First attempt for searchable QRadioElement

quickdialog/QRadioElement.h

@@ -30,10 +30,13 @@
 @property(nonatomic, assign, readwrite) NSInteger selected;
 @property(nonatomic, retain) NSArray *values;
 @property(nonatomic, strong) NSArray *itemsImageNames;
+@property(nonatomic) BOOL searchable;
 
 - (QRadioElement *)initWithDict:(NSDictionary *)valuesDictionary selected:(int)selected title:(NSString *)title;
 
 - (void)createElements;
+- (void)hideElementsNotMatchingSearchKey:(NSString*)searchKey;
+- (void)showAllElements;
 
 - (NSObject *)selectedValue;
 - (void)setSelectedValue:(NSObject *)aSelected;

quickdialog/QRadioElement.m

@@ -24,6 +24,7 @@ @implementation QRadioElement {
 @synthesize values = _values;
 @synthesize items = _items;
 @synthesize itemsImageNames = _itemsImageNames;
+@synthesize searchable = _searchable;
 
 
 - (void)createElements {
@@ -42,6 +43,34 @@ - (void)createElements {
     }
 }
 
+// NOTE: I'm not preserving "old" hidden property values, but it's important as they could've been
+//       hidden on purpose in other context
+- (void)hideElementsNotMatchingSearchKey:(NSString *)searchKey {
+
+    for (QRadioItemElement *element in _internalRadioItemsSection.elements) {
+
+        NSRange range = [element.title rangeOfString:searchKey
+                                             options:NSCaseInsensitiveSearch];
+
+        if (range.location == NSNotFound) {
+
+            [element setHidden:YES];
+        } else {
+
+            [element setHidden:NO];
+        }
+    }
+}
+
+// NOTE: similar as above
+- (void)showAllElements {
+
+    for (QRadioItemElement *element in _internalRadioItemsSection.elements) {
+
+        [element setHidden:NO];
+    }
+}
+
 -(void)setItems:(NSArray *)items {
     _items = items;
     [self createElements];

quickdialog/QRadioItemElement.m

@@ -64,6 +64,8 @@ - (void)selected:(QuickDialogTableView *)tableView controller:(QuickDialogContro
         [_radioElement fieldDidEndEditing];
         tableView.userInteractionEnabled = NO;
 
+        [_radioElement showAllElements];
+
         [NSTimer scheduledTimerWithTimeInterval:0.3
             target:controller
             selector:@selector(popToPreviousRootElement)

quickdialog/QuickDialogTableView.h

@@ -21,7 +21,8 @@
 @class QElement;
 @class QRootElement;
 
-@interface QuickDialogTableView : UITableView {
+// NOTE: Conforming to protocols here, but could be refactored similar as quickDialogDatasource and delegate
+@interface QuickDialogTableView : UITableView <UISearchDisplayDelegate, UISearchBarDelegate> {
 
 
 @private

quickdialog/QuickDialogTableView.m

@@ -17,6 +17,9 @@
 
 @implementation QuickDialogTableView {
     BOOL _deselectRowWhenViewAppears;
+
+    UISearchBar *_searchBar;
+    UISearchDisplayController *_searchDisplayController;
 }
 
 @synthesize root = _root;
@@ -38,12 +41,57 @@ - (QuickDialogTableView *)initWithController:(QuickDialogController *)controller
 
         quickDialogDelegate = [[QuickDialogTableDelegate alloc] initForTableView:self];
         self.delegate = quickDialogDelegate;
+
+        if ([self.root respondsToSelector:@selector(searchable)]) {
+
+            BOOL isSearchable = [[self.root valueForKey:@"searchable"] boolValue];
+
+            if (isSearchable) {
+
+                _searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
+                _searchDisplayController = [[UISearchDisplayController alloc] initWithSearchBar:_searchBar
+                                                                             contentsController:_controller];
+
+                _searchBar.delegate = self;
+                _searchDisplayController.delegate = self;
+                _searchDisplayController.searchResultsDataSource = self.dataSource;
+                _searchDisplayController.searchResultsDelegate = self.delegate;
+
+                self.tableHeaderView = _searchBar;
+            }
+        }
 
         self.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
     }
     return self;
 }
 
+#pragma mark UISearchBarDelegate members
+
+- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {
+
+    if ([self.root respondsToSelector:@selector(showAllElements)]) {
+
+        [self.root performSelector:@selector(showAllElements)];
+    }
+
+    [self reloadData];
+}
+
+#pragma mark UISearchDisplayDelegate memebers
+
+- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {
+
+    if ([self.root respondsToSelector:@selector(hideElementsNotMatchingSearchKey:)]) {
+
+        [self.root performSelector:@selector(hideElementsNotMatchingSearchKey:)
+                        withObject:searchString];
+    }
+
+    return YES;
+}
+
+
 -(void)setRoot:(QRootElement *)root{
     _root = root;
     for (QSection *section in _root.sections) {

sample/SampleDataBuilder.m

@@ -297,6 +297,11 @@ + (QElement *)createRadioRoot {
     QRadioElement *elementWithAction = [[QRadioElement alloc] initWithItems:[NSArray arrayWithObjects:@"Ferrari", @"McLaren", @"Lotus", nil] selected:0 title:@"WithAction"];
     elementWithAction.controllerAction = @"exampleAction:";
     [section1 addElement:elementWithAction];
+
+    QRadioElement *elementWithFilter = [[QRadioElement alloc] initWithItems:@[@"Ferrari", @"McLaren", @"Lotus"] selected:0 title:@"Filtered"];
+    elementWithFilter.searchable = YES;
+    [section1 addElement:elementWithFilter];
+
     [root addSection:section1];
 
     QRadioSection *section2 = [[QRadioSection alloc] initWithItems:[NSArray arrayWithObjects:@"Football", @"Soccer", @"Formula 1", nil] selected:0 title:@"Sport"];