feat(ImagePreviewer): move the body end prevent blocked

[ArgoZhang]

Link issues

fixes #7033

Summary By Copilot

Regression?

• Yes
• No

Risk

• High
• Medium
• Low

Verification

• Manual (required)
• Automated

Packaging changes reviewed?

• Yes
• No
• N/A

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• Merge the latest code from the main branch

Summary by Sourcery

Append ImagePreviewer elements to document.body to prevent them from being blocked and ensure they are removed on disposal

Bug Fixes:

• Append the previewer container to document.body in init to avoid it being blocked by other elements

Enhancements:

• Remove the previewer element from the DOM on dispose to clean up after use

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Append the ImagePreviewer container to document.body on initialization to prevent blocking issues and ensure proper teardown by removing it on dispose, alongside adding missing semicolons for consistent code formatting.

Sequence diagram for ImagePreviewer initialization and disposal

sequenceDiagram
participant JS as "ImagePreviewer.razor.js"
participant DOM as "document.body"
participant Data as "Data store"
participant Viewer as "Viewer module"

JS->>DOM: getElementById(id)
alt Element exists
    JS->>Viewer: Viewer.init(el, prevList, config)
    JS->>Data: Data.set(id, viewer)
    JS->>DOM: appendChild(el)
end

Note over JS,DOM: On dispose
JS->>Data: Data.get(id)
JS->>Data: Data.remove(id)
alt viewer exists
    JS->>Viewer: Viewer.dispose(viewer.viewer)
    JS->>DOM: viewer.el.remove()
end

Loading

File-Level Changes

Change	Details	Files
Move preview element to body and remove on dispose	Appended preview element (el) to document.body in init Removed preview element (viewer.el) in dispose after disposing the Viewer instance	src/BootstrapBlazor/Components/ImagePreviewer/ImagePreviewer.razor.js
Add missing semicolons for consistent formatting	Added semicolons after const declarations and return statements Terminated Data.set and Viewer.dispose calls with semicolons Adjusted object literal closures to include semicolons	src/BootstrapBlazor/Components/ImagePreviewer/ImagePreviewer.razor.js

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#7033	Move the ImagePreviewer element to the end of the document body to prevent it from being blocked.	✅

Possibly linked issues

• feat(ImagePreviewer): move the body end prevent blocked #7033: The PR moves the ImagePreviewer element to the document body end, resolving the blocked issue described.
• feat(ImagePreviewer): move the body end prevent blocked #7033: The PR moves the ImagePreviewer element to the body, fixing the blank preview in AvatarUpload by ensuring correct rendering.

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[Copilot]

Pull Request Overview

This PR adds DOM manipulation and improves code consistency in the ImagePreviewer component by adding semicolons and implementing proper element lifecycle management.

Key Changes:

• Added semicolons for JavaScript best practices consistency
• Implemented element appending to document body during initialization
• Added element removal from DOM during disposal

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (4a6cd16) to head (ac1a5f7).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #7034   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          743       743           
  Lines        32470     32470           
  Branches      4500      4500           
=========================================
  Hits         32470     32470           

Flag	Coverage Δ
BB	100.00% <ø> (?)

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