| /* |
| * Copyright (C) 2010 Google 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 COMPUTER, 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 COMPUTER, 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. |
| * |
| */ |
| |
| #ifndef EventContext_h |
| #define EventContext_h |
| |
| #include "core/events/EventTarget.h" |
| #include "core/dom/Node.h" |
| #include "core/dom/StaticNodeList.h" |
| #include "core/dom/TreeScope.h" |
| #include "wtf/RefPtr.h" |
| |
| namespace WebCore { |
| |
| class Event; |
| class TouchList; |
| |
| class EventContext { |
| public: |
| // FIXME: Use ContainerNode instead of Node. |
| EventContext(PassRefPtr<Node>, PassRefPtr<EventTarget> currentTarget, PassRefPtr<EventTarget> target); |
| virtual ~EventContext(); |
| |
| Node* node() const { return m_node.get(); } |
| EventTarget* target() const { return m_target.get(); } |
| void setTarget(PassRefPtr<EventTarget> target) { m_target = target; } |
| PassRefPtr<NodeList> eventPath() const { return m_eventPath; } |
| void adoptEventPath(Vector<RefPtr<Node> >&); |
| void setEventPath(PassRefPtr<NodeList> nodeList) { m_eventPath = nodeList; } |
| |
| bool currentTargetSameAsTarget() const { return m_currentTarget.get() == m_target.get(); } |
| virtual void handleLocalEvents(Event*) const; |
| virtual bool isMouseOrFocusEventContext() const; |
| virtual bool isTouchEventContext() const; |
| |
| protected: |
| #ifndef NDEBUG |
| bool isUnreachableNode(EventTarget*); |
| #endif |
| RefPtr<Node> m_node; |
| RefPtr<EventTarget> m_currentTarget; |
| RefPtr<EventTarget> m_target; |
| RefPtr<NodeList> m_eventPath; |
| }; |
| |
| class MouseOrFocusEventContext : public EventContext { |
| public: |
| MouseOrFocusEventContext(PassRefPtr<Node>, PassRefPtr<EventTarget> currentTarget, PassRefPtr<EventTarget> target); |
| virtual ~MouseOrFocusEventContext(); |
| EventTarget* relatedTarget() const { return m_relatedTarget.get(); } |
| void setRelatedTarget(PassRefPtr<EventTarget>); |
| virtual void handleLocalEvents(Event*) const OVERRIDE; |
| virtual bool isMouseOrFocusEventContext() const OVERRIDE; |
| |
| private: |
| RefPtr<EventTarget> m_relatedTarget; |
| }; |
| |
| |
| class TouchEventContext : public EventContext { |
| public: |
| TouchEventContext(PassRefPtr<Node>, PassRefPtr<EventTarget> currentTarget, PassRefPtr<EventTarget> target); |
| virtual ~TouchEventContext(); |
| |
| virtual void handleLocalEvents(Event*) const OVERRIDE; |
| virtual bool isTouchEventContext() const OVERRIDE; |
| |
| TouchList* touches() { return m_touches.get(); } |
| TouchList* targetTouches() { return m_targetTouches.get(); } |
| TouchList* changedTouches() { return m_changedTouches.get(); } |
| |
| private: |
| RefPtr<TouchList> m_touches; |
| RefPtr<TouchList> m_targetTouches; |
| RefPtr<TouchList> m_changedTouches; |
| #ifndef NDEBUG |
| void checkReachability(TouchList*) const; |
| #endif |
| }; |
| |
| inline TouchEventContext& toTouchEventContext(EventContext& eventContext) |
| { |
| ASSERT_WITH_SECURITY_IMPLICATION(eventContext.isTouchEventContext()); |
| return static_cast<TouchEventContext&>(eventContext); |
| } |
| |
| #ifndef NDEBUG |
| inline bool EventContext::isUnreachableNode(EventTarget* target) |
| { |
| // FIXME: Checks also for SVG elements. |
| return target && target->toNode() && !target->toNode()->isSVGElement() && !target->toNode()->treeScope().isInclusiveAncestorOf(m_node->treeScope()); |
| } |
| #endif |
| |
| inline void MouseOrFocusEventContext::setRelatedTarget(PassRefPtr<EventTarget> relatedTarget) |
| { |
| ASSERT(!isUnreachableNode(relatedTarget.get())); |
| m_relatedTarget = relatedTarget; |
| } |
| |
| } |
| |
| #endif // EventContext_h |