1 files changed, 458 insertions, 0 deletions
diff --git a/dom/html/HTMLOptionElement.cpp b/dom/html/HTMLOptionElement.cpp
new file mode 100644
index 000000000..7b1e3ca2d
--- /dev/null
+++ b/dom/html/HTMLOptionElement.cpp
@@ -0,0 +1,458 @@
+/* -*- 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/HTMLOptionElement.h"
+#include "mozilla/dom/HTMLOptionElementBinding.h"
+#include "mozilla/dom/HTMLSelectElement.h"
+#include "nsIDOMHTMLOptGroupElement.h"
+#include "nsIDOMHTMLFormElement.h"
+#include "nsGkAtoms.h"
+#include "nsStyleConsts.h"
+#include "nsIFormControl.h"
+#include "nsIForm.h"
+#include "nsIDOMNode.h"
+#include "nsIDOMHTMLCollection.h"
+#include "nsISelectControlFrame.h"
+
+// Notify/query select frame for selected state
+#include "nsIFormControlFrame.h"
+#include "nsIDocument.h"
+#include "nsIDOMHTMLSelectElement.h"
+#include "nsNodeInfoManager.h"
+#include "nsCOMPtr.h"
+#include "mozilla/EventStates.h"
+#include "nsContentCreatorFunctions.h"
+#include "mozAutoDocUpdate.h"
+#include "nsTextNode.h"
+
+/**
+ * Implementation of &lt;option&gt;
+ */
+
+NS_IMPL_NS_NEW_HTML_ELEMENT(Option)
+
+namespace mozilla {
+namespace dom {
+
+HTMLOptionElement::HTMLOptionElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
+  : nsGenericHTMLElement(aNodeInfo),
+    mSelectedChanged(false),
+    mIsSelected(false),
+    mIsInSetDefaultSelected(false)
+{
+  // We start off enabled
+  AddStatesSilently(NS_EVENT_STATE_ENABLED);
+}
+
+HTMLOptionElement::~HTMLOptionElement()
+{
+}
+
+NS_IMPL_ISUPPORTS_INHERITED(HTMLOptionElement, nsGenericHTMLElement,
+                            nsIDOMHTMLOptionElement)
+
+NS_IMPL_ELEMENT_CLONE(HTMLOptionElement)
+
+
+NS_IMETHODIMP
+HTMLOptionElement::GetForm(nsIDOMHTMLFormElement** aForm)
+{
+  NS_IF_ADDREF(*aForm = GetForm());
+  return NS_OK;
+}
+
+mozilla::dom::HTMLFormElement*
+HTMLOptionElement::GetForm()
+{
+  HTMLSelectElement* selectControl = GetSelect();
+  return selectControl ? selectControl->GetForm() : nullptr;
+}
+
+void
+HTMLOptionElement::SetSelectedInternal(bool aValue, bool aNotify)
+{
+  mSelectedChanged = true;
+  mIsSelected = aValue;
+
+  // When mIsInSetDefaultSelected is true, the state change will be handled by
+  // SetAttr/UnsetAttr.
+  if (!mIsInSetDefaultSelected) {
+    UpdateState(aNotify);
+  }
+}
+
+NS_IMETHODIMP
+HTMLOptionElement::GetSelected(bool* aValue)
+{
+  NS_ENSURE_ARG_POINTER(aValue);
+  *aValue = Selected();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HTMLOptionElement::SetSelected(bool aValue)
+{
+  // Note: The select content obj maintains all the PresState
+  // so defer to it to get the answer
+  HTMLSelectElement* selectInt = GetSelect();
+  if (selectInt) {
+    int32_t index = Index();
+    uint32_t mask = HTMLSelectElement::SET_DISABLED | HTMLSelectElement::NOTIFY;
+    if (aValue) {
+      mask |= HTMLSelectElement::IS_SELECTED;
+    }
+
+    // This should end up calling SetSelectedInternal
+    selectInt->SetOptionsSelectedByIndex(index, index, mask);
+  } else {
+    SetSelectedInternal(aValue, true);
+  }
+
+  return NS_OK;
+}
+
+NS_IMPL_BOOL_ATTR(HTMLOptionElement, DefaultSelected, selected)
+// GetText returns a whitespace compressed .textContent value.
+NS_IMPL_STRING_ATTR_WITH_FALLBACK(HTMLOptionElement, Label, label, GetText)
+NS_IMPL_STRING_ATTR_WITH_FALLBACK(HTMLOptionElement, Value, value, GetText)
+NS_IMPL_BOOL_ATTR(HTMLOptionElement, Disabled, disabled)
+
+NS_IMETHODIMP
+HTMLOptionElement::GetIndex(int32_t* aIndex)
+{
+  *aIndex = Index();
+  return NS_OK;
+}
+
+int32_t
+HTMLOptionElement::Index()
+{
+  static int32_t defaultIndex = 0;
+
+  // Only select elements can contain a list of options.
+  HTMLSelectElement* selectElement = GetSelect();
+  if (!selectElement) {
+    return defaultIndex;
+  }
+
+  HTMLOptionsCollection* options = selectElement->GetOptions();
+  if (!options) {
+    return defaultIndex;
+  }
+
+  int32_t index = defaultIndex;
+  MOZ_ALWAYS_SUCCEEDS(options->GetOptionIndex(this, 0, true, &index));
+  return index;
+}
+
+bool
+HTMLOptionElement::Selected() const
+{
+  // If we haven't been explictly selected or deselected, use our default value
+  if (!mSelectedChanged) {
+    return DefaultSelected();
+  }
+
+  return mIsSelected;
+}
+
+bool
+HTMLOptionElement::DefaultSelected() const
+{
+  return HasAttr(kNameSpaceID_None, nsGkAtoms::selected);
+}
+
+nsChangeHint
+HTMLOptionElement::GetAttributeChangeHint(const nsIAtom* aAttribute,
+                                          int32_t aModType) const
+{
+  nsChangeHint retval =
+      nsGenericHTMLElement::GetAttributeChangeHint(aAttribute, aModType);
+
+  if (aAttribute == nsGkAtoms::label ||
+      aAttribute == nsGkAtoms::text) {
+    retval |= NS_STYLE_HINT_REFLOW;
+  }
+  return retval;
+}
+
+nsresult
+HTMLOptionElement::BeforeSetAttr(int32_t aNamespaceID, nsIAtom* aName,
+                                 nsAttrValueOrString* aValue,
+                                 bool aNotify)
+{
+  nsresult rv = nsGenericHTMLElement::BeforeSetAttr(aNamespaceID, aName,
+                                                    aValue, aNotify);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (aNamespaceID != kNameSpaceID_None || aName != nsGkAtoms::selected ||
+      mSelectedChanged) {
+    return NS_OK;
+  }
+
+  bool defaultSelected = aValue;
+  // First make sure we actually set our mIsSelected state to reflect our new
+  // defaultSelected state.  If that turns out to be wrong,
+  // SetOptionsSelectedByIndex will fix it up.  But otherwise we can end up in a
+  // situation where mIsSelected is still false, but mSelectedChanged becomes
+  // true (later in this method, when we compare mIsSelected to
+  // defaultSelected), and then we start returning false for Selected() even
+  // though we're actually selected.
+  mIsSelected = defaultSelected;
+
+  // We just changed out selected state (since we look at the "selected"
+  // attribute when mSelectedChanged is false).  Let's tell our select about
+  // it.
+  HTMLSelectElement* selectInt = GetSelect();
+  if (!selectInt) {
+    return NS_OK;
+  }
+
+  NS_ASSERTION(!mSelectedChanged, "Shouldn't be here");
+
+  bool inSetDefaultSelected = mIsInSetDefaultSelected;
+  mIsInSetDefaultSelected = true;
+
+  int32_t index = Index();
+  uint32_t mask = HTMLSelectElement::SET_DISABLED;
+  if (defaultSelected) {
+    mask |= HTMLSelectElement::IS_SELECTED;
+  }
+
+  if (aNotify) {
+    mask |= HTMLSelectElement::NOTIFY;
+  }
+
+  // This can end up calling SetSelectedInternal if our selected state needs to
+  // change, which we will allow to take effect so that parts of
+  // SetOptionsSelectedByIndex that might depend on it working don't get
+  // confused.
+  selectInt->SetOptionsSelectedByIndex(index, index, mask);
+
+  // Now reset our members; when we finish the attr set we'll end up with the
+  // rigt selected state.
+  mIsInSetDefaultSelected = inSetDefaultSelected;
+  // mIsSelected might have been changed by SetOptionsSelectedByIndex.  Possibly
+  // more than once; make sure our mSelectedChanged state is set correctly.
+  mSelectedChanged = mIsSelected != defaultSelected;
+
+  return NS_OK;
+}
+
+nsresult
+HTMLOptionElement::AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
+                                const nsAttrValue* aValue, bool aNotify)
+{
+  if (aNameSpaceID == kNameSpaceID_None &&
+      aName == nsGkAtoms::value && Selected()) {
+    // Since this option is selected, changing value
+    // may have changed missing validity state of the
+    // Select element
+    HTMLSelectElement* select = GetSelect();
+    if (select) {
+      select->UpdateValueMissingValidityState();
+    }
+  }
+
+  return nsGenericHTMLElement::AfterSetAttr(aNameSpaceID, aName,
+                                            aValue, aNotify);
+}
+
+NS_IMETHODIMP
+HTMLOptionElement::GetText(nsAString& aText)
+{
+  nsAutoString text;
+
+  nsIContent* child = nsINode::GetFirstChild();
+  while (child) {
+    if (child->NodeType() == nsIDOMNode::TEXT_NODE ||
+        child->NodeType() == nsIDOMNode::CDATA_SECTION_NODE) {
+      child->AppendTextTo(text);
+    }
+    if (child->IsHTMLElement(nsGkAtoms::script) ||
+        child->IsSVGElement(nsGkAtoms::script)) {
+      child = child->GetNextNonChildNode(this);
+    } else {
+      child = child->GetNextNode(this);
+    }
+  }
+
+  // XXX No CompressWhitespace for nsAString.  Sad.
+  text.CompressWhitespace(true, true);
+  aText = text;
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HTMLOptionElement::SetText(const nsAString& aText)
+{
+  return nsContentUtils::SetNodeTextContent(this, aText, true);
+}
+
+nsresult
+HTMLOptionElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
+                              nsIContent* aBindingParent,
+                              bool aCompileEventHandlers)
+{
+  nsresult rv = nsGenericHTMLElement::BindToTree(aDocument, aParent,
+                                                 aBindingParent,
+                                                 aCompileEventHandlers);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Our new parent might change :disabled/:enabled state.
+  UpdateState(false);
+
+  return NS_OK;
+}
+
+void
+HTMLOptionElement::UnbindFromTree(bool aDeep, bool aNullParent)
+{
+  nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent);
+
+  // Our previous parent could have been involved in :disabled/:enabled state.
+  UpdateState(false);
+}
+
+EventStates
+HTMLOptionElement::IntrinsicState() const
+{
+  EventStates state = nsGenericHTMLElement::IntrinsicState();
+  if (Selected()) {
+    state |= NS_EVENT_STATE_CHECKED;
+  }
+  if (DefaultSelected()) {
+    state |= NS_EVENT_STATE_DEFAULT;
+  }
+
+  // An <option> is disabled if it has @disabled set or if it's <optgroup> has
+  // @disabled set.
+  if (HasAttr(kNameSpaceID_None, nsGkAtoms::disabled)) {
+    state |= NS_EVENT_STATE_DISABLED;
+    state &= ~NS_EVENT_STATE_ENABLED;
+  } else {
+    nsIContent* parent = GetParent();
+    if (parent && parent->IsHTMLElement(nsGkAtoms::optgroup) &&
+        parent->HasAttr(kNameSpaceID_None, nsGkAtoms::disabled)) {
+      state |= NS_EVENT_STATE_DISABLED;
+      state &= ~NS_EVENT_STATE_ENABLED;
+    } else {
+      state &= ~NS_EVENT_STATE_DISABLED;
+      state |= NS_EVENT_STATE_ENABLED;
+    }
+  }
+
+  return state;
+}
+
+// Get the select content element that contains this option
+HTMLSelectElement*
+HTMLOptionElement::GetSelect()
+{
+  nsIContent* parent = GetParent();
+  if (!parent) {
+    return nullptr;
+  }
+
+  HTMLSelectElement* select = HTMLSelectElement::FromContent(parent);
+  if (select) {
+    return select;
+  }
+
+  if (!parent->IsHTMLElement(nsGkAtoms::optgroup)) {
+    return nullptr;
+  }
+
+  return HTMLSelectElement::FromContentOrNull(parent->GetParent());
+}
+
+already_AddRefed<HTMLOptionElement>
+HTMLOptionElement::Option(const GlobalObject& aGlobal,
+                          const Optional<nsAString>& aText,
+                          const Optional<nsAString>& aValue,
+                          const Optional<bool>& aDefaultSelected,
+                          const Optional<bool>& aSelected, ErrorResult& aError)
+{
+  nsCOMPtr<nsPIDOMWindowInner> win = do_QueryInterface(aGlobal.GetAsSupports());
+  nsIDocument* doc;
+  if (!win || !(doc = win->GetExtantDoc())) {
+    aError.Throw(NS_ERROR_FAILURE);
+    return nullptr;
+  }
+
+  already_AddRefed<mozilla::dom::NodeInfo> nodeInfo =
+    doc->NodeInfoManager()->GetNodeInfo(nsGkAtoms::option, nullptr,
+                                        kNameSpaceID_XHTML,
+                                        nsIDOMNode::ELEMENT_NODE);
+
+  RefPtr<HTMLOptionElement> option = new HTMLOptionElement(nodeInfo);
+
+  if (aText.WasPassed()) {
+    // Create a new text node and append it to the option
+    RefPtr<nsTextNode> textContent =
+      new nsTextNode(option->NodeInfo()->NodeInfoManager());
+
+    textContent->SetText(aText.Value(), false);
+
+    aError = option->AppendChildTo(textContent, false);
+    if (aError.Failed()) {
+      return nullptr;
+    }
+
+    if (aValue.WasPassed()) {
+      // Set the value attribute for this element. We're calling SetAttr
+      // directly because we want to pass aNotify == false.
+      aError = option->SetAttr(kNameSpaceID_None, nsGkAtoms::value,
+                               aValue.Value(), false);
+      if (aError.Failed()) {
+        return nullptr;
+      }
+
+      if (aDefaultSelected.WasPassed()) {
+        if (aDefaultSelected.Value()) {
+          // We're calling SetAttr directly because we want to pass
+          // aNotify == false.
+          aError = option->SetAttr(kNameSpaceID_None, nsGkAtoms::selected,
+                                   EmptyString(), false);
+          if (aError.Failed()) {
+            return nullptr;
+          }
+        }
+
+        if (aSelected.WasPassed()) {
+          option->SetSelected(aSelected.Value(), aError);
+          if (aError.Failed()) {
+            return nullptr;
+          }
+        }
+      }
+    }
+  }
+
+  return option.forget();
+}
+
+nsresult
+HTMLOptionElement::CopyInnerTo(Element* aDest)
+{
+  nsresult rv = nsGenericHTMLElement::CopyInnerTo(aDest);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (aDest->OwnerDoc()->IsStaticDocument()) {
+    static_cast<HTMLOptionElement*>(aDest)->SetSelected(Selected());
+  }
+  return NS_OK;
+}
+
+JSObject*
+HTMLOptionElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
+{
+  return HTMLOptionElementBinding::Wrap(aCx, this, aGivenProto);
+}
+
+} // namespace dom
+} // namespace mozilla