QTKitPlayerAppDelegate.m

/*
    File:       QTKitPlayerAppDelegate.h
 
    Description: Application Delegate of the QTKitPlayer
                 Is responsible for validating items in the menu
                 and performing certain actions in the menu
                 
    Originally introduced at WWDC 2004 at
                Session 214, "Programming QuickTime with Cocoa." 
                Sample code is explained in detail in 
                "QTKit Programming Guide" documentation.
 
 
    Copyright:   © Copyright 2004, 2005 Apple Computer, Inc.
                 All rights reserved.
 
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*/
 
 
#import "QTKit/QTKit.h"
#import "QTKitPlayerAppDelegate.h"
#import "MovieDocument.h"
#import "PopUpTableColumn.h"
 
enum
{
    kQTKitPlayerOpenAsURL = 0,
    kQTKitPlayerOpenAsData
  
};
 
@implementation QTKitPlayerAppDelegate
 
#pragma mark --- NSMenu validation protocol ---
- (BOOL)validateMenuItem:(NSMenuItem *)menuItem
{
    BOOL    valid = NO;
    SEL     action;
 
    // init
    action = [menuItem action];
 
    // validate
    if (action == @selector(doOpenURL:))
        valid = YES;
    else if (action == @selector(doOpenURLData:))
        valid = YES;
        // If there is a document, validate the "Audio Extraction" menu item
    else if (action == @selector(doShowAudioInfo:))
        valid = [[NSDocumentController sharedDocumentController] currentDocument] != nil ? YES : NO;
    else
        valid = [[NSDocumentController sharedDocumentController] validateMenuItem:menuItem];
 
    return valid;
}
 
#pragma mark --- OpenURLPanel delegates ---
- (void)openURLPanelDidEnd:(OpenURLPanel *)openURLPanel returnCode:(int)returnCode contextInfo:(void *)contextInfo
{
    BOOL closePanel = YES;
 
    // create the movie document
    if (returnCode == NSOKButton)
        closePanel = [self createMovieDocumentWithURL:[openURLPanel url] asData:((long)contextInfo == kQTKitPlayerOpenAsData)];
 
    if (closePanel)
        [openURLPanel close];
}
 
#pragma mark --- actions ---
 
- (IBAction)doOpenURL:(id)sender
{
    [[OpenURLPanel openURLPanel] beginSheetWithWindow:nil delegate:self didEndSelector:@selector(openURLPanelDidEnd:returnCode:contextInfo:) contextInfo:((void *)kQTKitPlayerOpenAsURL)];
}
 
- (IBAction)doOpenURLData:(id)sender
{
    [[OpenURLPanel openURLPanel] beginSheetWithWindow:nil delegate:self didEndSelector:@selector(openURLPanelDidEnd:returnCode:contextInfo:) contextInfo:((void *)kQTKitPlayerOpenAsData)];
}
 
// Show the audio routing panel
- (IBAction) doShowAudioInfo:(id)sender
{
    NSDocument      *document;
    
    // Get the current document (if current not found, then the first) document
    document = [[NSDocumentController sharedDocumentController] currentDocument];
    if (document == nil)
    {
        NSArray *docs = [[NSDocumentController sharedDocumentController] documents];
        if ([docs count] != 0)
        {
            document = [docs objectAtIndex:0];
        }
    }
    // Create an instace of the audio panel if we don't have one already
    // Ask the panel to show itself
    if (document != nil)
    {
        MovieDocument   *movieDoc = (MovieDocument*) document;
 
        if ([movieDoc audioPropInfo] == nil)
        {
            [movieDoc setAudioPropInfo:[[AudioPropInfo audioPropInfo] autorelease]];
            [[movieDoc audioPropInfo] setMovie:[movieDoc movie] fileName:[movieDoc fileName]];
        }
        [[movieDoc audioPropInfo] showPanel];
    }
}
 
 
#pragma mark --- methods ---
- (BOOL)createMovieDocumentWithURL:(NSURL *)url asData:(BOOL)asData
{
    NSDocument              *movieDocument = nil;
    NSDocumentController    *documentController;
    BOOL                    success = YES;
 
    // init
    documentController = [NSDocumentController sharedDocumentController];
 
    // try to create the document from the URL
    if (url)
    {
        if (asData)
            movieDocument = [documentController makeDocumentWithContentsOfURL:url ofType:@"MovieDocumentData"];
        else
            movieDocument = [documentController makeDocumentWithContentsOfURL:url ofType:@"MovieDocument"];
    }
 
    // add the document
    if (movieDocument)
    {
        [documentController addDocument:movieDocument];
 
        // setup
        [movieDocument makeWindowControllers];
        [movieDocument updateChangeCount:NSChangeCleared];
        [movieDocument showWindows];
    }
    else
    {
        NSRunAlertPanel(@"Invalid movie", @"The url is not a valid movie.", nil, nil, nil);
        success = NO;
    }
 
    return success;
}
 
#pragma mark --- delegates ---
 
// don't want an untitled document opened upon program launch
// so return NO here
- (BOOL)applicationShouldOpenUntitledFile:(NSApplication *)sender 
{ 
    return NO; 
}
 
@end