am d462d3a9: Scroll to top of raw_contact on expansion (8c92be0f) · Commits · e / os / android_packages_apps_Contacts

src/com/android/contacts/editor/BaseRawContactEditorView.java

+8 −0

Original line number	Diff line number	Diff line
		@@ -153,6 +153,14 @@ public abstract class BaseRawContactEditorView extends LinearLayout {
		if (!isCollapsed) {
		EditorAnimator.getInstance().slideAndFadeIn(mCollapsibleSection,
		startingHeight);
		// We want to place the focus near the top of the screen now that a
		// potentially focused editor is being collapsed.
		EditorAnimator.placeFocusAtTopOfScreenAfterReLayout(mCollapsibleSection);
		} else {
		// When expanding we should scroll the expanded view onto the screen.
		// Otherwise, user's may not notice that any expansion happened.
		EditorAnimator.getInstance().scrollViewToTop(mAccountHeaderContainer);
		mCollapsibleSection.requestFocus();
		}
		if (mListener != null) {
		mListener.onEditorExpansionChanged();

src/com/android/contacts/editor/EditorAnimator.java

+52 −0

Original line number	Diff line number	Diff line
		@@ -25,6 +25,7 @@ import android.view.View;
		import android.view.ViewGroup;
		import android.view.ViewParent;
		import android.widget.LinearLayout;
		import android.widget.ScrollView;

		import com.android.contacts.util.SchedulingUtils;
		import com.google.common.collect.Lists;
		@@ -144,6 +145,57 @@ public class EditorAnimator {
		});
		}

		/**
		* Smoothly scroll {@param targetView}'s parent ScrollView to the top of {@param targetView}.
		*/
		public void scrollViewToTop(final View targetView) {
		final ScrollView scrollView = getParentScrollView(targetView);
		SchedulingUtils.doAfterLayout(scrollView, new Runnable() {
		@Override
		public void run() {
		ScrollView scrollView = getParentScrollView(targetView);
		scrollView.smoothScrollTo(0, offsetFromTopOfViewGroup(targetView, scrollView)
		+ scrollView.getScrollY());
		}
		});
		// Clear the focused element so it doesn't interfere with scrolling.
		View view = scrollView.findFocus();
		if (view != null) {
		view.clearFocus();
		}
		}

		public static void placeFocusAtTopOfScreenAfterReLayout(final View view) {
		// In order for the focus to be placed at the top of the Window, we need
		// to wait for layout. Otherwise we don't know where the top of the screen is.
		SchedulingUtils.doAfterLayout(view, new Runnable() {
		@Override
		public void run() {
		EditorAnimator.getParentScrollView(view).clearFocus();
		}
		});
		}

		private int offsetFromTopOfViewGroup(View view, ViewGroup viewGroup) {
		int viewLocation[] = new int[2];
		int viewGroupLocation[] = new int[2];
		viewGroup.getLocationOnScreen(viewGroupLocation);
		view.getLocationOnScreen(viewLocation);
		return viewLocation[1] - viewGroupLocation[1];
		}

		private static ScrollView getParentScrollView(View view) {
		while (true) {
		ViewParent parent = view.getParent();
		if (parent instanceof ScrollView)
		return (ScrollView) parent;
		if (!(parent instanceof View))
		throw new IllegalArgumentException(
		"The editor should be contained inside a ScrollView.");
		view = (View) parent;
		}
		}

		/**
		* Creates a translation-animation for the given views
		*/