Add growning multiline in chatroom

Classes/Utils/GrowingTextView/HPGrowingTextView.h

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+//
+//  HPTextView.h
+//
+//  Created by Hans Pinckaers on 29-06-10.
+//
+//	MIT License
+//
+//	Copyright (c) 2011 Hans Pinckaers
+//
+//	Permission is hereby granted, free of charge, to any person obtaining a copy
+//	of this software and associated documentation files (the "Software"), to deal
+//	in the Software without restriction, including without limitation the rights
+//	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//	copies of the Software, and to permit persons to whom the Software is
+//	furnished to do so, subject to the following conditions:
+//
+//	The above copyright notice and this permission notice shall be included in
+//	all copies or substantial portions of the Software.
+//
+//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//	THE SOFTWARE.
+
+#import <UIKit/UIKit.h>
+
+@class HPGrowingTextView;
+@class HPTextViewInternal;
+
+@protocol HPGrowingTextViewDelegate
+
+@optional
+- (BOOL)growingTextViewShouldBeginEditing:(HPGrowingTextView *)growingTextView;
+- (BOOL)growingTextViewShouldEndEditing:(HPGrowingTextView *)growingTextView;
+
+- (void)growingTextViewDidBeginEditing:(HPGrowingTextView *)growingTextView;
+- (void)growingTextViewDidEndEditing:(HPGrowingTextView *)growingTextView;
+
+- (BOOL)growingTextView:(HPGrowingTextView *)growingTextView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text;
+- (void)growingTextViewDidChange:(HPGrowingTextView *)growingTextView;
+
+- (void)growingTextView:(HPGrowingTextView *)growingTextView willChangeHeight:(float)height;
+- (void)growingTextView:(HPGrowingTextView *)growingTextView didChangeHeight:(float)height;
+
+- (void)growingTextViewDidChangeSelection:(HPGrowingTextView *)growingTextView;
+- (BOOL)growingTextViewShouldReturn:(HPGrowingTextView *)growingTextView;
+@end
+
+@interface HPGrowingTextView : UIView <UITextViewDelegate> {
+	HPTextViewInternal *internalTextView;	
+	
+	int minHeight;
+	int maxHeight;
+	
+	//class properties
+	int maxNumberOfLines;
+	int minNumberOfLines;
+	
+	BOOL animateHeightChange;
+	
+	//uitextview properties
+	NSObject <HPGrowingTextViewDelegate> *__unsafe_unretained delegate;
+	UITextAlignment textAlignment; 
+	NSRange selectedRange;
+	BOOL editable;
+	UIDataDetectorTypes dataDetectorTypes;
+	UIReturnKeyType returnKeyType;
+    
+    UIEdgeInsets contentInset;
+}
+
+//real class properties
+@property int maxNumberOfLines;
+@property int minNumberOfLines;
+@property BOOL animateHeightChange;
+@property (nonatomic, strong) UITextView *internalTextView;	
+
+
+//uitextview properties
+@property(unsafe_unretained) NSObject<HPGrowingTextViewDelegate> *delegate;
+@property(nonatomic,strong) NSString *text;
+@property(nonatomic,strong) UIFont *font;
+@property(nonatomic,strong) UIColor *textColor;
+@property(nonatomic) UITextAlignment textAlignment;    // default is UITextAlignmentLeft
+@property(nonatomic) NSRange selectedRange;            // only ranges of length 0 are supported
+@property(nonatomic,getter=isEditable) BOOL editable;
+@property(nonatomic) UIDataDetectorTypes dataDetectorTypes __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_3_0);
+@property (nonatomic) UIReturnKeyType returnKeyType;
+@property (assign) UIEdgeInsets contentInset;
+@property(nonatomic) BOOL enablesReturnKeyAutomatically;
+
+//uitextview methods
+//need others? use .internalTextView
+- (BOOL)becomeFirstResponder;
+- (BOOL)resignFirstResponder;
+- (BOOL)isFirstResponder;
+
+- (BOOL)hasText;
+- (void)scrollRangeToVisible:(NSRange)range;
+
+@end

Classes/Utils/GrowingTextView/HPGrowingTextView.m

@@ -0,0 +1,539 @@
+//
+//  HPTextView.m
+//
+//  Created by Hans Pinckaers on 29-06-10.
+//
+//	MIT License
+//
+//	Copyright (c) 2011 Hans Pinckaers
+//
+//	Permission is hereby granted, free of charge, to any person obtaining a copy
+//	of this software and associated documentation files (the "Software"), to deal
+//	in the Software without restriction, including without limitation the rights
+//	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//	copies of the Software, and to permit persons to whom the Software is
+//	furnished to do so, subject to the following conditions:
+//
+//	The above copyright notice and this permission notice shall be included in
+//	all copies or substantial portions of the Software.
+//
+//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//	THE SOFTWARE.
+
+#import "HPGrowingTextView.h"
+#import "HPTextViewInternal.h"
+
+@interface HPGrowingTextView(private)
+-(void)commonInitialiser;
+-(void)resizeTextView:(NSInteger)newSizeH;
+-(void)growDidStop;
+@end
+
+@implementation HPGrowingTextView
+@synthesize internalTextView;
+@synthesize delegate;
+
+@synthesize font;
+@synthesize textColor;
+@synthesize textAlignment; 
+@synthesize selectedRange;
+@synthesize editable;
+@synthesize dataDetectorTypes; 
+@synthesize animateHeightChange;
+@synthesize returnKeyType;
+
+// having initwithcoder allows us to use HPGrowingTextView in a Nib. -- aob, 9/2011
+- (id)initWithCoder:(NSCoder *)aDecoder
+{
+    if ((self = [super initWithCoder:aDecoder])) {
+        [self commonInitialiser];
+    }
+    return self;
+}
+
+- (id)initWithFrame:(CGRect)frame {
+    if ((self = [super initWithFrame:frame])) {
+        [self commonInitialiser];
+    }
+    return self;
+}
+
+-(void)commonInitialiser
+{
+    // Initialization code
+    CGRect r = self.frame;
+    r.origin.y = 0;
+    r.origin.x = 0;
+    internalTextView = [[HPTextViewInternal alloc] initWithFrame:r];
+    internalTextView.delegate = self;
+    internalTextView.scrollEnabled = NO;
+    internalTextView.font = [UIFont fontWithName:@"Helvetica" size:13]; 
+    internalTextView.contentInset = UIEdgeInsetsZero;		
+    internalTextView.showsHorizontalScrollIndicator = NO;
+    internalTextView.text = @"-";
+    [self addSubview:internalTextView];
+    
+    minHeight = internalTextView.frame.size.height;
+    minNumberOfLines = 1;
+    
+    animateHeightChange = YES;
+    
+    internalTextView.text = @"";
+    
+    [self setMaxNumberOfLines:3];
+}
+
+-(CGSize)sizeThatFits:(CGSize)size
+{
+    if (self.text.length == 0) {
+        size.height = minHeight;
+    }
+    return size;
+}
+
+-(void)layoutSubviews
+{
+    [super layoutSubviews];
+    
+	CGRect r = self.bounds;
+	r.origin.y = 0;
+	r.origin.x = contentInset.left;
+    r.size.width -= contentInset.left + contentInset.right;
+    
+    internalTextView.frame = r;
+}
+
+-(void)setContentInset:(UIEdgeInsets)inset
+{
+    contentInset = inset;
+    
+    CGRect r = self.frame;
+    r.origin.y = inset.top - inset.bottom;
+    r.origin.x = inset.left;
+    r.size.width -= inset.left + inset.right;
+    
+    internalTextView.frame = r;
+    
+    [self setMaxNumberOfLines:maxNumberOfLines];
+    [self setMinNumberOfLines:minNumberOfLines];
+}
+
+-(UIEdgeInsets)contentInset
+{
+    return contentInset;
+}
+
+-(void)setMaxNumberOfLines:(int)n
+{
+    // Use internalTextView for height calculations, thanks to Gwynne <http://blog.darkrainfall.org/>
+    NSString *saveText = internalTextView.text, *newText = @"-";
+    
+    internalTextView.delegate = nil;
+    internalTextView.hidden = YES;
+    
+    for (int i = 1; i < n; ++i)
+        newText = [newText stringByAppendingString:@"\n|W|"];
+    
+    internalTextView.text = newText;
+    
+    maxHeight = internalTextView.contentSize.height;
+    
+    internalTextView.text = saveText;
+    internalTextView.hidden = NO;
+    internalTextView.delegate = self;
+    
+    [self sizeToFit];
+    
+    maxNumberOfLines = n;
+}
+
+-(int)maxNumberOfLines
+{
+    return maxNumberOfLines;
+}
+
+-(void)setMinNumberOfLines:(int)m
+{
+	// Use internalTextView for height calculations, thanks to Gwynne <http://blog.darkrainfall.org/>
+    NSString *saveText = internalTextView.text, *newText = @"-";
+    
+    internalTextView.delegate = nil;
+    internalTextView.hidden = YES;
+    
+    for (int i = 1; i < m; ++i)
+        newText = [newText stringByAppendingString:@"\n|W|"];
+    
+    internalTextView.text = newText;
+    
+    minHeight = internalTextView.contentSize.height;
+    
+    internalTextView.text = saveText;
+    internalTextView.hidden = NO;
+    internalTextView.delegate = self;
+    
+    [self sizeToFit];
+    
+    minNumberOfLines = m;
+}
+
+-(int)minNumberOfLines
+{
+    return minNumberOfLines;
+}
+
+
+- (void)textViewDidChange:(UITextView *)textView
+{	
+	//size of content, so we can set the frame of self
+	NSInteger newSizeH = internalTextView.contentSize.height;
+	if(newSizeH < minHeight || !internalTextView.hasText) newSizeH = minHeight; //not smalles than minHeight
+  if (internalTextView.frame.size.height > maxHeight) newSizeH = maxHeight; // not taller than maxHeight
+
+	if (internalTextView.frame.size.height != newSizeH)
+	{
+        // [fixed] Pasting too much text into the view failed to fire the height change, 
+        // thanks to Gwynne <http://blog.darkrainfall.org/>
+        
+        if (newSizeH > maxHeight && internalTextView.frame.size.height <= maxHeight)
+        {
+            newSizeH = maxHeight;
+        }
+        
+		if (newSizeH <= maxHeight)
+		{
+            if(animateHeightChange) {
+                
+                if ([UIView resolveClassMethod:@selector(animateWithDuration:animations:)]) {
+#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 40000
+                    [UIView animateWithDuration:0.1f 
+                                          delay:0 
+                                        options:(UIViewAnimationOptionAllowUserInteraction|
+                                                 UIViewAnimationOptionBeginFromCurrentState)                                 
+                                     animations:^(void) {
+                                         [self resizeTextView:newSizeH];
+                                     } 
+                                     completion:^(BOOL finished) {
+                                         if ([delegate respondsToSelector:@selector(growingTextView:didChangeHeight:)]) {
+                                             [delegate growingTextView:self didChangeHeight:newSizeH];
+                                         }
+                                     }];
+#endif
+                } else {
+                    [UIView beginAnimations:@"" context:nil];
+                    [UIView setAnimationDuration:0.1f];
+                    [UIView setAnimationDelegate:self];
+                    [UIView setAnimationDidStopSelector:@selector(growDidStop)];
+                    [UIView setAnimationBeginsFromCurrentState:YES];
+                    [self resizeTextView:newSizeH];
+                    [UIView commitAnimations];
+                }
+            } else {
+                [self resizeTextView:newSizeH];                
+                // [fixed] The growingTextView:didChangeHeight: delegate method was not called at all when not animating height changes.
+                // thanks to Gwynne <http://blog.darkrainfall.org/>
+                
+                if ([delegate respondsToSelector:@selector(growingTextView:didChangeHeight:)]) {
+                    [delegate growingTextView:self didChangeHeight:newSizeH];
+                }	
+            }
+		}
+		
+        
+        // if our new height is greater than the maxHeight
+        // sets not set the height or move things
+        // around and enable scrolling
+		if (newSizeH >= maxHeight)
+		{
+			if(!internalTextView.scrollEnabled){
+				internalTextView.scrollEnabled = YES;
+				[internalTextView flashScrollIndicators];
+			}
+			
+		} else {
+			internalTextView.scrollEnabled = NO;
+		}
+		
+	}
+	
+	
+	if ([delegate respondsToSelector:@selector(growingTextViewDidChange:)]) {
+		[delegate growingTextViewDidChange:self];
+	}
+	
+}
+
+-(void)resizeTextView:(NSInteger)newSizeH
+{
+    if ([delegate respondsToSelector:@selector(growingTextView:willChangeHeight:)]) {
+        [delegate growingTextView:self willChangeHeight:newSizeH];
+    }
+    
+    CGRect internalTextViewFrame = self.frame;
+    internalTextViewFrame.size.height = newSizeH; // + padding
+    self.frame = internalTextViewFrame;
+    
+    internalTextViewFrame.origin.y = contentInset.top - contentInset.bottom;
+    internalTextViewFrame.origin.x = contentInset.left;
+    internalTextViewFrame.size.width = internalTextView.contentSize.width;
+    
+    internalTextView.frame = internalTextViewFrame;
+}
+
+-(void)growDidStop
+{
+	if ([delegate respondsToSelector:@selector(growingTextView:didChangeHeight:)]) {
+		[delegate growingTextView:self didChangeHeight:self.frame.size.height];
+	}
+	
+}
+
+-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
+{
+    [internalTextView becomeFirstResponder];
+}
+
+- (BOOL)becomeFirstResponder
+{
+    [super becomeFirstResponder];
+    return [self.internalTextView becomeFirstResponder];
+}
+
+-(BOOL)resignFirstResponder
+{
+	[super resignFirstResponder];
+	return [internalTextView resignFirstResponder];
+}
+
+-(BOOL)isFirstResponder
+{
+  return [self.internalTextView isFirstResponder];
+}
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark UITextView properties
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+-(void)setText:(NSString *)newText
+{
+    internalTextView.text = newText;
+    
+    // include this line to analyze the height of the textview.
+    // fix from Ankit Thakur
+    [self performSelector:@selector(textViewDidChange:) withObject:internalTextView];
+}
+
+-(NSString*) text
+{
+    return internalTextView.text;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+-(void)setFont:(UIFont *)afont
+{
+	internalTextView.font= afont;
+	
+	[self setMaxNumberOfLines:maxNumberOfLines];
+	[self setMinNumberOfLines:minNumberOfLines];
+}
+
+-(UIFont *)font
+{
+	return internalTextView.font;
+}	
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+-(void)setTextColor:(UIColor *)color
+{
+	internalTextView.textColor = color;
+}
+
+-(UIColor*)textColor{
+	return internalTextView.textColor;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+-(void)setBackgroundColor:(UIColor *)backgroundColor
+{
+  [super setBackgroundColor:backgroundColor];
+	internalTextView.backgroundColor = backgroundColor;
+}
+
+-(UIColor*)backgroundColor
+{
+  return internalTextView.backgroundColor;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+-(void)setTextAlignment:(UITextAlignment)aligment
+{
+	internalTextView.textAlignment = aligment;
+}
+
+-(UITextAlignment)textAlignment
+{
+	return internalTextView.textAlignment;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+-(void)setSelectedRange:(NSRange)range
+{
+	internalTextView.selectedRange = range;
+}
+
+-(NSRange)selectedRange
+{
+	return internalTextView.selectedRange;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+-(void)setEditable:(BOOL)beditable
+{
+	internalTextView.editable = beditable;
+}
+
+-(BOOL)isEditable
+{
+	return internalTextView.editable;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+-(void)setReturnKeyType:(UIReturnKeyType)keyType
+{
+	internalTextView.returnKeyType = keyType;
+}
+
+-(UIReturnKeyType)returnKeyType
+{
+	return internalTextView.returnKeyType;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (void)setEnablesReturnKeyAutomatically:(BOOL)enablesReturnKeyAutomatically
+{
+  internalTextView.enablesReturnKeyAutomatically = enablesReturnKeyAutomatically;
+}
+
+- (BOOL)enablesReturnKeyAutomatically
+{
+  return internalTextView.enablesReturnKeyAutomatically;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+-(void)setDataDetectorTypes:(UIDataDetectorTypes)datadetector
+{
+	internalTextView.dataDetectorTypes = datadetector;
+}
+
+-(UIDataDetectorTypes)dataDetectorTypes
+{
+	return internalTextView.dataDetectorTypes;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (BOOL)hasText{
+	return [internalTextView hasText];
+}
+
+- (void)scrollRangeToVisible:(NSRange)range
+{
+	[internalTextView scrollRangeToVisible:range];
+}
+
+/////////////////////////////////////////////////////////////////////////////////////////////////////
+/////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+#pragma mark UITextViewDelegate
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+- (BOOL)textViewShouldBeginEditing:(UITextView *)textView {
+	if ([delegate respondsToSelector:@selector(growingTextViewShouldBeginEditing:)]) {
+		return [delegate growingTextViewShouldBeginEditing:self];
+		
+	} else {
+		return YES;
+	}
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+- (BOOL)textViewShouldEndEditing:(UITextView *)textView {
+	if ([delegate respondsToSelector:@selector(growingTextViewShouldEndEditing:)]) {
+		return [delegate growingTextViewShouldEndEditing:self];
+		
+	} else {
+		return YES;
+	}
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+- (void)textViewDidBeginEditing:(UITextView *)textView {
+	if ([delegate respondsToSelector:@selector(growingTextViewDidBeginEditing:)]) {
+		[delegate growingTextViewDidBeginEditing:self];
+	}
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+- (void)textViewDidEndEditing:(UITextView *)textView {		
+	if ([delegate respondsToSelector:@selector(growingTextViewDidEndEditing:)]) {
+		[delegate growingTextViewDidEndEditing:self];
+	}
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range
+ replacementText:(NSString *)atext {
+	
+	//weird 1 pixel bug when clicking backspace when textView is empty
+	if(![textView hasText] && [atext isEqualToString:@""]) return NO;
+	
+	//Added by bretdabaker: sometimes we want to handle this ourselves
+    	if ([delegate respondsToSelector:@selector(growingTextView:shouldChangeTextInRange:replacementText:)])
+        	return [delegate growingTextView:self shouldChangeTextInRange:range replacementText:atext];
+	
+	if ([atext isEqualToString:@"\n"]) {
+		if ([delegate respondsToSelector:@selector(growingTextViewShouldReturn:)]) {
+			if (![delegate performSelector:@selector(growingTextViewShouldReturn:) withObject:self]) {
+				return YES;
+			} else {
+				[textView resignFirstResponder];
+				return NO;
+			}
+		}
+	}
+	
+	return YES;
+	
+    
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+- (void)textViewDidChangeSelection:(UITextView *)textView {
+	if ([delegate respondsToSelector:@selector(growingTextViewDidChangeSelection:)]) {
+		[delegate growingTextViewDidChangeSelection:self];
+	}
+}
+
+
+
+@end

Classes/Utils/GrowingTextView/HPTextViewInternal.h

@@ -0,0 +1,34 @@
+//
+//  HPTextViewInternal.h
+//
+//  Created by Hans Pinckaers on 29-06-10.
+//
+//	MIT License
+//
+//	Copyright (c) 2011 Hans Pinckaers
+//
+//	Permission is hereby granted, free of charge, to any person obtaining a copy
+//	of this software and associated documentation files (the "Software"), to deal
+//	in the Software without restriction, including without limitation the rights
+//	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//	copies of the Software, and to permit persons to whom the Software is
+//	furnished to do so, subject to the following conditions:
+//
+//	The above copyright notice and this permission notice shall be included in
+//	all copies or substantial portions of the Software.
+//
+//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//	THE SOFTWARE.
+
+#import <UIKit/UIKit.h>
+
+
+@interface HPTextViewInternal : UITextView {
+}
+
+@end

Classes/Utils/GrowingTextView/HPTextViewInternal.m

@@ -0,0 +1,95 @@
+//
+//  HPTextViewInternal.m
+//
+//  Created by Hans Pinckaers on 29-06-10.
+//
+//	MIT License
+//
+//	Copyright (c) 2011 Hans Pinckaers
+//
+//	Permission is hereby granted, free of charge, to any person obtaining a copy
+//	of this software and associated documentation files (the "Software"), to deal
+//	in the Software without restriction, including without limitation the rights
+//	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//	copies of the Software, and to permit persons to whom the Software is
+//	furnished to do so, subject to the following conditions:
+//
+//	The above copyright notice and this permission notice shall be included in
+//	all copies or substantial portions of the Software.
+//
+//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//	THE SOFTWARE.
+
+#import "HPTextViewInternal.h"
+
+
+@implementation HPTextViewInternal
+
+-(void)setText:(NSString *)text
+{
+    BOOL originalValue = self.scrollEnabled;
+    //If one of GrowingTextView's superviews is a scrollView, and self.scrollEnabled == NO,
+    //setting the text programatically will cause UIKit to search upwards until it finds a scrollView with scrollEnabled==yes
+    //then scroll it erratically. Setting scrollEnabled temporarily to YES prevents this.
+    [self setScrollEnabled:YES];
+    [super setText:text];
+    [self setScrollEnabled:originalValue];
+}
+
+-(void)setContentOffset:(CGPoint)s
+{
+	if(self.tracking || self.decelerating){
+		//initiated by user...
+        
+        UIEdgeInsets insets = self.contentInset;
+        insets.bottom = 0;
+        insets.top = 0;
+        self.contentInset = insets;
+        
+	} else {
+
+		float bottomOffset = (self.contentSize.height - self.frame.size.height + self.contentInset.bottom);
+		if(s.y < bottomOffset && self.scrollEnabled){            
+            UIEdgeInsets insets = self.contentInset;
+            insets.bottom = 8;
+            insets.top = 0;
+            self.contentInset = insets;            
+        }
+	}
+    	
+	[super setContentOffset:s];
+}
+
+-(void)setContentInset:(UIEdgeInsets)s
+{
+	UIEdgeInsets insets = s;
+	
+	if(s.bottom>8) insets.bottom = 0;
+	insets.top = 0;
+
+	[super setContentInset:insets];
+}
+
+-(void)setContentSize:(CGSize)contentSize
+{
+    // is this an iOS5 bug? Need testing!
+    if(self.contentSize.height > contentSize.height)
+    {
+        UIEdgeInsets insets = self.contentInset;
+        insets.bottom = 0;
+        insets.top = 0;
+        self.contentInset = insets;
+    }
+    
+    [super setContentSize:contentSize];
+}
+
+
+
+
+@end