Widgets

Widget is a UI element that is placed inside a widget container. Most widgets are backend actions.

Examples of widgets are: contact information, opportunity information, address book, add address form, import form, workflow transitions, etc.

Widget container is part of UI where widgets are shown. A Widget Container can show different types of widgets.

Examples of implemented BAP widget containers:

• Dialog windows

• Buttons

• Content blocks

Goals

Widgets are created to give developers the ability to use one content inside different containers on frontend.

HTML can be used as content (a fragment of a page or the whole page) generated separately by the method of a controller.

System may have different containers: dialog windows, blocks, etc. Also widgets provides additional functionality around widget content: remote content loading, widget actions handling, embedded forms processing. Widget manager adds the ability of widget-to-widget, widget-to-page and page-to-widget interaction based on Backbone events and direct usage of widgets API. Each widget on page has a unique widget identifier.

JS Modules Services

• oroui/js/widget-manager - Widget manager

• oro/block-widget - Block widget

• oro/buttons-widget - Buttons widget

• oro/dialog-widget - Dialog widget

• oroui/js/widget/abstract-widget - Abstract widget, cannot be used standalone

Widgets

Widget is any controller/action or static content rendered inside the widget container. @Template annotation supports the _widgetContainer request variable, based on which an appropriate template is chosen by the following rule:

<widgetContainer>/<action>.<format>.<templateEngine> (dialog/example.html.twig).

When no template for a specific container is found, the widget/<action>.<format>.<templateEngine> (widget/example.html.twig) template is rendered.

If no such template is found, then the default template for action is rendered (example.html.twig). Widgets may be rendered with twig function oro_widget_render($options).

Twig template for the widget content must have a div element with class widget-content as its root element for the widget to work properly with other elements on the page:

<div class="widget-content">

Frontend Widget Container

Responsibilities

A widget container is responsible for displaying a widget, and loading widget data from the server. Widget containers are Backbone views, so you can use all Backbone views features, like events. You need to place widget content inside element with class widget-content. Widget container adds AJAX handling for included form. A widget container provides the functionality for actions with different action areas. All form actions are moved to the adopted actions section if they are placed in an element with class widget-actions.

Widget container adds _widgetContainer=<widgetContainerType>&_wid=<widgetIdentifier> to all requests.

• _widgetContainer variable is used to determine the proper template for the current container;

• _wid variable can be used by widget to get an instance of a widget container from the widget manager.

Containers

• Dialog window showns widget content in a dialog window

• Button shows only included content without a title or actions

• Block displays embedded widget content on a page

API

abstract-widget.js options

• type - widget type name

• el - widget element selector (inherit from Backbone.View options)

• actionsEl - selector or element from which widget actions will be adopted

• url - URL used to load remote content

• elementFirst - flag, if set and both element and url are given then on first load element content will be used to render widget without AJAX request

• title - widget title

• alias - widget alias

• wid - unique widget identifier

• loadingMaskEnabled - flag, indicated enabled state of loading mask

• loadingElement - element, hidden under loading mask. By default el is used. To hide the whole page, use the ‘body’ selector.

abstract-widget.js events

Widget container events:

• widgetRemove - triggered when widget is removed

• adoptedFormSubmitClick - triggered when adopted form submit button is clicked

• adoptedFormResetClick - triggered when adopted form reset button is clicked

• adoptedFormSubmit - triggered when adopted form is submitted

• reset - triggered when adopted form is reset

• beforeContentLoad - triggered before content loading started

• contentLoad - triggered on content load

• contentLoadError - triggered in case of content loading error

• widget:add:action:section:action_key - triggered when action is added, triggered when action is added, section is action section name passed to addAction method, section is action section name passed to addAction method, action_key is action name passed to addAction method

• renderStart - triggered before widget rendering

• widgetRender - triggered on widget rendering

• renderComplete - triggered on widget rendering complete

Global events triggered on mediator:

• widget_remove - triggered on mediator when widget is removed

• widget_initialize - triggered on mediator when widget is created

• widget:render:wid - triggered on widget render, wid is widget identifier string

abstract-widget.js Methods

addAction(key, section, actionElement)

Add action element to specified section

Parameters:

Name	Type	Description
key	string	action name
section	string	section name
actionElement	HTMLElement

getAction(key, section, callback)

Get action element when after render.

Parameters:

Name	Type”	Description
key	string	action name
section	string	section name
callback	function	callback method for processing action element

getActions() → {Object}

Get all registered actions

Returns: Type: Object

getActionsElement()

Get actions container element

getAlias() → {string|null}

Get widget alias

Returns: Type: string or null

getWid() → {string}

Get unique widget identifier

Returns: Type: string

hasAction(key, section) → {boolean}

Check action availability.

Parameters:

Name	Type	Description
key	string	action name
section	string	section name

Returns: Type: boolean

initializeWidget()

Initialize

loadContent(data, method)

Load content

Parameters:

Name	Type	Description
data	Object or null
method	String or null

remove()

Remove widget

removeAction(key, section)

Remove action from section

Parameters:

Name	Type	Description
key	string	action name
section	string	section name

render()

Render widget

setTitle(title)

Set widget title.

Parameters:

Name	Type	Description
title	string

setUrl(url)

Set url

Parameters:

Name	Type	Description
url	string

setWidToElement(el)

Add data-wid attribute to the given element.

Parameters:

Name	Type	Description
el	HTMLElement

show()

General implementation of show logic.

block-widget.js options

• titleContainer - selector for title container inside template

• contentContainer - selector for content container inside template

• contentClasses - additional CSS classes added to content element

• template - widget underscore template

dialog-widget.js options

• dialogOptions - Extended ui.dialog options

• stateEnabled - flag, enables window state saving, enabled by default

• incrementalPosition - flag, enables window incremental positioning, enabled by default

• mobileLoadingBar: flag, enables loading bar for dialog on mobile devices, enabled by default

• desktopLoadingBar: flag, enables loading bar for dialog on desktop, disabled by default

Frontend Widget Manager

Responsibilities

Widget manager is a mediator that allow different parts of system, including widgets themselves, interact with widget container instances by unique widget identifier or by widget alias. Widget manager contains registry of all widget container instances present on page.  Widget instance registering/removing performed automatically on widget_initialize/widget_remove events.

Interaction Example

Let’s assume that a widget needs to trigger a formSave event when a form is successfully saved.

Page content

<div id="poll-widget" {{ UI.renderPageComponentAttributes({
    'module': 'your/widget/creator'
})></div>

Create a js module that creates widget 'your/widget/creator' as shown in the example below; please remember to add this module to the list of dynamic-imports in jsmodules.yml.

import widgetManager from 'oroui/js/widget-manager';
import BlockWidget from 'oro/block-widget';

export default function(options) {
    var widgetInstance = new BlockWidget({
        el: '#poll-widget',
        url: '/my-poll-widget',
        title: 'Satisfaction survey'
    });
    addWidgetInstance.render();

    widgetInstance.on('formSave', function() {
        alert('Form saved');
    });
}

Widget content

<div class="widget-content">
    <form action="/my-poll-widget" method="post">
        <label for="variant">Are you satisfied</label>
        <select name="variant" id="variant">
            <option value="yes">Yes</option>
            <option value="no">No</option>
        </select>

        <div class="widget-actions">
            <button type="submit">Vote</button>
        </div>
    </form>

    {% if isSaved %}
    <div {{ UI.renderPageComponentAttributes({
         'module': 'your/widget/handler',
         'options': {wid: app.request.get('_wid')}
    })></div>
    {% endif %}
</div>

Create a js module with the handler definition 'your/widget/handler' as shown in the example below; please remember to add this module to the list of 1`dynamic-imports1` in 1jsmodules.yml1.

import widgetManager from 'oroui/js/widget-manager';

export default function(options) {
    widgetManager.getWidgetInstance(options.wid, widget => {
        widget.trigger('formSave');
    });
}

API

widget-manager.js Events

Global events triggered on mediator:

• widget_registration:wid: - triggered when widget instance added

widget-manager.js Methods

• resetWidgets() - Reset manager to initial state.

• addWidgetInstance(widget) - Add widget instance to registry.

Parameters:

Name	Type	Description
widget	oroui.widget.AbstractWidget	widget instance

• getWidgetInstance(wid, callback) - Get widget instance by widget identifier and pass it to callback when became available.

Parameters:

Name	Type	Description
wid	string	unique widget identifier
callback	function	widget handler

• getWidgetInstanceByAlias(alias, callback) - Get widget instance by alias and pass it to callback when became available.

Parameters:

Name	Type	Description
alias	string	widget alias
callback	function	widget handler

• removeWidget(wid) - Remove widget instance from registry.

Parameters:

Name	Type	Description
wid	string	unique widget identifier

Backend

Widget Context Provider

Widget Context Provider provides the possibility to know the current context of the application during rendering. It enables you to customize the application based on the current context. It is registered as DI service named oro_ui.provider.widget_context1. You can inject it as a global variable for twig templates.

API

isActive

Returns whether current widget context is in active state.

getWid

Returns unique widget identifier if widget context is active or FALSE otherwise.