/**
    DefaultColumnProvider.m
 
    Author: Matt Rice <ratmice@gmail.com>
    Date: Apr 2005, 2006

    This file is part of DBModeler.
    
    <license>
    DBModeler is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    DBModeler 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with DBModeler; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
    </license>
**/


#include "DefaultColumnProvider.h"
#include "ModelerEntityEditor.h"

#include <EOModeler/EOModelerApp.h>
#include <EOInterface/EOColumnAssociation.h>
#include <EOAccess/EOAttribute.h>
#include <EOAccess/EOEntity.h>
#include <EOAccess/EORelationship.h>

#ifdef NeXT_GUI_LIBRARY
#include <AppKit/AppKit.h>
#else
#include <AppKit/NSTableColumn.h>
#include <AppKit/NSTableHeaderCell.h>
#include <AppKit/NSCell.h>
#include <AppKit/NSTextFieldCell.h>
#include <AppKit/NSButtonCell.h>
#include <AppKit/NSTableView.h>
#include <AppKit/NSImage.h>
#endif

#ifdef NeXT_Foundation_LIBRARY
#include <Foundation/Foundation.h>
#else
#include <Foundation/NSDictionary.h>
#endif

#include <GNUstepBase/GNUstep.h>

#define DICTSIZE(dict) (sizeof(dict) / sizeof(dict[0]))

static DefaultColumnProvider *_sharedDefaultColumnProvider;
static NSMutableDictionary *_aspectsAndKeys;

NSMutableArray *DefaultEntityColumns;
NSMutableArray *DefaultAttributeColumns;
NSMutableArray *DefaultRelationshipColumns;

struct column_info {
  NSString *key;
  NSString *name;
  BOOL isDefault;
};

static struct column_info attribute_columns[] = {
        {@"isPrimaryKey",     @"Primary key",      YES},
        {@"isClassProperty",  @"Class property",   YES},
        {@"allowNull",        @"Allows null",      YES}, 
        {@"isUsedForLocking", @"Locking",          YES},
        {@"name",             @"Name",             YES},
        {@"columnName",       @"Column name",      YES},
        {@"valueClassName",   @"Value class name", YES},
        {@"externalType",     @"External Type",    YES},
        {@"definition",       @"Definition",        NO},
        {@"precision",        @"Precision",         NO},
        {@"readFormat",       @"Read format",       NO},
        {@"scale",            @"Scale",             NO}, 
        {@"valueType",        @"Value type",        NO},
        {@"width",            @"Width",            YES}, 
        {@"writeFormat",      @"Write format",      NO} 
};
  
static struct column_info relationship_columns[]= {
        {@"isClassProperty",        @"Class property",     YES},
        {@"definition",             @"Definition",          NO}, 
        {@"name",                   @"Name",               YES},
        {@"destinationEntity.name", @"Destination Entity", YES}        
        
};

static struct column_info entity_columns[] = {
        {@"name",              @"Name",           YES},
        {@"className",         @"Class name",     YES},
        {@"externalName",      @"External name",  YES},
        {@"externalQuery",     @"External query",  NO},
        {@"parentEntity.name", @"Parent",          NO}

};

@implementation DefaultColumnProvider
/* function to create a NSDictionary out of the c arrays..
 * which looks like
 { 
   Class = { 
             columnName1 = "aspectKey1";
             columnName2 = "aspectKey2";
           };
           
   Class2 = {
              otherColumnName = "otherAspectKey";
            };
 }
 */
void registerColumnsForClass(struct column_info columns[], int count, Class aClass,NSMutableArray *defaultColumnsArray)
{
  id *objects;
  id *keys;
  int i;
  size_t size;
  NSDictionary *tmp;
  size = (count * sizeof(id));

  objects = (id *)NSZoneMalloc([_sharedDefaultColumnProvider zone], size);
  keys = (id *)NSZoneMalloc([_sharedDefaultColumnProvider zone], size);

  for (i = 0; i < count; i++)
     {
       objects[i] = columns[i].key;
       keys[i] = columns[i].name;
       if (columns[i].isDefault == YES)
         {
           [defaultColumnsArray addObject:keys[i]]; 
         }
     }
  tmp = [NSDictionary dictionaryWithObjects:objects
                                      forKeys:keys
                                      count:count];
  [EOMApp registerColumnNames: [tmp allKeys]
                       forClass: aClass
                     provider:_sharedDefaultColumnProvider];
  NSZoneFree([_sharedDefaultColumnProvider zone], objects);
  NSZoneFree([_sharedDefaultColumnProvider zone], keys);
  
  [_aspectsAndKeys setObject: tmp 
                      forKey: aClass];
}

+ (void)initialize
{
  
  DefaultEntityColumns = [[NSMutableArray alloc] init];
  DefaultAttributeColumns = [[NSMutableArray alloc] init];
  DefaultRelationshipColumns = [[NSMutableArray alloc] init];
  
  _sharedDefaultColumnProvider = [[self alloc] init];
  _aspectsAndKeys = [[NSMutableDictionary alloc] init]; 
  registerColumnsForClass(attribute_columns,
                            DICTSIZE(attribute_columns),
                          [EOAttribute class],
                          DefaultAttributeColumns); 
  registerColumnsForClass(entity_columns,
                            DICTSIZE(entity_columns),
                          [EOEntity class],
                          DefaultEntityColumns);
  registerColumnsForClass(relationship_columns,
                            DICTSIZE(relationship_columns),
                          [EORelationship class],
                          DefaultRelationshipColumns);
}

- (void) setupTitleForColumn:(NSTableColumn *)tc named:(NSString *)name
{
  NSTableHeaderCell *headerCell = (id)[tc headerCell];
  if ([name isEqual:@"Primary key"])
    {
      NSImage *img = [NSImage imageNamed:@"Key_Header"];
      [headerCell setImage:img];
    }
  else if ([name isEqual:@"Class property"])
    [headerCell setImage:[NSImage imageNamed:@"ClassProperty_Header"]];
  else if ([name isEqual:@"Locking"])
    [headerCell setImage:[NSImage imageNamed:@"Locking_Header"]];
  else if ([name isEqual:@"Allows null"])
    [headerCell setImage:[NSImage imageNamed:@"AllowsNull_Header"]];
  else if ([name isEqual:@"Name"])
    {
      [tc setWidth:100.0];
      [headerCell setStringValue:name];
      return;
    }
  else
    {
      [headerCell setStringValue:name];
    }
  [tc sizeToFit];
}

- (NSCell *)cellForColumnNamed:(NSString *)name
{

  /* TODO need a switch button for "Locking" and "Allows null" */
  if ([name isEqual:@"Primary key"])
    {
      NSButtonCell *cell = [[NSButtonCell alloc] initImageCell:nil];
      
      [cell setButtonType:NSSwitchButton];
      [cell setImagePosition:NSImageOnly];
      [cell setBordered:NO];
      [cell setBezeled:NO];
      [cell setAlternateImage:[NSImage imageNamed:@"Key_On"]];
      [cell setControlSize: NSSmallControlSize];
      [cell setEditable:NO];
      return AUTORELEASE(cell);
    }
  else if ([name isEqual:@"Class property"])
    {
      NSButtonCell *cell = [[NSButtonCell alloc] initImageCell:nil];

      [cell setButtonType:NSSwitchButton];
      [cell setImagePosition:NSImageOnly];
      [cell setBordered:NO];
      [cell setBezeled:NO];
      [cell setAlternateImage:[NSImage imageNamed:@"ClassProperty_On"]];
      [cell setControlSize: NSSmallControlSize];
      [cell setEditable:NO];
      return AUTORELEASE(cell);
    }
  else if ([name isEqual:@"Locking"])
    {
      NSButtonCell *cell = [[NSButtonCell alloc] initImageCell:nil];

      [cell setButtonType:NSSwitchButton];
      [cell setImagePosition:NSImageOnly];
      [cell setBordered:NO];
      [cell setBezeled:NO];
      [cell setAlternateImage:[NSImage imageNamed:@"Locking_On"]];
      [cell setControlSize: NSSmallControlSize];
      [cell setEditable:NO];
      return AUTORELEASE(cell);
    }
  else if ([name isEqual:@"Allows null"])
    {
      NSButtonCell *cell = [[NSButtonCell alloc] initImageCell:nil];

      [cell setButtonType:NSSwitchButton];
      [cell setImagePosition:NSImageOnly];
      [cell setBordered:NO];
      [cell setBezeled:NO];
      [cell setAlternateImage:[NSImage imageNamed:@"AllowsNull_On"]];
      [cell setControlSize: NSSmallControlSize];
      [cell setEditable:NO];
      return AUTORELEASE(cell);
    }
  else
    {
      NSTextFieldCell *cell = [[NSTextFieldCell alloc] init];
      [cell setEditable:YES];
      return AUTORELEASE(cell);
    }
}

- (void)initColumn:(NSTableColumn *)tc
             class:(Class)class 
              name:(NSString *)columnName 
      displayGroup:(EODisplayGroup *)displayGroup 
          document:(EOModelerDocument *)doc
{
    EOColumnAssociation *association;
    NSCell         *cell;
    NSString  *aspectKey;
    NSString     *aspect;

    aspectKey = [[_aspectsAndKeys objectForKey:class] objectForKey:columnName];
    aspect = @"value";
    association = [[EOColumnAssociation alloc] initWithObject:tc];
    cell = [self cellForColumnNamed:columnName];
    [tc setEditable: [cell isEditable]];
    [tc setDataCell:cell];
    [self setupTitleForColumn:tc named:columnName];
    [association bindAspect:aspect displayGroup:displayGroup key:aspectKey];
    [association establishConnection];
    [association release];
}

@end