Initial commit.

AsyncDisplayKit/Details/NSMutableAttributedString+TextKitAdditions.m

@@ -0,0 +1,48 @@
+/* Copyright (c) 2014-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#import "NSMutableAttributedString+TextKitAdditions.h"
+
+@implementation NSMutableAttributedString (TextKitAdditions)
+
+#pragma mark - Convenience Methods
+
+- (void)attributeTextInRange:(NSRange)range withTextKitMinimumLineHeight:(CGFloat)minimumLineHeight
+{
+  if (range.length) {
+
+    NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc] init];
+    [style setMinimumLineHeight:minimumLineHeight];
+    [self attributeTextInRange:range withTextKitParagraphStyle:style];
+  }
+}
+
+- (void)attributeTextInRange:(NSRange)range withTextKitMinimumLineHeight:(CGFloat)minimumLineHeight maximumLineHeight:(CGFloat)maximumLineHeight
+{
+  if (range.length) {
+
+    NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc] init];
+    [style setMinimumLineHeight:minimumLineHeight];
+    [style setMaximumLineHeight:maximumLineHeight];
+    [self attributeTextInRange:range withTextKitParagraphStyle:style];
+  }
+}
+
+- (void)attributeTextInRange:(NSRange)range withTextKitLineHeight:(CGFloat)lineHeight
+{
+  [self attributeTextInRange:range withTextKitMinimumLineHeight:lineHeight maximumLineHeight:lineHeight];
+}
+
+- (void)attributeTextInRange:(NSRange)range withTextKitParagraphStyle:(NSParagraphStyle *)paragraphStyle
+{
+  if (range.length) {
+    [self addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:range];
+  }
+}
+
+@end