#import "CreateResourceSheetController.h"
#import "ResourceDataSource.h"
#import "ResourceDocument.h"
#import "Resource.h"

@implementation CreateResourceSheetController

/*!
@method			controlTextDidChange:
@abstract		Handles updating of the 'Create' button when valid values are present in the sheet's fields.
@change			2003-08-01 UK:  Changed to use data source's resourceOfType instead of directly messing with the resource list's enumerator.
@change			2003-08-01 UK:  Removed ID > 0 check -- negative IDs are allowed as well.<br/><small>Note from Nick: IIRC this was there as a workaround for another bug which prohibited negative IDs from being used. Not sure if that got fixed though :)</small>
@description	Someone changed the control ID edit field. Check whether this is a unique ID and appropriately enable the "create" button.</p><p>Check "notification" against being nil, which is how we call it when we need to explicitly update the enabled state of the "create" button.
*/

- (void)controlTextDidChange:(NSNotification *)notification
{
	BOOL		enableButton = NO;
	NSString	*type = [typeView stringValue];
	NSNumber	*resID = [NSNumber numberWithInt:[resIDView intValue]];
	
	if([type length] == 4)
	{
		// I could use +[Resource getResourceOfType:andID:inDocument:] != nil, but that would be much slower
		Resource *resource = [[document dataSource] resourceOfType:type andID:resID];
		if(resource == nil)   // No resource with that type and ID yet?
			enableButton = YES;
	}
	[createButton setEnabled:enableButton];
}

/*!
@method		showCreateResourceSheet:
@abstract   Shows the sheet allowing the user to define the properties of a new resource.
@change		2003-08-01 UK:  Made it "fake" a popup selection so type field and popup match.
@change		2003-08-01 UK:  Made it suggest an unused resource ID.
*/

- (void)showCreateResourceSheet:(ResourceDocument *)sheetDoc
{
	// bug: didEndSelector could be better employed than using the button's targets from interface builder
	document = sheetDoc;
	[NSApp beginSheet:[self window] modalForWindow:[document mainWindow] modalDelegate:self didEndSelector:NULL contextInfo:nil];
	[resIDView setObjectValue:[[document dataSource] uniqueIDForType:[typeView stringValue]]];
	
	// put current popup value in text field and updates state of "create" button.
	[self typePopupSelection:typePopup];
}

- (IBAction)hideCreateResourceSheet:(id)sender
{
	if(sender == createButton)
	{
		// bug should be using cell's tag rather than position (so cells can be moved around if needed)
		// attributes ^= [[attributesMatrix cellAtRow:0 column:0] intValue]? [[attributesMatrix cellAtRow:0 column:0] tag]:0;
		
		unsigned short attributes = 0;
		attributes ^= [[attributesMatrix cellAtRow:0 column:0] intValue]? resPreload:0;
		attributes ^= [[attributesMatrix cellAtRow:1 column:0] intValue]? resPurgeable:0;
		attributes ^= [[attributesMatrix cellAtRow:2 column:0] intValue]? resLocked:0;
		attributes ^= [[attributesMatrix cellAtRow:0 column:1] intValue]? resSysHeap:0;
		attributes ^= [[attributesMatrix cellAtRow:1 column:1] intValue]? resProtected:0;
		
		Resource *resource = [Resource resourceOfType:[typeView stringValue] andID:[NSNumber numberWithShort:(short) [resIDView intValue]] withName:[nameView stringValue] andAttributes:[NSNumber numberWithUnsignedShort:attributes]];
		[resource setDocumentName:[document displayName]];
		[[document undoManager] beginUndoGrouping];
		[[document dataSource] addResource:resource];
		if([[nameView stringValue] length] == 0)
			[[document undoManager] setActionName:NSLocalizedString(@"Create Resource", nil)];
		else [[document undoManager] setActionName:[NSString stringWithFormat:NSLocalizedString(@"Create Resource '%@'", nil), [nameView stringValue]]];
		[[document undoManager] endUndoGrouping];
	}
	[[self window] orderOut:nil];
	[NSApp endSheet:[self window]];
}

/*!
@method		typePopupSelection:
@abstract   Updates the edit text field when the type pop-up selection is changed.
@change		2003-08-01 UK:  Commented, made it update state of "create" button.
*/

- (IBAction)typePopupSelection:(id)sender
{
	[typeView setStringValue:[typePopup titleOfSelectedItem]];
	[typeView selectText:sender];
	[self controlTextDidChange: nil];   // Make sure "create" button is updated.
}

@end