1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/forms/nsRangeFrame.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,179 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef nsRangeFrame_h___
1.10 +#define nsRangeFrame_h___
1.11 +
1.12 +#include "mozilla/Attributes.h"
1.13 +#include "mozilla/Decimal.h"
1.14 +#include "mozilla/EventForwards.h"
1.15 +#include "nsContainerFrame.h"
1.16 +#include "nsIAnonymousContentCreator.h"
1.17 +#include "nsCOMPtr.h"
1.18 +
1.19 +class nsBaseContentList;
1.20 +class nsDisplayRangeFocusRing;
1.21 +
1.22 +class nsRangeFrame : public nsContainerFrame,
1.23 + public nsIAnonymousContentCreator
1.24 +{
1.25 + friend nsIFrame*
1.26 + NS_NewRangeFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
1.27 +
1.28 + friend class nsDisplayRangeFocusRing;
1.29 +
1.30 + nsRangeFrame(nsStyleContext* aContext);
1.31 + virtual ~nsRangeFrame();
1.32 +
1.33 + typedef mozilla::dom::Element Element;
1.34 +
1.35 +public:
1.36 + NS_DECL_QUERYFRAME_TARGET(nsRangeFrame)
1.37 + NS_DECL_QUERYFRAME
1.38 + NS_DECL_FRAMEARENA_HELPERS
1.39 +
1.40 + // nsIFrame overrides
1.41 + virtual void Init(nsIContent* aContent,
1.42 + nsIFrame* aParent,
1.43 + nsIFrame* aPrevInFlow) MOZ_OVERRIDE;
1.44 +
1.45 + virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;
1.46 +
1.47 + void BuildDisplayList(nsDisplayListBuilder* aBuilder,
1.48 + const nsRect& aDirtyRect,
1.49 + const nsDisplayListSet& aLists) MOZ_OVERRIDE;
1.50 +
1.51 + virtual nsresult Reflow(nsPresContext* aPresContext,
1.52 + nsHTMLReflowMetrics& aDesiredSize,
1.53 + const nsHTMLReflowState& aReflowState,
1.54 + nsReflowStatus& aStatus) MOZ_OVERRIDE;
1.55 +
1.56 +#ifdef DEBUG_FRAME_DUMP
1.57 + virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE {
1.58 + return MakeFrameName(NS_LITERAL_STRING("Range"), aResult);
1.59 + }
1.60 +#endif
1.61 +
1.62 + virtual bool IsLeaf() const MOZ_OVERRIDE { return true; }
1.63 +
1.64 +#ifdef ACCESSIBILITY
1.65 + virtual mozilla::a11y::AccType AccessibleType() MOZ_OVERRIDE;
1.66 +#endif
1.67 +
1.68 + // nsIAnonymousContentCreator
1.69 + virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) MOZ_OVERRIDE;
1.70 + virtual void AppendAnonymousContentTo(nsBaseContentList& aElements,
1.71 + uint32_t aFilter) MOZ_OVERRIDE;
1.72 +
1.73 + virtual nsresult AttributeChanged(int32_t aNameSpaceID,
1.74 + nsIAtom* aAttribute,
1.75 + int32_t aModType) MOZ_OVERRIDE;
1.76 +
1.77 + virtual nsSize ComputeAutoSize(nsRenderingContext *aRenderingContext,
1.78 + nsSize aCBSize, nscoord aAvailableWidth,
1.79 + nsSize aMargin, nsSize aBorder,
1.80 + nsSize aPadding, bool aShrinkWrap) MOZ_OVERRIDE;
1.81 +
1.82 + virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
1.83 + virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
1.84 +
1.85 + virtual nsIAtom* GetType() const MOZ_OVERRIDE;
1.86 +
1.87 + virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE
1.88 + {
1.89 + return nsContainerFrame::IsFrameOfType(aFlags &
1.90 + ~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
1.91 + }
1.92 +
1.93 + nsStyleContext* GetAdditionalStyleContext(int32_t aIndex) const MOZ_OVERRIDE;
1.94 + void SetAdditionalStyleContext(int32_t aIndex,
1.95 + nsStyleContext* aStyleContext) MOZ_OVERRIDE;
1.96 +
1.97 + /**
1.98 + * Returns true if the slider's thumb moves horizontally, or else false if it
1.99 + * moves vertically.
1.100 + *
1.101 + * aOverrideFrameSize If specified, this will be used instead of the size of
1.102 + * the frame's rect (i.e. the frame's border-box size) if the frame's
1.103 + * rect would have otherwise been examined. This should only be specified
1.104 + * during reflow when the frame's [new] border-box size has not yet been
1.105 + * stored in its mRect.
1.106 + */
1.107 + bool IsHorizontal(const nsSize *aFrameSizeOverride = nullptr) const;
1.108 +
1.109 + double GetMin() const;
1.110 + double GetMax() const;
1.111 + double GetValue() const;
1.112 +
1.113 + /**
1.114 + * Returns the input element's value as a fraction of the difference between
1.115 + * the input's minimum and its maximum (i.e. returns 0.0 when the value is
1.116 + * the same as the minimum, and returns 1.0 when the value is the same as the
1.117 + * maximum).
1.118 + */
1.119 + double GetValueAsFractionOfRange();
1.120 +
1.121 + /**
1.122 + * Returns whether the frame and its child should use the native style.
1.123 + */
1.124 + bool ShouldUseNativeStyle() const;
1.125 +
1.126 + mozilla::Decimal GetValueAtEventPoint(mozilla::WidgetGUIEvent* aEvent);
1.127 +
1.128 + /**
1.129 + * Helper that's used when the value of the range changes to reposition the
1.130 + * thumb, resize the range-progress element, and schedule a repaint. (This
1.131 + * does not reflow, since the position and size of the thumb and
1.132 + * range-progress element do not affect the position or size of any other
1.133 + * frames.)
1.134 + */
1.135 + void UpdateForValueChange();
1.136 +
1.137 + virtual Element* GetPseudoElement(nsCSSPseudoElements::Type aType) MOZ_OVERRIDE;
1.138 +
1.139 +private:
1.140 +
1.141 + nsresult MakeAnonymousDiv(Element** aResult,
1.142 + nsCSSPseudoElements::Type aPseudoType,
1.143 + nsTArray<ContentInfo>& aElements);
1.144 +
1.145 + // Helper function which reflows the anonymous div frames.
1.146 + nsresult ReflowAnonymousContent(nsPresContext* aPresContext,
1.147 + nsHTMLReflowMetrics& aDesiredSize,
1.148 + const nsHTMLReflowState& aReflowState);
1.149 +
1.150 + void DoUpdateThumbPosition(nsIFrame* aThumbFrame,
1.151 + const nsSize& aRangeSize);
1.152 +
1.153 + void DoUpdateRangeProgressFrame(nsIFrame* aProgressFrame,
1.154 + const nsSize& aRangeSize);
1.155 +
1.156 + /**
1.157 + * The div used to show the ::-moz-range-track pseudo-element.
1.158 + * @see nsRangeFrame::CreateAnonymousContent
1.159 + */
1.160 + nsCOMPtr<Element> mTrackDiv;
1.161 +
1.162 + /**
1.163 + * The div used to show the ::-moz-range-progress pseudo-element, which is
1.164 + * used to (optionally) style the specific chunk of track leading up to the
1.165 + * thumb's current position.
1.166 + * @see nsRangeFrame::CreateAnonymousContent
1.167 + */
1.168 + nsCOMPtr<Element> mProgressDiv;
1.169 +
1.170 + /**
1.171 + * The div used to show the ::-moz-range-thumb pseudo-element.
1.172 + * @see nsRangeFrame::CreateAnonymousContent
1.173 + */
1.174 + nsCOMPtr<Element> mThumbDiv;
1.175 +
1.176 + /**
1.177 + * Cached style context for -moz-focus-outer CSS pseudo-element style.
1.178 + */
1.179 + nsRefPtr<nsStyleContext> mOuterFocusStyle;
1.180 +};
1.181 +
1.182 +#endif
