Reworked pull-to-refresh to use gestures

Gesture recognizers clean up some of the view hierarchy related to pull-to-refresh.  This replaces EGOPullToRefresh

Code/UI/RKRefreshTriggerView.m

@@ -0,0 +1,176 @@
+//  RKRefreshTriggerView.h
+//  RestKit
+//
+//  Based on PHRefreshTriggerView by Pier-Olivier Thibault
+//  Adapted by Gregory S. Combs on 1/13/2012
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//  http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+//
+// TODO: Figure out how to automatically install RestKitResources.bundle and use that bundle path for arrow images
+
+#import "RKRefreshTriggerView.h"
+
+#define DEFAULT_REFRESH_TITLE_FONT      [UIFont boldSystemFontOfSize:13.0f]
+#define DEFAULT_REFRESH_TITLE_COLOR     [UIColor darkGrayColor]
+#define DEFAULT_REFRESH_UPDATED_FONT    [UIFont systemFontOfSize:12.0f]
+#define DEFAULT_REFRESH_UPDATED_COLOR   [UIColor lightGrayColor]
+#define DEFAULT_REFRESH_ARROW_IMAGE     [UIImage imageNamed:@"blueArrow"]
+#define DEFAULT_REFRESH_ACTIVITY_STYLE  UIActivityIndicatorViewStyleWhite
+
+@interface RKRefreshTriggerView ()
+@end
+
+@implementation RKRefreshTriggerView
+@synthesize titleLabel      = _titleLabel;
+@synthesize activityView    = _activityView;
+@synthesize arrowView       = _arrowView;
+@synthesize lastUpdatedLabel = _lastUpdatedLabel;
+
+- (id)initWithFrame:(CGRect)frame
+{
+    self = [super initWithFrame:frame];
+    if (self) {
+        self.autoresizingMask = UIViewAutoresizingFlexibleWidth;
+        self.backgroundColor = [UIColor clearColor];
+
+        _titleLabel = [[UILabel alloc] initWithFrame:CGRectZero];
+        _titleLabel.autoresizingMask = UIViewAutoresizingFlexibleWidth;
+        _titleLabel.textAlignment = UITextAlignmentCenter;
+        _titleLabel.backgroundColor = [UIColor clearColor];
+        _titleLabel.font = DEFAULT_REFRESH_TITLE_FONT;
+        _titleLabel.textColor = DEFAULT_REFRESH_TITLE_COLOR;
+        [self addSubview:_titleLabel];
+
+        _lastUpdatedLabel = [[UILabel alloc] initWithFrame:CGRectZero];
+        _lastUpdatedLabel.autoresizingMask = UIViewAutoresizingFlexibleWidth;
+        _lastUpdatedLabel.backgroundColor = [UIColor clearColor];
+        _lastUpdatedLabel.textAlignment = UITextAlignmentCenter;
+        _lastUpdatedLabel.font = DEFAULT_REFRESH_UPDATED_FONT;
+        _lastUpdatedLabel.textColor = DEFAULT_REFRESH_UPDATED_COLOR;
+        [self addSubview:_lastUpdatedLabel];
+
+        _arrowView = [[UIImageView alloc] initWithImage:DEFAULT_REFRESH_ARROW_IMAGE];
+        _arrowView.autoresizingMask = UIViewAutoresizingFlexibleRightMargin;
+        [self addSubview:_arrowView];
+
+        _activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:DEFAULT_REFRESH_ACTIVITY_STYLE];
+        _activityView.autoresizingMask = UIViewAutoresizingFlexibleRightMargin;
+    }
+    return self;
+}
+
+
+- (void)dealloc {
+    self.titleLabel = nil;
+    self.arrowView  = nil;
+    self.activityView = nil;
+    self.lastUpdatedLabel = nil;
+    [super dealloc];
+}
+
+
+- (void)layoutSubviews {
+    CGPoint imageCenter = CGPointMake(30, CGRectGetMidY(self.bounds));
+    self.arrowView.center = imageCenter;
+    self.arrowView.frame = CGRectIntegral(self.arrowView.frame);
+    self.activityView.center = imageCenter;
+    self.titleLabel.frame = CGRectIntegral(CGRectMake(0.0f, ( CGRectGetHeight(self.bounds) * .25f ), CGRectGetWidth(self.bounds), 20.0f));
+    self.lastUpdatedLabel.frame = CGRectOffset(self.titleLabel.frame, 0.f, 18.f );
+}
+
+#ifdef UI_APPEARANCE_SELECTOR
+
+#pragma mark - Proxy Accessors for UIAppearance
+
+- (UIImage *)arrowImage {
+    if (!self.arrowView)
+        return DEFAULT_REFRESH_ARROW_IMAGE;
+    return _arrowView.image;
+}
+
+- (void)setArrowImage:(UIImage *)image {
+    if (!self.arrowView)
+        return;
+    self.arrowView.image = image;
+}
+
+- (UIActivityIndicatorViewStyle)activityIndicatorStyle {
+    if (!self.activityView)
+        return DEFAULT_REFRESH_ACTIVITY_STYLE;
+    return self.activityView.activityIndicatorViewStyle;
+}
+
+- (void)setActivityIndicatorStyle:(UIActivityIndicatorViewStyle)style {
+    if (!self.activityView)
+        return;
+    self.activityView.activityIndicatorViewStyle = style;
+}
+
+- (UIFont *)titleFont {
+    if (!self.titleLabel)
+        return DEFAULT_REFRESH_TITLE_FONT;
+    return self.titleLabel.font;
+}
+
+- (void)setTitleFont:(UIFont *)font {
+    if (!self.titleLabel)
+        return;
+    self.titleLabel.font = font;
+}
+
+- (UIColor *)titleColor {
+    if (!self.titleLabel)
+        return DEFAULT_REFRESH_TITLE_COLOR;
+    return self.titleLabel.textColor;
+}
+
+- (void)setTitleColor:(UIColor *)color {
+    if (!self.titleLabel)
+        return;
+    self.titleLabel.textColor = color;
+}
+
+- (UIFont *)lastUpdatedFont {
+    if (!self.lastUpdatedLabel)
+        return DEFAULT_REFRESH_UPDATED_FONT;
+    return self.lastUpdatedLabel.font;
+}
+
+- (void)setLastUpdatedFont:(UIFont *)font {
+    if (!self.lastUpdatedLabel)
+        return;
+    self.lastUpdatedLabel.font = font;
+}
+
+- (UIColor *)lastUpdatedColor {
+    if (!self.lastUpdatedLabel)
+        return DEFAULT_REFRESH_UPDATED_COLOR;
+    return self.lastUpdatedLabel.textColor;
+}
+
+- (void)setLastUpdatedColor:(UIColor *)color {
+    if (!self.lastUpdatedLabel)
+        return;
+    self.lastUpdatedLabel.textColor = color;
+}
+
+- (UIColor *)refreshBackgroundColor {
+    return self.backgroundColor;
+}
+
+- (void)setRefreshBackgroundColor:(UIColor *)backgroundColor {
+    [self setBackgroundColor:backgroundColor];
+}
+#endif
+
+@end