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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef GeneratedChildren_h | 5 #ifndef GeneratedChildren_h |
6 #define GeneratedChildren_h | 6 #define GeneratedChildren_h |
7 | 7 |
8 #include "core/layout/LayoutObject.h" | 8 #include "core/layout/LayoutObject.h" |
9 | 9 |
10 namespace blink { | 10 namespace blink { |
11 | 11 |
12 // We only create "generated" child layoutObjects like one for first-letter if: | 12 // We only create "generated" child layoutObjects like one for first-letter if: |
13 // - the firstLetterBlock can have children in the DOM and | 13 // - the firstLetterBlock can have children in the DOM and |
14 // - the block doesn't have any special assumption on its text children. | 14 // - the block doesn't have any special assumption on its text children. |
15 // This correctly prevents form controls from having such layoutObjects. | 15 // This correctly prevents form controls from having such layoutObjects. |
16 static bool canHaveGeneratedChildren(const LayoutObject& layoutObject) { | 16 static bool canHaveGeneratedChildren(const LayoutObject& layoutObject) { |
17 // FIXME: LayoutMedia::layout makes assumptions about what children are allowe
d | 17 // FIXME: LayoutMedia::layout makes assumptions about what children are |
18 // so we can't support generated content. | 18 // allowed so we can't support generated content. |
19 if (layoutObject.isMedia() || layoutObject.isTextControl() || | 19 if (layoutObject.isMedia() || layoutObject.isTextControl() || |
20 layoutObject.isMenuList()) | 20 layoutObject.isMenuList()) |
21 return false; | 21 return false; |
22 | 22 |
23 // Input elements can't have generated children, but button elements can. We'l
l | 23 // Input elements can't have generated children, but button elements can. |
24 // write the code assuming any other button types that might emerge in the fut
ure | 24 // We'll write the code assuming any other button types that might emerge in |
25 // can also have children. | 25 // the future can also have children. |
26 if (layoutObject.isLayoutButton()) | 26 if (layoutObject.isLayoutButton()) |
27 return !isHTMLInputElement(*layoutObject.node()); | 27 return !isHTMLInputElement(*layoutObject.node()); |
28 | 28 |
29 return layoutObject.canHaveChildren(); | 29 return layoutObject.canHaveChildren(); |
30 } | 30 } |
31 | 31 |
32 } // namespace blink | 32 } // namespace blink |
33 | 33 |
34 #endif // GeneratedChildren_h | 34 #endif // GeneratedChildren_h |
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