/*

     File: DropView.m 

 Abstract: Custom view used to receive file/folder drops from the Desktop. 

  Version: 1.1 

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 */

#import "DropView.h"

@implementation DropView

NSString *DropHasOccurred = @"DropHasOccurred"; // notification name for updating the dictionary controller

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

//  initWithFrame:frame

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

- (id)initWithFrame:(NSRect)frame

{

    self = [super initWithFrame:frame];

    if (self)

    {

        NSArray *draggedTypeArray = [NSArray arrayWithObjects:NSFilenamesPboardType, nil];

        [self registerForDraggedTypes:draggedTypeArray];

        backgroundColor = [NSColor controlHighlightColor];

        hilightColor = [[NSColor selectedControlColor] retain]; 

    }

    return self;

}

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

//  drawRect:rect

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

- (void)drawRect:(NSRect)rect

{

    [backgroundColor set];

    NSRectFill([self visibleRect]);

}

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

//  draggingEntered:sender

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

- (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender

{

    NSDragOperation result = NSDragOperationNone;

    NSPasteboard *pboard = [sender draggingPasteboard];

    NSArray *filenames = [pboard propertyListForType:NSFilenamesPboardType];

    if ([filenames count] == 1)

    {

        backgroundColor = hilightColor;

        [self setNeedsDisplay:YES]; // force hilite the drop area

        result = NSDragOperationCopy;

    }

    return result;

}

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

//  draggingExited:sender

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

-(void)draggingExited:(id <NSDraggingInfo>)sender

{

    backgroundColor = [NSColor controlHighlightColor];

    [self setNeedsDisplay:YES];

}

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

//  performDragOperation:sender

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

- (BOOL)performDragOperation:(id <NSDraggingInfo>)sender

{

    BOOL result = NO;

    NSPasteboard *pboard = [sender draggingPasteboard];

    NSArray *filenames = [pboard propertyListForType:NSFilenamesPboardType];

    if ([filenames count] == 1) // only allow dropping one object at a time

    {

        NSDictionary* fileAttrs = [[NSFileManager defaultManager] attributesOfItemAtPath:[filenames objectAtIndex:0] error:nil];

        // notify our parent window controller to update the dictionary controller with "fileInfo"

        NSDictionary* fileInfo = [NSDictionary dictionaryWithObjectsAndKeys:fileAttrs, @"info",

                                                                            [filenames objectAtIndex:0], @"path",

                                                                            nil];

        [[NSNotificationCenter defaultCenter] postNotificationName:DropHasOccurred object:self userInfo:fileInfo];

        result = YES;

    }

    // force-change our background color to normal

    backgroundColor = [NSColor controlHighlightColor];

    [self setNeedsDisplay:YES];

    return result;

}

@end