PolymerDart/Lifecycle

PolymerDart/Lifecycle

The PolymerDart lifecycle refers to the various stages and events that occur during the lifespan of a PolymerDart component. Understanding the lifecycle is essential for effective development and management of PolymerDart components.

Creation

When a PolymerDart component is created, several important processes occur:

• Component definition: The component's class is defined, including its properties, observers, and event handlers.
• Constructor: The component's constructor is called, initializing the component's default state and properties.

Initialization

During the initialization stage, the component undergoes the following steps:

• Initialization function: The `initialize` function is called, allowing the component to perform any additional setup or initialization tasks.
• Property observers: The component's property observers are registered, monitoring changes to specific properties and triggering corresponding handler functions.

Ready

The component is now ready to be used and interacts with its environment:

• Attached to the DOM: The component is attached to the Document Object Model (DOM), becoming part of the web page.
• Ready function: The `ready` function is called, indicating that the component has finished initializing and is ready for interaction.
• Event listeners: The component can now listen for and handle various events triggered by user interactions or other components.

Updating

When the component's state or properties change, the updating stage begins:

• Property change: When a property of the component is modified, PolymerDart automatically updates the corresponding parts of the user interface.
• Observer functions: If any observer functions are defined, they are invoked, allowing the component to respond to property changes appropriately.

Detachment

If the component is removed or detached from the DOM, the detachment stage occurs:

• Detached from the DOM: The component is disconnected from the DOM and is no longer part of the visible web page.
• Disconnected function: The `disconnected` function is called, providing an opportunity for the component to clean up any resources or event listeners.

Reattachment

If the component is reattached to the DOM after detachment, the reattachment stage occurs:

• Reattached to the DOM: The component is connected back to the DOM, resuming its place in the web page.
• Attached function: The `attached` function is called, allowing the component to perform any necessary setup for reattachment.

It is important to note that during the lifecycle stages, the component may also receive and handle various events, trigger other actions, or interact with its parent or child components.