Add convenient UIView helper

jinthagerman · Jun 16, 2012 · c759a0d · c759a0d
1 parent d5b02ce
commit c759a0d
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diff --git a/KNSemiModalViewControllerDemo/KNThirdViewController.xib b/KNSemiModalViewControllerDemo/KNThirdViewController.xib
@@ -0,0 +1,74 @@
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+		<object class="NSMutableDictionary" key="IBDocument.PluginVersions">
+			<string key="NS.key.0">com.apple.InterfaceBuilder.IBCocoaTouchPlugin</string>
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+		<array key="IBDocument.PluginDependencies">
+			<string>com.apple.InterfaceBuilder.IBCocoaTouchPlugin</string>
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+				<string key="IBProxiedObjectIdentifier">IBFirstResponder</string>
+				<string key="targetRuntimeIdentifier">IBCocoaTouchFramework</string>
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+				<string key="-1.IBPluginDependency">com.apple.InterfaceBuilder.IBCocoaTouchPlugin</string>
+				<string key="-2.CustomClassName">UIResponder</string>
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diff --git a/Source/UIViewController+KNSemiModal.h b/Source/UIViewController+KNSemiModal.h
@@ -15,3 +15,10 @@
 -(void)dismissSemiModalView;
 
 @end
+
+// Convenient category method to find actual ViewController that contains a view
+
+@interface UIView (FindUIViewController)
+- (UIViewController *) containingViewController;
+- (id) traverseResponderChainForUIViewController;
+@end
diff --git a/Source/UIViewController+KNSemiModal.m b/Source/UIViewController+KNSemiModal.m
@@ -137,3 +137,26 @@ -(void)dismissSemiModalView {
 }
 
 @end
+
+#pragma mark - 
+
+// Convenient category method to find actual ViewController that contains a view
+// Adapted from: http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview-on-iphone
+
+@implementation UIView (FindUIViewController)
+- (UIViewController *) containingViewController {
+  UIView * target = self.superview ? self.superview : self;
+  return (UIViewController *)[target traverseResponderChainForUIViewController];
+}
+
+- (id) traverseResponderChainForUIViewController {
+  id nextResponder = [self nextResponder];
+  if ([nextResponder isKindOfClass:[UIViewController class]]) {
+    return nextResponder;
+  } else if ([nextResponder isKindOfClass:[UIView class]]) {
+    return [nextResponder traverseResponderChainForUIViewController];
+  } else {
+    return nil;
+  }
+}
+@end