зеркало из https://github.com/mozilla/gecko-dev.git
484 строки
13 KiB
C++
484 строки
13 KiB
C++
/* -*- 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/HTMLMenuItemElement.h"
|
|
|
|
#include "mozilla/BasicEvents.h"
|
|
#include "mozilla/EventDispatcher.h"
|
|
#include "mozilla/dom/HTMLMenuItemElementBinding.h"
|
|
#include "nsAttrValueInlines.h"
|
|
#include "nsContentUtils.h"
|
|
|
|
|
|
NS_IMPL_NS_NEW_HTML_ELEMENT_CHECK_PARSER(MenuItem)
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
// First bits are needed for the menuitem type.
|
|
#define NS_CHECKED_IS_TOGGLED (1 << 2)
|
|
#define NS_ORIGINAL_CHECKED_VALUE (1 << 3)
|
|
#define NS_MENUITEM_TYPE(bits) ((bits) & ~( \
|
|
NS_CHECKED_IS_TOGGLED | NS_ORIGINAL_CHECKED_VALUE))
|
|
|
|
enum CmdType : uint8_t
|
|
{
|
|
CMD_TYPE_MENUITEM = 1,
|
|
CMD_TYPE_CHECKBOX,
|
|
CMD_TYPE_RADIO
|
|
};
|
|
|
|
static const nsAttrValue::EnumTable kMenuItemTypeTable[] = {
|
|
{ "menuitem", CMD_TYPE_MENUITEM },
|
|
{ "checkbox", CMD_TYPE_CHECKBOX },
|
|
{ "radio", CMD_TYPE_RADIO },
|
|
{ nullptr, 0 }
|
|
};
|
|
|
|
static const nsAttrValue::EnumTable* kMenuItemDefaultType =
|
|
&kMenuItemTypeTable[0];
|
|
|
|
// A base class inherited by all radio visitors.
|
|
class Visitor
|
|
{
|
|
public:
|
|
Visitor() { }
|
|
virtual ~Visitor() { }
|
|
|
|
/**
|
|
* Visit a node in the tree. This is meant to be called on all radios in a
|
|
* group, sequentially. If the method returns false then the iteration is
|
|
* stopped.
|
|
*/
|
|
virtual bool Visit(HTMLMenuItemElement* aMenuItem) = 0;
|
|
};
|
|
|
|
// Find the selected radio, see GetSelectedRadio().
|
|
class GetCheckedVisitor : public Visitor
|
|
{
|
|
public:
|
|
explicit GetCheckedVisitor(HTMLMenuItemElement** aResult)
|
|
: mResult(aResult)
|
|
{ }
|
|
virtual bool Visit(HTMLMenuItemElement* aMenuItem) override
|
|
{
|
|
if (aMenuItem->IsChecked()) {
|
|
*mResult = aMenuItem;
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
protected:
|
|
HTMLMenuItemElement** mResult;
|
|
};
|
|
|
|
// Deselect all radios except the one passed to the constructor.
|
|
class ClearCheckedVisitor : public Visitor
|
|
{
|
|
public:
|
|
explicit ClearCheckedVisitor(HTMLMenuItemElement* aExcludeMenuItem)
|
|
: mExcludeMenuItem(aExcludeMenuItem)
|
|
{ }
|
|
virtual bool Visit(HTMLMenuItemElement* aMenuItem) override
|
|
{
|
|
if (aMenuItem != mExcludeMenuItem && aMenuItem->IsChecked()) {
|
|
aMenuItem->ClearChecked();
|
|
}
|
|
return true;
|
|
}
|
|
protected:
|
|
HTMLMenuItemElement* mExcludeMenuItem;
|
|
};
|
|
|
|
// Get current value of the checked dirty flag. The same value is stored on all
|
|
// radios in the group, so we need to check only the first one.
|
|
class GetCheckedDirtyVisitor : public Visitor
|
|
{
|
|
public:
|
|
GetCheckedDirtyVisitor(bool* aCheckedDirty,
|
|
HTMLMenuItemElement* aExcludeMenuItem)
|
|
: mCheckedDirty(aCheckedDirty),
|
|
mExcludeMenuItem(aExcludeMenuItem)
|
|
{ }
|
|
virtual bool Visit(HTMLMenuItemElement* aMenuItem) override
|
|
{
|
|
if (aMenuItem == mExcludeMenuItem) {
|
|
return true;
|
|
}
|
|
*mCheckedDirty = aMenuItem->IsCheckedDirty();
|
|
return false;
|
|
}
|
|
protected:
|
|
bool* mCheckedDirty;
|
|
HTMLMenuItemElement* mExcludeMenuItem;
|
|
};
|
|
|
|
// Set checked dirty to true on all radios in the group.
|
|
class SetCheckedDirtyVisitor : public Visitor
|
|
{
|
|
public:
|
|
SetCheckedDirtyVisitor()
|
|
{ }
|
|
virtual bool Visit(HTMLMenuItemElement* aMenuItem) override
|
|
{
|
|
aMenuItem->SetCheckedDirty();
|
|
return true;
|
|
}
|
|
};
|
|
|
|
// A helper visitor that is used to combine two operations (visitors) to avoid
|
|
// iterating over radios twice.
|
|
class CombinedVisitor : public Visitor
|
|
{
|
|
public:
|
|
CombinedVisitor(Visitor* aVisitor1, Visitor* aVisitor2)
|
|
: mVisitor1(aVisitor1), mVisitor2(aVisitor2),
|
|
mContinue1(true), mContinue2(true)
|
|
{ }
|
|
virtual bool Visit(HTMLMenuItemElement* aMenuItem) override
|
|
{
|
|
if (mContinue1) {
|
|
mContinue1 = mVisitor1->Visit(aMenuItem);
|
|
}
|
|
if (mContinue2) {
|
|
mContinue2 = mVisitor2->Visit(aMenuItem);
|
|
}
|
|
return mContinue1 || mContinue2;
|
|
}
|
|
protected:
|
|
Visitor* mVisitor1;
|
|
Visitor* mVisitor2;
|
|
bool mContinue1;
|
|
bool mContinue2;
|
|
};
|
|
|
|
|
|
HTMLMenuItemElement::HTMLMenuItemElement(
|
|
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo, FromParser aFromParser)
|
|
: nsGenericHTMLElement(std::move(aNodeInfo)),
|
|
mType(kMenuItemDefaultType->value),
|
|
mParserCreating(false),
|
|
mShouldInitChecked(false),
|
|
mCheckedDirty(false),
|
|
mChecked(false)
|
|
{
|
|
mParserCreating = aFromParser;
|
|
}
|
|
|
|
HTMLMenuItemElement::~HTMLMenuItemElement()
|
|
{
|
|
}
|
|
|
|
|
|
//NS_IMPL_ELEMENT_CLONE(HTMLMenuItemElement)
|
|
|
|
nsresult
|
|
HTMLMenuItemElement::Clone(dom::NodeInfo* aNodeInfo, nsINode** aResult) const
|
|
{
|
|
*aResult = nullptr;
|
|
RefPtr<HTMLMenuItemElement> it =
|
|
new HTMLMenuItemElement(do_AddRef(aNodeInfo), NOT_FROM_PARSER);
|
|
nsresult rv = const_cast<HTMLMenuItemElement*>(this)->CopyInnerTo(it);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
switch (mType) {
|
|
case CMD_TYPE_CHECKBOX:
|
|
case CMD_TYPE_RADIO:
|
|
if (mCheckedDirty) {
|
|
// We no longer have our original checked state. Set our
|
|
// checked state on the clone.
|
|
it->mCheckedDirty = true;
|
|
it->mChecked = mChecked;
|
|
}
|
|
break;
|
|
}
|
|
|
|
it.forget(aResult);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
HTMLMenuItemElement::GetType(DOMString& aValue)
|
|
{
|
|
GetEnumAttr(nsGkAtoms::type, kMenuItemDefaultType->tag, aValue);
|
|
}
|
|
|
|
void
|
|
HTMLMenuItemElement::SetChecked(bool aChecked)
|
|
{
|
|
bool checkedChanged = mChecked != aChecked;
|
|
|
|
mChecked = aChecked;
|
|
|
|
if (mType == CMD_TYPE_RADIO) {
|
|
if (checkedChanged) {
|
|
if (mCheckedDirty) {
|
|
ClearCheckedVisitor visitor(this);
|
|
WalkRadioGroup(&visitor);
|
|
} else {
|
|
ClearCheckedVisitor visitor1(this);
|
|
SetCheckedDirtyVisitor visitor2;
|
|
CombinedVisitor visitor(&visitor1, &visitor2);
|
|
WalkRadioGroup(&visitor);
|
|
}
|
|
} else if (!mCheckedDirty) {
|
|
SetCheckedDirtyVisitor visitor;
|
|
WalkRadioGroup(&visitor);
|
|
}
|
|
} else {
|
|
mCheckedDirty = true;
|
|
}
|
|
}
|
|
|
|
void
|
|
HTMLMenuItemElement::GetEventTargetParent(EventChainPreVisitor& aVisitor)
|
|
{
|
|
if (aVisitor.mEvent->mMessage == eMouseClick) {
|
|
|
|
bool originalCheckedValue = false;
|
|
switch (mType) {
|
|
case CMD_TYPE_CHECKBOX:
|
|
originalCheckedValue = mChecked;
|
|
SetChecked(!originalCheckedValue);
|
|
aVisitor.mItemFlags |= NS_CHECKED_IS_TOGGLED;
|
|
break;
|
|
case CMD_TYPE_RADIO:
|
|
// casting back to Element* here to resolve nsISupports ambiguity.
|
|
Element* supports = GetSelectedRadio();
|
|
aVisitor.mItemData = supports;
|
|
|
|
originalCheckedValue = mChecked;
|
|
if (!originalCheckedValue) {
|
|
SetChecked(true);
|
|
aVisitor.mItemFlags |= NS_CHECKED_IS_TOGGLED;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (originalCheckedValue) {
|
|
aVisitor.mItemFlags |= NS_ORIGINAL_CHECKED_VALUE;
|
|
}
|
|
|
|
// We must cache type because mType may change during JS event.
|
|
aVisitor.mItemFlags |= mType;
|
|
}
|
|
|
|
nsGenericHTMLElement::GetEventTargetParent(aVisitor);
|
|
}
|
|
|
|
nsresult
|
|
HTMLMenuItemElement::PostHandleEvent(EventChainPostVisitor& aVisitor)
|
|
{
|
|
// Check to see if the event was cancelled.
|
|
if (aVisitor.mEvent->mMessage == eMouseClick &&
|
|
aVisitor.mItemFlags & NS_CHECKED_IS_TOGGLED &&
|
|
aVisitor.mEventStatus == nsEventStatus_eConsumeNoDefault) {
|
|
bool originalCheckedValue =
|
|
!!(aVisitor.mItemFlags & NS_ORIGINAL_CHECKED_VALUE);
|
|
uint8_t oldType = NS_MENUITEM_TYPE(aVisitor.mItemFlags);
|
|
|
|
nsCOMPtr<nsIContent> content(do_QueryInterface(aVisitor.mItemData));
|
|
RefPtr<HTMLMenuItemElement> selectedRadio = HTMLMenuItemElement::FromNodeOrNull(content);
|
|
if (selectedRadio) {
|
|
selectedRadio->SetChecked(true);
|
|
if (mType != CMD_TYPE_RADIO) {
|
|
SetChecked(false);
|
|
}
|
|
} else if (oldType == CMD_TYPE_CHECKBOX) {
|
|
SetChecked(originalCheckedValue);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
HTMLMenuItemElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
|
|
nsIContent* aBindingParent)
|
|
{
|
|
nsresult rv = nsGenericHTMLElement::BindToTree(aDocument, aParent,
|
|
aBindingParent);
|
|
|
|
if (NS_SUCCEEDED(rv) && aDocument && mType == CMD_TYPE_RADIO) {
|
|
AddedToRadioGroup();
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
bool
|
|
HTMLMenuItemElement::ParseAttribute(int32_t aNamespaceID,
|
|
nsAtom* aAttribute,
|
|
const nsAString& aValue,
|
|
nsIPrincipal* aMaybeScriptedPrincipal,
|
|
nsAttrValue& aResult)
|
|
{
|
|
if (aNamespaceID == kNameSpaceID_None) {
|
|
if (aAttribute == nsGkAtoms::type) {
|
|
return aResult.ParseEnumValue(aValue, kMenuItemTypeTable, false,
|
|
kMenuItemDefaultType);
|
|
}
|
|
|
|
if (aAttribute == nsGkAtoms::radiogroup) {
|
|
aResult.ParseAtom(aValue);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
|
|
aMaybeScriptedPrincipal, aResult);
|
|
}
|
|
|
|
void
|
|
HTMLMenuItemElement::DoneCreatingElement()
|
|
{
|
|
mParserCreating = false;
|
|
|
|
if (mShouldInitChecked) {
|
|
InitChecked();
|
|
mShouldInitChecked = false;
|
|
}
|
|
}
|
|
|
|
void
|
|
HTMLMenuItemElement::GetText(nsAString& aText)
|
|
{
|
|
nsAutoString text;
|
|
nsContentUtils::GetNodeTextContent(this, false, text);
|
|
|
|
text.CompressWhitespace(true, true);
|
|
aText = text;
|
|
}
|
|
|
|
nsresult
|
|
HTMLMenuItemElement::AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
|
|
const nsAttrValue* aValue,
|
|
const nsAttrValue* aOldValue,
|
|
nsIPrincipal* aSubjectPrincipal,
|
|
bool aNotify)
|
|
{
|
|
if (aNameSpaceID == kNameSpaceID_None) {
|
|
// Handle type changes first, since some of the later conditions in this
|
|
// method look at mType and want to see the new value.
|
|
if (aName == nsGkAtoms::type) {
|
|
if (aValue) {
|
|
mType = aValue->GetEnumValue();
|
|
} else {
|
|
mType = kMenuItemDefaultType->value;
|
|
}
|
|
}
|
|
|
|
if ((aName == nsGkAtoms::radiogroup || aName == nsGkAtoms::type) &&
|
|
mType == CMD_TYPE_RADIO &&
|
|
!mParserCreating) {
|
|
if (IsInUncomposedDoc() && GetParent()) {
|
|
AddedToRadioGroup();
|
|
}
|
|
}
|
|
|
|
// Checked must be set no matter what type of menuitem it is, since
|
|
// GetChecked() must reflect the new value
|
|
if (aName == nsGkAtoms::checked &&
|
|
!mCheckedDirty) {
|
|
if (mParserCreating) {
|
|
mShouldInitChecked = true;
|
|
} else {
|
|
InitChecked();
|
|
}
|
|
}
|
|
}
|
|
|
|
return nsGenericHTMLElement::AfterSetAttr(aNameSpaceID, aName, aValue,
|
|
aOldValue, aSubjectPrincipal, aNotify);
|
|
}
|
|
|
|
void
|
|
HTMLMenuItemElement::WalkRadioGroup(Visitor* aVisitor)
|
|
{
|
|
nsIContent* parent = GetParent();
|
|
if (!parent) {
|
|
aVisitor->Visit(this);
|
|
return;
|
|
}
|
|
|
|
BorrowedAttrInfo info1(GetAttrInfo(kNameSpaceID_None,
|
|
nsGkAtoms::radiogroup));
|
|
bool info1Empty = !info1.mValue || info1.mValue->IsEmptyString();
|
|
|
|
for (nsIContent* cur = parent->GetFirstChild();
|
|
cur;
|
|
cur = cur->GetNextSibling()) {
|
|
HTMLMenuItemElement* menuitem = HTMLMenuItemElement::FromNode(cur);
|
|
|
|
if (!menuitem || menuitem->GetType() != CMD_TYPE_RADIO) {
|
|
continue;
|
|
}
|
|
|
|
BorrowedAttrInfo info2(menuitem->GetAttrInfo(kNameSpaceID_None,
|
|
nsGkAtoms::radiogroup));
|
|
bool info2Empty = !info2.mValue || info2.mValue->IsEmptyString();
|
|
|
|
if (info1Empty != info2Empty ||
|
|
(info1.mValue && info2.mValue && !info1.mValue->Equals(*info2.mValue))) {
|
|
continue;
|
|
}
|
|
|
|
if (!aVisitor->Visit(menuitem)) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
HTMLMenuItemElement*
|
|
HTMLMenuItemElement::GetSelectedRadio()
|
|
{
|
|
HTMLMenuItemElement* result = nullptr;
|
|
|
|
GetCheckedVisitor visitor(&result);
|
|
WalkRadioGroup(&visitor);
|
|
|
|
return result;
|
|
}
|
|
|
|
void
|
|
HTMLMenuItemElement::AddedToRadioGroup()
|
|
{
|
|
bool checkedDirty = mCheckedDirty;
|
|
if (mChecked) {
|
|
ClearCheckedVisitor visitor1(this);
|
|
GetCheckedDirtyVisitor visitor2(&checkedDirty, this);
|
|
CombinedVisitor visitor(&visitor1, &visitor2);
|
|
WalkRadioGroup(&visitor);
|
|
} else {
|
|
GetCheckedDirtyVisitor visitor(&checkedDirty, this);
|
|
WalkRadioGroup(&visitor);
|
|
}
|
|
mCheckedDirty = checkedDirty;
|
|
}
|
|
|
|
void
|
|
HTMLMenuItemElement::InitChecked()
|
|
{
|
|
bool defaultChecked = DefaultChecked();
|
|
mChecked = defaultChecked;
|
|
if (mType == CMD_TYPE_RADIO) {
|
|
ClearCheckedVisitor visitor(this);
|
|
WalkRadioGroup(&visitor);
|
|
}
|
|
}
|
|
|
|
JSObject*
|
|
HTMLMenuItemElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
|
|
{
|
|
return HTMLMenuItemElement_Binding::Wrap(aCx, this, aGivenProto);
|
|
}
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|
|
|
|
#undef NS_ORIGINAL_CHECKED_VALUE
|