libs-gui/Source/NSBrowserCell.m

/*
   NSBrowserCell.m

   Cell class for the NSBrowser

   Copyright (C) 1996, 1997 Free Software Foundation, Inc.

   Author:  Scott Christley <scottc@net-community.com>
   Date: 1996
   Author:  Felipe A. Rodriguez <far@ix.netcom.com>
   Date: October 1998

   This file is part of the GNUstep GUI Library.

   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.
*/

#include <gnustep/gui/config.h>

#include <AppKit/NSBrowserCell.h>
#include <AppKit/NSTextFieldCell.h>
#include <AppKit/NSColor.h>
#include <AppKit/NSImage.h>
#include <AppKit/NSGraphics.h>
#include <AppKit/NSEvent.h>
#include <AppKit/NSWindow.h>

//
// Class variables
//
static NSImage *branch_image;
static NSImage *highlight_image;

//
// Private methods
//
@interface NSBrowserCell (Private)
- (void) setBranchImageCell: aCell;
- (void) setHighlightBranchImageCell: aCell;
- (void) setTextFieldCell: aCell;
@end

@implementation NSBrowserCell (Private)

- (void) setTextFieldCell: aCell
{
  ASSIGN(_browserText, aCell);
}

- (void) setBranchImageCell: aCell
{
  ASSIGN(_branchImage, aCell);
}

- (void) setHighlightBranchImageCell: aCell
{
  ASSIGN(_highlightBranchImage, aCell);
}

@end


//*****************************************************************************
//
// 		NSBrowserCell
//
//*****************************************************************************

@implementation NSBrowserCell

//
// Class methods
//
+ (void) initialize
{
  if (self == [NSBrowserCell class])
    {
      [self setVersion: 1];
      ASSIGN(branch_image, [NSImage imageNamed: @"common_3DArrowRight"]);
      ASSIGN(highlight_image, [NSImage imageNamed: @"common_3DArrowRightH"]);
    }
}

//
// Accessing Graphic Attributes
//
+ (NSImage*) branchImage
{
  return branch_image;
}

+ (NSImage*) highlightedBranchImage
{
  return highlight_image;
}

//
// Instance methods
//
- (id) init
{
  return [self initTextCell: @"aTitle"];
}

- (id) initTextCell: (NSString *)aString
{
  [super initTextCell: aString];
  // create image cells
  _branchImage = [[NSBrowserCell branchImage] retain];
  _highlightBranchImage = [[NSBrowserCell highlightedBranchImage] retain];
  // create the text cell
  _browserText = [[[NSCell alloc] initTextCell: aString] retain];
  [_browserText setEditable: NO];
  [_browserText setBordered: NO];
  [_browserText setAlignment: NSLeftTextAlignment];

  _alternateImage = nil;
  _isLeaf = NO;
  _isLoaded = NO;

  [self setEditable: YES];

  return self;
}

- (void) dealloc
{
  [_branchImage release];
  [_highlightBranchImage release];
  if (_alternateImage)
    [_alternateImage release];
  [_browserText release];

  [super dealloc];
}

- (id) copyWithZone: (NSZone*)zone
{
  NSBrowserCell	*c = [super copyWithZone: zone];

  c->_branchImage = [_branchImage retain];
  if (_alternateImage)
      c->_alternateImage = [_alternateImage retain];
  c->_highlightBranchImage = [_highlightBranchImage retain];
  c->_browserText = [_browserText copyWithZone: zone];	// Copy the text cell
  c->_isLeaf = _isLeaf;
  c->_isLoaded = _isLoaded;

  return c;
}

//
// Accessing Graphic Attributes
//
- (NSImage*) alternateImage
{
  return _alternateImage;
}

- (void) setAlternateImage: (NSImage *)anImage
{
  ASSIGN(_alternateImage, anImage);
}

//
// Placing in the Browser Hierarchy
//
- (BOOL) isLeaf
{
  return _isLeaf;
}

- (void) setLeaf: (BOOL)flag
{
  _isLeaf = flag;
}

//
// Determining Loaded Status
//
- (BOOL) isLoaded
{
  return _isLoaded;
}

- (void) setLoaded: (BOOL)flag
{
  _isLoaded = flag;
}

//
// Setting State
//
- (void) reset
{
  cell_highlighted = NO;
  cell_state = NO;
}

- (void) set
{
  cell_highlighted = YES;
  cell_state = YES;
}

//
// Setting and accessing the NSCell's Value
//
- (double) doubleValue
{
  return [_browserText doubleValue];
}

- (float) floatValue
{
  return [_browserText floatValue];
}

- (int) intValue
{
  return [_browserText intValue];
}

- (NSString*) stringValue
{
  return [_browserText stringValue];
}

- (void) setIntValue: (int)anInt
{
  [_browserText setIntValue: anInt];
}

- (void) setDoubleValue: (double)aDouble
{
  [_browserText setDoubleValue: aDouble];
}

- (void) setFloatValue: (float)aFloat
{
  [_browserText setFloatValue: aFloat];
}

- (void) setStringValue: (NSString*)aString
{
  [_browserText setStringValue: aString];
}

//
// Displaying
//
- (void) drawInteriorWithFrame: (NSRect)cellFrame inView: (NSView *)controlView
{
  NSRect	title_rect = cellFrame;
  NSRect	image_rect = cellFrame;
  NSImage	*image = nil;
  NSColor	*backColor;

  control_view = controlView;		// remember last view cell was drawn in
  if (cell_highlighted || cell_state)		// temporary hack FAR FIX ME?
    {
      backColor = [NSColor selectedControlColor];
      [backColor set];
      if (!_isLeaf)
	{
	  image = _highlightBranchImage;
	  image_rect.size.height = cellFrame.size.height;
	  image_rect.size.width = image_rect.size.height;
													  // Right justify
	  image_rect.origin.x += cellFrame.size.width- image_rect.size.width;
	}
      else
	image_rect = NSZeroRect;
    }
  else
    {
      backColor = [[controlView window] backgroundColor];
      [backColor set];
      if (!_isLeaf)
	{
	  image = _branchImage;
	  image_rect.size.height = cellFrame.size.height;
	  image_rect.size.width = image_rect.size.height;
	  // Right justify
	  image_rect.origin.x += cellFrame.size.width- image_rect.size.width;
	}
      else
	image_rect = NSZeroRect;
    }
  NSRectFill(cellFrame);	// Clear the background

  title_rect.size.width -= image_rect.size.width + 4;	// draw the title cell
  [_browserText drawWithFrame: title_rect inView: controlView];

  if (image)
    {
      [image setBackgroundColor: backColor];
      [self _drawImage: image inFrame: image_rect];
    }
}

//
// Editing Text
//
- (void) editWithFrame: (NSRect)aRect
		inView: (NSView *)controlView
		editor: (NSText *)textObject
	      delegate: (id)anObject
		 event: (NSEvent *)theEvent
{
  NSPoint location = [controlView convertPoint: [theEvent locationInWindow]
				      fromView: nil];

fprintf(stderr, " NSBrowserCell: editWithFrame --- ");

  [_browserText _setCursorLocation: location];
  [_browserText _setCursorVisibility: YES];

  if ([[controlView window] makeFirstResponder: controlView])
    fprintf(stderr, " XRBrowserCell: we are now first responder --- ");

  [self drawInteriorWithFrame: aRect inView: controlView];
}

- (void) endEditing: (NSText *)textObject
{
  [_browserText _setCursorVisibility: NO];
}

- (void) _handleKeyEvent: (NSEvent*)keyEvent
{
  fprintf(stderr, " NSBrowserCell: _handleKeyEvent --- ");

  [_browserText _handleKeyEvent: keyEvent];

//  [self drawInteriorWithFrame: aRect inView: controlView];
}

//
// NSCoding protocol
//
- (void) encodeWithCoder: (NSCoder*)aCoder
{
  [super encodeWithCoder: aCoder];

  [aCoder encodeObject: _browserText];
  [aCoder encodeObject: _branchImage];
  [aCoder encodeObject: _highlightBranchImage];
  [aCoder encodeValueOfObjCType: @encode(BOOL) at: &_isLeaf];
  [aCoder encodeValueOfObjCType: @encode(BOOL) at: &_isLoaded];
}

- (id) initWithCoder: (NSCoder*)aDecoder
{
  [super initWithCoder: aDecoder];

  [aDecoder decodeValueOfObjCType: @encode(id) at: &_browserText];
  [aDecoder decodeValueOfObjCType: @encode(id) at: &_branchImage];
  [aDecoder decodeValueOfObjCType: @encode(id) at: &_highlightBranchImage];
  [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_isLeaf];
  [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_isLoaded];

  return self;
}

@end