Use UICollectionView instead of AQGridView, on 6.0 and later

AspenProject/VLCPlaylistCollectionViewCell.h

+//
+//  VLCPlaylistCollectionViewCell.h
+//  VLC for iOS
+//
+//  Created by Tamas Timar on 8/30/13.
+//  Copyright (c) 2013 VideoLAN. All rights reserved.
+//
+//  Refer to the COPYING file of the official project for license.
+//
+
+#import <UIKit/UIKit.h>
+#import "VLCLinearProgressIndicator.h"
+
+@interface VLCPlaylistCollectionViewCell : UICollectionViewCell
+
+@property (nonatomic, strong) IBOutlet UILabel *titleLabel;
+@property (nonatomic, strong) IBOutlet UILabel *subtitleLabel;
+@property (nonatomic, strong) IBOutlet UIImageView *thumbnailView;
+@property (nonatomic, strong) IBOutlet VLCLinearProgressIndicator *progressView;
+@property (nonatomic, strong) IBOutlet UIButton *removeMediaButton;
+@property (nonatomic, strong) IBOutlet UIImageView *mediaIsUnreadView;
+@property (nonatomic, strong) IBOutlet UILabel *seriesNameLabel;
+@property (nonatomic, strong) IBOutlet UILabel *artistNameLabel;
+@property (nonatomic, strong) IBOutlet UILabel *albumNameLabel;
+
+@property (nonatomic, retain) MLFile *mediaObject;
+
+@property (nonatomic, weak) UICollectionView *collectionView;
+
+- (void)setEditing:(BOOL)editing animated:(BOOL)animated;
+- (IBAction)removeMedia:(id)sender;
+
+@end

AspenProject/VLCPlaylistCollectionViewCell.m

+//
+//  VLCPlaylistCollectionViewCell.m
+//  VLC for iOS
+//
+//  Created by Tamas Timar on 8/30/13.
+//  Copyright (c) 2013 VideoLAN. All rights reserved.
+//
+//  Refer to the COPYING file of the official project for license.
+//
+
+#import "VLCPlaylistCollectionViewCell.h"
+
+#import "VLCPlaylistViewController.h"
+
+#define MAX_CACHE_SIZE 27 // three times the number of items shown on iPad
+
+@implementation VLCPlaylistCollectionViewCell
+
+- (void)setEditing:(BOOL)editing animated:(BOOL)animated
+{
+    self.removeMediaButton.hidden = !editing;
+    [self _updatedDisplayedInformationForKeyPath:@"editing"];
+}
+
+- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
+{
+    [self _updatedDisplayedInformationForKeyPath:keyPath];
+}
+
+- (void)setMediaObject:(MLFile *)mediaObject
+{
+    if (_mediaObject != mediaObject) {
+        [_mediaObject removeObserver:self forKeyPath:@"computedThumbnail"];
+        [_mediaObject removeObserver:self forKeyPath:@"lastPosition"];
+        [_mediaObject removeObserver:self forKeyPath:@"duration"];
+        [_mediaObject removeObserver:self forKeyPath:@"fileSizeInBytes"];
+        [_mediaObject removeObserver:self forKeyPath:@"title"];
+        [_mediaObject removeObserver:self forKeyPath:@"thumbnailTimeouted"];
+        [_mediaObject removeObserver:self forKeyPath:@"unread"];
+        [_mediaObject removeObserver:self forKeyPath:@"albumTrackNumber"];
+        [_mediaObject removeObserver:self forKeyPath:@"album"];
+        [_mediaObject removeObserver:self forKeyPath:@"artist"];
+        [_mediaObject removeObserver:self forKeyPath:@"genre"];
+        if ([_mediaObject respondsToSelector:@selector(didHide)])
+            [(MLFile*)_mediaObject didHide];
+
+        _mediaObject = mediaObject;
+
+        [_mediaObject addObserver:self forKeyPath:@"computedThumbnail" options:0 context:nil];
+        [_mediaObject addObserver:self forKeyPath:@"lastPosition" options:0 context:nil];
+        [_mediaObject addObserver:self forKeyPath:@"duration" options:0 context:nil];
+        [_mediaObject addObserver:self forKeyPath:@"fileSizeInBytes" options:0 context:nil];
+        [_mediaObject addObserver:self forKeyPath:@"title" options:0 context:nil];
+        [_mediaObject addObserver:self forKeyPath:@"thumbnailTimeouted" options:0 context:nil];
+        [_mediaObject addObserver:self forKeyPath:@"unread" options:0 context:nil];
+        [_mediaObject addObserver:self forKeyPath:@"albumTrackNumber" options:0 context:nil];
+        [_mediaObject addObserver:self forKeyPath:@"album" options:0 context:nil];
+        [_mediaObject addObserver:self forKeyPath:@"artist" options:0 context:nil];
+        [_mediaObject addObserver:self forKeyPath:@"genre" options:0 context:nil];
+
+        if ([_mediaObject respondsToSelector:@selector(willDisplay)])
+            [(MLFile*)_mediaObject willDisplay];
+    }
+
+    [self _updatedDisplayedInformationForKeyPath:nil];
+}
+
+- (void)_updatedDisplayedInformationForKeyPath:(NSString *)keyPath
+{
+    self.albumNameLabel.text = self.artistNameLabel.text = self.seriesNameLabel.text = @"";
+
+    if ([self.mediaObject isKindOfClass:[MLFile class]]) {
+        MLFile *mediaObject = self.mediaObject;
+        [self configureForMLFile:mediaObject];
+
+        if (([keyPath isEqualToString:@"computedThumbnail"] || !keyPath) && !mediaObject.isAlbumTrack) {
+            self.thumbnailView.image = [self thumbnailForMediaFile:mediaObject];
+        }
+    } else if ([self.mediaObject isKindOfClass:[MLAlbum class]]) {
+        MLAlbum *mediaObject = (MLAlbum *)self.mediaObject;
+        [self configureForAlbum:mediaObject];
+
+    } else if ([self.mediaObject isKindOfClass:[MLAlbumTrack class]]) {
+        MLAlbumTrack *mediaObject = (MLAlbumTrack *)self.mediaObject;
+        [self configureForAlbumTrack:mediaObject];
+
+    } else if ([self.mediaObject isKindOfClass:[MLShow class]]) {
+        MLShow *mediaObject = (MLShow *)self.mediaObject;
+        [self configureForShow:mediaObject];
+
+        if ([keyPath isEqualToString:@"computedThumbnail"] || !keyPath) {
+            MLFile *anyFileFromAnyEpisode = [mediaObject.episodes.anyObject files].anyObject;
+            self.thumbnailView.image = [self thumbnailForMediaFile:anyFileFromAnyEpisode];
+        }
+    } else if ([self.mediaObject isKindOfClass:[MLShowEpisode class]]) {
+        MLShowEpisode *mediaObject = (MLShowEpisode *)self.mediaObject;
+        [self configureForShowEpisode:mediaObject];
+
+        if ([keyPath isEqualToString:@"computedThumbnail"] || !keyPath) {
+            MLFile *anyFileFromEpisode = mediaObject.files.anyObject;
+            self.thumbnailView.image = [self thumbnailForMediaFile:anyFileFromEpisode];
+        }
+    }
+
+    [self setNeedsDisplay];
+}
+
+- (IBAction)removeMedia:(id)sender
+{
+    /* ask user if s/he really wants to delete the media file */
+    UIAlertView * alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"DELETE_FILE", @"") message:[NSString stringWithFormat:NSLocalizedString(@"DELETE_FILE_LONG", @""), self.mediaObject.title] delegate:self cancelButtonTitle:NSLocalizedString(@"BUTTON_CANCEL", @"") otherButtonTitles:NSLocalizedString(@"BUTTON_DELETE", @""), nil];
+    [alert show];
+}
+
+- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
+{
+    if (buttonIndex == 1) {
+        VLCPlaylistViewController *delegate = (VLCPlaylistViewController*)self.collectionView.delegate;
+        [delegate removeMediaObject:self.mediaObject];
+    }
+}
+
+#pragma mark - presentation
+
+- (void)configureForShow:(MLShow *)show
+{
+    self.titleLabel.text = show.name;
+    self.artistNameLabel.text = @"";
+    self.albumNameLabel.text = show.releaseYear;
+    NSUInteger count = show.episodes.count;
+    self.subtitleLabel.text = [NSString stringWithFormat:(count > 1) ? NSLocalizedString(@"LIBRARY_EPISODES", @"") : NSLocalizedString(@"LIBRARY_SINGLE_EPISODE", @""), count, show.unreadEpisodes.count];
+    self.mediaIsUnreadView.hidden = YES;
+    self.progressView.hidden = YES;
+}
+
+- (void)configureForAlbumTrack:(MLAlbumTrack *)albumTrack
+{
+    self.artistNameLabel.text = albumTrack.artist;
+    self.albumNameLabel.text = [NSString stringWithFormat:NSLocalizedString(@"LIBRARY_SINGLE_TRACK", @""), albumTrack.trackNumber.intValue];
+    self.titleLabel.text = albumTrack.title;
+    self.thumbnailView.image = nil;
+
+    MLFile *anyFileFromTrack = albumTrack.files.anyObject;
+    self.subtitleLabel.text = [NSString stringWithFormat:@"%@", [VLCTime timeWithNumber:[anyFileFromTrack duration]]];
+
+    CGFloat position = anyFileFromTrack.lastPosition.floatValue;
+    self.progressView.progress = position;
+    self.progressView.hidden = ((position < .1f) || (position > .95f)) ? YES : NO;
+    [self.progressView setNeedsDisplay];
+    self.mediaIsUnreadView.hidden = !anyFileFromTrack.unread.intValue;
+}
+
+- (void)configureForAlbum:(MLAlbum *)album
+{
+    self.titleLabel.text = album.name;
+    MLAlbumTrack *anyTrack = [album.tracks anyObject];
+    self.artistNameLabel.text = anyTrack? anyTrack.artist: @"";
+    self.albumNameLabel.text = album.releaseYear;
+    self.thumbnailView.image = nil;
+
+    NSUInteger count = album.tracks.count;
+    self.subtitleLabel.text = [NSString stringWithFormat:(count > 1) ? NSLocalizedString(@"LIBRARY_TRACKS", @"") : NSLocalizedString(@"LIBRARY_SINGLE_TRACK", @""), count];
+    self.mediaIsUnreadView.hidden = YES;
+    self.progressView.hidden = YES;
+}
+
+- (void)configureForShowEpisode:(MLShowEpisode *)showEpisode
+{
+    MLFile *anyFileFromEpisode = showEpisode.files.anyObject;
+    self.titleLabel.text = showEpisode.name;
+    if (self.titleLabel.text.length < 1) {
+        self.titleLabel.text = [NSString stringWithFormat:@"S%02dE%02d", showEpisode.episodeNumber.intValue, showEpisode.seasonNumber.intValue];
+        self.subtitleLabel.text = [NSString stringWithFormat:@"%@", [VLCTime timeWithNumber:[anyFileFromEpisode duration]]];
+    } else
+        self.subtitleLabel.text = [NSString stringWithFormat:@"S%02dE%02d — %@", showEpisode.episodeNumber.intValue, showEpisode.seasonNumber.intValue, [VLCTime timeWithNumber:[anyFileFromEpisode duration]]];
+
+    CGFloat position = anyFileFromEpisode.lastPosition.floatValue;
+    self.progressView.progress = position;
+    self.progressView.hidden = ((position < .1f) || (position > .95f)) ? YES : NO;
+    [self.progressView setNeedsDisplay];
+    self.mediaIsUnreadView.hidden = !showEpisode.unread.intValue;
+}
+
+- (void)configureForMLFile:(MLFile *)mediaFile
+{
+    if ([mediaFile isAlbumTrack]) {
+        self.artistNameLabel.text = mediaFile.albumTrack.artist;
+        self.albumNameLabel.text = mediaFile.albumTrack.album.name;
+        self.titleLabel.text = (mediaFile.albumTrack.title.length > 0) ? mediaFile.albumTrack.title : mediaFile.title;
+        self.thumbnailView.image = nil;
+    } else if ([mediaFile isShowEpisode]) {
+        MLShowEpisode *episode = mediaFile.showEpisode;
+        self.seriesNameLabel.text = episode.show.name;
+        self.titleLabel.text = (episode.name.length > 0) ? [NSString stringWithFormat:@"%@ - S%02dE%02d", episode.name, mediaFile.showEpisode.seasonNumber.intValue, episode.episodeNumber.intValue] : [NSString stringWithFormat:@"S%02dE%02d", episode.seasonNumber.intValue, episode.episodeNumber.intValue];
+    } else
+        self.titleLabel.text = mediaFile.title;
+
+    VLCPlaylistViewController *delegate = (VLCPlaylistViewController*)self.collectionView.delegate;
+
+    if (delegate.isEditing)
+        self.subtitleLabel.text = [NSString stringWithFormat:@"%@ — %i MB", [VLCTime timeWithNumber:[mediaFile duration]], (int)([mediaFile fileSizeInBytes] / 1e6)];
+    else {
+        self.subtitleLabel.text = [NSString stringWithFormat:@"%@", [VLCTime timeWithNumber:[mediaFile duration]]];
+        if (mediaFile.videoTrack) {
+            NSString *width = [[mediaFile videoTrack] valueForKey:@"width"];
+            NSString *height = [[mediaFile videoTrack] valueForKey:@"height"];
+            if (width.intValue > 0 && height.intValue > 0)
+                self.subtitleLabel.text = [self.subtitleLabel.text stringByAppendingFormat:@" — %@x%@", width, height];
+        }
+    }
+
+    CGFloat position = mediaFile.lastPosition.floatValue;
+    self.progressView.progress = position;
+    self.progressView.hidden = ((position < .1f) || (position > .95f)) ? YES : NO;
+    [self.progressView setNeedsDisplay];
+    self.mediaIsUnreadView.hidden = !mediaFile.unread.intValue;
+}
+
+// Can be extracted outside of VLCPlaylistCollectionViewCell
+- (UIImage *)thumbnailForMediaFile:(MLFile *)mediaFile {
+    if (mediaFile == nil || mediaFile.objectID == nil)
+        return nil;
+
+    static NSMutableArray *_thumbnailCacheIndex;
+    static NSMutableDictionary *_thumbnailCache;
+    if (!_thumbnailCache)
+        _thumbnailCache = [[NSMutableDictionary alloc] initWithCapacity:MAX_CACHE_SIZE];
+    if (!_thumbnailCacheIndex)
+        _thumbnailCacheIndex = [[NSMutableArray alloc] initWithCapacity:MAX_CACHE_SIZE];
+
+    NSManagedObjectID *objID = mediaFile.objectID;
+    UIImage *displayedImage = nil;
+    if ([_thumbnailCacheIndex containsObject:objID]) {
+        [_thumbnailCacheIndex removeObject:objID];
+        [_thumbnailCacheIndex insertObject:objID atIndex:0];
+        displayedImage = [_thumbnailCache objectForKey:objID];
+        if (!displayedImage && mediaFile.computedThumbnail) {
+            displayedImage = mediaFile.computedThumbnail;
+            [_thumbnailCache setObject:displayedImage forKey:objID];
+        }
+    } else {
+        if (_thumbnailCacheIndex.count >= MAX_CACHE_SIZE) {
+            [_thumbnailCache removeObjectForKey:[_thumbnailCacheIndex lastObject]];
+            [_thumbnailCacheIndex removeLastObject];
+        }
+        displayedImage = mediaFile.computedThumbnail;
+
+        if (displayedImage) {
+            [_thumbnailCache setObject:displayedImage forKey:objID];
+            [_thumbnailCacheIndex insertObject:objID atIndex:0];
+        }
+    }
+
+    return displayedImage;
+}
+
+@end

AspenProject/VLCPlaylistCollectionViewCell.xib

+<?xml version="1.0" encoding="UTF-8"?>
+<archive type="com.apple.InterfaceBuilder3.CocoaTouch.iPad.XIB" version="8.00">
+	<data>
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+		<string key="IBDocument.HIToolboxVersion">626.00</string>
+		<object class="NSMutableDictionary" key="IBDocument.PluginVersions">
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+		</object>
+		<array key="IBDocument.IntegratedClassDependencies">
+			<string>IBProxyObject</string>
+			<string>IBUIButton</string>
+			<string>IBUICollectionViewCell</string>
+			<string>IBUIImageView</string>
+			<string>IBUILabel</string>
+			<string>IBUIView</string>
+		</array>
+		<array key="IBDocument.PluginDependencies">
+			<string>com.apple.InterfaceBuilder.IBCocoaTouchPlugin</string>
+		</array>
+		<object class="NSMutableDictionary" key="IBDocument.Metadata">
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+				<string key="IBProxiedObjectIdentifier">IBFirstResponder</string>
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+								<object class="NSColor" key="IBUITextColor">
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+								<reference key="IBUIFont" ref="154316482"/>
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+								<bool key="IBUIClipsSubviews">YES</bool>
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+								<bool key="IBUIUserInteractionEnabled">NO</bool>
+								<string key="targetRuntimeIdentifier">IBIPadFramework</string>
+								<string key="IBUIText">Subtitle</string>
+								<object class="NSColor" key="IBUITextColor">
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+									<bytes key="NSWhite">MC43MgA</bytes>
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+								<reference key="IBUIFontDescription" ref="106500751"/>
+								<reference key="IBUIFont" ref="939746159"/>
+								<bool key="IBUIAdjustsFontSizeToFit">NO</bool>
+							</object>
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+								<reference key="NSWindow"/>
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+								<string key="NSReuseIdentifierKey">_NS:9</string>
+								<bool key="IBUIOpaque">NO</bool>
+								<bool key="IBUIClipsSubviews">YES</bool>
+								<int key="IBUIContentMode">7</int>
+								<bool key="IBUIUserInteractionEnabled">NO</bool>
+								<string key="targetRuntimeIdentifier">IBIPadFramework</string>
+								<string key="IBUIText">Series Name</string>
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