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/*
Grr RSS Reader
Copyright (C) 2006, 2007 Guenther Noack <guenther@unix-ag.uni-kl.de>
Copyright (C) 2009-2010 GNUstep Application Team
Riccardo Mottola
This application is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This application is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA.
*/
#import "Searching.h"
#import "NSSet+ArticleFiltering.h"
#ifdef __APPLE__
#import "GNUstep.h"
#endif
#define IDENTIFIER @"Search"
/* allowed and default item identifiers */
static NSArray* itemIdentifiers = nil;
@interface SearchingComponent (Private)
-(void)_setOutputSet: (NSSet*)newOutputSet;
@end
@implementation SearchingComponent
// ------------------------------------------------
// initialization
// ------------------------------------------------
- (id) init
{
if ((self = [super init]) != nil) {
toolbarItem = [[NSToolbarItem alloc] initWithItemIdentifier: IDENTIFIER];
searchField = [[NSSearchField alloc] initWithFrame: NSMakeRect(0, 0, 200, 22)];
[searchField setRecentsAutosaveName: @"recent article searches"];
[toolbarItem setView: searchField];
[toolbarItem setMinSize:NSMakeSize(42.0, 32.0)]; // set min and max size or the item won't appear on Cocoa
[toolbarItem setMaxSize:NSMakeSize(210.0, 32.0)]; // when a view is set in a toolbar item
[searchField setTarget: self];
[searchField setAction: @selector(searchAction:)];
[toolbarItem setLabel: NSLocalizedString(@"Search", @"search toolbar item label")];
if (itemIdentifiers == nil) {
itemIdentifiers = [[NSArray alloc] initWithObjects:
NSToolbarFlexibleSpaceItemIdentifier,
IDENTIFIER,
nil
];
}
}
return self;
}
// ------------------------------------------------
// toolbar delegate methods
// ------------------------------------------------
- (NSToolbarItem*)toolbar: (NSToolbar*)toolbar
itemForItemIdentifier: (NSString*)itemIdentifier
willBeInsertedIntoToolbar: (BOOL)flag
{
if ([itemIdentifier isEqualToString: IDENTIFIER]) {
return toolbarItem;
} else {
return nil;
}
}
- (NSArray*) toolbarAllowedItemIdentifiers: (NSToolbar*)toolbar
{
return itemIdentifiers;
}
- (NSArray*) toolbarDefaultItemIdentifiers: (NSToolbar*)toolbar
{
return itemIdentifiers;
}
// ------------------------------------------------
// actual searching
// ------------------------------------------------
-(void) searchAction: (id)sender
{
NSLog(@"search action");
ASSIGN(searchString, [searchField stringValue]);
[self _setOutputSet: [inputSet subsetFilteredForString: searchString]];
}
// ------------------------------------------------
// input accepting component protocol
// ------------------------------------------------
-(void)componentDidUpdateSet: (NSNotification*) aNotification
{
id<OutputProvidingComponent> component = [aNotification object];
NSSet* newInputSet = [component objectsForPipeType: [PipeType articleType]];
if ([newInputSet isSubsetOfSet: inputSet]) {
NSMutableSet* mutSet = [NSMutableSet setWithSet: newInputSet];
[mutSet intersectSet: outputSet];
[self _setOutputSet: mutSet];
} else {
[self _setOutputSet: [newInputSet subsetFilteredForString: searchString]];
}
ASSIGN(inputSet, newInputSet);
}
// ------------------------------------------------
// output stuff
// ------------------------------------------------
/**
* Call this to change the output set. This method also
* checks if the output set maybe didn't change and only
* sends the change notification if it did.
*/
-(void)_setOutputSet: (NSSet*)newOutputSet
{
// Note: For outputSet == nil, this evaluates to TRUE.
if ([outputSet isEqualToSet: newOutputSet] == NO) {
NSNotificationCenter* center;
ASSIGN(outputSet, newOutputSet);
center = [NSNotificationCenter defaultCenter];
[center postNotificationName: ComponentDidUpdateNotification
object: self];
}
}
-(NSSet*) objectsForPipeType: (id<PipeType>)aPipeType;
{
NSSet *retval;
NSAssert2(
aPipeType == [PipeType articleType],
@"%@ component does not support pipe type %@",
self, aPipeType
);
if (outputSet != nil) {
retval = [NSSet setWithSet: outputSet];
} else {
retval = [[NSSet new] autorelease];
}
return retval;
}
@end
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