[webkit-changes] [WebKit/WebKit] 99962e: Make CompositeEditCommand::prepareWhitespaceAtPosi...

[Ahmad Saleem]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 99962e54b060098839e394bb1153ed7bfcb63925
      https://github.com/WebKit/WebKit/commit/99962e54b060098839e394bb1153ed7bfcb63925
  Author: Ahmad Saleem <ahmad.saleem792+github at gmail.com>
  Date:   2022-12-10 (Sat, 10 Dec 2022)

  Changed paths:
    A LayoutTests/editing/deleting/delete-svg-001-expected.txt
    A LayoutTests/editing/deleting/delete-svg-001.html
    M Source/WebCore/editing/CompositeEditCommand.cpp
    M Source/WebCore/editing/CompositeEditCommand.h

  Log Message:
  -----------
  Make CompositeEditCommand::prepareWhitespaceAtPositionForSplit() works at deleting SVG element

Make CompositeEditCommand::prepareWhitespaceAtPositionForSplit() works at deleting SVG element
https://bugs.webkit.org/show_bug.cgi?id=62500

Reviewed by Ryosuke Niwa.

Merge - https://src.chromium.org/viewvc/blink?view=revision&revision=158002

CompositeEditCommand::prepareWhitespaceAtPositionForSplit() replaces collapsible whitespaces with non-breaking space around split position.
This patch changes it to work when split position is end of text node, e.g. VisualPosition.downstream().deprecatedNode() != VisualPostion.deprecateNode().

* Source/WebCore/editing/CompositeEditCommand.h: Add "replaceCollapsibleWhitespaceWithNonBreakingSpaceIfNeeded" header
* Source/WebCore/editing/CompositeEditCommand.cpp:
(CompositeEditCommand::prepareWhitespaceAtPositionForSplit):
(1) Add variable with "previousVisiblePos" and "visiblePos" return values
(2) Add "replaceCollapsibleWhitespaceWithNonBreakingSpaceIfNeeded" function and logic to work with "SVG" deletion
* LayoutTests/editing/deleting/delete-svg-001.html: Add Test Case
* LayoutTests/editing/deleting/delete-svg-001-expected.txt: Add Test Case Expectation

Canonical link: https://commits.webkit.org/257691@main