Formotion Picker with search bar

picker_with_search_row.rb

module Formotion
  module RowType
    class PickerWithSearchRow < PickerRow
      include RowType::ItemsMapper

      def after_build(cell)
        super
        @items_for_search = items 
        keyboardDoneButtonView             = UIToolbar.new
        keyboardDoneButtonView.barStyle    = UIBarStyleBlack
        keyboardDoneButtonView.translucent = true
        keyboardDoneButtonView.tintColor   = nil
        keyboardDoneButtonView.sizeToFit
 
        @txtSearch = UISearchBar.alloc.initWithFrame([[15, 7], [240, 31]])
        @txtSearch.tag = 1
        @txtSearch.barStyle = UIBarStyleBlackTranslucent
        @txtSearch.backgroundColor = UIColor.clearColor
        @txtSearch.delegate = self
        @txtSearch.userInteractionEnabled = true

        @copyListOfItems = []
        doneButton = UIBarButtonItem.alloc.initWithTitle("Done", style:UIBarButtonItemStyleDone,  target:self, action: 'picker_done_clicked')
        
        spacer1    = UIBarButtonItem.alloc.initWithBarButtonSystemItem(UIBarButtonSystemItemFlexibleSpace, target:self, action: nil)
        spacer     = UIBarButtonItem.alloc.initWithBarButtonSystemItem(UIBarButtonSystemItemFlexibleSpace, target:self, action: nil)
        keyboardDoneButtonView.setItems([spacer, spacer1, doneButton])
        keyboardDoneButtonView.addSubview(@txtSearch)
        
        row.text_field.inputAccessoryView = keyboardDoneButtonView
      end
 
      def picker_done_clicked
        # 'jump' to next input field if one exists
        #if row.next_row && row.next_row.text_field
        #row.next_row.text_field.becomeFirstResponder
        #else
        # just hide the keyboard...
        row.text_field.resignFirstResponder
        #end
      end

      def searchBarTextDidBeginEditing(theSearchBar)
        @searching = false
        letUserSelectRow = false
      end

      def searchBar(theSearchBar, textDidChange:searchText)
          
        @copyListOfItems.removeAllObjects
        
        if searchText.length > 0 
          @searching = true
          letUserSelectRow = true
          self.searchTableView(searchText.downcase)
        else       
          @searching = false
          letUserSelectRow = false
        end
        
        picker.reloadAllComponents
      end

      def searchBarSearchButtonClicked(searchBar)
        self.btnDoneClick
      end

      def searchTableView(searchText)
        p searchText      
        @items_for_search.each do |t, v|  
          if v.downcase.include?(searchText)
            @copyListOfItems << v
          end  
        end
        p @copyListOfItems
        picker.reloadAllComponents
      end

      def textFieldShouldReturn(textField)
        p "RESIGN"   
        textField.resignFirstResponder
        true
      end

      def btnDoneClick
                  
        if @searching
          
          p "SEARCHING"
          
          if @copyListOfItems.count > 0
            p "1" 
            strSelectedValue = @copyListOfItems[picker.selectedRowInComponent(0)]
            #p strSelectedValue
            self.row.items = @copyListOfItems
            select_picker_value(@copyListOfItems.first)
          else 
            p "2"  
            # if not results , then set the original list
            p @items_for_search
            self.row.items = @items_for_search

          end
            
        else
          # maybe pre select some option ??
        end
        
        row.text_field.resignFirstResponder # hides keyboard
        row.text_field.becomeFirstResponder # show picker

      end

      def numberOfComponentsInPickerView(pickerView) 
        1
      end

      def pickerView(pickerView, numberOfRowsInComponent:component)
        if @searching
          @copyListOfItems.count
        else
          self.items.count
        end
      end

      def pickerView(pickerView, titleForRow:row, forComponent:component)
        if @searching
          @copyListOfItems[row]
        else
          item_names[row]
        end
      end

      def item_names
        self.items.map{ |name, value| name }
      end

    end
  end
end