[Cocoa] two methods to modify nsdocument title

Two Methods for modifying nsdocument title

Luo chaohui (http://www.cnblogs.com/kesalin)

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Nsdocument does not have the settitle method to set the title, but there are two ways to set the display name of the document:

First, nsdocument has a displayname method. The default implementation of this method is to display the name of the last file associated with the document (no suffix is displayed). If there is no file associated with it, "Untitled" is displayed. We can modify the implementation of this method and return the name to be displayed. The following implementation shows the title of the window referred to by the first windowcontroller whenCompositionFile display name.

-(Nsstring *) displayname
{
Nsstring * doctitle = @ "Untitled ";
Nsarray * windowcontrollers = [self windowcontrollers];

If ([windowcontrollers count]> 0)
{
Nswindowcontroller * controller = [windowcontrollers objectatindex: 0];
Nswindow * window = [controller window];
Doctitle = [window title];
}

Return doctitle;
}

 

Second, it is better to write the nswindowcontroller subclass and overwrite-[nswindowcontroller windowtitlefordocumentdisplayname:].