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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 <AppKit/AppKit.h>
#import "AppController.h"
#import "Components.h"
#import "Database.h"
#import "ToolbarDelegate.h"
#import "ArticleFactory.h"
#import "PreferencesPanel.h"
#import "NSBundle+Extensions.h"
#ifdef __APPLE__
#import "GNUstep.h"
#endif
@interface AppController (Private)
-(void)loadViewProvidingComponent: (id<ViewProvidingComponent>) aComponent overriddenView: (NSView**) overriddenView;
-(BOOL) loadToolbarProvidingComponent: (id<ToolbarDelegate>) aComponent;
-(NSArray*) askToolbarProvidersForArrayUsingSelector: (SEL) aSelector
toolbar: (NSToolbar*) toolbar
optionalMethod: (BOOL) optionalMethod;
@end
@implementation AppController (Private)
/**
* Loads a view providing component into the place of an existing view object.
* Please not that the overriddenView parameter is _a_pointer_ to the reference
* to the overridden view! The new view will also be retained!
*/
-(void)loadViewProvidingComponent: (id<ViewProvidingComponent>) aComponent overriddenView: (NSView**) overriddenView
{
NSView* newView;
id<ViewProvidingComponent, NSObject> component = (id<ViewProvidingComponent, NSObject>) aComponent;
NSAssert1(
[component conformsToProtocol: @protocol(ViewProvidingComponent)],
@"Grr component %@ provides no view. So it cannot be used as such.", component
);
NSLog(@"Module %@ is being loaded.", component);
newView = [component view];
NSAssert1(newView != nil, @"Component %@ had no view, although it should.", component);
[newView setFrame: [*overriddenView frame]];
[[*overriddenView superview] replaceSubview: *overriddenView with: newView];
ASSIGN(*overriddenView, newView);
}
/**
* Loads a component that acts as a toolbar delegate.
* Returns YES on success, NO on failure.
*/
-(BOOL) loadToolbarProvidingComponent: (id<ToolbarDelegate>) aComponent
{
if ([aComponent conformsToProtocol: @protocol(ToolbarDelegate)] == NO) {
NSLog(@"Tried to add component not conforming to the ToolbarDelegate protocol: @%", [aComponent class]);
return NO;
}
[toolbarProviders addObject: aComponent];
return YES;
}
/*
* Helper method that sends a message with the given selector to each
* registered toolbar provider and concatenates the results of these
* method calls. The methods belonging to the selector must return
* a result of the NSArray* type.
*
* If the implementation of the method is optional for the toolbar
* provider, the optionalMethod flag can be set to YES to let this
* method check if the method is implemented by the toolbar providers
* before sending the message to them.
*/
- (NSArray*) askToolbarProvidersForArrayUsingSelector: (SEL) aSelector
toolbar: (NSToolbar*) toolbar
optionalMethod: (BOOL) optionalMethod
{
NSMutableArray* mutArray = [NSMutableArray new];
int i;
for (i=0; i<[toolbarProviders count]; i++) {
id<ToolbarDelegate> provider = [toolbarProviders objectAtIndex: i];
BOOL executionPossible = NO;
if (optionalMethod == NO) {
executionPossible = YES;
} else {
if ([provider respondsToSelector: aSelector]) {
executionPossible = YES;
}
}
if (executionPossible == YES) {
[mutArray addObjectsFromArray: [provider performSelector: aSelector
withObject: toolbar]];
}
}
return [NSArray arrayWithArray: mutArray];
}
@end
@implementation AppController
-(void) awakeFromNib
{
// Retain some views
[articleSetView retain];
[articleView retain];
[databaseView retain];
// toolbar is created in applicationDidFinishLaunching
// Make sure the toolbar provider array is initialized
ASSIGN(toolbarProviders, [NSMutableArray new]);
}
// ------------------------------------------------
// Application notifications
// ------------------------------------------------
// Macros for setting font names and sizes in defaults without overwriting
// existing values
// obj is a NSFont object, key is a NSString
#define SET_FAMILY( obj, key ) \
if ([defaults objectForKey: (key)] == nil) { \
[defaults setObject: [(obj) fontName] forKey: (key)]; \
}
// obj is a float, key is a NSString
#define SET_SIZE( obj, key ) \
if ([defaults objectForKey: (key)] == nil) { \
[defaults setObject: [NSNumber numberWithFloat: (obj)] forKey: (key)]; \
}
-(void) applicationDidFinishLaunching: (NSNotification*) aNotification
{
id<OutputProvidingComponent> db;
id<ViewProvidingComponent,FilterComponent> plugin1;
id<ViewProvidingComponent,FilterComponent> plugin2;
id<ViewProvidingComponent,FilterComponent> feedPlugin;
id<ToolbarDelegate> articleOpsToolbar;
id<ToolbarDelegate> feedOpsToolbar;
id<ToolbarDelegate,FilterComponent> searchingComponent;
NSNotificationCenter* defaultCenter;
NSUserDefaults* defaults;
// First create a different RSSFactory and replace the current one with that.
[RSSFactory setFactory: [[[ArticleFactory alloc] init] autorelease]];
// Make sure the fonts are set.
defaults = [NSUserDefaults standardUserDefaults];
SET_FAMILY( [NSFont systemFontOfSize: [NSFont systemFontSize]], @"RSSReaderFeedListFontDefaults" );
SET_SIZE( [NSFont systemFontSize], @"RSSReaderFeedListSizeDefaults" );
SET_FAMILY( [NSFont systemFontOfSize: [NSFont systemFontSize]], @"RSSReaderArticleListFontDefaults" );
SET_SIZE( [NSFont systemFontSize], @"RSSReaderArticleListSizeDefaults" );
SET_FAMILY( [NSFont userFontOfSize: [NSFont systemFontSize]], @"RSSReaderArticleContentFontDefaults" );
SET_SIZE( [NSFont systemFontSize], @"RSSReaderArticleContentSizeDefaults" );
SET_FAMILY( [NSFont userFixedPitchFontOfSize: [NSFont systemFontSize]], @"RSSReaderFixedArticleContentFontDefaults" );
SET_SIZE( [NSFont systemFontSize], @"RSSReaderFixedArticleContentSizeDefaults" );
// Create different Grr components
db = [Database shared];
plugin1 = [NSBundle instanceForBundleWithName: @"ArticleTable"];
plugin2 = [NSBundle instanceForBundleWithName: @"ArticleView"];
feedPlugin = [NSBundle instanceForBundleWithName: @"DatabaseTreeView"];
articleOpsToolbar = [NSBundle instanceForBundleWithName: @"ArticleOperations"];
feedOpsToolbar = [NSBundle instanceForBundleWithName: @"DatabaseOperations"];
searchingComponent = [NSBundle instanceForBundleWithName: @"Searching"];
NSAssert(plugin1 != nil, @"Article Table plugin could not be loaded.");
NSAssert(plugin2 != nil, @"Article View plugin could not be loaded.");
NSAssert(feedPlugin != nil, @"Feed Table plugin could not be loaded.");
NSAssert(searchingComponent != nil, @"Searching plugin could not be loaded.");
// Connect the created components...
defaultCenter = [NSNotificationCenter defaultCenter];
[defaultCenter addObserver: searchingComponent
selector: @selector(componentDidUpdateSet:)
name: ComponentDidUpdateNotification
object: feedPlugin];
[defaultCenter addObserver: plugin1
selector: @selector(componentDidUpdateSet:)
name: ComponentDidUpdateNotification
object: searchingComponent];
[defaultCenter addObserver: plugin2
selector: @selector(componentDidUpdateSet:)
name: ComponentDidUpdateNotification
object: plugin1];
[defaultCenter addObserver: articleOpsToolbar
selector: @selector(componentDidUpdateSet:)
name: ComponentDidUpdateNotification
object: plugin1];
[defaultCenter addObserver: feedOpsToolbar
selector: @selector(componentDidUpdateSet:)
name: ComponentDidUpdateNotification
object: feedPlugin];
// Insert the created viewable components into the GUI
[self loadViewProvidingComponent: plugin1 overriddenView: &articleSetView];
[self loadViewProvidingComponent: plugin2 overriddenView: &articleView];
[self loadViewProvidingComponent: feedPlugin overriddenView: &databaseView];
[self loadToolbarProvidingComponent: feedOpsToolbar];
[self loadToolbarProvidingComponent: articleOpsToolbar];
[self loadToolbarProvidingComponent: searchingComponent];
[defaultCenter postNotificationName: ComponentDidUpdateNotification object: db];
// Create toolbar
fToolbar = [(NSToolbar*)[NSToolbar alloc] initWithIdentifier: @"main window toolbar"];
[fToolbar setDelegate: self];
[window setToolbar: fToolbar];
// Set the autosave name for the window to let the window
// appear in the same place next time, too. :)
[window setFrameAutosaveName: @"Grr main window"];
// Now that everything is loaded, we can show the window.
[window makeKeyAndOrderFront: self];
// Application startup is finished. See applicationDidBecomeActive: below.
applicationStartupFinished = YES;
}
- (void) applicationDidBecomeActive: (NSNotification*) aNotification
{
// Only order front if application startup is finished. If we didn't do this,
// the window would instantly be shown, as this method is called before it
// is supposed to be shown. (That is, when all the plugin bundles are loaded.)
if (applicationStartupFinished) {
[window makeKeyAndOrderFront: self];
}
}
- (NSApplicationTerminateReply) applicationShouldTerminate: (NSApplication*) application
{
if ([[Database shared] archive] == NO) {
NSLog(@"Database could not be saved to disk"); // FIXME: better error handling needed!
}
// toolbar must be removed before terminating, so that the window
// can still store its *real* location, not the location the GNUstep
// impl of NSToolbar messed up.
[fToolbar setVisible: NO];
return NSTerminateNow;
}
// ------------------------------------------------
// Opening files
// ------------------------------------------------
- (BOOL) application: (NSApplication *) application
openFile: (NSString *) fileName
{
NSURL* URL = [NSURL fileURLWithPath: fileName];
if (URL == nil) {
return NO;
}
return [[Database shared] subscribeToURL: URL];
}
// ------------------------------------------------
// Handlers for actions
// ------------------------------------------------
-(IBAction) openPreferencesPanel: (id)sender
{
[[PreferencesPanel shared] open];
}
// ------------------------------------------------
// Toolbar delegate
// ------------------------------------------------
// required method
- (NSToolbarItem*)toolbar: (NSToolbar*)toolbar
itemForItemIdentifier: (NSString*)itemIdentifier
willBeInsertedIntoToolbar: (BOOL)flag
{
NSToolbarItem* result = nil;
int i;
for (i=0; i<[toolbarProviders count] && result == nil; i++) {
id<ToolbarDelegate> provider = [toolbarProviders objectAtIndex: i];
result = [provider toolbar: toolbar
itemForItemIdentifier: itemIdentifier
willBeInsertedIntoToolbar: flag];
}
return result;
}
// required method
- (NSArray*) toolbarAllowedItemIdentifiers: (NSToolbar*)toolbar
{
return [self askToolbarProvidersForArrayUsingSelector: _cmd
toolbar: toolbar
optionalMethod: YES];
}
// required method
- (NSArray*) toolbarDefaultItemIdentifiers: (NSToolbar*)toolbar;
{
return [self askToolbarProvidersForArrayUsingSelector: _cmd
toolbar: toolbar
optionalMethod: YES];
}
// optional method
- (NSArray*) toolbarSelectableItemIdentifiers: (NSToolbar *)toolbar;
{
return [self askToolbarProvidersForArrayUsingSelector: _cmd
toolbar: toolbar
optionalMethod: YES];
}
@end
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