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846d8789ee
Various places in dom/ use the pattern: already_AddRefed<NodeInfo> ni = ...; which is supposed to be disallowed by our static analysis code, but isn't, for whatever reason. To fix our static analysis code, we need to eliminate instances of the above pattern. Unfortunately, eliminating this pattern requires restructuring how Nodes are created. Most Node subclasses take `already_AddRefed<NodeInfo>&` in their constructors, and a few accept `already_AddRefed<NodeInfo>&&`. We need to enforce the latter pattern consistently, which requires changing dozens of source files.
252 lines
6.4 KiB
C++
252 lines
6.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/HTMLMenuElement.h"
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#include "mozilla/BasicEvents.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/dom/HTMLMenuElementBinding.h"
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#include "mozilla/dom/HTMLMenuItemElement.h"
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#include "nsIMenuBuilder.h"
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#include "nsAttrValueInlines.h"
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#include "nsContentUtils.h"
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#include "nsIURI.h"
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#define HTMLMENUBUILDER_CONTRACTID "@mozilla.org/content/html-menu-builder;1"
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NS_IMPL_NS_NEW_HTML_ELEMENT(Menu)
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namespace mozilla {
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namespace dom {
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enum MenuType : uint8_t
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{
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MENU_TYPE_CONTEXT = 1,
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MENU_TYPE_TOOLBAR
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};
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static const nsAttrValue::EnumTable kMenuTypeTable[] = {
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{ "context", MENU_TYPE_CONTEXT },
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{ "toolbar", MENU_TYPE_TOOLBAR },
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{ nullptr, 0 }
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};
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static const nsAttrValue::EnumTable* kMenuDefaultType =
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&kMenuTypeTable[1];
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enum SeparatorType
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{
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ST_TRUE_INIT = -1,
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ST_FALSE = 0,
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ST_TRUE = 1
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};
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HTMLMenuElement::HTMLMenuElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
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: nsGenericHTMLElement(std::move(aNodeInfo)), mType(MENU_TYPE_TOOLBAR)
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{
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}
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HTMLMenuElement::~HTMLMenuElement()
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{
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}
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NS_IMPL_ELEMENT_CLONE(HTMLMenuElement)
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void
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HTMLMenuElement::SendShowEvent()
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{
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nsCOMPtr<nsIDocument> document = GetComposedDoc();
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if (!document) {
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return;
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}
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WidgetEvent event(true, eShow);
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event.mFlags.mBubbles = false;
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event.mFlags.mCancelable = false;
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RefPtr<nsPresContext> presContext = document->GetPresContext();
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if (!presContext) {
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return;
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}
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nsEventStatus status = nsEventStatus_eIgnore;
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EventDispatcher::Dispatch(static_cast<nsIContent*>(this), presContext,
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&event, nullptr, &status);
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}
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already_AddRefed<nsIMenuBuilder>
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HTMLMenuElement::CreateBuilder()
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{
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if (mType != MENU_TYPE_CONTEXT) {
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return nullptr;
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}
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nsCOMPtr<nsIMenuBuilder> builder = do_CreateInstance(HTMLMENUBUILDER_CONTRACTID);
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NS_WARNING_ASSERTION(builder, "No builder available");
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return builder.forget();
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}
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void
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HTMLMenuElement::Build(nsIMenuBuilder* aBuilder)
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{
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if (!aBuilder) {
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return;
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}
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BuildSubmenu(EmptyString(), this, aBuilder);
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}
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nsresult
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HTMLMenuElement::AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
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const nsAttrValue* aValue,
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const nsAttrValue* aOldValue,
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nsIPrincipal* aSubjectPrincipal,
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bool aNotify)
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{
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if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::type) {
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if (aValue) {
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mType = aValue->GetEnumValue();
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} else {
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mType = kMenuDefaultType->value;
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}
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}
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return nsGenericHTMLElement::AfterSetAttr(aNameSpaceID, aName, aValue,
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aOldValue, aSubjectPrincipal, aNotify);
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}
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bool
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HTMLMenuElement::ParseAttribute(int32_t aNamespaceID,
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nsAtom* aAttribute,
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const nsAString& aValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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nsAttrValue& aResult)
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{
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if (aNamespaceID == kNameSpaceID_None && aAttribute == nsGkAtoms::type) {
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return aResult.ParseEnumValue(aValue, kMenuTypeTable, false,
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kMenuDefaultType);
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}
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return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
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aMaybeScriptedPrincipal, aResult);
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}
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void
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HTMLMenuElement::BuildSubmenu(const nsAString& aLabel,
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nsIContent* aContent,
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nsIMenuBuilder* aBuilder)
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{
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aBuilder->OpenContainer(aLabel);
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int8_t separator = ST_TRUE_INIT;
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TraverseContent(aContent, aBuilder, separator);
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if (separator == ST_TRUE) {
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aBuilder->UndoAddSeparator();
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}
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aBuilder->CloseContainer();
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}
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// static
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bool
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HTMLMenuElement::CanLoadIcon(nsIContent* aContent, const nsAString& aIcon)
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{
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if (aIcon.IsEmpty()) {
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return false;
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}
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nsIDocument* doc = aContent->OwnerDoc();
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nsCOMPtr<nsIURI> baseURI = aContent->GetBaseURI();
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nsCOMPtr<nsIURI> uri;
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nsContentUtils::NewURIWithDocumentCharset(getter_AddRefs(uri), aIcon, doc,
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baseURI);
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if (!uri) {
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return false;
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}
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return nsContentUtils::CanLoadImage(uri, aContent, doc,
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aContent->NodePrincipal());
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}
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void
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HTMLMenuElement::TraverseContent(nsIContent* aContent,
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nsIMenuBuilder* aBuilder,
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int8_t& aSeparator)
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{
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nsCOMPtr<nsIContent> child;
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for (child = aContent->GetFirstChild(); child;
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child = child->GetNextSibling()) {
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nsGenericHTMLElement* element = nsGenericHTMLElement::FromNode(child);
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if (!element) {
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continue;
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}
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if (child->IsHTMLElement(nsGkAtoms::menuitem)) {
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HTMLMenuItemElement* menuitem = HTMLMenuItemElement::FromNode(child);
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if (menuitem->IsHidden()) {
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continue;
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}
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nsAutoString label;
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menuitem->GetLabel(label);
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if (label.IsEmpty()) {
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continue;
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}
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nsAutoString icon;
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menuitem->GetIcon(icon);
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aBuilder->AddItemFor(menuitem, CanLoadIcon(child, icon));
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aSeparator = ST_FALSE;
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} else if (child->IsHTMLElement(nsGkAtoms::hr)) {
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aBuilder->AddSeparator();
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} else if (child->IsHTMLElement(nsGkAtoms::menu) && !element->IsHidden()) {
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if (child->AsElement()->HasAttr(kNameSpaceID_None, nsGkAtoms::label)) {
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nsAutoString label;
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child->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::label, label);
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BuildSubmenu(label, child, aBuilder);
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aSeparator = ST_FALSE;
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} else {
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AddSeparator(aBuilder, aSeparator);
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TraverseContent(child, aBuilder, aSeparator);
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AddSeparator(aBuilder, aSeparator);
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}
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}
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}
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}
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inline void
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HTMLMenuElement::AddSeparator(nsIMenuBuilder* aBuilder, int8_t& aSeparator)
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{
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if (aSeparator) {
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return;
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}
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aBuilder->AddSeparator();
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aSeparator = ST_TRUE;
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}
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JSObject*
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HTMLMenuElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return HTMLMenuElement_Binding::Wrap(aCx, this, aGivenProto);
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}
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} // namespace dom
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} // namespace mozilla
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