iOS: add support for sharing documents with other apps

2 files changed, 54 insertions, 7 deletions

diff --git a/platform/ios/Classes/MuDocumentController.h b/platform/ios/Classes/MuDocumentController.h
index 29a9ac1a..094c247d 100644
--- a/platform/ios/Classes/MuDocumentController.h
+++ b/platform/ios/Classes/MuDocumentController.h
@@ -38,7 +38,7 @@ enum
 	UISearchBar *searchBar;
 	UIBarButtonItem *nextButton, *prevButton, *cancelButton, *searchButton, *outlineButton, *linkButton;
 	UIBarButtonItem *moreButton;
-	UIBarButtonItem *printButton, *annotButton;
+	UIBarButtonItem *shareButton, *printButton, *annotButton;
 	UIBarButtonItem *highlightButton, *underlineButton, *strikeoutButton;
 	UIBarButtonItem *inkButton;
 	UIBarButtonItem *tickButton;
diff --git a/platform/ios/Classes/MuDocumentController.m b/platform/ios/Classes/MuDocumentController.m
index 9893b211..3e95b505 100644
--- a/platform/ios/Classes/MuDocumentController.m
+++ b/platform/ios/Classes/MuDocumentController.m
@@ -15,6 +15,11 @@
 #define MIN_SCALE (1.0)
 #define MAX_SCALE (5.0)
 
+static NSString *const AlertTitle = @"Save Document?";
+// Correct functioning of the app relies on CloseAlertMessage and ShareAlertMessage differing
+static NSString *const CloseAlertMessage = @"Changes have been made to the document that will be lost if not saved";
+static NSString *const ShareAlertMessage = @"Your changes will not be shared unless the document is first saved";
+
 static void flattenOutline(NSMutableArray *titles, NSMutableArray *pages, fz_outline *outline, int level)
 {
 	char indent[8*4+1];
@@ -251,6 +256,7 @@ static void saveDoc(char *current_path, fz_document *doc)
 	reflowButton = [self resourceBasedButton:@"ic_reflow" withAction:@selector(onToggleReflow:)];
 	moreButton = [self resourceBasedButton:@"ic_more" withAction:@selector(onMore:)];
 	annotButton = [self resourceBasedButton:@"ic_annotation" withAction:@selector(onAnnot:)];
+	shareButton = [self resourceBasedButton:@"ic_share" withAction:@selector(onShare:)];
 	printButton = [self resourceBasedButton:@"ic_print" withAction:@selector(onPrint:)];
 	highlightButton = [self resourceBasedButton:@"ic_highlight" withAction:@selector(onHighlight:)];
 	underlineButton = [self resourceBasedButton:@"ic_underline" withAction:@selector(onUnderline:)];
@@ -281,13 +287,18 @@ static void saveDoc(char *current_path, fz_document *doc)
 	[slider release]; slider = nil;
 	[sliderWrapper release]; sliderWrapper = nil;
 	[reflowButton release]; reflowButton = nil;
+	[backButton release]; backButton = nil;
 	[moreButton release]; moreButton = nil;
 	[searchBar release]; searchBar = nil;
 	[outlineButton release]; outlineButton = nil;
+	[linkButton release]; linkButton = nil;
 	[searchButton release]; searchButton = nil;
 	[cancelButton release]; cancelButton = nil;
 	[prevButton release]; prevButton = nil;
 	[nextButton release]; nextButton = nil;
+	[shareButton release]; shareButton = nil;
+	[printButton release]; printButton = nil;
+	[annotButton release]; annotButton = nil;
 	[highlightButton release]; highlightButton = nil;
 	[underlineButton release]; underlineButton = nil;
 	[strikeoutButton release]; strikeoutButton = nil;
@@ -448,7 +459,7 @@ static void saveDoc(char *current_path, fz_document *doc)
 
 - (void) showMoreMenu
 {
-	[[self navigationItem] setRightBarButtonItems:[NSArray arrayWithObjects:printButton, annotButton, nil]];
+	[[self navigationItem] setRightBarButtonItems:[NSArray arrayWithObjects:annotButton, printButton, shareButton, nil]];
 	[[self navigationItem] setLeftBarButtonItem:cancelButton];
 
 	barmode = BARMODE_MORE;
@@ -511,6 +522,28 @@ static void saveDoc(char *current_path, fz_document *doc)
 	}
 }
 
+- (void) shareDocument
+{
+	NSURL *url = [NSURL fileURLWithPath:[NSString stringWithUTF8String:filePath]];
+	UIActivityViewController *cont = [[UIActivityViewController alloc] initWithActivityItems:[NSArray arrayWithObject:url] applicationActivities:nil];
+	[self presentViewController:cont animated:YES completion:nil];
+}
+
+- (void) onShare: (id)sender
+{
+	pdf_document *idoc = pdf_specifics(doc);
+	if (idoc && pdf_has_unsaved_changes(idoc))
+	{
+		UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:AlertTitle message:ShareAlertMessage delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Save and Share", nil];
+		[alertView show];
+		[alertView release];
+	}
+	else
+	{
+		[self shareDocument];
+	}
+}
+
 - (void) textSelectModeOn
 {
 	[[self navigationItem] setRightBarButtonItems:[NSArray arrayWithObject:tickButton]];
@@ -664,9 +697,10 @@ static void saveDoc(char *current_path, fz_document *doc)
 	if (idoc && pdf_has_unsaved_changes(idoc))
 	{
 		UIAlertView *saveAlert = [[UIAlertView alloc]
-			initWithTitle:@"Save changes?" message:nil delegate:self
+			initWithTitle:AlertTitle message:CloseAlertMessage delegate:self
 			cancelButtonTitle:@"Discard" otherButtonTitles:@"Save", nil];
 		[saveAlert show];
+		[saveAlert release];
 	}
 	else
 	{
@@ -676,11 +710,24 @@ static void saveDoc(char *current_path, fz_document *doc)
 
 - (void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
 {
-	if (buttonIndex == 1)
-		saveDoc(filePath, doc);
+	if ([CloseAlertMessage isEqualToString:alertView.message])
+	{
+		if (buttonIndex == 1)
+			saveDoc(filePath, doc);
 
-	[alertView dismissWithClickedButtonIndex:buttonIndex animated:YES];
-	[[self navigationController] popViewControllerAnimated:YES];
+		[alertView dismissWithClickedButtonIndex:buttonIndex animated:YES];
+		[[self navigationController] popViewControllerAnimated:YES];
+	}
+
+	if ([ShareAlertMessage isEqualToString:alertView.message])
+	{
+		[alertView dismissWithClickedButtonIndex:buttonIndex animated:NO];
+		if (buttonIndex == 1)
+		{
+			saveDoc(filePath, doc);
+			[self shareDocument];
+		}
+	}
 }
 
 - (void) resetSearch