feat: use DebounceButton for the crop button in the CropToolbar #425

guoyingtao · 2024-11-06T21:55:23Z

Summary by CodeRabbit

New Features
- Introduced a specialized crop button with built-in protection against rapid repeated taps, ensuring smoother and more reliable cropping actions.
Improvements
- Enhanced button creation to support custom button types and more flexible event handling within the cropping interface.

Copilot

Pull Request Overview

This PR introduces a new DebounceButton to prevent multiple rapid taps on the crop button and updates the CropToolbar to use it.

Added DebounceButton.swift implementing debouncing functionality
Updated CropToolbar.swift to use DebounceButton and assign crop operations via closures
Updated the project file to reference the new DebounceButton.swift

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
Sources/Mantis/CropViewController/DebounceButton.swift	New file implementing debouncing for button taps
Sources/Mantis/CropViewController/CropToolbar.swift	Updated crop button type and setup using DebounceButton
Mantis.xcodeproj/project.pbxproj	Added project references for DebounceButton

Copilot · 2025-06-19T08:13:30Z

Sources/Mantis/CropViewController/DebounceButton.swift

+        isEnabled = false        
+        cropOperation()
+
+        DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) { [weak self] in


Consider using debounceInterval instead of the hardcoded 0.5 seconds for re-enabling the button, to ensure consistent debounce behavior when the interval is customized.

Suggested change

DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) { [weak self] in

DispatchQueue.main.asyncAfter(deadline: .now() + self?.debounceInterval ?? 0.5) { [weak self] in

guoyingtao · 2025-06-19T08:18:02Z

@coderabbitai review

coderabbitai · 2025-06-19T08:18:07Z

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coderabbitai · 2025-06-19T08:18:10Z

Walkthrough

A new DebounceButton class was introduced to handle debounced tap events, preventing rapid repeated actions. The CropToolbar now uses this button for cropping, switching from the traditional target-action pattern to a closure-based approach. The Xcode project file was updated to include the new source file in the build process.

Changes

File(s)	Change Summary
Mantis.xcodeproj/project.pbxproj	Added `DebounceButton.swift` to the project, build phases, and source groups.
Sources/Mantis/CropViewController/DebounceButton.swift	Introduced new `DebounceButton` class with debounce and closure-based crop operation functionality.
Sources/Mantis/CropViewController/CropToolbar.swift	Replaced `UIButton` with `DebounceButton` for crop action; refactored button creation logic.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant DebounceButton
    participant CropToolbar

    User->>DebounceButton: Tap Crop Button
    DebounceButton->>DebounceButton: Check debounce interval & processing state
    alt Not processing and interval elapsed
        DebounceButton->>DebounceButton: Disable button, set processing
        DebounceButton->>CropToolbar: Execute crop operation closure
        Note right of DebounceButton: Wait 0.5 seconds
        DebounceButton->>DebounceButton: Enable button, reset processing
    else Rapid tap or processing
        DebounceButton-->>User: Ignore tap
    end

Poem

A button that bounces, but only just once,
No more frantic crops from a harebrained dunce!
With closure in paw, and debounce in mind,
The toolbar’s now smarter, more gentle, more kind.
So tap with assurance, no need to rush—
The crops will be perfect, no double-tap fuss!

🐇✨

📜 Recent review details

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Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 941d4c4 and 4cea1c5.

📒 Files selected for processing (3)

Mantis.xcodeproj/project.pbxproj (4 hunks)
Sources/Mantis/CropViewController/CropToolbar.swift (3 hunks)
Sources/Mantis/CropViewController/DebounceButton.swift (1 hunks)

🔇 Additional comments (7)

Sources/Mantis/CropViewController/DebounceButton.swift (2)

10-23: Well-structured debouncing implementation.

The class design with configurable debounce interval, processing state tracking, and closure-based operation is well thought out. The separation of concerns between debouncing logic and crop operation execution is clean.

57-74: Robust debounce logic with proper state management.

The debouncing implementation correctly prevents rapid taps by checking both the time interval and processing state. The early return pattern makes the logic clear and efficient.

Mantis.xcodeproj/project.pbxproj (1)

79-79: Standard project file integration for new source file.

The Xcode project file correctly includes all necessary references for the new DebounceButton.swift file - build file reference, file reference, group membership, and sources build phase inclusion.

Also applies to: 217-217, 385-385, 762-762

Sources/Mantis/CropViewController/CropToolbar.swift (4)

94-94: Good type change to enable debouncing functionality.

Changing the crop button type from UIButton to DebounceButton is the correct approach to integrate the debouncing behavior while maintaining type safety.

96-101: Clean closure-based integration replaces target-action pattern.

The switch from target-action selectors to closure-based setCropOperation is appropriate for the debouncing button. The weak self capture prevents retain cycles and the existing crop(_:) method is correctly reused.

Also applies to: 105-108

291-291: Well-designed generic method supports multiple button types.

Making createOptionButton generic with <T: UIButton> is an elegant solution that allows creating both standard UIButton instances and the new DebounceButton while maintaining type safety and code reuse.

Also applies to: 297-297

329-332: Optional action parameter maintains backward compatibility.

Making the action parameter optional and conditionally adding the target is a good design that supports both the traditional target-action pattern for other buttons and the closure-based approach for the debounce button.

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guoyingtao added 2 commits November 6, 2024 16:54

feat: use DebounceButton for the crop button in the CropToolbar

108c430

refactor: solve a compile warning and remove some comments

4cea1c5

guoyingtao mentioned this pull request Nov 6, 2024

high watermark memory limit exceeded #399

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guoyingtao requested a review from Copilot June 19, 2025 08:13

Copilot AI reviewed Jun 19, 2025

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	DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) { [weak self] in
	DispatchQueue.main.asyncAfter(deadline: .now() + self?.debounceInterval ?? 0.5) { [weak self] in

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