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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/HTMLMenuElement.h"
#include "mozilla/BasicEvents.h"
#include "mozilla/EventDispatcher.h"
#include "mozilla/dom/DocumentInlines.h"
#include "mozilla/dom/HTMLMenuElementBinding.h"
#include "mozilla/dom/HTMLMenuItemElement.h"
#include "nsIMenuBuilder.h"
#include "nsAttrValueInlines.h"
#include "nsContentUtils.h"
#include "nsIURI.h"
#define HTMLMENUBUILDER_CONTRACTID "@mozilla.org/content/html-menu-builder;1"
NS_IMPL_NS_NEW_HTML_ELEMENT(Menu)
namespace mozilla {
namespace dom {
enum MenuType : uint8_t { MENU_TYPE_CONTEXT = 1, MENU_TYPE_TOOLBAR };
static const nsAttrValue::EnumTable kMenuTypeTable[] = {
{"context", MENU_TYPE_CONTEXT},
{"toolbar", MENU_TYPE_TOOLBAR},
{nullptr, 0}};
static const nsAttrValue::EnumTable* kMenuDefaultType = &kMenuTypeTable[1];
enum SeparatorType { ST_TRUE_INIT = -1, ST_FALSE = 0, ST_TRUE = 1 };
HTMLMenuElement::HTMLMenuElement(
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
: nsGenericHTMLElement(std::move(aNodeInfo)), mType(MENU_TYPE_TOOLBAR) {}
HTMLMenuElement::~HTMLMenuElement() = default;
NS_IMPL_ELEMENT_CLONE(HTMLMenuElement)
void HTMLMenuElement::SendShowEvent() {
nsCOMPtr<Document> document = GetComposedDoc();
if (!document) {
return;
}
WidgetEvent event(true, eShow);
event.mFlags.mBubbles = false;
event.mFlags.mCancelable = false;
RefPtr<nsPresContext> presContext = document->GetPresContext();
if (!presContext) {
return;
}
nsEventStatus status = nsEventStatus_eIgnore;
EventDispatcher::Dispatch(static_cast<nsIContent*>(this), presContext, &event,
nullptr, &status);
}
already_AddRefed<nsIMenuBuilder> HTMLMenuElement::CreateBuilder() {
if (mType != MENU_TYPE_CONTEXT) {
return nullptr;
}
nsCOMPtr<nsIMenuBuilder> builder =
do_CreateInstance(HTMLMENUBUILDER_CONTRACTID);
NS_WARNING_ASSERTION(builder, "No builder available");
return builder.forget();
}
void HTMLMenuElement::Build(nsIMenuBuilder* aBuilder) {
if (!aBuilder) {
return;
}
BuildSubmenu(u""_ns, this, aBuilder);
}
nsresult HTMLMenuElement::AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
const nsAttrValue* aValue,
const nsAttrValue* aOldValue,
nsIPrincipal* aSubjectPrincipal,
bool aNotify) {
if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::type) {
if (aValue) {
mType = aValue->GetEnumValue();
} else {
mType = kMenuDefaultType->value;
}
}
return nsGenericHTMLElement::AfterSetAttr(
aNameSpaceID, aName, aValue, aOldValue, aSubjectPrincipal, aNotify);
}
bool HTMLMenuElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
const nsAString& aValue,
nsIPrincipal* aMaybeScriptedPrincipal,
nsAttrValue& aResult) {
if (aNamespaceID == kNameSpaceID_None && aAttribute == nsGkAtoms::type) {
return aResult.ParseEnumValue(aValue, kMenuTypeTable, false,
kMenuDefaultType);
}
return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
aMaybeScriptedPrincipal, aResult);
}
void HTMLMenuElement::BuildSubmenu(const nsAString& aLabel,
nsIContent* aContent,
nsIMenuBuilder* aBuilder) {
aBuilder->OpenContainer(aLabel);
int8_t separator = ST_TRUE_INIT;
TraverseContent(aContent, aBuilder, separator);
if (separator == ST_TRUE) {
aBuilder->UndoAddSeparator();
}
aBuilder->CloseContainer();
}
// static
bool HTMLMenuElement::CanLoadIcon(nsIContent* aContent,
const nsAString& aIcon) {
if (aIcon.IsEmpty()) {
return false;
}
Document* doc = aContent->OwnerDoc();
nsCOMPtr<nsIURI> uri;
nsContentUtils::NewURIWithDocumentCharset(getter_AddRefs(uri), aIcon, doc,
aContent->GetBaseURI());
if (!uri) {
return false;
}
return nsContentUtils::CanLoadImage(uri, aContent, doc,
aContent->NodePrincipal());
}
void HTMLMenuElement::TraverseContent(nsIContent* aContent,
nsIMenuBuilder* aBuilder,
int8_t& aSeparator) {
nsCOMPtr<nsIContent> child;
for (child = aContent->GetFirstChild(); child;
child = child->GetNextSibling()) {
nsGenericHTMLElement* element = nsGenericHTMLElement::FromNode(child);
if (!element) {
continue;
}
if (child->IsHTMLElement(nsGkAtoms::menuitem)) {
HTMLMenuItemElement* menuitem = HTMLMenuItemElement::FromNode(child);
if (menuitem->IsHidden()) {
continue;
}
nsAutoString label;
menuitem->GetLabel(label);
if (label.IsEmpty()) {
continue;
}
nsAutoString icon;
menuitem->GetIcon(icon);
aBuilder->AddItemFor(menuitem, CanLoadIcon(child, icon));
aSeparator = ST_FALSE;
} else if (child->IsHTMLElement(nsGkAtoms::hr)) {
aBuilder->AddSeparator();
} else if (child->IsHTMLElement(nsGkAtoms::menu) && !element->IsHidden()) {
if (child->AsElement()->HasAttr(kNameSpaceID_None, nsGkAtoms::label)) {
nsAutoString label;
child->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::label, label);
BuildSubmenu(label, child, aBuilder);
aSeparator = ST_FALSE;
} else {
AddSeparator(aBuilder, aSeparator);
TraverseContent(child, aBuilder, aSeparator);
AddSeparator(aBuilder, aSeparator);
}
}
}
}
inline void HTMLMenuElement::AddSeparator(nsIMenuBuilder* aBuilder,
int8_t& aSeparator) {
if (aSeparator) {
return;
}
aBuilder->AddSeparator();
aSeparator = ST_TRUE;
}
JSObject* HTMLMenuElement::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return HTMLMenuElement_Binding::Wrap(aCx, this, aGivenProto);
}
} // namespace dom
} // namespace mozilla