]> git.saurik.com Git - cydia.git/blobdiff - MobileCydia.mm
Allow profiling usage of Database::sections_ in -[Database mappedSectionForPointer:].
[cydia.git] / MobileCydia.mm
index b955c08a1d7ac9f35dcf5886a5ba53e32e6ecc31..b7050fc6d3dafbded0ce1e5468f64f2a1b8bd902 100644 (file)
@@ -1355,6 +1355,8 @@ typedef std::map< unsigned long, _H<Source> > SourceMap;
     int cydiafd_;
     int statusfd_;
     FILE *input_;
+
+    std::map<const char *, _H<NSString> > sections_;
 }
 
 + (Database *) sharedInstance;
@@ -1388,6 +1390,9 @@ typedef std::map< unsigned long, _H<Source> > SourceMap;
 
 - (void) setDelegate:(id)delegate;
 - (Source *) getSource:(pkgCache::PkgFileIterator)file;
+
+- (NSString *) mappedSectionForPointer:(const char *)pointer;
+
 @end
 /* }}} */
 /* Delegate Helpers {{{ */
@@ -1825,7 +1830,8 @@ struct ParsedPackage {
 };
 
 @interface Package : NSObject {
-    uint32_t era_ : 29;
+    uint32_t era_ : 26;
+    uint32_t role_ : 3;
     uint32_t essential_ : 1;
     uint32_t obsolete_ : 1;
     uint32_t ignored_ : 1;
@@ -1844,7 +1850,7 @@ struct ParsedPackage {
     CYString latest_;
     CYString installed_;
 
-    CYString section_;
+    const char *section_;
     _transient NSString *section$_;
 
     Source *source_;
@@ -1853,7 +1859,6 @@ struct ParsedPackage {
     ParsedPackage *parsed_;
 
     NSMutableArray *tags_;
-    NSString *role_;
 }
 
 - (Package *) initWithVersion:(pkgCache::VerIterator)version withZone:(NSZone *)zone inPool:(apr_pool_t *)pool database:(Database *)database;
@@ -1915,7 +1920,6 @@ struct ParsedPackage {
 - (NSArray *) applications;
 
 - (Source *) source;
-- (NSString *) role;
 
 - (BOOL) matches:(NSString *)text;
 
@@ -2076,15 +2080,10 @@ struct PackageNameOrdering :
 - (void) dealloc {
     if (parsed_ != NULL)
         delete parsed_;
-
     if (source_ != nil)
         [source_ release];
-
     if (tags_ != nil)
         [tags_ release];
-    if (role_ != nil)
-        [role_ release];
-
     [super dealloc];
 }
 
@@ -2218,8 +2217,18 @@ struct PackageNameOrdering :
                     const char *name(tag.Name());
                     [tags_ addObject:[(NSString *)CYStringCreate(name) autorelease]];
 
-                    if (role_ == nil && strncmp(name, "role::", 6) == 0 /*&& strcmp(name, "role::leaper") != 0*/)
-                        role_ = (NSString *) CYStringCreate(name + 6);
+                    if (role_ == 0 && strncmp(name, "role::", 6) == 0 /*&& strcmp(name, "role::leaper") != 0*/) {
+                        if (strcmp(name + 6, "enduser") == 0)
+                            role_ = 1;
+                        else if (strcmp(name + 6, "hacker") == 0)
+                            role_ = 2;
+                        else if (strcmp(name + 6, "developer") == 0)
+                            role_ = 3;
+                        else if (strcmp(name + 6, "cydia") == 0)
+                            role_ = 7;
+                        else
+                            role_ = 4;
+                    }
 
                     if (strncmp(name, "cydia::", 7) == 0) {
                         if (strcmp(name + 7, "essential") == 0)
@@ -2267,7 +2276,7 @@ struct PackageNameOrdering :
         _end
 
         _profile(Package$initWithVersion$Section)
-            section_.set(NULL, iterator.Section());
+            section_ = iterator.Section();
         _end
 
         _profile(Package$initWithVersion$Flags)
@@ -2315,13 +2324,11 @@ struct PackageNameOrdering :
 
 - (NSString *) section {
     if (section$_ == nil) {
-        if (section_.empty())
+        if (section_ == NULL)
             return nil;
 
-        _profile(Package$section)
-            std::replace(section_.data(), section_.data() + section_.size(), '_', ' ');
-            NSString *name(section_);
-            section$_ = [SectionMap_ objectForKey:name] ?: name;
+        _profile(Package$section$mappedSectionForPointer)
+            section$_ = [database_ mappedSectionForPointer:section_];
         _end
     } return section$_;
 }
@@ -2471,12 +2478,12 @@ struct PackageNameOrdering :
 
 - (BOOL) unfiltered {
     _profile(Package$unfiltered$obsolete)
-        if (obsolete_)
+        if (_unlikely(obsolete_))
             return false;
     _end
 
     _profile(Package$unfiltered$hasSupportingRole)
-        if (![self hasSupportingRole])
+        if (_unlikely(![self hasSupportingRole]))
             return false;
     _end
 
@@ -2487,7 +2494,11 @@ struct PackageNameOrdering :
     if (![self unfiltered])
         return false;
 
-    NSString *section([self section]);
+    NSString *section;
+
+    _profile(Package$visible$section)
+        section = [self section];
+    _end
 
     _profile(Package$visible$isSectionVisible)
         if (section != nil && !isSectionVisible(section))
@@ -2710,10 +2721,6 @@ struct PackageNameOrdering :
     return source_ == (Source *) [NSNull null] ? nil : source_;
 }
 
-- (NSString *) role {
-    return role_;
-}
-
 - (BOOL) matches:(NSString *)text {
     if (text == nil)
         return NO;
@@ -2736,17 +2743,17 @@ struct PackageNameOrdering :
 }
 
 - (bool) hasSupportingRole {
-    if (role_ == nil)
+    if (role_ == 0)
         return true;
-    if ([role_ isEqualToString:@"enduser"])
+    if (role_ == 1)
         return true;
     if ([Role_ isEqualToString:@"User"])
         return false;
-    if ([role_ isEqualToString:@"hacker"])
+    if (role_ == 2)
         return true;
     if ([Role_ isEqualToString:@"Hacker"])
         return false;
-    if ([role_ isEqualToString:@"developer"])
+    if (role_ == 3)
         return true;
     if ([Role_ isEqualToString:@"Developer"])
         return false;
@@ -2868,7 +2875,7 @@ struct PackageNameOrdering :
 }
 
 - (bool) isInstalledAndUnfiltered:(NSNumber *)number {
-    return ![self uninstalled] && (![number boolValue] && ![role_ isEqualToString:@"cydia"] || [self unfiltered]);
+    return ![self uninstalled] && (![number boolValue] && role_ != 7 || [self unfiltered]);
 }
 
 - (bool) isVisibleInSection:(NSString *)name {
@@ -3677,6 +3684,37 @@ static NSString *Warning_;
     return i == sources_.end() ? nil : i->second;
 }
 
+- (NSString *) mappedSectionForPointer:(const char *)section {
+    _H<NSString> *mapped;
+
+    _profile(Database$mappedSectionForPointer$Cache)
+        mapped = &sections_[section];
+    _end
+
+    if (*mapped == NULL) {
+        size_t length(strlen(section));
+        char spaced[length + 1];
+
+        _profile(Database$mappedSectionForPointer$Replace)
+            for (size_t index(0); index != length; ++index)
+                spaced[index] = section[index] == '_' ? ' ' : section[index];
+            spaced[length] = '\0';
+        _end
+
+        NSString *string;
+
+        _profile(Database$mappedSectionForPointer$stringWithUTF8String)
+            string = [NSString stringWithUTF8String:spaced];
+        _end
+
+        _profile(Database$mappedSectionForPointer$Map)
+            string = [SectionMap_ objectForKey:string] ?: string;
+        _end
+
+        *mapped = string;
+    } return *mapped;
+}
+
 @end
 /* }}} */
 
@@ -3933,6 +3971,71 @@ bool DepSubstrate(const pkgCache::VerIterator &iterator) {
 @end
 /* }}} */
 
+/* @ Loading... Indicator {{{ */
+@interface CYLoadingIndicator : UIView {
+    UIActivityIndicatorView *spinner_;
+    UILabel *label_;
+    UIView *container_;
+}
+
+@property (readonly, nonatomic) UILabel *label;
+@property (readonly, nonatomic) UIActivityIndicatorView *activityIndicatorView;
+
+@end
+
+@implementation CYLoadingIndicator
+
+- (id)initWithFrame:(CGRect)frame {
+    if ((self = [super initWithFrame:frame])) {
+        container_ = [[[UIView alloc] init] autorelease];
+        [container_ setAutoresizingMask:UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleBottomMargin];
+
+        spinner_ = [[[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray] autorelease];
+        [spinner_ startAnimating];
+        [container_ addSubview:spinner_];
+
+        label_ = [[[UILabel alloc] init] autorelease];
+        [label_ setFont:[UIFont boldSystemFontOfSize:15.0f]];
+        [label_ setBackgroundColor:[UIColor clearColor]];
+        [label_ setTextColor:[UIColor blackColor]];
+        [label_ setShadowColor:[UIColor whiteColor]];
+        [label_ setShadowOffset:CGSizeMake(0, 1)];
+        [label_ setText:[NSString stringWithFormat:Elision_, UCLocalize("LOADING"), nil]];
+        [container_ addSubview:label_];
+
+        CGSize viewsize = frame.size;
+        CGSize spinnersize = [spinner_ bounds].size;
+        CGSize textsize = [[label_ text] sizeWithFont:[label_ font]];
+        float bothwidth = spinnersize.width + textsize.width + 5.0f;
+
+        CGRect containrect = {
+            CGPointMake(floorf((viewsize.width / 2) - (bothwidth / 2)), floorf((viewsize.height / 2) - (spinnersize.height / 2))),
+            CGSizeMake(bothwidth, spinnersize.height)
+        };
+        CGRect textrect = {
+            CGPointMake(spinnersize.width + 5.0f, floorf((spinnersize.height / 2) - (textsize.height / 2))),
+            textsize
+        };
+        CGRect spinrect = {
+            CGPointZero,
+            spinnersize
+        };
+
+        [container_ setFrame:containrect];
+        [spinner_ setFrame:spinrect];
+        [label_ setFrame:textrect];
+        [self addSubview:container_];
+    }
+
+    return self;
+}
+
+- (UILabel *)label { return label_; }
+- (UIActivityIndicatorView *)activityIndicatorView { return spinner_; }
+
+@end
+/* }}} */
+
 /* Cydia Browser Controller {{{ */
 @interface CYBrowserController : BrowserController {
     CydiaObject *cydia_;
@@ -5079,7 +5182,7 @@ bool DepSubstrate(const pkgCache::VerIterator &iterator) {
 }
 
 - (void) drawContentRect:(CGRect)rect {
-    bool highlighted(highlighted_);
+    bool highlighted(highlighted_ && !editing_);
 
     [icon_ drawInRect:CGRectMake(8, 7, 32, 32)];
 
@@ -5341,7 +5444,10 @@ bool DepSubstrate(const pkgCache::VerIterator &iterator) {
 }
 
 - (void) reloadButtonClicked {
-    // Don't reload a package view by clicking the button.
+    // Don't reload a commerical package by tapping the loading button,
+    // but if it's not an Install button, we should forward it on.
+    if (![package_ uninstalled])
+        [self _customButtonClicked];
 }
 
 - (void) applyLoadingTitle {
@@ -5470,13 +5576,17 @@ bool DepSubstrate(const pkgCache::VerIterator &iterator) {
     [super dealloc];
 }
 
++ (BOOL) hasIndexedCollation {
+    return NO; // XXX: objc_getClass("UILocalizedIndexedCollation") != nil;
+}
+
 - (NSInteger) numberOfSectionsInTableView:(UITableView *)list {
     NSInteger count([sections_ count]);
     return count == 0 ? 1 : count;
 }
 
 - (NSString *) tableView:(UITableView *)list titleForHeaderInSection:(NSInteger)section {
-    if ([sections_ count] == 0)
+    if ([sections_ count] == 0 || [[sections_ objectAtIndex:section] count] == 0)
         return nil;
     return [[sections_ objectAtIndex:section] name];
 }
@@ -5522,10 +5632,15 @@ bool DepSubstrate(const pkgCache::VerIterator &iterator) {
 }
 
 - (NSArray *) sectionIndexTitlesForTableView:(UITableView *)tableView {
+    // XXX: is 20 the most optimal number here?
     return [packages_ count] > 20 ? index_ : nil;
 }
 
-- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index {
+- (NSInteger) tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index {
+    if ([[self class] hasIndexedCollation]) {
+        return [[objc_getClass("UILocalizedIndexedCollation") currentCollation] sectionForSectionIndexTitleAtIndex:index];
+    }
+
     return index;
 }
 
@@ -5536,7 +5651,9 @@ bool DepSubstrate(const pkgCache::VerIterator &iterator) {
         target_ = target;
         action_ = action;
 
-        index_ = [[NSMutableArray alloc] initWithCapacity:32];
+        index_ = [[self class] hasIndexedCollation]
+            ? [[[objc_getClass("UILocalizedIndexedCollation") currentCollation] sectionIndexTitles] retain]
+            : [[NSMutableArray alloc] initWithCapacity:32];
         indices_ = [[NSMutableDictionary alloc] initWithCapacity:32];
 
         packages_ = [[NSMutableArray arrayWithCapacity:16] retain];
@@ -5573,37 +5690,70 @@ bool DepSubstrate(const pkgCache::VerIterator &iterator) {
                 [packages_ addObject:package];
     _end
 
-    [index_ removeAllObjects];
     [indices_ removeAllObjects];
 
     Section *section = nil;
 
-    _profile(PackageTable$reloadData$Section)
-        for (size_t offset(0), end([packages_ count]); offset != end; ++offset) {
-            Package *package;
-            unichar index;
+    if ([[self class] hasIndexedCollation]) {
+        id collation = [objc_getClass("UILocalizedIndexedCollation") currentCollation];
+        NSArray *titles = [collation sectionIndexTitles];
+        int secidx = -1;
 
-            _profile(PackageTable$reloadData$Section$Package)
-                package = [packages_ objectAtIndex:offset];
-                index = [package index];
-            _end
+        _profile(PackageTable$reloadData$Section)
+            for (size_t offset(0), end([packages_ count]); offset != end; ++offset) {
+                Package *package;
+                int index;
 
-            if (section == nil || [section index] != index) {
-                _profile(PackageTable$reloadData$Section$Allocate)
-                    section = [[[Section alloc] initWithIndex:index row:offset] autorelease];
+                _profile(PackageTable$reloadData$Section$Package)
+                    package = [packages_ objectAtIndex:offset];
+                    index = [collation sectionForObject:package collationStringSelector:@selector(name)];
                 _end
 
-                [index_ addObject:[section name]];
-                //[indices_ setObject:[NSNumber numberForInt:[sections_ count]] forKey:index];
+                while (secidx < index) {
+                    secidx += 1;
 
-                _profile(PackageTable$reloadData$Section$Add)
-                    [sections_ addObject:section];
-                _end
+                    _profile(PackageTable$reloadData$Section$Allocate)
+                        section = [[[Section alloc] initWithName:[titles objectAtIndex:secidx] row:offset localize:NO] autorelease];
+                    _end
+
+                    _profile(PackageTable$reloadData$Section$Add)
+                        [sections_ addObject:section];
+                    _end
+                }
+
+                [section addToCount];
             }
+        _end
+    } else {
+        [index_ removeAllObjects];
 
-            [section addToCount];
-        }
-    _end
+        _profile(PackageTable$reloadData$Section)
+            for (size_t offset(0), end([packages_ count]); offset != end; ++offset) {
+                Package *package;
+                unichar index;
+
+                _profile(PackageTable$reloadData$Section$Package)
+                    package = [packages_ objectAtIndex:offset];
+                    index = [package index];
+                _end
+
+                if (section == nil || [section index] != index) {
+                    _profile(PackageTable$reloadData$Section$Allocate)
+                        section = [[[Section alloc] initWithIndex:index row:offset] autorelease];
+                    _end
+
+                    [index_ addObject:[section name]];
+                    //[indices_ setObject:[NSNumber numberForInt:[sections_ count]] forKey:index];
+
+                    _profile(PackageTable$reloadData$Section$Add)
+                        [sections_ addObject:section];
+                    _end
+                }
+
+                [section addToCount];
+            }
+        _end
+    }
 
     _profile(PackageTable$reloadData$List)
         [list_ reloadData];
@@ -6389,6 +6539,10 @@ bool DepSubstrate(const pkgCache::VerIterator &iterator) {
 
 @implementation HomeController
 
++ (BOOL)shouldHideNavigationBar {
+    return NO;
+}
+
 - (void) _setMoreHeaders:(NSMutableURLRequest *)request {
     [super _setMoreHeaders:request];
 
@@ -6419,12 +6573,16 @@ bool DepSubstrate(const pkgCache::VerIterator &iterator) {
 
 - (void) viewWillAppear:(BOOL)animated {
     [super viewWillAppear:animated];
-    //[[self navigationController] setNavigationBarHidden:YES animated:animated];
+
+    if ([[self class] shouldHideNavigationBar])
+        [[self navigationController] setNavigationBarHidden:YES animated:animated];
 }
 
 - (void) viewWillDisappear:(BOOL)animated {
     [super viewWillDisappear:animated];
-    //[[self navigationController] setNavigationBarHidden:NO animated:animated];
+
+    if ([[self class] shouldHideNavigationBar])
+        [[self navigationController] setNavigationBarHidden:NO animated:animated];
 }
 
 - (id) init {
@@ -6912,6 +7070,8 @@ freeing the view controllers on tab change */
     // Inherit autorotation settings for modal parents.
     if ([self parentViewController] && [[self parentViewController] modalViewController] == self) {
         return [[self parentViewController] shouldAutorotateToInterfaceOrientation:orientation];
+    } else if ([self parentViewController]) {
+        return [[self parentViewController] shouldAutorotateToInterfaceOrientation:orientation];
     } else {
         return [super shouldAutorotateToInterfaceOrientation:orientation];
     }
@@ -8039,10 +8199,6 @@ static _finline void _setHomePage(Cydia *self) {
     return [tabbar_ updating];
 }
 
-- (UIView *) rotatingContentViewForWindow:(UIWindow *)window {
-    return window_;
-}
-
 - (void) _loaded {
     if ([broken_ count] != 0) {
         int count = [broken_ count];
@@ -8289,10 +8445,6 @@ static _finline void _setHomePage(Cydia *self) {
         _error->Discard();
 }
 
-- (CGRect) popUpBounds {
-    return [[tabbar_ view] bounds];
-}
-
 - (bool) perform {
     if (![database_ prepare])
         return false;
@@ -8702,8 +8854,6 @@ static _finline void _setHomePage(Cydia *self) {
     CYViewController *page = nil;
     int tag = 0;
 
-    NSLog(@"open url: %@", url);
-
     if ((page = [self pageForURL:url hasTag:&tag])) {
         [self setPage:page];
         tag_ = tag;
@@ -8715,7 +8865,7 @@ static _finline void _setHomePage(Cydia *self) {
 
 - (void) applicationOpenURL:(NSURL *)url {
     [super applicationOpenURL:url];
-    NSLog(@"first: %@", url);
+
     if (!loaded_) starturl_ = [url retain];
     else [self openCydiaURL:url];
 }
@@ -8790,6 +8940,20 @@ static _finline void _setHomePage(Cydia *self) {
     [tabbar_ setViewControllers:controllers];
 }
 
+- (void)showFakeTabBarInView:(UIView *)view {
+    static UITabBar *fake = [[UITabBar alloc] initWithFrame:CGRectMake(0, 0, 0, 49.0f)];
+    if (view != nil) {
+        CGRect frame = [fake frame];
+        frame.origin.y = [view frame].size.height - frame.size.height;
+        frame.size.width = [view frame].size.width;
+        [fake setFrame:frame];
+        [fake setAutoresizingMask:UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleTopMargin];
+        [view addSubview:fake];
+    } else {
+        [fake removeFromSuperview];
+    }
+}
+
 - (void) applicationDidFinishLaunching:(id)unused {
 _trace();
     CydiaApp = self;
@@ -8815,9 +8979,7 @@ _trace();
     essential_ = [[NSMutableArray alloc] initWithCapacity:4];
     broken_ = [[NSMutableArray alloc] initWithCapacity:4];
 
-    UIScreen *screen([UIScreen mainScreen]);
-
-    window_ = [[UIWindow alloc] initWithFrame:[screen bounds]];
+    window_ = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
     [window_ orderFront:self];
     [window_ makeKey:self];
     [window_ setHidden:NO];
@@ -8850,6 +9012,7 @@ _trace();
 
     // Show pinstripes while loading data.
     [[tabbar_ view] setBackgroundColor:[UIColor pinStripeColor]];
+    [self showFakeTabBarInView:[tabbar_ tabBar]];
 
     [self performSelector:@selector(loadData) withObject:nil afterDelay:0];
 _trace();
@@ -8862,47 +9025,14 @@ _trace();
         return;
     }
 
+    CGRect fixframe = [[tabbar_ view] frame];
+    if (UIInterfaceOrientationIsLandscape([[UIApplication sharedApplication] statusBarOrientation]))
+        fixframe.size = CGSizeMake(fixframe.size.height, fixframe.size.width);
+    CYLoadingIndicator *loading = [[[CYLoadingIndicator alloc] initWithFrame:fixframe] autorelease];
+    [loading setAutoresizingMask:UIViewAutoresizingFlexibleBoth];
+    [[tabbar_ view] addSubview:loading];
     [window_ setUserInteractionEnabled:NO];
 
-    UIView *container = [[[UIView alloc] init] autorelease];
-    [container setAutoresizingMask:UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleBottomMargin];
-
-    UIActivityIndicatorView *spinner = [[[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray] autorelease];
-    [spinner startAnimating];
-    [container addSubview:spinner];
-
-    UILabel *label = [[[UILabel alloc] init] autorelease];
-    [label setFont:[UIFont boldSystemFontOfSize:15.0f]];
-    [label setBackgroundColor:[UIColor clearColor]];
-    [label setTextColor:[UIColor blackColor]];
-    [label setShadowColor:[UIColor whiteColor]];
-    [label setShadowOffset:CGSizeMake(0, 1)];
-    [label setText:[NSString stringWithFormat:Elision_, UCLocalize("LOADING"), nil]];
-    [container addSubview:label];
-
-    CGSize viewsize = [[tabbar_ view] frame].size;
-    CGSize spinnersize = [spinner bounds].size;
-    CGSize textsize = [[label text] sizeWithFont:[label font]];
-    float bothwidth = spinnersize.width + textsize.width + 5.0f;
-
-    CGRect containrect = {
-        CGPointMake(floorf((viewsize.width / 2) - (bothwidth / 2)), floorf((viewsize.height / 2) - (spinnersize.height / 2))),
-        CGSizeMake(bothwidth, spinnersize.height)
-    };
-    CGRect textrect = {
-        CGPointMake(spinnersize.width + 5.0f, floorf((spinnersize.height / 2) - (textsize.height / 2))),
-        textsize
-    };
-    CGRect spinrect = {
-        CGPointZero,
-        spinnersize
-    };
-
-    [container setFrame:containrect];
-    [spinner setFrame:spinrect];
-    [label setFrame:textrect];
-    [[tabbar_ view] addSubview:container];
-
     [self reloadData];
     PrintTimes();
 
@@ -8912,6 +9042,8 @@ _trace();
         _setHomePage(self);
     }
 
+    [self showFakeTabBarInView:nil];
+
     [starturl_ release];
     starturl_ = nil;
 
@@ -8919,7 +9051,7 @@ _trace();
 
     // XXX: does this actually slow anything down?
     [[tabbar_ view] setBackgroundColor:[UIColor clearColor]];
-    [container removeFromSuperview];
+    [loading removeFromSuperview];
 }
 
 - (void) showActionSheet:(UIActionSheet *)sheet fromItem:(UIBarButtonItem *)item {