Style loader from mdawaffe. see #7011

git-svn-id: http://svn.automattic.com/wordpress/trunk@7970 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class.wp-styles.php

@@ -0,0 +1,49 @@
+<?php
+
+class WP_Styles extends WP_Dependencies {
+	var $base_url;
+	var $default_version;
+
+	function __construct() {
+		do_action_ref_array( 'wp_default_styles', array(&$this) );
+	}
+
+	function do_item( $handle ) {
+		if ( !parent::do_item($handle) )
+			return false;
+
+		$ver = $this->registered[$handle]->ver ? $this->registered[$handle]->ver : $this->default_version;
+		if ( isset($this->args[$handle]) )
+			$ver .= '&amp;' . $this->args[$handle];
+
+		if ( isset($this->registered[$handle]->args) )
+			$media = attribute_escape( $this->registered[$handle]->args );
+		else
+			$media = 'all';
+
+		$src = $this->registered[$handle]->src;
+		if ( !preg_match('|^https?://|', $src) ) {
+			$src = $this->base_url . $src;
+		}
+
+		$src = add_query_arg('ver', $ver, $src);
+		$src = clean_url(apply_filters( 'style_loader_src', $src ));
+
+		echo "<link rel='stylesheet' href='$src' type='text/css' media='$media' />\n";
+
+		// Could do something with $this->registered[$handle]->extra here to print out extra CSS rules
+//		echo "<style type='text/css'>\n";
+//		echo "/* <![CDATA[ */\n";
+//		echo "/* ]]> */\n";
+//		echo "</style>\n";
+
+		return true;
+	}
+
+	function all_deps( $handles, $recursion = false ) {
+		$r = parent::all_deps( $handles, $recursion );
+		if ( !$recursion )
+			$this->to_do = apply_filters( 'print_styles_array', $this->to_do );
+		return $r;
+	}
+}