1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
6 #include "core/page/CustomContextMenuProvider.h"
8 #include "core/dom/Document.h"
9 #include "core/dom/ElementTraversal.h"
10 #include "core/events/EventDispatcher.h"
11 #include "core/events/MouseEvent.h"
12 #include "core/html/HTMLMenuElement.h"
13 #include "core/html/HTMLMenuItemElement.h"
14 #include "core/page/ContextMenuController.h"
15 #include "core/page/Page.h"
16 #include "platform/ContextMenu.h"
20 using namespace HTMLNames;
22 CustomContextMenuProvider::CustomContextMenuProvider(HTMLMenuElement& menu, HTMLElement& subject)
24 , m_subjectElement(subject)
28 CustomContextMenuProvider::~CustomContextMenuProvider()
32 void CustomContextMenuProvider::trace(Visitor* visitor)
34 visitor->trace(m_menu);
35 visitor->trace(m_subjectElement);
36 visitor->trace(m_menuItems);
37 ContextMenuProvider::trace(visitor);
40 void CustomContextMenuProvider::populateContextMenu(ContextMenu* menu)
42 populateContextMenuItems(*m_menu, *menu);
45 void CustomContextMenuProvider::contextMenuItemSelected(const ContextMenuItem* item)
47 if (HTMLElement* element = menuItemAt(item->action())) {
48 RefPtrWillBeRawPtr<SimulatedMouseEvent> click = SimulatedMouseEvent::create(EventTypeNames::click, m_menu->document().domWindow(), Event::create());
49 click->setRelatedTarget(m_subjectElement.get());
50 element->dispatchEvent(click.release());
54 void CustomContextMenuProvider::contextMenuCleared()
57 m_subjectElement = nullptr;
60 void CustomContextMenuProvider::appendSeparator(ContextMenu& contextMenu)
62 // Avoid separators at the start of any menu and submenu.
63 if (!contextMenu.items().size())
66 // Collapse all sequences of two or more adjacent separators in the menu or
67 // any submenus to a single separator.
68 ContextMenuItem lastItem = contextMenu.items().last();
69 if (lastItem.type() == SeparatorType)
72 contextMenu.appendItem(ContextMenuItem(SeparatorType, ContextMenuItemCustomTagNoAction, String()));
75 void CustomContextMenuProvider::appendMenuItem(HTMLMenuItemElement* menuItem, ContextMenu& contextMenu)
77 // Avoid menuitems with no label.
78 String labelString = menuItem->fastGetAttribute(labelAttr);
79 if (labelString.isEmpty())
82 m_menuItems.append(menuItem);
83 contextMenu.appendItem(ContextMenuItem(ActionType, static_cast<ContextMenuAction>(ContextMenuItemBaseCustomTag + m_menuItems.size() - 1), labelString));
86 void CustomContextMenuProvider::populateContextMenuItems(const HTMLMenuElement& menu, ContextMenu& contextMenu)
88 HTMLElement* nextElement = Traversal<HTMLElement>::firstWithin(menu);
90 if (isHTMLHRElement(*nextElement)) {
91 appendSeparator(contextMenu);
92 nextElement = Traversal<HTMLElement>::next(*nextElement, &menu);
93 } else if (isHTMLMenuElement(*nextElement)) {
95 String labelString = nextElement->fastGetAttribute(labelAttr);
96 if (labelString.isNull()) {
97 appendSeparator(contextMenu);
98 populateContextMenuItems(*toHTMLMenuElement(nextElement), contextMenu);
99 appendSeparator(contextMenu);
100 } else if (!labelString.isEmpty()) {
101 populateContextMenuItems(*toHTMLMenuElement(nextElement), subMenu);
102 contextMenu.appendItem(ContextMenuItem(SubmenuType, ContextMenuItemCustomTagNoAction, labelString, &subMenu));
104 nextElement = Traversal<HTMLElement>::nextSibling(*nextElement);
105 } else if (isHTMLMenuItemElement(*nextElement)) {
106 appendMenuItem(toHTMLMenuItemElement(nextElement), contextMenu);
107 if (ContextMenuItemBaseCustomTag + m_menuItems.size() >= ContextMenuItemLastCustomTag)
109 nextElement = Traversal<HTMLElement>::next(*nextElement, &menu);
111 nextElement = Traversal<HTMLElement>::next(*nextElement, &menu);
115 // Remove separators at the end of the menu and any submenus.
116 while (contextMenu.items().size() && contextMenu.items().last().type() == SeparatorType)
117 contextMenu.removeLastItem();
120 HTMLElement* CustomContextMenuProvider::menuItemAt(unsigned menuId)
122 int itemIndex = menuId - ContextMenuItemBaseCustomTag;
123 if (itemIndex < 0 || static_cast<unsigned long>(itemIndex) >= m_menuItems.size())
125 return m_menuItems[itemIndex].get();