chore: change item delegate for taskmanager from DropArea to Item

[BLumia]

将 taskmanager 组件的 item delegate 调整为 Item

这里应该是引入 launcherDndDropArea 之前的逻辑，由每个 item 自己处理被拖拽到图标上后的移动行为。现在应该没有实际再被使用了（拖拽事件会被 launcherDndDropArea 接受并处理，不会到 Item 自己的 DropArea 上），所以直接将其调整回 Item。

Summary by Sourcery

Revert the TaskManager item delegate from DropArea to Item and remove its unused drag-and-drop code.

Chores:

• Change TaskManager item delegate type from DropArea to Item.
• Remove unused keys property and onEntered handler now handled by launcherDndDropArea.

[sourcery-ai]

Reviewer's Guide

Revert taskmanager item delegate from DropArea to Item and remove obsolete drag-and-drop logic now handled by launcherDndDropArea.

Class diagram for removal of drag-and-drop logic from delegate

classDiagram
    class DropArea {
        onEntered(drag)
    }
    class Item {
        // No onEntered handler
    }
    DropArea : - onEntered(drag)
    Item : // onEntered removed

Loading

File-Level Changes

Change	Details	Files
Switched item delegate from DropArea back to Item	Changed delegate declaration from DropArea to Item Adjusted delegateRoot reference accordingly	panels/dock/taskmanager/package/TaskManager.qml
Removed unused drag-and-drop handlers and properties	Deleted keys property for DnD MIME type Removed onEntered handler and its TODO comment	panels/dock/taskmanager/package/TaskManager.qml

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[sourcery-ai]

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

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[deepin-ci-robot]

deepin pr auto review

代码审查意见：

1. 代码注释：

   • 在onEntered函数中，注释表明该函数实际上未被使用，并且建议将delegateRoot的类型从DropArea更改为Item。建议在代码中添加一个TODO注释，以便以后进行必要的更改。

2. 代码重构：

   • 将DropArea更改为Item可能会影响拖放功能。如果DropArea是必要的，应该保留它，或者提供替代的拖放处理逻辑。
   • 如果DropArea确实不需要，应该移除相关的代码，以避免混淆。

3. 性能优化：

   • relayoutWorkaroundTimer.start()在onCountChanged事件中被调用，如果这个操作是昂贵的，应该考虑是否有必要每次都启动计时器，或者是否有更高效的方式来处理布局变化。

4. 代码可读性：

   • itemId !== taskmanager.Applet.desktopIdToAppId(launcherDndDropArea.launcherDndDesktopId)这行代码可能需要一些注释来解释其目的，以便其他开发者理解。

5. 安全性：

   • 没有明显的安全漏洞，但是确保所有用户输入都经过适当的验证和清理，以防止潜在的注入攻击。

6. 逻辑一致性：

   • 确保所有相关的逻辑都保持一致，特别是如果DropArea被替换为Item，需要确保拖放功能在其他地方得到正确处理。

综上所述，建议在代码中添加必要的注释，并确保所有功能都按照预期工作。如果DropArea被替换为Item，需要确保相关的功能仍然可用，并且没有引入新的问题。

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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

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