Skip to main content
Version: v11.6.2

Custom

Custom Widget is used to add third party React Native Components to the project. This widget can be used only in Prefabs. By using Prefab properties and Events, Component properties and callback functions can be exposed and this prefab can be used in React Native applications.

danger

Custom Widget is available only in Prefabs for React Native apps.

Custom Widget

Properties​

PropertyDescription
NameThe name is a unique identifier for Custom Widget.
Add PropertyThis will add properties to Custom Widget
Layout
WidthThe width of your widget can be specified in px or % (i.e 50px, 75%).
HeightThe height of your widget can be specified in px or % (i.e 50px, 75%).
Behavior
ShowShowing determines whether or not a component is visible. It is a bindable property.
Custom Widget Properties

Adding Third party Native Libraries​

To add React Native Components, inside Config Prefab write the packange name and version as follows and add it to the scripts

using npm:
npm://package_name@package_version
using git:
npm://package_name@github:username/repository

Custom Widget Add Package

Adding the React Native Component as a Functional Component​

In Script tab, components can be written as functional component using javascript (i.e by using react.createElement) which returns the component.

require statements should be written inside the function, to import the Components

const react = require('react');
const calendar = require('react-native-swipeable-weekly-calendar');

Since Custom Widget will be available after Prefab.onReady, the component written should be passed to the renderview property of the Custom Widget.

Prefab.onReady = function() {
    Page.Widgets.custom1.renderview = renderCalendar;
};

Component can be written inside Script tab using React.createElement() function, and the properties can be added to Custom Widget using Add Property with a parameter(eg: prop as shown below).

syntax:
react.createElement(*FunctionalComponent*, {*Props*}, *ChildComponent*);

Properties of the imported Component can be exposed, by using the Prefab Property. In the code shown below props.date is a property added to Custom Widget using Add Property and bound it's value with Prefab.date which is a Prefab property.

Custom Widget Add PropertyCustom Widget Bind Property

Component Callback functions can also be implemented, In the code shown below onPressDate is the callback function which is exposed by triggering Prefab.onChange function which is Prefab Event.

note

Since the call back function executes inside the imported component, to update the changes inside Prefab refresh() function need to be used as shown below

function renderCalendar(props) {
    const react = require('react');
    const calendar = require('react-native-swipeable-weekly-calendar');
    return react.createElement(calendar.default, {
        date: props.date,
        onPressDate: (date) => {
            Prefab.onChange(date);
            Prefab.date = date;
            Prefab.refresh();
        },
        showMonth: true,
        language: "en"
    })
    return component;
}

Now this Prefab can be implemented in any React Native applications and use Prefab properties to control the Component.

Example​

React Native App​

Web Service​

Created a Web service with name randomuser with sample api https://randomuser.me/api?results=10

Variables​

Created a Model Variable people in Main page with Type as Entry and a Web Service Variable RandomuserInvoke for above web service randomuser

Markup​

<wm-page name="mainpage">
    <wm-content name="content1">
        <wm-page-content columnwidth="12" name="page_content1" backgroundcolor="#ffffff">
            <wm-prefab prefabname="calendar" name="calendar1" on-change="calendar1Change($event, $data, newVal, oldVal)" width="100%" height="150"></wm-prefab>
            <wm-list listclass="list-group" itemclass="list-group-item" template="true" template-name="Text with Avatar List" itemsperrow="xs-1 sm-1 md-1 lg-1" class="media-list" statehandler="URL" name="randomuserList1" dataset="bind:Variables.people.dataSet" navigation="Pager"
                itemkey="bind:Variables.people.dataSet[$i].email">
                <wm-listtemplate layout="inline" name="listtemplate2">
                    <wm-linearlayout direction="row" horizontalalign="left" spacing="12" padding="12px" verticalalign="center" name="linearlayout3">
                        <wm-linearlayoutitem name="linearlayoutitem6">
                            <wm-picture width="58px" height="58px" name="Picture" picturesource="bind:Variables.people.dataSet[$i].picture.large" shape="circle" resizemode="cover" class="media-object"></wm-picture>
                        </wm-linearlayoutitem>
                        <wm-linearlayoutitem flexgrow="1" name="linearlayoutitem7">
                            <wm-linearlayout direction="column" name="linearlayout4">
                                <wm-linearlayoutitem name="linearlayoutitem8">
                                    <wm-label name="Title" caption="bind:Variables.people.dataSet[$i].name.first" class="h4" fontweight="bold"></wm-label>
                                </wm-linearlayoutitem>
                                <wm-linearlayoutitem name="linearlayoutitem9">
                                    <wm-label name="SubTitle" caption="bind:Variables.people.dataSet[$i].email" class="h5"></wm-label>
                                </wm-linearlayoutitem>
                            </wm-linearlayout>
                        </wm-linearlayoutitem>
                        <wm-linearlayoutitem width="25px" name="linearlayoutitem10">
                            <wm-icon iconclass="wi wi-more-vert" iconsize="22px" name="icon2"></wm-icon>
                        </wm-linearlayoutitem>
                    </wm-linearlayout>
                </wm-listtemplate>
            </wm-list>
        </wm-page-content>
    </wm-content>
</wm-page>

Script​

Page.onReady = function() {
    Page.calendar1Change(new Date());
};
Page.calendar1Change = function(data) {
    let day = new Date(data).getDate();
    Page.Variables.people.dataSet = [];
    for (var i = 0; i < 3; i++) {
        if ((day + i) % 8 === 0) {
            continue;
        }
        Page.Variables.people.dataSet.push(
            Page.Variables.RandomuserInvoke.dataSet.results[day + i]
        );
    }
    Page.Widgets.randomuserList1.refresh();
    Page.refresh();
};

Prefab​

Configuration​

Add Prefab UI Property Date with Binding Type as in-bound and Data Type as date

Custom Widget Prefab Properties

Add an Event onChange in Events section.

Custom Widget Prefab Event

Markup​

<wm-prefab-container name="prefab_container1">
    <wm-custom name="custom1" dateparam="bind:date"></wm-custom>
</wm-prefab-container>

Script​

Prefab.onPropertyChange = function(key, newVal, oldVal) {};

Prefab.onReady = function() {
    Prefab.date = new Date();
    if (Prefab.Widgets.custom1) {
        Prefab.Widgets.custom1.renderview = renderCalendar;
    }
};

function renderCalendar(props) {
    const react = require('react');
    const calendar = require('react-native-swipeable-weekly-calendar');

    return react.createElement(calendar.default, {
        date: Prefab.date,
        onPressDate: (date) => {
            Prefab.onChange(date);
            Prefab.date = date;
            Prefab.refresh();
        },
        showMonth: true,
        language: "en"
    });
}

Preview​