Synnefo » Pithos MacOS Client

//

//  PithosNode.m

//  pithos-macos

//

// Copyright 2011 GRNET S.A. All rights reserved.

//

// Redistribution and use in source and binary forms, with or

// without modification, are permitted provided that the following

// conditions are met:

// 

//   1. Redistributions of source code must retain the above

//      copyright notice, this list of conditions and the following

//      disclaimer.

// 

//   2. Redistributions in binary form must reproduce the above

//      copyright notice, this list of conditions and the following

//      disclaimer in the documentation and/or other materials

//      provided with the distribution.

// 

// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

// POSSIBILITY OF SUCH DAMAGE.

// 

// The views and conclusions contained in the software and

// documentation are those of the authors and should not be

// interpreted as representing official policies, either expressed

// or implied, of GRNET S.A.

#import "PithosNode.h"

#import "PithosNodeInfoController.h"

#import "ASIDownloadCache.h"

#import "ASIPithosRequest.h"

@implementation PithosNode

@synthesize forcedRefresh, parent, shared, sharingAccount, childrenUpdatedNotificationName, 

            inheritChildrenUpdatedNotificationName, displayName, isLeafItem, icon;

@dynamic url, children, pithos, pithosAccount, pithosContainer, pithosObject;

#pragma mark -

#pragma mark Object Lifecycle

- (id)init {

    if ((self = [super init])) {

        freshness = PithosNodeStateRefreshNeeded;

        forcedRefresh = NO;

        shared = NO;

        isLeafItem = NO;

        self.childrenUpdatedNotificationName = @"PithosNodeChildrenUpdated";

        inheritChildrenUpdatedNotificationName = NO;

    }

    return self;

}

- (void)dealloc {

    [pithosNodeInfoController release];

    [sharingAccount release];

    [icon release];

    [displayName release];

    [childrenUpdatedNotificationName release];

    [newChildren release];

    [children release];

    [url release];

    [super dealloc];

}

- (BOOL)isEqual:(id)anObject {

    return ([anObject isKindOfClass:[self class]] && [((PithosNode *)anObject).url isEqual:self.url]);

}

- (NSUInteger)hash {

    return self.url.hash;

}

#pragma mark -

#pragma mark Properties

- (void)setShared:(BOOL)aShared {

    if (shared != aShared) {

        shared = aShared;

        [url release];

        url = nil;

    }

}

- (void)setSharingAccount:(NSString *)aSharingAccount {

    if (![sharingAccount isEqualToString:aSharingAccount]) {

        [sharingAccount release];

        sharingAccount = [aSharingAccount retain];

        [url release];

        url = nil;

    }

}

#pragma mark -

#pragma mark Actions

- (void)invalidateChildren {

    if (freshness == PithosNodeStateFresh)

        freshness = PithosNodeStateRefreshNeeded;

}

- (void)invalidateChildrenRecursive {    

    if (freshness == PithosNodeStateFresh) {

        for (PithosNode *child in children) {

            [child invalidateChildrenRecursive];

        }

        freshness = PithosNodeStateRefreshNeeded;

    }

}

- (void)refresh {

    [self invalidateChildren];

    self.children;

}

- (void)forceRefresh {

    forcedRefresh = YES;

    [self refresh];

}

- (void)postChildrenUpdatedNotificationName {

    // Notify observers that children are updated

    if (inheritChildrenUpdatedNotificationName) {

        PithosNode *ancestor = self;

        while (ancestor && ancestor.parent) {

            ancestor = ancestor.parent;

        }

        if (ancestor && ancestor.childrenUpdatedNotificationName) {

            [[NSNotificationCenter defaultCenter] postNotificationName:ancestor.childrenUpdatedNotificationName object:self];

        }

    } else if (childrenUpdatedNotificationName) {

        [[NSNotificationCenter defaultCenter] postNotificationName:childrenUpdatedNotificationName object:self];

    }

}

- (void)showPithosNodeInfo:(id)sender {

    // Abstract method

}

- (void)pithosNodeInfoWillClose:(id)sender {

    if (pithosNodeInfoController) {

        [pithosNodeInfoController release];

        pithosNodeInfoController = nil;

    }

}

- (void)pithosNodeWillBeRemoved {

    if (pithosNodeInfoController) {

        pithosNodeInfoController.node = nil;

        [[pithosNodeInfoController window] close];

    }

    for (PithosNode *child in children) {

        [child pithosNodeWillBeRemoved];

    }

}

#pragma mark -

#pragma mark ASIHTTPRequestDelegate

- (void)performRequestFinishedDelegateInBackground:(ASIPithosRequest *)request {

    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{

        [self performSelector:NSSelectorFromString([request.userInfo objectForKey:@"didFinishSelector"]) withObject:request];

    });

}

- (void)performRequestFailedDelegateInBackground:(ASIPithosRequest *)request {

    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{

        [self performSelector:NSSelectorFromString([request.userInfo objectForKey:@"didFailSelector"]) withObject:request];

    });

}

@end