Add m-esr52 at 52.6.0

1 files changed, 519 insertions, 0 deletions

diff --git a/dom/html/HTMLButtonElement.cpp b/dom/html/HTMLButtonElement.cpp
new file mode 100644
index 000000000..435aa9f7f
--- /dev/null
+++ b/dom/html/HTMLButtonElement.cpp
@@ -0,0 +1,519 @@
+/* -*- 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/HTMLButtonElement.h"
+
+#include "HTMLFormSubmissionConstants.h"
+#include "mozilla/dom/HTMLButtonElementBinding.h"
+#include "mozilla/dom/HTMLFormSubmission.h"
+#include "nsIDOMHTMLFormElement.h"
+#include "nsAttrValueInlines.h"
+#include "nsGkAtoms.h"
+#include "nsIPresShell.h"
+#include "nsStyleConsts.h"
+#include "nsPresContext.h"
+#include "nsIFormControl.h"
+#include "nsIURL.h"
+#include "nsIFrame.h"
+#include "nsIFormControlFrame.h"
+#include "nsIDOMEvent.h"
+#include "nsIDocument.h"
+#include "mozilla/ContentEvents.h"
+#include "mozilla/EventDispatcher.h"
+#include "mozilla/EventStateManager.h"
+#include "mozilla/EventStates.h"
+#include "mozilla/MouseEvents.h"
+#include "mozilla/TextEvents.h"
+#include "nsUnicharUtils.h"
+#include "nsLayoutUtils.h"
+#include "nsPresState.h"
+#include "nsError.h"
+#include "nsFocusManager.h"
+#include "mozilla/dom/HTMLFormElement.h"
+#include "mozAutoDocUpdate.h"
+
+#define NS_IN_SUBMIT_CLICK      (1 << 0)
+#define NS_OUTER_ACTIVATE_EVENT (1 << 1)
+
+NS_IMPL_NS_NEW_HTML_ELEMENT_CHECK_PARSER(Button)
+
+namespace mozilla {
+namespace dom {
+
+static const nsAttrValue::EnumTable kButtonTypeTable[] = {
+  { "button", NS_FORM_BUTTON_BUTTON },
+  { "reset", NS_FORM_BUTTON_RESET },
+  { "submit", NS_FORM_BUTTON_SUBMIT },
+  { nullptr, 0 }
+};
+
+// Default type is 'submit'.
+static const nsAttrValue::EnumTable* kButtonDefaultType = &kButtonTypeTable[2];
+
+
+// Construction, destruction
+HTMLButtonElement::HTMLButtonElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo,
+                                     FromParser aFromParser)
+  : nsGenericHTMLFormElementWithState(aNodeInfo),
+    mType(kButtonDefaultType->value),
+    mDisabledChanged(false),
+    mInInternalActivate(false),
+    mInhibitStateRestoration(!!(aFromParser & FROM_PARSER_FRAGMENT))
+{
+  // Set up our default state: enabled
+  AddStatesSilently(NS_EVENT_STATE_ENABLED);
+}
+
+HTMLButtonElement::~HTMLButtonElement()
+{
+}
+
+// nsISupports
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(HTMLButtonElement,
+                                   nsGenericHTMLFormElementWithState,
+                                   mValidity)
+
+NS_IMPL_ADDREF_INHERITED(HTMLButtonElement, Element)
+NS_IMPL_RELEASE_INHERITED(HTMLButtonElement, Element)
+
+
+// QueryInterface implementation for HTMLButtonElement
+NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(HTMLButtonElement)
+  NS_INTERFACE_TABLE_INHERITED(HTMLButtonElement,
+                               nsIDOMHTMLButtonElement,
+                               nsIConstraintValidation)
+NS_INTERFACE_TABLE_TAIL_INHERITING(nsGenericHTMLFormElementWithState)
+
+// nsIConstraintValidation
+NS_IMPL_NSICONSTRAINTVALIDATION_EXCEPT_SETCUSTOMVALIDITY(HTMLButtonElement)
+
+NS_IMETHODIMP
+HTMLButtonElement::SetCustomValidity(const nsAString& aError) 
+{
+  nsIConstraintValidation::SetCustomValidity(aError);
+  
+  UpdateState(true);
+
+  return NS_OK;
+}
+
+void
+HTMLButtonElement::UpdateBarredFromConstraintValidation()
+{
+  SetBarredFromConstraintValidation(mType == NS_FORM_BUTTON_BUTTON ||
+                                    mType == NS_FORM_BUTTON_RESET ||
+                                    IsDisabled());
+}
+
+void
+HTMLButtonElement::FieldSetDisabledChanged(bool aNotify)
+{
+  UpdateBarredFromConstraintValidation();
+
+  nsGenericHTMLFormElementWithState::FieldSetDisabledChanged(aNotify);
+}
+
+// nsIDOMHTMLButtonElement
+
+NS_IMPL_ELEMENT_CLONE(HTMLButtonElement)
+
+
+// nsIDOMHTMLButtonElement
+
+NS_IMETHODIMP
+HTMLButtonElement::GetForm(nsIDOMHTMLFormElement** aForm)
+{
+  return nsGenericHTMLFormElementWithState::GetForm(aForm);
+}
+
+NS_IMPL_BOOL_ATTR(HTMLButtonElement, Autofocus, autofocus)
+NS_IMPL_BOOL_ATTR(HTMLButtonElement, Disabled, disabled)
+NS_IMPL_ACTION_ATTR(HTMLButtonElement, FormAction, formaction)
+NS_IMPL_ENUM_ATTR_DEFAULT_MISSING_INVALID_VALUES(HTMLButtonElement, FormEnctype, formenctype,
+                                                 "", kFormDefaultEnctype->tag)
+NS_IMPL_ENUM_ATTR_DEFAULT_MISSING_INVALID_VALUES(HTMLButtonElement, FormMethod, formmethod,
+                                                 "", kFormDefaultMethod->tag)
+NS_IMPL_BOOL_ATTR(HTMLButtonElement, FormNoValidate, formnovalidate)
+NS_IMPL_STRING_ATTR(HTMLButtonElement, FormTarget, formtarget)
+NS_IMPL_STRING_ATTR(HTMLButtonElement, Name, name)
+NS_IMPL_STRING_ATTR(HTMLButtonElement, Value, value)
+NS_IMPL_ENUM_ATTR_DEFAULT_VALUE(HTMLButtonElement, Type, type,
+                                kButtonDefaultType->tag)
+
+int32_t
+HTMLButtonElement::TabIndexDefault()
+{
+  return 0;
+}
+
+bool
+HTMLButtonElement::IsHTMLFocusable(bool aWithMouse, bool *aIsFocusable, int32_t *aTabIndex)
+{
+  if (nsGenericHTMLFormElementWithState::IsHTMLFocusable(aWithMouse, aIsFocusable, aTabIndex)) {
+    return true;
+  }
+
+  *aIsFocusable = 
+#ifdef XP_MACOSX
+    (!aWithMouse || nsFocusManager::sMouseFocusesFormControl) &&
+#endif
+    !IsDisabled();
+
+  return false;
+}
+
+bool
+HTMLButtonElement::ParseAttribute(int32_t aNamespaceID,
+                                  nsIAtom* aAttribute,
+                                  const nsAString& aValue,
+                                  nsAttrValue& aResult)
+{
+  if (aNamespaceID == kNameSpaceID_None) {
+    if (aAttribute == nsGkAtoms::type) {
+      // XXX ARG!! This is major evilness. ParseAttribute
+      // shouldn't set members. Override SetAttr instead
+      bool success = aResult.ParseEnumValue(aValue, kButtonTypeTable, false);
+      if (success) {
+        mType = aResult.GetEnumValue();
+      } else {
+        mType = kButtonDefaultType->value;
+      }
+
+      return success;
+    }
+
+    if (aAttribute == nsGkAtoms::formmethod) {
+      return aResult.ParseEnumValue(aValue, kFormMethodTable, false);
+    }
+    if (aAttribute == nsGkAtoms::formenctype) {
+      return aResult.ParseEnumValue(aValue, kFormEnctypeTable, false);
+    }
+  }
+
+  return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
+                                              aResult);
+}
+
+bool
+HTMLButtonElement::IsDisabledForEvents(EventMessage aMessage)
+{
+  nsIFormControlFrame* formControlFrame = GetFormControlFrame(false);
+  nsIFrame* formFrame = do_QueryFrame(formControlFrame);
+  return IsElementDisabledForEvents(aMessage, formFrame);
+}
+
+nsresult
+HTMLButtonElement::PreHandleEvent(EventChainPreVisitor& aVisitor)
+{
+  aVisitor.mCanHandle = false;
+  if (IsDisabledForEvents(aVisitor.mEvent->mMessage)) {
+    return NS_OK;
+  }
+
+  // Track whether we're in the outermost Dispatch invocation that will
+  // cause activation of the input.  That is, if we're a click event, or a
+  // DOMActivate that was dispatched directly, this will be set, but if we're
+  // a DOMActivate dispatched from click handling, it will not be set.
+  WidgetMouseEvent* mouseEvent = aVisitor.mEvent->AsMouseEvent();
+  bool outerActivateEvent =
+    ((mouseEvent && mouseEvent->IsLeftClickEvent()) ||
+     (aVisitor.mEvent->mMessage == eLegacyDOMActivate &&
+      !mInInternalActivate));
+
+  if (outerActivateEvent) {
+    aVisitor.mItemFlags |= NS_OUTER_ACTIVATE_EVENT;
+    if (mType == NS_FORM_BUTTON_SUBMIT && mForm) {
+      aVisitor.mItemFlags |= NS_IN_SUBMIT_CLICK;
+      // tell the form that we are about to enter a click handler.
+      // that means that if there are scripted submissions, the
+      // latest one will be deferred until after the exit point of the handler.
+      mForm->OnSubmitClickBegin(this);
+    }
+  }
+
+  return nsGenericHTMLElement::PreHandleEvent(aVisitor);
+}
+
+nsresult
+HTMLButtonElement::PostHandleEvent(EventChainPostVisitor& aVisitor)
+{
+  nsresult rv = NS_OK;
+  if (!aVisitor.mPresContext) {
+    return rv;
+  }
+
+  if (aVisitor.mEventStatus != nsEventStatus_eConsumeNoDefault) {
+    WidgetMouseEvent* mouseEvent = aVisitor.mEvent->AsMouseEvent();
+    if (mouseEvent && mouseEvent->IsLeftClickEvent()) {
+      // DOMActive event should be trusted since the activation is actually
+      // occurred even if the cause is an untrusted click event.
+      InternalUIEvent actEvent(true, eLegacyDOMActivate, mouseEvent);
+      actEvent.mDetail = 1;
+
+      nsCOMPtr<nsIPresShell> shell = aVisitor.mPresContext->GetPresShell();
+      if (shell) {
+        nsEventStatus status = nsEventStatus_eIgnore;
+        mInInternalActivate = true;
+        shell->HandleDOMEventWithTarget(this, &actEvent, &status);
+        mInInternalActivate = false;
+
+        // If activate is cancelled, we must do the same as when click is
+        // cancelled (revert the checkbox to its original value).
+        if (status == nsEventStatus_eConsumeNoDefault) {
+          aVisitor.mEventStatus = status;
+        }
+      }
+    }
+  }
+
+  // mForm is null if the event handler removed us from the document (bug 194582).
+  if ((aVisitor.mItemFlags & NS_IN_SUBMIT_CLICK) && mForm) {
+    // tell the form that we are about to exit a click handler
+    // so the form knows not to defer subsequent submissions
+    // the pending ones that were created during the handler
+    // will be flushed or forgoten.
+    mForm->OnSubmitClickEnd();
+  }
+
+  if (nsEventStatus_eIgnore == aVisitor.mEventStatus) {
+    switch (aVisitor.mEvent->mMessage) {
+      case eKeyPress:
+      case eKeyUp:
+        {
+          // For backwards compat, trigger buttons with space or enter
+          // (bug 25300)
+          WidgetKeyboardEvent* keyEvent = aVisitor.mEvent->AsKeyboardEvent();
+          if ((keyEvent->mKeyCode == NS_VK_RETURN &&
+               eKeyPress == aVisitor.mEvent->mMessage) ||
+              (keyEvent->mKeyCode == NS_VK_SPACE &&
+               eKeyUp == aVisitor.mEvent->mMessage)) {
+            DispatchSimulatedClick(this, aVisitor.mEvent->IsTrusted(),
+                                   aVisitor.mPresContext);
+            aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
+          }
+        }
+        break;
+
+      default:
+        break;
+    }
+    if (aVisitor.mItemFlags & NS_OUTER_ACTIVATE_EVENT) {
+      if (mForm && (mType == NS_FORM_BUTTON_SUBMIT ||
+                    mType == NS_FORM_BUTTON_RESET)) {
+        InternalFormEvent event(true,
+          (mType == NS_FORM_BUTTON_RESET) ? eFormReset : eFormSubmit);
+        event.mOriginator = this;
+        nsEventStatus status = nsEventStatus_eIgnore;
+
+        nsCOMPtr<nsIPresShell> presShell =
+          aVisitor.mPresContext->GetPresShell();
+        // If |nsIPresShell::Destroy| has been called due to
+        // handling the event, the pres context will return
+        // a null pres shell.  See bug 125624.
+        //
+        // Using presShell to dispatch the event. It makes sure that
+        // event is not handled if the window is being destroyed.
+        if (presShell && (event.mMessage != eFormSubmit ||
+                          mForm->SubmissionCanProceed(this))) {
+          // TODO: removing this code and have the submit event sent by the form
+          // see bug 592124.
+          // Hold a strong ref while dispatching
+          RefPtr<HTMLFormElement> form(mForm);
+          presShell->HandleDOMEventWithTarget(form, &event, &status);
+          aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
+        }
+      }
+    }
+  } else if ((aVisitor.mItemFlags & NS_IN_SUBMIT_CLICK) && mForm) {
+    // Tell the form to flush a possible pending submission.
+    // the reason is that the script returned false (the event was
+    // not ignored) so if there is a stored submission, it needs to
+    // be submitted immediatelly.
+    // Note, NS_IN_SUBMIT_CLICK is set only when we're in outer activate event.
+    mForm->FlushPendingSubmission();
+  } //if
+
+  return rv;
+}
+
+nsresult
+HTMLButtonElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
+                              nsIContent* aBindingParent,
+                              bool aCompileEventHandlers)
+{
+  nsresult rv =
+    nsGenericHTMLFormElementWithState::BindToTree(aDocument, aParent, aBindingParent,
+                                                  aCompileEventHandlers);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Update our state; we may now be the default submit element
+  UpdateState(false);
+
+  return NS_OK;
+}
+
+void
+HTMLButtonElement::UnbindFromTree(bool aDeep, bool aNullParent)
+{
+  nsGenericHTMLFormElementWithState::UnbindFromTree(aDeep, aNullParent);
+
+  // Update our state; we may no longer be the default submit element
+  UpdateState(false);
+}
+
+NS_IMETHODIMP
+HTMLButtonElement::Reset()
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HTMLButtonElement::SubmitNamesValues(HTMLFormSubmission* aFormSubmission)
+{
+  //
+  // We only submit if we were the button pressed
+  //
+  if (aFormSubmission->GetOriginatingElement() != this) {
+    return NS_OK;
+  }
+
+  // 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;
+  nsresult rv = GetValue(value);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  //
+  // Submit
+  //
+  return aFormSubmission->AddNameValuePair(name, value);
+}
+
+void
+HTMLButtonElement::DoneCreatingElement()
+{
+  if (!mInhibitStateRestoration) {
+    nsresult rv = GenerateStateKey();
+    if (NS_SUCCEEDED(rv)) {
+      RestoreFormControlState();
+    }
+  }
+}
+
+nsresult
+HTMLButtonElement::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);
+}
+
+nsresult
+HTMLButtonElement::AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
+                                const nsAttrValue* aValue, bool aNotify)
+{
+  if (aNameSpaceID == kNameSpaceID_None) {
+    if (aName == nsGkAtoms::type) {
+      if (!aValue) {
+        mType = kButtonDefaultType->value;
+      }
+    }
+
+    if (aName == nsGkAtoms::type || aName == nsGkAtoms::disabled) {
+      UpdateBarredFromConstraintValidation();
+      UpdateState(aNotify); 
+    }
+  }
+
+  return nsGenericHTMLFormElementWithState::AfterSetAttr(aNameSpaceID, aName,
+                                                         aValue, aNotify);
+}
+
+NS_IMETHODIMP
+HTMLButtonElement::SaveState()
+{
+  if (!mDisabledChanged) {
+    return NS_OK;
+  }
+  
+  nsPresState* state = GetPrimaryPresState();
+  if (state) {
+    // We do not want to save the real disabled state but the disabled
+    // attribute.
+    state->SetDisabled(HasAttr(kNameSpaceID_None, nsGkAtoms::disabled));
+  }
+
+  return NS_OK;
+}
+
+bool
+HTMLButtonElement::RestoreState(nsPresState* aState)
+{
+  if (aState && aState->IsDisabledSet()) {
+    SetDisabled(aState->GetDisabled());
+  }
+
+  return false;
+}
+
+EventStates
+HTMLButtonElement::IntrinsicState() const
+{
+  EventStates state = nsGenericHTMLFormElementWithState::IntrinsicState();
+  
+  if (IsCandidateForConstraintValidation()) {
+    if (IsValid()) {
+      state |= NS_EVENT_STATE_VALID;
+      if (!mForm || !mForm->HasAttr(kNameSpaceID_None, nsGkAtoms::novalidate)) {
+        state |= NS_EVENT_STATE_MOZ_UI_VALID;
+      }
+    } else {
+      state |= NS_EVENT_STATE_INVALID;
+      if (!mForm || !mForm->HasAttr(kNameSpaceID_None, nsGkAtoms::novalidate)) {
+        state |= NS_EVENT_STATE_MOZ_UI_INVALID;
+      }
+    }
+  }
+
+  if (mForm && !mForm->GetValidity() && IsSubmitControl()) {
+    state |= NS_EVENT_STATE_MOZ_SUBMITINVALID;
+  }
+
+  return state;
+}
+
+JSObject*
+HTMLButtonElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
+{
+  return HTMLButtonElementBinding::Wrap(aCx, this, aGivenProto);
+}
+
+} // namespace dom
+} // namespace mozilla