Ability to set paragraph alignment

ChainedAttributedString/NSMutableAttributedString+ChainedAttributes.swift

@@ -220,6 +220,31 @@ public extension NSMutableAttributedString {
         return self
     }
 
+    /**
+     This function adds paragraph style with text alignment attributed string.
+
+     - warning: If text passed in "text" parameter is not found, attribute will be applied to whole attributed string. Only first occurence of "text" is styled.
+
+     - parameter alignment - NSTextAlignment which should be applied as alignment to the paragraph style
+     - parameter text - String for which the paragraph style will be applied to (optional, default = whole attributed string)
+
+     - returns: Modified NSMutableAttributedString
+     */
+    func alignment(_ alignment:NSTextAlignment, forText text:String? = nil) -> NSMutableAttributedString {
+
+        var attributeRange:NSRange? = nil
+        if let textForAttribute = text {
+            attributeRange = self.getRangeOfStringInSelf(textForAttribute)
+        }
+
+        let paragraphStyle = NSMutableParagraphStyle()
+        paragraphStyle.alignment = .center
+
+        self.applyAttribute(NSParagraphStyleAttributeName, withValue: paragraphStyle as AnyObject, forRange: attributeRange)
+
+        return self
+    }
+
     // MARK: Clear attributes
 
     /**

Example/Example/ViewController.swift

@@ -27,7 +27,7 @@ class ViewController: UIViewController {
             .strikeThrough(2, forText: "shows")
             .strikeThroughColor(UIColor.blue)
             .underline(2, forText: "attributes")
-
+            .alignment(.center)
     }
 
 }