trunk/ImageSplitter/CRDropView.m

//
//  CRDropView.m
//  ImageSpliter
//
//  Created by hiroshi tomioka on 13/02/12.
//  Copyright (c) 2013年 hiroshi tomioka. All rights reserved.
//
//  画像ドロップの為のメインウィンドウ

#import "CRDropView.h"
#import <Foundation/Foundation.h>
#import "NSImage+data.h"

@implementation CRDropView

@synthesize _files;

- (id)initWithFrame:(NSRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code here.
                self._files = [NSMutableArray arrayWithCapacity:1];
    }
    
    return self;
}

- (void)awakeFromNib {
        self._files = [NSMutableArray arrayWithCapacity:1];
        [self registerForDraggedTypes:[NSArray arrayWithObjects:
                                                                           NSColorPboardType, NSFilenamesPboardType, nil]];

}

- (void)drawRect:(NSRect)dirtyRect
{
    // Drawing code here.
}


- (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender
{
    if ((NSDragOperationGeneric & [sender draggingSourceOperationMask])
                == NSDragOperationGeneric)
    {
        //this means that the sender is offering the type of operation we want
        //return that we want the NSDragOperationGeneric operation that they
                //are offering
        return NSDragOperationGeneric;
    }
    else
    {
        //since they aren't offering the type of operation we want, we have
                //to tell them we aren't interested
        return NSDragOperationNone;
    }
}

- (void)draggingExited:(id <NSDraggingInfo>)sender
{
    //we aren't particularily interested in this so we will do nothing
    //this is one of the methods that we do not have to implement
}

- (NSDragOperation)draggingUpdated:(id <NSDraggingInfo>)sender
{
    if ((NSDragOperationGeneric & [sender draggingSourceOperationMask])
                == NSDragOperationGeneric)
    {
        //this means that the sender is offering the type of operation we want
        //return that we want the NSDragOperationGeneric operation that they
                //are offering
        return NSDragOperationGeneric;
    }
    else
    {
        //since they aren't offering the type of operation we want, we have
                //to tell them we aren't interested
        return NSDragOperationNone;
    }
}


- (BOOL)performDragOperation:(id <NSDraggingInfo>)sender
{
    NSPasteboard *paste = [sender draggingPasteboard];
        //gets the dragging-specific pasteboard from the sender
    NSArray *types = [NSArray arrayWithObjects:NSTIFFPboardType,
                                          NSFilenamesPboardType, nil];
        //a list of types that we can accept
    NSString *desiredType = [paste availableTypeFromArray:types];
    NSData *carriedData = [paste dataForType:desiredType];
        
    if (nil == carriedData)
    {
        //the operation failed for some reason
        NSRunAlertPanel(@"Error", @"",
                                                nil, nil, nil);
        return NO;
    }
    else
    {
        if ([desiredType isEqualToString:NSFilenamesPboardType])
        {
            NSArray *fileArray =
                        [paste propertyListForType:@"NSFilenamesPboardType"];
                        //サブフォルダを含め、画像ファイルをNSArrayに追加
                        for (NSString *path in fileArray) {
                                BOOL isDirectory;
                                if ([[NSFileManager defaultManager] fileExistsAtPath:path isDirectory:&isDirectory]) {
                                        if (isDirectory) {
                                                NSArray* array = [[NSFileManager defaultManager] subpathsAtPath:path];
                                                array = [array sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)];
        
                                                for (NSString *filename in array) {
                                                        filename = [path stringByAppendingPathComponent:filename];
                                                        if ([NSImage isImageFile:filename]) {
                                                                NSLog(@"%@", filename);
                                                                [self._files addObject:filename];
                                                        }
                                                }
                                        } else {
                                                if ([NSImage isImageFile:path]) {
                                                        [self._files addObject:path];
                                                }
                                        }
        
                                }
                        }
                        
                        //ファイルがドロップされた事への通知、これでTableViewが更新される
                        NSDictionary* dic = [NSDictionary dictionaryWithObjectsAndKeys:self._files, @"files", nil];
                        NSNotification* notification = [NSNotification notificationWithName:@"files droped"
                                                                                                                                                 object:self
                                                                                                                                           userInfo:dic];
                        [[NSNotificationCenter defaultCenter] postNotification:notification];
                        
        }
        else
        {
            //this can't happen
            NSAssert(NO, @"This can't happen");
            return NO;
        }
    }
    return YES;
}


@end