#import <Cocoa/Cocoa.h>

#include "baselayer.h"

static id nsapp;

@interface StartupWinController : NSWindowController
{
	IBOutlet NSButton *alwaysShowButton;
	IBOutlet NSButton *fullscreenButton;
	IBOutlet NSTextView *messagesView;
	IBOutlet NSTabView *tabView;
	IBOutlet NSComboBox *videoModeCbox;
	
	IBOutlet NSButton *cancelButton;
	IBOutlet NSButton *startButton;
}

- (IBAction)alwaysShowClicked:(id)sender;
- (IBAction)fullscreenClicked:(id)sender;

- (IBAction)cancel:(id)sender;
- (IBAction)start:(id)sender;

- (void)setupRunMode;
- (void)setupMessagesMode;
- (void)putsMessage:(NSString *)str;
- (void)setTitle:(NSString *)str;
@end

@implementation StartupWinController

- (IBAction)alwaysShowClicked:(id)sender
{
}

- (IBAction)fullscreenClicked:(id)sender
{
	// XXX: recalculate the video modes list to take into account the fullscreen status
}

- (IBAction)cancel:(id)sender
{
	[nsapp abortModal];
}

- (IBAction)start:(id)sender
{
	// XXX: write the states of the form controls to their respective homes
	[nsapp stopModal];
}

- (void)setupRunMode
{
	// XXX: populate the lists and set everything up to represent the current options

	// enable all the controls on the Configuration page
	NSEnumerator *enumerator = [[[[tabView tabViewItemAtIndex:0] view] subviews] objectEnumerator];
	NSControl *control;
	while (control = [enumerator nextObject])
		[control setEnabled:true];
	
	[cancelButton setEnabled:true];
	[startButton setEnabled:true];

	[tabView selectTabViewItemAtIndex:0];
}

- (void)setupMessagesMode
{
	[tabView selectTabViewItemAtIndex:1];

	// disable all the controls on the Configuration page except "always show", so the
	// user can enable it if they want to while waiting for something else to happen
	NSEnumerator *enumerator = [[[[tabView tabViewItemAtIndex:0] view] subviews] objectEnumerator];
	NSControl *control;
	while (control = [enumerator nextObject]) {
		if (control == alwaysShowButton) continue;
		[control setEnabled:false];
	}

	[cancelButton setEnabled:false];
	[startButton setEnabled:false];
}

- (void)putsMessage:(NSString *)str
{
	NSRange end;
	NSTextStorage *text = [messagesView textStorage];
	BOOL shouldAutoScroll;

	shouldAutoScroll = ((int)NSMaxY([messagesView bounds]) == (int)NSMaxY([messagesView visibleRect]));

	end.location = [text length];
	end.length = 0;

	[text beginEditing];
	[messagesView replaceCharactersInRange:end withString:str];
	[text endEditing];
	
	if (shouldAutoScroll) {
		end.location = [text length];
		end.length = 0;
		[messagesView scrollRangeToVisible:end];
	}
}

- (void)setTitle:(NSString *)str
{
	[[self window] setTitle:str];
}

@end

static StartupWinController *startwin = nil;

int startwin_open(void)
{
    nsapp = [NSApplication sharedApplication];

	if (startwin != nil) return 1;
	
	startwin = [[StartupWinController alloc] initWithWindowNibName:@"startwin.editor"];
	if (startwin == nil) return -1;

	[startwin showWindow:nil];
	[startwin setupMessagesMode];

	return 0;
}

int startwin_close(void)
{
	if (startwin == nil) return 1;

	[startwin close];
	startwin = nil;

	return 0;
}

int startwin_puts(const char *s)
{
	NSString *ns;

	if (!s) return -1;
	if (startwin == nil) return 1;

	ns = [[NSString alloc] initWithCString:s];
	[startwin putsMessage:ns];
	[ns release];

	return 0;
}

int startwin_settitle(const char *s)
{
	NSString *ns;
	
	if (!s) return -1;
	if (startwin == nil) return 1;
	
	ns = [[NSString alloc] initWithCString:s];
	[startwin setTitle:ns];
	[ns release];

	return 0;
}

int startwin_idle(void *v)
{
	if (startwin) [[startwin window] displayIfNeeded];
	return 0;
}

int startwin_run(void)
{
	int retval;
	
	if (startwin == nil) return 0;
	
	[startwin setupRunMode];
	
	switch ([nsapp runModalForWindow:[startwin window]]) {
		case NSRunStoppedResponse: retval = 1; break;
		case NSRunAbortedResponse: retval = 0; break;
		default: retval = -1;
	}
	
	[startwin setupMessagesMode];
	
	return retval;
}