Updated bookmark icon to be more visible in dark mode

[nbradbury]

Fixes CMM-1043

In dark mode, the bookmark icon in the saved posts empty view should be lighter. This PR addresses this.

Before

After

Here's the "after" shot in light mode:

[nbradbury]

@claude

[claude]

Claude finished @nbradbury's task —— View job

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Code Review Complete ✓

I've reviewed this PR that improves the bookmark icon visibility in dark mode for the saved posts empty view. Here's my comprehensive analysis:

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Summary

The implementation is solid and well-executed. The changes appropriately address the dark mode visibility issue by dynamically tinting the bookmark icon based on the theme's colorOnBackground attribute with reduced opacity (150/255 ≈ 59%).

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Code Quality ✓

Strengths:

• Clean, focused change that solves the specific problem
• Proper use of Material theme attributes (MaterialR.attr.colorOnBackground) ensures consistency across themes
• The getColorFromAttribute extension function is the correct approach for theme-aware coloring
• Code is readable and follows Kotlin conventions

Minor observations:

• The force unwrap (drawable!!) at line 1859 assumes the drawable is non-null after previous null-safe operations. While safe in practice (the drawable resource exists), the logic could be slightly more defensive:

  drawable?.let { d ->
      d.setTint(tint)
      d.alpha = 150
      d.setBounds(...)
      ssb.setSpan(ImageSpan(d), ...)
  }

  However, this is a minor point and the current approach is acceptable given the context.

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Security ✓

No security concerns. The change only affects UI rendering using theme attributes.

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Performance ✓

• Negligible performance impact
• Theme attribute resolution is cached by Android
• The tinting operation is lightweight and only executed when displaying the empty view

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Testing ⚠️

Observations:

• No unit tests found for ReaderPostListFragment
• The change affects UI rendering which is typically verified through:
  • Manual testing (screenshots provided in PR description ✓)
  • UI/screenshot tests (if available in the codebase)

Recommendation:
Consider verifying the change works correctly across:

• Different device configurations (light/dark mode, different API levels)
• Various screen densities
• Accessibility modes (high contrast, etc.)

The manual testing screenshots in the PR description demonstrate light and dark mode work correctly, which is good.

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Documentation ✓

• The code is self-explanatory
• No additional documentation needed for this UI fix
• The PR description clearly explains the change with before/after screenshots

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Best Practices ✓

Complies with repo guidelines:

• ✓ Line length under 120 characters
• ✓ No deprecated APIs used
• ✓ Follows Kotlin coding conventions
• ✓ Uses existing extension functions appropriately

Material Design compliance:

• Using colorOnBackground is the correct Material attribute for content color
• Alpha value of 150 (59% opacity) provides good visual hierarchy for secondary content

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Suggestions for Consideration

1. Alpha value as constant: Consider extracting the magic number 150 to a named constant for better maintainability:

   private const val BOOKMARK_ICON_ALPHA = 150

2. Null safety: While not critical, using let scope function would make the null handling more explicit and avoid the force unwrap.

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Verdict: APPROVED ✅

This is a well-targeted fix that appropriately addresses the dark mode visibility issue. The implementation uses the correct Material Design patterns and integrates cleanly with the existing codebase. The suggestions above are minor enhancements and don't block approval.

Great work on providing clear before/after screenshots in the PR description! 🎯

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[dangermattic]

	1 Warning
⚠️	PR is not assigned to a milestone.

Generated by 🚫 Danger

[nbradbury]

1. Consider extracting the magic number 150 to a named constant for better maintainability:

Done in 1af6db2.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[wpmobilebot]

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	App Name	Jetpack
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr22399-6e108a5
	Commit	6e108a5
	Direct Download	jetpack-prototype-build-pr22399-6e108a5.apk

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[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress by scanning the QR code below to install the corresponding build.

	App Name	WordPress
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr22399-6e108a5
	Commit	6e108a5
	Direct Download	wordpress-prototype-build-pr22399-6e108a5.apk

Note: Google Login is not supported on these builds.