Create custom admin article menus (#20890)

* Create custom admin article menus

See #20233 for detailed explanation of the use case

### Test Instructions

Create and enable an admin menu with the "Joomla preset"

Create a new admin menu item of type article list and you can see you now have a full set of filters that you can apply.

For example you can now create menu items in the admin to each category.

If approved I will create the same option for other components

This does not resolve everything on #20233 as it still needs field categories to be implemented for that

* Update default.xml

* Update en-GB.com_menus.ini

* add filters

* add viewing access level

* Update default.xml

* Update default.xml

administrator/components/com_content/views/articles/tmpl/default.xml

@@ -5,4 +5,79 @@
 			<![CDATA[COM_CONTENT_ARTICLES_VIEW_DEFAULT_DESC]]>
 		</message>
 	</layout>
+		<!-- Add fields to the request variables for the layout. -->
+	<fields name="request">
+		<fieldset name="request"
+			addfieldpath="/administrator/components/com_categories/models/fields"
+		>
+			<field
+				name="filter_category_id"
+				type="modal_category"
+				label="COM_MENUS_ADMIN_CATEGORY_LABEL"
+				description="COM_MENUS_ADMIN_CATEGORY_DESC"
+				extension="com_content"
+				select="true"
+				new="true"
+				edit="true"
+				clear="true"
+				filter="integer"
+			/>
+
+			<field
+				name="filter_level"
+				type="integer"
+				label="COM_MENUS_ADMIN_LEVEL_LABEL"
+				description="COM_MENUS_ADMIN_LEVEL_DESC"
+				first="1"
+				last="10"
+				step="1"
+				languages="*"
+				filter="integer"
+				>
+				<option value="">JOPTION_SELECT_MAX_LEVELS</option>
+			</field>
+
+			<field
+				name="filter_author_id"
+				type="author"
+				label="COM_MENUS_ADMIN_AUTHOR_LABEL"
+				description="COM_MENUS_ADMIN_AUTHOR_DESC"
+				multiple="true"
+				class="multipleAuthors"
+				filter="int_array"
+				>
+				<option value="0">JNONE</option>
+			</field>
+
+			<field
+				name="filter_tag"
+				type="tag"
+				label="COM_MENUS_ADMIN_TAGS_LABEL"
+				description="COM_MENUS_ADMIN_TAGS_DESC"
+				multiple="true"
+				filter="int_array"
+			/>
+
+			<field
+				name="filter_access"
+				type="accesslevel"
+				label="COM_MENUS_ADMIN_ACCESS_LABEL"
+				description="COM_MENUS_ADMIN_ACCESS_DESC"
+				multiple="true"
+				filter="int_array"
+			/>
+
+			<field
+				name="filter_language"
+				type="contentlanguage"
+				label="COM_MENUS_ADMIN_LANGUAGE_LABEL"
+				description="COM_MENUS_ADMIN_LANGUAGE_DESC"
+				>
+				<option value="">JOPTION_SELECT_LANGUAGE</option>
+				<option value="*">JALL</option>
+			</field>
+
+		</fieldset>
+	</fields>
+
 </metadata>

administrator/language/en-GB/en-GB.com_menus.ini

@@ -9,6 +9,20 @@ COM_MENUS_ACTION_DESELECT="Deselect"
 COM_MENUS_ACTION_EXPAND="Expand"
 COM_MENUS_ACTION_SELECT="Select"
 COM_MENUS_ADD_MENU_MODULE="Add a module for this menu"
+COM_MENUS_ADMIN_ACCESS_DESC="Filter by viewing access level."
+COM_MENUS_ADMIN_ACCESS_LABEL="Access"
+COM_MENUS_ADMIN_AUTHOR_DESC="Filter by author."
+COM_MENUS_ADMIN_AUTHOR_LABEL="Author"
+COM_MENUS_ADMIN_CATEGORY_DESC="Filter by category."
+COM_MENUS_ADMIN_CATEGORY_LABEL="Category"
+COM_MENUS_ADMIN_FILTER_DESC="Apply filters to the menu item."
+COM_MENUS_ADMIN_FILTER_LABEL="Filter"
+COM_MENUS_ADMIN_LANGUAGE_DESC="Filter by language."
+COM_MENUS_ADMIN_LANGUAGE_LABEL="Language"
+COM_MENUS_ADMIN_LEVEL_DESC="The number of subcategory levels to display."
+COM_MENUS_ADMIN_LEVEL_LABEL="Subcategory Levels"
+COM_MENUS_ADMIN_TAGS_DESC="Filter by tags."
+COM_MENUS_ADMIN_TAGS_LABEL="Tags"
 COM_MENUS_ADVANCED_FIELDSET_LABEL="Advanced"
 COM_MENUS_BASIC_FIELDSET_LABEL="Options"
 COM_MENUS_BATCH_MENU_ITEM_CANNOT_CREATE="You are not allowed to create new menu items."