Native Hover & Click Feedback for PAW Action Button

User Story

As a PAW Modeller,
I want the native Action Button properties to be extended with
hover and click feedback as defined by the Carbon Design System,
so that I can give buttons visual feedback like any other
Carbon-conformant IBM application — without editing book JSON.

Requested IBM Enhancement

Extend native Action Button properties with Carbon-compliant hover/click feedback as a product feature.

Proposed property:

feedbackStyle: none | primary | tertiary

primary / secondary: full-surface overlay on PAW fill ( Opacity 10 % hover, 20 % active); native PAW fill, border, text and action remain visible and intact.

tertiary: transparent or PAW-fill background in normal state; on hover and active, swap background and text color, with PAW properties (fill color, text color) as the sole color source — active additionally darkened / brightened. Semantics follow Carbon tertiary button: outline / inverse-on-hover look, but driven entirely by the modeller's PAW color properties.

none: current default behaviour (backward compatible).

Acceptance Criteria

1. The Action Button properties dialog exposes controllable settings for hover and click feedback.
2. The modeller does not need to edit the book JSON manually to achieve the effect.
3. PAW properties — fill, border, radius, text, font, color, etc. — remain usable.
4. Native action (navigation / TI process / model action) remains unaffected.

Prototype

Carbon-compliant feedback is already technically achievable today — but only as a manual book-JSON patch, not as a product feature. Browser-verified under PAW 2.1.22 Build 1575, Carbon 10.50.

JSON snippet to inject into features.Models_internal.content (PAW editor wrappers omitted for clarity):

<div class="staticContent border-transparent fill-color8"
     style="border-radius:4px;height:100%;position:relative;
            overflow:hidden;color:inherit;">
  <p class="bx--btn--primary"
     style="width:calc(100% + 2px);
            height:calc(100% + 2px);
            margin:-1px 0 0 -1px;
            padding:0;border:0;max-width:none;box-sizing:border-box;
            display:flex;align-items:center;justify-content:center;
            --cds-interactive-01:rgba(0,0,0,0);
            --cds-hover-primary:rgba(0,0,0,0.10);
            --cds-active-primary:rgba(0,0,0,0.20);
            --cds-text-04:inherit;
            transition:background-color 140ms ease,color 140ms ease;
            color:inherit;">
    <span class="rt_fontFamilyIBMPlexSans-SemiBold color1">
      Button
    </span>
  </p>
</div>

Verified behaviour:

Normal: PAW fill visible, no overlay
Hover:  10 % black overlay over PAW fill
Active: 20 % black overlay over PAW fill

Note: the tertiary variant could not be delivered as a prototype, because reliably preserving all PAW button properties (fill, border, text color) alongside the dynamic color swap was not achievable with book-JSON means. It is therefore requested as a native product feature from IBM.

Business Value

• Consistency: PAW books align with the Carbon Design System used across IBM products.
• Effort: Modeller needs no JSON / REST knowledge.
• Upgrade safety: No unofficial HTML patches that break on PAW upgrades.
• Maintainability: Feedback strength controlled centrally via property.