5 // Created by Marc Liyanage on 31.01.05.
6 // Copyright __MyCompanyName__ 2005 . All rights reserved.
12 - num lock / esc clear expression
18 #import "MyDocument.h"
20 @implementation MyDocument
24 if (!self) return nil;
25 calculations = [[NSMutableArray alloc] init];
31 [calculations release];
36 - (void)awakeFromNib {
38 if (![self fileName]) {
39 [arrayController add:self];
42 [arrayController setSelectionIndex:[calculations count] - 1];
46 - (IBAction)commit:(id)sender {
48 if (![[sender stringValue] length]) return;
50 if (![self lastItemIsSelected] && [[calculations lastObject] expressionIsEmpty]) {
51 [arrayController setSelectedObjects:[NSArray arrayWithObject:[calculations lastObject]]];
59 - (BOOL)lastItemIsSelected {
61 id lastObject = [calculations lastObject];
62 id selectedObject = [[arrayController selectedObjects] objectAtIndex:0];
64 return selectedObject == lastObject;
70 Calculation *newcalc = [[[Calculation alloc] init] autorelease];
71 [arrayController addObject:newcalc];
72 int count = [calculations count];
73 id secondtolast = [calculations objectAtIndex:count - 2];
74 [secondtolast setValue:newcalc forKey:@"next"];
79 - (void)insertPrevious:(NSNumber *)sender {
81 int index = [sender intValue];
82 if ([calculations count] <= index) return;
84 NSString *value = [[calculations objectAtIndex:[calculations count] - index - 1] valueForKey:@"result"];
85 [[expressionField currentEditor] insertText:value];
89 - (NSArray *)control:(NSControl *)control textView:(NSTextView *)textView completions:(NSArray *)words forPartialWordRange:(NSRange)charRange indexOfSelectedItem:(int *)index {
91 NSString *partialWord = [[textView string] substringWithRange:charRange];
92 NSArray *completions = [[[NSApplication sharedApplication] delegate] completionsForPartialWord:partialWord];
99 - (NSString *)windowNibName {
100 return @"MyDocument";
104 - (void)windowControllerDidLoadNib:(NSWindowController *) aController {
105 [super windowControllerDidLoadNib:aController];
109 - (NSData *)dataRepresentationOfType:(NSString *)aType {
110 NSMutableData *data = [[[NSMutableData alloc] init] autorelease];
111 NSKeyedArchiver *archiver = [[[NSKeyedArchiver alloc] initForWritingWithMutableData:data] autorelease];
112 [archiver setOutputFormat:NSPropertyListXMLFormat_v1_0];
113 [archiver encodeObject:calculations forKey:@"calculations"];
114 [archiver finishEncoding];
119 - (BOOL)loadDataRepresentation:(NSData *)data ofType:(NSString *)aType {
120 NSKeyedUnarchiver *unarchiver = [[[NSKeyedUnarchiver alloc] initForReadingWithData:data] autorelease];
121 [self setValue:[unarchiver decodeObjectForKey:@"calculations"] forKey:@"calculations"];
122 [unarchiver finishDecoding];