FloatingHeaderHandler refactored into custom view FloatingHeaderView. (3d87ed17) · Commits · e / os / android_packages_apps_Trebuchet

res/layout/all_apps.xml

+2 −2

Original line number	Diff line number	Diff line
		@@ -31,7 +31,7 @@

		<include layout="@layout/all_apps_fast_scroller" />

		<RelativeLayout
		<com.android.launcher3.allapps.FloatingHeaderView
		android:id="@+id/all_apps_header"
		android:layout_width="match_parent"
		android:layout_height="wrap_content"
		@@ -73,7 +73,7 @@
		android:textColor="@color/all_apps_tab_text"
		android:background="?android:attr/selectableItemBackground"/>
		</com.android.launcher3.views.SlidingTabStrip>
		</RelativeLayout>
		</com.android.launcher3.allapps.FloatingHeaderView>

		<!-- Note: we are reusing/repurposing a system attribute for search layout, because of a
		platform bug, which prevents using custom attributes in <include> tag -->

src/com/android/launcher3/allapps/AllAppsContainerView.java

+26 −23

Original line number	Diff line number	Diff line
		@@ -85,8 +85,7 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,
		private SearchUiManager mSearchUiManager;
		private View mSearchContainer;
		private InterceptingViewPager mViewPager;
		private ViewGroup mHeader;
		private FloatingHeaderHandler mFloatingHeaderHandler;
		private FloatingHeaderView mHeader;
		private TabsPagerAdapter mTabsPagerAdapter;

		private SpannableStringBuilder mSearchQueryBuilder = null;
		@@ -234,8 +233,8 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,
		for (int i = 0; i < mAH.length; i++) {
		updatePromiseAppProgress(app, mAH[i].recyclerView);
		}
		if (mFloatingHeaderHandler != null) {
		updatePromiseAppProgress(app, mFloatingHeaderHandler.getContentView());
		if (isHeaderVisible()) {
		updatePromiseAppProgress(app, mHeader.getPredictionRow());
		}
		}

		@@ -286,8 +285,8 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,
		mAH[i].recyclerView.scrollToTop();
		}
		}
		if (mFloatingHeaderHandler != null) {
		mFloatingHeaderHandler.reset();
		if (isHeaderVisible()) {
		mHeader.reset();
		}
		// Reset the search bar and base recycler view after transitioning home
		mSearchUiManager.reset();
		@@ -309,7 +308,6 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,
		});

		mHeader = findViewById(R.id.all_apps_header);
		mFloatingHeaderHandler = new FloatingHeaderHandler(mHeader);
		rebindAdapters(mUsingTabs);

		mSearchContainer = findViewById(R.id.search_container_all_apps);
		@@ -447,7 +445,6 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,
		if (FeatureFlags.ALL_APPS_PREDICTION_ROW_VIEW) {
		setupHeader();
		} else {
		mFloatingHeaderHandler = null;
		mHeader.setVisibility(View.GONE);
		}
		}
		@@ -501,7 +498,7 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,
		@Override
		public void onPageSelected(int pos) {
		tabs.updateTabTextColor(pos);
		mFloatingHeaderHandler.setMainActive(pos == 0);
		mHeader.setMainActive(pos == 0);
		applyTouchDelegate();
		if (mAH[pos].recyclerView != null) {
		mAH[pos].recyclerView.bindFastScrollbar();
		@@ -524,16 +521,18 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,
		}

		public void setPredictedApps(List<ComponentKeyMapper<AppInfo>> apps) {
		if (mFloatingHeaderHandler != null) {
		mFloatingHeaderHandler.getContentView().setPredictedApps(apps);
		if (isHeaderVisible()) {
		mHeader.getPredictionRow().setPredictedApps(apps);
		}
		mAH[AdapterHolder.MAIN].appsList.setPredictedApps(apps);
		boolean hasPredictions = !apps.isEmpty();
		if (mHasPredictions != hasPredictions) {
		mHasPredictions = hasPredictions;
		if (FeatureFlags.ALL_APPS_PREDICTION_ROW_VIEW) {
		setupHeader();
		}
		}
		}

		public AppInfo findApp(ComponentKeyMapper<AppInfo> mapper) {
		return mapper.getItem(mComponentToAppMap);
		@@ -547,12 +546,12 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,
		return mUsingTabs;
		}

		public FloatingHeaderHandler getFloatingHeaderHandler() {
		return mFloatingHeaderHandler;
		public FloatingHeaderView getFloatingHeaderView() {
		return mHeader;
		}

		private void setupHeader() {
		if (mFloatingHeaderHandler == null) {
		if (mHeader == null) {
		return;
		}
		mHeader.setVisibility(View.VISIBLE);
		@@ -565,8 +564,8 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,
		}
		AllAppsRecyclerView mainRV = mAH[AdapterHolder.MAIN].recyclerView;
		AllAppsRecyclerView workRV = mAH[AdapterHolder.WORK].recyclerView;
		mFloatingHeaderHandler.setup(mainRV, workRV, contentHeight);
		mFloatingHeaderHandler.getContentView().setup(mAH[AdapterHolder.MAIN].adapter,
		mHeader.setup(mainRV, workRV, contentHeight);
		mHeader.getPredictionRow().setup(mAH[AdapterHolder.MAIN].adapter,
		mComponentToAppMap, mNumPredictedAppsPerRow);

		int padding = contentHeight;
		@@ -584,7 +583,7 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,
		mAH[i].adapter.setLastSearchQuery(query);
		}
		boolean hasQuery = !TextUtils.isEmpty(query);
		if (mFloatingHeaderHandler != null && mUsingTabs && hasQuery) {
		if (mUsingTabs && hasQuery) {
		mSearchModeWhileUsingTabs = true;
		rebindAdapters(false); // hide tabs
		} else if (mSearchModeWhileUsingTabs && !hasQuery) {
		@@ -630,12 +629,16 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,

		public List<AppInfo> getPredictedApps() {
		if (mUsingTabs) {
		return mFloatingHeaderHandler.getContentView().getPredictedApps();
		return mHeader.getPredictionRow().getPredictedApps();
		} else {
		return mAH[AdapterHolder.MAIN].appsList.getPredictedApps();
		}
		}

		private boolean isHeaderVisible() {
		return mHeader != null && mHeader.getVisibility() == View.VISIBLE;
		}

		public class AdapterHolder {
		public static final int MAIN = 0;
		public static final int WORK = 1;
		@@ -685,8 +688,8 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,
		? paddingTopForTabs : padding.top;
		recyclerView.setPadding(padding.left, paddingTop, padding.right, padding.bottom);
		}
		if (mFloatingHeaderHandler != null) {
		mFloatingHeaderHandler.getContentView()
		if (isHeaderVisible()) {
		mHeader.getPredictionRow()
		.setPadding(padding.left, 0 , padding.right, 0);
		}
		}
		@@ -698,8 +701,8 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,
		}
		adapter.setNumAppsPerRow(mNumAppsPerRow);
		appsList.setNumAppsPerRow(mNumAppsPerRow, mNumPredictedAppsPerRow);
		if (mFloatingHeaderHandler != null) {
		mFloatingHeaderHandler.getContentView()
		if (isHeaderVisible()) {
		mHeader.getPredictionRow()
		.setNumAppsPerRow(mNumPredictedAppsPerRow);
		}
		}

src/com/android/launcher3/allapps/FloatingHeaderHandler.java→src/com/android/launcher3/allapps/FloatingHeaderView.java

+61 −51

Original line number	Diff line number	Diff line
		@@ -15,30 +15,65 @@
		*/
		package com.android.launcher3.allapps;


		import android.animation.ValueAnimator;
		import android.content.Context;
		import android.content.res.Resources;
		import android.graphics.Rect;
		import android.support.annotation.NonNull;
		import android.support.annotation.Nullable;
		import android.support.v7.widget.RecyclerView;
		import android.util.AttributeSet;
		import android.view.View;
		import android.view.ViewGroup;
		import android.widget.RelativeLayout;

		import com.android.launcher3.R;

		public class FloatingHeaderHandler extends RecyclerView.OnScrollListener
		implements ValueAnimator.AnimatorUpdateListener {
		public class FloatingHeaderView extends RelativeLayout implements
		ValueAnimator.AnimatorUpdateListener {

		private static final boolean SHOW_PREDICTIONS_ONLY_ON_TOP = true;

		private final View mHeaderView;
		private final PredictionRowView mPredictionRow;
		private final ViewGroup mTabLayout;
		private final View mDivider;
		private final Rect mClip = new Rect(0, 0, Integer.MAX_VALUE, Integer.MAX_VALUE);
		private final ValueAnimator mAnimator = ValueAnimator.ofInt(0, 0);
		private final RecyclerView.OnScrollListener mOnScrollListener = new RecyclerView.OnScrollListener() {
		@Override
		public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
		if (SHOW_PREDICTIONS_ONLY_ON_TOP) {
		return;
		}
		if (!mTopOnlyMode && newState == RecyclerView.SCROLL_STATE_IDLE
		&& mTranslationY != -mMaxTranslation && mTranslationY != 0) {
		float scroll = Math.abs(getCurrentScroll());
		boolean expand = scroll > mMaxTranslation
		? Math.abs(mTranslationY) < mMaxTranslation / 2 : true;
		setExpanded(expand);
		}
		}

		@Override
		public void onScrolled(RecyclerView rv, int dx, int dy) {
		boolean isMainRV = rv == mMainRV;
		if (isMainRV != mMainRVActive) {
		return;
		}

		if (mAnimator.isStarted()) {
		mAnimator.cancel();
		}

		int current = - (isMainRV
		? mMainRV.getCurrentScrollY()
		: mWorkRV.getCurrentScrollY());
		moved(current);
		apply();
		}
		};

		private PredictionRowView mPredictionRow;
		private ViewGroup mTabLayout;
		private View mDivider;
		private AllAppsRecyclerView mMainRV;
		private AllAppsRecyclerView mWorkRV;
		private boolean mTopOnlyMode;
		@@ -50,11 +85,20 @@ public class FloatingHeaderHandler extends RecyclerView.OnScrollListener
		private int mWorkScrolledY;
		private boolean mMainRVActive;

		public FloatingHeaderHandler(@NonNull ViewGroup header) {
		mHeaderView = header;
		mTabLayout = header.findViewById(R.id.tabs);
		mDivider = header.findViewById(R.id.divider);
		mPredictionRow = header.findViewById(R.id.header_content);
		public FloatingHeaderView(@NonNull Context context) {
		this(context, null);
		}

		public FloatingHeaderView(@NonNull Context context, @Nullable AttributeSet attrs) {
		super(context, attrs);
		}

		@Override
		protected void onFinishInflate() {
		super.onFinishInflate();
		mTabLayout = findViewById(R.id.tabs);
		mDivider = findViewById(R.id.divider);
		mPredictionRow = findViewById(R.id.header_content);
		}

		public void setup(@NonNull AllAppsRecyclerView personalRV, @Nullable AllAppsRecyclerView workRV,
		@@ -71,13 +115,13 @@ public class FloatingHeaderHandler extends RecyclerView.OnScrollListener

		private AllAppsRecyclerView setupRV(AllAppsRecyclerView old, AllAppsRecyclerView updated) {
		if (old != updated && updated != null ) {
		updated.addOnScrollListener(this);
		updated.addOnScrollListener(mOnScrollListener);
		}
		return updated;
		}

		private void setupDivider() {
		Resources res = mHeaderView.getResources();
		Resources res = getResources();
		int verticalGap = res.getDimensionPixelSize(R.dimen.all_apps_divider_margin_vertical);
		int sideGap = res.getDimensionPixelSize(R.dimen.dynamic_grid_edge_margin);
		mDivider.setPadding(sideGap, verticalGap,sideGap, mTopOnlyMode ? verticalGap : 0);
		@@ -93,11 +137,7 @@ public class FloatingHeaderHandler extends RecyclerView.OnScrollListener
		setExpanded(true);
		}

		public View getHeaderView() {
		return mHeaderView;
		}

		public PredictionRowView getContentView() {
		public PredictionRowView getPredictionRow() {
		return mPredictionRow;
		}

		@@ -109,24 +149,6 @@ public class FloatingHeaderHandler extends RecyclerView.OnScrollListener
		return mDivider;
		}

		@Override
		public void onScrolled(RecyclerView rv, int dx, int dy) {
		boolean isMainRV = rv == mMainRV;
		if (isMainRV != mMainRVActive) {
		return;
		}

		if (mAnimator.isStarted()) {
		mAnimator.cancel();
		}

		int current = - (isMainRV
		? mMainRV.getCurrentScrollY()
		: mWorkRV.getCurrentScrollY());
		moved(current);
		apply();
		}

		public void reset() {
		mMainScrolledY = 0;
		mWorkScrolledY = 0;
		@@ -182,20 +204,6 @@ public class FloatingHeaderHandler extends RecyclerView.OnScrollListener
		}
		}

		@Override
		public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
		if (SHOW_PREDICTIONS_ONLY_ON_TOP) {
		return;
		}
		if (!mTopOnlyMode && newState == RecyclerView.SCROLL_STATE_IDLE
		&& mTranslationY != -mMaxTranslation && mTranslationY != 0) {
		float scroll = Math.abs(getCurrentScroll());
		boolean expand = scroll > mMaxTranslation
		? Math.abs(mTranslationY) < mMaxTranslation / 2 : true;
		setExpanded(expand);
		}
		}

		private void setExpanded(boolean expand) {
		int translateTo = expand ? 0 : -mMaxTranslation;
		mAnimator.setIntValues(mTranslationY, translateTo);
		@@ -221,3 +229,5 @@ public class FloatingHeaderHandler extends RecyclerView.OnScrollListener
		}

		}