Out of curiosity, did you ever check the retain counts on your webview
objects?
I create my webview with:
- (void)setUrl:(NSString *)value
{
[self willChangeValueForKey:@"url"];
[self setPrimitiveUrl:value];
[self didChangeValueForKey:@"url"];
NSRect rect = NSMakeRect(0, 0, 900, 1164);
webView = [[WebView alloc] initWithFrame:rect
frameName:@"MyFrame" groupName:@"MyGroup"];
[webView setFrameLoadDelegate:self];
[webView setMainFrameURL:value];
}
and then do the following:
- (void)webView:(WebView *)sender didFinishLoadForFrame:(WebFrame
*)frame
{
if(frame == [sender mainFrame]) {
... grab thumbnail image ...
[webView stopLoading:nil];
[webView setFrameLoadDelegate:nil];
NSLog(@"retain count (before): %d", CFGetRetainCount(webView));
[webView release];
NSLog(@"retain count (after): %d", CFGetRetainCount(webView));
}
}
and the log file shows a retain count of 2 before, and 1 after.
Something else is holding onto my webView, or it has been so long
since I've programmed cocoa in anger that I've lost all sense of alloc/
init behavior.
Cheers,
Tim R.
On Jun 6, 2008, at 7:06 PM, Adam R. Maxwell wrote:
On Jun 5, 2008, at 7:03 PM, Timothy Ritchey wrote:
even if I track frame commit/finish load as suggested in the
thread, if I try to get rid of the webview, the world falls down
around me when it can't push out that last delegate call of
didReceiveTitle.
I generally send stopLoading: to a webview before disposing of it
(and set any delegates to nil).
I tried even counting title/icon, etc. and that didn't even help
(you can see there are two calls to the title delegate, both for
the main frame. There just doesn't appear to be a deterministic way
to figure out when WebView is actually done, and safe to release.
Have you tried using -isLoading in the didFinishLoadForFrame:
delegate method? After seeing this thread, I switched my own
webview thumbnailing code to use that, since previously I was just
checking to see if the main frame finished loading. Seems to work.
--
adam
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