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gecko-dev/dom/html/HTMLTextAreaElement.cpp

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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/HTMLTextAreaElement.h"
#include "mozAutoDocUpdate.h"
#include "mozilla/AsyncEventDispatcher.h"
#include "mozilla/Attributes.h"
#include "mozilla/dom/HTMLFormSubmission.h"
#include "mozilla/dom/HTMLTextAreaElementBinding.h"
#include "mozilla/EventDispatcher.h"
#include "mozilla/EventStates.h"
#include "mozilla/MouseEvents.h"
#include "nsAttrValueInlines.h"
#include "nsContentCID.h"
#include "nsContentCreatorFunctions.h"
#include "nsError.h"
#include "nsFocusManager.h"
#include "nsIComponentManager.h"
#include "nsIConstraintValidation.h"
#include "nsIControllers.h"
#include "nsIDocument.h"
#include "nsIDOMHTMLFormElement.h"
#include "nsIFormControlFrame.h"
#include "nsIFormControl.h"
#include "nsIForm.h"
#include "nsIFrame.h"
#include "nsISupportsPrimitives.h"
#include "nsITextControlFrame.h"
#include "nsLayoutUtils.h"
#include "nsLinebreakConverter.h"
#include "nsMappedAttributes.h"
#include "nsPIDOMWindow.h"
#include "nsPresContext.h"
#include "nsPresState.h"
#include "nsReadableUtils.h"
#include "nsRuleData.h"
#include "nsStyleConsts.h"
#include "nsTextEditorState.h"
#include "nsIController.h"
static NS_DEFINE_CID(kXULControllersCID, NS_XULCONTROLLERS_CID);
#define NS_NO_CONTENT_DISPATCH (1 << 0)
NS_IMPL_NS_NEW_HTML_ELEMENT_CHECK_PARSER(TextArea)
namespace mozilla {
namespace dom {
HTMLTextAreaElement::HTMLTextAreaElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo,
FromParser aFromParser)
: nsGenericHTMLFormElementWithState(aNodeInfo),
mValueChanged(false),
mHandlingSelect(false),
mDoneAddingChildren(!aFromParser),
mInhibitStateRestoration(!!(aFromParser & FROM_PARSER_FRAGMENT)),
mDisabledChanged(false),
mCanShowInvalidUI(true),
mCanShowValidUI(true),
mState(this)
{
AddMutationObserver(this);
// Set up our default state. By default we're enabled (since we're
// a control type that can be disabled but not actually disabled
// right now), optional, and valid. We are NOT readwrite by default
// until someone calls UpdateEditableState on us, apparently! Also
// by default we don't have to show validity UI and so forth.
AddStatesSilently(NS_EVENT_STATE_ENABLED |
NS_EVENT_STATE_OPTIONAL |
NS_EVENT_STATE_VALID);
}
NS_IMPL_CYCLE_COLLECTION_INHERITED(HTMLTextAreaElement,
nsGenericHTMLFormElementWithState,
mValidity,
mControllers,
mState)
NS_IMPL_ADDREF_INHERITED(HTMLTextAreaElement, Element)
NS_IMPL_RELEASE_INHERITED(HTMLTextAreaElement, Element)
// QueryInterface implementation for HTMLTextAreaElement
NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(HTMLTextAreaElement)
NS_INTERFACE_TABLE_INHERITED(HTMLTextAreaElement,
nsIDOMHTMLTextAreaElement,
nsITextControlElement,
nsIDOMNSEditableElement,
nsIMutationObserver,
nsIConstraintValidation)
NS_INTERFACE_TABLE_TAIL_INHERITING(nsGenericHTMLFormElementWithState)
// nsIDOMHTMLTextAreaElement
NS_IMPL_ELEMENT_CLONE(HTMLTextAreaElement)
// nsIConstraintValidation
NS_IMPL_NSICONSTRAINTVALIDATION_EXCEPT_SETCUSTOMVALIDITY(HTMLTextAreaElement)
NS_IMETHODIMP
HTMLTextAreaElement::GetForm(nsIDOMHTMLFormElement** aForm)
{
return nsGenericHTMLFormElementWithState::GetForm(aForm);
}
// nsIContent
NS_IMETHODIMP
HTMLTextAreaElement::Select()
{
// XXX Bug? We have to give the input focus before contents can be
// selected
FocusTristate state = FocusState();
if (state == eUnfocusable) {
return NS_OK;
}
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
RefPtr<nsPresContext> presContext = GetPresContext(eForComposedDoc);
if (state == eInactiveWindow) {
if (fm)
fm->SetFocus(this, nsIFocusManager::FLAG_NOSCROLL);
SelectAll(presContext);
return NS_OK;
}
nsEventStatus status = nsEventStatus_eIgnore;
WidgetGUIEvent event(true, eFormSelect, nullptr);
// XXXbz HTMLInputElement guards against this reentering; shouldn't we?
EventDispatcher::Dispatch(static_cast<nsIContent*>(this), presContext,
&event, nullptr, &status);
// If the DOM event was not canceled (e.g. by a JS event handler
// returning false)
if (status == nsEventStatus_eIgnore) {
if (fm) {
fm->SetFocus(this, nsIFocusManager::FLAG_NOSCROLL);
// ensure that the element is actually focused
nsCOMPtr<nsIDOMElement> focusedElement;
fm->GetFocusedElement(getter_AddRefs(focusedElement));
if (SameCOMIdentity(static_cast<nsIDOMNode*>(this), focusedElement)) {
// Now Select all the text!
SelectAll(presContext);
}
}
}
return NS_OK;
}
NS_IMETHODIMP
HTMLTextAreaElement::SelectAll(nsPresContext* aPresContext)
{
nsIFormControlFrame* formControlFrame = GetFormControlFrame(true);
if (formControlFrame) {
formControlFrame->SetFormProperty(nsGkAtoms::select, EmptyString());
}
return NS_OK;
}
bool
HTMLTextAreaElement::IsHTMLFocusable(bool aWithMouse,
bool *aIsFocusable, int32_t *aTabIndex)
{
if (nsGenericHTMLFormElementWithState::IsHTMLFocusable(aWithMouse, aIsFocusable,
aTabIndex))
{
return true;
}
// disabled textareas are not focusable
*aIsFocusable = !IsDisabled();
return false;
}
NS_IMPL_BOOL_ATTR(HTMLTextAreaElement, Autofocus, autofocus)
NS_IMPL_UINT_ATTR_NON_ZERO_DEFAULT_VALUE(HTMLTextAreaElement, Cols, cols, DEFAULT_COLS)
NS_IMPL_BOOL_ATTR(HTMLTextAreaElement, Disabled, disabled)
NS_IMPL_NON_NEGATIVE_INT_ATTR(HTMLTextAreaElement, MaxLength, maxlength)
NS_IMPL_STRING_ATTR(HTMLTextAreaElement, Name, name)
NS_IMPL_BOOL_ATTR(HTMLTextAreaElement, ReadOnly, readonly)
NS_IMPL_BOOL_ATTR(HTMLTextAreaElement, Required, required)
NS_IMPL_UINT_ATTR_NON_ZERO_DEFAULT_VALUE(HTMLTextAreaElement, Rows, rows, DEFAULT_ROWS_TEXTAREA)
NS_IMPL_STRING_ATTR(HTMLTextAreaElement, Wrap, wrap)
NS_IMPL_STRING_ATTR(HTMLTextAreaElement, Placeholder, placeholder)
int32_t
HTMLTextAreaElement::TabIndexDefault()
{
return 0;
}
NS_IMETHODIMP
HTMLTextAreaElement::GetType(nsAString& aType)
{
aType.AssignLiteral("textarea");
return NS_OK;
}
NS_IMETHODIMP
HTMLTextAreaElement::GetValue(nsAString& aValue)
{
GetValueInternal(aValue, true);
return NS_OK;
}
void
HTMLTextAreaElement::GetValueInternal(nsAString& aValue, bool aIgnoreWrap) const
{
mState.GetValue(aValue, aIgnoreWrap);
}
NS_IMETHODIMP_(nsIEditor*)
HTMLTextAreaElement::GetTextEditor()
{
return GetEditor();
}
NS_IMETHODIMP_(nsISelectionController*)
HTMLTextAreaElement::GetSelectionController()
{
return mState.GetSelectionController();
}
NS_IMETHODIMP_(nsFrameSelection*)
HTMLTextAreaElement::GetConstFrameSelection()
{
return mState.GetConstFrameSelection();
}
NS_IMETHODIMP
HTMLTextAreaElement::BindToFrame(nsTextControlFrame* aFrame)
{
return mState.BindToFrame(aFrame);
}
NS_IMETHODIMP_(void)
HTMLTextAreaElement::UnbindFromFrame(nsTextControlFrame* aFrame)
{
if (aFrame) {
mState.UnbindFromFrame(aFrame);
}
}
NS_IMETHODIMP
HTMLTextAreaElement::CreateEditor()
{
return mState.PrepareEditor();
}
NS_IMETHODIMP_(nsIContent*)
HTMLTextAreaElement::GetRootEditorNode()
{
return mState.GetRootNode();
}
NS_IMETHODIMP_(Element*)
HTMLTextAreaElement::CreatePlaceholderNode()
{
NS_ENSURE_SUCCESS(mState.CreatePlaceholderNode(), nullptr);
return mState.GetPlaceholderNode();
}
NS_IMETHODIMP_(Element*)
HTMLTextAreaElement::GetPlaceholderNode()
{
return mState.GetPlaceholderNode();
}
NS_IMETHODIMP_(void)
HTMLTextAreaElement::UpdatePlaceholderVisibility(bool aNotify)
{
mState.UpdatePlaceholderVisibility(aNotify);
}
NS_IMETHODIMP_(bool)
HTMLTextAreaElement::GetPlaceholderVisibility()
{
return mState.GetPlaceholderVisibility();
}
nsresult
HTMLTextAreaElement::SetValueInternal(const nsAString& aValue,
uint32_t aFlags)
{
// Need to set the value changed flag here, so that
// nsTextControlFrame::UpdateValueDisplay retrieves the correct value
// if needed.
SetValueChanged(true);
aFlags |= nsTextEditorState::eSetValue_Notify;
if (!mState.SetValue(aValue, aFlags)) {
return NS_ERROR_OUT_OF_MEMORY;
}
return NS_OK;
}
NS_IMETHODIMP
HTMLTextAreaElement::SetValue(const nsAString& aValue)
{
// If the value has been set by a script, we basically want to keep the
// current change event state. If the element is ready to fire a change
// event, we should keep it that way. Otherwise, we should make sure the
// element will not fire any event because of the script interaction.
//
// NOTE: this is currently quite expensive work (too much string
// manipulation). We should probably optimize that.
nsAutoString currentValue;
GetValueInternal(currentValue, true);
nsresult rv =
SetValueInternal(aValue, nsTextEditorState::eSetValue_ByContent);
NS_ENSURE_SUCCESS(rv, rv);
if (mFocusedValue.Equals(currentValue)) {
GetValueInternal(mFocusedValue, true);
}
return NS_OK;
}
NS_IMETHODIMP
HTMLTextAreaElement::SetUserInput(const nsAString& aValue)
{
if (!nsContentUtils::IsCallerChrome()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
return SetValueInternal(aValue, nsTextEditorState::eSetValue_BySetUserInput);
}
NS_IMETHODIMP
HTMLTextAreaElement::SetValueChanged(bool aValueChanged)
{
bool previousValue = mValueChanged;
mValueChanged = aValueChanged;
if (!aValueChanged && !mState.IsEmpty()) {
mState.EmptyValue();
}
if (mValueChanged != previousValue) {
UpdateState(true);
}
return NS_OK;
}
NS_IMETHODIMP
HTMLTextAreaElement::GetDefaultValue(nsAString& aDefaultValue)
{
if (!nsContentUtils::GetNodeTextContent(this, false, aDefaultValue, fallible)) {
return NS_ERROR_OUT_OF_MEMORY;
}
return NS_OK;
}
NS_IMETHODIMP
HTMLTextAreaElement::SetDefaultValue(const nsAString& aDefaultValue)
{
ErrorResult error;
SetDefaultValue(aDefaultValue, error);
return error.StealNSResult();
}
void
HTMLTextAreaElement::SetDefaultValue(const nsAString& aDefaultValue, ErrorResult& aError)
{
nsresult rv = nsContentUtils::SetNodeTextContent(this, aDefaultValue, true);
if (NS_SUCCEEDED(rv) && !mValueChanged) {
Reset();
}
if (NS_FAILED(rv)) {
aError.Throw(rv);
}
}
bool
HTMLTextAreaElement::ParseAttribute(int32_t aNamespaceID,
nsIAtom* aAttribute,
const nsAString& aValue,
nsAttrValue& aResult)
{
if (aNamespaceID == kNameSpaceID_None) {
if (aAttribute == nsGkAtoms::maxlength) {
return aResult.ParseNonNegativeIntValue(aValue);
} else if (aAttribute == nsGkAtoms::cols ||
aAttribute == nsGkAtoms::rows) {
return aResult.ParsePositiveIntValue(aValue);
}
}
return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
aResult);
}
void
HTMLTextAreaElement::MapAttributesIntoRule(const nsMappedAttributes* aAttributes,
nsRuleData* aData)
{
if (aData->mSIDs & NS_STYLE_INHERIT_BIT(Text)) {
// wrap=off
nsCSSValue* whiteSpace = aData->ValueForWhiteSpace();
if (whiteSpace->GetUnit() == eCSSUnit_Null) {
const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::wrap);
if (value && value->Type() == nsAttrValue::eString &&
value->Equals(nsGkAtoms::OFF, eIgnoreCase)) {
whiteSpace->SetIntValue(NS_STYLE_WHITESPACE_PRE, eCSSUnit_Enumerated);
}
}
}
nsGenericHTMLFormElementWithState::MapDivAlignAttributeInto(aAttributes, aData);
nsGenericHTMLFormElementWithState::MapCommonAttributesInto(aAttributes, aData);
}
nsChangeHint
HTMLTextAreaElement::GetAttributeChangeHint(const nsIAtom* aAttribute,
int32_t aModType) const
{
nsChangeHint retval =
nsGenericHTMLFormElementWithState::GetAttributeChangeHint(aAttribute, aModType);
if (aAttribute == nsGkAtoms::rows ||
aAttribute == nsGkAtoms::cols) {
retval |= NS_STYLE_HINT_REFLOW;
} else if (aAttribute == nsGkAtoms::wrap) {
retval |= nsChangeHint_ReconstructFrame;
} else if (aAttribute == nsGkAtoms::placeholder) {
retval |= NS_STYLE_HINT_FRAMECHANGE;
}
return retval;
}
NS_IMETHODIMP_(bool)
HTMLTextAreaElement::IsAttributeMapped(const nsIAtom* aAttribute) const
{
static const MappedAttributeEntry attributes[] = {
{ &nsGkAtoms::wrap },
{ nullptr }
};
static const MappedAttributeEntry* const map[] = {
attributes,
sDivAlignAttributeMap,
sCommonAttributeMap,
};
return FindAttributeDependence(aAttribute, map);
}
nsMapRuleToAttributesFunc
HTMLTextAreaElement::GetAttributeMappingFunction() const
{
return &MapAttributesIntoRule;
}
bool
HTMLTextAreaElement::IsDisabledForEvents(EventMessage aMessage)
{
nsIFormControlFrame* formControlFrame = GetFormControlFrame(false);
nsIFrame* formFrame = do_QueryFrame(formControlFrame);
return IsElementDisabledForEvents(aMessage, formFrame);
}
nsresult
HTMLTextAreaElement::PreHandleEvent(EventChainPreVisitor& aVisitor)
{
aVisitor.mCanHandle = false;
if (IsDisabledForEvents(aVisitor.mEvent->mMessage)) {
return NS_OK;
}
// Don't dispatch a second select event if we are already handling
// one.
if (aVisitor.mEvent->mMessage == eFormSelect) {
if (mHandlingSelect) {
return NS_OK;
}
mHandlingSelect = true;
}
// If noContentDispatch is true we will not allow content to handle
// this event. But to allow middle mouse button paste to work we must allow
// middle clicks to go to text fields anyway.
if (aVisitor.mEvent->mFlags.mNoContentDispatch) {
aVisitor.mItemFlags |= NS_NO_CONTENT_DISPATCH;
}
if (aVisitor.mEvent->mMessage == eMouseClick &&
aVisitor.mEvent->AsMouseEvent()->button ==
WidgetMouseEvent::eMiddleButton) {
aVisitor.mEvent->mFlags.mNoContentDispatch = false;
}
// Fire onchange (if necessary), before we do the blur, bug 370521.
if (aVisitor.mEvent->mMessage == eBlur) {
FireChangeEventIfNeeded();
}
return nsGenericHTMLFormElementWithState::PreHandleEvent(aVisitor);
}
void
HTMLTextAreaElement::FireChangeEventIfNeeded()
{
nsString value;
GetValueInternal(value, true);
if (mFocusedValue.Equals(value)) {
return;
}
// Dispatch the change event.
mFocusedValue = value;
nsContentUtils::DispatchTrustedEvent(OwnerDoc(),
static_cast<nsIContent*>(this),
NS_LITERAL_STRING("change"), true,
false);
}
nsresult
HTMLTextAreaElement::PostHandleEvent(EventChainPostVisitor& aVisitor)
{
if (aVisitor.mEvent->mMessage == eFormSelect) {
mHandlingSelect = false;
}
if (aVisitor.mEvent->mMessage == eFocus ||
aVisitor.mEvent->mMessage == eBlur) {
if (aVisitor.mEvent->mMessage == eFocus) {
// If the invalid UI is shown, we should show it while focusing (and
// update). Otherwise, we should not.
GetValueInternal(mFocusedValue, true);
mCanShowInvalidUI = !IsValid() && ShouldShowValidityUI();
// If neither invalid UI nor valid UI is shown, we shouldn't show the valid
// UI while typing.
mCanShowValidUI = ShouldShowValidityUI();
} else { // eBlur
mCanShowInvalidUI = true;
mCanShowValidUI = true;
}
UpdateState(true);
}
// Reset the flag for other content besides this text field
aVisitor.mEvent->mFlags.mNoContentDispatch =
((aVisitor.mItemFlags & NS_NO_CONTENT_DISPATCH) != 0);
return NS_OK;
}
void
HTMLTextAreaElement::DoneAddingChildren(bool aHaveNotified)
{
if (!mValueChanged) {
if (!mDoneAddingChildren) {
// Reset now that we're done adding children if the content sink tried to
// sneak some text in without calling AppendChildTo.
Reset();
}
if (!mInhibitStateRestoration) {
nsresult rv = GenerateStateKey();
if (NS_SUCCEEDED(rv)) {
RestoreFormControlState();
}
}
}
mDoneAddingChildren = true;
}
bool
HTMLTextAreaElement::IsDoneAddingChildren()
{
return mDoneAddingChildren;
}
// Controllers Methods
nsIControllers*
HTMLTextAreaElement::GetControllers(ErrorResult& aError)
{
if (!mControllers)
{
nsresult rv;
mControllers = do_CreateInstance(kXULControllersCID, &rv);
if (NS_FAILED(rv)) {
aError.Throw(rv);
return nullptr;
}
nsCOMPtr<nsIController> controller = do_CreateInstance("@mozilla.org/editor/editorcontroller;1", &rv);
if (NS_FAILED(rv)) {
aError.Throw(rv);
return nullptr;
}
mControllers->AppendController(controller);
controller = do_CreateInstance("@mozilla.org/editor/editingcontroller;1", &rv);
if (NS_FAILED(rv)) {
aError.Throw(rv);
return nullptr;
}
mControllers->AppendController(controller);
}
return mControllers;
}
NS_IMETHODIMP
HTMLTextAreaElement::GetControllers(nsIControllers** aResult)
{
NS_ENSURE_ARG_POINTER(aResult);
ErrorResult error;
*aResult = GetControllers(error);
NS_IF_ADDREF(*aResult);
return error.StealNSResult();
}
uint32_t
HTMLTextAreaElement::GetTextLength()
{
nsAutoString val;
GetValue(val);
return val.Length();
}
NS_IMETHODIMP
HTMLTextAreaElement::GetTextLength(int32_t *aTextLength)
{
NS_ENSURE_ARG_POINTER(aTextLength);
*aTextLength = GetTextLength();
return NS_OK;
}
NS_IMETHODIMP
HTMLTextAreaElement::GetSelectionStart(int32_t *aSelectionStart)
{
NS_ENSURE_ARG_POINTER(aSelectionStart);
ErrorResult error;
*aSelectionStart = GetSelectionStart(error);
return error.StealNSResult();
}
uint32_t
HTMLTextAreaElement::GetSelectionStart(ErrorResult& aError)
{
int32_t selStart, selEnd;
nsresult rv = GetSelectionRange(&selStart, &selEnd);
if (NS_FAILED(rv) && mState.IsSelectionCached()) {
return mState.GetSelectionProperties().mStart;
}
if (NS_FAILED(rv)) {
aError.Throw(rv);
}
return selStart;
}
NS_IMETHODIMP
HTMLTextAreaElement::SetSelectionStart(int32_t aSelectionStart)
{
ErrorResult error;
SetSelectionStart(aSelectionStart, error);
return error.StealNSResult();
}
void
HTMLTextAreaElement::SetSelectionStart(uint32_t aSelectionStart, ErrorResult& aError)
{
if (mState.IsSelectionCached()) {
mState.GetSelectionProperties().mStart = aSelectionStart;
return;
}
nsAutoString direction;
nsresult rv = GetSelectionDirection(direction);
if (NS_FAILED(rv)) {
aError.Throw(rv);
return;
}
int32_t start, end;
rv = GetSelectionRange(&start, &end);
if (NS_FAILED(rv)) {
aError.Throw(rv);
return;
}
start = aSelectionStart;
if (end < start) {
end = start;
}
rv = SetSelectionRange(start, end, direction);
if (NS_FAILED(rv)) {
aError.Throw(rv);
}
}
NS_IMETHODIMP
HTMLTextAreaElement::GetSelectionEnd(int32_t *aSelectionEnd)
{
NS_ENSURE_ARG_POINTER(aSelectionEnd);
ErrorResult error;
*aSelectionEnd = GetSelectionEnd(error);
return error.StealNSResult();
}
uint32_t
HTMLTextAreaElement::GetSelectionEnd(ErrorResult& aError)
{
int32_t selStart, selEnd;
nsresult rv = GetSelectionRange(&selStart, &selEnd);
if (NS_FAILED(rv) && mState.IsSelectionCached()) {
return mState.GetSelectionProperties().mEnd;
}
if (NS_FAILED(rv)) {
aError.Throw(rv);
}
return selEnd;
}
NS_IMETHODIMP
HTMLTextAreaElement::SetSelectionEnd(int32_t aSelectionEnd)
{
ErrorResult error;
SetSelectionEnd(aSelectionEnd, error);
return error.StealNSResult();
}
void
HTMLTextAreaElement::SetSelectionEnd(uint32_t aSelectionEnd, ErrorResult& aError)
{
if (mState.IsSelectionCached()) {
mState.GetSelectionProperties().mEnd = aSelectionEnd;
return;
}
nsAutoString direction;
nsresult rv = GetSelectionDirection(direction);
if (NS_FAILED(rv)) {
aError.Throw(rv);
return;
}
int32_t start, end;
rv = GetSelectionRange(&start, &end);
if (NS_FAILED(rv)) {
aError.Throw(rv);
return;
}
end = aSelectionEnd;
if (start > end) {
start = end;
}
rv = SetSelectionRange(start, end, direction);
if (NS_FAILED(rv)) {
aError.Throw(rv);
}
}
nsresult
HTMLTextAreaElement::GetSelectionRange(int32_t* aSelectionStart,
int32_t* aSelectionEnd)
{
nsIFormControlFrame* formControlFrame = GetFormControlFrame(true);
nsITextControlFrame* textControlFrame = do_QueryFrame(formControlFrame);
if (textControlFrame) {
return textControlFrame->GetSelectionRange(aSelectionStart, aSelectionEnd);
}
return NS_ERROR_FAILURE;
}
static void
DirectionToName(nsITextControlFrame::SelectionDirection dir, nsAString& aDirection)
{
if (dir == nsITextControlFrame::eNone) {
aDirection.AssignLiteral("none");
} else if (dir == nsITextControlFrame::eForward) {
aDirection.AssignLiteral("forward");
} else if (dir == nsITextControlFrame::eBackward) {
aDirection.AssignLiteral("backward");
} else {
NS_NOTREACHED("Invalid SelectionDirection value");
}
}
nsresult
HTMLTextAreaElement::GetSelectionDirection(nsAString& aDirection)
{
ErrorResult error;
GetSelectionDirection(aDirection, error);
return error.StealNSResult();
}
void
HTMLTextAreaElement::GetSelectionDirection(nsAString& aDirection, ErrorResult& aError)
{
nsresult rv = NS_ERROR_FAILURE;
nsIFormControlFrame* formControlFrame = GetFormControlFrame(true);
nsITextControlFrame* textControlFrame = do_QueryFrame(formControlFrame);
if (textControlFrame) {
nsITextControlFrame::SelectionDirection dir;
rv = textControlFrame->GetSelectionRange(nullptr, nullptr, &dir);
if (NS_SUCCEEDED(rv)) {
DirectionToName(dir, aDirection);
}
}
if (NS_FAILED(rv)) {
if (mState.IsSelectionCached()) {
DirectionToName(mState.GetSelectionProperties().mDirection, aDirection);
return;
}
aError.Throw(rv);
}
}
NS_IMETHODIMP
HTMLTextAreaElement::SetSelectionDirection(const nsAString& aDirection)
{
ErrorResult error;
SetSelectionDirection(aDirection, error);
return error.StealNSResult();
}
void
HTMLTextAreaElement::SetSelectionDirection(const nsAString& aDirection, ErrorResult& aError)
{
if (mState.IsSelectionCached()) {
nsITextControlFrame::SelectionDirection dir = nsITextControlFrame::eNone;
if (aDirection.EqualsLiteral("forward")) {
dir = nsITextControlFrame::eForward;
} else if (aDirection.EqualsLiteral("backward")) {
dir = nsITextControlFrame::eBackward;
}
mState.GetSelectionProperties().mDirection = dir;
return;
}
int32_t start, end;
nsresult rv = GetSelectionRange(&start, &end);
if (NS_SUCCEEDED(rv)) {
rv = SetSelectionRange(start, end, aDirection);
}
if (NS_FAILED(rv)) {
aError.Throw(rv);
}
}
NS_IMETHODIMP
HTMLTextAreaElement::SetSelectionRange(int32_t aSelectionStart,
int32_t aSelectionEnd,
const nsAString& aDirection)
{
ErrorResult error;
Optional<nsAString> dir;
dir = &aDirection;
SetSelectionRange(aSelectionStart, aSelectionEnd, dir, error);
return error.StealNSResult();
}
void
HTMLTextAreaElement::SetSelectionRange(uint32_t aSelectionStart,
uint32_t aSelectionEnd,
const Optional<nsAString>& aDirection,
ErrorResult& aError)
{
nsresult rv = NS_ERROR_FAILURE;
nsIFormControlFrame* formControlFrame = GetFormControlFrame(true);
nsITextControlFrame* textControlFrame = do_QueryFrame(formControlFrame);
if (textControlFrame) {
// Default to forward, even if not specified.
// Note that we don't currently support directionless selections, so
// "none" is treated like "forward".
nsITextControlFrame::SelectionDirection dir = nsITextControlFrame::eForward;
if (aDirection.WasPassed() && aDirection.Value().EqualsLiteral("backward")) {
dir = nsITextControlFrame::eBackward;
}
rv = textControlFrame->SetSelectionRange(aSelectionStart, aSelectionEnd, dir);
if (NS_SUCCEEDED(rv)) {
rv = textControlFrame->ScrollSelectionIntoView();
RefPtr<AsyncEventDispatcher> asyncDispatcher =
new AsyncEventDispatcher(this, NS_LITERAL_STRING("select"),
true, false);
asyncDispatcher->PostDOMEvent();
}
}
if (NS_FAILED(rv)) {
aError.Throw(rv);
}
}
void
HTMLTextAreaElement::SetRangeText(const nsAString& aReplacement,
ErrorResult& aRv)
{
int32_t start, end;
aRv = GetSelectionRange(&start, &end);
if (aRv.Failed()) {
if (mState.IsSelectionCached()) {
start = mState.GetSelectionProperties().mStart;
end = mState.GetSelectionProperties().mEnd;
aRv = NS_OK;
}
}
SetRangeText(aReplacement, start, end, mozilla::dom::SelectionMode::Preserve,
aRv, start, end);
}
void
HTMLTextAreaElement::SetRangeText(const nsAString& aReplacement,
uint32_t aStart, uint32_t aEnd,
const SelectionMode& aSelectMode,
ErrorResult& aRv, int32_t aSelectionStart,
int32_t aSelectionEnd)
{
if (aStart > aEnd) {
aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
return;
}
nsAutoString value;
GetValueInternal(value, false);
uint32_t inputValueLength = value.Length();
if (aStart > inputValueLength) {
aStart = inputValueLength;
}
if (aEnd > inputValueLength) {
aEnd = inputValueLength;
}
if (aSelectionStart == -1 && aSelectionEnd == -1) {
aRv = GetSelectionRange(&aSelectionStart, &aSelectionEnd);
if (aRv.Failed()) {
if (mState.IsSelectionCached()) {
aSelectionStart = mState.GetSelectionProperties().mStart;
aSelectionEnd = mState.GetSelectionProperties().mEnd;
aRv = NS_OK;
}
}
}
if (aStart <= aEnd) {
value.Replace(aStart, aEnd - aStart, aReplacement);
nsresult rv =
SetValueInternal(value, nsTextEditorState::eSetValue_ByContent);
if (NS_FAILED(rv)) {
aRv.Throw(rv);
return;
}
}
uint32_t newEnd = aStart + aReplacement.Length();
int32_t delta = aReplacement.Length() - (aEnd - aStart);
switch (aSelectMode) {
case mozilla::dom::SelectionMode::Select:
{
aSelectionStart = aStart;
aSelectionEnd = newEnd;
}
break;
case mozilla::dom::SelectionMode::Start:
{
aSelectionStart = aSelectionEnd = aStart;
}
break;
case mozilla::dom::SelectionMode::End:
{
aSelectionStart = aSelectionEnd = newEnd;
}
break;
case mozilla::dom::SelectionMode::Preserve:
{
if ((uint32_t)aSelectionStart > aEnd) {
aSelectionStart += delta;
} else if ((uint32_t)aSelectionStart > aStart) {
aSelectionStart = aStart;
}
if ((uint32_t)aSelectionEnd > aEnd) {
aSelectionEnd += delta;
} else if ((uint32_t)aSelectionEnd > aStart) {
aSelectionEnd = newEnd;
}
}
break;
default:
MOZ_CRASH("Unknown mode!");
}
Optional<nsAString> direction;
SetSelectionRange(aSelectionStart, aSelectionEnd, direction, aRv);
}
nsresult
HTMLTextAreaElement::Reset()
{
nsresult rv;
// To get the initial spellchecking, reset value to
// empty string before setting the default value.
rv = SetValue(EmptyString());
NS_ENSURE_SUCCESS(rv, rv);
nsAutoString resetVal;
GetDefaultValue(resetVal);
rv = SetValue(resetVal);
NS_ENSURE_SUCCESS(rv, rv);
SetValueChanged(false);
return NS_OK;
}
NS_IMETHODIMP
HTMLTextAreaElement::SubmitNamesValues(HTMLFormSubmission* aFormSubmission)
{
// Disabled elements don't submit
if (IsDisabled()) {
return NS_OK;
}
//
// Get the name (if no name, no submit)
//
nsAutoString name;
GetAttr(kNameSpaceID_None, nsGkAtoms::name, name);
if (name.IsEmpty()) {
return NS_OK;
}
//
// Get the value
//
nsAutoString value;
GetValueInternal(value, false);
//
// Submit
//
return aFormSubmission->AddNameValuePair(name, value);
}
NS_IMETHODIMP
HTMLTextAreaElement::SaveState()
{
nsresult rv = NS_OK;
// Only save if value != defaultValue (bug 62713)
nsPresState *state = nullptr;
if (mValueChanged) {
state = GetPrimaryPresState();
if (state) {
nsAutoString value;
GetValueInternal(value, true);
rv = nsLinebreakConverter::ConvertStringLineBreaks(
value,
nsLinebreakConverter::eLinebreakPlatform,
nsLinebreakConverter::eLinebreakContent);
if (NS_FAILED(rv)) {
NS_ERROR("Converting linebreaks failed!");
return rv;
}
nsCOMPtr<nsISupportsString> pState =
do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID);
if (!pState) {
return NS_ERROR_OUT_OF_MEMORY;
}
pState->SetData(value);
state->SetStateProperty(pState);
}
}
if (mDisabledChanged) {
if (!state) {
state = GetPrimaryPresState();
rv = NS_OK;
}
if (state) {
// We do not want to save the real disabled state but the disabled
// attribute.
state->SetDisabled(HasAttr(kNameSpaceID_None, nsGkAtoms::disabled));
}
}
return rv;
}
bool
HTMLTextAreaElement::RestoreState(nsPresState* aState)
{
nsCOMPtr<nsISupportsString> state
(do_QueryInterface(aState->GetStateProperty()));
if (state) {
nsAutoString data;
state->GetData(data);
nsresult rv = SetValue(data);
NS_ENSURE_SUCCESS(rv, false);
}
if (aState->IsDisabledSet()) {
SetDisabled(aState->GetDisabled());
}
return false;
}
EventStates
HTMLTextAreaElement::IntrinsicState() const
{
EventStates state = nsGenericHTMLFormElementWithState::IntrinsicState();
if (HasAttr(kNameSpaceID_None, nsGkAtoms::required)) {
state |= NS_EVENT_STATE_REQUIRED;
} else {
state |= NS_EVENT_STATE_OPTIONAL;
}
if (IsCandidateForConstraintValidation()) {
if (IsValid()) {
state |= NS_EVENT_STATE_VALID;
} else {
state |= NS_EVENT_STATE_INVALID;
// :-moz-ui-invalid always apply if the element suffers from a custom
// error and never applies if novalidate is set on the form owner.
if ((!mForm || !mForm->HasAttr(kNameSpaceID_None, nsGkAtoms::novalidate)) &&
(GetValidityState(VALIDITY_STATE_CUSTOM_ERROR) ||
(mCanShowInvalidUI && ShouldShowValidityUI()))) {
state |= NS_EVENT_STATE_MOZ_UI_INVALID;
}
}
// :-moz-ui-valid applies if all the following are true:
// 1. The element is not focused, or had either :-moz-ui-valid or
// :-moz-ui-invalid applying before it was focused ;
// 2. The element is either valid or isn't allowed to have
// :-moz-ui-invalid applying ;
// 3. The element has no form owner or its form owner doesn't have the
// novalidate attribute set ;
// 4. The element has already been modified or the user tried to submit the
// form owner while invalid.
if ((!mForm || !mForm->HasAttr(kNameSpaceID_None, nsGkAtoms::novalidate)) &&
(mCanShowValidUI && ShouldShowValidityUI() &&
(IsValid() || (state.HasState(NS_EVENT_STATE_MOZ_UI_INVALID) &&
!mCanShowInvalidUI)))) {
state |= NS_EVENT_STATE_MOZ_UI_VALID;
}
}
return state;
}
nsresult
HTMLTextAreaElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
nsIContent* aBindingParent,
bool aCompileEventHandlers)
{
nsresult rv = nsGenericHTMLFormElementWithState::BindToTree(aDocument, aParent,
aBindingParent,
aCompileEventHandlers);
NS_ENSURE_SUCCESS(rv, rv);
// If there is a disabled fieldset in the parent chain, the element is now
// barred from constraint validation and can't suffer from value missing.
UpdateValueMissingValidityState();
UpdateBarredFromConstraintValidation();
// And now make sure our state is up to date
UpdateState(false);
return rv;
}
void
HTMLTextAreaElement::UnbindFromTree(bool aDeep, bool aNullParent)
{
nsGenericHTMLFormElementWithState::UnbindFromTree(aDeep, aNullParent);
// We might be no longer disabled because of parent chain changed.
UpdateValueMissingValidityState();
UpdateBarredFromConstraintValidation();
// And now make sure our state is up to date
UpdateState(false);
}
nsresult
HTMLTextAreaElement::BeforeSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
nsAttrValueOrString* aValue,
bool aNotify)
{
if (aNotify && aName == nsGkAtoms::disabled &&
aNameSpaceID == kNameSpaceID_None) {
mDisabledChanged = true;
}
return nsGenericHTMLFormElementWithState::BeforeSetAttr(aNameSpaceID, aName,
aValue, aNotify);
}
void
HTMLTextAreaElement::CharacterDataChanged(nsIDocument* aDocument,
nsIContent* aContent,
CharacterDataChangeInfo* aInfo)
{
ContentChanged(aContent);
}
void
HTMLTextAreaElement::ContentAppended(nsIDocument* aDocument,
nsIContent* aContainer,
nsIContent* aFirstNewContent,
int32_t /* unused */)
{
ContentChanged(aFirstNewContent);
}
void
HTMLTextAreaElement::ContentInserted(nsIDocument* aDocument,
nsIContent* aContainer,
nsIContent* aChild,
int32_t /* unused */)
{
ContentChanged(aChild);
}
void
HTMLTextAreaElement::ContentRemoved(nsIDocument* aDocument,
nsIContent* aContainer,
nsIContent* aChild,
int32_t aIndexInContainer,
nsIContent* aPreviousSibling)
{
ContentChanged(aChild);
}
void
HTMLTextAreaElement::ContentChanged(nsIContent* aContent)
{
if (!mValueChanged && mDoneAddingChildren &&
nsContentUtils::IsInSameAnonymousTree(this, aContent)) {
// Hard to say what the reset can trigger, so be safe pending
// further auditing.
nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
Reset();
}
}
nsresult
HTMLTextAreaElement::AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
const nsAttrValue* aValue, bool aNotify)
{
if (aNameSpaceID == kNameSpaceID_None) {
if (aName == nsGkAtoms::required || aName == nsGkAtoms::disabled ||
aName == nsGkAtoms::readonly) {
UpdateValueMissingValidityState();
// This *has* to be called *after* validity has changed.
if (aName == nsGkAtoms::readonly || aName == nsGkAtoms::disabled) {
UpdateBarredFromConstraintValidation();
}
} else if (aName == nsGkAtoms::maxlength) {
UpdateTooLongValidityState();
}
UpdateState(aNotify);
}
return nsGenericHTMLFormElementWithState::AfterSetAttr(aNameSpaceID, aName, aValue,
aNotify);
}
nsresult
HTMLTextAreaElement::CopyInnerTo(Element* aDest)
{
nsresult rv = nsGenericHTMLFormElementWithState::CopyInnerTo(aDest);
NS_ENSURE_SUCCESS(rv, rv);
if (aDest->OwnerDoc()->IsStaticDocument()) {
nsAutoString value;
GetValueInternal(value, true);
return static_cast<HTMLTextAreaElement*>(aDest)->SetValue(value);
}
return NS_OK;
}
bool
HTMLTextAreaElement::IsMutable() const
{
return (!HasAttr(kNameSpaceID_None, nsGkAtoms::readonly) && !IsDisabled());
}
bool
HTMLTextAreaElement::IsValueEmpty() const
{
nsAutoString value;
GetValueInternal(value, true);
return value.IsEmpty();
}
// nsIConstraintValidation
NS_IMETHODIMP
HTMLTextAreaElement::SetCustomValidity(const nsAString& aError)
{
nsIConstraintValidation::SetCustomValidity(aError);
UpdateState(true);
return NS_OK;
}
bool
HTMLTextAreaElement::IsTooLong()
{
if (!HasAttr(kNameSpaceID_None, nsGkAtoms::maxlength) || !mValueChanged) {
return false;
}
int32_t maxLength = -1;
GetMaxLength(&maxLength);
// Maxlength of -1 means parsing error.
if (maxLength == -1) {
return false;
}
int32_t textLength = -1;
GetTextLength(&textLength);
return textLength > maxLength;
}
bool
HTMLTextAreaElement::IsValueMissing() const
{
if (!HasAttr(kNameSpaceID_None, nsGkAtoms::required) || !IsMutable()) {
return false;
}
return IsValueEmpty();
}
void
HTMLTextAreaElement::UpdateTooLongValidityState()
{
// TODO: this code will be re-enabled with bug 613016 and bug 613019.
#if 0
SetValidityState(VALIDITY_STATE_TOO_LONG, IsTooLong());
#endif
}
void
HTMLTextAreaElement::UpdateValueMissingValidityState()
{
SetValidityState(VALIDITY_STATE_VALUE_MISSING, IsValueMissing());
}
void
HTMLTextAreaElement::UpdateBarredFromConstraintValidation()
{
SetBarredFromConstraintValidation(HasAttr(kNameSpaceID_None,
nsGkAtoms::readonly) ||
IsDisabled());
}
nsresult
HTMLTextAreaElement::GetValidationMessage(nsAString& aValidationMessage,
ValidityStateType aType)
{
nsresult rv = NS_OK;
switch (aType)
{
case VALIDITY_STATE_TOO_LONG:
{
nsXPIDLString message;
int32_t maxLength = -1;
int32_t textLength = -1;
nsAutoString strMaxLength;
nsAutoString strTextLength;
GetMaxLength(&maxLength);
GetTextLength(&textLength);
strMaxLength.AppendInt(maxLength);
strTextLength.AppendInt(textLength);
const char16_t* params[] = { strMaxLength.get(), strTextLength.get() };
rv = nsContentUtils::FormatLocalizedString(nsContentUtils::eDOM_PROPERTIES,
"FormValidationTextTooLong",
params, message);
aValidationMessage = message;
}
break;
case VALIDITY_STATE_VALUE_MISSING:
{
nsXPIDLString message;
rv = nsContentUtils::GetLocalizedString(nsContentUtils::eDOM_PROPERTIES,
"FormValidationValueMissing",
message);
aValidationMessage = message;
}
break;
default:
rv = nsIConstraintValidation::GetValidationMessage(aValidationMessage, aType);
}
return rv;
}
NS_IMETHODIMP_(bool)
HTMLTextAreaElement::IsSingleLineTextControl() const
{
return false;
}
NS_IMETHODIMP_(bool)
HTMLTextAreaElement::IsTextArea() const
{
return true;
}
NS_IMETHODIMP_(bool)
HTMLTextAreaElement::IsPlainTextControl() const
{
// need to check our HTML attribute and/or CSS.
return true;
}
NS_IMETHODIMP_(bool)
HTMLTextAreaElement::IsPasswordTextControl() const
{
return false;
}
NS_IMETHODIMP_(int32_t)
HTMLTextAreaElement::GetCols()
{
return Cols();
}
NS_IMETHODIMP_(int32_t)
HTMLTextAreaElement::GetWrapCols()
{
// wrap=off means -1 for wrap width no matter what cols is
nsHTMLTextWrap wrapProp;
nsITextControlElement::GetWrapPropertyEnum(this, wrapProp);
if (wrapProp == nsITextControlElement::eHTMLTextWrap_Off) {
// do not wrap when wrap=off
return 0;
}
// Otherwise we just wrap at the given number of columns
return GetCols();
}
NS_IMETHODIMP_(int32_t)
HTMLTextAreaElement::GetRows()
{
const nsAttrValue* attr = GetParsedAttr(nsGkAtoms::rows);
if (attr && attr->Type() == nsAttrValue::eInteger) {
int32_t rows = attr->GetIntegerValue();
return (rows <= 0) ? DEFAULT_ROWS_TEXTAREA : rows;
}
return DEFAULT_ROWS_TEXTAREA;
}
NS_IMETHODIMP_(void)
HTMLTextAreaElement::GetDefaultValueFromContent(nsAString& aValue)
{
GetDefaultValue(aValue);
}
NS_IMETHODIMP_(bool)
HTMLTextAreaElement::ValueChanged() const
{
return mValueChanged;
}
NS_IMETHODIMP_(void)
HTMLTextAreaElement::GetTextEditorValue(nsAString& aValue,
bool aIgnoreWrap) const
{
mState.GetValue(aValue, aIgnoreWrap);
}
NS_IMETHODIMP_(void)
HTMLTextAreaElement::InitializeKeyboardEventListeners()
{
mState.InitializeKeyboardEventListeners();
}
NS_IMETHODIMP_(void)
HTMLTextAreaElement::OnValueChanged(bool aNotify)
{
// Update the validity state
bool validBefore = IsValid();
UpdateTooLongValidityState();
UpdateValueMissingValidityState();
if (validBefore != IsValid()) {
UpdateState(aNotify);
}
}
NS_IMETHODIMP_(bool)
HTMLTextAreaElement::HasCachedSelection()
{
return mState.IsSelectionCached();
}
void
HTMLTextAreaElement::FieldSetDisabledChanged(bool aNotify)
{
UpdateValueMissingValidityState();
UpdateBarredFromConstraintValidation();
nsGenericHTMLFormElementWithState::FieldSetDisabledChanged(aNotify);
}
JSObject*
HTMLTextAreaElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return HTMLTextAreaElementBinding::Wrap(aCx, this, aGivenProto);
}
} // namespace dom
} // namespace mozilla
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