130 lines
3.9 KiB
JavaScript
130 lines
3.9 KiB
JavaScript
/*
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* Copyright (C) 2018 Apple Inc. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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namespace Layout {
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class Container : public Box {
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public:
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setFirstChild(Layout::Box&);
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setLastChild(Layout::Box&);
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Layout::Box* firstChild();
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Layout::Box* firstInFlowChild();
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Layout::Box* firstInFlowOrFloatChild();
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Layout::Box* lastChild();
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Layout::Box* lastInFlowChild();
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bool hasChild();
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bool hasInFlowChild();
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bool hasInFlowOrFloatChild();
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Vector<Layout::Box&> outOfFlowDescendants();
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};
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}
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*/
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Layout.Container = class Container extends Layout.Box {
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constructor(node, id) {
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super(node, id);
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this.m_firstChild = null;
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this.m_lastChild = null;
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}
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setFirstChild(firstChild) {
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this.m_firstChild = firstChild;
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}
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setLastChild(lastChild) {
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this.m_lastChild = lastChild;
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}
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firstChild() {
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return this.m_firstChild;
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}
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firstInFlowChild() {
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if (!this.hasChild())
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return null;
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let firstChild = this.firstChild();
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if (firstChild.isInFlow())
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return firstChild;
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return firstChild.nextInFlowSibling();
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}
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firstInFlowOrFloatChild() {
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if (!this.hasChild())
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return null;
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let firstChild = this.firstChild();
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if (firstChild.isInFlow() || firstChild.isFloatingPositioned())
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return firstChild;
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return firstChild.nextInFlowOrFloatSibling();
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}
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lastChild() {
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return this.m_lastChild;
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}
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lastInFlowChild() {
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if (!this.hasChild())
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return null;
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let lastChild = this.lastChild();
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if (lastChild.isInFlow())
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return lastChild;
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return lastChild.previousInFlowSibling();
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}
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hasChild() {
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return !!this.firstChild();
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}
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hasInFlowChild() {
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return !!this.firstInFlowChild();
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}
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hasInFlowOrFloatChild() {
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return !!this.firstInFlowOrFloatChild();
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}
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outOfFlowDescendants() {
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if (!this.isPositioned())
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return new Array();
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let outOfFlowBoxes = new Array();
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let descendants = new Array();
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for (let child = this.firstChild(); child; child = child.nextSibling())
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descendants.push(child);
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while (descendants.length) {
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let descendant = descendants.pop();
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if (descendant.isOutOfFlowPositioned() && descendant.containingBlock() == this)
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outOfFlowBoxes.push(descendant);
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if (!descendant.isContainer())
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continue;
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for (let child = descendant.lastChild(); child; child = child.previousSibling())
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descendants.push(child);
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}
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return outOfFlowBoxes;
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}
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}
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