WIP implementing Iframe widget

api/js/etemplate/Et2Iframe/Et2Iframe.ts

@@ -0,0 +1,149 @@
+/**
+ * EGroupware eTemplate2 - Iframe widget (WebComponent)
+ *
+ * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
+ * @package etemplate
+ * @subpackage api
+ * @link https://www.egroupware.org
+ * @author Hadi Nategh
+ */
+
+
+import {css, html, LitElement, SlotMixin} from "@lion/core";
+import {Et2Widget} from "../Et2Widget/Et2Widget";
+
+export class Et2Iframe extends Et2Widget(SlotMixin(LitElement))
+{
+
+	static get styles()
+	{
+		return [
+			...super.styles,
+			css`
+			/* Custom CSS */
+			`,
+		];
+	}
+
+	static get properties()
+	{
+		return {
+			...super.properties,
+			label: {type: String},
+			seamless: {type: Boolean},
+			name: {type: String},
+			fullscreen: {type: Boolean},
+			needed: {type: Boolean},
+			src: {type:String},
+			allow: {type: String}
+		}
+	}
+
+	constructor(...args : any[])
+	{
+		super(...args);
+	}
+
+	connectedCallback()
+	{
+		super.connectedCallback();
+	}
+
+	render() {
+		return html` <iframe ${this.id ? html`id="${this.id}"` : ''}></iframe>`;
+	}
+
+	__getIframeNode()
+	{
+		return this.shadowRoot.querySelector('iframe');
+	}
+
+	/**
+	 * Set the URL for the iframe
+	 *
+	 * Sets the src attribute to the given value
+	 *
+	 * @param _value String URL
+	 */
+	set_src(_value)
+	{
+		if(_value.trim() != "")
+		{
+			if(_value.trim() == 'about:blank')
+			{
+				this.__getIframeNode().src = _value;
+			}
+			else
+			{
+				// Load the new page, but display a loader
+				let loader = jQuery('<div class="et2_iframe loading"/>');
+				this.__getIframeNode().before(loader);
+				window.setTimeout(function() {
+					this.__getIframeNode().src = _value;
+					this.__getIframeNode().addEventListener('load',function() {
+						loader.remove();
+					});
+				}.bind(this),0);
+
+			}
+		}
+	}
+
+	/**
+	 * Set name of iframe (to be used as target for links)
+	 *
+	 * @param _name
+	 */
+	set_name(_name)
+	{
+		this.options.name = _name;
+		this.__getIframeNode().attribute('name', _name);
+	}
+
+	set_allow (_allow)
+	{
+		this.options.allow = _allow;
+		this.__getIframeNode().attribute('allow', _allow);
+	}
+	/**
+	 * Make it look like part of the containing document
+	 *
+	 * @param _seamless boolean
+	 */
+	set_seamless(_seamless)
+	{
+		this.options.seamless = _seamless;
+		this.__getIframeNode().attribute("seamless", _seamless);
+	}
+
+	set_value(_value)
+	{
+		if(typeof _value == "undefined") _value = "";
+
+		if(_value.trim().indexOf("http") == 0 || _value.indexOf('about:') == 0 || _value[0] == '/')
+		{
+			// Value is a URL
+			this.set_src(_value);
+		}
+		else
+		{
+			// Value is content
+			this.set_srcdoc(_value);
+		}
+	}
+
+	/**
+	 * Sets the content of the iframe
+	 *
+	 * Sets the srcdoc attribute to the given value
+	 *
+	 * @param _value String Content of a document
+	 */
+	set_srcdoc(_value)
+	{
+		this.__getIframeNode().attribute("srcdoc", _value);
+	}
+}
+
+// @ts-ignore TypeScript is not recognizing that Et2Iframe is a LitElement
+customElements.define("et2-iframe", Et2Iframe);