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/* PlaylistView.m - this file is part of Cynthiune
*
* Copyright (C) 2004 Wolfgang Sourdeau
*
* Author: Wolfgang Sourdeau <Wolfgang@Contre.COM>
*
* This file 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, or (at your option)
* any later version.
*
* This file 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#import <AppKit/NSEvent.h>
#import <AppKit/NSImage.h>
#import <Foundation/NSArray.h>
#import <Foundation/NSString.h>
#import "PlaylistView.h"
@implementation PlaylistView : NSTableView
- (id) init
{
if ((self = [super init]))
{
selectionDir = NSOrderedSame;
}
return self;
}
- (id) initWithCoder: (NSCoder *) coder
{
if ((self = [super initWithCoder: coder]))
{
selectionDir = NSOrderedSame;
}
return self;
}
- (NSImage*) dragImageForRows: (NSArray*) dragRows
event: (NSEvent*) dragEvent
dragImageOffset: (NSPoint*) dragImageOffset
{
NSImage *dragImage;
if ([dragRows count] > 1)
{
dragImage = [NSImage imageNamed: @"dragged-songs"];
dragImageOffset->x = -10.0;
}
else
{
dragImage = [NSImage imageNamed: @"dragged-song"];
dragImageOffset->x = -5.0;
}
dragImageOffset->y = 10.0;
return dragImage;
}
- (unsigned int) draggingSourceOperationMaskForLocal: (BOOL) isLocal
{
return ((isLocal)
? (NSDragOperationMove | NSDragOperationGeneric)
: NSDragOperationCopy);
}
- (int) _findFirstSelected
{
int row, count;
row = -1;
count = 0;
while (row == -1 && count < [self numberOfRows])
if ([self isRowSelected: count])
row = count;
else
count++;
return row;
}
- (int) _findLastSelected
{
int row, count;
row = -1;
count = [self numberOfRows] - 1;
while (row == -1 && count > -1)
if ([self isRowSelected: count])
row = count;
else
count--;
return row;
}
- (void) _selectionUpByExtendingIt: (BOOL) keep
{
int max, row;
BOOL selectSingleRow;
max = [self numberOfRows];
if (max > 0)
{
selectSingleRow = NO;
if (selectionDir == NSOrderedDescending)
{
row = [self _findLastSelected];
if (keep)
[self deselectRow: row];
else
selectSingleRow = YES;
}
else
{
if (selectionDir == NSOrderedSame)
selectionDir = NSOrderedAscending;
row = [self _findFirstSelected];
selectSingleRow = YES;
}
if (selectSingleRow && row > 0)
{
row--;
[self selectRow: row byExtendingSelection: keep];
}
[self scrollRowToVisible: row];
[self setNeedsDisplay: YES];
}
}
- (void) _selectionDownByExtendingIt: (BOOL) keep
{
int max, row;
BOOL selectSingleRow;
max = [self numberOfRows];
if (max > 0)
{
selectSingleRow = NO;
if (selectionDir == NSOrderedAscending)
{
row = [self _findFirstSelected];
if (keep)
[self deselectRow: row];
else
selectSingleRow = YES;
}
else
{
if (selectionDir == NSOrderedSame)
selectionDir = NSOrderedDescending;
row = [self _findLastSelected];
selectSingleRow = YES;
}
if (selectSingleRow && row < (max - 1))
{
row++;
[self selectRow: row byExtendingSelection: keep];
}
[self scrollRowToVisible: row];
[self setNeedsDisplay: YES];
}
}
- (void) _selectionTopByExtendingIt: (BOOL) keep
{
int row, count, max;
max = [self numberOfRows];
if (max > 0)
{
if (keep)
{
if (selectionDir == NSOrderedDescending)
row = [self _findFirstSelected] + 1;
else
row = [self _findLastSelected] + 1;
[self deselectAll: self];
for (count = 0; count < row; count++)
[self selectRow: count byExtendingSelection: YES];
}
else
[self selectRow: 0 byExtendingSelection: NO];
selectionDir = NSOrderedAscending;
[self scrollRowToVisible: 0];
[self setNeedsDisplay: YES];
}
}
- (void) _selectionBottomByExtendingIt: (BOOL) keep
{
int row, count, max;
max = [self numberOfRows];
if (max > 0)
{
if (keep)
{
if (selectionDir == NSOrderedAscending)
row = [self _findLastSelected];
else
row = [self _findFirstSelected];
[self deselectAll: self];
for (count = row; count < max; count++)
[self selectRow: count byExtendingSelection: YES];
}
else
[self selectRow: (max - 1) byExtendingSelection: NO];
selectionDir = NSOrderedDescending;
[self scrollRowToVisible: (max - 1)];
[self setNeedsDisplay: YES];
}
}
- (BOOL) performKeyEquivalent: (NSEvent *) event
{
BOOL shiftPressed, result;
unichar character;
id delegate;
result = YES;
shiftPressed = ([event modifierFlags]
& (NSAlphaShiftKeyMask | NSShiftKeyMask));
character = [[event characters] characterAtIndex: 0];
switch (character)
{
case NSUpArrowFunctionKey:
[self _selectionUpByExtendingIt: shiftPressed];
break;
case NSDownArrowFunctionKey:
[self _selectionDownByExtendingIt: shiftPressed];
break;
case NSHomeFunctionKey:
[self _selectionTopByExtendingIt: shiftPressed];
break;
case NSEndFunctionKey:
[self _selectionBottomByExtendingIt: shiftPressed];
break;
case CynthiuneEnterKey:
delegate = [self delegate];
if (delegate
&& [delegate respondsToSelector: @selector (playlistViewActivateSelection:)])
[delegate playlistViewActivateSelection: self];
break;
case NSDeleteFunctionKey:
delegate = [self delegate];
if (delegate
&& [delegate respondsToSelector: @selector (playlistViewDeleteSelection:)])
[delegate playlistViewDeleteSelection: self];
break;
default:
result = [super performKeyEquivalent: event];
}
if ([self numberOfSelectedRows] < 2)
selectionDir = NSOrderedSame;
return result;
}
@end
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