project_files/HedgewarsMobile/Classes/EditableCellView.m
author nemo
Wed, 09 Aug 2017 12:46:52 -0400
changeset 12446 48ee3777e42e
parent 11549 893722a2a1f9
child 12872 00215a7ec5f5
permissions -rw-r--r--
trying to eliminate that annoying impact sound for gears that are well under the water and not even exiting it. sheepluva might want to look this over since this is modifying his code and should perhaps be part of the addSplashForGear checks, but hadn't had much luck getting him to examine it past year or so

/*
 * Hedgewars-iOS, a Hedgewars port for iOS devices
 * Copyright (c) 2009-2012 Vittorio Giovara <vittorio.giovara@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
 */


#import "EditableCellView.h"
#import "UITableViewCell+FindTable.h"

@implementation EditableCellView
@synthesize delegate, textField, titleLabel, minimumCharacters, maximumCharacters, respectEditing, oldValue;

-(id) initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
    if ((self = [super initWithStyle:style reuseIdentifier:reuseIdentifier])) {
        delegate = nil;

        textField = [[UITextField alloc] initWithFrame:CGRectZero];
        textField.backgroundColor = [UIColor clearColor];
        textField.delegate = self;
        textField.clearButtonMode = UITextFieldViewModeWhileEditing;
        textField.clearsOnBeginEditing = NO;
        textField.returnKeyType = UIReturnKeyDone;
        textField.adjustsFontSizeToFitWidth = YES;
        textField.minimumFontSize = 9;
        textField.userInteractionEnabled = YES;
        textField.font = [UIFont boldSystemFontOfSize:[UIFont labelFontSize]];
        [textField addTarget:self action:@selector(save:) forControlEvents:UIControlEventEditingDidEndOnExit];

        [self.contentView addSubview:textField];
        //[textField release];

        titleLabel = [[UILabel alloc] init];
        titleLabel.textAlignment = NSTextAlignmentLeft;
        titleLabel.backgroundColor = [UIColor clearColor];
        titleLabel.font = [UIFont boldSystemFontOfSize:[UIFont labelFontSize]];
        [self.contentView addSubview:titleLabel];
        //[titleLabel release];

        minimumCharacters = 1;
        maximumCharacters = 64;
        respectEditing = NO;
        oldValue = nil;
    }
    return self;
}

-(void) layoutSubviews {
    [super layoutSubviews];

    CGRect contentRect = self.contentView.bounds;
    CGFloat boundsX = contentRect.origin.x;

    int offset = 0;
    int skew = 0;
    if (self.imageView != nil)
        offset += self.imageView.frame.size.width;

    if ([self.titleLabel.text length] == 0)
        titleLabel.frame = CGRectZero;
    else {
        titleLabel.frame = CGRectMake(boundsX+offset+10, 10, 100, [UIFont labelFontSize] + 4);
        offset += 100;
        skew +=2;
    }

    textField.frame = CGRectMake(boundsX+offset+10, skew+10, 300, [UIFont labelFontSize] + 4);
}

-(void) setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];
    // Configure the view for the selected state
}

-(void) dealloc {
    self.delegate = nil;
    releaseAndNil(oldValue);
    releaseAndNil(titleLabel);
    releaseAndNil(textField);
    [super dealloc];
}

#pragma mark -
#pragma mark textField delegate
// limit the size of the field to 64 characters like in original frontend
-(BOOL) textField:(UITextField *)aTextField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
    return !([aTextField.text length] > self.maximumCharacters && [string length] > range.length);
}

// allow editing only if delegate is set and conformant to protocol, and if editableOnlyWhileEditing
-(BOOL) textFieldShouldBeginEditing:(UITextField *)aTextField {
    return (delegate != nil) &&
           [delegate respondsToSelector:@selector(saveTextFieldValue:withTag:)] &&
           (respectEditing) ? [self findTable].editing : YES;
}

// the textfield is being modified, update the navigation controller
-(void) textFieldDidBeginEditing:(UITextField *)aTextField{
    // don't interact with table below
    [self findTable].scrollEnabled = NO;

    self.oldValue = self.textField.text;

    UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Cancel",@"")
                                                                     style:UIBarButtonItemStylePlain
                                                                    target:self
                                                                    action:@selector(cancel:)];
    [(UITableViewController *)delegate navigationItem].leftBarButtonItem = cancelButton;
    [cancelButton release];

    UIBarButtonItem *saveButton = [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Save",@"")
                                                                     style:UIBarButtonItemStyleDone
                                                                    target:self
                                                                    action:@selector(save:)];
    [(UITableViewController *)delegate navigationItem].rightBarButtonItem = saveButton;
    [saveButton release];
}

/* with this a field might remain in editing status even if the view moved;
   use method below instead that allows some more interaction
// don't accept 0-length strings
-(BOOL) textFieldShouldEndEditing:(UITextField *)aTextField {
    return ([aTextField.text length] > 0);
}
*/

-(BOOL) textFieldShouldReturn:(UITextField *)aTextField {
    return ([aTextField.text length] >= self.minimumCharacters);
}

// the textfield has been modified, tell the delegate to do something
-(void) textFieldDidEndEditing:(UITextField *)aTextField {
    // this forces a save when user selects a new field
    if ([self.textField.text isEqualToString:self.oldValue] == NO)
        [self save:aTextField];

    // restores default behaviour on caller
    [self findTable].scrollEnabled = YES;
    [(UITableViewController *)delegate navigationItem].leftBarButtonItem = [(UITableViewController *)delegate navigationItem].backBarButtonItem;
    [(UITableViewController *)delegate navigationItem].rightBarButtonItem = nil;
}

#pragma mark -
#pragma mark instance methods
// the user wants to show the keyboard
-(void) replyKeyboard {
    [self.textField becomeFirstResponder];
}

// the user pressed cancel so hide keyboard
-(void) cancel:(id) sender {
    // reverts any changes and performs a fake save for removing the keyboard
    self.textField.text = self.oldValue;
    [self save:sender];
}

// send the value to the delegate (called before textFieldDidEndEditing)
-(void) save:(id) sender {
    if (delegate == nil || [delegate respondsToSelector:@selector(saveTextFieldValue:withTag:)] == NO)
        return;

    // don't save if the textfield is invalid
    if ([self textFieldShouldReturn:textField] == NO)
        return;

    [delegate saveTextFieldValue:self.textField.text withTag:self.tag];
    [self.textField resignFirstResponder];
    self.oldValue = nil;
}

// when field is editable only when the tableview is editable, resign responder when exiting editing mode
-(void) willTransitionToState:(UITableViewCellStateMask)state {
    if (respectEditing && state == UITableViewCellStateDefaultMask)
        [self save:nil];

    [super willTransitionToState:state];
}

@end