Making Joomla 3.4.x administrator menu 2 column

Joomla-two-column-admin-menu

<?php
/**
* @author  Sanjeev Shrestha <sanjeev@joomlaguru.com.np>
* 14/03/2015
* Add a class to Menu Node For the menu in the administrator/mod_menu/tmpl/default_enabled.php
* Here I am making the admin components menu 2 column
*/

/**
* Add a class to 'components' menu node creator in file administrator/mod_menu/tmpl/default_enabled.php
* Replace $menu->addChild(new JMenuNode(JText::_('MOD_MENU_COMPONENTS'), '#'), true); with $menu->addChild(new JMenuNode(JText::_('MOD_MENU_COMPONENTS'), '#','components'), true);
* 
*/
// File administrator/mod_menu/tmpl/default_enabled.php
/*
 * Components Submenu
 */

// Get the authorised components and sub-menus.
$components = ModMenuHelper::getComponents(true);

// Check if there are any components, otherwise, don't render the menu
if ($components)
{
	$menu->addChild(new JMenuNode(JText::_('MOD_MENU_COMPONENTS'), '#','components'), true);

	foreach ($components as &$component)
	{
		if (!empty($component->submenu))
		{
			// This component has a db driven submenu.
			$menu->addChild(new JMenuNode($component->text, $component->link, $component->img), true);

			foreach ($component->submenu as $sub)
			{
				$menu->addChild(new JMenuNode($sub->text, $sub->link, $sub->img));
			}

			$menu->getParent();
		}
		else
		{
			$menu->addChild(new JMenuNode($component->text, $component->link, $component->img));
		}
	}

	$menu->getParent();
}

//File administrator/mod_menu/menu.php
/**
 * Modify the JAdminCSSMenu RenderMenu Method for following modification
 * Change $depth=1; to $depth=0;
 * Change $depth++ to $depth+1
 */

	public function renderMenu($id = 'menu', $class = '')
	{
		$depth = 0;

		if (!empty($id))
		{
			$id = 'id="' . $id . '"';
		}

		if (!empty($class))
		{
			$class = 'class="' . $class . '"';
		}

		// Recurse through children if they exist
		while ($this->_current->hasChildren())
		{
			echo "<ul " . $id . " " . $class . ">\n";
			
			foreach ($this->_current->getChildren() as $child)
			{
				$this->_current = & $child;
				$this->renderLevel($depth+1);
			}

			echo "</ul>\n";
		}

		if ($this->_css)
		{
			// Add style to document head
			JFactory::getDocument()->addStyleDeclaration($this->_css);
		}
	}


/**
 * Modify the JAdminCssMenu class render level method to include the current class in the node
 * Change echo '<ul' . $id . ' class="dropdown-menu menu-component">' . "\n"; 
 * to 
 * echo '<ul' . $id . ' class="dropdown-menu menu-component '.$this->_current->class.'">' . "\n";
 * Change the $depth++ to $depth+1
 *
 * Change 
 * if ($this->_current->hasChildren() && $this->_current->class)
 * To 
 * if ($depth>1 && $this->_current->hasChildren() && $this->_current->class)
 * 
 * As shown in following gist
 */

	public function renderLevel($depth)
	{
		// Build the CSS class suffix
		$class = '';

		if ($this->_current->hasChildren())
		{
			$class = ' class="dropdown"';
		}

		if ($this->_current->class == 'separator')
		{
			$class = ' class="divider"';
		}

		if ($depth>1 && $this->_current->hasChildren() && $this->_current->class)
		{
			$class = ' class="dropdown-submenu"';
		}

		if ($this->_current->class == 'disabled')
		{
			$class = ' class="disabled"';
		}

		// Print the item
		echo "<li" . $class . ">";

		// Print a link if it exists
		$linkClass = array();
		$dataToggle = '';
		$dropdownCaret = '';

		if ($this->_current->hasChildren())
		{
			$linkClass[] = 'dropdown-toggle';
			$dataToggle = ' data-toggle="dropdown"';

			if (!$this->_current->getParent()->hasParent())
			{
				$dropdownCaret = ' <span class="caret"></span>';
			}
		}

		if ($this->_current->link != null && $this->_current->getParent()->title != 'ROOT')
		{
			$iconClass = $this->getIconClass($this->_current->class);

			if (!empty($iconClass))
			{
				$linkClass[] = $iconClass;
			}
		}

		// Implode out $linkClass for rendering
		$linkClass = ' class="' . implode(' ', $linkClass) . '"';

		if ($this->_current->link != null && $this->_current->target != null)
		{
			echo "<a" . $linkClass . " " . $dataToggle . " href=\"" . $this->_current->link . "\" target=\"" . $this->_current->target . "\" >"
				. $this->_current->title . $dropdownCaret . "</a>";
		}
		elseif ($this->_current->link != null && $this->_current->target == null)
		{
			echo "<a" . $linkClass . " " . $dataToggle . " href=\"" . $this->_current->link . "\">" . $this->_current->title . $dropdownCaret . "</a>";
		}
		elseif ($this->_current->title != null)
		{
			echo "<a" . $linkClass . " " . $dataToggle . ">" . $this->_current->title . $dropdownCaret . "</a>";
		}
		else
		{
			echo "<span></span>";
		}

		// Recurse through children if they exist
		while ($this->_current->hasChildren())
		{
			if ($this->_current->class)
			{
				$id = '';

				if (!empty($this->_current->id))
				{
					$id = ' id="menu-' . strtolower($this->_current->id) . '"';
				}

				echo '<ul' . $id . ' class="dropdown-menu menu-component '.$this->_current->class.'">' . "\n"; //This will add a current class to the <ul> as set in the node creator 
			}
			else
			{
				echo '<ul class="dropdown-menu">' . "\n";
			}

			foreach ($this->_current->getChildren() as $child)
			{
				$this->_current = & $child;
				$this->renderLevel($depth+1);
			}

			echo "</ul>\n";
		}

		echo "</li>\n";
	}

?>
/**Custom CSS for two column components menu
*/
.dropdown-menu.components
{
	min-width:500px;
}

.dropdown-menu.components>li
{
	float:left;
	width:49%;
}