2019-02-04 20:08:30 +00:00
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.class public abstract Landroidx/recyclerview/widget/SnapHelper;
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.super Landroidx/recyclerview/widget/RecyclerView$OnFlingListener;
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2019-02-04 20:29:01 +00:00
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.source "SnapHelper.java"
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2019-02-04 20:08:30 +00:00
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# static fields
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.field static final MILLISECONDS_PER_INCH:F = 100.0f
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# instance fields
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.field private mGravityScroller:Landroid/widget/Scroller;
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.field mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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.field private final mScrollListener:Landroidx/recyclerview/widget/RecyclerView$OnScrollListener;
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# direct methods
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.method public constructor <init>()V
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.locals 1
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invoke-direct {p0}, Landroidx/recyclerview/widget/RecyclerView$OnFlingListener;-><init>()V
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new-instance v0, Landroidx/recyclerview/widget/SnapHelper$1;
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invoke-direct {v0, p0}, Landroidx/recyclerview/widget/SnapHelper$1;-><init>(Landroidx/recyclerview/widget/SnapHelper;)V
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iput-object v0, p0, Landroidx/recyclerview/widget/SnapHelper;->mScrollListener:Landroidx/recyclerview/widget/RecyclerView$OnScrollListener;
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return-void
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.end method
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.method private destroyCallbacks()V
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.locals 2
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iget-object v0, p0, Landroidx/recyclerview/widget/SnapHelper;->mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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iget-object v1, p0, Landroidx/recyclerview/widget/SnapHelper;->mScrollListener:Landroidx/recyclerview/widget/RecyclerView$OnScrollListener;
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invoke-virtual {v0, v1}, Landroidx/recyclerview/widget/RecyclerView;->removeOnScrollListener(Landroidx/recyclerview/widget/RecyclerView$OnScrollListener;)V
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iget-object v0, p0, Landroidx/recyclerview/widget/SnapHelper;->mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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const/4 v1, 0x0
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invoke-virtual {v0, v1}, Landroidx/recyclerview/widget/RecyclerView;->setOnFlingListener(Landroidx/recyclerview/widget/RecyclerView$OnFlingListener;)V
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return-void
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.end method
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.method private setupCallbacks()V
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.locals 2
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.annotation system Ldalvik/annotation/Throws;
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value = {
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Ljava/lang/IllegalStateException;
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}
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.end annotation
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iget-object v0, p0, Landroidx/recyclerview/widget/SnapHelper;->mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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invoke-virtual {v0}, Landroidx/recyclerview/widget/RecyclerView;->getOnFlingListener()Landroidx/recyclerview/widget/RecyclerView$OnFlingListener;
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move-result-object v0
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if-nez v0, :cond_0
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iget-object v0, p0, Landroidx/recyclerview/widget/SnapHelper;->mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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iget-object v1, p0, Landroidx/recyclerview/widget/SnapHelper;->mScrollListener:Landroidx/recyclerview/widget/RecyclerView$OnScrollListener;
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invoke-virtual {v0, v1}, Landroidx/recyclerview/widget/RecyclerView;->addOnScrollListener(Landroidx/recyclerview/widget/RecyclerView$OnScrollListener;)V
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iget-object v0, p0, Landroidx/recyclerview/widget/SnapHelper;->mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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invoke-virtual {v0, p0}, Landroidx/recyclerview/widget/RecyclerView;->setOnFlingListener(Landroidx/recyclerview/widget/RecyclerView$OnFlingListener;)V
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return-void
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:cond_0
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new-instance v0, Ljava/lang/IllegalStateException;
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const-string v1, "An instance of OnFlingListener already set."
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invoke-direct {v0, v1}, Ljava/lang/IllegalStateException;-><init>(Ljava/lang/String;)V
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throw v0
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.end method
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.method private snapFromFling(Landroidx/recyclerview/widget/RecyclerView$LayoutManager;II)Z
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.locals 2
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.param p1 # Landroidx/recyclerview/widget/RecyclerView$LayoutManager;
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.annotation build Landroidx/annotation/NonNull;
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.end annotation
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.end param
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instance-of v0, p1, Landroidx/recyclerview/widget/RecyclerView$SmoothScroller$ScrollVectorProvider;
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const/4 v1, 0x0
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if-nez v0, :cond_0
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return v1
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:cond_0
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invoke-virtual {p0, p1}, Landroidx/recyclerview/widget/SnapHelper;->createScroller(Landroidx/recyclerview/widget/RecyclerView$LayoutManager;)Landroidx/recyclerview/widget/RecyclerView$SmoothScroller;
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move-result-object v0
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if-nez v0, :cond_1
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return v1
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:cond_1
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invoke-virtual {p0, p1, p2, p3}, Landroidx/recyclerview/widget/SnapHelper;->findTargetSnapPosition(Landroidx/recyclerview/widget/RecyclerView$LayoutManager;II)I
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move-result p2
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const/4 p3, -0x1
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if-ne p2, p3, :cond_2
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return v1
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:cond_2
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invoke-virtual {v0, p2}, Landroidx/recyclerview/widget/RecyclerView$SmoothScroller;->setTargetPosition(I)V
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invoke-virtual {p1, v0}, Landroidx/recyclerview/widget/RecyclerView$LayoutManager;->startSmoothScroll(Landroidx/recyclerview/widget/RecyclerView$SmoothScroller;)V
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const/4 p1, 0x1
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return p1
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.end method
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# virtual methods
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.method public attachToRecyclerView(Landroidx/recyclerview/widget/RecyclerView;)V
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.locals 2
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.param p1 # Landroidx/recyclerview/widget/RecyclerView;
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.annotation build Landroidx/annotation/Nullable;
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.end annotation
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.end param
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.annotation system Ldalvik/annotation/Throws;
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value = {
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Ljava/lang/IllegalStateException;
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}
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.end annotation
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iget-object v0, p0, Landroidx/recyclerview/widget/SnapHelper;->mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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if-ne v0, p1, :cond_0
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return-void
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:cond_0
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if-eqz v0, :cond_1
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invoke-direct {p0}, Landroidx/recyclerview/widget/SnapHelper;->destroyCallbacks()V
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:cond_1
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iput-object p1, p0, Landroidx/recyclerview/widget/SnapHelper;->mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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iget-object p1, p0, Landroidx/recyclerview/widget/SnapHelper;->mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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if-eqz p1, :cond_2
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invoke-direct {p0}, Landroidx/recyclerview/widget/SnapHelper;->setupCallbacks()V
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new-instance p1, Landroid/widget/Scroller;
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iget-object v0, p0, Landroidx/recyclerview/widget/SnapHelper;->mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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invoke-virtual {v0}, Landroidx/recyclerview/widget/RecyclerView;->getContext()Landroid/content/Context;
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move-result-object v0
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new-instance v1, Landroid/view/animation/DecelerateInterpolator;
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invoke-direct {v1}, Landroid/view/animation/DecelerateInterpolator;-><init>()V
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invoke-direct {p1, v0, v1}, Landroid/widget/Scroller;-><init>(Landroid/content/Context;Landroid/view/animation/Interpolator;)V
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iput-object p1, p0, Landroidx/recyclerview/widget/SnapHelper;->mGravityScroller:Landroid/widget/Scroller;
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invoke-virtual {p0}, Landroidx/recyclerview/widget/SnapHelper;->snapToTargetExistingView()V
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:cond_2
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return-void
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.end method
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.method public abstract calculateDistanceToFinalSnap(Landroidx/recyclerview/widget/RecyclerView$LayoutManager;Landroid/view/View;)[I
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.param p1 # Landroidx/recyclerview/widget/RecyclerView$LayoutManager;
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.annotation build Landroidx/annotation/NonNull;
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.end annotation
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.end param
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.param p2 # Landroid/view/View;
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.annotation build Landroidx/annotation/NonNull;
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.end annotation
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.end param
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.annotation build Landroidx/annotation/Nullable;
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.end annotation
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.end method
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.method public calculateScrollDistance(II)[I
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.locals 10
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const/4 v0, 0x2
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new-array v0, v0, [I
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iget-object v1, p0, Landroidx/recyclerview/widget/SnapHelper;->mGravityScroller:Landroid/widget/Scroller;
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const/4 v2, 0x0
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const/4 v3, 0x0
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const/high16 v6, -0x80000000
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const v7, 0x7fffffff
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const/high16 v8, -0x80000000
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const v9, 0x7fffffff
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move v4, p1
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move v5, p2
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invoke-virtual/range {v1 .. v9}, Landroid/widget/Scroller;->fling(IIIIIIII)V
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iget-object p1, p0, Landroidx/recyclerview/widget/SnapHelper;->mGravityScroller:Landroid/widget/Scroller;
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invoke-virtual {p1}, Landroid/widget/Scroller;->getFinalX()I
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move-result p1
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const/4 p2, 0x0
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aput p1, v0, p2
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iget-object p1, p0, Landroidx/recyclerview/widget/SnapHelper;->mGravityScroller:Landroid/widget/Scroller;
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invoke-virtual {p1}, Landroid/widget/Scroller;->getFinalY()I
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move-result p1
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const/4 p2, 0x1
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aput p1, v0, p2
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return-object v0
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.end method
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.method protected createScroller(Landroidx/recyclerview/widget/RecyclerView$LayoutManager;)Landroidx/recyclerview/widget/RecyclerView$SmoothScroller;
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.locals 0
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.annotation build Landroidx/annotation/Nullable;
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.end annotation
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invoke-virtual {p0, p1}, Landroidx/recyclerview/widget/SnapHelper;->createSnapScroller(Landroidx/recyclerview/widget/RecyclerView$LayoutManager;)Landroidx/recyclerview/widget/LinearSmoothScroller;
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move-result-object p1
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return-object p1
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.end method
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.method protected createSnapScroller(Landroidx/recyclerview/widget/RecyclerView$LayoutManager;)Landroidx/recyclerview/widget/LinearSmoothScroller;
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.locals 1
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.annotation build Landroidx/annotation/Nullable;
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.end annotation
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.annotation runtime Ljava/lang/Deprecated;
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.end annotation
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instance-of p1, p1, Landroidx/recyclerview/widget/RecyclerView$SmoothScroller$ScrollVectorProvider;
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if-nez p1, :cond_0
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const/4 p1, 0x0
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return-object p1
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:cond_0
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new-instance p1, Landroidx/recyclerview/widget/SnapHelper$2;
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iget-object v0, p0, Landroidx/recyclerview/widget/SnapHelper;->mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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invoke-virtual {v0}, Landroidx/recyclerview/widget/RecyclerView;->getContext()Landroid/content/Context;
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move-result-object v0
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invoke-direct {p1, p0, v0}, Landroidx/recyclerview/widget/SnapHelper$2;-><init>(Landroidx/recyclerview/widget/SnapHelper;Landroid/content/Context;)V
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return-object p1
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.end method
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.method public abstract findSnapView(Landroidx/recyclerview/widget/RecyclerView$LayoutManager;)Landroid/view/View;
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.annotation build Landroidx/annotation/Nullable;
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.end annotation
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.end method
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.method public abstract findTargetSnapPosition(Landroidx/recyclerview/widget/RecyclerView$LayoutManager;II)I
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.end method
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.method public onFling(II)Z
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.locals 4
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iget-object v0, p0, Landroidx/recyclerview/widget/SnapHelper;->mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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invoke-virtual {v0}, Landroidx/recyclerview/widget/RecyclerView;->getLayoutManager()Landroidx/recyclerview/widget/RecyclerView$LayoutManager;
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move-result-object v0
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const/4 v1, 0x0
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if-nez v0, :cond_0
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return v1
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:cond_0
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iget-object v2, p0, Landroidx/recyclerview/widget/SnapHelper;->mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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invoke-virtual {v2}, Landroidx/recyclerview/widget/RecyclerView;->getAdapter()Landroidx/recyclerview/widget/RecyclerView$Adapter;
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move-result-object v2
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if-nez v2, :cond_1
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return v1
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:cond_1
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iget-object v2, p0, Landroidx/recyclerview/widget/SnapHelper;->mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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invoke-virtual {v2}, Landroidx/recyclerview/widget/RecyclerView;->getMinFlingVelocity()I
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move-result v2
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invoke-static {p2}, Ljava/lang/Math;->abs(I)I
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move-result v3
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if-gt v3, v2, :cond_2
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invoke-static {p1}, Ljava/lang/Math;->abs(I)I
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move-result v3
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if-le v3, v2, :cond_3
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:cond_2
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invoke-direct {p0, v0, p1, p2}, Landroidx/recyclerview/widget/SnapHelper;->snapFromFling(Landroidx/recyclerview/widget/RecyclerView$LayoutManager;II)Z
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move-result p1
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if-eqz p1, :cond_3
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const/4 p1, 0x1
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return p1
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:cond_3
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return v1
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.end method
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.method snapToTargetExistingView()V
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.locals 4
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iget-object v0, p0, Landroidx/recyclerview/widget/SnapHelper;->mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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if-nez v0, :cond_0
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return-void
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:cond_0
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invoke-virtual {v0}, Landroidx/recyclerview/widget/RecyclerView;->getLayoutManager()Landroidx/recyclerview/widget/RecyclerView$LayoutManager;
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move-result-object v0
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if-nez v0, :cond_1
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return-void
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:cond_1
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invoke-virtual {p0, v0}, Landroidx/recyclerview/widget/SnapHelper;->findSnapView(Landroidx/recyclerview/widget/RecyclerView$LayoutManager;)Landroid/view/View;
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move-result-object v1
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if-nez v1, :cond_2
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return-void
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:cond_2
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invoke-virtual {p0, v0, v1}, Landroidx/recyclerview/widget/SnapHelper;->calculateDistanceToFinalSnap(Landroidx/recyclerview/widget/RecyclerView$LayoutManager;Landroid/view/View;)[I
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move-result-object v0
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const/4 v1, 0x0
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aget v2, v0, v1
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const/4 v3, 0x1
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if-nez v2, :cond_3
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aget v2, v0, v3
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if-eqz v2, :cond_4
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:cond_3
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iget-object v2, p0, Landroidx/recyclerview/widget/SnapHelper;->mRecyclerView:Landroidx/recyclerview/widget/RecyclerView;
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aget v1, v0, v1
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aget v0, v0, v3
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invoke-virtual {v2, v1, v0}, Landroidx/recyclerview/widget/RecyclerView;->smoothScrollBy(II)V
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:cond_4
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return-void
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.end method
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