422 lines
16 KiB
Objective-C
422 lines
16 KiB
Objective-C
//
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// UMComEditTextView.m
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// UMCommunity
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//
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// Created by umeng on 15/11/11.
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// Copyright © 2015年 Umeng. All rights reserved.
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//
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#import "UMComEditTextView.h"
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#import "UMComResouceDefines.h"
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#import <UMComFoundation/UMUtils.h>
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#import "UMComMutiTextRun.h"
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#import <UMComFoundation/UMComKit+String.h>
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#import <UMComFoundation/UMComKit+Color.h>
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@interface UMComEditTextView () <UITextViewDelegate>
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@property (nonatomic, strong) UILabel *noticeLabel;
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@property (nonatomic, strong) NSMutableArray *regularExpressionArray;
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@end
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@implementation UMComEditTextView
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{
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BOOL isShowTopicNoticeBgView;
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}
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- (instancetype)initWithFrame:(CGRect)frame
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{
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self = [self initWithFrame:frame checkWords:nil regularExStrArray:nil];
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if (self) {
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}
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return self;
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}
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- (instancetype)initWithFrame:(CGRect)frame checkWords:(NSArray *)checkWords regularExStrArray:(NSArray *)regularExStrArray
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{
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if (UMSYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7")) {
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NSTextContainer *container = [[NSTextContainer alloc] initWithSize:CGSizeMake(frame.size.width, frame.size.height)];
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container.lineFragmentPadding = 2;
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container.size = CGSizeMake(self.frame.size.width, MAXFLOAT);//设置成最大得高度输入多文本滚动
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container.widthTracksTextView = YES;
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NSTextStorage *textStorage = [[NSTextStorage alloc]init];
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NSLayoutManager *layoutManager = [[NSLayoutManager alloc] init];
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[layoutManager addTextContainer:container];
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[textStorage addLayoutManager:layoutManager];
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self = [super initWithFrame:frame textContainer:container];
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//如果有话题则默认添加话题
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}else{
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self = [super initWithFrame:frame];
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}
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if (self) {
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_regularExpressionArray = [NSMutableArray arrayWithCapacity:regularExStrArray.count];
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for (NSString *regex in regularExStrArray) {
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NSRegularExpression *regularExpression = [NSRegularExpression
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regularExpressionWithPattern:regex
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options:NSRegularExpressionCaseInsensitive
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error:nil];
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if (regularExpression) {
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[_regularExpressionArray addObject:regularExpression];
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}
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}
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self.textColor= [UIColor blackColor];
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self.font = [UIFont systemFontOfSize:20];
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self.delegate = self;
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self.checkWords = checkWords;
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_noticeLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, self.bounds.size.width, self.bounds.size.height)];
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//_noticeLabel.backgroundColor = [UIColor clearColor];
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_noticeLabel.font = UMComFontNotoSansLightWithSafeSize(14);
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_noticeLabel.text = UMComLocalizedString(@"um_com_contentTooLong", @"抱歉，内容过长");
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_noticeLabel.textAlignment = NSTextAlignmentCenter;
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_noticeLabel.textColor = [UIColor blueColor];
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_noticeLabel.backgroundColor = [UIColor lightGrayColor];
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_noticeLabel.hidden = YES;
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[self addSubview:_noticeLabel];
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_placeholderLabel = [[UILabel alloc]initWithFrame:CGRectMake(5, -5, frame.size.width, 40)];
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_placeholderLabel.font = UMComFontNotoSansLightWithSafeSize(15);
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_placeholderLabel.backgroundColor = [UIColor clearColor];
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_placeholderLabel.textColor = [UIColor grayColor];
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[self addSubview:_placeholderLabel];
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_maxTextLenght = 1000;
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}
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return self;
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}
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- (void)updateEditTextView
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{
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[self textViewDidChange:self];
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[self matchWordsWithTextColor:UMComColorWithHexString(FontColorBlue)];
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}
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#pragma mark - UITextViewDelegate
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- (void)textViewDidChangeSelection:(UITextView *)textView
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{
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[self showPlaceHolderLabelWithTextView:textView];
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if (self.editDelegate && [self.editDelegate respondsToSelector:@selector(editTextViewDidChangeSelection:)]) {
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[self.editDelegate editTextViewDidChangeSelection:self];
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}
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}
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- (BOOL)textViewShouldEndEditing:(UITextView *)textView
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{
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return YES;
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}
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- (void)showPlaceHolderLabelWithTextView:(UITextView *)textView
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{
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if (textView.text.length > 0 && ![@" " isEqualToString:textView.text]) {
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self.placeholderLabel.hidden = YES;
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}else{
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self.placeholderLabel.hidden = NO;
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}
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}
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- (void)textViewDidEndEditing:(UITextView *)textView
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{
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if (textView.text.length == 0) {
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self.placeholderLabel.hidden = NO;
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}
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if (UMSYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(@"6")) {
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[self matchWordsWithTextColor:UMComColorWithHexString(FontColorBlue)];
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}
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if (self.editDelegate && [self.editDelegate respondsToSelector:@selector(editTextViewDidEndEditing:)]) {
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[self.editDelegate editTextViewDidEndEditing:self];
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}
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}
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- (void)hiddenTextView
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{
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self.noticeLabel.hidden = YES;
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}
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-(void) doShowPlaceHolderLabel
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{
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self.noticeLabel.hidden = NO;
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//显示noticeLabel的位置
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self.noticeLabel.frame = CGRectMake(self.contentOffset.x,self.contentOffset.y, self.bounds.size.width, self.bounds.size.height);
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[self performSelector:@selector(hiddenTextView) withObject:nil afterDelay:0.8f];
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}
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- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
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{
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//判断text的长度大于零，避免删除的情况不能编辑
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//if ([self getRealTextLength] > self.maxTextLenght && text.length > 0) {
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if (self.maxTextLenght <= 0) {
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return NO;
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}
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//当时删除的时候text为空,以此方法判断是否用户点击删除按键
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if ([text isEqualToString:@""]) {
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return YES;
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}
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NSInteger markLength = 0;//标记的长度
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UITextRange* curMarkText = textView.markedTextRange;
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if (curMarkText) {
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markLength = [self offsetFromPosition:curMarkText.start toPosition:curMarkText.end];
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}
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NSInteger curLength = 0.f;
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NSInteger nextLength = 0.f;
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curLength = [UMComKit getStringLengthWithString:self.text];//当前长度(用于判断表情)
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nextLength = [UMComKit getStringLengthWithString:text];//即将要输入的长度(用于判断表情)
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curLength -= markLength;
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if (curLength + nextLength > self.maxTextLenght ) {
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self.noticeLabel.hidden = NO;
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//显示noticeLabel的位置
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self.noticeLabel.frame = CGRectMake(self.contentOffset.x,self.contentOffset.y, self.bounds.size.width, self.bounds.size.height);
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[self performSelector:@selector(hiddenTextView) withObject:nil afterDelay:0.8f];
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return NO;
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}else{
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self.noticeLabel.hidden = YES;
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}
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if (self.editDelegate && [self.editDelegate respondsToSelector:@selector(editTextView:shouldChangeTextInRange:replacementText:complection:)]) {
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__weak typeof(self) weakSelf = self;
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return [self.editDelegate editTextView:self shouldChangeTextInRange:range replacementText:text complection:^{
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[weakSelf textViewDidChange:weakSelf];
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}];
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}
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return YES;
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}
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- (void)textViewDidChange:(UITextView *)textView
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{
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if (UMSYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7")) {
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[self matchWordsWithTextColor:UMComColorWithHexString(FontColorBlue)];
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}
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[self showPlaceHolderLabelWithTextView:textView];
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//http://stackoverflow.com/questions/19948394/textviewdidchange-crashes-in-ios-7
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if (textView.markedTextRange) {
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//联想输入的时候，不需要计算其长度
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return;
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}
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//此处判断是否达到最大长度限制
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NSInteger curLength = [UMComKit getStringLengthWithString:self.text];//当前长度(用于判断表情)
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if (curLength > self.maxTextLenght && self.maxTextLenght > 0) {
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[self doShowPlaceHolderLabel];
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self.text = [self.text substringToIndex:self.maxTextLenght];
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}
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}
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#pragma mark - textUpdata
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- (void)matchWordsWithTextColor:(UIColor *)color
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{
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if (self.text.length == 0) {
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return;
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}
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if (self.getCheckWords) {
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self.checkWords = self.getCheckWords();
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}
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__weak typeof(self) weakSelf = self;
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if (UMSYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7")) {
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[self updateiOS7AndLaterTextWithColor:color checkWords:self.checkWords completion:^(NSArray *matchWords) {
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if (weakSelf.editDelegate && [weakSelf.editDelegate respondsToSelector:@selector(editTextViewDidUpdate:matchWords:)]) {
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weakSelf.checkWords = [weakSelf.editDelegate editTextViewDidUpdate:weakSelf matchWords:[matchWords valueForKeyPath:@"text"]];
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}
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}];
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}else{
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[self creatHighLightWithFont:self.font color:color checkWords:self.checkWords complection:^(NSArray * matchWords, NSMutableAttributedString *attributedString) {
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if (self.editDelegate && [self.editDelegate respondsToSelector:@selector(editTextViewDidUpdate:matchWords:)]) {
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[self.editDelegate editTextViewDidUpdate:weakSelf matchWords:[matchWords valueForKeyPath:@"text"]];
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}
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weakSelf.attributedText = attributedString;
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}];
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}
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[self reloadInputViews];
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}
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- (NSArray *)rangeArrayOfSubString:(NSString *)subString originStrin:(NSString *)originString lastRangeArray:(NSArray *)lastRangeArray
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{
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if (originString.length >= subString.length) {
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NSMutableArray *rangeArray = [NSMutableArray array];
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if (lastRangeArray.count > 0) {
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[rangeArray addObjectsFromArray:lastRangeArray];
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}
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NSRange macthRange = [originString rangeOfString:subString];
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if (macthRange.length > 0) {
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NSValue *rangeValue = [NSValue valueWithRange:macthRange];
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[rangeArray addObject:rangeValue];
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[self rangeArrayOfSubString:subString originStrin:[originString substringFromIndex:macthRange.length - 1] lastRangeArray:rangeArray];
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}
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return rangeArray;
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}
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return lastRangeArray;
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}
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- (void)updateiOS7AndLaterTextWithColor:(UIColor *)color
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checkWords:(NSArray *)checkWords
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completion:(void (^) (NSArray *matchWords))block
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{
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[self.textStorage addAttribute:NSForegroundColorAttributeName value:[UIColor blackColor] range:NSMakeRange(0, self.textStorage.length)];
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NSMutableArray *HLTextUnits = [NSMutableArray array];
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for (NSString *checkWord in checkWords) {
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NSRegularExpression *regular = [NSRegularExpression regularExpressionWithPattern:checkWord options:NSRegularExpressionDotMatchesLineSeparators error:nil];
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NSArray *matchs = [regular matchesInString:self.textStorage.string
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options:0
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range:NSMakeRange(0, [self.textStorage.string length])];
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for (NSTextCheckingResult *match in matchs) {
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[self.textStorage addAttribute:NSForegroundColorAttributeName value:color range:match.range];
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if (![[HLTextUnits valueForKeyPath:@"text"] containsObject:checkWord]) {
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UMComHighLightTextUnit *textUnit = [UMComHighLightTextUnit textUnitWithText:checkWord font:self.font textColor:color range:match.range];
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[HLTextUnits addObject:textUnit];
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}
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}
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}
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if (block) {
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block(HLTextUnits);
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}
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}
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//产生高亮字体
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- (void)creatHighLightWithFont:(UIFont *)font color:(UIColor *)color checkWords:(NSArray *)checkWords complection:(void(^)(NSArray *checkWords ,NSMutableAttributedString *attributedString))block
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{
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if (self.text.length == 0) {
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return;
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}
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NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc]initWithString:self.text];
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self.attributedText = attributedString;
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[attributedString addAttribute:NSForegroundColorAttributeName value:(id)[UIColor blackColor] range:NSMakeRange(0, attributedString.length-1)];
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NSString *string = attributedString.string;
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NSMutableArray *HLTextUnits = [NSMutableArray array];
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for (NSRegularExpression *regularExpression in _regularExpressionArray) {
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NSArray *matchs = [regularExpression matchesInString:string options:0 range:NSMakeRange(0, string.length)];
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if ([regularExpression.pattern isEqualToString:UrlRelerSring]) {
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for (NSTextCheckingResult *match in matchs)
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{
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NSString* matchText = [self.textStorage.string substringWithRange:match.range];
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[attributedString addAttribute:(id)NSForegroundColorAttributeName value:(id)color range:match.range];
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if (![[HLTextUnits valueForKeyPath:@"text"] containsObject:matchText]) {
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UMComHighLightTextUnit *textUnit = [UMComHighLightTextUnit textUnitWithText:matchText font:self.font textColor:color range:match.range];
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[HLTextUnits addObject:textUnit];
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}
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}
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}else{
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for (NSTextCheckingResult *match in matchs)
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{
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NSRange matchRange = NSMakeRange(match.range.location, match.range.length);
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NSString *matchText = [string substringWithRange:matchRange];
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for (NSString *checkWord in checkWords) {
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if ([matchText isEqualToString:checkWord]) {
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[attributedString addAttribute:(id)NSForegroundColorAttributeName value:(id)color range:match.range];
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if (![[HLTextUnits valueForKeyPath:@"text"] containsObject:matchText]) {
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UMComHighLightTextUnit *textUnit = [UMComHighLightTextUnit textUnitWithText:matchText font:self.font textColor:color range:match.range];
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[HLTextUnits addObject:textUnit];
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}
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}
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}
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}
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}
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}
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[attributedString addAttribute:NSFontAttributeName value:(id)font range:NSMakeRange(0, attributedString.length)];
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if (block) {
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block(HLTextUnits, attributedString);
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}
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}
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- (NSInteger)getRealTextLength
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{
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NSInteger topicAndUserLength = 0;
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NSMutableArray *matchs = [NSMutableArray array];
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for (NSRegularExpression *regularExpression in _regularExpressionArray) {
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NSArray *subMatchs = [regularExpression matchesInString:self.text options:0 range:NSMakeRange(0, self.text.length)];
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if (subMatchs.count > 0) {
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[matchs addObjectsFromArray:subMatchs];
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}
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}
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NSArray *checkWords = self.checkWords;
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for (NSTextCheckingResult *match in matchs)
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{
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for (NSString *item in checkWords) {
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NSRange matchRange = NSMakeRange(match.range.location, match.range.length);
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NSString *matchText = [self.text substringWithRange:matchRange];
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if ([item isEqualToString:matchText]) {
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topicAndUserLength += [UMComKit getStringLengthWithString:matchText];
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}
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}
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}
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NSString *realTextString = [self.text stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];
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NSInteger realTextLength = [UMComKit getStringLengthWithString:realTextString] - topicAndUserLength;
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return realTextLength;
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}
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/*
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// Only override drawRect: if you perform custom drawing.
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// An empty implementation adversely affects performance during animation.
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- (void)drawRect:(CGRect)rect {
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// Drawing code
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}
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*/
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-(BOOL)checkMaxLength:(NSString*)text
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{
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if (!text) {
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return NO;
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}
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NSInteger curLength = [UMComKit getStringLengthWithString:text];
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if (curLength> self.maxTextLenght ) {
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self.noticeLabel.hidden = NO;
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//显示noticeLabel的位置
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self.noticeLabel.frame = CGRectMake(self.contentOffset.x,self.contentOffset.y, self.bounds.size.width, self.bounds.size.height);
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[self performSelector:@selector(hiddenTextView) withObject:nil afterDelay:0.8f];
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return YES;
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}
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else{
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return NO;
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}
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}
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@end
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@implementation UMComHighLightTextUnit
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- (instancetype)initWithTextUnitWithText:(NSString *)text
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font:(UIFont *)font
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textColor:(UIColor *)color
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range:(NSRange)range
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{
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self = [super init];
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if (self) {
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self.text = text;
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self.textColor = color;
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self.font = font;
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self.range = range;
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}
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return self;
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}
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+ (UMComHighLightTextUnit *)textUnitWithText:(NSString *)text
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font:(UIFont *)font
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textColor:(UIColor *)color
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range:(NSRange)range
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{
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UMComHighLightTextUnit *textUnit = [[UMComHighLightTextUnit alloc]initWithTextUnitWithText:text font:font textColor:color range:range];
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return textUnit;
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}
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@end
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