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//
// MTreeDataSource.m
// MySQLGUICommon
//
// Created by Alfredo Kojima on Tue Jul 27 2004.
// Copyright (c) 2004 MySQL AB. All rights reserved.
//
#import "MTreeDataSource.h"
@implementation MTreeItem
+ (MTreeItem*)itemWithTag:(int)tag repr:(NSString*)str
{
return [[MTreeItem alloc] initWithTag:tag repr:str];
}
- (id)initWithTag:(int)tag repr:(NSString*)str
{
self= [super init];
if (self)
{
_tag= tag;
_repr= [str retain];
}
return self;
}
- (int)tag
{
return _tag;
}
- (void)dealloc
{
[_repr release];
[_children release];
[super dealloc];
}
- (MTreeItem*)parent
{
return _parent;
}
- (void)addChild:(MTreeItem*)item
{
if (!_children)
_children= [[NSMutableArray alloc] init];
item->_parent= self;
[_children addObject:item];
}
- (void)removeChild:(MTreeItem*)item
{
[_children removeObject:item];
}
- (NSArray*)children
{
return _children;
}
- (NSString*)repr
{
return _repr;
}
- (void)setValue:(id)value forIdentifier:(NSString*)identifier
{
NSLog(@"MTreeItem setValue:forIdentifier: Not implemented!");
}
- (id)valueForIdentifier:(NSString*)identifier
{
return [self repr];
}
@end
@implementation MSelectableTreeItem
{
@protected
int _selected;
}
- (void)setSelected:(BOOL)flag
{
unsigned int i, c;
_selected= flag ? NSOnState : NSOffState;
if (_children)
{
c= [_children count];
for (i= 0; i < c; i++)
{
[[_children objectAtIndex:i] setSelected:flag];
}
}
}
- (int)selected
{
if (_children)
{
unsigned int i, c= [_children count];
int s= 0, ns= 0;
for (i= 0; i < c; i++)
{
if ([[_children objectAtIndex:i] selected]==1)
s++;
else
ns++;
}
if (s == 0)
return NSOffState;
else if (ns == 0)
return NSOnState;
else
return NSMixedState;
}
return _selected;
}
@end
@implementation MTreeDataSource
- (void)setRoot:(MTreeItem*)root
{
if (_root != root)
{
[_root release];
_root= [root retain];
}
}
- (MTreeItem*)root
{
return _root;
}
- (void)dealloc
{
[_root release];
[super dealloc];
}
- (id)outlineView:(NSOutlineView *)outlineView
child:(int)index
ofItem:(id)item
{
if (item == nil)
return [[_root children] objectAtIndex:index];
else
return [[item children] objectAtIndex:index];
}
- (BOOL)outlineView:(NSOutlineView *)outlineView
isItemExpandable:(id)item
{
if (item == nil)
return _root ? YES : NO;
else
return [item children] ? YES : NO;
}
- (int)outlineView:(NSOutlineView *)outlineView
numberOfChildrenOfItem:(id)item
{
if (item == nil)
return [[_root children] count];
else
return [[item children] count];
}
- (void)outlineView:(NSOutlineView *)outlineView
setObjectValue:(id)object
forTableColumn:(NSTableColumn *)tableColumn
byItem:(id)item
{
[item setValue:object forIdentifier:[tableColumn identifier]];
}
- (id)outlineView:(NSOutlineView *)outlineView
objectValueForTableColumn:(NSTableColumn *)tableColumn
byItem:(id)item
{
return [item valueForIdentifier:[tableColumn identifier]];
}
@end
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