Events and Callbacks

This feature exposes events and callbacks that allow developers to execute custom logic in response to key moments in the control's lifecycle, such as the completion of animations or other interaction

Overview

The Events and Callbacks feature provides a mechanism for developers to hook into the control’s behavior and receive notifications when specific events occur. In the provided code, two primary events are available: ParticleAnimationCompleted and HoverAnimationCompleted. These events serve as callbacks that are triggered when the respective animations finish. This allows developers to chain actions, update UI elements, or log activity in synchronization with the control's visual transitions, thereby enhancing the interactivity and responsiveness of the application.

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Event Summary

Event Name	Delegate Type	Trigger Condition	Description
ParticleAnimationCompleted	EventHandler	When the particle effect animation completes	Signals that the particle burst effect has fully run its course after a button click.
HoverAnimationCompleted	EventHandler	When the hover animation reaches its final state	Notifies subscribers that the hover animation has finished transitioning when the mouse enters/leaves.

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Key Points

Key Point	Explanation
Immediate Callback Notifications	Events are raised at the end of key animations, allowing for real-time updates or transitions based on the control’s state.
Decoupling of Logic and Presentation	By using events as callbacks, developers can separate the animation logic from business logic, leading to cleaner code organization.
Flexible Integration	These events can be used to trigger additional UI updates, start new animations, or execute other callback functions seamlessly.

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Best Practices

Best Practice	Explanation
Subscribe during initialization	Attach event handlers as part of the control’s setup process to ensure that no callbacks are missed during runtime.
Keep event handlers efficient	Ensure that the code inside event handlers executes quickly to maintain UI responsiveness and avoid blocking the main thread.
Unsubscribe appropriately	Detach event handlers when they are no longer needed or when the control is disposed to prevent memory leaks.

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Common Pitfalls

Pitfall	Explanation
Neglecting to unsubscribe	Failing to detach event handlers can lead to memory leaks, especially if the control is removed or recreated multiple times.
Overloading event handlers with heavy logic	Complex or long-running operations inside an event handler may delay subsequent animations or cause UI freezes.
Mixing UI logic with business logic	Embedding extensive business logic within event callbacks can lead to tightly coupled code, making future maintenance more challenging.

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Usage Scenarios

Scenario	How to Implement	Code Example
Logging animation completions	Attach event handlers that log messages or update status indicators when animations finish, allowing for better debugging and user feedback.	csharp<br>// Log the completion of animations<br>navForwardButton.ParticleAnimationCompleted += (sender, e) => { Console.WriteLine("Particle animation completed."); };<br>navForwardButton.HoverAnimationCompleted += (sender, e) => { Console.WriteLine("Hover animation completed."); };<br>
Triggering subsequent UI actions	Use the events to enable or trigger further UI updates (e.g., enabling buttons, updating labels) after an animation has completed.	csharp<br>// Enable a control after the particle animation finishes<br>navForwardButton.ParticleAnimationCompleted += OnParticleCompleted;<br><br>private void OnParticleCompleted(object sender, EventArgs e)<br>{<br> someOtherControl.Enabled = true;<br>}<br>
Chaining animations	Synchronize multiple animation sequences by starting a secondary animation only after receiving the callback from the primary animation.	csharp<br>// Start a secondary animation after hover animation completes<br>navForwardButton.HoverAnimationCompleted += (sender, e) => { StartSecondaryAnimation(); };<br>

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Integration Example

Below is an extensive code example demonstrating how to integrate and leverage the Events and Callbacks feature in a .NET WinForms application:

using System;
using System.Drawing;
using System.Windows.Forms;
using SiticoneNetFrameworkUI;

namespace WinFormsEventsCallbacksDemo
{
    public partial class MainForm : Form
    {
        // Declare the custom navigation forward button.
        private SiticoneNavForwardButton navForwardButton;
        private Label statusLabel;

        public MainForm()
        {
            InitializeComponent();
            InitializeControls();
        }

        private void InitializeControls()
        {
            // Instantiate and configure the navigation forward button.
            navForwardButton = new SiticoneNavForwardButton
            {
                Location = new Point(50, 50),
                Size = new Size(40, 40),
                // Enable animation effects that trigger the events.
                EnableParticles = true,
                EnableRippleEffect = true,
                EnablePulseEffect = true
            };

            // Instantiate a label to display status messages.
            statusLabel = new Label
            {
                Location = new Point(50, 110),
                Size = new Size(300, 30),
                Text = "Animation status will appear here."
            };

            // Subscribe to the animation callback events.
            navForwardButton.ParticleAnimationCompleted += OnParticleAnimationCompleted;
            navForwardButton.HoverAnimationCompleted += OnHoverAnimationCompleted;

            // Add the controls to the form.
            Controls.Add(navForwardButton);
            Controls.Add(statusLabel);
        }

        // Event handler for particle animation completion.
        private void OnParticleAnimationCompleted(object sender, EventArgs e)
        {
            // Update the UI or perform additional logic after the particle animation completes.
            statusLabel.Text = $"Particle animation completed at {DateTime.Now.ToLongTimeString()}";
        }

        // Event handler for hover animation completion.
        private void OnHoverAnimationCompleted(object sender, EventArgs e)
        {
            // Update the UI or trigger subsequent animations after the hover animation completes.
            statusLabel.Text = $"Hover animation completed at {DateTime.Now.ToLongTimeString()}";
        }

        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.Run(new MainForm());
        }
    }
}

In this example, the navigation button is configured with full animation effects. The event handlers update a status label to indicate when each animation completes, demonstrating how callbacks can be used to trigger further UI updates or logic.

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Review

Aspect	Comments
Functionality	The events provide precise notifications when key animations complete, allowing for timely execution of follow-up actions.
Integration	With minimal setup required, subscribing to these events is straightforward, making it easy to integrate them into existing workflows.
Customization Flexibility	The callback mechanism allows developers to decouple animation logic from business logic, offering a clean and modular design.

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Summary

The Events and Callbacks feature is a powerful tool that enhances interactivity by notifying developers when significant animations or interactions have completed. By subscribing to events like ParticleAnimationCompleted and HoverAnimationCompleted, developers can seamlessly chain UI updates, trigger additional animations, or log activity, leading to a dynamic and responsive user interface.

Summary Point	Explanation
Asynchronous Feedback	The control provides immediate callbacks upon animation completion, ensuring that subsequent actions can be executed in a timely manner.
Simplified UI Coordination	Event callbacks allow for modular design by separating visual effects from subsequent business or UI logic.
Ease of Integration	Minimal code is required to subscribe and react to these events, making it simple to enhance the overall interactivity of the application.

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Additional Information

Section	Details
Documentation References	This documentation is based solely on the provided source code, with focus on the ParticleAnimationCompleted and HoverAnimationCompleted events.
Extensibility	Developers can build upon these events by integrating them with additional animations or UI components for complex interactions.
Testing Recommendations	Test the events under various scenarios to ensure that the callbacks are fired as expected, and verify that event handlers execute efficiently.

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By following this comprehensive documentation and utilizing the provided code examples, developers can effectively integrate and leverage the Events and Callbacks feature in their .NET WinForms applications, ensuring a responsive, coordinated, and engaging user interface.