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+//
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+// CPDFDropDownMenu.m
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+// compdfkit-tools
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+//
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+// Copyright © 2014-2023 PDF Technologies, Inc. All Rights Reserved.
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+//
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+// THIS SOURCE CODE AND ANY ACCOMPANYING DOCUMENTATION ARE PROTECTED BY INTERNATIONAL COPYRIGHT LAW
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+// AND MAY NOT BE RESOLD OR REDISTRIBUTED. USAGE IS BOUND TO THE ComPDFKit LICENSE AGREEMENT.
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+// UNAUTHORIZED REPRODUCTION OR DISTRIBUTION IS SUBJECT TO CIVIL AND CRIMINAL PENALTIES.
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+// This notice may not be removed from this file.
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+//
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+
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+#import "CPDFDropDownMenu.h"
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+
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+@interface CPDFDropDownMenu()<UITextFieldDelegate,UITableViewDelegate,UITableViewDataSource>
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+
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+@property (nonatomic, strong) UITableView * optionList;
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+
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+@property (nonatomic, strong) UIButton * pullDownButton;
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+
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+@property (nonatomic, assign) BOOL isShown;
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+
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+@property (nonatomic, assign) CGFloat menuMaxHeight;
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+
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+@property (nonatomic, strong) UITextField * contextField;
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+
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+@end
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+
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+@implementation CPDFDropDownMenu
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+
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+- (instancetype)initWithFrame:(CGRect)frame{
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+ if (self = [super initWithFrame:frame]) {
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+ [self setUp];
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+ }
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+ return self;
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+}
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+
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+- (void)setUp{
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+ self.contextField = [[UITextField alloc] initWithFrame:CGRectZero];
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+ self.contextField.delegate = self;
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+ self.contextField.enabled = YES;
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+ self.contextField.textColor = [UIColor darkGrayColor];
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+ [self addSubview:self.contextField];
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+
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+ self.pullDownButton = [UIButton buttonWithType:UIButtonTypeCustom];
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+ [self.pullDownButton addTarget:self action:@selector(showOrHide) forControlEvents:UIControlEventTouchUpInside];
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+ [self.pullDownButton setImage:[UIImage imageNamed:@"CPDFEditDown" inBundle:[NSBundle bundleForClass:self.class] compatibleWithTraitCollection:nil] forState:UIControlStateNormal];
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+ [self addSubview:self.pullDownButton];
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+
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+ self.showBorder = YES;
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+ self.textColor = [UIColor darkGrayColor];
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+ self.font = [UIFont systemFontOfSize:16.];
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+ self.rowHeight = 40;
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+ self.userInteractionEnabled = YES;
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+}
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+
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+- (void)showOrHide{
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+ if(self.isShown){
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+ [UIView animateWithDuration:0.3 animations:^{
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+ self.pullDownButton.transform = CGAffineTransformMakeRotation(M_PI *2);
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+ CGRect frame = CGRectMake(self.frame.origin.x, self.frame.origin.y + self.frame.size.height - 0.5, self.frame.size.width, 0);
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+ CGRect newFrame = [self convertRect:frame toView:self.superview.superview];
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+ self.optionList.frame = newFrame;
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+
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+ } completion:^(BOOL finished) {
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+ self.pullDownButton.transform = CGAffineTransformMakeRotation(0);
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+ self.isShown = false;
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+ }];
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+ }else{
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+ [self.contextField resignFirstResponder];
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+ [self.optionList reloadData];
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+
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+ [UIView animateWithDuration:0.3 animations:^{
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+ self.pullDownButton.transform = CGAffineTransformMakeRotation(M_PI);
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+
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+ CGRect frame = CGRectMake(self.frame.origin.x, self.frame.origin.y + self.frame.size.height - 0.5, self.frame.size.width, self.menuHeight);
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+ CGRect newFrame = [self convertRect:frame toView:self.superview.superview];
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+
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+ self.optionList.frame = newFrame;
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+
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+ } completion:^(BOOL finished) {
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+ self.isShown = true;
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+ }];
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+ }
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+
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+}
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+
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+- (void)setShowBorder:(BOOL)showBorder {
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+ _showBorder = showBorder;
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+ if(self.showBorder){
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+ self.layer.borderColor = [UIColor lightGrayColor].CGColor;
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+ self.layer.borderWidth = 0.5;
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+ self.layer.masksToBounds = YES;
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+ self.layer.cornerRadius = 2.5;
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+ }else{
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+ self.layer.borderColor = [UIColor clearColor].CGColor;
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+ self.layer.masksToBounds = NO;
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+ self.layer.cornerRadius = 0;
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+ self.layer.borderWidth = 0;
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+ }
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+
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+}
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+
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+#pragma mark - Setter and Getter
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+- (void)setMenuHeight:(CGFloat)menuHeight{
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+ _menuHeight = menuHeight;
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+ [self reloadData];
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+}
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+
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+- (void)setRowHeight:(CGFloat)rowHeight{
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+ _rowHeight = rowHeight;
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+ [self reloadData];
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+}
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+
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+- (void)setOptions:(NSMutableArray *)options{
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+ _options = options;
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+ [self reloadData];
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+}
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+
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+- (void)setDefaultValue:(NSString *)defaultValue{
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+ _defaultValue = defaultValue;
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+ self.contextField.text = defaultValue;
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+}
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+
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+- (void)reloadData{
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+ if(!self.isShown){
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+ return;
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+ }
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+
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+ [self.optionList reloadData];
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+
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+ [UIView animateWithDuration:0.3 animations:^{
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+ self.pullDownButton.transform = CGAffineTransformMakeRotation(M_PI);
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+ CGRect frame = CGRectMake(self.frame.origin.x, self.frame.origin.y + self.frame.size.height - 0.5, self.frame.size.width, self.menuHeight);
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+ CGRect newFrame = [self convertRect:frame toView:self.superview.superview];
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+
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+ self.optionList.frame = newFrame;
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+ }];
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+}
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+
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+- (void)layoutSubviews{
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+ [super layoutSubviews];
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+ self.contextField.frame = CGRectMake(15, 5, self.frame.size.width - 50, self.frame.size.height - 10);
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+ self.pullDownButton.frame = CGRectMake(self.frame.size.width - 35, 0, 30, 30);
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+
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+}
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+
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+#pragma mark - listView
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+- (UITableView *)optionList{
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+ if(!_optionList){
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+ CGRect frame = CGRectMake(self.frame.origin.x, self.frame.origin.y + self.frame.size.height, self.frame.size.width, 0);
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+ CGRect newFrame = [self convertRect:frame toView:self.superview.superview];
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+ _optionList = [[UITableView alloc]initWithFrame:newFrame style:UITableViewStylePlain];
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+ _optionList.backgroundColor = [UIColor colorWithRed:0.9 green:0.9 blue:0.9 alpha:1.0];
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+ _optionList.delegate = self;
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+ _optionList.dataSource = self;
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+ _optionList.layer.borderColor = [UIColor lightGrayColor].CGColor;
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+ _optionList.layer.borderWidth = 0.5;
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+ _optionList.allowsSelection = YES;
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+ [self.superview.superview addSubview:_optionList];
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+ }
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+
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+ return _optionList;
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+}
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+
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+#pragma mark - UITextFieldDelegate
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+- (BOOL)textFieldShouldReturn:(UITextField *)textField{
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+ if(textField.text.length > 0){
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+ self.defaultValue = textField.text;
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+ if(self.delegate && [self.delegate respondsToSelector:@selector(dropDownMenu:didEditWithText:)]){
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+ [self.delegate dropDownMenu:self didEditWithText:textField.text];
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+ }
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+ }
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+
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+ return YES;
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+}
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+
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+#pragma mark - UItableViewDelegate + UITableViewDataSource
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+- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
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+ return 1;
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+}
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+
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+- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
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+ return self.options.count;
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+}
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+
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+- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
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+ static NSString * reuseIdentifier = @"tableViewIdentifier";
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+ UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:reuseIdentifier];
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+ if(!cell){
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+ cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:reuseIdentifier];
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+ };
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+ cell.textLabel.text = self.options[indexPath.row];
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+ cell.textLabel.font = self.font;
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+ cell.textLabel.textColor = self.textColor;
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+ cell.userInteractionEnabled = YES;
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+
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+
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+ return cell;
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+}
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+
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+- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
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+ return self.rowHeight;
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+}
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+
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+- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
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+ self.contextField.text = self.options[indexPath.row];
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+ self.defaultValue = self.contextField.text;
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+ if(self.delegate && [self.delegate respondsToSelector:@selector(dropDownMenu:didSelectWithIndex:)]) {
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+ [self.delegate dropDownMenu:self didSelectWithIndex:indexPath.row];
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+ }
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+ [self showOrHide];
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+}
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+
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+@end
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