| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "third_party/blink/renderer/core/html/html_map_element.h" |
| |
| #include "third_party/blink/renderer/core/dom/document.h" |
| #include "third_party/blink/renderer/core/dom/element_traversal.h" |
| #include "third_party/blink/renderer/core/dom/node_lists_node_data.h" |
| #include "third_party/blink/renderer/core/frame/use_counter.h" |
| #include "third_party/blink/renderer/core/html/html_area_element.h" |
| #include "third_party/blink/renderer/core/html/html_collection.h" |
| #include "third_party/blink/renderer/core/html/html_image_element.h" |
| #include "third_party/blink/renderer/core/html_names.h" |
| #include "third_party/blink/renderer/core/layout/hit_test_result.h" |
| |
| namespace blink { |
| |
| using namespace html_names; |
| |
| inline HTMLMapElement::HTMLMapElement(Document& document) |
| : HTMLElement(kMapTag, document) { |
| UseCounter::Count(document, WebFeature::kMapElement); |
| } |
| |
| DEFINE_NODE_FACTORY(HTMLMapElement) |
| |
| HTMLMapElement::~HTMLMapElement() = default; |
| |
| HTMLAreaElement* HTMLMapElement::AreaForPoint( |
| const LayoutPoint& location, |
| const LayoutObject* container_object) { |
| HTMLAreaElement* default_area = nullptr; |
| for (HTMLAreaElement& area : |
| Traversal<HTMLAreaElement>::DescendantsOf(*this)) { |
| if (area.IsDefault() && !default_area) |
| default_area = &area; |
| else if (area.PointInArea(location, container_object)) |
| return &area; |
| } |
| |
| return default_area; |
| } |
| |
| HTMLImageElement* HTMLMapElement::ImageElement() { |
| HTMLCollection* images = GetDocument().images(); |
| for (unsigned i = 0; Element* curr = images->item(i); ++i) { |
| // The HTMLImageElement's useMap() value includes the '#' symbol at the |
| // beginning, which has to be stripped off. |
| HTMLImageElement& image_element = ToHTMLImageElement(*curr); |
| String use_map_name = |
| image_element.getAttribute(kUsemapAttr).GetString().Substring(1); |
| if (use_map_name == name_) |
| return &image_element; |
| } |
| |
| return nullptr; |
| } |
| |
| void HTMLMapElement::ParseAttribute(const AttributeModificationParams& params) { |
| // FIXME: This logic seems wrong for XML documents. |
| // Either the id or name will be used depending on the order the attributes |
| // are parsed. |
| |
| if (params.name == kIdAttr || params.name == kNameAttr) { |
| if (params.name == kIdAttr) { |
| // Call base class so that hasID bit gets set. |
| HTMLElement::ParseAttribute(params); |
| if (GetDocument().IsHTMLDocument()) |
| return; |
| } |
| if (isConnected()) |
| GetTreeScope().RemoveImageMap(*this); |
| String map_name = params.new_value; |
| if (map_name[0] == '#') |
| map_name = map_name.Substring(1); |
| name_ = AtomicString(map_name); |
| if (isConnected()) |
| GetTreeScope().AddImageMap(*this); |
| |
| return; |
| } |
| |
| HTMLElement::ParseAttribute(params); |
| } |
| |
| HTMLCollection* HTMLMapElement::areas() { |
| return EnsureCachedCollection<HTMLCollection>(kMapAreas); |
| } |
| |
| Node::InsertionNotificationRequest HTMLMapElement::InsertedInto( |
| ContainerNode& insertion_point) { |
| if (insertion_point.isConnected()) |
| GetTreeScope().AddImageMap(*this); |
| return HTMLElement::InsertedInto(insertion_point); |
| } |
| |
| void HTMLMapElement::RemovedFrom(ContainerNode& insertion_point) { |
| if (insertion_point.isConnected()) |
| GetTreeScope().RemoveImageMap(*this); |
| HTMLElement::RemovedFrom(insertion_point); |
| } |
| |
| } // namespace blink |