fix: Lack of diagonal operation functionality.

[wjyrich]

as title.

Log: PMS-BUG-306837

Summary by Sourcery

Fix horizontal navigation boundaries by adding wrap-around behavior for left and right arrow keys and remove the obsolete key-repeat timer.

Bug Fixes:

• Wrap grid view navigation to the first item when pressing right on the last item
• Wrap grid view navigation to the last item when pressing left on the first item

Enhancements:

• Remove the unused key-repeat Timer to simplify key handling logic

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 代码中移除了keyTimer定时器，但未提供替代逻辑来处理按键重复事件。
• 在处理Qt.Key_Right和Qt.Key_Left按键时，直接修改了currentIndex，可能导致界面更新问题。

是否建议立即修改:

• 是

建议的修改:

• 如果需要处理按键重复事件，应该重新实现keyTimer的逻辑，或者使用其他机制来处理。
• 在修改currentIndex之前，应该确保界面能够正确更新，可能需要调用GridView的updateCurrentIndex方法。
• 添加注释来解释为什么在currentIndex达到边界时需要重置为0，以及为什么在处理Qt.Key_Left时需要将currentIndex设置为gridView.count - 1。

[sourcery-ai]

Hey @wjyrich - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[sourcery-ai]

Reviewer's Guide

This PR refactors the arrow key navigation by removing the generic debounce timer and multi-directional key handler, and adds explicit horizontal wrap-around behavior when navigating past the first or last grid item.

File-Level Changes

Change	Details	Files
Removed generic arrow key handling and debounce timer for key events	Deleted conditional that checked all four arrow keys Removed keyTimer start and event.accepted logic for repeated presses Eliminated the keyTimer and its Timer definition	qml/GridViewContainer.qml
Implemented horizontal wrap-around navigation on Left/Right arrow presses	Added condition to reset currentIndex to 0 when pressing Right on the last item Added condition to move currentIndex to the last item when pressing Left on the first item Marked handled events as accepted to suppress default behavior	qml/GridViewContainer.qml

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[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: BLumia, wjyrich

The full list of commands accepted by this bot can be found here.

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• debian/deepin/OWNERS

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