/* FSNBrowserColumn.m
 *  
 * Copyright (C) 2004 Free Software Foundation, Inc.
 *
 * Author: Enrico Sersale <enrico@imago.ro>
 * Date: July 2004
 *
 * This file is part of the GNUstep GWorkspace application
 *
 * 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 2 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 <AppKit/AppKit.h>
#include <math.h>
#include "FSNBrowserColumn.h"
#include "FSNBrowserCell.h"
#include "FSNBrowserMatrix.h"
#include "FSNBrowserScroll.h"
#include "FSNBrowser.h"
#include "FSNFunctions.h"

#define ICON_CELL_HEIGHT 28

#define CHECKRECT(rct) \
if (rct.size.width < 0) rct.size.width = 0; \
if (rct.size.height < 0) rct.size.height = 0

#define CHECKSIZE(sz) \
if (sz.width < 0) sz.width = 0; \
if (sz.height < 0) sz.height = 0

static id <DesktopApplication> desktopApp = nil;

@implementation FSNBrowserColumn

- (void)dealloc
{
  RELEASE (cellPrototype);
  TEST_RELEASE (shownNode);
  TEST_RELEASE (oldNode);
  TEST_RELEASE (extInfoType);  
  RELEASE (backColor);
    
  [super dealloc];
}

+ (void)initialize
{
  static BOOL initialized = NO;

  if (initialized == NO) {
    if (desktopApp == nil) {
      NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
      NSString *appName = [defaults stringForKey: @"DesktopApplicationName"];
      NSString *selName = [defaults stringForKey: @"DesktopApplicationSelName"];

      if (appName && selName) {
		    Class desktopAppClass = [[NSBundle mainBundle] classNamed: appName];
        SEL sel = NSSelectorFromString(selName);
        desktopApp = [desktopAppClass performSelector: sel];
      }
    }
  
    initialized = YES;
  }
}

- (id)initInBrowser:(FSNBrowser *)abrowser
            atIndex:(int)ind
      cellPrototype:(FSNBrowserCell *)acell
          cellsIcon:(BOOL)cicon
       nodeInfoType:(FSNInfoType)type
       extendedType:(NSString *)exttype
    backgroundColor:(NSColor *)acolor
{
  self = [super init];
  
  if (self) {
	  NSRect rect = NSMakeRect(0, 0, 150, 100);
    int lineh;
                
    browser = abrowser;
    index = ind;
    ASSIGN (cellPrototype, acell);
    cellsIcon = cicon;
    ASSIGN (backColor, acolor);

    infoType = type;
    extInfoType = nil;
    if (exttype) {
      ASSIGN (extInfoType, exttype);
    }

    shownNode = nil;
    oldNode = nil;
    matrix = nil;
    isLoaded = NO;
    
    [self setFrame: rect];
    
    fsnodeRep = [FSNodeRep sharedInstance];
    lineh = floor([fsnodeRep heighOfFont: [acell font]]);
    
    scroll = [[FSNBrowserScroll alloc] initWithFrame: rect 
                                    inColumn: self acceptDnd: cellsIcon];
    [self addSubview: scroll];
    RELEASE (scroll);
    
    if (cellsIcon) {
      cellsHeight = ICON_CELL_HEIGHT;
    } else {
      cellsHeight = lineh;
    }
    
    if (infoType != FSNInfoNameType) {
      cellsHeight += (lineh +1);
    }
    
    isDragTarget = NO;

	  matrix = [[FSNBrowserMatrix alloc] initInColumn: self 
                                          withFrame: [self bounds]
		                                           mode: NSListModeMatrix 
                                          prototype: cellPrototype
		      					                   numberOfRows: 0 
                                    numberOfColumns: 0 
                                          acceptDnd: cellsIcon];

	  [matrix setIntercellSpacing: NSMakeSize(0, 0)];
    [matrix setCellSize: NSMakeSize([scroll contentSize].width, cellsHeight)];  
	  [matrix setAutoscroll: YES];
	  [matrix setAllowsEmptySelection: YES];
    [matrix setBackgroundColor: backColor];
    [matrix setCellBackgroundColor: backColor];
	  [matrix setTarget: self];
	  [matrix setAction: @selector(doClick:)];
	  [matrix setDoubleAction: @selector(doDoubleClick:)];
	  [scroll setDocumentView: matrix];
    RELEASE (matrix);
  }
  
  return self;
}

- (void)setShowType:(FSNInfoType)type
{
  if (infoType != type) {
    NSArray *cells = [matrix cells];
    int lineh = floor([fsnodeRep heighOfFont: [cellPrototype font]]);
    int i;
    
    infoType = type;
    DESTROY (extInfoType);

    if (cellsIcon) {
      cellsHeight = ICON_CELL_HEIGHT;
    } else {
      cellsHeight = lineh;
    }

    if (infoType != FSNInfoNameType) {
      cellsHeight += (lineh +1);
    }
    
    [self adjustMatrix];

	  for (i = 0; i < [cells count]; i++) {
      [[cells objectAtIndex: i] setNodeInfoShowType: infoType];
    }
  }
}

- (void)setExtendedShowType:(NSString *)type
{
  if ((extInfoType == nil) || ([extInfoType isEqual: type] == NO)) {
    NSArray *cells = [matrix cells];    
    int lineh = floor([fsnodeRep heighOfFont: [cellPrototype font]]);  
    int i;
    
    infoType = FSNInfoExtendedType;
    ASSIGN (extInfoType, type);

    if (cellsIcon) {
      cellsHeight = ICON_CELL_HEIGHT;
    } else {
      cellsHeight = lineh;
    }

    cellsHeight += (lineh +1);

    [self adjustMatrix];

	  for (i = 0; i < [cells count]; i++) {
      FSNBrowserCell *cell = [cells objectAtIndex: i];
      [cell setExtendedShowType: extInfoType];
    }       
  }
}

- (void)showContentsOfNode:(FSNode *)anode
{
  NSArray *savedSelection = nil;
  NSMutableArray *visibleNodes = nil;
  float scrollTune = 0;
  int i = 0;

  if (oldNode && anode && [oldNode isEqualToNode: anode] && [anode isValid]) {
    NSArray *vnodes = nil;  
    
    savedSelection = [self selectedNodes];
    
    if (savedSelection) {
      RETAIN (savedSelection);
    }
    
    [matrix visibleCellsNodes: &vnodes scrollTuneSpace: &scrollTune];

    if (vnodes) {
      visibleNodes = [NSMutableArray new];
      [visibleNodes addObjectsFromArray: vnodes];
    }    
  }
      
  if ([matrix numberOfColumns] > 0) {
    [matrix removeColumn: 0];
  }
  
  DESTROY (shownNode); 
  DESTROY (oldNode);
  isLoaded = NO;

  if (anode && [anode isValid]) {
    id cell = nil;
    
    ASSIGN (oldNode, anode);    
    ASSIGN (shownNode, anode);    
        
    [self createRowsInMatrix];
    [self adjustMatrix];

    if (savedSelection) {
      [self selectCellsOfNodes: savedSelection sendAction: NO];
    } 

    if (visibleNodes) {
      int count = [visibleNodes count];
      
      for (i = 0; i < count; i++) {
        FSNode *node = [visibleNodes objectAtIndex: i];

        if ([self cellOfNode: node] == nil) {
          [visibleNodes removeObjectAtIndex: i];
          count--;
          i--;
        }
      }

      if ([visibleNodes count]) {
        cell = [self cellOfNode: [visibleNodes objectAtIndex: 0]];
        [matrix scrollToFirstPositionCell: cell withScrollTune: scrollTune];
      
      } else if ([[matrix cells] count]) {
        [matrix scrollCellToVisibleAtRow: 0 column: 0];
      }
      
    } else if ([[matrix cells] count]) {
      [matrix scrollCellToVisibleAtRow: 0 column: 0];
    }
               
    isLoaded = YES;
  }
  
  TEST_RELEASE (savedSelection);
  TEST_RELEASE (visibleNodes);  
}

- (FSNode *)shownNode
{
  return shownNode;
}

- (void)createRowsInMatrix
{
  CREATE_AUTORELEASE_POOL (pool);
  NSArray *subNodes = [shownNode subNodes];
  int count = [subNodes count];
  SEL compSel = [fsnodeRep compareSelectorForDirectory: [shownNode path]];
  int i;

  if ([matrix numberOfColumns] > 0) {
    [matrix removeColumn: 0];
  }

  if (count == 0) {
    [matrix setNeedsDisplay: YES];
		return;
	}
  
  [matrix addColumn]; 

  for (i = 0; i < count; ++i) {
    FSNode *subnode = [subNodes objectAtIndex: i];
    id cell;
    
    if (i != 0) {
		  [matrix insertRow: i];
    } 

    cell = [matrix cellAtRow: i column: 0];   
    [cell setLoaded: YES];
		[cell setEnabled: YES]; 
    [cell setNode: subnode nodeInfoType: infoType extendedType: extInfoType];
   
    if ([subnode isDirectory]) {
      if ([subnode isPackage]) {
        [cell setLeaf: YES]; 
      } else {
        [cell setLeaf: NO]; 
      }
    } else {
		  [cell setLeaf: YES];
    }
    
    if (cellsIcon) {
      [cell setIcon];
    }
    
    [cell checkLocked];	
  }

  [matrix sortUsingSelector: compSel];
  RELEASE (pool);
}

- (void)addCellsWithNames:(NSArray *)names
{
  NSArray *subNodes = [shownNode subNodes];

  if ([subNodes count]) {
    CREATE_AUTORELEASE_POOL(arp);
    NSArray *selectedNodes = [self selectedNodes];
    SEL compSel = [fsnodeRep compareSelectorForDirectory: [shownNode path]];
    int i;

    [matrix setIntercellSpacing: NSMakeSize(0, 0)];
    	  
    for (i = 0; i < [names count]; i++) {
      NSString *name = [names objectAtIndex: i];
      FSNode *node = [FSNode subnodeWithName: name inSubnodes: subNodes];
      
      if ([node isValid]) {   
		    FSNBrowserCell *cell = [self cellOfNode: node]; 
         
        if (cell == nil) {
          [matrix addRow];
          cell = [matrix cellAtRow: [[matrix cells] count] -1 column: 0];

          [cell setLoaded: YES];
		      [cell setEnabled: YES]; 
          [cell setNode: node nodeInfoType: infoType extendedType: extInfoType];

          if ([node isDirectory]) {
            if ([node isPackage]) {
              [cell setLeaf: YES]; 
            } else {
              [cell setLeaf: NO]; 
            }
          } else {
		        [cell setLeaf: YES];
          }

          if (cellsIcon) {
            [cell setIcon];
          }

          [cell checkLocked];	

        } else {
          [cell setEnabled: YES];
        }
      }
    }

    [matrix sortUsingSelector: compSel];
	  [self adjustMatrix];

	  if (selectedNodes) {
      [self selectCellsOfNodes: selectedNodes sendAction: NO];
    } 

    [matrix setNeedsDisplay: YES]; 
    RELEASE (arp);
  }
}

- (void)removeCellsWithNames:(NSArray *)names
{
  CREATE_AUTORELEASE_POOL(arp);
  NSArray *selcells = nil;
  NSMutableArray *selectedCells = nil;
  NSArray *vnodes = nil;
  NSMutableArray *visibleNodes = nil;
  FSNBrowserColumn *col = nil;
  id cell = nil;
  float scrollTune = 0;
  BOOL updated = NO;
  int i;
  
  selcells = [matrix selectedCells];
  
  if (selcells && [selcells count]) {
    selectedCells = [selcells mutableCopy];
  }

  [matrix visibleCellsNodes: &vnodes scrollTuneSpace: &scrollTune];
  
  if (vnodes && [vnodes count]) {
    visibleNodes = [vnodes mutableCopy];
  }
  
  for (i = 0; i < [names count]; i++) {
    NSString *cname = [names objectAtIndex: i];
    
    cell = [self cellWithName: cname];

    if (cell) {
      FSNode *node = [cell node];
			int row, col;
      
			if (visibleNodes && [visibleNodes containsObject: node]) {
				[visibleNodes removeObject: node];
			}
			
			if (selectedCells && [selectedCells containsObject: cell]) {
				[selectedCells removeObject: cell];
			}
      
      [matrix getRow: &row column: &col ofCell: cell];  
      [matrix removeRow: row];  
      updated = YES;  			
    }
  }

  [matrix sizeToCells];
  [matrix setNeedsDisplay: YES];
  
  if (updated) {
	  if ([selectedCells count] > 0) {    
    
      [self selectCells: selectedCells sendAction: NO];    
      [matrix setNeedsDisplay: YES];
      
      if (visibleNodes && [visibleNodes count]) {
        cell = [self cellOfNode: [visibleNodes objectAtIndex: 0]];
        [matrix scrollToFirstPositionCell: cell withScrollTune: scrollTune];
      }
      
	  } else {
      if (index != 0) {		
        if ((index - 1) >= [browser firstVisibleColumn]) {
          col = [browser columnBeforeColumn: self];
          cell = [col cellWithPath: [shownNode parentPath]];

          [col selectCell: cell sendAction: YES];
        }
      } else {
        [browser setLastColumn: index];
      }
	  }
    
  } else if ([visibleNodes count]) {
    cell = [self cellOfNode: [visibleNodes objectAtIndex: 0]];
    [matrix scrollToFirstPositionCell: cell withScrollTune: scrollTune];
  }

  TEST_RELEASE (selectedCells); 
  TEST_RELEASE (visibleNodes);
  RELEASE (arp);
}

- (NSArray *)selectedCells
{
  NSArray *selected = [matrix selectedCells];

	if (selected) {
    NSMutableArray *cells = [NSMutableArray array];
    BOOL missing = NO;
    int i;
  
    for (i = 0; i < [selected count]; i++) {  
      FSNBrowserCell *cell = [selected objectAtIndex: i];
      
      if ([[cell node] isValid]) {  
        [cells addObject: cell];
      } else {
        missing = YES;
      }
    }

    if (missing) {
      [matrix deselectAllCells];
      if ([cells count]) {
        [self selectCells: cells sendAction: YES];
      }
    }

	  if ([cells count] > 0) {
  	  return [cells makeImmutableCopyOnFail: NO];
	  }
  }
	
	return nil;
}

- (NSArray *)selectedNodes
{
  NSArray *selected = [matrix selectedCells];

	if (selected) {
    NSMutableArray *nodes = [NSMutableArray array];
    BOOL missing = NO;
    int i;
  
    for (i = 0; i < [selected count]; i++) {  
      FSNode *node = [[selected objectAtIndex: i] node];
      
      if ([node isValid]) {  
        [nodes addObject: node];
      } else {
        missing = YES;
      }
    }

    if (missing) {
      [matrix deselectAllCells];
      if ([nodes count]) {
        [self selectCellsOfNodes: nodes sendAction: YES];
      }
    }

	  if ([nodes count] > 0) {
  	  return [nodes makeImmutableCopyOnFail: NO];
	  }
  }
	
	return nil;
}

- (NSArray *)selectedPaths
{
  NSArray *selected = [matrix selectedCells];

	if (selected) {
    NSMutableArray *paths = [NSMutableArray array];
    BOOL missing = NO;
    int i;
  
    for (i = 0; i < [selected count]; i++) {  
      FSNode *node = [[selected objectAtIndex: i] node];
      
      if ([node isValid]) {  
        [paths addObject: [node path]];
      } else {
        missing = YES;
      }
    }

    if (missing) {
      [matrix deselectAllCells];
      if ([paths count]) {
        [self selectCellsWithPaths: paths sendAction: YES];
      }
    }

	  if ([paths count] > 0) {
  	  return [paths makeImmutableCopyOnFail: NO];
	  }
  }
	
	return nil;
}

- (void)selectCell:(FSNBrowserCell *)cell
        sendAction:(BOOL)act
{
  [matrix selectCell: cell];
  if (act) {
    [matrix sendAction];
  }
}

- (FSNBrowserCell *)selectCellOfNode:(FSNode *)node
                          sendAction:(BOOL)act
{
  FSNBrowserCell *cell = [self cellOfNode: node];  

  if (cell) {
    [matrix selectCell: cell];
    if (act) {
      [matrix sendAction];
    }
    return cell;
  }
  
  return nil;
}
                
- (FSNBrowserCell *)selectCellWithPath:(NSString *)path
                            sendAction:(BOOL)act
{
  FSNBrowserCell *cell = [self cellWithPath: path];  

  if (cell) {
    [matrix selectCell: cell];
    if (act) {
      [matrix sendAction];
    }
    return cell;
  }
  
  return nil;
}
                
                
- (FSNBrowserCell *)selectCellWithName:(NSString *)name 
                            sendAction:(BOOL)act
{
  FSNBrowserCell *cell = [self cellWithName: name];  

  if (cell) {
    [matrix selectCell: cell];
    if (act) {
      [matrix sendAction];
    }
    return cell;
  }
  
  return nil;
}

- (void)selectCells:(NSArray *)cells 
         sendAction:(BOOL)act
{
  if (cells && [cells count]) {
    int i;

    [matrix deselectAllCells];

	  for (i = 0; i < [cells count]; i++) {
      [matrix selectCell: [cells objectAtIndex: i]];
	  }

    if (act) {
      [matrix sendAction];
    }
  }
}

- (void)selectCellsOfNodes:(NSArray *)nodes 
                sendAction:(BOOL)act
{
  if (nodes && [nodes count]) {
    NSArray *cells = [matrix cells];
    int i;

    [matrix deselectAllCells];

	  for (i = 0; i < [cells count]; i++) {
	    FSNBrowserCell *cell = [cells objectAtIndex: i];

      if ([nodes containsObject: [cell node]]) {
        [matrix selectCell: cell];
      } 
	  }

    if ([cells count] && act) {
      [matrix sendAction];
    }
  }
}

- (void)selectCellsWithPaths:(NSArray *)paths 
                  sendAction:(BOOL)act
{
  if (paths && [paths count]) {
    NSArray *cells = [matrix cells];
    int i;

    [matrix deselectAllCells];

	  for (i = 0; i < [cells count]; i++) {
	    FSNBrowserCell *cell = [cells objectAtIndex: i];

      if ([paths containsObject: [[cell node] path]]) {
        [matrix selectCell: cell];
      } 
	  }

    if (act) {
      [matrix sendAction];
    }
  }
}

- (void)selectCellsWithNames:(NSArray *)names  
                  sendAction:(BOOL)act
{
  if (names && [names count]) {
    NSArray *cells = [matrix cells];
    int i;

    [matrix deselectAllCells];

	  for (i = 0; i < [cells count]; i++) {
	    FSNBrowserCell *cell = [cells objectAtIndex: i];

      if ([names containsObject: [[cell node] name]]) {
        [matrix selectCell: cell];
      } 
	  }

    if (act) {
      [matrix sendAction];
    }
  }  
}

- (BOOL)selectFirstCell
{
  if ([[matrix cells] count]) {
    [matrix selectCellAtRow: 0 column: 0];
    [matrix sendAction];
    return YES;
  }  
  
  return NO;
}

- (BOOL)selectCellWithPrefix:(NSString *)prefix
{
  if ([[matrix cells] count]) {
    int n = [matrix numberOfRows];
    int s = [matrix selectedRow];
    NSString *cellstr = nil;
    int i = 0;
    
    if (s != -1) {
      cellstr = [[matrix cellAtRow: s column: 0] stringValue];
    }
    
    if (cellstr && ([cellstr length] > 0) && [cellstr hasPrefix: prefix]) {
      return YES;
    }
    
	  for (i = s + 1; i < n; i++) {
      cellstr = [[matrix cellAtRow: i column: 0] stringValue];
    
			if (([cellstr length] > 0) && ([cellstr hasPrefix: prefix])) {
        [matrix deselectAllCells];
        [matrix selectCellAtRow: i column: 0];
		  	[matrix scrollCellToVisibleAtRow: i column: 0];
		  	[matrix sendAction];
		  	return YES;
			}
	  }
    
		for (i = 0; i < s; i++) {
      cellstr = [[matrix cellAtRow: i column: 0] stringValue];
    
			if (([cellstr length] > 0) && ([cellstr hasPrefix: prefix])) {
        [matrix deselectAllCells];
        [matrix selectCellAtRow: i column: 0];
		  	[matrix scrollCellToVisibleAtRow: i column: 0];
		  	[matrix sendAction];
		  	return YES;
			}
		}
  }
    
  return NO;
}

- (void)selectAll
{
  if ([[matrix cells] count]) {
    NSArray *cells = [matrix cells];
    unsigned count = [cells count];
    FSNBrowserCell *cell;
    int selstart = 0;
    int selend = 0;
    int i;
        
    [matrix deselectAllCells];

    while (selstart < count) {
      cell = [cells objectAtIndex: selstart];
      
      if ([[cell node] isReserved] == NO) {
        break;
      } 
      
      selstart++;
    } 
    
    i = selstart;

    while (i < count) {
      cell = [cells objectAtIndex: i];
      
      if ([[cell node] isReserved] == NO) {
        selend = i;

      } else {
        [matrix setSelectionFrom: selstart 
                              to: selend
                          anchor: selstart 
                       highlight: YES];
        
        selstart = i + 1;
        
        while (selstart < count) {        
          cell = [cells objectAtIndex: selstart];

          if ([[cell node] isReserved] == NO) {
            break;
          }
           
          selstart++;
          i++;
        }
      }
      
      i++;
    }
    
    if (selstart < count) {
      [matrix setSelectionFrom: selstart 
                            to: selend 
                        anchor: selstart 
                     highlight: YES];
    }

    [matrix sendAction];
        
  } else {
    FSNBrowserColumn *col = [browser columnBeforeColumn: self];
  
    if (col) {
      [col selectAll];
    }
  }
}

- (void)unselectAllCells
{
  [matrix deselectAllCells];
}

- (void)setEditorForCell:(FSNBrowserCell *)cell
{
  [browser setEditorForCell: cell inColumn: self];
}

- (void)stopCellEditing
{
  [browser stopCellEditing];
}

- (void)checkLockedReps
{
  NSArray *cells = [matrix cells];
  int i;  

  for (i = 0; i < [cells count]; i++) {
    [[cells objectAtIndex: i] checkLocked];
  }

  [matrix setNeedsDisplay: YES];   
}

- (void)lockCellsOfNodes:(NSArray *)nodes
{
  int i;
  BOOL found = NO;
  
  for (i = 0; i < [nodes count]; i++) {
    FSNBrowserCell *cell = [self cellOfNode: [nodes objectAtIndex: i]];
    
    if (cell && [cell isEnabled]) {   
      [cell setEnabled: NO];
      found = YES;
    }
  }
		
  [matrix setNeedsDisplay: found];   
}

- (void)lockCellsWithPaths:(NSArray *)paths
{
  int i;
  BOOL found = NO;
  
  for (i = 0; i < [paths count]; i++) {
    FSNBrowserCell *cell = [self cellWithPath: [paths objectAtIndex: i]];
    
    if (cell && [cell isEnabled]) {   
      [cell setEnabled: NO];
      found = YES;
    }
  }
		
  [matrix setNeedsDisplay: found];   
}

- (void)lockCellsWithNames:(NSArray *)names
{
  int i;
  BOOL found = NO;
  
  for (i = 0; i < [names count]; i++) {
    FSNBrowserCell *cell = [self cellWithName: [names objectAtIndex: i]];
    
    if (cell && [cell isEnabled]) {   
      [cell setEnabled: NO];
      found = YES;
    }
  }
		
  [matrix setNeedsDisplay: found];   
}

- (void)unLockCellsOfNodes:(NSArray *)nodes
{
  int i;
  BOOL found = NO;

  for (i = 0; i < [nodes count]; i++) {
    FSNBrowserCell *cell = [self cellOfNode: [nodes objectAtIndex: i]];
    
    if (cell && ([cell isEnabled] == NO)) { 
      [cell setEnabled: YES];
      found = YES;
    }
  }
		
  [matrix setNeedsDisplay: found];   
}

- (void)unLockCellsWithPaths:(NSArray *)paths
{
  int i;
  BOOL found = NO;

  for (i = 0; i < [paths count]; i++) {
    FSNBrowserCell *cell = [self cellWithPath: [paths objectAtIndex: i]];
    
    if (cell && ([cell isEnabled] == NO)) { 
      [cell setEnabled: YES];
      found = YES;
    }
  }
		
  [matrix setNeedsDisplay: found];   
}

- (void)unLockCellsWithNames:(NSArray *)names
{
  int i;
  BOOL found = NO;

  for (i = 0; i < [names count]; i++) {
    FSNBrowserCell *cell = [self cellWithName: [names objectAtIndex: i]];
    
    if (cell && ([cell isEnabled] == NO)) { 
      [cell setEnabled: YES];
      found = YES;
    }
  }
		
  [matrix setNeedsDisplay: found];   
}

- (void)lock
{
  NSArray *cells = [matrix cells];
  int i;  

  for (i = 0; i < [cells count]; i++) {
		id cell = [cells objectAtIndex: i];

		if ([cell isEnabled]) {
    	[cell setEnabled: NO];
		}
  }

  [matrix setNeedsDisplay: YES];   
}

- (void)unlock
{
  NSArray *cells = [matrix cells];
  int i;  

  for (i = 0; i < [cells count]; i++) {
		id cell = [cells objectAtIndex: i];

		if ([cell isEnabled] == NO) {
    	[cell setEnabled: YES];
		}
  }

  [matrix setNeedsDisplay: YES];   
}

- (FSNBrowserCell *)cellOfNode:(FSNode *)node
{
  NSArray *cells = [matrix cells];
  int i;

	for (i = 0; i < [cells count]; i++) {
	  FSNBrowserCell *cell = [cells objectAtIndex: i];
    
    if ([[cell node] isEqualToNode: node]) {
      return cell;
    } 
	}

  return nil;
}            

- (FSNBrowserCell *)cellWithPath:(NSString *)path
{
  NSArray *cells = [matrix cells];
  int i;

	for (i = 0; i < [cells count]; i++) {
	  FSNBrowserCell *cell = [cells objectAtIndex: i];
    
    if ([[[cell node] path] isEqual: path]) {
      return cell;
    } 
	}

  return nil;
}            

- (FSNBrowserCell *)cellWithName:(NSString *)name
{
  NSArray *cells = [matrix cells];
  int i;

	for (i = 0; i < [cells count]; i++) {
	  FSNBrowserCell *cell = [cells objectAtIndex: i];
    
    if ([[[cell node] name] isEqual: name]) {
      return cell;
    } 
	}

  return nil;
}             

- (void)adjustMatrix
{
  [matrix setCellSize: NSMakeSize([scroll contentSize].width, cellsHeight)];  
  [matrix sizeToCells];
}

- (void)doClick:(id)sender
{
  [browser clickInMatrixOfColumn: self];
}

- (void)doDoubleClick:(id)sender
{
  [browser doubleClickInMatrixOfColumn: self];
}

- (NSMatrix *)cmatrix
{
  return matrix;
}

- (int)index
{
  return index;
}

- (BOOL)isLoaded
{
  return isLoaded;
}

- (BOOL)isSelected
{
  if (isLoaded && matrix) {
    return ([matrix selectedCell] ? YES : NO);
  }
  
  return NO;
}

- (void)setBackgroundColor:(NSColor *)acolor
{
  ASSIGN (backColor, acolor);
  [matrix setBackgroundColor: backColor];
  [matrix setCellBackgroundColor: backColor];
}

- (void)mouseUp:(NSEvent *)theEvent
{
  NSPoint p = [theEvent locationInWindow];
  int row, col;

  p = [matrix convertPoint: p fromView: nil];

  if ([matrix getRow: &row column: &col forPoint: p] == NO) {
    [browser clickInColumn: self];
  }
}

- (void)setFrame:(NSRect)frameRect
{
  NSRect r = NSMakeRect(1, 0, frameRect.size.width -1, frameRect.size.height);
  
  if (index == [browser firstVisibleColumn]) {
    r.origin.x = 0;
    r.size.width += 1;
  }
  
  CHECKRECT (frameRect);
  [super setFrame: frameRect]; 
   
  CHECKRECT (r);
  [scroll setFrame: r];  
  
  [self adjustMatrix];
}

- (void)drawRect:(NSRect)rect
{
  [super drawRect: rect];
  
  if (index != [browser firstVisibleColumn]) {
	  [[NSColor blackColor] set];  
    [NSBezierPath strokeLineFromPoint: NSMakePoint(0, 0) 
                              toPoint: NSMakePoint(0, rect.size.height)];
  }
}

@end


@implementation FSNBrowserColumn (DraggingDestination)

- (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender
{
	NSPasteboard *pb;
  NSDragOperation sourceDragMask;
	NSArray *sourcePaths;
  NSString *basePath;
  NSString *nodePath;
  NSString *prePath;
	int count;
  
	isDragTarget = NO;	
  
  if ((shownNode == nil) || ([shownNode isValid] == NO)) {
    return NSDragOperationNone;
  }

  if ([shownNode isDirectory]) {
    if ([shownNode isSubnodeOfPath: [desktopApp trashPath]]) { 
      return NSDragOperationNone;
    }
  }	
  
 	pb = [sender draggingPasteboard];

  if (pb && [[pb types] containsObject: NSFilenamesPboardType]) {
    sourcePaths = [pb propertyListForType: NSFilenamesPboardType]; 
       
  } else if ([[pb types] containsObject: @"GWRemoteFilenamesPboardType"]) {
    NSData *pbData = [pb dataForType: @"GWRemoteFilenamesPboardType"]; 
    NSDictionary *pbDict = [NSUnarchiver unarchiveObjectWithData: pbData];
    
    sourcePaths = [pbDict objectForKey: @"paths"];
    
  } else if ([[pb types] containsObject: @"GWLSFolderPboardType"]) {
    NSData *pbData = [pb dataForType: @"GWLSFolderPboardType"]; 
    NSDictionary *pbDict = [NSUnarchiver unarchiveObjectWithData: pbData];
    
    sourcePaths = [pbDict objectForKey: @"paths"];
    
  } else {
    return NSDragOperationNone;
  }

	count = [sourcePaths count];
	if (count == 0) {
		return NSDragOperationNone;
  } 
    
  if ([shownNode isWritable] == NO) {
    return NSDragOperationNone;
  }
    
  nodePath = [shownNode path];

  basePath = [[sourcePaths objectAtIndex: 0] stringByDeletingLastPathComponent];
  if ([basePath isEqual: nodePath]) {
    return NSDragOperationNone;
  }
  
  if ([sourcePaths containsObject: nodePath]) {
    return NSDragOperationNone;
  }

  prePath = [NSString stringWithString: nodePath];

  while (1) {
    if ([sourcePaths containsObject: prePath]) {
      return NSDragOperationNone;
    }
    if ([prePath isEqual: path_separator()]) {
      break;
    }            
    prePath = [prePath stringByDeletingLastPathComponent];
  }

  if ([shownNode isDirectory] && [shownNode isParentOfPath: basePath]) {
    NSArray *subNodes = [shownNode subNodes];
    int i;
    
    for (i = 0; i < [subNodes count]; i++) {
      FSNode *nd = [subNodes objectAtIndex: i];
      
      if ([nd isDirectory]) {
        int j;
        
        for (j = 0; j < count; j++) {
          NSString *fname = [[sourcePaths objectAtIndex: j] lastPathComponent];
          
          if ([[nd name] isEqual: fname]) {
            return NSDragOperationNone;
          }
        }
      }
    }
  }	

  isDragTarget = YES;	
  forceCopy = NO;
    
	sourceDragMask = [sender draggingSourceOperationMask];

	if (sourceDragMask == NSDragOperationCopy) {
		return NSDragOperationCopy;
	} else if (sourceDragMask == NSDragOperationLink) {
		return NSDragOperationLink;
	} else {
    if ([[NSFileManager defaultManager] isWritableFileAtPath: basePath]) {
      return NSDragOperationAll;			
    } else {
      forceCopy = YES;
			return NSDragOperationCopy;			
    }
	}		

  isDragTarget = NO;	
  return NSDragOperationNone;
}

- (NSDragOperation)draggingUpdated:(id <NSDraggingInfo>)sender
{
  NSDragOperation sourceDragMask = [sender draggingSourceOperationMask];
  
	if (isDragTarget == NO) {
		return NSDragOperationNone;
	}

	if (sourceDragMask == NSDragOperationCopy) {
		return NSDragOperationCopy;
	} else if (sourceDragMask == NSDragOperationLink) {
		return NSDragOperationLink;
	} else {
		return forceCopy ? NSDragOperationCopy : NSDragOperationAll;
	}

	return NSDragOperationNone;
}

- (void)draggingExited:(id <NSDraggingInfo>)sender
{
	isDragTarget = NO;
}

- (BOOL)prepareForDragOperation:(id <NSDraggingInfo>)sender
{
	return isDragTarget;
}

- (BOOL)performDragOperation:(id <NSDraggingInfo>)sender
{
	return YES;
}

- (void)concludeDragOperation:(id <NSDraggingInfo>)sender
{
	NSPasteboard *pb;
  NSDragOperation sourceDragMask;
	NSArray *sourcePaths;
  NSString *operation, *source;
  NSMutableArray *files;
	NSMutableDictionary *opDict;
	NSString *trashPath;
  int i;

	isDragTarget = NO;  

	sourceDragMask = [sender draggingSourceOperationMask];
  pb = [sender draggingPasteboard];
    
  if ([[pb types] containsObject: @"GWRemoteFilenamesPboardType"]) {  
    NSData *pbData = [pb dataForType: @"GWRemoteFilenamesPboardType"]; 

    [desktopApp concludeRemoteFilesDragOperation: pbData
                                     atLocalPath: [shownNode path]];
    return;
    
  } else if ([[pb types] containsObject: @"GWLSFolderPboardType"]) {  
    NSData *pbData = [pb dataForType: @"GWLSFolderPboardType"]; 

    [desktopApp lsfolderDragOperation: pbData
                      concludedAtPath: [shownNode path]];
    return;
  }
    
  sourcePaths = [pb propertyListForType: NSFilenamesPboardType];
  
  if ([sourcePaths count] == 0) {
    return;
  }
  
  source = [[sourcePaths objectAtIndex: 0] stringByDeletingLastPathComponent];
  
  trashPath = [desktopApp trashPath];

  if ([source isEqual: trashPath]) {
    operation = @"GWorkspaceRecycleOutOperation";
	} else {	
		if (sourceDragMask == NSDragOperationCopy) {
			operation = NSWorkspaceCopyOperation;
		} else if (sourceDragMask == NSDragOperationLink) {
			operation = NSWorkspaceLinkOperation;
		} else {
      if ([[NSFileManager defaultManager] isWritableFileAtPath: source]) {
			  operation = NSWorkspaceMoveOperation;
      } else {
			  operation = NSWorkspaceCopyOperation;
      }
		}
  }

  files = [NSMutableArray array];    
  for(i = 0; i < [sourcePaths count]; i++) {    
    [files addObject: [[sourcePaths objectAtIndex: i] lastPathComponent]];
  }  

	opDict = [NSMutableDictionary dictionary];
	[opDict setObject: operation forKey: @"operation"];
	[opDict setObject: source forKey: @"source"];
	[opDict setObject: [shownNode path] forKey: @"destination"];
	[opDict setObject: files forKey: @"files"];

  [desktopApp performFileOperation: opDict];
}

- (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender
                      inMatrixCell:(id)cell
{
	NSPasteboard *pb = [sender draggingPasteboard];
  NSDragOperation sourceDragMask = [sender draggingSourceOperationMask];
  FSNode *node = [cell node];
  NSString *nodePath = [node path];
	NSArray *sourcePaths;
	NSString *fromPath;
  NSString *prePath;
	unsigned i, count;

  if (([cell isEnabled] == NO) || ([node isDirectory] == NO) 
            || ([node isPackage] && ([node isApplication] == NO))
            || (([node isWritable] == NO) && ([node isApplication] == NO))) {
    return NSDragOperationNone;
  }

  if ([node isDirectory]) {
    if ([node isSubnodeOfPath: [desktopApp trashPath]]) { 
      return NSDragOperationNone;
    }
  }	
 
  sourcePaths = nil;

  if ([[pb types] containsObject: NSFilenamesPboardType]) {
    sourcePaths = [pb propertyListForType: NSFilenamesPboardType]; 
       
  } else if ([[pb types] containsObject: @"GWRemoteFilenamesPboardType"]) {
    if ([node isApplication] == NO) {
      NSData *pbData = [pb dataForType: @"GWRemoteFilenamesPboardType"]; 
      NSDictionary *pbDict = [NSUnarchiver unarchiveObjectWithData: pbData];
    
      sourcePaths = [pbDict objectForKey: @"paths"];
    }
  } else if ([[pb types] containsObject: @"GWLSFolderPboardType"]) {
    if ([node isApplication] == NO) {
      NSData *pbData = [pb dataForType: @"GWLSFolderPboardType"]; 
      NSDictionary *pbDict = [NSUnarchiver unarchiveObjectWithData: pbData];
    
      sourcePaths = [pbDict objectForKey: @"paths"];
    }
  }

  if (sourcePaths == nil) {
    return NSDragOperationNone;
  }
  
	count = [sourcePaths count];
	if (count == 0) {
		return NSDragOperationNone;
  } 

	fromPath = [[sourcePaths objectAtIndex: 0] stringByDeletingLastPathComponent];

	if ([nodePath isEqual: fromPath]) {
		return NSDragOperationNone;
  }  

  if ([sourcePaths containsObject: nodePath]) {
    return NSDragOperationNone;
  }

  prePath = [NSString stringWithString: nodePath];

  while (1) {
    CREATE_AUTORELEASE_POOL(arp);

    if ([sourcePaths containsObject: prePath]) {
      RELEASE (arp);
      return NSDragOperationNone;
    }
    if ([prePath isEqual: path_separator()]) {
      RELEASE (arp);
      break;
    }            
    prePath = [prePath stringByDeletingLastPathComponent];
  }

  if ([node isApplication]) {
    for (i = 0; i < count; i++) {
      CREATE_AUTORELEASE_POOL(arp);
      FSNode *nd = [FSNode nodeWithPath: [sourcePaths objectAtIndex: i]];
      
      if (([nd isPlain] == NO) && ([nd isPackage] == NO)) {
        RELEASE (arp);
        return NSDragOperationNone;
      }
      RELEASE (arp);
    }
  }

  if ([node isDirectory] && [node isParentOfPath: fromPath]) {
    NSArray *subNodes = [node subNodes];
    
    for (i = 0; i < [subNodes count]; i++) {
      FSNode *nd = [subNodes objectAtIndex: i];
      
      if ([nd isDirectory]) {
        int j;
        
        for (j = 0; j < count; j++) {
          NSString *fname = [[sourcePaths objectAtIndex: j] lastPathComponent];
          
          if ([[nd name] isEqual: fname]) {
            return NSDragOperationNone;
          }
        }
      }
    }
  }	

	if (sourceDragMask == NSDragOperationCopy) {
		return ([node isApplication] ? NSDragOperationMove : NSDragOperationCopy);
	} else if (sourceDragMask == NSDragOperationLink) {
		return ([node isApplication] ? NSDragOperationMove : NSDragOperationLink);
	} else {
    if ([[NSFileManager defaultManager] isWritableFileAtPath: fromPath]
                                                    || [node isApplication]) {
      return NSDragOperationAll;			
    } else {
			return NSDragOperationCopy;			
    }
	}
    
  return NSDragOperationNone;
}

- (void)concludeDragOperation:(id <NSDraggingInfo>)sender
                 inMatrixCell:(id)cell
{
  FSNode *node = [cell node];
	NSPasteboard *pb = [sender draggingPasteboard];
  NSDragOperation sourceDragMask = [sender draggingSourceOperationMask];
	NSArray *sourcePaths;
  NSString *operation, *source;
  NSMutableArray *files;
	NSMutableDictionary *opDict;
	NSString *trashPath;
  unsigned i;

  if (([cell isEnabled] == NO) 
                  || ([cell isLeaf] && ([node isApplication] == NO))) {
    return;
  }

  if ([node isApplication] == NO) {    
    if ([[pb types] containsObject: @"GWRemoteFilenamesPboardType"]) {  
      NSData *pbData = [pb dataForType: @"GWRemoteFilenamesPboardType"]; 

      [desktopApp concludeRemoteFilesDragOperation: pbData
                                       atLocalPath: [[cell node] path]];
      return;

    } else if ([[pb types] containsObject: @"GWLSFolderPboardType"]) {  
      NSData *pbData = [pb dataForType: @"GWLSFolderPboardType"]; 

      [desktopApp lsfolderDragOperation: pbData
                        concludedAtPath: [[cell node] path]];
      return;
    }
  }
  
  sourcePaths = [pb propertyListForType: NSFilenamesPboardType];

  if ([node isApplication] == NO) {  
    source = [[sourcePaths objectAtIndex: 0] stringByDeletingLastPathComponent];
    trashPath = [desktopApp trashPath];

    if ([source isEqual: trashPath]) {
  		  operation = @"GWorkspaceRecycleOutOperation";
	  } else {	
		  if (sourceDragMask == NSDragOperationCopy) {
			  operation = NSWorkspaceCopyOperation;
		  } else if (sourceDragMask == NSDragOperationLink) {
			  operation = NSWorkspaceLinkOperation;
		  } else {
        if ([[NSFileManager defaultManager] isWritableFileAtPath: source]) {
			    operation = NSWorkspaceMoveOperation;
        } else {
			    operation = NSWorkspaceCopyOperation;
        }
		  }
    }

    files = [NSMutableArray arrayWithCapacity: 1];    
    for(i = 0; i < [sourcePaths count]; i++) {    
      [files addObject: [[sourcePaths objectAtIndex: i] lastPathComponent]];
    }  

	  opDict = [NSMutableDictionary dictionaryWithCapacity: 4];
	  [opDict setObject: operation forKey: @"operation"];
	  [opDict setObject: source forKey: @"source"];
	  [opDict setObject: [[cell node] path] forKey: @"destination"];
	  [opDict setObject: files forKey: @"files"];

    [desktopApp performFileOperation: opDict];

  } else {
    for (i = 0; i < [sourcePaths count]; i++) {    
      NSString *path = [sourcePaths objectAtIndex: i];
    
      NS_DURING
        {
      [[NSWorkspace sharedWorkspace] openFile: path 
                              withApplication: [node name]];
        }
      NS_HANDLER
        {
      NSRunAlertPanel(NSLocalizedString(@"error", @""), 
          [NSString stringWithFormat: @"%@ %@!", 
                    NSLocalizedString(@"Can't open ", @""), [node name]],
                                        NSLocalizedString(@"OK", @""), 
                                        nil, 
                                        nil);                                     
        }
      NS_ENDHANDLER  
    }
  }
}

@end