MDItemRef/Controller.m

/*
        File:           Controller.m
 
        Version:        1.0
 
        Disclaimer:     IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.
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                        please do not use, install, modify or redistribute this Apple software.
 
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                        to these terms, Apple grants you a personal, non-exclusive license, under Apple's
                        copyrights in this original Apple software (the "Apple Software"), to use,
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                        the Apple Software in its entirety and without modifications, you must retain
                        this notice and the following text and disclaimers in all such redistributions of
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                        Apple Computer, Inc. may be used to endorse or promote products derived from the
                        Apple Software without specific prior written permission from Apple.  Except as
                        expressly stated in this notice, no other rights or licenses, express or implied,
                        are granted by Apple herein, including but not limited to any patent rights that
                        may be infringed by your derivative works or by other works in which the Apple
                        Software may be incorporated.
 
                        The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO
                        WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
                        WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                        PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
                        COMBINATION WITH YOUR PRODUCTS.
 
                        IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
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        Copyright 2005 Apple Computer, Inc., All Rights Reserved
 */
 
#import "Controller.h"
 
@implementation Controller
- init
{
    [super init];
        /* Register for Drag Received notifications from the DragView window */
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(fileDropped:) name:@"Drag Recieved" object:nil];
 
    return self;
}
 
- (void)dealloc
{
    [[NSNotificationCenter defaultCenter] removeObserver:self];
    if (inspectedRef){
        CFRelease(inspectedRef);
    }
    if (inspectedRefAttributeNames){
        CFRelease(inspectedRefAttributeNames);
    }
    if (inspectedRefAttributeValues){
        CFRelease(inspectedRefAttributeValues);
    }
    [super dealloc];
}
 
/* File dropped on to the window */
- (void)fileDropped:(NSNotification *)notification
{
    NSDictionary *userInfo;
    NSArray      *paths;
    NSString     *path;
 
    userInfo = [notification userInfo];
 
    paths = [userInfo objectForKey:@"Paths"];
    path = [paths objectAtIndex:0];
    [textField setStringValue:path];
    inspectedRef = MDItemCreate(kCFAllocatorDefault,(CFStringRef)path);
    if (inspectedRef){
        inspectedRefAttributeNames = MDItemCopyAttributeNames(inspectedRef);
        inspectedRefAttributeValues = MDItemCopyAttributes(inspectedRef,inspectedRefAttributeNames);;
    }
    [tableView reloadData];
 
}
 
/* NSTableDataSource methods */
- (int)numberOfRowsInTableView:(NSTableView *)tableView
{
    return inspectedRefAttributeNames ? CFArrayGetCount(inspectedRefAttributeNames) : 0;
}
 
- (id)tableView:(NSTableView *)tableView objectValueForTableColumn:(NSTableColumn *)tableColumn row:(int)row
{
    id               value;
    NSMutableString *formattedValue;
    CFStringRef      attributeName;
 
    attributeName = CFArrayGetValueAtIndex(inspectedRefAttributeNames,row);
 
    if ([[tableColumn identifier] isEqualToString:@"Property"]){
        value = (id)MDSchemaCopyDisplayNameForAttribute(attributeName);
        if ([(NSString *)value length]){
            return [(id)value autorelease];
        }else{
            return attributeName;
        }
 
    }else{
        value = (id)CFDictionaryGetValue(inspectedRefAttributeValues,attributeName);
 
        if ([value respondsToSelector: @selector(descriptionInStringsFileFormat)]){
            formattedValue = [[value descriptionInStringsFileFormat] mutableCopy];
        }else{
            formattedValue = [[value description] mutableCopy];
        }
            /* remove \t \r & \n for nice printing */
        [formattedValue replaceOccurrencesOfString:@"\t" withString:@"" options:0 range:NSMakeRange(0,[formattedValue length])];
        [formattedValue replaceOccurrencesOfString:@"\r" withString:@"" options:0 range:NSMakeRange(0,[formattedValue length])];
        [formattedValue replaceOccurrencesOfString:@"\n" withString:@"" options:0 range:NSMakeRange(0,[formattedValue length])];
 
        return [formattedValue autorelease];
    }
}
 
@end