Sources/MyDocument.m

   1 //
   2 //  MyDocument.m
   3 //  LeanCalc
   4 //
   5 //  Created by Marc Liyanage on 31.01.05.
   6 //  Copyright __MyCompanyName__ 2005 . All rights reserved.
   7 //
   8
   9
  10 /* todo
  11
  12 - num lock / esc clear expression
  13
  14 */
  15
  16
  17
  18 #import "MyDocument.h"
  19
  20 @implementation MyDocument
  21
  22 - (id)init {
  23     self = [super init];
  24     if (!self) return nil;
  25         calculations = [[NSMutableArray alloc] init];
  26         return self;
  27 }
  28
  29
  30 - (void)dealloc {
  31         [calculations release];
  32         [super dealloc];
  33 }
  34
  35
  36 - (void)awakeFromNib {
  37
  38         if (![self fileName]) {
  39                 [arrayController add:self];
  40         }
  41
  42         [arrayController setSelectionIndex:[calculations count] - 1];
  43
  44 }
  45
  46
  47
  48 - (IBAction)commit:(id)sender {
  49
  50         if (![[sender stringValue] length]) return;
  51
  52         if (![self lastItemIsSelected] && [[calculations lastObject] expressionIsEmpty]) {
  53                 [arrayController setSelectedObjects:[NSArray arrayWithObject:[calculations lastObject]]];
  54                 return;
  55         }
  56         [self addItem];
  57 }
  58
  59
  60
  61 - (BOOL)lastItemIsSelected {
  62
  63         id lastObject = [calculations lastObject];
  64         id selectedObject = [[arrayController selectedObjects] objectAtIndex:0];
  65
  66         return selectedObject == lastObject;
  67 }
  68
  69
  70 - (void)addItem {
  71
  72         Calculation *newcalc = [[[Calculation alloc] init] autorelease];
  73         [arrayController addObject:newcalc];
  74         int count = [calculations count];
  75         id secondtolast = [calculations objectAtIndex:count - 2];
  76         [secondtolast setValue:newcalc forKey:@"next"];
  77
  78 }
  79
  80
  81 - (void)insertPrevious:(NSNumber *)sender {
  82
  83         int index = [sender intValue];
  84         if ([calculations count] <= index) return;
  85
  86         NSString *value = [[calculations objectAtIndex:[calculations count] - index - 1] valueForKey:@"result"];
  87         [[expressionField currentEditor] insertText:value];
  88 }
  89
  90
  91 - (NSArray *)control:(NSControl *)control textView:(NSTextView *)textView completions:(NSArray *)words forPartialWordRange:(NSRange)charRange indexOfSelectedItem:(int *)index {
  92
  93         NSString *partialWord = [[textView string] substringWithRange:charRange];
  94         NSArray *completions = [[[NSApplication sharedApplication] delegate] completionsForPartialWord:partialWord];
  95
  96         return completions;
  97 }
  98
  99
 100
 101 - (NSString *)windowNibName {
 102     return @"MyDocument";
 103 }
 104
 105
 106 - (void)windowControllerDidLoadNib:(NSWindowController *)aController {
 107         NSWindow *win = [aController window];
 108         [win performSelector:@selector(makeFirstResponder:) withObject:expressionField afterDelay:0.0];
 109     [super windowControllerDidLoadNib:aController];
 110 }
 111
 112
 113 - (NSData *)dataRepresentationOfType:(NSString *)aType {
 114         NSMutableData *data = [[[NSMutableData alloc] init] autorelease];
 115         NSKeyedArchiver *archiver = [[[NSKeyedArchiver alloc] initForWritingWithMutableData:data] autorelease];
 116         [archiver setOutputFormat:NSPropertyListXMLFormat_v1_0];
 117         [archiver encodeObject:calculations forKey:@"calculations"];
 118         [archiver finishEncoding];
 119         return data;
 120 }
 121
 122
 123 - (BOOL)loadDataRepresentation:(NSData *)data ofType:(NSString *)aType {
 124         NSKeyedUnarchiver *unarchiver = [[[NSKeyedUnarchiver alloc] initForReadingWithData:data] autorelease];
 125         [self setValue:[unarchiver decodeObjectForKey:@"calculations"] forKey:@"calculations"];
 126         [unarchiver finishDecoding];
 127     return YES;
 128 }
 129
 130 @end