Class: ojPopup

Oracle® JavaScript Extension Toolkit (JET)
2.0.0

E70325-01

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oj. ojPopup extends oj.baseComponent

Version:
  • 2.0.0

JET Popup Component

Description: Themeable, WAI-ARIA-compliant popup that can display arbitrary content.

A JET popup can be created from a block ( <div> ) or inline element ( <span> ). This element will become the immediate child of the content element. Dynamic content can be inserted under this element.

<span id="popup">
  Hello World!
</span>

For WAI-ARIA compliance, JET automatically adds role="tooltip" to the root popup dom element by default. The role option controls the WAI-ARIA role. The popup also adds the aria-describedby="popup-id" to the launcher while the popup is open.

Touch End User Information

Target Gesture Action
Outside popup or launcher Tap Close the popup.

Disabled items do not allow any touch interaction.

Keyboard End User Information

Target Key Action
Focus within Popup Tab or Shift + Tab Navigate the content of the popup. Close the open popup if there are no tab stops in the popup.
F6 Move focus to the launcher for a popup with modeless modality. Close the open popup if the modality is modal.
Esc Close the open popup.
Popup Launcher F6 Move focus to the first tab stop within the open popup. If there is not a tab stop within the content, focus is established on the popup.


Accessibility

One point often overlooked is making the gestures that launch a popup accessible. There are no constraints to what events a page developer might choose to trigger opening a popup. The choice should be accessible for screen reader users. Page developers should take care when using mouse events to trigger opening of a popup. This is especially important if the content of the popup can't be derived from other visible areas on the page. In cases that mouseover, mouseout, mouseenter, mouseleave and hover events are used to launch popups, there needs to be a keyboard functional equivalency.

Reparenting

When popups are open, they will be reparented in the document and reparented back when closed. When open, the location of the popup within the document will be in context of how it's used. Popups open from other popups will be relocated in the document into the nearest parent popup's layer. The popups layer defines its z-index weight "stacking context". The ojPopup's layer is marked with the "oj-popup-layer" style. The context of opening is defined by the launcher argument passed to the open method. If not open from another popup, the popup will be reparented to a container in the document body. Popups of the same type are assigned the same z-index values. The layering between peer popups reflect the opening order. The popup that has active focus will be assigned a greater z-index value. This is applied to the popup's layer by way of the "oj-focus-within" pseudo selector applied with "oj-popup-layer" selector. The page author has control over z-index weights by way of the "oj-popup-layer" selector.

There are known caveats with this design. However, these scenarios are considered "bad use" based on our JET popup strategy.

  1. Events raised within the popup will not bubble up to the popup's original ancestors. Instead, listeners for popup events should be applied to either the popup's root element, or the document.
  2. Likewise, developers should not use CSS descendant selectors, or similar logic, that assumes that the popup will remain a child of its original parent.
  3. Popups containing iframes are problematic. The iframe elements "may" fire a HTTP GET request for its src attribute each time the iframe is reparented in the document.
  4. In some browsers, reparenting a popup that contains elements having overflow, will cause these overflow elements to reset their scrollTop.

Event Handling

  • beforeClose(event, ui) - Triggered before a popup closes. Event can prevent closing the popup; However, there are cases the framework must veto, such as when the popup is destroyed.
  • beforeOpen(event, ui) - Triggered before a popup closes. Event can prevent opening the popup.
  • close(event, ui) - Triggered after the popup has closed.
  • create(event, ui) - Triggered after the component has been bound to an associated dom element.
  • focus(event, ui) - Triggered when initial focus is established on opening, depending on the value of the initalFocus option, or F6 focus toggle from the associated launcher.
  • open(event, ui) - Triggered after the popup has been made visible.

Initializer

.ojPopup(options)

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

Initialize the popup with no options specified:

$( ".selector" ).ojPopup();

Initialize the popup with behaviors of a notewindow:

$( ".selector" ).ojPopup({initialFocus: 'none', autoDismiss: 'focusLoss', tail: 'simple'});

Initialize a popup via the JET ojComponent binding:

<div id="popup1" data-bind="ojComponent: {component: 'ojPopup'}">This is a popup!</div>

Options

autoDismiss :string

Defines conditions that will cause an open popup to auto close dismiss. A value of focusLoss defines the dismissal condition where focus has left the content of the popup or from the associated launcher or if what the popup is aligned to is not fully visible within an overflow area.
Supported Values:
Name Type Description
"none" string disables auto dismissal behaviors.
"focusLoss" string defines auto dismissal behavior when focus leaves the content of the popup or associated launcher. In addition, if what the popup is positioned to is clipped within an overflow area, the popup will auto close dismiss.
Default Value:
  • "focusLoss"
Source:
Examples

Initialize the popup with autoDismiss option specified:

$( ".selector" ).ojPopup( { "autoDismiss": "focusLoss" } );

Get or set the autoDismiss option, after initialization:

// getter
var autoDismiss = $( ".selector" ).ojPopup( "option", "autoDismiss" );
// setter
$( ".selector" ).ojPopup( "option", "autoDismiss", "none" );

chrome :string

Defines the presents of border, shadow and background color of the root popup dom. Value of none applies the oj-popup-no-chrome selector defined by the active theme to the root dom of the popup to remove the default chrome.
Supported Values:
Name Type Description
"default" string describes the popups border, shadow, and background color defined by the active theme.
"none" string turns off the outer chrome defined by the active theme.
Default Value:
  • "default"
Source:
Examples

Initialize the popup with chrome option specified:

$( ".selector" ).ojPopup( { "chrome": "none" } );

Get or set the chrome option, after initialization:

// getter
var chrome = $( ".selector" ).ojPopup( "option", "chrome" );

// setter
$( ".selector" ).ojPopup( "option", "chrome", "none" );

contextMenu :Object

JQ selector identifying 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.

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.

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

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

initialFocus :string

Determines if the popup should steal focus to its content when initially open. A value of none prevents the popup from grabbing focus when open.
Supported Values:
Name Type Description
"auto" string option is derived from the values of the modality and autoDismiss options
"none" string prevents the popup from stealing focus when open.
"firstFocusable" string defines that a popup should grab focus to the first focusable element within the popup's content.
"popup" string focus to the root popup container (good choice for touch platforms).
Default Value:
  • "auto"
Source:
Examples

Initialize the popup with initialFocus option specified:

$( ".selector" ).ojPopup( { "initialFocus": "none" } );

Get or set the initialFocus option, after initialization:

// getter
var initialFocus = $( ".selector" ).ojPopup( "option", "initialFocus" );

// setter
$( ".selector" ).ojPopup( "option", "initialFocus", "none" );

modality :string

Determines if the popup should block user input of the page behind with a blocking overlay pane.

The default modality varies by theme. Each theme can set its default by setting $popupModalityOptionDefault as seen in the example below.

Supported Values:
Name Type Description
"modeless" string defines a modeless popup.
"modal" string The popup is modal. Interactions with other page elements are disabled. Modal popups overlay other page elements.
Default Value:
  • Varies by theme. "modless" if not specified in theme
Source:
Examples

Initialize the popup to have modality modality

$(".selector" ).ojPopup( {modality: "modal" } );

Get or set the modality option, after initialization:

// getter
var modality = $(".selector" ).ojPopup( "option", "modality" );

// setter
$(".selector" ).ojPopup( "option", "modality", "modal");

Set the default in the theme (SCSS) :

$popupModalityOptionDefault: modal !default;

oj.ojpopup#widget

Returns a jQuery object containing the generated wrapper. This method does not accept any arguments.
Source:
Example

Invoke the widget method:

var widget = $( ".selector" ).ojPopup( "widget" );

position :Object

Position object is defined by the jquery position API and is used to establish the location the popup will appear relative to another element. The position object contains the following properties: "my", "at", "of", "collision", "using" and "within".

The "my" and "at" properties defines aligment points relative to the popup and other element. The "my" property represents the popups alignment where the "at" property represents the other element that can be identified by "of" or defauts to the launcher when the popup opens. The values of these properties describe a "horizontal vertical" location.

Acceptable "horizontal" alignments values are: "right", "center", "left", "start", "end". Note: Jet has added "start" and "end" options to be more RTL friendly. The Jet values of "start" and "end" normalize to "right" or "left" depending on the direction of the document.

Acceptable "vertical" alignment values are: "top", "center" and "bottom".

The following is a short summary of the most interesting positon properties:
  • my - A "vertical horizontal" rule that defines the location of the popup used for alignment.
  • at - A "vertical horizontal" rule that defines the location of the other element for used alignment. The other element is defined by "of" or defaults to the open launcher argument if not specified.
Default Value:
  • {my: "start top", at: "start bottom", collision: "flip"}
Source:
Examples

Initialize the popup with position option specified:

$( ".selector" ).ojPopup( { "position": {"my": "left top", "at": "right top"} } );

Get or set the position option, after initialization:

// getter
var position = $( ".selector" ).ojPopup( "option", "position" );

// setter
$( ".selector" ).ojPopup( "option", "position", {"my": "start bottom", "at": "end+14 top" } );

position.at :string

Defines which position on the target element ("of") to align the positioned element against: "horizontal vertical" alignment. See the my option for full details on possible values. Percentage offsets are relative to the target element.
Default Value:
  • start bottom
Source:

position.collision :string

When the positioned element overflows the window in some direction, move it to an alternative position. Similar to my and at, this accepts a single value or a pair for horizontal/vertical, e.g., "flip", "fit", "fit flip", "fit none".
  • "flip": Flips the element to the opposite side of the target and the collision detection is run again to see if it will fit. Whichever side allows more of the element to be visible will be used.
  • "fit": Shift the element away from the edge of the window.
  • "flipfit": First applies the flip logic, placing the element on whichever side allows more of the element to be visible. Then the fit logic is applied to ensure as much of the element is visible as possible.
  • "none": Does not apply any collision detection.
Default Value:
  • flip
Source:

position.my :string

Defines which position on the popup to align with the target ("of") element: "horizontal vertical" alignment. A single value such as "right" will be normalized to "right center", "top" will be normalized to "center top" (following CSS convention). Acceptable horizontal values: "left", "center", "right". Acceptable vertical values: "top", "center", "bottom". Example: "left top" or "center center". Each dimension can also contain offsets, in pixels or percent, e.g., "right+10 top-25%". Percentage offsets are relative to the popup being positioned.
Default Value:
  • start top
Source:

position.of :string

Which element to position the popup against. The default is the launcher argument passed to the open method. If you provide a selector or jQuery object, the first matching element will be used. If you provide an event object, the pageX and pageY properties will be used.
Default Value:
  • ''
Source:

role :string

The WAI-ARIA role of the popup. By default, role="tooltip" is added to the generated HTML markup that surrounds the popup.
Supported Values:
Name Type Description
"tooltip" string defines contextual popup that displays a description for an element.
"dialog" string defines an application window that is designed to interrupt the current processing of an application in order to prompt the user to enter information or require a response.
"alertdialog" string defines type of dialog that contains an alert message, where initial focus goes to an element within the dialog.
Default Value:
  • "tooltop"
Source:
Examples

Initialize the popup with the role option specified:

$(".selector" ).ojPopup( {role: "alertdialog" } );

Get or set the role option, after initialization:

// getter
var role = $(".selector" ).ojPopup( "option", "role" );

// setter
$(".selector" ).ojDialog( "option", "role", "alertdialog");

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" );

tail :string

Determines if a decoration will be displayed from the popup that points to the element the popup is aligned to. The simple value enables the tail defined by the current theme. In addtion, the oj-popup-tail-simple selector will be applied to the root dom element. This is to allow the box-shadow, z-index and other chrome styling to vary per tail decoration.
Supported Values:
Name Type Description
"none" string no decoration will be displayed from the popup pointing to the launcher.
"simple" string enables showing the tail defined by the current theme.
Default Value:
  • "none"
Source:
Examples

Initialize the popup with tail option specified:

$( ".selector" ).ojPopup( { "tail": "simple" } );

Get or set the tail option, after initialization:

// getter
var tail = $( ".selector" ).ojPopup( "option", "tail" );

// setter
$( ".selector" ).ojPopup( "option", "tail", "simple" );

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" } );

Events

#beforeClose

Triggered before the popup is dismissed via the close() method. The close can be cancelled by calling event.preventDefault().
Properties:
Name Type Description
event Event jQuery event object
ui Object currently empty
Source:
Examples

Initialize the popup with the beforeClose callback specified:

$( ".selector" ).ojPopup({
    "beforeClose": function( event, ui ) {}
});

Bind an event listener to the ojbeforeclose event:

$( ".selector" ).on( "ojbeforeclose", function( event, ui ) {} );

#beforeOpen

Triggered before the popup is launched via the open() method. The launch can be cancelled by calling event.preventDefault().
Properties:
Name Type Description
event Event jQuery event object
ui Object currently empty
Source:
Examples

Initialize the popup with the beforeOpen callback specified:

$( ".selector" ).ojPopup({
    "beforeOpen": function( event, ui ) {}
});

Bind an event listener to the ojbeforeopen event:

$( ".selector" ).on( "ojbeforeopen", function( event, ui ) {} );

#close

Triggered after the popup is dismissed via the close() method.
Properties:
Name Type Description
event Event jQuery event object
ui Object currently empty
Source:
Examples

Initialize the popup with the close callback specified:

$( ".selector" ).ojPopup({
    "close": function( event, ui ) {}
});

Bind an event listener to the ojclose event:

$( ".selector" ).on( "ojclose", function( event, ui ) {} );

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) {
      window.console.log("The DOM node id for the destroyed component is : %s", event.target.id);
  };
});

#focus

Triggered after focus has been transfered to the popup. This will occur after the open() method is called, depending on the value of the initialFocus option. It's also triggered when using the F6 key to toggle focus from the associated launcher element to the content of the popup.
Properties:
Name Type Description
event Event jQuery event object
ui Object currently empty
Source:
Examples

Initialize the popup with the focus callback specified:

$( ".selector" ).ojPopup({
    "focus": function( event, ui ) {}
});

Bind an event listener to the ojfocus event:

$( ".selector" ).on( "ojfocus", function( event, ui ) {} );

#open

Triggered after the popup is launched via the open() method.
Properties:
Name Type Description
event Event jQuery event object
ui Object currently empty
Source:
Examples

Initialize the popup with the open callback specified:

$( ".selector" ).ojPopup({
    "open": function( event, ui ) {}
});

Bind an event listener to the ojopen event:

$( ".selector" ).on( "ojopen", function( event, ui ) {} );

optionChange

Triggered when any option changes. The event payload has the following properties:

Properties:
Name Type Description
event Event jQuery event object
data Object event payload
Properties
Name Type 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.
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, data) {}
});

Bind an event listener to the ojoptionchange event

$(".selector").on({
  'ojoptionchange': function (event, data) {
      window.console.log("option that changed is: " + data['option']);
  };
});

Methods

#close() → {void}

Closes the popup. This method does not accept any arguments.
Source:
Fires:
Returns:
Type
void
Example

Invoke the close method:

var close = $( ".selector" ).ojPopup( "close" );

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 subId was provided but no corresponding node can be located, then this method returns null. For more details on subIds, see the subIds section.

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.

Subclasses of this component may support additional fields of the locator Object, to further specify the desired node.

Inherited From:
Source:
Returns:
The DOM node located by the subId string passed in 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'} );

#isOpen() → {boolean}

Returns the state of whether the popup is currently open. This method does not accept any arguments.
Source:
Returns:
true if the popup is open.
Type
boolean
Example

Invoke the isOpen method:

var isOpen = $( ".selector" ).ojPopup( "isOpen" );

#open(launcher, position) → {void}

Opens the popup. This method accepts two arguments but both are optional.
Parameters:
Name Type Argument Description
launcher string | jQuery | Element <nullable>
jquery object, jquery selector or dom element that is associated with the popup.
position Object <nullable>
an element relative to another
Source:
Fires:
Returns:
Type
void
Example

Invoke the open method:

var open = $( ".selector" ).ojPopup( "open" );

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() → {void}

Causes the popup to reevaluate its position. Call this function after the content of the popup has dynamically changed while the popup is open.

This method does not accept any arguments.

Source:
Returns:
Type
void
Example

Invoke the refresh method:

$( ".selector" ).ojPopup( "refresh" );

Non-public Methods

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

<protected> _activeable(element)

Sets the oj-active class on mousedown and removes it on mouseup. oj-active is one of JET's 'marker' style classes. It emulates the css :active pseudo-class.

Unlike _hoverable() and _focusable(), this is an original JET method not inherited from JQUI. (Obviously inspired by those methods.)

Typically the specified element should be within the component subtree, in which case the class 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 class 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 class at the times listed above.

Parameters:
Name Type Description
element jQuery The element to receive the oj-active class when pressed
Inherited From:
Source:

<protected> _AfterCreate()

This method is called after _ComponentCreate, but before the create event is fired. The JET base component does tasks here that must happen after the component (subclass) has created itself in its override of _ComponentCreate. Notably, the base component handles the rootAttributes and contextMenu options here, since those options operate on the component root node, which for some components is created in their override of _ComponentCreate.

Subclasses should override this method only if they have tasks that must happen after a superclass's implementation of this method, e.g. tasks that must happen after the context menu is set on the component.

Overrides of this method should call this._super first.

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> _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() → {void}

Source:
Returns:
Type
void

<protected> _create()

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

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<protected> #_destroy() → {void}

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Type
void

<protected> _focusable(element)

Sets the oj-focus class when the element is focused and removes it when focus is lost.

Overridden to set the oj-focus class instead of JQUI's hard-coded ui- class, and eliminate JQUI's caching.

Typically the specified element should be within the component subtree, in which case the class 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 class 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 class at the times listed above.

Parameters:
Name Type Description
element jQuery The element to receive the oj-focus class on focus
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<protected> _getCreateOptions()

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

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<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"
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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
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Returns:
savedAttributes - attributes that were saved for this element in _SaveAttributes, or null if none were saved.
Type
Object | null

<protected> _hoverable(element)

Sets the oj-hover class when the element is hovered and removes it when the hover ends.

Overridden to set the oj-hover class instead of JQUI's hard-coded ui- class, and eliminate JQUI's caching.

Typically the specified element should be within the component subtree, in which case the class 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 class 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 class at the times listed above.

Parameters:
Name Type Description
element jQuery The element to receive the oj-hover class on hover
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<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)

This method is called before _ComponentCreate, at which point the component has not yet been rendered. Component options should be initialized in this method, so that their final values are in place when _ComponentCreate is called.

This includes getting option values from the DOM, where applicable, and coercing option values (however derived) to their appropriate data type if needed.

No work other than setting options should be done in this method. In particular, nothing should be set on the DOM until _ComponentCreate, e.g. setting the disabled DOM attribute from the disabled option.

A given option (like disabled) appears in the constructorOptions param iff the app set it in the constructor:

  • If it appears in constructorOptions, it should win over what's in the DOM (e.g. disabled DOM attribute). If for some reason you need to tweak the value that the app set, then enable writeback when doing so: this.option('foo', bar, {'_context': {writeback: true, internalSet: true}}).
  • If it doesn't appear in constructorOptions, then that option definitely is not bound, so writeback is not needed. So if you need to set the option (e.g. from a DOM attribute), use this.option('foo', bar, {'_context': {internalSet: true}}).

Overrides of this method should call this._super first.

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

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

<protected> _NotifyAttached()

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

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<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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<protected> _NotifyDetached()

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

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<protected> _NotifyHidden()

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

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<protected> _NotifyShown()

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

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<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> _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.

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<protected> _RestoreAttributes()

Restore the attributes saved in _SaveAttributes.

_SaveAttributes is called during _create. And _RestoreAttributes is called during _destroy.

This base class default implementation does nothing.

We also have _SaveAllAttributes and _RestoreAllAttributes methods that save and restore all the attributes on an element. Component subclasses can opt into these _SaveAllAttributes/_RestoreAllAttributes implementations by overriding _SaveAttributes and _RestoreAttributes to call _SaveAllAttributes/_RestoreAllAttributes. If the subclass wants a different implementation (like save only the 'class' attribute), it can provide the implementation itself in _SaveAttributes/_GetSavedAttributes/_RestoreAttributes.

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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"], "prop": $(element[i]).prop(attributes[m]["name"])
    }
  }
]
Parameters:
Name Type Description
element Object jQuery selection to save attributes for
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<protected> _SaveAttributes(element)

Saves the element's attributes. This is called during _create. _RestoreAttributes will restore all these attributes and is called during _destroy.

This base class default implementation does nothing.

We also have _SaveAllAttributes and _RestoreAllAttributes methods that save and restore all the attributes on an element. Component subclasses can opt into these _SaveAllAttributes/_RestoreAllAttributes implementations by overriding _SaveAttributes and _RestoreAttributes to call _SaveAllAttributes/_RestoreAllAttributes. If the subclass wants a different implementation (like save only the 'class' attribute), it can provide the implementation itself in _SaveAttributes/_RestoreAttributes.

Parameters:
Name Type Description
element Object jQuery selection to save attributes for
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<protected> #_setOption(key, value)

Parameters:
Name Type Argument Description
key string option name
value Object <nullable>
of the target option identified by the key
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<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.

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Throws:
if unsupported attributes are supplied.

<protected> _UnregisterChildNode()

Remove all listener references that were attached to the element.
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