add delete button to TTPhotoViewController

LICENSE

@@ -11,4 +11,3 @@ distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-s

src/TTPhotoViewController.m

@@ -86,6 +86,7 @@ - (void)updateChrome {
   playButton.enabled = _photoSource.numberOfPhotos > 1;
   _previousButton.enabled = _centerPhotoIndex > 0;
   _nextButton.enabled = _centerPhotoIndex >= 0 && _centerPhotoIndex < _photoSource.numberOfPhotos-1;
+  _deleteButton.enabled = _photoSource.numberOfPhotos > 0;
 }
 
 - (void)updateToolbarWithOrientation:(UIInterfaceOrientation)interfaceOrientation {
@@ -267,6 +268,38 @@ - (void)previousAction {
   }
 }
 
+
+-(void)deleteFromSource
+{
+	[_photoSource deletePhotoAtIndex:_centerPhotoIndex+1];
+	[self updateChrome];
+}
+
+- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex
+{
+	if (!buttonIndex == [actionSheet cancelButtonIndex])
+		{
+			[_photoSource deletePhotoAtIndex:_centerPhotoIndex];
+			//[self previousAction];
+			[self showActivity:nil];
+			[self moveToNextValidPhoto];
+			[_scrollView reloadData];
+			[self refresh];
+		}
+}
+
+- (void)deleteAction {
+	UIActionSheet *actionSheet = [[UIActionSheet alloc] 
+								  initWithTitle:@"Are you sure you want to delete this photo?" 
+								  delegate:self 
+								  cancelButtonTitle:@"Cancel"
+								  destructiveButtonTitle:@"OK"
+								  otherButtonTitles: nil];
+
+	[actionSheet showInView:self.view];
+	[actionSheet release];
+}
+
 - (void)showBarsAnimationDidStop {
   self.navigationController.navigationBarHidden = NO;
 }
@@ -304,6 +337,7 @@ - (id)init {
     _captionStyle = nil;
     _nextButton = nil;
     _previousButton = nil;
+	_deleteButton = nil;
     _statusText = nil;
     _thumbsController = nil;
     _slideshowTimer = nil;
@@ -365,6 +399,10 @@ - (void)loadView {
     TTIMAGE(@"bundle://Three20.bundle/images/previousIcon.png")
      style:UIBarButtonItemStylePlain target:self action:@selector(previousAction)];
 
+  _deleteButton = [[UIBarButtonItem alloc] initWithImage:
+					   TTIMAGE(@"bundle://Three20.bundle/images/deleteIcon.png")
+													   style:UIBarButtonItemStylePlain target:self action:@selector(deleteAction)];
+
   UIBarButtonItem* playButton = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:
     UIBarButtonSystemItemPlay target:self action:@selector(playAction)] autorelease];
   playButton.tag = 1;
@@ -378,7 +416,7 @@ - (void)loadView {
   _toolbar.barStyle = self.navigationBarStyle;
   _toolbar.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleTopMargin;
   _toolbar.items = [NSArray arrayWithObjects:
-                   space, _previousButton, space, _nextButton, space, nil];
+                   space, _previousButton, space, _nextButton, space, _deleteButton, nil];
   [_innerView addSubview:_toolbar];    
 }
 
@@ -391,6 +429,7 @@ - (void)viewDidUnload {
   TT_RELEASE_SAFELY(_photoStatusView);
   TT_RELEASE_SAFELY(_nextButton);
   TT_RELEASE_SAFELY(_previousButton);
+  TT_RELEASE_SAFELY(_deleteButton);
   TT_RELEASE_SAFELY(_toolbar);
 }
 

src/Three20/TTPhotoSource.h

@@ -40,6 +40,11 @@ typedef enum {
  */
 - (id<TTPhoto>)photoAtIndex:(NSInteger)index;
 
+/**
+ *
+ */
+- (void)deletePhotoAtIndex:(NSInteger)index;
+
 @end
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////

src/Three20/TTPhotoViewController.h

@@ -6,7 +6,7 @@
 @class TTScrollView, TTPhotoView, TTStyle;
 
 @interface TTPhotoViewController : TTModelViewController
-          <TTScrollViewDelegate, TTScrollViewDataSource, TTThumbsViewControllerDelegate> {
+          <TTScrollViewDelegate, TTScrollViewDataSource, TTThumbsViewControllerDelegate, UIActionSheetDelegate> {
   id<TTPhotoSource> _photoSource;
   id<TTPhoto> _centerPhoto;
   NSInteger _centerPhotoIndex;
@@ -16,6 +16,7 @@
   UIToolbar* _toolbar;
   UIBarButtonItem* _nextButton;
   UIBarButtonItem* _previousButton;
+  UIBarButtonItem* _deleteButton;
   TTStyle* _captionStyle;
   UIImage* _defaultImage;
   NSString* _statusText;