1 files changed, 202 insertions, 0 deletions
diff --git a/layout/forms/nsCheckboxRadioFrame.cpp b/layout/forms/nsCheckboxRadioFrame.cpp
new file mode 100644
index 0000000000..13c131e720
--- /dev/null
+++ b/layout/forms/nsCheckboxRadioFrame.cpp
@@ -0,0 +1,202 @@
+/* -*- 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 "nsCheckboxRadioFrame.h"
+
+#include "nsGkAtoms.h"
+#include "nsLayoutUtils.h"
+#include "mozilla/dom/HTMLInputElement.h"
+#include "mozilla/EventStateManager.h"
+#include "mozilla/LookAndFeel.h"
+#include "mozilla/PresShell.h"
+#include "nsDeviceContext.h"
+#include "nsIContent.h"
+#include "nsStyleConsts.h"
+
+using namespace mozilla;
+using mozilla::dom::Element;
+using mozilla::dom::HTMLInputElement;
+
+//#define FCF_NOISY
+
+nsCheckboxRadioFrame* NS_NewCheckboxRadioFrame(PresShell* aPresShell,
+                                               ComputedStyle* aStyle) {
+  return new (aPresShell)
+      nsCheckboxRadioFrame(aStyle, aPresShell->GetPresContext());
+}
+
+nsCheckboxRadioFrame::nsCheckboxRadioFrame(ComputedStyle* aStyle,
+                                           nsPresContext* aPresContext)
+    : nsAtomicContainerFrame(aStyle, aPresContext, kClassID) {}
+
+nsCheckboxRadioFrame::~nsCheckboxRadioFrame() = default;
+
+void nsCheckboxRadioFrame::DestroyFrom(nsIFrame* aDestructRoot,
+                                       PostDestroyData& aPostDestroyData) {
+  // Unregister the access key registered in reflow
+  nsCheckboxRadioFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), false);
+  nsAtomicContainerFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsCheckboxRadioFrame)
+
+NS_QUERYFRAME_HEAD(nsCheckboxRadioFrame)
+  NS_QUERYFRAME_ENTRY(nsIFormControlFrame)
+NS_QUERYFRAME_TAIL_INHERITING(nsAtomicContainerFrame)
+
+/* virtual */
+nscoord nsCheckboxRadioFrame::GetMinISize(gfxContext* aRenderingContext) {
+  nscoord result;
+  DISPLAY_MIN_INLINE_SIZE(this, result);
+  result = StyleDisplay()->HasAppearance() ? DefaultSize() : 0;
+  return result;
+}
+
+/* virtual */
+nscoord nsCheckboxRadioFrame::GetPrefISize(gfxContext* aRenderingContext) {
+  nscoord result;
+  DISPLAY_PREF_INLINE_SIZE(this, result);
+  result = StyleDisplay()->HasAppearance() ? DefaultSize() : 0;
+  return result;
+}
+
+/* virtual */
+LogicalSize nsCheckboxRadioFrame::ComputeAutoSize(
+    gfxContext* aRC, WritingMode aWM, const LogicalSize& aCBSize,
+    nscoord aAvailableISize, const LogicalSize& aMargin,
+    const LogicalSize& aBorderPadding, ComputeSizeFlags aFlags) {
+  LogicalSize size(aWM, 0, 0);
+  if (!StyleDisplay()->HasAppearance()) {
+    return size;
+  }
+
+  // Note: this call always set the BSize to NS_UNCONSTRAINEDSIZE.
+  size = nsAtomicContainerFrame::ComputeAutoSize(
+      aRC, aWM, aCBSize, aAvailableISize, aMargin, aBorderPadding, aFlags);
+  size.BSize(aWM) = DefaultSize();
+  return size;
+}
+
+nscoord nsCheckboxRadioFrame::GetLogicalBaseline(
+    WritingMode aWritingMode) const {
+  NS_ASSERTION(!IsSubtreeDirty(), "frame must not be dirty");
+
+  // For appearance:none we use a standard CSS baseline, i.e. synthesized from
+  // our margin-box.
+  if (!StyleDisplay()->HasAppearance()) {
+    return nsAtomicContainerFrame::GetLogicalBaseline(aWritingMode);
+  }
+
+  // This is for compatibility with Chrome, Safari and Edge (Dec 2016).
+  // Treat radio buttons and checkboxes as having an intrinsic baseline
+  // at the block-end of the control (use the block-end content edge rather
+  // than the margin edge).
+  // For "inverted" lines (typically in writing-mode:vertical-lr), use the
+  // block-start end instead.
+  return aWritingMode.IsLineInverted()
+             ? GetLogicalUsedBorderAndPadding(aWritingMode).BStart(aWritingMode)
+             : BSize(aWritingMode) -
+                   GetLogicalUsedBorderAndPadding(aWritingMode)
+                       .BEnd(aWritingMode);
+}
+
+void nsCheckboxRadioFrame::Reflow(nsPresContext* aPresContext,
+                                  ReflowOutput& aDesiredSize,
+                                  const ReflowInput& aReflowInput,
+                                  nsReflowStatus& aStatus) {
+  MarkInReflow();
+  DO_GLOBAL_REFLOW_COUNT("nsCheckboxRadioFrame");
+  DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
+  MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
+  NS_FRAME_TRACE(
+      NS_FRAME_TRACE_CALLS,
+      ("enter nsCheckboxRadioFrame::Reflow: aMaxSize=%d,%d",
+       aReflowInput.AvailableWidth(), aReflowInput.AvailableHeight()));
+
+  if (mState & NS_FRAME_FIRST_REFLOW) {
+    RegUnRegAccessKey(static_cast<nsIFrame*>(this), true);
+  }
+
+  const auto wm = aReflowInput.GetWritingMode();
+  aDesiredSize.SetSize(wm, aReflowInput.ComputedSizeWithBorderPadding(wm));
+
+  if (nsLayoutUtils::FontSizeInflationEnabled(aPresContext)) {
+    float inflation = nsLayoutUtils::FontSizeInflationFor(this);
+    aDesiredSize.Width() *= inflation;
+    aDesiredSize.Height() *= inflation;
+  }
+
+  NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
+                 ("exit nsCheckboxRadioFrame::Reflow: size=%d,%d",
+                  aDesiredSize.Width(), aDesiredSize.Height()));
+  NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
+
+  aDesiredSize.SetOverflowAreasToDesiredBounds();
+  FinishAndStoreOverflow(&aDesiredSize);
+}
+
+nsresult nsCheckboxRadioFrame::RegUnRegAccessKey(nsIFrame* aFrame,
+                                                 bool aDoReg) {
+  NS_ENSURE_ARG_POINTER(aFrame);
+
+  nsPresContext* presContext = aFrame->PresContext();
+
+  NS_ASSERTION(presContext, "aPresContext is NULL in RegUnRegAccessKey!");
+
+  nsAutoString accessKey;
+
+  Element* content = aFrame->GetContent()->AsElement();
+  content->GetAttr(kNameSpaceID_None, nsGkAtoms::accesskey, accessKey);
+  if (!accessKey.IsEmpty()) {
+    EventStateManager* stateManager = presContext->EventStateManager();
+    if (aDoReg) {
+      stateManager->RegisterAccessKey(content, (uint32_t)accessKey.First());
+    } else {
+      stateManager->UnregisterAccessKey(content, (uint32_t)accessKey.First());
+    }
+    return NS_OK;
+  }
+  return NS_ERROR_FAILURE;
+}
+
+void nsCheckboxRadioFrame::SetFocus(bool aOn, bool aRepaint) {}
+
+nsresult nsCheckboxRadioFrame::HandleEvent(nsPresContext* aPresContext,
+                                           WidgetGUIEvent* aEvent,
+                                           nsEventStatus* aEventStatus) {
+  // Check for disabled content so that selection works properly (?).
+  if (IsContentDisabled()) {
+    return nsIFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
+  }
+  return NS_OK;
+}
+
+void nsCheckboxRadioFrame::GetCurrentCheckState(bool* aState) {
+  HTMLInputElement* inputElement = HTMLInputElement::FromNode(mContent);
+  if (inputElement) {
+    *aState = inputElement->Checked();
+  }
+}
+
+nsresult nsCheckboxRadioFrame::SetFormProperty(nsAtom* aName,
+                                               const nsAString& aValue) {
+  return NS_OK;
+}
+
+// static
+nsRect nsCheckboxRadioFrame::GetUsableScreenRect(nsPresContext* aPresContext) {
+  nsRect screen;
+
+  nsDeviceContext* context = aPresContext->DeviceContext();
+  int32_t dropdownCanOverlapOSBar =
+      LookAndFeel::GetInt(LookAndFeel::IntID::MenusCanOverlapOSBar, 0);
+  if (dropdownCanOverlapOSBar)
+    context->GetRect(screen);
+  else
+    context->GetClientRect(screen);
+
+  return screen;
+}