[Webkit-unassigned] [Bug 201918] New: A dynamic change in a CSS property of an SVGElement does not get reflected in the instances of the SVGElement

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=201918

            Bug ID: 201918
           Summary: A dynamic change in a CSS property of an SVGElement
                    does not get reflected in the instances of the
                    SVGElement
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sabouhallawa at apple.com
                CC: zimmermann at kde.org

Created attachment 379043

  --> https://bugs.webkit.org/attachment.cgi?id=379043&action=review

change-fill-property-dynamic

Open the attached test case.

Result: Two rectangles one green and the other is red.
Expected: Two green rectangles.

The test case has a <rect> element with the CSS property fill="red". There is also a <use> element which references the <rect> element. When the document is loaded, the value of CSS property "fill" of the <rect> element is changed to "green".  The bug is, the. shadow tree of the <use> element which includes an instances of the <rect> element does not get updated.

We need to call SVGUseElement::invalidateShadowTree() after changing the CSS property the same way we do in SVGElement::svgAttributeChanged().

This works:
    rect.setAttribute('fill', 'green');

But this does not work:
    rect.style['fill'] = 'green';

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