apps-gorm/GormCustomClassInspector.m

/** <title>GormCustomClassInspector</title>

   <abstract>allow user to select custom classes</abstract>

   Copyright (C) 2002 Free Software Foundation, Inc.
   Author:  Gregory John Casamento <greg_casamento@yahoo.com>
   Date: September 2002

   This file is part of GNUstep.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; see the file COPYING.LIB.
   If not, write to the Free Software Foundation,
   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/

/* All Rights reserved */

#include <AppKit/AppKit.h>
#include "GormCustomClassInspector.h"
#include "GormPrivate.h"
#include "GormClassManager.h"
#include "GormDocument.h"
#include "GormPrivate.h"
#include "Gorm.h"

@implementation GormCustomClassInspector
+ (void) initialize
{
  if (self == [GormCustomClassInspector class])
    {
      // TBD
    }
}

- (id) init
{
  self = [super init];
  if (self != nil)
    {
      // initialize all member variables...
      _classManager = nil;
      _currentSelection = nil;
      _currentSelectionClassName = nil;
      _rowToSelect = 0;
      
      // load the gui...
      if (![NSBundle loadNibNamed: @"GormCustomClassInspector"
		     owner: self])
	{
	  NSLog(@"Could not open gorm GormCustomClassInspector");
	  return nil;
	}
      else
	{
	  [[NSNotificationCenter defaultCenter] 
	    addObserver: self
	    selector: @selector(handleNotification:)
	    name: IBSelectionChangedNotification
	    object: nil];
	}
    }
  return self;
}

- (void) dealloc
{
  [[NSNotificationCenter defaultCenter] removeObserver: self];
}

- (NSString *)_correctClassName: (NSString *)className
{
  NSString *prefix = nil, *substring = nil, *result = nil;

  // based on the name of the class set the class name...
  prefix = [className substringToIndex: 4];
  if([prefix isEqualToString: @"Gorm"])
    {
      substring = [className substringFromIndex: 4];
      ASSIGN(result, substring);
    }
  else
    {
      ASSIGN(result, className);
    }
  
  return result;
}

- (void) _setCurrentSelectionClassName: (id)anobject
{
  NSString *nameForObject = [_document nameForObject: anobject];
  NSString *className = [_classManager customClassForObject: nameForObject];
		     
  NSLog(@"name for object = %@, object = %@, className = %@",nameForObject, anobject, className);
  // if no entry, then use the name of the class
  if([className isEqualToString: @""] ||
     className == nil)
    {
      className = NSStringFromClass([anobject class]);
    }

  ASSIGN(_currentSelectionClassName, [self _correctClassName: className]);
  ASSIGN(_parentClassName, [self _correctClassName: NSStringFromClass([anobject class])]);
}

- (void) handleNotification: (NSNotification*)aNotification
{
  id editor = [aNotification object];
  NSArray *selections = [editor selection];
      
  if([selections count] == 1)
    {
      _document = [(Gorm *)NSApp activeDocument];
      _classManager = [(Gorm *)NSApp classManager];
      _currentSelection = [selections objectAtIndex: 0];

      NSDebugLog(@"Current selection %@", _currentSelection);
      [self _setCurrentSelectionClassName: _currentSelection];
      [browser reloadColumn: 0];

      // select the class...
      [browser selectRow: _rowToSelect inColumn: 0];
      [browser setNeedsDisplay: YES];
    }
  else
    {
      _currentSelection = nil;
      NSDebugLog(@"Invalid selection");
    }
}

- (void) awakeFromNib
{
  [browser setTarget: self];
  [browser setAction: @selector(select:)];
}

- (void) select: (id)sender
{
  NSCell *cell = [browser selectedCellInColumn: 0];
  NSString *stringValue = RETAIN([cell stringValue]);
  NSString *nameForObject = [_document nameForObject: _currentSelection];
  
  /* insert your code here */
  [_classManager setCustomClass: stringValue
		 forObject: nameForObject];
}

// Browser delegate
- (void)    browser: (NSBrowser *)sender 
createRowsForColumn: (int)column
	   inMatrix: (NSMatrix *)matrix
{
  if(_parentClassName != nil)
    {
      NSMutableArray  *classes = [NSMutableArray arrayWithObject: _parentClassName];
      NSEnumerator          *e = nil;
      NSString          *class = nil;
      NSBrowserCell      *cell = nil;
      int i = 0;
      
      // get a list of all of the classes allowed and the class to be shown.
      [classes addObjectsFromArray: [_classManager allCustomSubclassesOf: _parentClassName]];
      
      // enumerate through the classes...
      e = [classes objectEnumerator];
      while((class = [e nextObject]) != nil)
	{
	  if([class isEqualToString: _currentSelectionClassName])
	    {
	      _rowToSelect = i;
	    }
	  [matrix insertRow: i withCells: nil];
	  cell = [matrix cellAtRow: i column: 0];
	  [cell setLeaf: YES];
	  i++;
	  [cell setStringValue: class];
	}
    }
}

- (NSString*) browser: (NSBrowser*)sender 
	titleOfColumn: (int)column
{
  NSDebugLog(@"Delegate called");
  return @"Class";
}

- (void) browser: (NSBrowser *)sender 
 willDisplayCell: (id)cell 
	   atRow: (int)row 
	  column: (int)column
{
}

- (BOOL) browser: (NSBrowser *)sender 
   isColumnValid: (int)column
{
  return YES;
}
@end