1 | /* |
2 | * Copyright (C) 2010 Google Inc. All Rights Reserved. |
3 | * Copyright (C) 2017 Apple Inc. All rights reserved. |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
8 | * 1. Redistributions of source code must retain the above copyright |
9 | * notice, this list of conditions and the following disclaimer. |
10 | * 2. Redistributions in binary form must reproduce the above copyright |
11 | * notice, this list of conditions and the following disclaimer in the |
12 | * documentation and/or other materials provided with the distribution. |
13 | * |
14 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
15 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
17 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
18 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
19 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
20 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
21 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
22 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
24 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
25 | * |
26 | */ |
27 | |
28 | #include "config.h" |
29 | #include "EventContext.h" |
30 | |
31 | #include "Document.h" |
32 | #include "FocusEvent.h" |
33 | #include "MouseEvent.h" |
34 | #include "TouchEvent.h" |
35 | |
36 | namespace WebCore { |
37 | |
38 | EventContext::EventContext(Node* node, EventTarget* currentTarget, EventTarget* target, int closedShadowDepth) |
39 | : m_node { node } |
40 | , m_currentTarget { currentTarget } |
41 | , m_target { target } |
42 | , m_closedShadowDepth { closedShadowDepth } |
43 | { |
44 | ASSERT(!isUnreachableNode(m_target.get())); |
45 | } |
46 | |
47 | EventContext::~EventContext() = default; |
48 | |
49 | void EventContext::handleLocalEvents(Event& event, EventInvokePhase phase) const |
50 | { |
51 | event.setTarget(m_target.get()); |
52 | event.setCurrentTarget(m_currentTarget.get()); |
53 | // FIXME: Consider merging handleLocalEvents and fireEventListeners. |
54 | if (m_node) |
55 | m_node->handleLocalEvents(event, phase); |
56 | else |
57 | m_currentTarget->fireEventListeners(event, phase); |
58 | } |
59 | |
60 | bool EventContext::isMouseOrFocusEventContext() const |
61 | { |
62 | return false; |
63 | } |
64 | |
65 | bool EventContext::isTouchEventContext() const |
66 | { |
67 | return false; |
68 | } |
69 | |
70 | MouseOrFocusEventContext::MouseOrFocusEventContext(Node& node, EventTarget* currentTarget, EventTarget* target, int closedShadowDepth) |
71 | : EventContext(&node, currentTarget, target, closedShadowDepth) |
72 | { |
73 | } |
74 | |
75 | MouseOrFocusEventContext::~MouseOrFocusEventContext() = default; |
76 | |
77 | void MouseOrFocusEventContext::handleLocalEvents(Event& event, EventInvokePhase phase) const |
78 | { |
79 | if (m_relatedTarget) |
80 | event.setRelatedTarget(*m_relatedTarget); |
81 | EventContext::handleLocalEvents(event, phase); |
82 | } |
83 | |
84 | bool MouseOrFocusEventContext::isMouseOrFocusEventContext() const |
85 | { |
86 | return true; |
87 | } |
88 | |
89 | #if ENABLE(TOUCH_EVENTS) |
90 | |
91 | TouchEventContext::TouchEventContext(Node& node, EventTarget* currentTarget, EventTarget* target, int closedShadowDepth) |
92 | : EventContext(&node, currentTarget, target, closedShadowDepth) |
93 | , m_touches(TouchList::create()) |
94 | , m_targetTouches(TouchList::create()) |
95 | , m_changedTouches(TouchList::create()) |
96 | { |
97 | } |
98 | |
99 | TouchEventContext::~TouchEventContext() = default; |
100 | |
101 | void TouchEventContext::handleLocalEvents(Event& event, EventInvokePhase phase) const |
102 | { |
103 | checkReachability(m_touches); |
104 | checkReachability(m_targetTouches); |
105 | checkReachability(m_changedTouches); |
106 | auto& touchEvent = downcast<TouchEvent>(event); |
107 | touchEvent.setTouches(m_touches.ptr()); |
108 | touchEvent.setTargetTouches(m_targetTouches.ptr()); |
109 | touchEvent.setChangedTouches(m_changedTouches.ptr()); |
110 | EventContext::handleLocalEvents(event, phase); |
111 | } |
112 | |
113 | bool TouchEventContext::isTouchEventContext() const |
114 | { |
115 | return true; |
116 | } |
117 | |
118 | #if !ASSERT_DISABLED |
119 | |
120 | void TouchEventContext::checkReachability(const Ref<TouchList>& touchList) const |
121 | { |
122 | size_t length = touchList->length(); |
123 | for (size_t i = 0; i < length; ++i) |
124 | ASSERT(!isUnreachableNode(downcast<Node>(touchList->item(i)->target()))); |
125 | } |
126 | |
127 | #endif |
128 | |
129 | #endif // ENABLE(TOUCH_EVENTS) |
130 | |
131 | } |
132 | |