apps-gorm/GormCore/GormCustomView.m

/* GormCustomView - Visual representation of a custom view placeholder
 *
 * Copyright (C) 2001 Free Software Foundation, Inc.
 *
 * Author:	Adam Fedor <fedor@gnu.org>
 * Date:	2001
 * 
 * This file is part of GNUstep.
 * 
 * This program 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.
 * 
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111 USA.
 */

#include <GormCore/GormCustomView.h>
#include <GormCore/GormPrivate.h>
#include <GormCore/GormOpenGLView.h>

#include <AppKit/NSColor.h>
#include <AppKit/NSGraphics.h>
#include <AppKit/NSFont.h>
#include <AppKit/NSNibLoading.h>

#include <GNUstepGUI/GSGormLoading.h>
#include <GNUstepGUI/GSNibLoading.h>

@class GSCustomView;

@interface CustomView : NSView
@end

@implementation CustomView
- (id) initWithFrame: (NSRect)frame
{
  if((self = [super initWithFrame: frame]) != nil)
    {
      // Replace the CustomView with an NSView of the same dimensions.
      self = (id)[[NSView alloc] initWithFrame: frame];
    }
  return self;
}
@end

@implementation GormCustomView 

- (id)initWithFrame:(NSRect)frameRect
{
  self = [super initWithFrame: frameRect];
  if(self != nil)
    {
      [self setBackgroundColor: [NSColor darkGrayColor]];
      [self setTextColor: [NSColor whiteColor]];
      [self setDrawsBackground: YES];
      [self setAlignment: NSCenterTextAlignment];
      [self setFont: [NSFont boldSystemFontOfSize: 0]];
      [self setEditable: NO];
      [self setSelectable: NO];
      [self setClassName: @"CustomView"];
    }
  return self;
}

- (void) dealloc
{
  RELEASE(className);
  [super dealloc];
}

- (NSString*) inspectorClassName
{
  return @"GormFilesOwnerInspector";
}

- (NSString*) classInspectorClassName
{
  return @"GormFilesOwnerInspector";
}

- (void) setClassName: (NSString *)aName
{
  ASSIGN(className, aName);
  [self setStringValue: aName];
}

- (NSString *) className
{
  return className;
}

- (Class) bestPossibleSuperClass
{
  Class cls = [NSView class];
  GormClassManager *classManager = [(id<Gorm>)NSApp classManager];

  if([classManager isSuperclass: @"NSView" linkedToClass: className])
    {
      NSString *superClass = [classManager nonCustomSuperClassOf: className];

      // get the superclass if one exists...
      if(superClass != nil)
	{
	  cls = NSClassFromString(superClass);
	  if(cls == nil)
	    {
	      cls = [NSView class];
	    }
	}
    }

  return cls;
}

/*
 * This needs to be coded like a GSNibItem. How do we make sure this
 * tracks changes in GSNibItem coding?
 */
- (void) encodeWithCoder: (NSCoder*)aCoder
{
  if([aCoder allowsKeyedCoding])
    {
      GormClassManager *classManager = [(id<Gorm>)NSApp classManager];
      NSString *extension = nil;
      
      ASSIGNCOPY(extension,[classManager nonCustomSuperClassOf: className]);
      
      [aCoder encodeObject: className forKey: @"NSClassName"];
      [aCoder encodeRect: [self frame] forKey: @"NSFrame"];
      
      if(extension != nil)
	{
	  [aCoder encodeObject: extension forKey: @"NSExtension"];
	}
      
      if([self nextResponder] != nil)
	{
	  [aCoder encodeObject: [self nextResponder] forKey: @"NSNextResponder"];
	}
      
      if([self superview] != nil)
	{
	  [aCoder encodeObject: [self superview] forKey: @"NSSuperview"];
	}
      
      RELEASE(extension);
    }
  else
    {
      [aCoder encodeObject: [self stringValue]];
      [aCoder encodeRect: _frame];
      [aCoder encodeValueOfObjCType: @encode(unsigned int) 
	      at: &_autoresizingMask];
    }
}

- (id) initWithCoder: (NSCoder*)aCoder
{
  if([aCoder allowsKeyedCoding])
    {
      NSCustomView *customView = [[NSCustomView alloc] initWithCoder: aCoder];
      NSArray *subviews = [customView subviews];
      
      // if the custom view has subviews....
      if(subviews != nil && [subviews count] > 0)
	{
	  Class cls = [self bestPossibleSuperClass];
	  id replacementView = [[cls alloc] initWithFrame: [customView frame]];
	  NSEnumerator *en = [[customView subviews] objectEnumerator];
	  id v = nil;

	  [replacementView setAutoresizingMask: [customView autoresizingMask]];
	  while((v = [en nextObject]) != nil)
	    {
	      [replacementView addSubview: v];
	    }	  

	  return replacementView;
	}
      else
	{
	  [self initWithFrame: [customView frame]];
	  _autoresizingMask = [customView autoresizingMask];
	}

      // get the classname...
      [self setClassName: [customView className]];
      // _super_view = [customView superview];
      // _window = [customView window];

      RELEASE(customView);

      return self;
    }
  else
    {
      NSInteger version = [aCoder versionForClassName: 
			      NSStringFromClass([GSCustomView class])];
      
      if (version == 1)
	{
	  NSString *string;
	  // do not decode super. We need to maintain mapping to NibItems
	  string = [aCoder decodeObject];
	  _frame = [aCoder decodeRect];
	  [self initWithFrame: _frame];
	  [aCoder decodeValueOfObjCType: @encode(unsigned int) 
		  at: &_autoresizingMask];
	  [self setClassName: string];
	  return self;
	}
      else if (version == 0)
	{
	  NSString *string;
	  // do not decode super. We need to maintain mapping to NibItems
	  string = [aCoder decodeObject];
	  _frame = [aCoder decodeRect];
	  
	  [self initWithFrame: _frame];
	  [self setClassName: string];
	  return self;
	}
      else
	{
	  NSLog(@"no initWithCoder for version");
	  RELEASE(self);
	  return nil;
	}
    }
  return nil;
}
@end

@interface GormTestCustomView : GSNibItem <NSCoding>
{
}
@end

@implementation	GormTestCustomView

- (Class) bestPossibleSuperClass
{
  Class cls = [NSView class];
  GormClassManager *classManager = [(id<Gorm>)NSApp classManager];

  if([classManager isSuperclass: @"NSOpenGLView" linkedToClass: theClass] ||
     [theClass isEqual: @"NSOpenGLView"])
    {
      cls = [GormOpenGLView class];
    }
  else  if([classManager isSuperclass: @"NSView" linkedToClass: theClass])
    {
      NSString *superClass = [classManager nonCustomSuperClassOf: theClass];

      // get the superclass if one exists...
      if(superClass != nil)
	{
	  cls = NSClassFromString(superClass);
	  if(cls == nil)
	    {
	      cls = [NSView class];
	    }
	}
    }

  return cls;
}


- (id) initWithCoder: (NSCoder*)aCoder
{
  id		obj;
  Class		cls;
  NSUInteger    mask;
  GormClassManager *classManager = [(id<Gorm>)NSApp classManager];
  
  [aCoder decodeValueOfObjCType: @encode(id) at: &theClass];
  theFrame = [aCoder decodeRect];
  [aCoder decodeValueOfObjCType: @encode(NSUInteger) 
	  at: &mask];
  
  cls = NSClassFromString(theClass);
  if([classManager isSuperclass: @"NSOpenGLView" linkedToClass: theClass] ||
     [theClass isEqual: @"NSOpenGLView"] || cls == nil)
    {
      cls = [self bestPossibleSuperClass];
    }
  
  obj = [cls allocWithZone: [self zone]];
  if (theFrame.size.height > 0 && theFrame.size.width > 0)
    obj = [obj initWithFrame: theFrame];
  else
    obj = [obj init];
  
  if ([obj respondsToSelector: @selector(setAutoresizingMask:)])
    {
      [obj setAutoresizingMask: mask];
    }
  
  /*
  if (![self isKindOfClass: [GSCustomView class]])
    {
      RETAIN(obj);
    }
  */

  RELEASE(self);
  return obj;
}

- (void) encodeWithCoder: (NSCoder *)coder
{
  // nothing to do.  This is a class for testing custom views only. GJC
}
@end