1 /*
2 * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
3 * Copyright (C) 2010 Igalia S.L
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 COMPUTER, 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 COMPUTER, 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 #include "config.h"
28 #include "core/page/ContextMenuController.h"
29
30 #include "core/dom/Document.h"
31 #include "core/dom/Node.h"
32 #include "core/events/Event.h"
33 #include "core/events/MouseEvent.h"
34 #include "core/events/RelatedEvent.h"
35 #include "core/frame/LocalFrame.h"
36 #include "core/html/HTMLMenuElement.h"
37 #include "core/page/ContextMenuClient.h"
38 #include "core/page/ContextMenuProvider.h"
39 #include "core/page/CustomContextMenuProvider.h"
40 #include "core/page/EventHandler.h"
41 #include "platform/ContextMenu.h"
42 #include "platform/ContextMenuItem.h"
43
44 namespace blink {
45
46 using namespace HTMLNames;
47
ContextMenuController(Page *,ContextMenuClient * client)48 ContextMenuController::ContextMenuController(Page*, ContextMenuClient* client)
49 : m_client(client)
50 {
51 ASSERT_ARG(client, client);
52 }
53
~ContextMenuController()54 ContextMenuController::~ContextMenuController()
55 {
56 }
57
create(Page * page,ContextMenuClient * client)58 PassOwnPtrWillBeRawPtr<ContextMenuController> ContextMenuController::create(Page* page, ContextMenuClient* client)
59 {
60 return adoptPtrWillBeNoop(new ContextMenuController(page, client));
61 }
62
trace(Visitor * visitor)63 void ContextMenuController::trace(Visitor* visitor)
64 {
65 visitor->trace(m_hitTestResult);
66 }
67
clearContextMenu()68 void ContextMenuController::clearContextMenu()
69 {
70 m_contextMenu.clear();
71 if (m_menuProvider)
72 m_menuProvider->contextMenuCleared();
73 m_menuProvider = nullptr;
74 m_client->clearContextMenu();
75 m_hitTestResult = HitTestResult();
76 }
77
documentDetached(Document * document)78 void ContextMenuController::documentDetached(Document* document)
79 {
80 if (Node* innerNode = m_hitTestResult.innerNode()) {
81 // Invalidate the context menu info if its target document is detached.
82 if (innerNode->document() == document)
83 clearContextMenu();
84 }
85 }
86
populateCustomContextMenu(const Event & event)87 void ContextMenuController::populateCustomContextMenu(const Event& event)
88 {
89 if (!RuntimeEnabledFeatures::contextMenuEnabled())
90 return;
91
92 Node* node = event.target()->toNode();
93 if (!node || !node->isHTMLElement())
94 return;
95
96 HTMLElement& element = toHTMLElement(*node);
97 RefPtrWillBeRawPtr<HTMLMenuElement> menuElement = element.contextMenu();
98 if (!menuElement || !equalIgnoringCase(menuElement->fastGetAttribute(typeAttr), "popup"))
99 return;
100 RefPtrWillBeRawPtr<RelatedEvent> relatedEvent = RelatedEvent::create(EventTypeNames::show, true, true, node);
101 if (!menuElement->dispatchEvent(relatedEvent.release()))
102 return;
103 if (menuElement != element.contextMenu())
104 return;
105 m_menuProvider = CustomContextMenuProvider::create(*menuElement, element);
106 m_menuProvider->populateContextMenu(m_contextMenu.get());
107 }
108
handleContextMenuEvent(Event * event)109 void ContextMenuController::handleContextMenuEvent(Event* event)
110 {
111 m_contextMenu = createContextMenu(event);
112 if (!m_contextMenu)
113 return;
114 populateCustomContextMenu(*event);
115 showContextMenu(event);
116 }
117
showContextMenu(Event * event,PassRefPtr<ContextMenuProvider> menuProvider)118 void ContextMenuController::showContextMenu(Event* event, PassRefPtr<ContextMenuProvider> menuProvider)
119 {
120 m_menuProvider = menuProvider;
121
122 m_contextMenu = createContextMenu(event);
123 if (!m_contextMenu) {
124 clearContextMenu();
125 return;
126 }
127
128 m_menuProvider->populateContextMenu(m_contextMenu.get());
129 showContextMenu(event);
130 }
131
showContextMenuAtPoint(LocalFrame * frame,float x,float y,PassRefPtr<ContextMenuProvider> menuProvider)132 void ContextMenuController::showContextMenuAtPoint(LocalFrame* frame, float x, float y, PassRefPtr<ContextMenuProvider> menuProvider)
133 {
134 m_menuProvider = menuProvider;
135
136 LayoutPoint location(x, y);
137 m_contextMenu = createContextMenu(frame, location);
138 if (!m_contextMenu) {
139 clearContextMenu();
140 return;
141 }
142
143 m_menuProvider->populateContextMenu(m_contextMenu.get());
144 showContextMenu(nullptr);
145 }
146
createContextMenu(Event * event)147 PassOwnPtr<ContextMenu> ContextMenuController::createContextMenu(Event* event)
148 {
149 ASSERT(event);
150
151 if (!event->isMouseEvent())
152 return nullptr;
153
154 MouseEvent* mouseEvent = toMouseEvent(event);
155 return createContextMenu(event->target()->toNode()->document().frame(), mouseEvent->absoluteLocation());
156 }
157
createContextMenu(LocalFrame * frame,const LayoutPoint & location)158 PassOwnPtr<ContextMenu> ContextMenuController::createContextMenu(LocalFrame* frame, const LayoutPoint& location)
159 {
160 HitTestResult result(location);
161
162 if (frame)
163 result = frame->eventHandler().hitTestResultAtPoint(location, HitTestRequest::ReadOnly | HitTestRequest::Active);
164
165 if (!result.innerNonSharedNode())
166 return nullptr;
167
168 m_hitTestResult = result;
169
170 return adoptPtr(new ContextMenu);
171 }
172
showContextMenu(Event * event)173 void ContextMenuController::showContextMenu(Event* event)
174 {
175 m_client->showContextMenu(m_contextMenu.get());
176 if (event)
177 event->setDefaultHandled();
178 }
179
contextMenuItemSelected(const ContextMenuItem * item)180 void ContextMenuController::contextMenuItemSelected(const ContextMenuItem* item)
181 {
182 ASSERT(item->type() == ActionType || item->type() == CheckableActionType);
183
184 if (item->action() < ContextMenuItemBaseCustomTag || item->action() > ContextMenuItemLastCustomTag)
185 return;
186
187 ASSERT(m_menuProvider);
188 m_menuProvider->contextMenuItemSelected(item);
189 }
190
191 } // namespace blink
192