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/events/Event.h"
32#include "core/events/MouseEvent.h"
33#include "core/dom/Node.h"
34#include "core/frame/LocalFrame.h"
35#include "core/page/ContextMenuClient.h"
36#include "core/page/ContextMenuProvider.h"
37#include "core/page/EventHandler.h"
38#include "platform/ContextMenu.h"
39#include "platform/ContextMenuItem.h"
40
41namespace WebCore {
42
43ContextMenuController::ContextMenuController(Page*, ContextMenuClient* client)
44    : m_client(client)
45{
46    ASSERT_ARG(client, client);
47}
48
49ContextMenuController::~ContextMenuController()
50{
51}
52
53PassOwnPtr<ContextMenuController> ContextMenuController::create(Page* page, ContextMenuClient* client)
54{
55    return adoptPtr(new ContextMenuController(page, client));
56}
57
58void ContextMenuController::clearContextMenu()
59{
60    m_contextMenu.clear();
61    if (m_menuProvider)
62        m_menuProvider->contextMenuCleared();
63    m_menuProvider = nullptr;
64    m_client->clearContextMenu();
65    m_hitTestResult = HitTestResult();
66}
67
68void ContextMenuController::documentDetached(Document* document)
69{
70    if (Node* innerNode = m_hitTestResult.innerNode()) {
71        // Invalidate the context menu info if its target document is detached.
72        if (innerNode->document() == document)
73            clearContextMenu();
74    }
75}
76
77void ContextMenuController::handleContextMenuEvent(Event* event)
78{
79    m_contextMenu = createContextMenu(event);
80    if (!m_contextMenu)
81        return;
82
83    showContextMenu(event);
84}
85
86void ContextMenuController::showContextMenu(Event* event, PassRefPtr<ContextMenuProvider> menuProvider)
87{
88    m_menuProvider = menuProvider;
89
90    m_contextMenu = createContextMenu(event);
91    if (!m_contextMenu) {
92        clearContextMenu();
93        return;
94    }
95
96    m_menuProvider->populateContextMenu(m_contextMenu.get());
97    showContextMenu(event);
98}
99
100PassOwnPtr<ContextMenu> ContextMenuController::createContextMenu(Event* event)
101{
102    ASSERT(event);
103
104    if (!event->isMouseEvent())
105        return nullptr;
106
107    MouseEvent* mouseEvent = toMouseEvent(event);
108    HitTestResult result(mouseEvent->absoluteLocation());
109
110    if (LocalFrame* frame = event->target()->toNode()->document().frame())
111        result = frame->eventHandler().hitTestResultAtPoint(mouseEvent->absoluteLocation(), HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::ConfusingAndOftenMisusedDisallowShadowContent);
112
113    if (!result.innerNonSharedNode())
114        return nullptr;
115
116    m_hitTestResult = result;
117
118    return adoptPtr(new ContextMenu);
119}
120
121void ContextMenuController::showContextMenu(Event* event)
122{
123    m_client->showContextMenu(m_contextMenu.get());
124    event->setDefaultHandled();
125}
126
127void ContextMenuController::contextMenuItemSelected(const ContextMenuItem* item)
128{
129    ASSERT(item->type() == ActionType || item->type() == CheckableActionType);
130
131    if (item->action() < ContextMenuItemBaseCustomTag || item->action() > ContextMenuItemLastCustomTag)
132        return;
133
134    ASSERT(m_menuProvider);
135    m_menuProvider->contextMenuItemSelected(item);
136}
137
138} // namespace WebCore
139