Allow selecting and copying text from file preview

[lukaw3d]

https://repo.sourcify.dev/contracts/full_match/42262/0xEF15601B599F5C0696E38AB27f100c4075B36150/sources/

Before	After

Summary by CodeRabbit

• New Features

  • Simplified navigation by focusing on click events for previous navigation.

• Bug Fixes

  • Improved event handling by removing unnecessary mouse and keyboard event listeners, enhancing user interaction.

[coderabbitai]

Walkthrough

The changes involve a modification in the preview.js file, specifically in the event handling logic within the init function. Several mouse and keyboard event listeners have been removed, leaving only a click event listener for navigation. This adjustment simplifies the interaction model by focusing solely on click events for the elements designated for previous navigation.

Changes

File	Change Summary
src/_h5ai/public/js/lib/ext/preview/preview.js	Removed multiple event listeners for mouse and keyboard events, retaining only the click event for navigation.

Poem

In a world of clicks and hops,
A rabbit dances, never stops.
With fewer sounds, the path is clear,
Just click to navigate, my dear!
Simplified joy, a leap we take,
In the meadow of code, new paths we make! 🐇✨

---

📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Files that changed from the base of the PR and between 15173ca and 3c18194.

📒 Files selected for processing (1)

• src/_h5ai/public/js/lib/ext/preview/preview.js (1 hunks)

🔇 Additional comments (3)

src/_h5ai/public/js/lib/ext/preview/preview.js (3)

Line range hint 1-324: Summary: Changes align with PR objective but require thorough testing

The changes made to this file, primarily the removal of event listeners, align with the PR objective of allowing text selection and copying in the file preview. However, these modifications might have broader implications on the preview functionality:

1. Text selection and copying should now be possible, meeting the primary objective.
2. Keyboard navigation and some user interactions might be affected.
3. Fullscreen behavior and related UI updates might need adjustment.

To ensure the changes meet the objective without introducing regressions:

1. Test text selection and copying in various file types within the preview.
2. Verify that navigation (both mouse and keyboard) still functions as expected.
3. Check fullscreen mode behavior and UI responsiveness.
4. Ensure that removing the 'mousemove' listener doesn't negatively impact user experience (e.g., hiding UI elements when inactive).

Consider adding these scenarios to your test plan or CI/CD pipeline to prevent future regressions.

---

270-270: Verify the impact of removed event listeners

The removal of 'keydown', 'mousemove', and 'mousedown' event listeners from the overlay element aligns with the PR objective of allowing text selection and copying. However, this change might have unintended consequences:

1. Keyboard navigation might be affected due to the removal of the 'keydown' event listener.
2. Any functionality that relied on 'mousemove' (e.g., showing/hiding UI elements on mouse movement) might no longer work.

Please verify that:

1. Keyboard navigation still works as expected.
2. Any UI elements that should appear/disappear based on mouse movement still function correctly.

You can use the following script to check for any remaining keyboard event handlers:

#!/bin/bash
# Search for keyboard event handlers in the codebase
rg --type js 'keydown|keypress|keyup'

If keyboard navigation is intended to be removed, please update the documentation to reflect this change in user interaction.

---

Line range hint 1-324: Review fullscreen behavior and keyboard handling

While the changes allow for text selection, they might have introduced inconsistencies:

1. The userAlive function (line 125) is still present but might not be called due to the removed 'mousemove' listener.
2. The onKeydown function (line 159) exists but might not be used as the 'keydown' listener was removed.

Consider the following improvements:

1. If the userAlive function is no longer needed, remove it to keep the code clean.
2. If keyboard navigation is still desired, reimplement the 'keydown' event listener in a way that doesn't interfere with text selection. For example:

dom(document).on('keydown', ev => {
    if (!dom('#pv-overlay').is(':visible')) return;
    onKeydown(ev);
});

This approach would allow keyboard navigation when the preview overlay is visible without affecting text selection.

Please review the fullscreen behavior to ensure it still works as expected after these changes. You can use the following script to check for fullscreen-related code:

---

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