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Diffstat (limited to 'khtml/xml/dom_restyler.h')
-rw-r--r-- | khtml/xml/dom_restyler.h | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/khtml/xml/dom_restyler.h b/khtml/xml/dom_restyler.h deleted file mode 100644 index eb8d795d5..000000000 --- a/khtml/xml/dom_restyler.h +++ /dev/null @@ -1,102 +0,0 @@ -/* - * This file is part of the DOM implementation for KDE. - * - * Copyright (C) 2006 Allan Sandfeld Jensen (kde@carewolf.com) - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public License - * along with this library; see the file COPYING.LIB. If not, write to - * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - * Boston, MA 02110-1301, USA. - * - */ - -#ifndef _DOM_restyler_h_ -#define _DOM_restyler_h_ - -#include "misc/multimap.h" -#include <bitset> - -namespace DOM { - class ElementImpl; -} - -// Restyle dependency tracker for dynamic DOM - -namespace khtml { - -using DOM::ElementImpl; - -// These types are different types of dependencies, and serves to identify which element should be -// restyled when a change of that kind triggers on the element -enum StructuralDependencyType { - // Style relies on the children of the element (unaffected by append & close) - StructuralDependency = 0, - // Style relies on the last children of the element (affected by append & close) - BackwardsStructuralDependency = 1, - // Style relies on the element having hover - HoverDependency = 2, - // Style relies on the element being active - ActiveDependency = 3, - // Style relies on another state of element (focus, disabled, checked, etc.) - // (focus is special cased though since elements always depend on their own focus) - OtherStateDependency = 4, - LastStructuralDependency -}; - -// Attribute dependencies are much coarser than structural, for memory reasons rather than performance -// This tracks global depencies of various kinds. -// The groups are separated into where possible depending elements might be: -enum AttributeDependencyType { - // Style of the changed element depend on this attribute - PersonalDependency = 0, - // Style of the elements children depend on this attribute - AncestorDependency = 1, - // Style of the elements later siblings or their children depend on this attribute - PredecessorDependency = 2, - LastAttributeDependency -}; - - -/** - * @internal - */ -class DynamicDomRestyler { -public: - DynamicDomRestyler(); - - // Structural dependencies are tracked from element to subject - void addDependency(ElementImpl* subject, ElementImpl* dependency, StructuralDependencyType type); - void resetDependencies(ElementImpl* subject); - void removeDependency(ElementImpl* subject, ElementImpl* dependency, StructuralDependencyType type); - void removeDependencies(ElementImpl* subject, StructuralDependencyType type); - void restyleDepedent(ElementImpl* dependency, StructuralDependencyType type); - - // Attribute dependencies are traced on attribute alone - void addDependency(uint attrID, AttributeDependencyType type); - bool checkDependency(uint attrID, AttributeDependencyType type); - - void dumpStats() const; -private: - // Map of dependencies. - KMultiMap<ElementImpl> dependency_map[LastStructuralDependency]; - // Map of reverse dependencies. For fast reset - KMultiMap<ElementImpl> reverse_map; - - // Map of the various attribute dependencies - std::bitset<512> attribute_map[LastAttributeDependency]; -}; - -} - -#endif - |