UITextView Placeholder

SunriseOYR · Jan 25, 2018 · 87c4bd0 · 87c4bd0
1 parent ac515c8
commit 87c4bd0
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Showing 7 changed files with 89 additions and 6 deletions.
diff --git a/IBProperty.podspec b/IBProperty.podspec
@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name         = "IBProperty"
-  s.version      = "1.1.0"
+  s.version      = "1.1.1"
   s.ios.deployment_target = '7.0'
   s.summary      = "A iOS Kit which would adapt screen by XIB and Storyboard  better， and  use better  for XIB  and Storyboard。"
   #s.description  = <<-DESC

diff --git a/IBProperty/NSLayoutConstraint+ORIBProperty.h b/IBProperty/NSLayoutConstraint+ORIBProperty.h
@@ -8,6 +8,8 @@
 
 #import <UIKit/UIKit.h>
 
+IB_DESIGNABLE
+
 @interface NSLayoutConstraint (ORIBProperty)
 
 /*
@@ -17,7 +19,7 @@
 @property (nonatomic, assign) IBInspectable BOOL ib_adaptConstant;
 
 /*
- * 适配导航栏高度，若为YES constant将不会适配比例，而是在iPhone X 上加上24pt, 常用于 为自定义导航栏的高度约束以及子视图布局添加约束
+ * 适配导航栏高度，若为YES constant将不会适配比例，而是在iPhone X 上加上24pt, 常用于 为自定义导航栏的子视图添加约束
  * constant would not adapt but add 24px in iPhone X
  */
 @property (nonatomic, assign) IBInspectable BOOL ib_adaptXTopConstant;

diff --git a/IBProperty/UICollectionViewFlowLayout+ORIBProperty.h b/IBProperty/UICollectionViewFlowLayout+ORIBProperty.h
@@ -8,6 +8,8 @@
 
 #import <UIKit/UIKit.h>
 
+IB_DESIGNABLE
+
 @interface UICollectionViewFlowLayout (ORIBProperty) 
 
 /* itemSize、minimumLineSpacing、minimumInteritemSpacing、headerReferenceSize、footerReferenceSize、sectionInset

diff --git a/IBProperty/UIControl+ORIBProperty.h b/IBProperty/UIControl+ORIBProperty.h
@@ -8,6 +8,8 @@
 
 #import <UIKit/UIKit.h>
 
+IB_DESIGNABLE
+
 @interface UIControl (ORIBProperty)
 
 /*

diff --git a/IBProperty/UITextView+ORIBProperty.h b/IBProperty/UITextView+ORIBProperty.h
@@ -8,6 +8,8 @@
 
 #import <UIKit/UIKit.h>
 
+IB_DESIGNABLE
+
 @interface UITextView (ORIBProperty)
 
 /*
@@ -16,5 +18,11 @@
  */
 @property (nonatomic, assign) IBInspectable BOOL ib_adaptFont;
 
+/*
+ * 类似于UITextField的placeholder
+ * like UITextField's placeholder
+ */
+@property (nonatomic, copy) IBInspectable NSString * ib_placeholder;
+
 
 @end
diff --git a/IBProperty/UITextView+ORIBProperty.m b/IBProperty/UITextView+ORIBProperty.m
@@ -9,8 +9,14 @@
 #import "UITextView+ORIBProperty.h"
 #import "ORIBProperty.h"
 
+static NSInteger const placeholderTag = 2017;
+
 @implementation UITextView (ORIBProperty)
 
+- (void)dealloc {
+    [[NSNotificationCenter defaultCenter] removeObserver:self];
+}
+
 - (void)setIb_adaptFont:(BOOL)ib_adaptFont {
 
     if (ib_adaptFont == YES) {
@@ -22,6 +28,69 @@ - (BOOL)ib_adaptFont {
     return NO;
 }
 
+- (void)setIb_placeholder:(NSString *)ib_placeholder {
+    if (ib_placeholder.length > 0) {
+        UILabel *label = [self viewWithTag:placeholderTag];
+        if (!label) {
+            label = [UILabel new];
+            label.font = self.font;
+            label.textColor = [UIColor colorWithRed:213/255.f green:213/255.f blue:213/255.f alpha:1];
+            label.tag = placeholderTag;
+            label.frame = CGRectMake(self.textContainerInset.left + 5, self.textContainerInset.top, self.frame.size.width - (self.textContainerInset.left + self.textContainerInset.right), self.frame.size.height - (self.textContainerInset.top + self.textContainerInset.bottom));
+            label.numberOfLines = 0;
+            [self addSubview:label];
+        }
+        label.text = ib_placeholder;
+        [label sizeToFit];
+        label.hidden = NO;
+
+        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(textBeginEditing) name:UITextViewTextDidBeginEditingNotification object:nil];
+        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(textEndEditing) name:UITextViewTextDidEndEditingNotification object:nil];
+        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(textDidChange) name:UITextViewTextDidChangeNotification object:nil];
+
+        __weak typeof (self) weakSelf = self;
+
+        [self aspect_hookSelector:@selector(setText:) withOptions:AspectPositionAfter usingBlock:^{
+            __strong typeof(weakSelf) strongSelf = weakSelf;
+            strongSelf.ib_plceholderLabel.hidden = strongSelf.text.length > 0 || [strongSelf isFirstResponder];
+        } error:nil];
+
+        [self aspect_hookSelector:@selector(setTextContainerInset:) withOptions:AspectPositionAfter usingBlock:^{
+
+            __strong typeof(weakSelf) strongSelf = weakSelf;
+
+            CGRect frame = strongSelf.ib_plceholderLabel.frame;
+            frame.origin.x = strongSelf.textContainerInset.left + 5;
+            frame.origin.y = strongSelf.textContainerInset.top;
+            strongSelf.ib_plceholderLabel.frame = frame;
+        } error:nil];
+
+        [self aspect_hookSelector:@selector(setFont:) withOptions:AspectPositionAfter usingBlock:^{
+            __strong typeof(weakSelf) strongSelf = weakSelf;
+            strongSelf.ib_plceholderLabel.font = strongSelf.font;
+        } error:nil];
+    }
+}
+
+- (NSString *)ib_placeholder {
+    return self.ib_plceholderLabel.text;
+}
+
+- (void)textBeginEditing {
+    self.ib_plceholderLabel.hidden = YES;
+}
+
+- (void)textEndEditing {
+    self.ib_plceholderLabel.hidden = self.text.length > 0;
+}
+
+- (void)textDidChange {
+    self.ib_plceholderLabel.hidden = self.text.length > 0 || [self isFirstResponder];
+}
+
+- (UILabel *)ib_plceholderLabel {
+    return [self viewWithTag:placeholderTag];
+}
 
 @end
 
diff --git a/IBProperty/UIView+ORIBProperty.m b/IBProperty/UIView+ORIBProperty.m
@@ -23,8 +23,8 @@ - (UIImage*)imageAddib_cornerRadius:(CGFloat)radius andSize:(CGSize)size;
 @implementation UIImage(ORIBProperty)
 
 - (UIImage*)imageAddib_cornerRadius:(CGFloat)radius andSize:(CGSize)size{
-    CGRect rect = CGRectMake(0, 0, size.width, size.height);
 
+    CGRect rect = CGRectMake(0, 0, size.width, size.height);
     UIGraphicsBeginImageContextWithOptions(size, NO, [UIScreen mainScreen].scale);
     CGContextRef ctx = UIGraphicsGetCurrentContext();
     UIBezierPath * path = [UIBezierPath bezierPathWithRoundedRect:rect byRoundingCorners:UIRectCornerAllCorners cornerRadii:CGSizeMake(radius, radius)];
@@ -59,7 +59,7 @@ - (void)setIb_borderColor:(UIColor *)ib_borderColor {
 }
 
 - (UIColor *)ib_borderColor {
-    return nil;
+    return [UIColor colorWithCGColor:self.layer.borderColor];
 }
 
 #pragma mark -- ib_cornerRadius
@@ -113,8 +113,6 @@ - (void)setIb_cornerCircle:(BOOL)ib_cornerCircle {
 
         self.layer.cornerRadius = self.bounds.size.height / 2.0f;
 
-        __weak typeof (self) weakSelf = self;
-
         if ([self isKindOfClass:[UIImageView class]]) {
             [self method_exchangeWithSelector:@selector(setImage:) toSelector:@selector(ib_setImage:)];
         }
@@ -130,6 +128,8 @@ - (void)setIb_cornerCircle:(BOOL)ib_cornerCircle {
             }
         }
 
+        __weak typeof (self) weakSelf = self;
+
         [self aspect_hookSelector:@selector(setBounds:) withOptions:AspectPositionAfter usingBlock:^(){
 
             __strong typeof(weakSelf) strongSelf = weakSelf;