Add m-esr52 at 52.6.0

1 files changed, 215 insertions, 0 deletions

diff --git a/layout/forms/nsRangeFrame.h b/layout/forms/nsRangeFrame.h
new file mode 100644
index 000000000..8a2d34a40
--- /dev/null
+++ b/layout/forms/nsRangeFrame.h
@@ -0,0 +1,215 @@
+/* -*- 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/. */
+
+#ifndef nsRangeFrame_h___
+#define nsRangeFrame_h___
+
+#include "mozilla/Attributes.h"
+#include "mozilla/Decimal.h"
+#include "mozilla/EventForwards.h"
+#include "nsContainerFrame.h"
+#include "nsIAnonymousContentCreator.h"
+#include "nsIDOMEventListener.h"
+#include "nsCOMPtr.h"
+
+class nsDisplayRangeFocusRing;
+
+class nsRangeFrame : public nsContainerFrame,
+                     public nsIAnonymousContentCreator
+{
+  friend nsIFrame*
+  NS_NewRangeFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
+
+  friend class nsDisplayRangeFocusRing;
+
+  explicit nsRangeFrame(nsStyleContext* aContext);
+  virtual ~nsRangeFrame();
+
+  typedef mozilla::CSSPseudoElementType CSSPseudoElementType;
+  typedef mozilla::dom::Element Element;
+
+public:
+  NS_DECL_QUERYFRAME_TARGET(nsRangeFrame)
+  NS_DECL_QUERYFRAME
+  NS_DECL_FRAMEARENA_HELPERS
+
+  // nsIFrame overrides
+  virtual void Init(nsIContent*       aContent,
+                    nsContainerFrame* aParent,
+                    nsIFrame*         aPrevInFlow) override;
+
+  virtual void DestroyFrom(nsIFrame* aDestructRoot) override;
+
+  void BuildDisplayList(nsDisplayListBuilder*   aBuilder,
+                        const nsRect&           aDirtyRect,
+                        const nsDisplayListSet& aLists) override;
+
+  virtual void Reflow(nsPresContext*           aPresContext,
+                      ReflowOutput&     aDesiredSize,
+                      const ReflowInput& aReflowInput,
+                      nsReflowStatus&          aStatus) override;
+
+#ifdef DEBUG_FRAME_DUMP
+  virtual nsresult GetFrameName(nsAString& aResult) const override {
+    return MakeFrameName(NS_LITERAL_STRING("Range"), aResult);
+  }
+#endif
+
+  virtual bool IsLeaf() const override { return true; }
+
+#ifdef ACCESSIBILITY
+  virtual mozilla::a11y::AccType AccessibleType() override;
+#endif
+
+  // nsIAnonymousContentCreator
+  virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) override;
+  virtual void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
+                                        uint32_t aFilter) override;
+
+  virtual nsresult AttributeChanged(int32_t  aNameSpaceID,
+                                    nsIAtom* aAttribute,
+                                    int32_t  aModType) override;
+
+  virtual mozilla::LogicalSize
+  ComputeAutoSize(nsRenderingContext*         aRenderingContext,
+                  mozilla::WritingMode        aWM,
+                  const mozilla::LogicalSize& aCBSize,
+                  nscoord                     aAvailableISize,
+                  const mozilla::LogicalSize& aMargin,
+                  const mozilla::LogicalSize& aBorder,
+                  const mozilla::LogicalSize& aPadding,
+                  ComputeSizeFlags            aFlags) override;
+
+  virtual nscoord GetMinISize(nsRenderingContext *aRenderingContext) override;
+  virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) override;
+
+  virtual nsIAtom* GetType() const override;
+
+  virtual bool IsFrameOfType(uint32_t aFlags) const override
+  {
+    return nsContainerFrame::IsFrameOfType(aFlags &
+      ~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
+  }
+
+  nsStyleContext* GetAdditionalStyleContext(int32_t aIndex) const override;
+  void SetAdditionalStyleContext(int32_t aIndex,
+                                 nsStyleContext* aStyleContext) override;
+
+  /**
+   * Returns true if the slider's thumb moves horizontally, or else false if it
+   * moves vertically.
+   */
+  bool IsHorizontal() const;
+
+  /**
+   * Returns true if the slider is oriented along the inline axis.
+   */
+  bool IsInlineOriented() const {
+    return IsHorizontal() != GetWritingMode().IsVertical();
+  }
+
+  /**
+   * Returns true if the slider's thumb moves right-to-left for increasing
+   * values; only relevant when IsHorizontal() is true.
+   */
+  bool IsRightToLeft() const {
+    MOZ_ASSERT(IsHorizontal());
+    mozilla::WritingMode wm = GetWritingMode();
+    return wm.IsVertical() ? wm.IsVerticalRL() : !wm.IsBidiLTR();
+  }
+
+  double GetMin() const;
+  double GetMax() const;
+  double GetValue() const;
+
+  /** 
+   * Returns the input element's value as a fraction of the difference between
+   * the input's minimum and its maximum (i.e. returns 0.0 when the value is
+   * the same as the minimum, and returns 1.0 when the value is the same as the 
+   * maximum).
+   */  
+  double GetValueAsFractionOfRange();
+
+  /**
+   * Returns whether the frame and its child should use the native style.
+   */
+  bool ShouldUseNativeStyle() const;
+
+  mozilla::Decimal GetValueAtEventPoint(mozilla::WidgetGUIEvent* aEvent);
+
+  /**
+   * Helper that's used when the value of the range changes to reposition the
+   * thumb, resize the range-progress element, and schedule a repaint. (This
+   * does not reflow, since the position and size of the thumb and
+   * range-progress element do not affect the position or size of any other
+   * frames.)
+   */
+  void UpdateForValueChange();
+
+  virtual Element* GetPseudoElement(CSSPseudoElementType aType) override;
+
+private:
+
+  nsresult MakeAnonymousDiv(Element** aResult,
+                            CSSPseudoElementType aPseudoType,
+                            nsTArray<ContentInfo>& aElements);
+
+  // Helper function which reflows the anonymous div frames.
+  void ReflowAnonymousContent(nsPresContext*           aPresContext,
+                              ReflowOutput&     aDesiredSize,
+                              const ReflowInput& aReflowInput);
+
+  void DoUpdateThumbPosition(nsIFrame* aThumbFrame,
+                             const nsSize& aRangeSize);
+
+  void DoUpdateRangeProgressFrame(nsIFrame* aProgressFrame,
+                                  const nsSize& aRangeSize);
+
+  /**
+   * The div used to show the ::-moz-range-track pseudo-element.
+   * @see nsRangeFrame::CreateAnonymousContent
+   */
+  nsCOMPtr<Element> mTrackDiv;
+
+  /**
+   * The div used to show the ::-moz-range-progress pseudo-element, which is
+   * used to (optionally) style the specific chunk of track leading up to the
+   * thumb's current position.
+   * @see nsRangeFrame::CreateAnonymousContent
+   */
+  nsCOMPtr<Element> mProgressDiv;
+
+  /**
+   * The div used to show the ::-moz-range-thumb pseudo-element.
+   * @see nsRangeFrame::CreateAnonymousContent
+   */
+  nsCOMPtr<Element> mThumbDiv;
+
+  /**
+   * Cached style context for -moz-focus-outer CSS pseudo-element style.
+   */
+  RefPtr<nsStyleContext> mOuterFocusStyle;
+
+  class DummyTouchListener final : public nsIDOMEventListener
+  {
+  private:
+    ~DummyTouchListener() {}
+
+  public:
+    NS_DECL_ISUPPORTS
+
+    NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent) override
+    {
+      return NS_OK;
+    }
+  };
+
+  /**
+   * A no-op touch-listener used for APZ purposes (see nsRangeFrame::Init).
+   */
+  RefPtr<DummyTouchListener> mDummyTouchListener;
+};
+
+#endif