/*

File: document_window.c

Abstract:  Functions to create and manipulate document windows.

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*/

#include "document_window.h"

// All of our document windows contain an HITextView with this HIViewID

static HIViewID gTextViewID = { 'MTXT', 0 };

//---------------------------------------------------------------------

// Creates one of our simple document windows and returns a ref to it.

//

WindowRef MyCreateNewDocumentWindow(void)

{

    IBNibRef nib;

    WindowRef window = NULL;

    OSStatus status;

    // Create one of our special main document windows

    status = CreateNibReference(CFSTR("main"), &nib);

    require_noerr( status, CantGetNIBRef );

    status = CreateWindowFromNib(nib, CFSTR("MainDocumentWindow"), &window);

    require_noerr( status, CantCreateWindow );

    // Set its default options

    status = MySetTextViewOptions(GetTextViewFromWindow(window));

    check_noerr( status );

    // Make the window transparent

    status = MakeWindowTransparent(window);

    check_noerr( status );

    // Make the TextView partially transparent

    status = TextViewSetAlpha(GetTextViewFromWindow(window), 0.25);

    check_noerr( status );

    // Initialize the window title and proxy icon

    status = SetWindowTitleWithCFString(window, CFSTR("Untitled"));

    check_noerr( status );

    status = SetWindowProxyCreatorAndType(window, kUnknownType, kUnknownType, kOnSystemDisk);

    check_noerr( status );

    // Show the window

    ShowWindow(window);

    // Cleanup

CantGetViewRef:

CantCreateWindow:

    DisposeNibReference(nib);

CantGetNIBRef:

    return window;

}

//---------------------------------------------------------------------

// Sets the alpha of an HITextView to the specified value

//

OSStatus TextViewSetAlpha(HIViewRef textView, float alpha)

{

    CGColorRef prevColor, newColor;

    OSStatus status;

    status = HITextViewCopyBackgroundColor(textView, &prevColor);

    require_noerr( status, CantGetBackgroundColor );

    newColor = CGColorCreateCopyWithAlpha(prevColor, alpha);

    require( (newColor != NULL), CantCreateNewColor );

    status = HITextViewSetBackgroundColor(textView, newColor);

    check_noerr( status );

    CGColorRelease(newColor);

CantCreateNewColor:

    CGColorRelease(prevColor);

CantGetBackgroundColor:

    return status;

}

//---------------------------------------------------------------------

// Sets some default options in our main text view.

//

OSStatus MySetTextViewOptions(HIViewRef textView)

{

    TXNCommandEventSupportOptions options;

    TXNObject txnObj;

    OSStatus status;

    // We are setting options that must be set in the

    // underlying MLTE object, so get a reference to it

    txnObj = HITextViewGetTXNObject(textView);

    require( (txnObj != NULL), CantGetTXNObject );

    // Get the previous options

    status = TXNGetCommandEventSupport(txnObj, &options);

    require_noerr( status, CantGetCommandOptions );

    // Add the font panel support options

    options |= kTXNSupportFontCommandProcessing;

    options |= kTXNSupportFontCommandUpdating;

    // Add the spelling panel support options

    options |= kTXNSupportSpellCheckCommandProcessing;

    options |= kTXNSupportSpellCheckCommandUpdating;

    // Apply above changes to the object

    status = TXNSetCommandEventSupport(txnObj, options);

    require_noerr( status, CantSetCommandOptions );

CantSetCommandOptions:

CantGetCommandOptions:

CantGetTXNObject:

    return status;

}

//---------------------------------------------------------------------

// Returns the HITextView ref from one of our windows.

//

HIViewRef GetTextViewFromWindow(WindowRef window)

{

    HIViewRef textView = NULL;

    if( window != NULL )

        verify_noerr( HIViewFindByID(HIViewGetRoot(window), gTextViewID, &textView) );

    return textView;

}

//---------------------------------------------------------------------

// Sets up the window's title and proxy icon based on the given file.

//

void SetWindowTitleAndProxyFromCFURL(WindowRef window, CFURLRef file)

{

    CFStringRef title;

    FSRef fileAsFSRef;

    require( (CFURLGetFSRef(file, &fileAsFSRef) != false), CantGetFSRef );

    verify_noerr( HIWindowSetProxyFSRef(window, &fileAsFSRef) );

    title = CFURLCopyLastPathComponent(file);

    verify_noerr( SetWindowTitleWithCFString(window, title) );

    CFRelease(title);

CantGetFSRef:

    return;

}

//---------------------------------------------------------------------

// Gets a window's proxy file CFURL. Caller must release the CFURLRef.

//

CFURLRef GetWindowProxyFileCFURL(WindowRef window)

{

    FSRef fileAsFSRef;

    CFURLRef fileAsCFURL = NULL;

    OSStatus status;

    status = HIWindowGetProxyFSRef(window, &fileAsFSRef);

    if ( status == noErr ) // errWindowDoesNotHaveProxy could be special cased here

        fileAsCFURL = CFURLCreateFromFSRef(NULL, &fileAsFSRef);

    return fileAsCFURL;

}