1 files changed, 109 insertions, 106 deletions
diff --git a/library/main/src/com/android/setupwizardlib/view/StickyHeaderListView.java b/library/main/src/com/android/setupwizardlib/view/StickyHeaderListView.java
index 58274f6..c226f29 100644
--- a/library/main/src/com/android/setupwizardlib/view/StickyHeaderListView.java
+++ b/library/main/src/com/android/setupwizardlib/view/StickyHeaderListView.java
@@ -29,7 +29,6 @@ import android.view.View;
 import android.view.WindowInsets;
 import android.view.accessibility.AccessibilityEvent;
 import android.widget.ListView;
-
 import com.android.setupwizardlib.R;
 
 /**
@@ -39,125 +38,129 @@ import com.android.setupwizardlib.R;
  * when the sticky element hits the top of the view.
  *
  * <p>There are a few things to note:
+ *
  * <ol>
  *   <li>The two supported scenarios are StickyHeaderListView -> Header (stickyContainer) -> sticky,
- *   and StickyHeaderListView -> Header (sticky). The arrow (->) represents parent/child
- *   relationship and must be immediate child.
+ *       and StickyHeaderListView -> Header (sticky). The arrow (->) represents parent/child
+ *       relationship and must be immediate child.
  *   <li>The view does not work well with padding. b/16190933
  *   <li>If fitsSystemWindows is true, then this will offset the sticking position by the height of
- *   the system decorations at the top of the screen.
+ *       the system decorations at the top of the screen.
  * </ol>
  *
  * @see StickyHeaderScrollView
  */
 public class StickyHeaderListView extends ListView {
 
-    private View mSticky;
-    private View mStickyContainer;
-    private int mStatusBarInset = 0;
-    private RectF mStickyRect = new RectF();
-
-    public StickyHeaderListView(Context context) {
-        super(context);
-        init(null, android.R.attr.listViewStyle);
+  private View sticky;
+  private View stickyContainer;
+  private int statusBarInset = 0;
+  private final RectF stickyRect = new RectF();
+
+  public StickyHeaderListView(Context context) {
+    super(context);
+    init(null, android.R.attr.listViewStyle);
+  }
+
+  public StickyHeaderListView(Context context, AttributeSet attrs) {
+    super(context, attrs);
+    init(attrs, android.R.attr.listViewStyle);
+  }
+
+  public StickyHeaderListView(Context context, AttributeSet attrs, int defStyleAttr) {
+    super(context, attrs, defStyleAttr);
+    init(attrs, defStyleAttr);
+  }
+
+  private void init(AttributeSet attrs, int defStyleAttr) {
+    final TypedArray a =
+        getContext()
+            .obtainStyledAttributes(attrs, R.styleable.SuwStickyHeaderListView, defStyleAttr, 0);
+    int headerResId = a.getResourceId(R.styleable.SuwStickyHeaderListView_suwHeader, 0);
+    if (headerResId != 0) {
+      LayoutInflater inflater = LayoutInflater.from(getContext());
+      View header = inflater.inflate(headerResId, this, false);
+      addHeaderView(header, null, false);
     }
-
-    public StickyHeaderListView(Context context, AttributeSet attrs) {
-        super(context, attrs);
-        init(attrs, android.R.attr.listViewStyle);
+    a.recycle();
+  }
+
+  @Override
+  protected void onLayout(boolean changed, int l, int t, int r, int b) {
+    super.onLayout(changed, l, t, r, b);
+    if (sticky == null) {
+      updateStickyView();
     }
-
-    public StickyHeaderListView(Context context, AttributeSet attrs, int defStyleAttr) {
-        super(context, attrs, defStyleAttr);
-        init(attrs, defStyleAttr);
+  }
+
+  public void updateStickyView() {
+    sticky = findViewWithTag("sticky");
+    stickyContainer = findViewWithTag("stickyContainer");
+  }
+
+  @Override
+  public boolean dispatchTouchEvent(MotionEvent ev) {
+    if (stickyRect.contains(ev.getX(), ev.getY())) {
+      ev.offsetLocation(-stickyRect.left, -stickyRect.top);
+      return stickyContainer.dispatchTouchEvent(ev);
+    } else {
+      return super.dispatchTouchEvent(ev);
     }
-
-    private void init(AttributeSet attrs, int defStyleAttr) {
-        final TypedArray a = getContext().obtainStyledAttributes(attrs,
-                R.styleable.SuwStickyHeaderListView, defStyleAttr, 0);
-        int headerResId = a.getResourceId(R.styleable.SuwStickyHeaderListView_suwHeader, 0);
-        if (headerResId != 0) {
-            LayoutInflater inflater = LayoutInflater.from(getContext());
-            View header = inflater.inflate(headerResId, this, false);
-            addHeaderView(header, null, false);
-        }
-        a.recycle();
-    }
-
-    @Override
-    protected void onLayout(boolean changed, int l, int t, int r, int b) {
-        super.onLayout(changed, l, t, r, b);
-        if (mSticky == null) {
-            updateStickyView();
-        }
+  }
+
+  @Override
+  public void draw(Canvas canvas) {
+    super.draw(canvas);
+    if (sticky != null) {
+      final int saveCount = canvas.save();
+      // The view to draw when sticking to the top
+      final View drawTarget = stickyContainer != null ? stickyContainer : sticky;
+      // The offset to draw the view at when sticky
+      final int drawOffset = stickyContainer != null ? sticky.getTop() : 0;
+      // Position of the draw target, relative to the outside of the scrollView
+      final int drawTop = drawTarget.getTop();
+      if (drawTop + drawOffset < statusBarInset || !drawTarget.isShown()) {
+        // ListView does not translate the canvas, so we can simply draw at the top
+        stickyRect.set(
+            0,
+            -drawOffset + statusBarInset,
+            drawTarget.getWidth(),
+            drawTarget.getHeight() - drawOffset + statusBarInset);
+        canvas.translate(0, stickyRect.top);
+        canvas.clipRect(0, 0, drawTarget.getWidth(), drawTarget.getHeight());
+        drawTarget.draw(canvas);
+      } else {
+        stickyRect.setEmpty();
+      }
+      canvas.restoreToCount(saveCount);
     }
-
-    public void updateStickyView() {
-        mSticky = findViewWithTag("sticky");
-        mStickyContainer = findViewWithTag("stickyContainer");
+  }
+
+  @Override
+  @TargetApi(Build.VERSION_CODES.LOLLIPOP)
+  public WindowInsets onApplyWindowInsets(WindowInsets insets) {
+    if (getFitsSystemWindows()) {
+      statusBarInset = insets.getSystemWindowInsetTop();
+      insets.replaceSystemWindowInsets(
+          insets.getSystemWindowInsetLeft(),
+          0, /* top */
+          insets.getSystemWindowInsetRight(),
+          insets.getSystemWindowInsetBottom());
     }
-
-    @Override
-    public boolean dispatchTouchEvent(MotionEvent ev) {
-        if (mStickyRect.contains(ev.getX(), ev.getY())) {
-            ev.offsetLocation(-mStickyRect.left, -mStickyRect.top);
-            return mStickyContainer.dispatchTouchEvent(ev);
-        } else {
-            return super.dispatchTouchEvent(ev);
-        }
-    }
-
-    @Override
-    public void draw(Canvas canvas) {
-        super.draw(canvas);
-        if (mSticky != null) {
-            final int saveCount = canvas.save();
-            // The view to draw when sticking to the top
-            final View drawTarget = mStickyContainer != null ? mStickyContainer : mSticky;
-            // The offset to draw the view at when sticky
-            final int drawOffset = mStickyContainer != null ? mSticky.getTop() : 0;
-            // Position of the draw target, relative to the outside of the scrollView
-            final int drawTop = drawTarget.getTop();
-            if (drawTop + drawOffset < mStatusBarInset || !drawTarget.isShown()) {
-                // ListView does not translate the canvas, so we can simply draw at the top
-                mStickyRect.set(0, -drawOffset + mStatusBarInset, drawTarget.getWidth(),
-                        drawTarget.getHeight() - drawOffset + mStatusBarInset);
-                canvas.translate(0, mStickyRect.top);
-                canvas.clipRect(0, 0, drawTarget.getWidth(), drawTarget.getHeight());
-                drawTarget.draw(canvas);
-            } else {
-                mStickyRect.setEmpty();
-            }
-            canvas.restoreToCount(saveCount);
-        }
-    }
-
-    @Override
-    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
-    public WindowInsets onApplyWindowInsets(WindowInsets insets) {
-        if (getFitsSystemWindows()) {
-            mStatusBarInset = insets.getSystemWindowInsetTop();
-            insets.replaceSystemWindowInsets(
-                    insets.getSystemWindowInsetLeft(),
-                    0, /* top */
-                    insets.getSystemWindowInsetRight(),
-                    insets.getSystemWindowInsetBottom()
-            );
-        }
-        return insets;
-    }
-
-    @Override
-    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
-        super.onInitializeAccessibilityEvent(event);
-
-        // Decoration-only headers should not count as an item for accessibility, adjust the
-        // accessibility event to account for that.
-        final int numberOfHeaders = mSticky != null ? 1 : 0;
-        event.setItemCount(event.getItemCount() - numberOfHeaders);
-        event.setFromIndex(Math.max(event.getFromIndex() - numberOfHeaders, 0));
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
-            event.setToIndex(Math.max(event.getToIndex() - numberOfHeaders, 0));
-        }
+    return insets;
+  }
+
+  @Override
+  public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
+    super.onInitializeAccessibilityEvent(event);
+
+    // Decoration-only headers should not count as an item for accessibility, adjust the
+    // accessibility event to account for that.
+    final int numberOfHeaders = sticky != null ? 1 : 0;
+    event.setItemCount(event.getItemCount() - numberOfHeaders);
+    event.setFromIndex(Math.max(event.getFromIndex() - numberOfHeaders, 0));
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
+      event.setToIndex(Math.max(event.getToIndex() - numberOfHeaders, 0));
     }
+  }
 }