# HTML HTML (Custom Elements)

ActiveWidgets offers HTML5/CustomElements package @activewidgets/html for use with the frameworks where we don't have yet the framework-specific components (for example Svelte, AngularJS or Polymer/lit-element).

ATTENTION!

This package requires dependencies under ⚠️ FREE TRIAL/COMMERCIAL license. You have to purchase a license (opens new window) for each developer in your team before including this package in your application.

# Installation

Add @activewidgets/html to your project dependencies -

> npm i --save @activewidgets/html

# Usage

Import the library into your app to register the custom element tags -

import "@activewidgets/html";

The ax-... tags will now function as ActiveWidgets components.

<ax-datagrid>Loading...</ax-datagrid>

You can then assign properties and event handlers using standard DOM API.

const el = document.querySelector('ax-datagrid');

el.rows = [
    { message: 'Hello, World!' }
];

Live example | Source on github (opens new window) | Edit on Codesandbox (opens new window)

For quick prototyping the package is also available over ActiveWidgets CDN -

<script src="https://cdn.activewidgets.com/html"></script>

Live example | Source on github (opens new window) | Edit on Codesandbox (opens new window)

# Data properties

You have to provide columns and rows properties to the datagrid to show some data. The properties of each column object define how the data will be rendered -

  • field - where the cell data comes from (string|function)
  • header - column header (string|object)
  • width - column width (number, in pixels)
  • align - cell text alignment (left|right|center)
  • format - number/date format (string|function)
  • fixed - fixed (true/false) for columns on the left or right side

The style (string|object) or className properties allow to change the styling of the column and cell elements.

const el = document.querySelector('ax-datagrid');

el.columns = [
  { header: 'Code', field: 'customerID', width: 80, style: 'background:#def', fixed: true },
  { header: 'Company Name', field: 'companyName', width: 160 },
  { header: 'Contact', field: 'contactName', width: 120 },
  { header: 'Title', field: 'contactTitle', width: 120 },
  { header: 'Address', field: 'address', width: 120, align: 'right' }
];

el.rows = northwind.customers;

Live example | Source on github (opens new window) | Edit on Codesandbox (opens new window)

# User events

In addition to the standard DOM keyboard and mouse events the datagrid emits composite mouse event which makes it easier to find the elements affected by the user action.

function onMouse({row}){
    alert(`row ${row.key} clicked!`);
}

const el = document.querySelector('ax-datagrid');

el.columns = columns;
el.rows = rows;

el.addEventListener('mouse', event => onMouse(event.detail), true);

Live example | Source on github (opens new window) | Edit on Codesandbox (opens new window)

When assigning an event handler, note that the event data is passed in the event.detail property (we are using DOM CustomEvent class).

ActiveWidgets custom events do not bubble, so you should always add an event handler at the component itself, not at some parent element.

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