mirror of
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synced 2026-05-14 03:40:00 +02:00
Add GrowingTextView to the project
This commit is contained in:
ylecollen
+666
@@ -0,0 +1,666 @@
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//
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// HPTextView.m
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//
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// Created by Hans Pinckaers on 29-06-10.
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//
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// MIT License
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//
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// Copyright (c) 2011 Hans Pinckaers
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#import "HPGrowingTextView.h"
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#import "HPTextViewInternal.h"
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@interface HPGrowingTextView(private)
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-(void)commonInitialiser;
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-(void)resizeTextView:(NSInteger)newSizeH;
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-(void)growDidStop;
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@end
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@implementation HPGrowingTextView
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@synthesize internalTextView;
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@synthesize delegate;
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@synthesize maxHeight;
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@synthesize minHeight;
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@synthesize font;
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@synthesize textColor;
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@synthesize textAlignment;
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@synthesize selectedRange;
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@synthesize editable;
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@synthesize dataDetectorTypes;
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@synthesize animateHeightChange;
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@synthesize animationDuration;
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@synthesize returnKeyType;
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@dynamic placeholder;
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@dynamic placeholderColor;
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// having initwithcoder allows us to use HPGrowingTextView in a Nib. -- aob, 9/2011
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- (id)initWithCoder:(NSCoder *)aDecoder
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{
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if ((self = [super initWithCoder:aDecoder])) {
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[self commonInitialiser];
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}
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return self;
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}
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- (id)initWithFrame:(CGRect)frame {
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if ((self = [super initWithFrame:frame])) {
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[self commonInitialiser];
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}
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return self;
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}
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#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
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- (id)initWithFrame:(CGRect)frame textContainer:(NSTextContainer *)textContainer {
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if ((self = [super initWithFrame:frame])) {
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[self commonInitialiser:textContainer];
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}
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return self;
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}
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-(void)commonInitialiser {
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[self commonInitialiser:nil];
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}
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-(void)commonInitialiser:(NSTextContainer *)textContainer
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#else
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-(void)commonInitialiser
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#endif
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{
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// Initialization code
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CGRect r = self.frame;
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r.origin.y = 0;
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r.origin.x = 0;
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#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000
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internalTextView = [[HPTextViewInternal alloc] initWithFrame:r textContainer:textContainer];
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#else
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internalTextView = [[HPTextViewInternal alloc] initWithFrame:r];
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#endif
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internalTextView.delegate = self;
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internalTextView.scrollEnabled = NO;
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internalTextView.font = [UIFont fontWithName:@"Helvetica" size:13];
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internalTextView.contentInset = UIEdgeInsetsZero;
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internalTextView.showsHorizontalScrollIndicator = NO;
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internalTextView.text = @"-";
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internalTextView.contentMode = UIViewContentModeRedraw;
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[self addSubview:internalTextView];
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minHeight = internalTextView.frame.size.height;
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minNumberOfLines = 1;
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animateHeightChange = YES;
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animationDuration = 0.1f;
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internalTextView.text = @"";
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[self setMaxNumberOfLines:3];
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[self setPlaceholderColor:[UIColor lightGrayColor]];
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internalTextView.displayPlaceHolder = YES;
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}
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-(CGSize)sizeThatFits:(CGSize)size
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{
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if (self.text.length == 0) {
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size.height = minHeight;
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}
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return size;
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}
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-(void)layoutSubviews
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{
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[super layoutSubviews];
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CGRect r = self.bounds;
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r.origin.y = 0;
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r.origin.x = contentInset.left;
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r.size.width -= contentInset.left + contentInset.right;
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internalTextView.frame = r;
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}
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-(void)setContentInset:(UIEdgeInsets)inset
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{
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contentInset = inset;
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CGRect r = self.frame;
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r.origin.y = inset.top - inset.bottom;
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r.origin.x = inset.left;
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r.size.width -= inset.left + inset.right;
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internalTextView.frame = r;
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[self setMaxNumberOfLines:maxNumberOfLines];
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[self setMinNumberOfLines:minNumberOfLines];
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}
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-(UIEdgeInsets)contentInset
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{
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return contentInset;
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}
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-(void)setMaxNumberOfLines:(int)n
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{
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if(n == 0 && maxHeight > 0) return; // the user specified a maxHeight themselves.
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// Use internalTextView for height calculations, thanks to Gwynne <http://blog.darkrainfall.org/>
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NSString *saveText = internalTextView.text, *newText = @"-";
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internalTextView.delegate = nil;
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internalTextView.hidden = YES;
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for (int i = 1; i < n; ++i)
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newText = [newText stringByAppendingString:@"\n|W|"];
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internalTextView.text = newText;
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maxHeight = [self measureHeight];
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internalTextView.text = saveText;
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internalTextView.hidden = NO;
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internalTextView.delegate = self;
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[self sizeToFit];
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maxNumberOfLines = n;
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}
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-(int)maxNumberOfLines
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{
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return maxNumberOfLines;
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}
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- (void)setMaxHeight:(int)height
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{
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maxHeight = height;
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maxNumberOfLines = 0;
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}
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-(void)setMinNumberOfLines:(int)m
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{
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if(m == 0 && minHeight > 0) return; // the user specified a minHeight themselves.
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// Use internalTextView for height calculations, thanks to Gwynne <http://blog.darkrainfall.org/>
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NSString *saveText = internalTextView.text, *newText = @"-";
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internalTextView.delegate = nil;
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internalTextView.hidden = YES;
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for (int i = 1; i < m; ++i)
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newText = [newText stringByAppendingString:@"\n|W|"];
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internalTextView.text = newText;
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minHeight = [self measureHeight];
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internalTextView.text = saveText;
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internalTextView.hidden = NO;
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internalTextView.delegate = self;
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[self sizeToFit];
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minNumberOfLines = m;
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}
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-(int)minNumberOfLines
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{
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return minNumberOfLines;
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}
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- (void)setMinHeight:(int)height
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{
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minHeight = height;
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minNumberOfLines = 0;
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}
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- (NSString *)placeholder
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{
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return internalTextView.placeholder;
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}
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- (void)setPlaceholder:(NSString *)placeholder
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{
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[internalTextView setPlaceholder:placeholder];
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[internalTextView setNeedsDisplay];
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}
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- (UIColor *)placeholderColor
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{
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return internalTextView.placeholderColor;
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}
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- (void)setPlaceholderColor:(UIColor *)placeholderColor
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{
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[internalTextView setPlaceholderColor:placeholderColor];
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}
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- (void)textViewDidChange:(UITextView *)textView
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{
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[self refreshHeight];
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}
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- (void)refreshHeight
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{
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//size of content, so we can set the frame of self
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NSInteger newSizeH = [self measureHeight];
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if (newSizeH < minHeight || !internalTextView.hasText) {
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newSizeH = minHeight; //not smalles than minHeight
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}
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else if (maxHeight && newSizeH > maxHeight) {
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newSizeH = maxHeight; // not taller than maxHeight
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}
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if (internalTextView.frame.size.height != newSizeH)
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{
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// if our new height is greater than the maxHeight
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// sets not set the height or move things
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// around and enable scrolling
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if (newSizeH >= maxHeight)
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{
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if(!internalTextView.scrollEnabled){
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internalTextView.scrollEnabled = YES;
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[internalTextView flashScrollIndicators];
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}
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} else {
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internalTextView.scrollEnabled = NO;
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}
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// [fixed] Pasting too much text into the view failed to fire the height change,
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// thanks to Gwynne <http://blog.darkrainfall.org/>
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if (newSizeH <= maxHeight)
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{
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if(animateHeightChange) {
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if ([UIView resolveClassMethod:@selector(animateWithDuration:animations:)]) {
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#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 40000
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[UIView animateWithDuration:animationDuration
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delay:0
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options:(UIViewAnimationOptionAllowUserInteraction|
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UIViewAnimationOptionBeginFromCurrentState)
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animations:^(void) {
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[self resizeTextView:newSizeH];
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}
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completion:^(BOOL finished) {
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if ([delegate respondsToSelector:@selector(growingTextView:didChangeHeight:)]) {
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[delegate growingTextView:self didChangeHeight:newSizeH];
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}
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}];
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#endif
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} else {
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[UIView beginAnimations:@"" context:nil];
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[UIView setAnimationDuration:animationDuration];
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[UIView setAnimationDelegate:self];
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[UIView setAnimationDidStopSelector:@selector(growDidStop)];
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[UIView setAnimationBeginsFromCurrentState:YES];
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[self resizeTextView:newSizeH];
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[UIView commitAnimations];
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}
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} else {
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[self resizeTextView:newSizeH];
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// [fixed] The growingTextView:didChangeHeight: delegate method was not called at all when not animating height changes.
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// thanks to Gwynne <http://blog.darkrainfall.org/>
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if ([delegate respondsToSelector:@selector(growingTextView:didChangeHeight:)]) {
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[delegate growingTextView:self didChangeHeight:newSizeH];
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}
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}
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}
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}
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// Display (or not) the placeholder string
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BOOL wasDisplayingPlaceholder = internalTextView.displayPlaceHolder;
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internalTextView.displayPlaceHolder = self.internalTextView.text.length == 0;
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if (wasDisplayingPlaceholder != internalTextView.displayPlaceHolder) {
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[internalTextView setNeedsDisplay];
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}
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// scroll to caret (needed on iOS7)
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if ([self respondsToSelector:@selector(snapshotViewAfterScreenUpdates:)])
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{
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[self performSelector:@selector(resetScrollPositionForIOS7) withObject:nil afterDelay:0.1f];
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}
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// Tell the delegate that the text view changed
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if ([delegate respondsToSelector:@selector(growingTextViewDidChange:)]) {
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[delegate growingTextViewDidChange:self];
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}
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}
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// Code from apple developer forum - @Steve Krulewitz, @Mark Marszal, @Eric Silverberg
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- (CGFloat)measureHeight
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{
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if ([self respondsToSelector:@selector(snapshotViewAfterScreenUpdates:)])
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{
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return ceilf([self.internalTextView sizeThatFits:self.internalTextView.frame.size].height);
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}
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else {
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return self.internalTextView.contentSize.height;
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}
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}
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- (void)resetScrollPositionForIOS7
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{
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CGRect r = [internalTextView caretRectForPosition:internalTextView.selectedTextRange.end];
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CGFloat caretY = MAX(r.origin.y - internalTextView.frame.size.height + r.size.height + 8, 0);
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if (internalTextView.contentOffset.y < caretY && r.origin.y != INFINITY)
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internalTextView.contentOffset = CGPointMake(0, caretY);
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}
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-(void)resizeTextView:(NSInteger)newSizeH
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{
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if ([delegate respondsToSelector:@selector(growingTextView:willChangeHeight:)]) {
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[delegate growingTextView:self willChangeHeight:newSizeH];
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}
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CGRect internalTextViewFrame = self.frame;
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internalTextViewFrame.size.height = newSizeH; // + padding
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self.frame = internalTextViewFrame;
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internalTextViewFrame.origin.y = contentInset.top - contentInset.bottom;
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internalTextViewFrame.origin.x = contentInset.left;
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if(!CGRectEqualToRect(internalTextView.frame, internalTextViewFrame)) internalTextView.frame = internalTextViewFrame;
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}
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- (void)growDidStop
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{
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// scroll to caret (needed on iOS7)
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if ([self respondsToSelector:@selector(snapshotViewAfterScreenUpdates:)])
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{
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[self resetScrollPositionForIOS7];
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}
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if ([delegate respondsToSelector:@selector(growingTextView:didChangeHeight:)]) {
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[delegate growingTextView:self didChangeHeight:self.frame.size.height];
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}
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}
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-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
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{
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[internalTextView becomeFirstResponder];
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}
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- (BOOL)becomeFirstResponder
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{
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[super becomeFirstResponder];
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return [self.internalTextView becomeFirstResponder];
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}
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-(BOOL)resignFirstResponder
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{
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[super resignFirstResponder];
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return [internalTextView resignFirstResponder];
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}
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-(BOOL)isFirstResponder
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{
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return [self.internalTextView isFirstResponder];
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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#pragma mark UITextView properties
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///////////////////////////////////////////////////////////////////////////////////////////////////
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-(void)setText:(NSString *)newText
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{
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internalTextView.text = newText;
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// include this line to analyze the height of the textview.
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// fix from Ankit Thakur
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[self performSelector:@selector(textViewDidChange:) withObject:internalTextView];
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}
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-(NSString*) text
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{
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return internalTextView.text;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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-(void)setFont:(UIFont *)afont
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{
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internalTextView.font= afont;
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[self setMaxNumberOfLines:maxNumberOfLines];
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[self setMinNumberOfLines:minNumberOfLines];
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}
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-(UIFont *)font
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{
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return internalTextView.font;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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-(void)setTextColor:(UIColor *)color
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{
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internalTextView.textColor = color;
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}
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-(UIColor*)textColor{
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return internalTextView.textColor;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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-(void)setBackgroundColor:(UIColor *)backgroundColor
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{
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[super setBackgroundColor:backgroundColor];
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internalTextView.backgroundColor = backgroundColor;
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}
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-(UIColor*)backgroundColor
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{
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return internalTextView.backgroundColor;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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-(void)setTextAlignment:(NSTextAlignment)aligment
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{
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internalTextView.textAlignment = aligment;
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}
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-(NSTextAlignment)textAlignment
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{
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return internalTextView.textAlignment;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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-(void)setSelectedRange:(NSRange)range
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{
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internalTextView.selectedRange = range;
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}
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||||
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||||
-(NSRange)selectedRange
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{
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return internalTextView.selectedRange;
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||||
}
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||||
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||||
///////////////////////////////////////////////////////////////////////////////////////////////////
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||||
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- (void)setIsScrollable:(BOOL)isScrollable
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{
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internalTextView.scrollEnabled = isScrollable;
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}
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||||
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- (BOOL)isScrollable
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{
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return internalTextView.scrollEnabled;
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}
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||||
///////////////////////////////////////////////////////////////////////////////////////////////////
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||||
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||||
-(void)setEditable:(BOOL)beditable
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{
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||||
internalTextView.editable = beditable;
|
||||
}
|
||||
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||||
-(BOOL)isEditable
|
||||
{
|
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return internalTextView.editable;
|
||||
}
|
||||
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||||
///////////////////////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
-(void)setReturnKeyType:(UIReturnKeyType)keyType
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||||
{
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||||
internalTextView.returnKeyType = keyType;
|
||||
}
|
||||
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||||
-(UIReturnKeyType)returnKeyType
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||||
{
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||||
return internalTextView.returnKeyType;
|
||||
}
|
||||
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||||
///////////////////////////////////////////////////////////////////////////////////////////////////
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||||
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||||
- (void)setKeyboardType:(UIKeyboardType)keyType
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||||
{
|
||||
internalTextView.keyboardType = keyType;
|
||||
}
|
||||
|
||||
- (UIKeyboardType)keyboardType
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||||
{
|
||||
return internalTextView.keyboardType;
|
||||
}
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
- (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
|
||||
Reference in New Issue
Block a user