PshComboBoxCell.m

/**
 * Copyright (c) 2003-2018, Carsten Blüm <carsten@bluem.net>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice, this
 *   list of conditions and the following disclaimer in the documentation and/or
 *   other materials provided with the distribution.
 * - Neither the name of Carsten Blüm nor the names of his contributors may be
 *   used to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#import "PshComboBoxCell.h"

@implementation PshComboBoxCell

- (NSString *)completedString:(NSString *)substring {

    NSString *completed = [super completedString:substring];

    if (nil != completed) {
        // Base class found a case-sensitive match from the beginning
        return completed;
    }

    unsigned i;
    NSUInteger count = [[self objectValues] count];
    NSUInteger substrlen = [substring length];

    for (i = 0; i < count; i ++) {
        NSString *completionCandidate = [[self objectValues] objectAtIndex:i];
        NSRange range = [completionCandidate length] > substrlen ? NSMakeRange(0, substrlen) : NSMakeRange(0, [completionCandidate length]);

        if (NSNotFound == [completionCandidate rangeOfString:substring options:NSCaseInsensitiveSearch range:range].location) {
            // String from completion list does not start with the substring
            continue;
        }
        return completionCandidate;
    }

    return nil;
}

@end