Question

我有一个Safari浏览器插件，在其中，我想打开一个NSWindow来显示版权说明。当对话框中的Ok按钮关闭对话框的窗口，并且工作正常时，当我点击左上角的红色关闭窗口“x”时，它也会关闭窗口，但它是父窗口（整个浏览器选项卡，我让插件运行），保持禁用状态，好像某个模态窗口仍在某处打开。

我甚至试图在窗口关闭通知中附加一个新的选择器，它会运行与Ok按钮相同的代码，但仍然无法正常工作。

以下是代码的相关部分：

- (void) closeBox
{
    // called when the Ok button pressed
    [NSApp abortModal];

}

- (void)closeClicked:(NSNotification *)notification
{
    // called when the close window 'x' button pressed
    NSLog(@"Closed");
    [NSApp abortModal];
}


- (void) openBox
{
    NSRect frame = NSMakeRect(0, 0, 300, 250);
     mwin  = [[[NSWindow alloc] initWithContentRect:frame
                                     styleMask:NSClosableWindowMask |NSTitledWindowMask
                                       backing:NSBackingStoreBuffered
                                         defer:NO] autorelease];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(closeClicked:)
                                             name:NSWindowWillCloseNotification
                                           object:mwin];
    NSButton * bn;
    bn = [[[NSButton alloc] initWithFrame:NSMakeRect(10, 10, 100, 20) ] autorelease];

    [bn setButtonType:NSMomentaryPushInButton];
    [bn setTitle:@"Ok"];
    [bn setTarget:self];
    [bn setAction:@selector(closeBox)];

    [[mwin contentView] addSubview:bn];

    [NSApp runModalForWindow:mwin];   
}

Answer 1

我修改了你的代码，如下所示： -

- (void) closeBox
{
    // called when the Ok button pressed
  //Commented this line 
 // [NSApp abortModal];

    [mwin performClose:mwin];// Modified this line 


}

   //Modified below notification just comment the parameter
    - (void)closeClicked/*:(NSNotification *)notification*/
    {

    [NSApp abortModal];

}


- (void) openBox
{
    NSRect frame = NSMakeRect(0, 0, 300, 250);
    mwin  = [[[[NSWindow alloc] initWithContentRect:frame
                                         styleMask:NSClosableWindowMask |NSTitledWindowMask
                                           backing:NSBackingStoreBuffered
                                            defer:NO]retain]autorelease];
  //Modified notification below    

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(closeClicked)
                                                 name:NSWindowWillCloseNotification
                                               object:nil];
    NSButton * bn;
    bn = [[[NSButton alloc] initWithFrame:NSMakeRect(10, 10, 100, 20) ] autorelease];

    [bn setButtonType:NSMomentaryPushInButton];
    [bn setTitle:@"Ok"];
    [bn setTarget:self];
    [bn setAction:@selector(closeBox)];

    [[mwin contentView] addSubview:bn];

    [NSApp runModalForWindow:mwin];   
}

Answer 2

经过几个小时的谷歌搜索，我发现其他人有类似的问题，解决方案很简单：窗口对象由NSNotificationCenter的观察者保留。我所要做的就是删除观察者：

- (void) closeClicked:(NSNotification *)notification
{

    [[NSNotificationCenter defaultCenter] removeObserver:self];
    [NSApp abortModal];

    NSLog(@"Closed");

}

现在它正常运作。

NSClosableWindowMask对话框表现奇怪

2 个答案: