kmpdfkit_demo/PDFViewer/Source/PDFLink/PDFLinkViewController.m

//
//  PDFLinkViewController.m
//  PDFReader
//
//  Copyright © 2014-2022 PDF Technologies, Inc. All Rights Reserved.
//
//  The PDF Reader Sample applications are licensed with a modified BSD license.
//  Please see License for details. This notice may not be removed from this file.
//

#import "PDFLinkViewController.h"

@interface PDFLinkViewController ()

@property (nonatomic,assign) IBOutlet UIView *contentView;

@property (nonatomic,assign) IBOutlet UIButton *websiteButton;
@property (nonatomic,assign) IBOutlet UIButton *pageButton;
@property (nonatomic,assign) IBOutlet UIButton *emailButton;
@property (nonatomic,assign) IBOutlet UILabel *websiteLabel;
@property (nonatomic,assign) IBOutlet UILabel *pageLabel;
@property (nonatomic,assign) IBOutlet UILabel *emailLabel;

@property (nonatomic,assign) IBOutlet UITextField *textField;

@end

@implementation PDFLinkViewController

#pragma mark - Init Methods

- (void)dealloc {
    Block_release(_callback);
    [_content release];
    [super dealloc];
}

#pragma mark - UIViewController Methods

- (void)viewDidLoad {
    [super viewDidLoad];
    
    // Do any additional setup after loading the view from its nib.
    self.contentView.layer.cornerRadius = 6.0;
    self.contentView.backgroundColor = [UIColor colorWithWhite:247.0/255.0 alpha:1.0];
    
    [self.textField setReturnKeyType:UIReturnKeyDone];
    self.textField.clearButtonMode = UITextFieldViewModeWhileEditing;
    self.textField.text = self.content;

    [self updataSubview];
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    
    [self.textField becomeFirstResponder];
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    
    [self.textField resignFirstResponder];
}

- (void)updataSubview {
    self.websiteButton.selected =
    self.pageButton.selected =
    self.emailButton.selected = NO;
    self.websiteLabel.textColor =
    self.pageLabel.textColor =
    self.emailLabel.textColor = [UIColor colorWithRed:118.0/255 green:118.0/255 blue:118.0/255 alpha:1.0];
    
    if (self.type == 0) {
        // Website
        self.websiteButton.selected = YES;
        self.websiteLabel.textColor = [UIColor colorWithRed:9.0/255 green:147.0/255 blue:225.0/255 alpha:1.0];
        
        [self.textField setKeyboardType:UIKeyboardTypeURL];
        self.textField.placeholder = [NSString stringWithFormat:@"https://www.google.com"];

    } else if (self.type == 1) {
        
        // Page Number
        self.pageButton.selected = YES;
        self.pageLabel.textColor = [UIColor colorWithRed:9.0/255 green:147.0/255 blue:225.0/255 alpha:1.0];
        
        [self.textField setKeyboardType:UIKeyboardTypeNumberPad];
        self.textField.placeholder = @"";
        
    } else {
        // Email
        self.emailButton.selected = YES;
        self.emailLabel.textColor = [UIColor colorWithRed:9.0/255 green:147.0/255 blue:225.0/255 alpha:1.0];
        
        [self.textField setKeyboardType:UIKeyboardTypeEmailAddress];
        self.textField.placeholder = @"example@email.com";
    }
}

#pragma mark - Button Actions

- (IBAction)buttonItemClicked_Switch:(id)sender {
    self.type = [sender tag];
    [self updataSubview];
}

- (IBAction)buttonItemClicked_Cancel:(id)sender {
    [self dismissViewControllerAnimated:YES completion:^{
        if (self.callback) {
            self.callback(nil, self.type);
            self.callback = nil;
        }
    }];
}

- (IBAction)buttonItemClicked_Done:(id)sender {
    [self dismissViewControllerAnimated:YES completion:^{
        NSString *text = self.textField.text.length > 0 ? self.textField.text: nil;
        self.content = text;
        if (self.callback) {
            self.callback(text, self.type);
            self.callback = nil;
        }
    }];
}

@end