• re-implemented tooltips for Content and Query tables

- catch exceptions while retrieving the original table data while/before reloading/changing the table source data
- 'image' is now set to autorelease

1 files changed, 35 insertions, 30 deletions

diff --git a/Source/TableContent.m b/Source/TableContent.m
index f4e3d01b..7b458947 100644
--- a/Source/TableContent.m
+++ b/Source/TableContent.m
@@ -1796,36 +1796,41 @@
  * - if blob data can be interpret as image data display the image as  transparent thumbnail
  *    (up to now using base64 encoded HTML data)
  */
-// - (NSString *)tableView:(NSTableView *)aTableView toolTipForCell:(SPTextAndLinkCell *)aCell rect:(NSRectPointer)rect tableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)row mouseLocation:(NSPoint)mouseLocation
-// {
-// 
-// 	NSImage *image;
-// 
-// 	if([[aCell stringValue] length] < 1) return nil;
-// 
-// 	NSPoint pos = [NSEvent mouseLocation];
-// 	pos.y -= 20;
-// 	
-// 	// Get the original data for trying to display the blob data as an image
-// 	id theValue = NSArrayObjectAtIndex(NSArrayObjectAtIndex(tableValues, row), [[aTableColumn identifier] intValue]);
-// 	if ([theValue isKindOfClass:[NSData class]]) {
-// 		image = [[NSImage alloc] initWithData:theValue];
-// 		if(image) {
-// 			[SPTooltip showWithObject:image atLocation:pos ofType:@"image"];
-// 			[image release];
-// 			theValue = nil;
-// 			return nil;
-// 		}
-// 	}
-// 
-// 	if(image) [image release];
-// 
-// 	// Show the cell string value as tooltip (including line breaks and tabs)
-// 	if([[aCell stringValue] length] > 1)
-// 		[SPTooltip showWithObject:[aCell stringValue] atLocation:pos];
-// 
-// 	return nil;
-// }
+- (NSString *)tableView:(NSTableView *)aTableView toolTipForCell:(SPTextAndLinkCell *)aCell rect:(NSRectPointer)rect tableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)row mouseLocation:(NSPoint)mouseLocation
+{
+
+	if([[aCell stringValue] length] < 2) return nil;
+
+	NSImage *image;
+
+	NSPoint pos = [NSEvent mouseLocation];
+	pos.y -= 20;
+	
+	// Try to get the original data. If not possible return nil.
+	// @try clause is used due to the multifarious cases of
+	// possible exceptions (eg for reloading tables etc.)
+	id theValue;
+	@try{
+		theValue = NSArrayObjectAtIndex(NSArrayObjectAtIndex(tableValues, row), [[aTableColumn identifier] intValue]);
+	}
+	@catch(id ae) {
+		return nil;
+	}
+
+	// Get the original data for trying to display the blob data as an image
+	if ([theValue isKindOfClass:[NSData class]]) {
+		image = [[[NSImage alloc] initWithData:theValue] autorelease];
+		if(image) {
+			[SPTooltip showWithObject:image atLocation:pos ofType:@"image"];
+			return nil;
+		}
+	}
+
+	// Show the cell string value as tooltip (including line breaks and tabs)
+	[SPTooltip showWithObject:[aCell stringValue] atLocation:pos];
+
+	return nil;
+}
 
 - (int)numberOfRowsInTableView:(NSTableView *)aTableView
 {