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/*
Grr RSS Reader
Copyright (C) 2006, 2007 Guenther Noack <guenther@unix-ag.uni-kl.de>
Copyright (C) 2009-2012 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 "SubscriptionPanel.h"
#import "Database.h"
#ifdef __APPLE__
#import "GNUstep.h"
#endif
@implementation SubscriptionPanel
// -----------------------------------------------------
// initialisation
// -----------------------------------------------------
+(id) shared
{
static SubscriptionPanel* controller = nil;
if (controller == nil)
{
ASSIGN(controller, [SubscriptionPanel new]);
}
return controller;
}
-(id) init
{
if ((self = [super init]) != nil)
{
BOOL nibLoaded;
nibLoaded = [NSBundle loadNibNamed:@"SubscriptionPanel" owner:self];
if (nibLoaded == NO)
{
NSLog(@"SubscriptionPanel: Failed to load nib.");
return nil;
}
}
return self;
}
-(void) dealloc
{
DESTROY(panel);
DESTROY(referenceElement);
[super dealloc];
}
// ------------------------------------------------------------
// SubscriptionPanel protocol (see FeedOperations component)
// ------------------------------------------------------------
-(void) show
{
[panel makeKeyAndOrderFront: self];
}
-(void) setReferenceElement: (id<DatabaseElement>) anElement
{
ASSIGN(referenceElement, anElement);
}
// ------------------------------------------------------------
// helper methods
// ------------------------------------------------------------
-(BOOL) subscribeToURL: (NSURL*) url
{
BOOL result = NO;
NSParameterAssert([url isKindOfClass: [NSURL class]]);
if (referenceElement != nil) {
if ([referenceElement conformsToProtocol: @protocol(Category)]) {
result = [[Database shared] subscribeToURL: url
inCategory: (id<Category>)referenceElement];
} else {
NSUInteger index = 0;
id<Category> category;
NSAssert1(
[referenceElement conformsToProtocol: @protocol(DatabaseElement)],
@"The reference element %@ is not a DatabaseElement.", referenceElement
);
// The category to put the subscription into is the super category of the
// reference element, the index is one below the reference element.
category = [referenceElement superElement];
if (category != nil) {
index = [[category elements] indexOfObject: referenceElement] + 1;
} else {
// The ref elements category was nil, so it's a top level element in the database.
index = [[[Database shared] topLevelElements] indexOfObject: referenceElement];
NSAssert(index != NSNotFound, @"The reference element points to a bad super element!");
index ++;
}
result = [[Database shared] subscribeToURL: url
inCategory: category
position: index];
}
} else {
result = [[Database shared] subscribeToURL: url];
}
return result;
}
// ------------------------------------------------------------
// GUI actions
// ------------------------------------------------------------
-(IBAction) subscribe: (id)sender
{
NSURL* URL = [NSURL URLWithString: [urlField stringValue]];
NSLog(@"URL: %@", [urlField stringValue]);
if (URL == nil) {
NSRunAlertPanel(
NSLocalizedString(@"Subscription failed", @"title of an alert dialog"),
NSLocalizedString(
@"The string you provided is not in URL format.",
@"failure reason in alert dialog"
),
_(@"Ok"), nil, nil
);
} else {
// URL is valid.
if ([self subscribeToURL: URL]) {
// success
[panel close];
} else {
// could not subscribe
NSRunAlertPanel(
NSLocalizedString(@"Subscription failed", @"alert message title"),
NSLocalizedString(
@"Your subscription failed. Possible reasons include:\n"
@"\t- There's not a RSS or Atom document stored at this URL\n"
@"\t- Incorrect Web Proxy settings\n",
@"failure reason in alert dialog"
),
_(@"Ok"), nil, nil
);
}
}
}
@end
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