forked from gonzoua/AudioBookBinder
/
NSOutlineView_Extension.m
144 lines (120 loc) · 3.95 KB
/
NSOutlineView_Extension.m
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//
// NSOutlineView_Extension.m
// AudioBookBinder
//
// Created by Oleksandr Tymoshenko on 10-02-14.
// Copyright 2010 Bluezbox Software. All rights reserved.
//
#import "NSOutlineView_Extension.h"
@implementation NSOutlineView(MyExtensions)
- (NSArray *) selectedItems {
NSMutableArray *items = [NSMutableArray array];
NSIndexSet *selectedRows = [self selectedRowIndexes];
if (selectedRows != nil) {
for (NSInteger row = [selectedRows firstIndex];
row != NSNotFound; row = [selectedRows indexGreaterThanIndex:row]) {
[items addObject:[self itemAtRow:row]];
}
}
return items;
}
- (void)setSelectedItem:(id)item {
NSInteger row = [self rowForItem:item];
if (row >= 0)
[self selectRowIndexes:[NSIndexSet indexSetWithIndex:row] byExtendingSelection:NO];
}
- (void)setSelectedItems:(NSArray *)items {
NSMutableIndexSet *newSelection = [[NSMutableIndexSet alloc] init];
for (NSInteger i = 0; i < [items count]; i++) {
NSInteger row = [self rowForItem:[items objectAtIndex:i]];
if (row >= 0) {
[newSelection addIndex:row];
}
}
[self selectRowIndexes:newSelection byExtendingSelection:NO];
[newSelection release];
}
- (void)keyDown:(NSEvent*)event_ {
BOOL isDeleteKey = NO;
BOOL isCollapseKey = NO;
BOOL isExpandKey = NO;
NSString *eventCharacters = [event_ characters];
if ([eventCharacters length]) {
switch ([eventCharacters characterAtIndex:0]) {
case NSDeleteFunctionKey:
case NSDeleteCharFunctionKey:
case NSDeleteCharacter:
isDeleteKey = YES;
break;
case NSLeftArrowFunctionKey:
isCollapseKey = YES;
break;
case NSRightArrowFunctionKey:
isExpandKey = YES;
break;
default:
break;
}
}
if (isDeleteKey)
[self.delegate delKeyDown:self];
else if (isCollapseKey)
[self doCollapse];
else if (isExpandKey)
[self doExpand];
else
[super keyDown:event_];
}
- (void)doExpand
{
NSIndexSet *selectedRows = [self selectedRowIndexes];
if (selectedRows == nil)
return;
NSMutableArray *items = [[NSMutableArray alloc] init];
for (NSInteger row = [selectedRows firstIndex];
row != NSNotFound; row = [selectedRows indexGreaterThanIndex:row]) {
id item = [self itemAtRow:row];
if([self isExpandable:item])
[items addObject:item];
}
for(id item in items)
[self expandItem:item];
[items release];
}
- (void)doCollapse
{
NSIndexSet *selectedRows = [self selectedRowIndexes];
if (selectedRows == nil)
return;
if ([selectedRows count] == 1) {
NSInteger row = [selectedRows firstIndex];
id item = [self itemAtRow:row];
// select chapter row if it's a file and if it's a chapter - collapse
if ([self isExpandable:item])
[self collapseItem:item];
else {
id parent = [self parentForItem:item];
if (parent != nil)
[self setSelectedItem:parent];
}
}
else {
// multiple selection rules:
// - if only !expandable items - ignore
// - collapse and select all expandable items
NSMutableArray *items = [[NSMutableArray alloc] init];
for (NSInteger row = [selectedRows firstIndex];
row != NSNotFound; row = [selectedRows indexGreaterThanIndex:row]) {
id item = [self itemAtRow:row];
if([self isExpandable:item])
[items addObject:item];
}
if ([items count]) {
for(id item in items)
[self collapseItem:item];
[self setSelectedItems:items];
}
[items release];
}
}
@end