Revision: 9421
          http://sourceforge.net/p/skim-app/code/9421
Author:   hofman
Date:     2017-05-16 21:02:53 +0000 (Tue, 16 May 2017)
Log Message:
-----------
no need to cancel requests that are not used anymore

Modified Paths:
--------------
    trunk/SKMainWindowController.m

Modified: trunk/SKMainWindowController.m
===================================================================
--- trunk/SKMainWindowController.m      2017-05-16 20:59:31 UTC (rev 9420)
+++ trunk/SKMainWindowController.m      2017-05-16 21:02:53 UTC (rev 9421)
@@ -1101,8 +1101,6 @@
 
 - (void)removeAllObjectsFromThumbnails {
     if ([thumbnails count]) {
-        // cancel all delayed perform requests for makeImageForThumbnail:
-        [[self class] cancelPreviousPerformRequestsWithTarget:self];
         NSIndexSet *indexes = [NSIndexSet 
indexSetWithIndexesInRange:NSMakeRange(0, [thumbnails count])];
         [self willChange:NSKeyValueChangeRemoval valuesAtIndexes:indexes 
forKey:THUMBNAILS_KEY];
         [thumbnails removeAllObjects];
@@ -2563,9 +2561,6 @@
 }
 
 - (void)resetThumbnails {
-    // cancel all delayed perform requests for makeImageForThumbnail:
-    for (SKThumbnail *tn in thumbnails)
-        [[self class] cancelPreviousPerformRequestsWithTarget:self 
selector:@selector(makeImageForThumbnail:) object:tn];
     [self willChangeValueForKey:THUMBNAILS_KEY];
     [thumbnails removeAllObjects];
     if ([pageLabels count] > 0) {

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