Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 221 insertions, 0 deletions

diff --git a/dom/html/HTMLDialogElement.cpp b/dom/html/HTMLDialogElement.cpp
new file mode 100644
index 0000000000..4112768020
--- /dev/null
+++ b/dom/html/HTMLDialogElement.cpp
@@ -0,0 +1,221 @@
+/* -*- 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/HTMLDialogElement.h"
+#include "mozilla/dom/ElementBinding.h"
+#include "mozilla/dom/HTMLDialogElementBinding.h"
+#include "mozilla/dom/HTMLUnknownElement.h"
+#include "mozilla/StaticPrefs_dom.h"
+
+#include "nsContentUtils.h"
+#include "nsFocusManager.h"
+#include "nsIFrame.h"
+
+// Expand NS_IMPL_NS_NEW_HTML_ELEMENT(Dialog) with pref check
+nsGenericHTMLElement* NS_NewHTMLDialogElement(
+    already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
+    mozilla::dom::FromParser aFromParser) {
+  RefPtr<mozilla::dom::NodeInfo> nodeInfo(aNodeInfo);
+  auto* nim = nodeInfo->NodeInfoManager();
+  bool isChromeDocument = nsContentUtils::IsChromeDoc(nodeInfo->GetDocument());
+  if (mozilla::StaticPrefs::dom_dialog_element_enabled() || isChromeDocument) {
+    return new (nim) mozilla::dom::HTMLDialogElement(nodeInfo.forget());
+  }
+  return new (nim) mozilla::dom::HTMLUnknownElement(nodeInfo.forget());
+}
+
+namespace mozilla::dom {
+
+HTMLDialogElement::~HTMLDialogElement() = default;
+
+NS_IMPL_ELEMENT_CLONE(HTMLDialogElement)
+
+bool HTMLDialogElement::IsDialogEnabled(JSContext* aCx,
+                                        JS::Handle<JSObject*> aObj) {
+  return StaticPrefs::dom_dialog_element_enabled() ||
+         nsContentUtils::IsSystemCaller(aCx);
+}
+
+void HTMLDialogElement::Close(
+    const mozilla::dom::Optional<nsAString>& aReturnValue) {
+  if (!Open()) {
+    return;
+  }
+  if (aReturnValue.WasPassed()) {
+    SetReturnValue(aReturnValue.Value());
+  }
+
+  SetOpen(false, IgnoreErrors());
+
+  RemoveFromTopLayerIfNeeded();
+
+  RefPtr<AsyncEventDispatcher> eventDispatcher =
+      new AsyncEventDispatcher(this, u"close"_ns, CanBubble::eNo);
+  eventDispatcher->PostDOMEvent();
+}
+
+void HTMLDialogElement::Show() {
+  if (Open()) {
+    return;
+  }
+  SetOpen(true, IgnoreErrors());
+  FocusDialog();
+}
+
+bool HTMLDialogElement::IsInTopLayer() const {
+  return State().HasState(NS_EVENT_STATE_MODAL_DIALOG);
+}
+
+void HTMLDialogElement::AddToTopLayerIfNeeded() {
+  if (IsInTopLayer()) {
+    return;
+  }
+
+  Document* doc = OwnerDoc();
+  doc->TopLayerPush(this);
+  doc->SetBlockedByModalDialog(*this);
+  AddStates(NS_EVENT_STATE_MODAL_DIALOG);
+}
+
+void HTMLDialogElement::RemoveFromTopLayerIfNeeded() {
+  if (!IsInTopLayer()) {
+    return;
+  }
+  auto predictFunc = [&](Element* element) { return element == this; };
+
+  Document* doc = OwnerDoc();
+  DebugOnly<Element*> removedElement = doc->TopLayerPop(predictFunc);
+  MOZ_ASSERT(removedElement == this);
+  RemoveStates(NS_EVENT_STATE_MODAL_DIALOG);
+  doc->UnsetBlockedByModalDialog(*this);
+}
+
+void HTMLDialogElement::UnbindFromTree(bool aNullParent) {
+  RemoveFromTopLayerIfNeeded();
+  nsGenericHTMLElement::UnbindFromTree(aNullParent);
+}
+
+void HTMLDialogElement::ShowModal(ErrorResult& aError) {
+  if (!IsInComposedDoc()) {
+    aError.ThrowInvalidStateError("Dialog element is not connected");
+    return;
+  }
+
+  if (Open()) {
+    aError.ThrowInvalidStateError(
+        "Dialog element already has an 'open' attribute");
+    return;
+  }
+
+  AddToTopLayerIfNeeded();
+
+  SetOpen(true, aError);
+
+  FocusDialog();
+
+  aError.SuppressException();
+}
+
+void HTMLDialogElement::FocusDialog() {
+  // 1) If subject is inert, return.
+  // 2) Let control be the first descendant element of subject, in tree
+  // order, that is not inert and has the autofocus attribute specified.
+  if (RefPtr<Document> doc = GetComposedDoc()) {
+    doc->FlushPendingNotifications(FlushType::Frames);
+  }
+
+  Element* control = nullptr;
+  nsIContent* child = GetFirstChild();
+  while (child) {
+    if (child->IsElement()) {
+      nsIFrame* frame = child->GetPrimaryFrame();
+      if (frame && frame->IsFocusable()) {
+        if (child->AsElement()->HasAttr(kNameSpaceID_None,
+                                        nsGkAtoms::autofocus)) {
+          // Find the first descendant of element of subject that this
+          // not inert and has autofucus attribute
+          // inert bug: https://bugzilla.mozilla.org/show_bug.cgi?id=921504
+          control = child->AsElement();
+          break;
+        }
+        // If there isn't one, then let control be the first non-inert
+        // descendant element of subject, in tree order.
+        if (!control) {
+          control = child->AsElement();
+        }
+      }
+    }
+    child = child->GetNextNode(this);
+  }
+  // If there isn't one of those either, then let control be subject.
+  if (!control) {
+    control = this;
+  }
+
+  // 3) Run the focusing steps for control.
+  ErrorResult rv;
+  nsIFrame* frame = control->GetPrimaryFrame();
+  if (frame && frame->IsFocusable()) {
+    control->Focus(FocusOptions(), CallerType::NonSystem, rv);
+    if (rv.Failed()) {
+      return;
+    }
+  } else {
+    nsFocusManager* fm = nsFocusManager::GetFocusManager();
+    if (fm) {
+      // Clear the focus which ends up making the body gets focused
+      fm->ClearFocus(OwnerDoc()->GetWindow());
+    }
+  }
+
+  // 4) Let topDocument be the active document of control's node document's
+  // browsing context's top-level browsing context.
+  // 5) If control's node document's origin is not the same as the origin of
+  // topDocument, then return.
+  BrowsingContext* bc = control->OwnerDoc()->GetBrowsingContext();
+  if (bc && bc->SameOriginWithTop()) {
+    nsCOMPtr<nsIDocShell> docShell = bc->Top()->GetDocShell();
+    if (docShell) {
+      if (Document* topDocument = docShell->GetDocument()) {
+        // 6) Empty topDocument's autofocus candidates.
+        // 7) Set topDocument's autofocus processed flag to true.
+        topDocument->SetAutoFocusFired();
+      }
+    }
+  }
+}
+
+void HTMLDialogElement::QueueCancelDialog() {
+  // queues an element task on the user interaction task source
+  OwnerDoc()
+      ->EventTargetFor(TaskCategory::UI)
+      ->Dispatch(NewRunnableMethod("HTMLDialogElement::RunCancelDialogSteps",
+                                   this,
+                                   &HTMLDialogElement::RunCancelDialogSteps));
+}
+
+void HTMLDialogElement::RunCancelDialogSteps() {
+  // 1) Let close be the result of firing an event named cancel at dialog, with
+  // the cancelable attribute initialized to true.
+  bool defaultAction = true;
+  nsContentUtils::DispatchTrustedEvent(OwnerDoc(), this, u"cancel"_ns,
+                                       CanBubble::eNo, Cancelable::eYes,
+                                       &defaultAction);
+
+  // 2) If close is true and dialog has an open attribute, then close the dialog
+  // with no return value.
+  if (defaultAction) {
+    Optional<nsAString> retValue;
+    Close(retValue);
+  }
+}
+
+JSObject* HTMLDialogElement::WrapNode(JSContext* aCx,
+                                      JS::Handle<JSObject*> aGivenProto) {
+  return HTMLDialogElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+}  // namespace mozilla::dom