| // Copyright 2014 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 LayoutPagedFlowThread_h |
| #define LayoutPagedFlowThread_h |
| |
| #include "core/layout/LayoutMultiColumnFlowThread.h" |
| |
| namespace blink { |
| |
| // A flow thread for paged overflow. FIXME: The current implementation relies on |
| // the multicol implementation, but it in the long run it would be better to |
| // have what's common between LayoutMultiColumnFlowThread and |
| // LayoutPagedFlowThread in LayoutFlowThread, and have both of them inherit |
| // from that one. |
| class LayoutPagedFlowThread : public LayoutMultiColumnFlowThread { |
| public: |
| static LayoutPagedFlowThread* CreateAnonymous( |
| Document&, |
| const ComputedStyle& parent_style); |
| |
| LayoutBlockFlow* PagedBlockFlow() const { |
| return ToLayoutBlockFlow(Parent()); |
| } |
| |
| // Return the number of pages. Will never be less than 1. |
| int PageCount(); |
| |
| bool IsLayoutPagedFlowThread() const override { return true; } |
| const char* GetName() const override { return "LayoutPagedFlowThread"; } |
| bool NeedsNewWidth() const override; |
| void UpdateLogicalWidth() override; |
| void UpdateLayout() override; |
| |
| private: |
| bool DescendantIsValidColumnSpanner( |
| LayoutObject* /*descendant*/) const override { |
| return false; |
| } |
| }; |
| |
| } // namespace blink |
| |
| #endif // LayoutPagedFlowThread_h |