first commit

components/com_wrapper/tmpl/wrapper/default.php

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+<?php
+
+/**
+ * @package     Joomla.Site
+ * @subpackage  com_wrapper
+ *
+ * @copyright   (C) 2006 Open Source Matters, Inc. <https://www.joomla.org>
+ * @license     GNU General Public License version 2 or later; see LICENSE.txt
+ */
+
+defined('_JEXEC') or die;
+
+use Joomla\CMS\Language\Text;
+
+$this->document->getWebAssetManager()
+    ->registerAndUseScript('com_wrapper.iframe', 'com_wrapper/iframe-height.min.js', [], ['defer' => true]);
+
+?>
+<div class="com-wrapper contentpane">
+    <?php if ($this->params->get('show_page_heading')) : ?>
+        <div class="page-header">
+            <h1>
+                <?php if ($this->escape($this->params->get('page_heading'))) : ?>
+                    <?php echo $this->escape($this->params->get('page_heading')); ?>
+                <?php else : ?>
+                    <?php echo $this->escape($this->params->get('page_title')); ?>
+                <?php endif; ?>
+            </h1>
+        </div>
+    <?php endif; ?>
+    <iframe <?php echo $this->wrapper->load; ?>
+        id="blockrandom"
+        name="iframe"
+        src="<?php echo $this->escape($this->wrapper->url); ?>"
+        width="<?php echo $this->escape($this->params->get('width')); ?>"
+        height="<?php echo $this->escape($this->params->get('height')); ?>"
+        loading="<?php echo $this->params->get('lazyloading', 'lazy'); ?>"
+        <?php if ($this->escape($this->params->get('page_heading'))) : ?>
+            title="<?php echo $this->escape($this->params->get('page_heading')); ?>"
+        <?php else : ?>
+            title="<?php echo $this->escape($this->params->get('page_title')); ?>"
+        <?php endif; ?>
+        class="com-wrapper__iframe wrapper <?php echo $this->pageclass_sfx; ?>">
+        <?php echo Text::_('COM_WRAPPER_NO_IFRAMES'); ?>
+    </iframe>
+</div>

components/com_wrapper/tmpl/wrapper/default.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<metadata>
+	<layout title="COM_WRAPPER_WRAPPER_VIEW_DEFAULT_TITLE" option="COM_WRAPPER_WRAPPER_VIEW_DEFAULT_OPTION">
+		<help
+			key="Menu_Item:_Iframe_Wrapper"
+		/>
+		<message>
+			<![CDATA[COM_WRAPPER_WRAPPER_VIEW_DEFAULT_DESC]]>
+		</message>
+	</layout>
+
+	<!-- Add fields to the parameters object for the layout. -->
+	<fields name="params">
+		<fieldset name="request" label="COM_MENUS_BASIC_FIELDSET_LABEL">
+
+			<field
+				name="url"
+				type="url"
+				label="COM_WRAPPER_FIELD_URL_LABEL"
+				required="true"
+			/>
+		</fieldset>
+		<!-- Add fields to the parameters object for the layout. -->
+
+		<!-- Scroll. -->
+		<fieldset name="basic" label="COM_WRAPPER_FIELD_LABEL_SCROLLBARSPARAMS">
+			<field
+				name="width"
+				type="text"
+				label="JGLOBAL_WIDTH"
+				default="100%"
+			/>
+
+			<field
+				name="height"
+				type="number"
+				label="COM_WRAPPER_FIELD_HEIGHT_LABEL"
+				default="500"
+			/>
+		</fieldset>
+
+		<!-- Advanced options. -->
+		<fieldset name="advanced">
+			<field
+				name="height_auto"
+				type="radio"
+				label="COM_WRAPPER_FIELD_HEIGHTAUTO_LABEL"
+				default="0"
+				layout="joomla.form.field.radio.switcher"
+				>
+				<option value="0">JNO</option>
+				<option value="1">JYES</option>
+			</field>
+
+			<field
+				name="add_scheme"
+				type="radio"
+				label="COM_WRAPPER_FIELD_ADD_LABEL"
+				description="COM_WRAPPER_FIELD_ADD_DESC"
+				layout="joomla.form.field.radio.switcher"
+				default="1"
+				>
+				<option value="0">JNO</option>
+				<option value="1">JYES</option>
+			</field>
+
+			<field
+				name="lazyloading"
+				type="radio"
+				label="COM_WRAPPER_FIELD_LAZYLOADING_LABEL"
+				default="lazy"
+				layout="joomla.form.field.radio.switcher"
+				validate="options"
+				>
+				<option value="eager">JNO</option>
+				<option value="lazy">JYES</option>
+			</field>
+		</fieldset>
+	</fields>
+</metadata>