| 1 | //
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| 2 | // NJRHistoryTrackingComboBox.m
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| 3 | // DockCam
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| 4 | //
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| 5 | // Created by Nicholas Riley on Fri Jun 28 2002.
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| 6 | // Copyright (c) 2002 Nicholas Riley. All rights reserved.
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| 7 | //
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| 8 |
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| 9 | #import "NJRHistoryTrackingComboBox.h"
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| 10 |
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| 11 | #define NJRHistoryTrackingComboBoxMaxItems 100
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| 12 |
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| 13 | @implementation NJRHistoryTrackingComboBox
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| 14 |
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| 15 | - (NSString *)_defaultKey;
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| 16 | {
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| 17 | NSAssert([self tag] != 0, NSLocalizedString(@"Can't track history for combo box with tag 0: please set a tag", "Assertion for history tracking combo box if tag is 0"));
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| 18 | return [NSString stringWithFormat: @"NJRHistoryTrackingComboBox tag %d", [self tag]];
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| 19 | }
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| 20 |
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| 21 | - (void)awakeFromNib;
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| 22 | {
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| 23 | [[NSNotificationCenter defaultCenter] addObserver: self
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| 24 | selector: @selector(textDidEndEditing:)
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| 25 | name: NSTextDidEndEditingNotification
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| 26 | object: self];
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| 27 | [self removeAllItems];
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| 28 | [self addItemsWithObjectValues: [[NSUserDefaults standardUserDefaults] stringArrayForKey: [self _defaultKey]]];
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| 29 | }
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| 30 |
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| 31 | - (void)_writeHistory;
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| 32 | {
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| 33 | NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
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| 34 | [defaults setObject: [self objectValues] forKey: [self _defaultKey]];
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| 35 | [defaults synchronize];
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| 36 | }
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| 37 |
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| 38 | - (void)_clearEntry;
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| 39 | {
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| 40 | [self setStringValue: @""];
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| 41 | // force bindings to update
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| 42 | [self textDidChange: [NSNotification notificationWithName: NSControlTextDidChangeNotification
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| 43 | object: [[self window] fieldEditor: NO forObject: self]]];
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| 44 | }
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| 45 |
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| 46 | - (IBAction)removeEntry:(id)sender;
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| 47 | {
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| 48 | int idx = [self indexOfSelectedItem];
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| 49 | if (idx == -1) {
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| 50 | [self selectItemWithObjectValue: [self stringValue]];
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| 51 | idx = [self indexOfSelectedItem];
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| 52 | }
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| 53 | if (idx != -1) [self removeItemAtIndex: idx];
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| 54 | [self _clearEntry];
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| 55 | [self _writeHistory];
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| 56 | }
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| 57 |
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| 58 | - (IBAction)clearAllEntries:(id)sender;
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| 59 | {
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| 60 | [self removeAllItems];
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| 61 | [self setStringValue: @""];
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| 62 | [self _clearEntry];
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| 63 | [self _writeHistory];
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| 64 | }
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| 65 |
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| 66 | - (BOOL)textShouldEndEditing:(NSText *)textObject;
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| 67 | {
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| 68 | NSString *newValue = [self stringValue];
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| 69 | int oldIndex = [self indexOfItemWithObjectValue: newValue];
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| 70 | if ([newValue length] == 0) return YES; // donÕt save empty entries
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| 71 | [self removeItemWithObjectValue: newValue];
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| 72 | [self insertItemWithObjectValue: newValue atIndex: 0];
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| 73 | if (oldIndex == NSNotFound) {
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| 74 | int numItems = [self numberOfItems];
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| 75 | while (numItems-- > NJRHistoryTrackingComboBoxMaxItems) {
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| 76 | [self removeItemAtIndex: numItems - 1];
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| 77 | }
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| 78 | }
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| 79 | [self _writeHistory];
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| 80 | return YES;
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| 81 | }
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| 82 |
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| 83 | @end |
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