| /* |
| * Copyright (C) 2018 Apple Inc. All Rights Reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| class LayoutState { |
| constructor(initialDisplayBox) { |
| this.m_formattingStates = new Map(); |
| this.m_initialDisplayBox = initialDisplayBox; |
| } |
| |
| layout(formattingRoot) { |
| let formattingState = this._createFormattingState(formattingRoot); |
| this.m_formattingStates.set(formattingRoot, formattingState); |
| formattingState.formattingContext().layout(); |
| } |
| |
| _createFormattingState(formattingRoot) { |
| ASSERT(formattingRoot.establishesFormattingContext()); |
| if (formattingRoot.establishesBlockFormattingContext()) |
| return new BlockFormattingState(formattingRoot, this); |
| if (formattingRoot.establishesInlineFormattingContext()) |
| return new InlineFormattingState(formattingRoot, this); |
| ASSERT_NOT_REACHED(); |
| return null; |
| } |
| |
| formattingStates() { |
| return this.m_formattingStates; |
| } |
| |
| formattingState(formattingRoot) { |
| return this.m_formattingStates.get(formattingRoot); |
| } |
| |
| initialDisplayBox() { |
| return this.m_initialDisplayBox; |
| } |
| } |