I did a solution like this
-(NSDictionary *)pListWithWebElements{
if(_exporter == nil){
_exporter = [[XWSC2WExporter alloc] init];
}
NSString * htmlString = [_exporter
generateExportedHTMLFromLayouts:_layoutsArray];
if(_webController == nil){
_webController = [[XWSPreviewWebController alloc]
initWithWindowNibName:@"XWSPreviewWeb"];
[_webController set_parentController:self];
}
[_webController showWindow:self];
[_webController set_htmlString:htmlString];
flagLoad = NO;
while ( !flagLoad && [[ NSRunLoop currentRunLoop ]
runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]]){
NSLog(@"WAITING");
}
return pListWithWebElements;
}
#pragma mark LoadFrameDelegate.
-(void)webView:(WebView *)sender didFinishLoadForFrame:(WebFrame *)frame{
WebArchive * wa = [[frame dataSource] webArchive];
NSData * data = [wa data];
// uses toll-free bridging for data into CFDataRef and CFPropertyList
into NSDictionary
CFPropertyListRef plist =
CFPropertyListCreateFromXMLData(kCFAllocatorDefault, (CFDataRef)data,
kCFPropertyListMutableContainersAndLeaves,
NULL);
// we check if it is the correct type and only return it if it is
if ([(id)plist isKindOfClass:[NSDictionary class]])
{
[self setPListWithWebElements:[(NSDictionary *)plist
autorelease]];
}
else
{
// clean up ref
CFRelease(plist);
}
flagLoad = YES;
}
I duno if its the best solution but it works.. Im open to hear other
approaches...
thanks
Gustavo
On Jan 26, 2010, at 12:56 PM, Gustavo Pizano wrote:
> Hello all.
> I have this situation:
> I have a WebView which mainFrame Im loading form a NSString, then Im
> implementing the delegate :
>
> -(void)webView:(WebView *)sender didFinishLoadForFrame:(WebFrame *)frame;
>
> to check when the frame finish loading I can generate a pList to return to
> the caller. BUT this method its called only when the frame did load, as it
> says., and Im returning the dicitonary before this method its even called.
>
> this is what I have
>
> -(NSDictionary *)pListWithWebElements{
> if(_exporter == nil){
> _exporter = [[XWSC2WExporter alloc] init];
> }
>
> NSString * htmlString = [_exporter
> generateExportedHTMLFromLayouts:_layoutsArray];
> if(_webController == nil){
> _webController = [[XWSPreviewWebController alloc]
> initWithWindowNibName:@"XWSPreviewWeb"];
> [_webController set_parentController:self];
> }
> [_webController showWindow:self];
> [_webController set_htmlString:htmlString];
>
> return pListWithWebElements;
> }
>
> #pragma mark LoadFrameDelegate.
> -(void)webView:(WebView *)sender didFinishLoadForFrame:(WebFrame *)frame{
> WebArchive * wa = [[frame dataSource] webArchive];
> NSData * data = [wa data];
> // uses toll-free bridging for data into CFDataRef and CFPropertyList
> into NSDictionary
> CFPropertyListRef plist =
> CFPropertyListCreateFromXMLData(kCFAllocatorDefault, (CFDataRef)data,
>
>
> kCFPropertyListMutableContainersAndLeaves,
>
> NULL);
> // we check if it is the correct type and only return it if it is
> if ([(id)plist isKindOfClass:[NSDictionary class]])
> {
> [self setPListWithWebElements:[(NSDictionary *)plist
> autorelease]];
> }
> else
> {
> // clean up ref
> CFRelease(plist);
> }
>
> }
>
> so form the first methohd when I reach the return statement, the ivar its nil
> because it hasn't been initialized by the webframeload delegate.
>
> What do I need to do to return the ivar initialized? this is my first time
> encounter with a multithreading problem, Im totaly new to this topic, but I
> undertand that I must somehow wait for one thread to finish to be able to
> return the data on the main thread... am I wrong?
>
> Also I dunno if this shall be here or in WebKit so please if you feel it
> shouldn't be here let me know and I post it in the webKit dev List
>
> Thanks a lot
>
> Regards
>
> Gustavo Pizano
>
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