Add m-esr52 at 52.6.0

1 files changed, 297 insertions, 0 deletions

diff --git a/layout/forms/nsMeterFrame.cpp b/layout/forms/nsMeterFrame.cpp
new file mode 100644
index 000000000..1f3bd8022
--- /dev/null
+++ b/layout/forms/nsMeterFrame.cpp
@@ -0,0 +1,297 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "nsMeterFrame.h"
+
+#include "nsIContent.h"
+#include "nsPresContext.h"
+#include "nsGkAtoms.h"
+#include "nsNameSpaceManager.h"
+#include "nsIDocument.h"
+#include "nsIPresShell.h"
+#include "nsNodeInfoManager.h"
+#include "nsContentCreatorFunctions.h"
+#include "nsContentUtils.h"
+#include "nsFormControlFrame.h"
+#include "nsFontMetrics.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/dom/HTMLMeterElement.h"
+#include "nsContentList.h"
+#include "nsCSSPseudoElements.h"
+#include "nsStyleSet.h"
+#include "mozilla/StyleSetHandle.h"
+#include "mozilla/StyleSetHandleInlines.h"
+#include "nsThemeConstants.h"
+#include <algorithm>
+
+using namespace mozilla;
+using mozilla::dom::Element;
+using mozilla::dom::HTMLMeterElement;
+
+nsIFrame*
+NS_NewMeterFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
+{
+  return new (aPresShell) nsMeterFrame(aContext);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsMeterFrame)
+
+nsMeterFrame::nsMeterFrame(nsStyleContext* aContext)
+  : nsContainerFrame(aContext)
+  , mBarDiv(nullptr)
+{
+}
+
+nsMeterFrame::~nsMeterFrame()
+{
+}
+
+void
+nsMeterFrame::DestroyFrom(nsIFrame* aDestructRoot)
+{
+  NS_ASSERTION(!GetPrevContinuation(),
+               "nsMeterFrame should not have continuations; if it does we "
+               "need to call RegUnregAccessKey only for the first.");
+  nsFormControlFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), false);
+  nsContentUtils::DestroyAnonymousContent(&mBarDiv);
+  nsContainerFrame::DestroyFrom(aDestructRoot);
+}
+
+nsIAtom*
+nsMeterFrame::GetType() const
+{
+  return nsGkAtoms::meterFrame;
+}
+
+nsresult
+nsMeterFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
+{
+  // Get the NodeInfoManager and tag necessary to create the meter bar div.
+  nsCOMPtr<nsIDocument> doc = mContent->GetComposedDoc();
+
+  // Create the div.
+  mBarDiv = doc->CreateHTMLElement(nsGkAtoms::div);
+
+  // Associate ::-moz-meter-bar pseudo-element to the anonymous child.
+  CSSPseudoElementType pseudoType = CSSPseudoElementType::mozMeterBar;
+  RefPtr<nsStyleContext> newStyleContext = PresContext()->StyleSet()->
+    ResolvePseudoElementStyle(mContent->AsElement(), pseudoType,
+                              StyleContext(), mBarDiv->AsElement());
+
+  if (!aElements.AppendElement(ContentInfo(mBarDiv, newStyleContext))) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+
+  return NS_OK;
+}
+
+void
+nsMeterFrame::AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
+                                       uint32_t aFilter)
+{
+  if (mBarDiv) {
+    aElements.AppendElement(mBarDiv);
+  }
+}
+
+NS_QUERYFRAME_HEAD(nsMeterFrame)
+  NS_QUERYFRAME_ENTRY(nsMeterFrame)
+  NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
+NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
+
+
+void
+nsMeterFrame::Reflow(nsPresContext*           aPresContext,
+                     ReflowOutput&     aDesiredSize,
+                     const ReflowInput& aReflowInput,
+                     nsReflowStatus&          aStatus)
+{
+  MarkInReflow();
+  DO_GLOBAL_REFLOW_COUNT("nsMeterFrame");
+  DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
+
+  NS_ASSERTION(mBarDiv, "Meter bar div must exist!");
+  NS_ASSERTION(!GetPrevContinuation(),
+               "nsMeterFrame should not have continuations; if it does we "
+               "need to call RegUnregAccessKey only for the first.");
+
+  if (mState & NS_FRAME_FIRST_REFLOW) {
+    nsFormControlFrame::RegUnRegAccessKey(this, true);
+  }
+
+  nsIFrame* barFrame = mBarDiv->GetPrimaryFrame();
+  NS_ASSERTION(barFrame, "The meter frame should have a child with a frame!");
+
+  ReflowBarFrame(barFrame, aPresContext, aReflowInput, aStatus);
+
+  aDesiredSize.SetSize(aReflowInput.GetWritingMode(),
+                       aReflowInput.ComputedSizeWithBorderPadding());
+
+  aDesiredSize.SetOverflowAreasToDesiredBounds();
+  ConsiderChildOverflow(aDesiredSize.mOverflowAreas, barFrame);
+  FinishAndStoreOverflow(&aDesiredSize);
+
+  aStatus = NS_FRAME_COMPLETE;
+
+  NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
+}
+
+void
+nsMeterFrame::ReflowBarFrame(nsIFrame*                aBarFrame,
+                             nsPresContext*           aPresContext,
+                             const ReflowInput& aReflowInput,
+                             nsReflowStatus&          aStatus)
+{
+  bool vertical = ResolvedOrientationIsVertical();
+  WritingMode wm = aBarFrame->GetWritingMode();
+  LogicalSize availSize = aReflowInput.ComputedSize(wm);
+  availSize.BSize(wm) = NS_UNCONSTRAINEDSIZE;
+  ReflowInput reflowInput(aPresContext, aReflowInput,
+                                aBarFrame, availSize);
+  nscoord size = vertical ? aReflowInput.ComputedHeight()
+                          : aReflowInput.ComputedWidth();
+  nscoord xoffset = aReflowInput.ComputedPhysicalBorderPadding().left;
+  nscoord yoffset = aReflowInput.ComputedPhysicalBorderPadding().top;
+
+  // NOTE: Introduce a new function getPosition in the content part ?
+  HTMLMeterElement* meterElement = static_cast<HTMLMeterElement*>(mContent);
+
+  double max = meterElement->Max();
+  double min = meterElement->Min();
+  double value = meterElement->Value();
+
+  double position = max - min;
+  position = position != 0 ? (value - min) / position : 1;
+
+  size = NSToCoordRound(size * position);
+
+  if (!vertical && (wm.IsVertical() ? wm.IsVerticalRL() : !wm.IsBidiLTR())) {
+    xoffset += aReflowInput.ComputedWidth() - size;
+  }
+
+  // The bar position is *always* constrained.
+  if (vertical) {
+    // We want the bar to begin at the bottom.
+    yoffset += aReflowInput.ComputedHeight() - size;
+
+    size -= reflowInput.ComputedPhysicalMargin().TopBottom() +
+            reflowInput.ComputedPhysicalBorderPadding().TopBottom();
+    size = std::max(size, 0);
+    reflowInput.SetComputedHeight(size);
+  } else {
+    size -= reflowInput.ComputedPhysicalMargin().LeftRight() +
+            reflowInput.ComputedPhysicalBorderPadding().LeftRight();
+    size = std::max(size, 0);
+    reflowInput.SetComputedWidth(size);
+  }
+
+  xoffset += reflowInput.ComputedPhysicalMargin().left;
+  yoffset += reflowInput.ComputedPhysicalMargin().top;
+
+  ReflowOutput barDesiredSize(reflowInput);
+  ReflowChild(aBarFrame, aPresContext, barDesiredSize, reflowInput, xoffset,
+              yoffset, 0, aStatus);
+  FinishReflowChild(aBarFrame, aPresContext, barDesiredSize, &reflowInput,
+                    xoffset, yoffset, 0);
+}
+
+nsresult
+nsMeterFrame::AttributeChanged(int32_t  aNameSpaceID,
+                               nsIAtom* aAttribute,
+                               int32_t  aModType)
+{
+  NS_ASSERTION(mBarDiv, "Meter bar div must exist!");
+
+  if (aNameSpaceID == kNameSpaceID_None &&
+      (aAttribute == nsGkAtoms::value ||
+       aAttribute == nsGkAtoms::max   ||
+       aAttribute == nsGkAtoms::min )) {
+    nsIFrame* barFrame = mBarDiv->GetPrimaryFrame();
+    NS_ASSERTION(barFrame, "The meter frame should have a child with a frame!");
+    PresContext()->PresShell()->FrameNeedsReflow(barFrame,
+                                                 nsIPresShell::eResize,
+                                                 NS_FRAME_IS_DIRTY);
+    InvalidateFrame();
+  }
+
+  return nsContainerFrame::AttributeChanged(aNameSpaceID, aAttribute,
+                                            aModType);
+}
+
+LogicalSize
+nsMeterFrame::ComputeAutoSize(nsRenderingContext* aRenderingContext,
+                              WritingMode         aWM,
+                              const LogicalSize&  aCBSize,
+                              nscoord             aAvailableISize,
+                              const LogicalSize&  aMargin,
+                              const LogicalSize&  aBorder,
+                              const LogicalSize&  aPadding,
+                              ComputeSizeFlags    aFlags)
+{
+  RefPtr<nsFontMetrics> fontMet =
+    nsLayoutUtils::GetFontMetricsForFrame(this, 1.0f);
+
+  const WritingMode wm = GetWritingMode();
+  LogicalSize autoSize(wm);
+  autoSize.BSize(wm) = autoSize.ISize(wm) = fontMet->Font().size; // 1em
+
+  if (ResolvedOrientationIsVertical() == wm.IsVertical()) {
+    autoSize.ISize(wm) *= 5; // 5em
+  } else {
+    autoSize.BSize(wm) *= 5; // 5em
+  }
+
+  return autoSize.ConvertTo(aWM, wm);
+}
+
+nscoord
+nsMeterFrame::GetMinISize(nsRenderingContext *aRenderingContext)
+{
+  RefPtr<nsFontMetrics> fontMet =
+    nsLayoutUtils::GetFontMetricsForFrame(this, 1.0f);
+
+  nscoord minISize = fontMet->Font().size; // 1em
+
+  if (ResolvedOrientationIsVertical() == GetWritingMode().IsVertical()) {
+    // The orientation is inline
+    minISize *= 5; // 5em
+  }
+
+  return minISize;
+}
+
+nscoord
+nsMeterFrame::GetPrefISize(nsRenderingContext *aRenderingContext)
+{
+  return GetMinISize(aRenderingContext);
+}
+
+bool
+nsMeterFrame::ShouldUseNativeStyle() const
+{
+  nsIFrame* barFrame = mBarDiv->GetPrimaryFrame();
+
+  // Use the native style if these conditions are satisfied:
+  // - both frames use the native appearance;
+  // - neither frame has author specified rules setting the border or the
+  //   background.
+  return StyleDisplay()->mAppearance == NS_THEME_METERBAR &&
+         !PresContext()->HasAuthorSpecifiedRules(this,
+                                                 NS_AUTHOR_SPECIFIED_BORDER | NS_AUTHOR_SPECIFIED_BACKGROUND) &&
+         barFrame &&
+         barFrame->StyleDisplay()->mAppearance == NS_THEME_METERCHUNK &&
+         !PresContext()->HasAuthorSpecifiedRules(barFrame,
+                                                 NS_AUTHOR_SPECIFIED_BORDER | NS_AUTHOR_SPECIFIED_BACKGROUND);
+}
+
+Element*
+nsMeterFrame::GetPseudoElement(CSSPseudoElementType aType)
+{
+  if (aType == CSSPseudoElementType::mozMeterBar) {
+    return mBarDiv;
+  }
+
+  return nsContainerFrame::GetPseudoElement(aType);
+}