| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef GeneratedChildren_h |
| #define GeneratedChildren_h |
| |
| #include "core/layout/LayoutObject.h" |
| |
| namespace blink { |
| |
| // We only create "generated" child layoutObjects like one for first-letter if: |
| // - the firstLetterBlock can have children in the DOM and |
| // - the block doesn't have any special assumption on its text children. |
| // This correctly prevents form controls from having such layoutObjects. |
| static bool canHaveGeneratedChildren(const LayoutObject& layoutObject) { |
| // FIXME: LayoutMedia::layout makes assumptions about what children are |
| // allowed so we can't support generated content. |
| if (layoutObject.isMedia() || layoutObject.isTextControl() || |
| layoutObject.isMenuList()) |
| return false; |
| |
| // Input elements can't have generated children, but button elements can. |
| // We'll write the code assuming any other button types that might emerge in |
| // the future can also have children. |
| if (layoutObject.isLayoutButton()) |
| return !isHTMLInputElement(*layoutObject.node()); |
| |
| return layoutObject.canHaveChildren(); |
| } |
| |
| } // namespace blink |
| |
| #endif // GeneratedChildren_h |
