chore: remove warning

[18202781743]

Cannot read property 'hovered' of null

Summary by Sourcery

Bug Fixes:

• Prevent 'Cannot read property "hovered" of null' warning by changing __isVisible to a property alias instead of a boolean property

[deepin-ci-robot]

deepin pr auto review

在提供的代码更改中，主要的变化是将 __isVisible 属性从直接声明改为使用 alias 关键字。这种更改的目的是将 hoverHandler.hovered 的值直接映射到 __isVisible，而不是通过一个中间变量。以下是针对这个更改的一些审查意见：

代码质量

• 可读性：使用 alias 关键字可以使代码更加简洁和易读，因为它直接将一个属性映射到另一个属性，而不需要中间变量。这有助于减少代码的复杂性，并使意图更加明确。

代码性能

• 性能：使用 alias 关键字不会对性能产生显著影响，因为它只是创建了一个属性到另一个属性的引用。然而，如果 hoverHandler.hovered 的值频繁变化，那么这种映射可能会增加一些性能开销，因为每次 hoverHandler.hovered 变化时，__isVisible 都会自动更新。如果这是一个性能瓶颈，可能需要考虑其他优化策略。

代码安全性

• 安全性：使用 alias 关键字不会引入新的安全风险。它只是提供了一种更简洁的方式来访问和更新属性值。

代码维护

• 维护性：使用 alias 关键字可以使代码更容易维护，因为它减少了属性之间的耦合。如果将来需要修改 hoverHandler.hovered 的行为，只需要在一个地方进行修改，而不需要在多个地方进行修改。

其他建议

• 注释：如果 __isVisible 的映射关系对于其他开发者来说不是显而易见的，建议添加一些注释来解释为什么使用 alias 关键字，以及这种映射的具体作用。

总的来说，将 __isVisible 属性从直接声明改为使用 alias 关键字是一个改进，它提高了代码的可读性和简洁性，同时也不会对性能、安全性和维护性产生负面影响。

[sourcery-ai]

Reviewer's Guide

Replaced the manual boolean property for visibility with a direct alias to the hover handler’s hovered state to eliminate null‐reference warnings.

File-Level Changes

Change	Details	Files
Convert __isVisible to a property alias bound to hoverHandler.hovered	Replaced “property bool __isVisible” with “property alias __isVisible” Bound alias directly to hoverHandler.hovered to avoid null dereference	qt6/src/qml/TitleBar.qml

---

Tips and commands

Interacting with Sourcery

• Trigger a new review: Comment @sourcery-ai review on the pull request.
• Continue discussions: Reply directly to Sourcery's review comments.
• Generate a GitHub issue from a review comment: Ask Sourcery to create an
  issue from a review comment by replying to it. You can also reply to a
  review comment with @sourcery-ai issue to create an issue from it.
• Generate a pull request title: Write @sourcery-ai anywhere in the pull
  request title to generate a title at any time. You can also comment
  @sourcery-ai title on the pull request to (re-)generate the title at any time.
• Generate a pull request summary: Write @sourcery-ai summary anywhere in
  the pull request body to generate a PR summary at any time exactly where you
  want it. You can also comment @sourcery-ai summary on the pull request to
  (re-)generate the summary at any time.
• Generate reviewer's guide: Comment @sourcery-ai guide on the pull
  request to (re-)generate the reviewer's guide at any time.
• Resolve all Sourcery comments: Comment @sourcery-ai resolve on the
  pull request to resolve all Sourcery comments. Useful if you've already
  addressed all the comments and don't want to see them anymore.
• Dismiss all Sourcery reviews: Comment @sourcery-ai dismiss on the pull
  request to dismiss all existing Sourcery reviews. Especially useful if you
  want to start fresh with a new review - don't forget to comment
  @sourcery-ai review to trigger a new review!

Customizing Your Experience

Access your dashboard to:

• Enable or disable review features such as the Sourcery-generated pull request
  summary, the reviewer's guide, and others.
• Change the review language.
• Add, remove or edit custom review instructions.
• Adjust other review settings.

Getting Help

• Contact our support team for questions or feedback.
• Visit our documentation for detailed guides and information.
• Keep in touch with the Sourcery team by following us on X/Twitter, LinkedIn or GitHub.

[sourcery-ai]

Hey @18202781743 - 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

---

Sourcery is free for open source - if you like our reviews please consider sharing them ✨

• X
• Mastodon
• LinkedIn
• Facebook

_{Help me be more useful! Please click 👍 or 👎 on each comment and I'll use the feedback to improve your reviews.}

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: 18202781743, mhduiy

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

Details

Needs approval from an approver in each of these files:

• debian/deepin/OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment