App crash after javascript called window closes
App crash after javascript called window closes
- Subject: App crash after javascript called window closes
- From: Alan Klein <email@hidden>
- Date: Tue, 2 Aug 2005 10:18:48 -0700 (PDT)
I have this simple web browser program that seems to
have a problem with javascript called windows. When I
close a window that was invoked by a javascript
command, my program crashes.
The program was originally a project I saw elsewhere
on the net, but I have made some changes to it. I did
remove most of my changes, as the problem exists at
the level of code that I have below.
Here is the code that I am using:
Here is my header:
#import <Cocoa/Cocoa.h>
#import <WebKit/WebKit.h>
#import <WebKit/WebFrame.h>
#import <WebKit/WebDataSource.h>
#import <WebKit/WebPolicyDelegate.h>
@interface MyDocument : NSDocument
{
IBOutlet id urlString;
IBOutlet WebView *webView;
}
-(void)setDefaultHomepage:(NSString*)homepage;
-(NSString *)getDefaultHomepage;
- (IBAction)connectURL:(id)sender;
@end
Here is the mydocument.m file:
#import "MyDocument.h"
static NSString *defaultHP
=@"http://lists.apple.com/mailman/listinfo/cocoa-dev";;
@implementation MyDocument
- (id)init
{
self = [super init];
if (self) {
// Add your subclass-specific initialization
here.
// If an error occurs here, send a [self
release] message and return nil.
}
return self;
}
-(NSString *)windowNibName
{
// Override returning the nib file name of the
document
// If you need to use a subclass of
NSWindowController or if your document supports
multiple NSWindowControllers, you should remove this
method and override -makeWindowControllers instead.
return @"MyDocument";
}
- (void)windowControllerDidLoadNib:(NSWindowController
*) aController
{
[super windowControllerDidLoadNib:aController];
// Add any code here that needs to be executed
once the windowController has loaded the document's
window.
[webView setUIDelegate:self];
[webView setGroupName:@"MyDocument"];
[urlString setStringValue:defaultHP];
[[webView mainFrame] loadRequest:
[NSURLRequest requestWithURL:
[NSURL URLWithString:defaultHP]]];
[webView setFrameLoadDelegate:self];
}
- (NSData *)dataRepresentationOfType:(NSString *)aType
{
// Insert code here to write your document from
the given data. You can also choose to override
-fileWrapperRepresentationOfType: or
-writeToFile:ofType: instead.
return nil;
}
- (BOOL)loadDataRepresentation:(NSData *)data
ofType:(NSString *)aType
{
// Insert code here to read your document from the
given data. You can also choose to override
-loadFileWrapperRepresentation:ofType: or
-readFromFile:ofType: instead.
return YES;
}
- (IBAction)connectURL:(id)sender
{
[urlString setStringValue:[sender stringValue]];
[[webView mainFrame] loadRequest:
[NSURLRequest requestWithURL:
[NSURL URLWithString:
[sender stringValue]]]];
}
- (WebView *)webView:(WebView *)sender
createWebViewWithRequest:
(NSURLRequest *)request
{
id myDocument = [
[NSDocumentController
sharedDocumentController]
openUntitledDocumentOfType:@"DocumentType"
display:YES];
[[[myDocument webView] mainFrame]
loadRequest:request];
return [myDocument webView];
}
- (void)webView:(WebView *)sender
didReceiveTitle:(NSString *)title forFrame:(WebFrame
*)frame
{
// Report feedback only for the main frame.
if (frame == [sender mainFrame]){
[[sender window] setTitle:title];
}
}
- (void)webViewShow:(WebView *)sender
{
id myDocument = [[NSDocumentController
sharedDocumentController]
documentForWindow:
[sender window]];
[myDocument showWindows];
}
- (void)webView:(WebView *)sender
didStartProvisionalLoadForFrame:
(WebFrame *)frame
{
//Add what to do as page begins to load.
// Only report feedback for the main frame.
if (frame == [sender mainFrame]){
NSString *url = [[[
[frame provisionalDataSource]
request] URL] absoluteString];
[urlString setStringValue:url];
}
}
-(id)webView{
return webView;
}
-(void)setDefaultHomepage:(NSString*)homepage{
defaultHP = homepage;
}
-(NSString *)getDefaultHomepage{
return defaultHP;
}
@end
Thanks for the help in advance.
--Alan
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