Flex 4 Collection Change Example


    

        = 0) {
                    ac.removeItemAt(dg.selectedIndex);
            }
        }
    
        // Update an existing person in the ArrayCollection.
        public function updatePerson():void {
            // Make sure an item is selected.
            if (dg.selectedItem !== null) {
                ac.setItemAt({first:firstInput.text, last:lastInput.text,
                    email:emailInput.text}, dg.selectedIndex);
            }
        }
    
        // The change event listener for the DataGrid.
        // Clears the text input controls and updates them with the contents
        // of the selected item.
        public function dgChangeHandler():void {
            clearInputs();
            firstInput.text = dg.selectedItem.first;
            lastInput.text = dg.selectedItem.last;
            emailInput.text = dg.selectedItem.email;
        }
    
        // Clear the text from the input controls.
        public function clearInputs():void {
            firstInput.text = "";
            lastInput.text = "";
            emailInput.text = "";
        }

        // The labelFunction for the ComboBox;
        // Puts first and last names in the ComboBox.
        public function myLabelFunc(item:Object):String {
            return item.first + " " + item.last;
        }
        ]]>