123 lines
2.5 KiB
Objective-C
123 lines
2.5 KiB
Objective-C
//
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// SpotlightTransformers.m
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// Cog
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//
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// Created by Matthew Grinshpun on 11/02/08.
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// Copyright 2008 Matthew Leon Grinshpun. All rights reserved.
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//
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#import "SpotlightTransformers.h"
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#import "SpotlightWindowController.h"
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// This is what we use instead of an outlet for PausingQueryTransformer
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static SpotlightWindowController *searchController;
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@implementation PausingQueryTransformer
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+ (Class)transformedValueClass {
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return [NSArray class];
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}
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+ (BOOL)allowsReverseTransformation {
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return NO;
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}
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+ (void)setSearchController:(SpotlightWindowController *)aSearchController {
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searchController = aSearchController;
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}
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- (id)transformedValue:(id)value {
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// Rather unintuitively, this piece of code eliminates the "flicker"
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// when searching for new results, which resulted from a pause when the
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// search query stops gathering and sends an empty results array through KVO.
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if(([value count] > 0) || ([searchController.query isGathering])) {
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self.oldResults = (NSArray *)value;
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}
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return self.oldResults;
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}
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- (void)dealloc {
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self.oldResults = nil;
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}
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@synthesize oldResults;
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@end
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@implementation AuthorToArtistTransformer
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+ (Class)transformedValueClass {
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return [NSString class];
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}
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+ (BOOL)allowsReverseTransformation {
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return NO;
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}
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- (id)transformedValue:(id)value {
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return [value objectAtIndex:0];
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}
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@end
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@implementation PathToURLTransformer
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+ (Class)transformedValueClass {
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return [NSURL class];
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}
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+ (BOOL)allowsReverseTransformation {
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return YES;
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}
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// Convert from path to NSURL
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- (id)transformedValue:(id)value {
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if(value == nil) return nil;
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return [NSURL fileURLWithPath:value];
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}
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// Convert from NSURL to path
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- (id)reverseTransformedValue:(id)value {
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if(value == nil) return nil;
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return [value path];
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}
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@end
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@implementation StringToSearchScopeTransformer
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+ (Class)transformedValueClass {
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return [NSArray class];
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}
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+ (BOOL)allowsReverseTransformation {
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return NO;
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}
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// Convert from URL string to Search Scope
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- (id)transformedValue:(id)value {
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if(value == nil) return nil;
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NSURL *scope = [NSURL URLWithString:value];
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return @[scope];
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}
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@end
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@implementation NumberToStringTransformer
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+ (Class)transformedValueClass {
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return [NSString class];
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}
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+ (BOOL)allowsReverseTransformation {
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return NO;
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}
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// Convert from NSNumber to NSString
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- (id)transformedValue:(id)value {
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if(value == nil) return nil;
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// If there's an NS/CFNumber hiding in here...
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if([value respondsToSelector:@selector(stringValue)]) {
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return [value stringValue];
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}
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return value;
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}
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@end
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