[Webkit-unassigned] [Bug 62535] New: Reduce the number of hand-built RenderObjects in the slider implementation

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=62535

           Summary: Reduce the number of hand-built RenderObjects in the
                    slider implementation
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: tkent at chromium.org
        Depends on: 52920
            Blocks: 62096


After the patch in Bug 52920, we have the following hand-built RenderObjects for <input type=range>

* RenderSliderThumb in SliderThumbElement.cpp
  horizontal/vertical switching and thumb positioning

* RenderSliderContainer in SliderThumbElement.cpp
  horizontal/vertical switching and height adjustment

* RenderSlider
  basePosition(), computePreferredLogicalWidths(), inDragMode(), etc.

We'd like to reduce them.

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