Mobile Scrolllist Mobilelistitemrenderer

MobileListItemRenderer

MobileListItemRenderer is an ActionScript class designed for handling the rendering and interaction logic for list items in a mobile scroll list. This class extends MovieClip and manages user input events such as mouse presses and releases.

Filename

📄 MobileListItemRenderer.as

Class Definition

package Mobile.ScrollList {
    import flash.display.MovieClip;
    import flash.events.Event;
    import flash.events.MouseEvent;
    import flash.text.TextField;

    public class MobileListItemRenderer extends MovieClip {
        // Class code here...
    }
}

Properties

Property	Type	Access	Description
textField	TextField	public	The text field associated with the list item.
_data	Object	protected	Underlying data representing the list item.
_mouseDownPos	Number	private	Stores the mouse down position.
_mouseUpPos	Number	private	Stores the mouse up position.
DELTA_MOUSE_POS	int	private	Constant representing the allowable delta for mouse position.

Methods

Constructor

MobileListItemRenderer

public function MobileListItemRenderer() {
    super();
}

Data Access

get data()

• Returns: Object - The current _data of the list item.

Reset

reset()

• Resets the list item and adds necessary event listeners.

Set Data

setData(data:Object)

• Parameters: data - The data object to be set for the list item.
• Sets the _data property and updates the visual state if data is not null.

Set Visual

setVisual()

• Placeholder function intended to be overridden to define how the list item should visually respond to data changes.

Event Handlers

itemPressHandler(e:MouseEvent)

• Handles the mouse down event on a list item.
• Parameters: e - The MouseEvent object.

itemReleaseHandler(e:MouseEvent)

• Handles the mouse up event on a list item.
• Parameters: e - The MouseEvent object.

onEnterFrame(e:Event)

• Continuously handles the frame update event to track if interactions are outside the list item’s boundaries.
• Parameters: e - The Event object.

Selection Management

selectItem()

• Placeholder function for item selection logic.

unselectItem()

• Placeholder function for item unselection logic.

pressItem()

• Placeholder function for item press logic.

Destruction

destroy(e:Event)

• Cleans up event listeners when the list item is removed from the stage.
• Parameters: e - The Event object.

Example Usage

var listItem:MobileListItemRenderer = new MobileListItemRenderer();
listItem.setData({label: "Option 1", value: 1, clickable: true});
listItem.reset();
addChild(listItem);

Note: The setVisual(), selectItem(), unselectItem(), and pressItem() methods are left as placeholders in this class and should be overridden in a subclass to provide the specific visual updates and behaviors required.

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🌟 Best Practices: Always ensure to remove event listeners properly in the destroy method to prevent memory leaks. The use of placeholders for visual updates encourages a flexible design that can be adapted to specific use cases.