the subId string for the given DOM node in this component. For details, see getNodeBySubId and the Sub-ID's section of this document.

This method is intended for use in test automation only, and should not be used in a production environment.

Parameters:
Name Type Description
node Element DOM node in this component
Inherited From:
Source:
Returns:
The subId for the DOM node, or null if none is found.
Type
Object | null
Example

Get the subId for a certain DOM node:

// Foo is ojInputNumber, ojInputDate, etc.
var locator = $( ".selector" ).ojFoo( "getSubIdByNode", nodeInsideComponent );

isValid() → {boolean}

whether the component is currently valid. It is valid if it doesn't have any errors.
Inherited From:
Source:
Returns:
Type
boolean
Example

Check whether the component is valid:

var value = $(".selector").ojInputText("isValid");

option(optionName, value) → {Object|undefined}

This method has several overloads, which get and set component options and their fields. The functionality is unchanged from that provided by JQUI. See the examples for details on each overload.

Parameters:
Name Type Argument Description
optionName string | Object <optional>
the option name (string, first two overloads), or the map (Object, last overload). Omitted in the third overload.
value Object <optional>
a value to set for the option. Second overload only.
Inherited From:
Source:
Returns:
The getter overloads return the retrieved value(s). When called via the public jQuery syntax, the setter overloads return the object on which they were called, to facilitate method chaining.
Type
Object | undefined
Examples

First overload: get one option:

This overload accepts a (possibly dot-separated) optionName param as a string, and returns the current value of that option.

var isDisabled = $( ".selector" ).ojFoo( "option", "disabled" ); // Foo is Button, Menu, etc.

// For object-valued options, dot notation can be used to get the value of a field or nested field.
var startIcon = $( ".selector" ).ojButton( "option", "icons.start" ); // icons is object with "start" field

Second overload: set one option:

This overload accepts two params: a (possibly dot-separated) optionName string, and a new value to which that option will be set.

$( ".selector" ).ojFoo( "option", "disabled", true ); // Foo is Button, Menu, etc.

// For object-valued options, dot notation can be used to set the value
// of a field or nested field, without altering the rest of the object.
$( ".selector" ).ojButton( "option", "icons.start", myStartIcon ); // icons is object with "start" field

Third overload: get all options:

This overload accepts no params, and returns a map of key/value pairs representing all the component options and their values.

var options = $( ".selector" ).ojFoo( "option" ); // Foo is Button, Menu, etc.

Fourth overload: set one or more options:

This overload accepts a single map of option-value pairs to set on the component. Unlike the first two overloads, dot notation cannot be used.

$( ".selector" ).ojFoo( "option", { disabled: true, bar: 42 } ); // Foo is Button, Menu, etc.

refresh()

Called when the DOM underneath the component chages requiring a re-render of the component. An example is when the label for the input changes.

Another time when refresh might be called is when the locale for the page changes. When it changes, options used by its converter and validator that are locale specific, its hints, messages and translations will be updated.

When refresh method is called, the component may take various steps such as clearing messages, running validation etc., based on the state it is in.

Steps Performed Always

  • The converter and validators used by the component are reset, and new converter and validator hints is pushed to messaging. E.g., notewindow displays the new hint(s).

Running Validation

  • if component is valid when refresh() is called, the display value is refreshed if component has a converter set.
  • if component is invalid and is showing messages - messagesShown option is non-empty, when refresh() is called, then all component messages are cleared and full validation run using the display value on the component.
    • if there are validation errors, then value option is not updated and the error pushed to messagesShown option.
    • if no errors result from the validation, the value option is updated; page author can listen to the optionChange event on the value option to clear custom errors.
  • if component is invalid and has deferred messages when refresh() is called, then all component messages are cleared and deferred validation is run.

Clearing Messages

  • If clearing messages only those created by the component are cleared. These include ones in messagesHidden and messagesShown options.
  • messagesCustom option is not cleared.

Since:
  • 0.7
Inherited From:
Source:
Returns:
When called via the public jQuery syntax, this method returns the object on which it was called, to facilitate method chaining.
Example

Refresh component after changing the label DOM.

// Foo is ojInputNumber, ojInputText, etc.
$(selector).ojFoo("refresh");

reset()

Resets the component by clearing all messages options - messagesCustom, messagesHidden and messagesShown, and updates the component's display value using the option value. User entered values will be erased when this method is called.
Since:
  • 0.7
Inherited From:
Source:
Returns:
When called via the public jQuery syntax, this method returns the object on which it was called, to facilitate method chaining.
Example

Reset component

$(selector).ojInputText("reset"); 

showMessages()

Takes all hidden messages that are in the messagesHidden option and moves them to messagesShown option. If there were no messages in messagesHidden then this method simply returns.

To view messages user has to set focus on the component.

An optionChange event is triggered on both messagesHidden and messagesShown options.

Since:
  • 0.7
Inherited From:
Source:
Returns:
When called via the public jQuery syntax, this method returns the object on which it was called, to facilitate method chaining.
Example

Display all messages including deferred ones.

$(selector).ojInputText("showMessages");

Non-public Methods

Note: Extending JET components is not currently supported. Thus, non-public methods are for internal use only.

<protected, static> _GetContentElement()

Returns a jquery object of the elements representing the content nodes (slider thumb).
Source:

<protected, static> _GetDefaultStyleClass() → {string}

Returns the default styleclass for the component.
Source:
Returns:
Type
string

<protected, static> _GetMessagingLauncherElement()

Returns a jquery object of the launcher element representing the content nodes (slider).
Source:

<protected> _AddActiveable(options)

Add touch and mouse listeners to toggle oj-active class
Parameters:
Name Type Description
options !Object | !jQuery This parameter can either be the element (convenience syntax for callers needing to specify only the element(s) that would otherwise have been passed as options.element) or an object supporting the following fields:
Properties
Name Type Argument Description
element jQuery The element(s) to receive the oj-active class on active Required if afterToggle is specified.
afterToggle function(string) <nullable>
Optional callback function called each time the active classes have been toggled, after the toggle. The event.type string is passed and indicates whether the classes were added or removed. The active classes are added on "touchstart" or "mousedown" or "mouseenter" and the active classes are removed on "touchend" or "touchcancel" or "mouseup" or "mouseleave". Components with consistency requirements, such as "oj-default must be applied iff no state classes such as oj-active are applied," can enforce those rules in this callback.
Inherited From:
Source:
See:

<protected> _AddHoverable(options)

Add mouse listners to toggle oj-hover class
Parameters:
Name Type Description
options !Object | !jQuery This param can either be the element (convenience syntax for callers needing to specify only the element(s) that would otherwise have been passed as options.element) or an object supporting the following fields:
Properties
Name Type Argument Description
element jQuery The element(s) to receive the oj-hover class on hover Required if afterToggle is specified.
afterToggle function(string) <nullable>
Optional callback function called each time the hover classes have been toggled, after the toggle. The string "mouseenter" or "mouseleave" is passed, indicating whether the classes were added or removed. Components with consistency requirements, such as "oj-default must be applied iff no state classes such as oj-hover are applied," can enforce those rules in this callback.
Inherited From:
Source:
See:

<protected> _AfterCreate()

The value option alone is initialized here since it requires the component to be fully created. Calling this.options.value before this method does not guarantee the correct value to be returned.
Inherited From:
Source:

<protected> _AfterCreateEvent()

This method is called after the create event is fired. Components usually should not override this method, as it is rarely correct to wait until after the create event to perform a create-time task.

An example of a correct usage of this method is Dialog's auto-open behavior, which needs to happen after the create event.

Only behaviors (like Dialog auto-open behavior) should occur in this method. Component initialization must occur earlier, before the create event is fired, so that create listeners see a fully inited component.

Overrides of this method should call this._super first.

Do not confuse this method with the _AfterCreate method, which is more commonly used.

Inherited From:
Source:

<protected> _AfterSetOption(option, flags)

Performs post processing after _SetOption() is called. Different options when changed perform different tasks.
Parameters:
Name Type Argument Description
option string
flags Object <optional>
Inherited From:
Source:

<protected> _AfterSetOptionDisabledReadOnly(option, validationOptions)

Performs post processing after disabled or readOnly option changes by taking the following steps. (Steps are same for readOnly option).

if disabled component is enabled then,
- if there are no errors, run deferred validation. component could have been initialized with empty value and disabled.
- if component is invalid and showing messages clear component error, grab UI value and run full validation.
- if component is invalid and has hidden messages; do nothing.

if enabled component is disabled no validation is run.

Parameters:
Name Type Description
option String
validationOptions Object
Inherited From:
Source:

<protected> _AfterSetOptionValue(option, flags)

Performs post processing after value option changes by taking the following steps. - triggers an optionChange and does writeback if required.
- if setOption was from programmatic intervention,
  - clear custom messages and component messages;
  - run deferred validation. if there is an error, updates messagesHidden.
- always refreshes UI display
Parameters:
Name Type Argument Description
option string
flags Object <optional>
Inherited From:
Source:

<protected> _CanSetValue() → {boolean}

Whether the a value can be set on the component. For example, if the component is disabled then setting value on component is a no-op.
Inherited From:
Source:
See:
Returns:
Type
boolean

<protected> _ClearPlaceholder()

Clear the placeholder option
Inherited From:
Source:

<protected> _CompareOptionValues(option, value1, value2) → {boolean}

Compares 2 option values for equality and returns true if they are equal; false otherwise.

Parameters:
Name Type Description
option String the name of the option
value1 Object first value
value2 Object another value
Inherited From:
Source:
Returns:
Type
boolean

<protected> _ComponentCreate()

Initializes options defined by this base class.
Inherited From:
Source:

<protected> _create()

This method is final in JET. Components should instead override one or more of the overridable create-time methods listed in _ComponentCreate.

Inherited From:
Source:

<protected> _createDescribedByForLabel()

Refreshes the aria-describedby for label element's helpIcon
Inherited From:
Source:

<protected> _destroy()

Override of protected base class method. Method name needn't be quoted since is in externs.js.
Source:

<protected> _FixRendererContext(context) → {Object}

Prepares a custom renderer context object for either the JQuery or custom element syntax, removing and exposing keys as needed.
Parameters:
Name Type Description
context Object The renderer context object.
Inherited From:
Source:
Returns:
The cleaned up renderer context.
Type
Object

<protected> _focusable(options)

Sets JET's "focus" CSS classes when the element is focused and removes them when focus is lost.

The oj-focus class is set on all focuses.

Some components additionally have an oj-focus-highlight class, which applies a focus indicator that is appropriate on a subset of the occasions that oj-focus is appropriate. Those components should pass true for the applyHighlight param, in which case the oj-focus-highlight class is set if appropriate given the current focus highlight policy.

Focus highlight policy

The focus highlight policy supports the 3 values listed below. By default, it is retrieved from the $focusHighlightPolicy SASS variable, shared by many components and patterns. Components with different needs, including those exposing a component-specific SASS variable or other API for this, should see the getFocusHighlightPolicy parameter below. Valid focus highlight policies:

Policy Description
"nonPointer" Indicates that the component should apply the oj-focus-highlight class only for focuses not resulting from pointer (touch or mouse) interaction. (In the built-in themes, the SASS variable defaults to this value.)
"all" Indicates that the component should apply the class for all focuses.
"none" Indicates that the component should never apply the class, because the application has taken responsibility for applying the class when needed for accessibility.
Toggling the classes

Components that toggle these focus classes outside of this API must maintain the invariant that oj-focus-highlight is applied to a given element in a (not necessarily strict) subset of cases that oj-focus is applied to that element.

Typically the specified element should be within the component subtree, in which case the classes will automatically be removed from the element when the component is destroyed, when its disabled option is set to true, and when _NotifyDetached() is called.

As a minor exception, for components that wrap themselves in a new root node at create time, if the specified element is within the root node's subtree but not within the init node's subtree, then at destroy time only, the classes will not be removed, since destroy() is expected to remove such nodes.

If the element is NOT in the component subtree, then the caller is responsible for removing the classes at the times listed above.

Listeners

If setupHandlers is not passed, or if setupHandlers is passed and uses _on to register its listeners as seen in the example, then the listeners are not invoked when the component is disabled, and the listeners are automatically cleaned up when the component is destroyed. Otherwise, the caller is responsible for ensuring that the disabled state is handled correctly, and removing the listeners at destroy time.

Related API's

Non-component internal callers should see oj.DomUtils.makeFocusable(). Per its JSDoc (unpublished; see the source), it has a couple of additional usage considerations.

Parameters:
Name Type Description
options !Object | !jQuery This param can either be the element (convenience syntax for callers needing to specify only the element(s) that would otherwise have been passed as options.element) or an object supporting the following fields:
Properties
Name Type Argument Description
element jQuery The element(s) to receive the oj-focus classes on focus. Required if setupHandlers not passed; ignored otherwise.
applyHighlight boolean true if the oj-focus-highlight class should be applied when appropriate. false or omitted if that class should never be applied.
afterToggle function(string) <nullable>
Optional callback function called each time the focus classes have been toggled, after the toggle. The string "focusin" or "focusout" is passed, indicating whether the classes were added or removed. Components with consistency requirements, such as "oj-default must be applied iff no state classes such as oj-focus are applied," can enforce those rules in this callback.
getFocusHighlightPolicy function() <nullable>
Optional if applyHighlight is true; ignored otherwise. Components with a component-specific focus policy mechanism should pass a function that always returns one of the three valid values listed above, keeping in mind that this method can be called on every focus. See the example.
recentPointer function() <nullable>
Relevant iff applyHighlight is true and the focus highlight policy is "nonPointer"; ignored otherwise. Recent pointer activity is considered to have occurred if (a) a mouse button or finger has recently been down or up, or (b) this optional callback function returns true. Components wishing to additionally take into account (say) recent pointer movements can supply a function returning true if those movements have been detected, keeping in mind that this method can be called on every focus. See the example.
setupHandlers function(function(!jQuery),function(!jQuery)) <nullable>
Can be omitted by components whose focus classes need to be added and removed on focusin and focusout, respectively. Components needing to add/remove those classes in response to other events should specify this parameter, which is called once, immediately. See the examples.
Inherited From:
Source:
Examples

Opt into the highlight behavior, and specify a function to be called every time the classes are toggled:

var self = this;
this._focusable({
    'element': this.element, 
    'applyHighlight': true, 
    'afterToggle' : function() {
        self._toggleDefaultClasses();
    }
});

Arrange for mouse movement to be considered in addition to mouse/finger up/down. Also supply a component-specific focusHighlightPolicy:

var self = this;
this._focusable({
    'element': someElement, 
    'applyHighlight': true, 
    'recentPointer' : function() {
        // A timestamp-based approach avoids the risk of getting stuck in an inaccessible 
        // state if (say) mouseenter is not followed by mouseleave for some reason.
        var millisSincePointerMove = Date.now() - _myPointerMoveTimestamp;
        var isRecent = millisSincePointerMove < myThreshold;
        return isRecent;
    },
    'getFocusHighlightPolicy' : function() {
        // Return the value of a component-specific SASS $variable, component option, or other 
        // component-specific mechanism, either "all", "none", or "nonPointer".  SASS variables
        // should be pulled into JS once statically on load, not per-instance or per-focus.
    }
});

Add/remove the focus classes in response to events other than focusin/focusout:

var self = this;
this._focusable({
    'applyHighlight': myBooleanValue, 
    'setupHandlers': function( focusInHandler, focusOutHandler) {
        self._on( self.element, {
            // This example uses focus/blur listeners, which don't bubble, rather than the 
            // default focusin/focusout (which bubble).  This is useful when one focusable  
            // element is a descendant of another.
            focus: function( event ) {
                focusInHandler($( event.currentTarget ));
            },
            blur: function( event ) {
                focusOutHandler($( event.currentTarget ));
            }
        });
    }
});

Alternate usage of setupHandlers, which simply stashes the handlers so they can be called from the component's existing handlers:

var self = this;
this._focusable({
    'applyHighlight': myBooleanValue, 
    'setupHandlers': function( focusInHandler, focusOutHandler) {
        self._focusInHandler = focusInHandler;
        self._focusOutHandler = focusOutHandler;
    }
});

<protected> _formatValue(value) → {string}

Formats the value for display, based on the converter options. If no converter is set then returns the value as is.
Parameters:
Name Type Description
value string value to be formatted
Inherited From:
Source:
Throws:
when an error occurs during formatting
Type
Error
Returns:
formatted value
Type
string

<protected> _GetAllValidators() → {Array}

Returns an array of all validators built by merging the validators option set on the component and the implicit validators setup by the component.
This does not include the implicit required validator. Components can override to add to this array of validators.
Inherited From:
Source:
Returns:
of validators
Type
Array

<protected> _GetContentElement() → {jQuery}

Returns a jquery object of the element representing the content node. This could be a jQuery object of the element the widget was invoked on - typically this is an input or select or textarea element for which a value can be set.
Inherited From:
Source:
Returns:
the jquery element that represents the editable content. E.g., an input
Type
jQuery

<protected> _GetConverter() → {Object}

Returns the normalized converter instance. Since EditableValue does not have a converter option, this returns null.
Inherited From:
Source:
Returns:
null
Type
Object

<protected> _getCreateOptions()

This method is not used in JET. Components should instead override _InitOptions.

Inherited From:
Source:

<abstract, protected> _GetDefaultStyleClass() → {string}

Returns the default styleclass for the component. All input components must override.
Inherited From:
Source:
Returns:
Type
string

<protected> _GetDisplayValue(value) → {string}

Returns the display value that is ready to be passed to the converter.
Parameters:
Name Type Description
value Object the stored value if available that needs to be formatted for display
Inherited From:
Source:
Returns:
usually a string display value
Type
string

<protected> _GetElementValue()

Returns the element's value. Normally, this is a call to this.element.val(), but for some components, it could be something else. E.g., for ojRadioset the element's value is really the value of the selected radio in the set.
Inherited From:
Source:

<protected> _GetEventForSyntax(event) → {Object}

Given an event, returns the appropriate event for the component syntax. For custom elements, if the event is a JQuery event, this method will return the unwrapped original event.
Parameters:
Name Type Description
event Object [description]
Inherited From:
Source:
Returns:
Type
Object

<protected> _GetImplicitValidators() → {Object}

Returns an array of implicit validators setup by component. This list contains validators for the internal use of the component and are not a part of this.options.validators.
E.g., if the pattern attribute or option is set, a RegExpValidator instance is automatically created and added to this list.
RequiredValidator is tracked separately from the default validators.
Inherited From:
Source:
Returns:
a map of string name to the validator instance.
Type
Object

<protected> _GetLabelElement() → {Object}

Returns a jquery object of the element(s) representing the label node(s) for the input component. First we look for the aria-labelledby attribute on the input. If that's not found, we look for the label with 'for' attribute pointing to input. If that's not found, we walk up the dom looking for aria-labelledby. Note: multiple labels for one input is legal in html-5.
Inherited From:
Source:
Returns:
the jquery element that represents the input component's label. return null if it can't find anything.
Type
Object

<protected> _GetMessagingLauncherElement() → {jQuery}

Returns a jquery object of the element that triggers messaging behavior. The trigger element is usually an input or select or textarea element for which a value can be set/retrieved and validated.
Inherited From:
Source:
Returns:
jquery object
Type
jQuery

<protected> _GetNormalizedValidatorsFromOption() → {Array}

For components that have the 'validators' option, this returns an array of all validators normalized from the validators option set on the component.
Since EditableValue does not include the 'validators' option, this returns [].
Inherited From:
Source:
Returns:
of validators. Since EditableValue does not include the 'validators' option, this returns [].
Type
Array

<protected> _GetReadingDirection() → {string}

Determines whether the component is LTR or RTL.

Component responsibilities:

  • All components must determine directionality exclusively by calling this protected superclass method. (So that any future updates to the logic can be made in this one place.)
  • Components that need to know the directionality must call this method at create-time and from refresh(), and cache the value.
  • Components should not call this at other times, and should instead use the cached value. (This avoids constant DOM queries, and avoids any future issues with component reparenting (i.e. popups) if support for directional islands is added.)

App responsibilities:

  • The app specifies directionality by setting the HTML "dir" attribute on the <html> node. When omitted, the default is "ltr". (Per-component directionality / directional islands are not currently supported due to inadequate CSS support.)
  • As with any DOM change, the app must refresh() the component if the directionality changes dynamically. (This provides a hook for component housekeeping, and allows caching.)
Default Value:
  • "ltr"
Inherited From:
Source:
Returns:
the reading direction, either "ltr" or "rtl"
Type
string

<protected> _GetSavedAttributes(element) → {Object|null}

Gets the saved attributes for the provided element.

If you don't override _SaveAttributes and _RestoreAttributes, then this will return null.

If you override _SaveAttributes to call _SaveAllAttributes, then this will return all the attributes. If you override _SaveAttributes/_RestoreAttributes to do your own thing, then you may also have to override _GetSavedAttributes to return whatever you saved if you need access to the saved attributes.

Parameters:
Name Type Description
element Object jQuery selection, should be a single entry
Inherited From:
Source:
Returns:
savedAttributes - attributes that were saved for this element in _SaveAttributes, or null if none were saved.
Type
Object | null

<protected> _HandleChangeEvent(event)

Convenience handler for the DOM 'change' event. Subclasses are expected to wire up event handlers for DOM events that they wish to handle.
The implementation retrieves the display value for the component by calling _GetDisplayValue() and calls _SetValue(), with full validation.
Parameters:
Name Type Description
event Event DOM event
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<protected> _HasPlaceholderSet()

whether the placeholder option is set
Inherited From:
Source:

<protected> _init()

JET components should almost never implement this JQUI method. Please consult an architect if you believe you have an exception. Reasons:

  • This method is called at create time, after the create event is fired. It is rare for that to be the appropriate time to perform a create-time task. For those rare cases, we have the _AfterCreateEvent method, which is preferred over this method since it is called only at that time, not also at re-init time (see next).
  • This method is also called at "re-init" time, i.e. when the initializer is called after the component has already been created. JET has not yet identified any desired semantics for re-initing a component.
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<protected> _InitOptions(originalDefaults, constructorOptions)

Called at component create time primarily to initialize options, often using DOM values. This method is called before _ComponentCreate is called, so components that override this method should be aware that the component has not been rendered yet. The element DOM is available and can be relied on to retrieve any default values.

Parameters:
Name Type Argument Description
originalDefaults Object original default options defined on the widget and its ancestors.
constructorOptions Object <nullable>
options passed into the widget constructor
Source:

<protected> _IsCustomElement() → {boolean}

Determines whether the component is being rendered as a custom element.
Inherited From:
Source:
Returns:
True if the component is being rendered as a custom element
Type
boolean

<protected> _IsEffectivelyDisabled() → {boolean}

Determines whether this component is effectively disabled, i.e. it has its 'disabled' attribute set to true or it has been disabled by its ancestor component.

Inherited From:
Source:
Returns:
true if the component has been effectively disabled, false otherwise
Type
boolean

<protected> _IsRequired() → {boolean}

Whether the component is required. EditableValue doesn't support the required option, so return false. This allows us to keep some of the required code in EditableValue.
Inherited From:
Source:
Returns:
true if required; false
Type
boolean

<protected> _NotifyAttached()

Notifies the component that its subtree has been connected to the document programmatically after the component has been created.

Inherited From:
Source:

<protected> _NotifyContextMenuGesture(menu, event, eventType)

When the contextMenu option is set, this method is called when the user invokes the context menu via the default gestures: right-click, Press & Hold, and Shift-F10. Components should not call this method directly.

The default implementation simply calls this._OpenContextMenu(event, eventType). Overrides of this method should call that same method, perhaps with additional params, not menu.open().

This method may be overridden by components needing to do things like the following:

  • Customize the launcher or position passed to _OpenContextMenu(). See that method for guidance on these customizations.
  • Customize the menu contents. E.g. some components need to enable/disable built-in commands like Cut and Paste, based on state at launch time.
  • Bail out in some cases. E.g. components with UX approval to use PressHoldRelease rather than Press & Hold can override this method to say if (eventType !== "touch") this._OpenContextMenu(event, eventType);. When those components detect the alternate context menu gesture (e.g. PressHoldRelease), that separate listener should call this._OpenContextMenu(), not this method (_NotifyContextMenuGesture()), and not menu.open().

Components needing to do per-launch setup like the above tasks should do so in an override of this method, not in a beforeOpen listener or an _OpenContextMenu() override. This is discussed more fully here.

Parameters:
Name Type Description
menu Object The JET Menu to open as a context menu. Always non-null.
event Event What triggered the menu launch. Always non-null.
eventType string "mouse", "touch", or "keyboard". Never null.
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Source:

<protected> _NotifyDetached()

Notifies the component that its subtree has been removed from the document programmatically after the component has been created.

Inherited From:
Source:

<protected> _NotifyDetached()

Notifies the component that its subtree has been removed from the document programmatically after the component has been created.

Inherited From:
Source:

<protected> _NotifyHidden()

Notifies the component that its subtree has been made hidden programmatically after the component has been created.

Inherited From:
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<protected> _NotifyShown()

Notifies the component that its subtree has been made visible programmatically after the component has been created.

Inherited From:
Source:

<protected> _OpenContextMenu(event, eventType, openOptions, submenuOpenOptions, shallow)

The only correct way for a component to open its context menu is by calling this method, not by calling Menu.open() or _NotifyContextMenuGesture(). This method should be called in two cases:

  • This method is called by _NotifyContextMenuGesture() and its overrides. That method is called when the baseComponent detects the default context menu gestures: right-click, Press & Hold, and Shift-F10.
  • Components with UX-approved support for alternate context menu gestures like PressHoldRelease should call this method directly when those gestures are detected.

Components needing to customize how the context menu is launched, or do any per-launch setup, should do so in the caller of this method, (which is one of the two callers listed above), often by customizing the params passed to this method (_OpenContextMenu) per the guidance below. This setup should not be done in the following ways:

  • Components should not perform setup in a beforeOpen listener, as this can cause a race condition where behavior depends on who got their listener registered first: the component or the app. The only correct component use of a beforeOpen listener is when there's a need to detect whether something else launched the menu.
  • Components should not override this method (_OpenContextMenu), as this method is final. Instead, customize the params that are passed to it.

Guidance on setting OpenOptions fields:

Launcher:

Depending on individual component needs, any focusable element within the component can be the appropriate launcher for this launch.

Browser focus returns to the launcher on menu dismissal, so the launcher must at least be focusable. Typically a tabbable (not just focusable) element is safer, since it just focuses something the user could have focused on their own.

By default (i.e. if openOptions is not passed, or if it lacks a launcher field), the component init node is used as the launcher for this launch. If that is not focusable or is suboptimal for a given component, that component should pass something else. E.g. components with a "roving tabstop" (like Toolbar) should typically choose the current tabstop as their launcher.

The :focusable and :tabbable selectors may come in handy for choosing a launcher, e.g. something like this.widget().find(".my-class:tabbable").first().

Position:

By default, this method applies positioning that differs from Menu's default in the following ways: (The specific settings are subject to change.)

  • For mouse and touch events, the menu is positioned relative to the event, not the launcher.
  • For touch events, "my" is set to "start>40 center", to avoid having the context menu obscured by the user's finger.

Usually, if position needs to be customized at all, the only thing that needs changing is its "of" field, and only for keyboard launches (since mouse/touch launches should almost certainly keep the default "event" positioning). This situation arises anytime the element relative to which the menu should be positioned for keyboard launches is different than the launcher element (the element to which focus should be returned upon dismissal). For this case, { "position": {"of": eventType==="keyboard" ? someElement : "event"} } can be passed as the openOptions param.

Be careful not to clobber useful defaults by specifying too much. E.g. if you only want to customize "of", don't pass other fields like "my", since your value will be used for all modalities (mouse, touch, keyboard), replacing the modality-specific defaults that are usually correct. Likewise, don't forget the eventType==="keyboard" check if you only want to customize "of" for keyboard launches.

InitialFocus:

This method forces initialFocus to "menu" for this launch, so the caller needn't specify it.

Parameters:
Name Type Argument Description
event Event What triggered the context menu launch. Must be non-null.
eventType string "mouse", "touch", or "keyboard". Must be non-null. Passed explicitly since caller knows what it's listening for, and since events like contextmenu and click can be generated by various input modalities, making it potentially error-prone for this method to determine how they were generated.
openOptions Object <optional>
Options to merge with this method's defaults, which are discussed above. The result will be passed to Menu.open(). May be null or omitted. See also the shallow param.
submenuOpenOptions Object <optional>
Options to be passed through to Menu.open(). May be null or omitted.
shallow boolean <optional>
Whether to perform a deep or shallow merge of openOptions with this method's default value. The default and most commonly correct / useful value is false.
  • If true, a shallow merge is performed, meaning that the caller's position object, if passed, will completely replace this method's default position object.
  • If false or omitted, a deep merge is performed. For example, if the caller wishes to tweak position.of while keeping this method's defaults for position.my, position.at, etc., it can pass {"of": anOfValue} as the position value.

The shallow param is n/a for submenuOpenOptions, since this method doesn't apply any defaults to that. (It's a direct pass-through.)

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<protected> _parseValue(submittedValue) → {Object}

Parses the value using the converter set and returns the parsed value. If parsing fails the error is written into the element
Parameters:
Name Type Argument Description
submittedValue string <optional>
to parse
Inherited From:
Source:
Throws:
an Object with message
Type
Error
Returns:
parsed value
Type
Object

<protected> _Refresh(name, value, forceDisplayValueRefresh)

Called in response to a change in the options set for this component, this method refreshes the component display value. Subclasses can override to provide custom refresh behavior.
Parameters:
Name Type Argument Description
name String <optional>
the name of the option that was changed
value Object <optional>
the current value of the option
forceDisplayValueRefresh boolean <optional>
Inherited From:
Source:

<protected> _ReleaseResources()

Release resources held by this component, for example, remove listeners. This is called during destroy. _SetupResources will set up resources needed by this component, and is called during _create.

This base class default implementation does nothing.

Component subclasses can opt in by overriding _SetupResources and _ReleaseResources.
Inherited From:
Source:

<protected> _RemoveActiveable(element)

Remove touch and mouse listeners that were registered in _AddActiveable
Parameters:
Name Type Description
element jQuery The same element passed to _AddActiveable
Inherited From:
Source:
See:

<protected> _RemoveHoverable(element)

Remove mouse listners that were registered in _AddHoverable
Parameters:
Name Type Description
element jQuery The same element passed to _AddHoverable
Inherited From:
Source:
See:

<protected> _ResetAllValidators()

EditableValue caches the validators to be run, within this._allValidators variable. This is great; however when the implicit validator needs to be reset [i.e. min + max changing] or the validators option changes, then the cached this._allValidators needs to be cleared. This method also updates the messaging strategies as hints associated with validators could have changed.
Inherited From:
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<protected> _ResetComponentState()

Called anytime the label DOM changes requiring a reset of any dependent feature that caches the label, including all validators.
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<protected> _RestoreAllAttributes()

Restores all the element's attributes which were saved in _SaveAllAttributes. This method is final in JET.

If a subclass wants to save/restore all attributes on create/destroy, then the subclass can override _SaveAttributes and call _SaveAllAttributes and also override _RestoreAttributes and call _RestoreAllAttributes.

Inherited From:
Source:

<protected> _RestoreAttributes()

Inherited From:
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<protected> _SaveAllAttributes(element)

Saves all the element's attributes within an internal variable. _RestoreAllAttributes will restore the attributes from this internal variable.

This method is final in JET. Subclasses can override _RestoreAttributes and call _RestoreAllAttributes.

The JSON variable will be held as:

[
  {
  "element" : element[i],
  "attributes" :
    {
      attributes[m]["name"] : {"attr": attributes[m]["value"]
    }
  }
]
Parameters:
Name Type Description
element Object jQuery selection to save attributes for
Inherited From:
Source:

<protected> _SaveAttributes(element)

Saves all the element's attributes. In _destroy all attributes will be restored.

Parameters:
Name Type Description
element Object jQuery selection to save attributes for
Inherited From:
Source:

<protected> _SetDisabledDom(node)

Sets the disabled option onto the dom. Component subclasses can override this method to not do this in cases where it is invalid, like on a div (e.g., radioset's root dom element is a div).
Parameters:
Name Type Description
node Object dom node
Since:
  • 1.0.0
Inherited From:
Source:

<protected> _SetDisplayValue(displayValue)

Called when the display value on the element needs to be updated. This method updates the (content) element value. Widgets can override this method to update the element appropriately.
Parameters:
Name Type Description
displayValue String of the new string to be displayed
Inherited From:
Source:

<protected> _setOption(name, value, flags)

Called (by the widget factory) when the option changes, this method responds to the change by refreshing the component if needed. This method is not called for the options passed in during the creation of the widget.
Parameters:
Name Type Description
name string of the option
value Object | string
flags Object? optional flags. The following flags are currently supported:
  • changed - true if the caller wants to indicate the value has changed, so no comparison is necessary
Inherited From:
Source:

<protected> _SetPlaceholder(value)

Sets the placeholder text on the content element by default. It sets the placeholder attribute on the element. Component subclasses can override this method to control where placeholder text gets set.
Parameters:
Name Type Description
value string
Inherited From:
Source:

<protected> _SetPlaceholderOption(value)

Sets the placeholder option with the value.
Parameters:
Name Type Description
value string
Inherited From:
Source:

<protected> _SetRawValue(val, event)

Convenience function to set the rawValue option. Called by subclasses
Parameters:
Name Type Description
val String value to set rawValue to
event Event DOM event
Inherited From:
Source:

<protected> _SetRootAttributes()

Reads the rootAttributes option, and sets the root attributes on the component's root DOM element. See rootAttributes for the set of supported attributes and how they are handled.

Inherited From:
Source:
Throws:
if unsupported attributes are supplied.

<protected> _setupEvents()

Setup events for slider.
Source:

<protected> _SetupResources()

Sets up needed resources for this component, for example, add listeners. This is called during _create. _ReleaseResources will release resources help by this component, and is called during destroy.

This base class default implementation does nothing.

Component subclasses can opt in by overriding _SetupResources and _ReleaseResources.
Inherited From:
Source:

<protected> _SetValue(newValue, event, options) → {boolean}

Runs full validation on the newValue (usually the display value) and sets the parsed value on the component if value passes basic checks and there are no validation errors.
If the newValue is undefined or if it differs from the last saved displayValue this method skips validation and does not set value (same as ADF).
Parameters:
Name Type Argument Description
newValue string | Object the ui value that needs to be parsed before it's set.
event Object <optional>
an optional event if this was a result of ui interaction. For user initiated actions that trigger a DOM event, passing this event is required. E.g., if user action causes a 'blur' event.
options Object <optional>
an Object literal that callers pass in to determine how validation gets run.
Properties
Name Type Argument Description
doValueChangeCheck boolean <optional>
if set to true compare newValue with last displayValue before running validation; if false, always run validation. E.g., set to false when validate() is called.
doNotClearMessages boolean <optional>
if set method will not clear all messages. This is provided for callers that may want to clear only some of the messages. E.g., when required option changes, it clears only component messages, not custom.
validationMode number <optional>
accepted values (defined in _VALIDATION_MODE) are:
  • FULL - the default and runs both the converter and all validators.
  • VALIDATORS_ONLY - runs all validators including the required validator is run.
  • REQUIRED_VALIDATOR_ONLY - runs just the required validator.
Inherited From:
Source:
Returns:
false if value was not set due to validation error.
Type
boolean
Example

Widget subclasses can use this convention to run full validation

this._SetValue(value, event);

<protected> _UnregisterChildNode()

Remove all listener references that were attached to the element.
Inherited From:
Source:

<protected> _Validate(newValue, event, options) → {Object|string|undefined}

Runs full validation on the value. If value fails basic checks (see _CanSetValue, or if value failed validation, this method returns false. Otherwise it returns true.

Components should call this method if they know UI value has changed and want to set the new component value.

Parameters:
Name Type Argument Description
newValue string | Object the actual value to be set. Usually this is the string display value
event Object <optional>
an optional event if this was a result of ui interaction. For user initiated actions that trigger a DOM event, passing this event is required. E.g., if user action causes a 'blur' event.
options {doNotClearMessages:boolean,validationContext:number,validationMode:number} <optional>
an Object literal that callers pass in to determine how validation gets run.
Properties
Name Type Argument Description
doNotClearMessages boolean <optional>
if set method will not clear all messages. This is provided for callers that may want to clear only some of the messages. E.g., when required option changes, it clears only component messages, not custom.
validationContext number <optional>
the context this method was called. When not set it defaults to _VALIDATION_CONTEXT.USER_ACTION.
validationMode number <optional>
accepted values defined in _VALIDATION_MODE
Inherited From:
Source:
Returns:
the parsed value or undefined if validation failed
Type
Object | string | undefined

<protected> Focus() → {*}

Sets focus on the element that naturally gets focus. For example, this would be the input element for input type components.
Since:
  • 0.7
Inherited From:
Source:
Returns:
a truthy value if focus was set to the intended element, a falsey value otherwise.
Type
*