[Webkit-unassigned] [Bug 191176] New: Web Inspector: View: introduce an afterLayout

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Nov 1 16:44:29 PDT 2018


            Bug ID: 191176
           Summary: Web Inspector: View: introduce an afterLayout
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: drousso at apple.com
                CC: inspector-bugzilla-changes at group.apple.com

The `WI.View` layout system works from a top-down approach, meaning that parents call `layout()` before their children, which can sometimes prevent the parent from querying for values on the child (e.g. `WI.Table` rows or `WI.DataGrid` nodes) as they don't get created until the child calls `layout()`.  Inside `WI.View.prototype._layoutSubtree`, we recursively iterate over the entire subtree rooted at the parent and call `layout()` for each view encountered.  Since this entire operation is synchronous, we can add an `afterLayout` function that gets called at the end of `WI.View.prototype._layoutSubtree`, meaning that it will get called after all children have `layout()`.

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