#5225 After pasting from the clipboard, the IDT preview tooltip does not show the IDT alias on the canvas

[Copilot]

How the feature works? / How did you fix the issue?

When pasting IDT format from clipboard, the server converts it to KET. The returned KET templates lack library-specific properties like idtAliases, causing preview tooltips to show nothing while library-added monomers work correctly.

Solution: Enrich KET templates with library data during deserialization.

Added two functions in monomerToDrawingEntity.ts:

• getLibraryMonomerTemplate() - Looks up library template by ID/alias
• enrichTemplateWithLibraryData() - Merges library properties (idtAliases, aliasHELM, etc.) into KET template

Modified templateToMonomerProps() to call enrichment before extracting properties:

export function templateToMonomerProps(template: IKetMonomerTemplate) {
  // Enrich the template with library data before extracting props
  const enrichedTemplate = enrichTemplateWithLibraryData(template);
  
  return {
    // ... properties now include idtAliases from library
    idtAliases: enrichedTemplate.idtAliases,
    // ...
  };
}

Now pasted monomers inherit idtAliases from library templates, making tooltips consistent across both paste and library workflows.

Check list

• unit-tests written
• e2e-tests written
• documentation updated
• PR name follows the pattern #1234 – issue name
• branch name doesn't contain '#'
• PR is linked with the issue
• base branch (master or release/xx) is correct
• task status changed to "Code review"
• reviewers are notified about the pull request

Original prompt

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This section details on the original issue you should resolve

<issue_title>After pasting from the clipboard, the IDT preview tooltip does not show the IDT alias on the canvas</issue_title>
<issue_description>Case 1:
Steps to Reproduce

1. Go to Macromolecules mode.
2. Click on the “A” (layout switch) button in the top panel.

3. Then click the “Flex layout” button(the branching icon).

4. Clear Canvas.
5. Click on Open Structure.

6. Choose Paste From Clipboard.
7. Click on "Ket"

8. Choose IDT from the dropdown menu and input: /55HydMe-dC/.

9. Hover mouse over nucleotide to get preview tooltip on main screen.

Case 2:
Steps to Reproduce

1. Go to Macromolecules mode.
2. Click on the “A” (layout switch) button in the top panel.

3. Then click the “Flex layout” button(the branching icon).

4. Clear Canvas.
5. Click on Open Structure.

6. Choose Paste From Clipboard.
7. Click on "Ket"
8. Choose IDT from the dropdown menu and input: /3ThioMC3-D/
9. Hover mouse over CHEM SS3 to get preview tooltip on main screen

Actual behavior
After pasting from the clipboard, the IDT preview tooltip does not show the IDT alias on the canvas. But when we select same monomer from library and add it to canvas IDT alias is shown.

Expected behavior
After pasting from the clipboard, the IDT preview tooltip show the IDT alias on the canvas

Desktop:

• OS: Windows 11
• Browser Chrome
• Version 124.0.6367.79 (Official Build) (64-bit) and (127.0.6533.122) x 64

Ketcher version
[Version 2.24.0-rc.1]
Indigo version
[Version 1.23.0-rc.1]

Additional context
Bug found when testing:
#4880
#5078
#4926</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes After pasting from the clipboard, the IDT preview tooltip does not show the IDT alias on the canvas Indigo#3448

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[AlexeyGirin]

Problem on indigo side