Added a way to manually trigger the loading progress

Class/CBStoreHouseRefreshControl.h

@@ -8,8 +8,16 @@
 
 #import <UIKit/UIKit.h>
 
+typedef enum {
+    CBStoreHouseRefreshControlStateIdle = 0,
+    CBStoreHouseRefreshControlStateRefreshing = 1,
+    CBStoreHouseRefreshControlStateDisappearing = 2
+} CBStoreHouseRefreshControlState;
+
 @interface CBStoreHouseRefreshControl : UIView
 
+@property (nonatomic, readonly) CBStoreHouseRefreshControlState state;
+
 + (CBStoreHouseRefreshControl*)attachToScrollView:(UIScrollView *)scrollView
                                            target:(id)target
                                     refreshAction:(SEL)refreshAction
@@ -32,5 +40,8 @@
 - (void)scrollViewDidEndDragging;
 
 - (void)finishingLoading;
+- (void)finishingLoading:(BOOL)animated;
+
+- (void)triggerLoading;
 
 @end

Class/CBStoreHouseRefreshControl.m

@@ -15,12 +15,6 @@
 static const CGFloat kdisappearDuration = 1.2;
 static const CGFloat krelativeHeightFactor = 2.f/5.f;
 
-typedef enum {
-    CBStoreHouseRefreshControlStateIdle = 0,
-    CBStoreHouseRefreshControlStateRefreshing = 1,
-    CBStoreHouseRefreshControlStateDisappearing = 2
-} CBStoreHouseRefreshControlState;
-
 NSString *const startPointKey = @"startPoints";
 NSString *const endPointKey = @"endPoints";
 NSString *const xKey = @"x";
@@ -150,33 +144,37 @@ - (void)scrollViewDidEndDragging
 
         if (self.state == CBStoreHouseRefreshControlStateRefreshing) {
 
-            UIEdgeInsets newInsets = self.scrollView.contentInset;
-            newInsets.top = self.originalTopContentInset + self.dropHeight;
-            CGPoint contentOffset = self.scrollView.contentOffset;
-
-            [UIView animateWithDuration:0 animations:^(void) {
-                self.scrollView.contentInset = newInsets;
-                self.scrollView.contentOffset = contentOffset;
-            }];
-
-            #pragma clang diagnostic push
-            #pragma clang diagnostic ignored "-Warc-performSelector-leaks"
-
-            if ([self.target respondsToSelector:self.action])
-                [self.target performSelector:self.action withObject:self];
-
-            #pragma clang diagnostic pop
-
-            [self startLoadingAnimation];
+            [self startLoading];
         }
     }
 }
-
 #pragma mark Private Methods
 
+- (void)startLoading {
+    UIEdgeInsets newInsets = self.scrollView.contentInset;
+    newInsets.top = self.originalTopContentInset + self.dropHeight;
+    CGPoint contentOffset = self.scrollView.contentOffset;
+
+    [UIView animateWithDuration:0 animations:^(void) {
+        self.scrollView.contentInset = newInsets;
+        self.scrollView.contentOffset = contentOffset;
+    }];
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
+
+    if ([self.target respondsToSelector:self.action])
+        [self.target performSelector:self.action withObject:self];
+
+#pragma clang diagnostic pop
+
+    [self startLoadingAnimation];
+}
+
+
 - (CGFloat)animationProgress
 {
-    return MIN(1.f, MAX(0, fabsf(self.realContentOffsetY)/self.dropHeight));
+    return MIN(1.f, MAX(0, fabs(self.realContentOffsetY)/self.dropHeight));
 }
 
 - (CGFloat)realContentOffsetY
@@ -263,19 +261,37 @@ - (void)updateDisappearAnimation
 
 #pragma mark Public Methods
 
-- (void)finishingLoading
+- (void)triggerLoading {
+    //if (self.state == CBStoreHouseRefreshControlStateIdle || self.state == CBStoreHouseRefreshControlStateDisappearing) {
+        self.state = CBStoreHouseRefreshControlStateRefreshing;
+        self.scrollView.contentOffset = CGPointMake(self.scrollView.contentOffset.x, -self.dropHeight);
+        [self updateBarItemsWithProgress:1];
+        [self startLoading];
+    //}
+}
+
+- (void)finishingLoading:(BOOL)animated
 {
     self.state = CBStoreHouseRefreshControlStateDisappearing;
+
     UIEdgeInsets newInsets = self.scrollView.contentInset;
     newInsets.top = self.originalTopContentInset;
-    [UIView animateWithDuration:kdisappearDuration animations:^(void) {
-        self.scrollView.contentInset = newInsets;
-    } completion:^(BOOL finished) {
+
+    if (animated) {
+        [UIView animateWithDuration:kdisappearDuration animations:^(void) {
+            self.scrollView.contentInset = newInsets;
+        } completion:^(BOOL finished) {
+            self.state = CBStoreHouseRefreshControlStateIdle;
+            [self.displayLink invalidate];
+            self.disappearProgress = 1;
+        }];
+    } else {
         self.state = CBStoreHouseRefreshControlStateIdle;
         [self.displayLink invalidate];
         self.disappearProgress = 1;
-    }];
-
+        self.scrollView.contentInset = newInsets;
+    }
+
     for (BarItem *barItem in self.barItems) {
         [barItem.layer removeAllAnimations];
         barItem.alpha = kbarDarkAlpha;
@@ -286,4 +302,9 @@ - (void)finishingLoading
     self.disappearProgress = 1;
 }
 
+- (void)finishingLoading
+{
+    [self finishingLoading:YES];
+}
+
 @end