Moving all apps code into sub package.

- Renaming resources, dimens, etc to be more consistent
- Removing old AppsCustomize resources and other unused code

Change-Id: I15ce35e7cb7a9b9344fc7103963e4e4c9e45d89a

1 files changed, 1018 insertions, 0 deletions

diff --git a/src/com/android/launcher3/allapps/AllAppsContainerView.java b/src/com/android/launcher3/allapps/AllAppsContainerView.java
new file mode 100644
index 000000000..60f9ab347
--- /dev/null
+++ b/src/com/android/launcher3/allapps/AllAppsContainerView.java
@@ -0,0 +1,1018 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.allapps;
+
+import android.annotation.SuppressLint;
+import android.annotation.TargetApi;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.Point;
+import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
+import android.graphics.drawable.GradientDrawable;
+import android.graphics.drawable.InsetDrawable;
+import android.os.Build;
+import android.support.v7.widget.RecyclerView;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.util.AttributeSet;
+import android.view.KeyEvent;
+import android.view.LayoutInflater;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewConfiguration;
+import android.view.ViewGroup;
+import android.view.ViewTreeObserver;
+import android.view.inputmethod.EditorInfo;
+import android.view.inputmethod.InputMethodManager;
+import android.widget.FrameLayout;
+import android.widget.TextView;
+import com.android.launcher3.AppInfo;
+import com.android.launcher3.BaseContainerView;
+import com.android.launcher3.BubbleTextView;
+import com.android.launcher3.CellLayout;
+import com.android.launcher3.CheckLongPressHelper;
+import com.android.launcher3.DeleteDropTarget;
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.DragSource;
+import com.android.launcher3.DropTarget;
+import com.android.launcher3.Folder;
+import com.android.launcher3.Insettable;
+import com.android.launcher3.ItemInfo;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherAppState;
+import com.android.launcher3.LauncherTransitionable;
+import com.android.launcher3.R;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.Workspace;
+import com.android.launcher3.util.Thunk;
+
+import java.util.List;
+import java.util.regex.Pattern;
+
+
+/**
+ * Interface for controlling the header elevation in response to RecyclerView scroll.
+ */
+interface HeaderElevationController {
+    void onScroll(int scrollY);
+    void updateBackgroundPadding(Drawable bg);
+    void disable();
+}
+
+/**
+ * Implementation of the header elevation mechanism for pre-L devices.  It simulates elevation
+ * by drawing a gradient under the header bar.
+ */
+final class HeaderElevationControllerV16 implements HeaderElevationController {
+
+    private final View mShadow;
+    private final float mScrollToElevation;
+    private final Rect mTmpRect = new Rect();
+
+    public HeaderElevationControllerV16(View header) {
+        Resources res = header.getContext().getResources();
+        mScrollToElevation = res.getDimension(R.dimen.all_apps_header_scroll_to_elevation);
+
+        mShadow = new View(header.getContext());
+        mShadow.setBackground(new GradientDrawable(
+                GradientDrawable.Orientation.TOP_BOTTOM, new int[] {0x44000000, 0x00000000}));
+        mShadow.setAlpha(0);
+
+        FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(
+                FrameLayout.LayoutParams.MATCH_PARENT,
+                res.getDimensionPixelSize(R.dimen.all_apps_header_shadow_height));
+        lp.topMargin = ((FrameLayout.LayoutParams) header.getLayoutParams()).height;
+
+        ((ViewGroup) header.getParent()).addView(mShadow, lp);
+    }
+
+    @Override
+    public void onScroll(int scrollY) {
+        float elevationPct = (float) Math.min(scrollY, mScrollToElevation) /
+                mScrollToElevation;
+        mShadow.setAlpha(elevationPct);
+    }
+
+    @Override
+    public void updateBackgroundPadding(Drawable bg) {
+        bg.getPadding(mTmpRect);
+        FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mShadow.getLayoutParams();
+        lp.leftMargin = mTmpRect.left;
+        lp.rightMargin = mTmpRect.right;
+        mShadow.requestLayout();
+    }
+
+    @Override
+    public void disable() {
+        ViewGroup parent = (ViewGroup) mShadow.getParent();
+        if (parent != null) {
+            parent.removeView(mShadow);
+        }
+    }
+}
+
+/**
+ * Implementation of the header elevation mechanism for L+ devices, which makes use of the native
+ * view elevation.
+ */
+@TargetApi(Build.VERSION_CODES.LOLLIPOP)
+final class HeaderElevationControllerVL implements HeaderElevationController {
+
+    private final View mHeader;
+    private final float mMaxElevation;
+    private final float mScrollToElevation;
+
+    public HeaderElevationControllerVL(View header) {
+        mHeader = header;
+
+        Resources res = header.getContext().getResources();
+        mMaxElevation = res.getDimension(R.dimen.all_apps_header_max_elevation);
+        mScrollToElevation = res.getDimension(R.dimen.all_apps_header_scroll_to_elevation);
+    }
+
+    @Override
+    public void onScroll(int scrollY) {
+        float elevationPct = (float) Math.min(scrollY, mScrollToElevation) /
+                mScrollToElevation;
+        float newElevation = mMaxElevation * elevationPct;
+        if (Float.compare(mHeader.getElevation(), newElevation) != 0) {
+            mHeader.setElevation(newElevation);
+        }
+    }
+
+    @Override
+    public void updateBackgroundPadding(Drawable bg) {
+        // Do nothing, the background padding on the header view is already applied
+    }
+
+    @Override
+    public void disable() { }
+}
+
+/**
+ * The all apps view container.
+ */
+public class AllAppsContainerView extends BaseContainerView implements DragSource, Insettable,
+        TextWatcher, TextView.OnEditorActionListener, LauncherTransitionable,
+        AlphabeticalAppsList.AdapterChangedCallback, AllAppsGridAdapter.PredictionBarSpacerCallbacks,
+        View.OnTouchListener, View.OnClickListener, View.OnLongClickListener,
+        ViewTreeObserver.OnPreDrawListener {
+
+    public static final boolean GRID_MERGE_SECTIONS = true;
+
+    private static final boolean ALLOW_SINGLE_APP_LAUNCH = true;
+    private static final boolean DYNAMIC_HEADER_ELEVATION = true;
+    private static final boolean DISMISS_SEARCH_ON_BACK = true;
+
+    private static final int FADE_IN_DURATION = 175;
+    private static final int FADE_OUT_DURATION = 100;
+    private static final int SEARCH_TRANSLATION_X_DP = 18;
+
+    private static final Pattern SPLIT_PATTERN = Pattern.compile("[\\s|\\p{javaSpaceChar}]+");
+
+    @Thunk Launcher mLauncher;
+    @Thunk AlphabeticalAppsList mApps;
+    private LayoutInflater mLayoutInflater;
+    private AllAppsGridAdapter mAdapter;
+    private RecyclerView.LayoutManager mLayoutManager;
+    private RecyclerView.ItemDecoration mItemDecoration;
+
+    private FrameLayout mContentView;
+    @Thunk AllAppsRecyclerView mAppsRecyclerView;
+    private ViewGroup mPredictionBarView;
+    private View mHeaderView;
+    private View mSearchBarContainerView;
+    private View mSearchButtonView;
+    private View mDismissSearchButtonView;
+    private AllAppsSearchEditView mSearchBarEditView;
+
+    private HeaderElevationController mElevationController;
+
+    private int mNumAppsPerRow;
+    private int mNumPredictedAppsPerRow;
+    // This coordinate is relative to this container view
+    private final Point mBoundsCheckLastTouchDownPos = new Point(-1, -1);
+    // This coordinate is relative to its parent
+    private final Point mIconLastTouchPos = new Point();
+    // This coordinate is used to proxy click and long-click events to the prediction bar icons
+    private final Point mPredictionIconTouchDownPos = new Point();
+    private int mContentMarginStart;
+    // Normal container insets
+    private int mContainerInset;
+    private int mPredictionBarHeight;
+    private int mLastRecyclerViewScrollPos = -1;
+    private boolean mFocusPredictionBarOnFirstBind;
+
+    private CheckLongPressHelper mPredictionIconCheckForLongPress;
+    private View mPredictionIconUnderTouch;
+
+    public AllAppsContainerView(Context context) {
+        this(context, null);
+    }
+
+    public AllAppsContainerView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public AllAppsContainerView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        LauncherAppState app = LauncherAppState.getInstance();
+        Resources res = context.getResources();
+
+        mLauncher = (Launcher) context;
+        DeviceProfile grid = mLauncher.getDeviceProfile();
+
+        mContainerInset = context.getResources().getDimensionPixelSize(
+                R.dimen.all_apps_container_inset);
+        mPredictionBarHeight = grid.allAppsIconSizePx + grid.iconDrawablePaddingOriginalPx +
+                grid.allAppsIconTextSizePx +
+                2 * res.getDimensionPixelSize(R.dimen.all_apps_prediction_icon_top_bottom_padding);
+
+        mLayoutInflater = LayoutInflater.from(context);
+
+        mNumAppsPerRow = grid.allAppsNumCols;
+        mNumPredictedAppsPerRow = grid.allAppsNumPredictiveCols;
+        mApps = new AlphabeticalAppsList(context, mNumAppsPerRow, mNumPredictedAppsPerRow);
+        mApps.setAdapterChangedCallback(this);
+        mAdapter = new AllAppsGridAdapter(context, mApps, mNumAppsPerRow, this, this, mLauncher, this);
+        mAdapter.setEmptySearchText(res.getString(R.string.all_apps_loading_message));
+        mAdapter.setNumAppsPerRow(mNumAppsPerRow);
+        mAdapter.setPredictionRowHeight(mPredictionBarHeight);
+        mLayoutManager = mAdapter.getLayoutManager();
+        mItemDecoration = mAdapter.getItemDecoration();
+        mContentMarginStart = mAdapter.getContentMarginStart();
+
+        mApps.setAdapter(mAdapter);
+    }
+
+    /**
+     * Sets the current set of predicted apps.
+     */
+    public void setPredictedApps(List<ComponentName> apps) {
+        mApps.setPredictedApps(apps);
+    }
+
+    /**
+     * Sets the current set of apps.
+     */
+    public void setApps(List<AppInfo> apps) {
+        mApps.setApps(apps);
+    }
+
+    /**
+     * Adds new apps to the list.
+     */
+    public void addApps(List<AppInfo> apps) {
+        mApps.addApps(apps);
+    }
+
+    /**
+     * Updates existing apps in the list
+     */
+    public void updateApps(List<AppInfo> apps) {
+        mApps.updateApps(apps);
+    }
+
+    /**
+     * Removes some apps from the list.
+     */
+    public void removeApps(List<AppInfo> apps) {
+        mApps.removeApps(apps);
+    }
+
+    /**
+     * Hides the header bar
+     */
+    public void hideHeaderBar() {
+        mHeaderView.setVisibility(View.GONE);
+        mElevationController.disable();
+        onUpdateBackgrounds();
+        onUpdatePaddings();
+    }
+
+    /**
+     * Scrolls this list view to the top.
+     */
+    public void scrollToTop() {
+        mAppsRecyclerView.scrollToTop();
+    }
+
+    /**
+     * Returns the content view used for the launcher transitions.
+     */
+    public View getContentView() {
+        return mContentView;
+    }
+
+    /**
+     * Returns the reveal view used for the launcher transitions.
+     */
+    public View getRevealView() {
+        return findViewById(R.id.apps_view_transition_overlay);
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        boolean isRtl = Utilities.isRtl(getResources());
+        mAdapter.setRtl(isRtl);
+
+        // Work around the search box getting first focus and showing the cursor by
+        // proxying the focus from the content view to the recycler view directly
+        mContentView = (FrameLayout) findViewById(R.id.apps_list);
+        mContentView.setOnFocusChangeListener(new View.OnFocusChangeListener() {
+            @Override
+            public void onFocusChange(View v, boolean hasFocus) {
+                if (v == mContentView && hasFocus) {
+                    if (!mApps.getPredictedApps().isEmpty()) {
+                        // If the prediction bar is going to be bound, then defer focusing until
+                        // it is first bound
+                        if (mPredictionBarView.getChildCount() == 0) {
+                            mFocusPredictionBarOnFirstBind = true;
+                        } else {
+                            mPredictionBarView.requestFocus();
+                        }
+                    } else {
+                        mAppsRecyclerView.requestFocus();
+                    }
+                }
+            }
+        });
+
+        // Fix the header view elevation if not dynamically calculating it
+        mHeaderView = findViewById(R.id.header);
+        mHeaderView.setOnClickListener(this);
+
+        mElevationController = Utilities.isLmpOrAbove() ?
+                new HeaderElevationControllerVL(mHeaderView) :
+                    new HeaderElevationControllerV16(mHeaderView);
+        if (!DYNAMIC_HEADER_ELEVATION) {
+            mElevationController.onScroll(getResources()
+                    .getDimensionPixelSize(R.dimen.all_apps_header_scroll_to_elevation));
+        }
+
+        // Fix the prediction bar size
+        mPredictionBarView = (ViewGroup) findViewById(R.id.prediction_bar);
+        FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mPredictionBarView.getLayoutParams();
+        lp.height = mPredictionBarHeight;
+
+        mSearchButtonView = mHeaderView.findViewById(R.id.search_button);
+        mSearchBarContainerView = findViewById(R.id.app_search_container);
+        mDismissSearchButtonView = mSearchBarContainerView.findViewById(R.id.dismiss_search_button);
+        mDismissSearchButtonView.setOnClickListener(this);
+        mSearchBarEditView = (AllAppsSearchEditView) findViewById(R.id.apps_search_box);
+        if (mSearchBarEditView != null) {
+            mSearchBarEditView.addTextChangedListener(this);
+            mSearchBarEditView.setOnEditorActionListener(this);
+            if (DISMISS_SEARCH_ON_BACK) {
+                mSearchBarEditView.setOnBackKeyListener(
+                        new AllAppsSearchEditView.OnBackKeyListener() {
+                            @Override
+                            public void onBackKey() {
+                                // Only hide the search field if there is no query, or if there
+                                // are no filtered results
+                                String query = Utilities.trim(
+                                        mSearchBarEditView.getEditableText().toString());
+                                if (query.isEmpty() || mApps.hasNoFilteredResults()) {
+                                    hideSearchField(true, true);
+                                }
+                            }
+                        });
+            }
+        }
+        mAppsRecyclerView = (AllAppsRecyclerView) findViewById(R.id.apps_list_view);
+        mAppsRecyclerView.setApps(mApps);
+        mAppsRecyclerView.setNumAppsPerRow(mNumAppsPerRow, mNumPredictedAppsPerRow);
+        mAppsRecyclerView.setPredictionBarHeight(mPredictionBarHeight);
+        mAppsRecyclerView.setLayoutManager(mLayoutManager);
+        mAppsRecyclerView.setAdapter(mAdapter);
+        mAppsRecyclerView.setHasFixedSize(true);
+        if (mItemDecoration != null) {
+            mAppsRecyclerView.addItemDecoration(mItemDecoration);
+        }
+        onUpdateBackgrounds();
+        onUpdatePaddings();
+    }
+
+    @Override
+    public void onBindPredictionBar() {
+        updatePredictionBarVisibility();
+
+        List<AppInfo> predictedApps = mApps.getPredictedApps();
+        int childCount = mPredictionBarView.getChildCount();
+        for (int i = 0; i < mNumPredictedAppsPerRow; i++) {
+            BubbleTextView icon;
+            if (i < childCount) {
+                // If a child at that index exists, then get that child
+                icon = (BubbleTextView) mPredictionBarView.getChildAt(i);
+            } else {
+                // Otherwise, inflate a new icon
+                icon = (BubbleTextView) mLayoutInflater.inflate(
+                        R.layout.all_apps_prediction_bar_icon, mPredictionBarView, false);
+                icon.setFocusable(true);
+                mPredictionBarView.addView(icon);
+            }
+
+            // Either apply the app info to the child, or hide the view
+            if (i < predictedApps.size()) {
+                if (icon.getVisibility() != View.VISIBLE) {
+                    icon.setVisibility(View.VISIBLE);
+                }
+                icon.applyFromApplicationInfo(predictedApps.get(i));
+            } else {
+                icon.setVisibility(View.INVISIBLE);
+            }
+        }
+
+        if (mFocusPredictionBarOnFirstBind) {
+            mFocusPredictionBarOnFirstBind = false;
+            mPredictionBarView.requestFocus();
+        }
+    }
+
+    @Override
+    protected void onFixedBoundsUpdated() {
+        // Update the number of items in the grid
+        LauncherAppState app = LauncherAppState.getInstance();
+        DeviceProfile grid = mLauncher.getDeviceProfile();
+        if (grid.updateAppsViewNumCols(getContext().getResources(), mFixedBounds.width())) {
+            mNumAppsPerRow = grid.allAppsNumCols;
+            mNumPredictedAppsPerRow = grid.allAppsNumPredictiveCols;
+            mAppsRecyclerView.setNumAppsPerRow(mNumAppsPerRow, mNumPredictedAppsPerRow);
+            mAdapter.setNumAppsPerRow(mNumAppsPerRow);
+            mApps.setNumAppsPerRow(mNumAppsPerRow, mNumPredictedAppsPerRow);
+        }
+    }
+
+    /**
+     * Update the padding of the Apps view and children.  To ensure that the RecyclerView has the
+     * full width to handle touches right to the edge of the screen, we only apply the top and
+     * bottom padding to the AppsContainerView and then the left/right padding on the RecyclerView
+     * itself.  In particular, the left/right padding is applied to the background of the view,
+     * and then additionally inset by the start margin.
+     */
+    @Override
+    protected void onUpdatePaddings() {
+        boolean isRtl = Utilities.isRtl(getResources());
+        boolean hasSearchBar = (mSearchBarEditView != null) &&
+                (mSearchBarEditView.getVisibility() == View.VISIBLE);
+
+        // Set the background on the container, but let the recyclerView extend the full screen,
+        // so that the fast-scroller works on the edge as well.
+        mContentView.setPadding(0, 0, 0, 0);
+
+        if (mFixedBounds.isEmpty()) {
+            // If there are no fixed bounds, then use the default padding and insets
+            setPadding(mInsets.left, mContainerInset + mInsets.top, mInsets.right,
+                    mContainerInset + mInsets.bottom);
+        } else {
+            // If there are fixed bounds, then we update the padding to reflect the fixed bounds.
+            setPadding(mFixedBounds.left, mFixedBounds.top, getMeasuredWidth() - mFixedBounds.right,
+                    mFixedBounds.bottom);
+        }
+
+        // Update the apps recycler view, inset it by the container inset as well
+        DeviceProfile grid = mLauncher.getDeviceProfile();
+        int startMargin = grid.isPhone ? mContentMarginStart : 0;
+        int inset = mFixedBounds.isEmpty() ? mContainerInset : mFixedBoundsContainerInset;
+        if (isRtl) {
+            mAppsRecyclerView.setPadding(inset + mAppsRecyclerView.getScrollbarWidth(), inset,
+                    inset + startMargin, inset);
+        } else {
+            mAppsRecyclerView.setPadding(inset + startMargin, inset,
+                    inset + mAppsRecyclerView.getScrollbarWidth(), inset);
+        }
+
+        // Update the header bar
+        if (hasSearchBar) {
+            FrameLayout.LayoutParams lp =
+                    (FrameLayout.LayoutParams) mHeaderView.getLayoutParams();
+            lp.leftMargin = lp.rightMargin = inset;
+            mHeaderView.requestLayout();
+        }
+
+        FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mPredictionBarView.getLayoutParams();
+        lp.leftMargin = inset + mAppsRecyclerView.getScrollbarWidth();
+        lp.rightMargin = inset + mAppsRecyclerView.getScrollbarWidth();
+        mPredictionBarView.requestLayout();
+    }
+
+    /**
+     * Update the background of the Apps view and children.
+     */
+    @Override
+    protected void onUpdateBackgrounds() {
+        int inset = mFixedBounds.isEmpty() ? mContainerInset : mFixedBoundsContainerInset;
+
+        // Update the background of the reveal view and list to be inset with the fixed bound
+        // insets instead of the default insets
+        // TODO: Use quantum_panel instead of quantum_panel_shape.
+        InsetDrawable background = new InsetDrawable(
+                getContext().getResources().getDrawable(R.drawable.quantum_panel_shape),
+                inset, 0, inset, 0);
+        mContentView.setBackground(background);
+        mAppsRecyclerView.updateBackgroundPadding(background);
+        mAdapter.updateBackgroundPadding(background);
+        mElevationController.updateBackgroundPadding(background);
+        getRevealView().setBackground(background.getConstantState().newDrawable());
+    }
+
+    @Override
+    public boolean onPreDraw() {
+        synchronizeToRecyclerViewScrollPosition(mAppsRecyclerView.getScrollPosition());
+        return true;
+    }
+
+    @Override
+    public boolean onInterceptTouchEvent(MotionEvent ev) {
+        return handleTouchEvent(ev);
+    }
+
+    @SuppressLint("ClickableViewAccessibility")
+    @Override
+    public boolean onTouchEvent(MotionEvent ev) {
+        return handleTouchEvent(ev);
+    }
+
+    @SuppressLint("ClickableViewAccessibility")
+    @Override
+    public boolean onTouch(View v, MotionEvent ev) {
+        switch (ev.getAction()) {
+            case MotionEvent.ACTION_DOWN:
+            case MotionEvent.ACTION_MOVE:
+                mIconLastTouchPos.set((int) ev.getX(), (int) ev.getY());
+                break;
+        }
+        return false;
+    }
+
+    @Override
+    public void onClick(View v) {
+        if (v == mHeaderView) {
+            showSearchField();
+        } else if (v == mDismissSearchButtonView) {
+            hideSearchField(true, true);
+        }
+    }
+
+    @Override
+    public boolean onLongClick(View v) {
+        // Return early if this is not initiated from a touch
+        if (!v.isInTouchMode()) return false;
+        // When we have exited all apps or are in transition, disregard long clicks
+        if (!mLauncher.isAppsViewVisible() ||
+                mLauncher.getWorkspace().isSwitchingState()) return false;
+        // Return if global dragging is not enabled
+        if (!mLauncher.isDraggingEnabled()) return false;
+
+        // Start the drag
+        mLauncher.getWorkspace().beginDragShared(v, mIconLastTouchPos, this, false);
+        // Enter spring loaded mode
+        mLauncher.enterSpringLoadedDragMode();
+
+        return false;
+    }
+
+    @Override
+    public boolean supportsFlingToDelete() {
+        return true;
+    }
+
+    @Override
+    public boolean supportsAppInfoDropTarget() {
+        return true;
+    }
+
+    @Override
+    public boolean supportsDeleteDropTarget() {
+        return false;
+    }
+
+    @Override
+    public float getIntrinsicIconScaleFactor() {
+        DeviceProfile grid = mLauncher.getDeviceProfile();
+        return (float) grid.allAppsIconSizePx / grid.iconSizePx;
+    }
+
+    @Override
+    public void onFlingToDeleteCompleted() {
+        // We just dismiss the drag when we fling, so cleanup here
+        mLauncher.exitSpringLoadedDragModeDelayed(true,
+                Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null);
+        mLauncher.unlockScreenOrientation(false);
+    }
+
+    @Override
+    public void onDropCompleted(View target, DropTarget.DragObject d, boolean isFlingToDelete,
+            boolean success) {
+        if (isFlingToDelete || !success || (target != mLauncher.getWorkspace() &&
+                !(target instanceof DeleteDropTarget) && !(target instanceof Folder))) {
+            // Exit spring loaded mode if we have not successfully dropped or have not handled the
+            // drop in Workspace
+            mLauncher.exitSpringLoadedDragModeDelayed(true,
+                    Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null);
+        }
+        mLauncher.unlockScreenOrientation(false);
+
+        // Display an error message if the drag failed due to there not being enough space on the
+        // target layout we were dropping on.
+        if (!success) {
+            boolean showOutOfSpaceMessage = false;
+            if (target instanceof Workspace) {
+                int currentScreen = mLauncher.getCurrentWorkspaceScreen();
+                Workspace workspace = (Workspace) target;
+                CellLayout layout = (CellLayout) workspace.getChildAt(currentScreen);
+                ItemInfo itemInfo = (ItemInfo) d.dragInfo;
+                if (layout != null) {
+                    layout.calculateSpans(itemInfo);
+                    showOutOfSpaceMessage =
+                            !layout.findCellForSpan(null, itemInfo.spanX, itemInfo.spanY);
+                }
+            }
+            if (showOutOfSpaceMessage) {
+                mLauncher.showOutOfSpaceMessage(false);
+            }
+
+            d.deferDragViewCleanupPostAnimation = false;
+        }
+    }
+
+    @Override
+    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+        // Do nothing
+    }
+
+    @Override
+    public void onTextChanged(CharSequence s, int start, int before, int count) {
+        // Do nothing
+    }
+
+    @Override
+    public void afterTextChanged(final Editable s) {
+        String queryText = s.toString();
+        if (queryText.isEmpty()) {
+            mApps.setFilter(null);
+        } else {
+            String formatStr = getResources().getString(R.string.all_apps_no_search_results);
+            mAdapter.setEmptySearchText(String.format(formatStr, queryText));
+
+            // Do an intersection of the words in the query and each title, and filter out all the
+            // apps that don't match all of the words in the query.
+            final String queryTextLower = queryText.toLowerCase();
+            final String[] queryWords = SPLIT_PATTERN.split(queryTextLower);
+            mApps.setFilter(new AlphabeticalAppsList.Filter() {
+                @Override
+                public boolean retainApp(AppInfo info, String sectionName) {
+                    if (sectionName.toLowerCase().contains(queryTextLower)) {
+                        return true;
+                    }
+                    String title = info.title.toString();
+                    String[] words = SPLIT_PATTERN.split(title.toLowerCase());
+                    for (int qi = 0; qi < queryWords.length; qi++) {
+                        boolean foundMatch = false;
+                        for (int i = 0; i < words.length; i++) {
+                            if (words[i].startsWith(queryWords[qi])) {
+                                foundMatch = true;
+                                break;
+                            }
+                        }
+                        if (!foundMatch) {
+                            // If there is a word in the query that does not match any words in this
+                            // title, so skip it.
+                            return false;
+                        }
+                    }
+                    return true;
+                }
+            });
+        }
+        scrollToTop();
+    }
+
+    @Override
+    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
+        if (ALLOW_SINGLE_APP_LAUNCH && actionId == EditorInfo.IME_ACTION_DONE) {
+            // Skip the quick-launch if there isn't exactly one item
+            if (mApps.getSize() != 1) {
+                return false;
+            }
+
+            List<AlphabeticalAppsList.AdapterItem> items = mApps.getAdapterItems();
+            for (int i = 0; i < items.size(); i++) {
+                AlphabeticalAppsList.AdapterItem item = items.get(i);
+                if (item.viewType == AllAppsGridAdapter.ICON_VIEW_TYPE) {
+                    mAppsRecyclerView.getChildAt(i).performClick();
+                    getInputMethodManager().hideSoftInputFromWindow(getWindowToken(), 0);
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public void onAdapterItemsChanged() {
+        updatePredictionBarVisibility();
+    }
+
+    @Override
+    public View getContent() {
+        return null;
+    }
+
+    @Override
+    public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) {
+        // Register for a pre-draw listener to synchronize the recycler view scroll to other views
+        // in this container
+        if (!toWorkspace) {
+            getViewTreeObserver().addOnPreDrawListener(this);
+        }
+    }
+
+    @Override
+    public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) {
+        // Do nothing
+    }
+
+    @Override
+    public void onLauncherTransitionStep(Launcher l, float t) {
+        // Do nothing
+    }
+
+    @Override
+    public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) {
+        if (mSearchBarEditView != null) {
+            if (toWorkspace) {
+                hideSearchField(false, false);
+            }
+        }
+        if (toWorkspace) {
+            getViewTreeObserver().removeOnPreDrawListener(this);
+            mLastRecyclerViewScrollPos = -1;
+        }
+    }
+
+    /**
+     * Updates the container when the recycler view is scrolled.
+     */
+    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
+    private void synchronizeToRecyclerViewScrollPosition(int scrollY) {
+        if (mLastRecyclerViewScrollPos != scrollY) {
+            mLastRecyclerViewScrollPos = scrollY;
+            if (DYNAMIC_HEADER_ELEVATION) {
+                mElevationController.onScroll(scrollY);
+            }
+
+            // Scroll the prediction bar with the contents of the recycler view
+            mPredictionBarView.setTranslationY(-scrollY + mAppsRecyclerView.getPaddingTop());
+        }
+    }
+
+    @Override
+    public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) {
+        // If we were waiting for long-click, cancel the request once a child has started handling
+        // the scrolling
+        if (mPredictionIconCheckForLongPress != null) {
+            mPredictionIconCheckForLongPress.cancelLongPress();
+        }
+        super.requestDisallowInterceptTouchEvent(disallowIntercept);
+    }
+
+    /**
+     * Handles the touch events to dismiss all apps when clicking outside the bounds of the
+     * recycler view.
+     */
+    private boolean handleTouchEvent(MotionEvent ev) {
+        LauncherAppState app = LauncherAppState.getInstance();
+        DeviceProfile grid = mLauncher.getDeviceProfile();
+        int x = (int) ev.getX();
+        int y = (int) ev.getY();
+
+        switch (ev.getAction()) {
+            case MotionEvent.ACTION_DOWN:
+                // We workaround the fact that the recycler view needs the touches for the scroll
+                // and we want to intercept it for clicks in the prediction bar by handling clicks
+                // and long clicks in the prediction bar ourselves.
+                if (mPredictionBarView != null && mPredictionBarView.getVisibility() == View.VISIBLE) {
+                    mPredictionIconTouchDownPos.set(x, y);
+                    mPredictionIconUnderTouch = findPredictedAppAtCoordinate(x, y);
+                    if (mPredictionIconUnderTouch != null) {
+                        mPredictionIconCheckForLongPress =
+                                new CheckLongPressHelper(mPredictionIconUnderTouch, this);
+                        mPredictionIconCheckForLongPress.postCheckForLongPress();
+                    }
+                }
+
+                if (!mFixedBounds.isEmpty()) {
+                    // Outset the fixed bounds and check if the touch is outside all apps
+                    Rect tmpRect = new Rect(mFixedBounds);
+                    tmpRect.inset(-grid.allAppsIconSizePx / 2, 0);
+                    if (ev.getX() < tmpRect.left || ev.getX() > tmpRect.right) {
+                        mBoundsCheckLastTouchDownPos.set(x, y);
+                        return true;
+                    }
+                } else {
+                    // Check if the touch is outside all apps
+                    if (ev.getX() < getPaddingLeft() ||
+                            ev.getX() > (getWidth() - getPaddingRight())) {
+                        mBoundsCheckLastTouchDownPos.set(x, y);
+                        return true;
+                    }
+                }
+                break;
+            case MotionEvent.ACTION_MOVE:
+                if (mPredictionIconUnderTouch != null) {
+                    float dist = (float) Math.hypot(x - mPredictionIconTouchDownPos.x,
+                            y - mPredictionIconTouchDownPos.y);
+                    if (dist > ViewConfiguration.get(getContext()).getScaledTouchSlop()) {
+                        if (mPredictionIconCheckForLongPress != null) {
+                            mPredictionIconCheckForLongPress.cancelLongPress();
+                        }
+                        mPredictionIconCheckForLongPress = null;
+                        mPredictionIconUnderTouch = null;
+                    }
+                }
+                break;
+            case MotionEvent.ACTION_UP:
+                if (mBoundsCheckLastTouchDownPos.x > -1) {
+                    ViewConfiguration viewConfig = ViewConfiguration.get(getContext());
+                    float dx = ev.getX() - mBoundsCheckLastTouchDownPos.x;
+                    float dy = ev.getY() - mBoundsCheckLastTouchDownPos.y;
+                    float distance = (float) Math.hypot(dx, dy);
+                    if (distance < viewConfig.getScaledTouchSlop()) {
+                        // The background was clicked, so just go home
+                        Launcher launcher = (Launcher) getContext();
+                        launcher.showWorkspace(true);
+                        return true;
+                    }
+                }
+
+                // Trigger the click on the prediction bar icon if that's where we touched
+                if (mPredictionIconUnderTouch != null &&
+                        !mPredictionIconCheckForLongPress.hasPerformedLongPress()) {
+                    mLauncher.onClick(mPredictionIconUnderTouch);
+                }
+
+                // Fall through
+            case MotionEvent.ACTION_CANCEL:
+                mBoundsCheckLastTouchDownPos.set(-1, -1);
+                mPredictionIconTouchDownPos.set(-1, -1);
+
+                // On touch up/cancel, cancel the long press on the prediction bar icon if it has
+                // not yet been performed
+                if (mPredictionIconCheckForLongPress != null) {
+                    mPredictionIconCheckForLongPress.cancelLongPress();
+                    mPredictionIconCheckForLongPress = null;
+                }
+                mPredictionIconUnderTouch = null;
+
+                break;
+        }
+        return false;
+    }
+
+    /**
+     * Returns the predicted app in the prediction bar given a set of local coordinates.
+     */
+    private View findPredictedAppAtCoordinate(int x, int y) {
+        Rect hitRect = new Rect();
+
+        // Ensure we aren't hitting the search bar
+        int[] coord = {x, y};
+        Utilities.mapCoordInSelfToDescendent(mHeaderView, this, coord);
+        mHeaderView.getHitRect(hitRect);
+        if (hitRect.contains(coord[0], coord[1])) {
+            return null;
+        }
+
+        // Check against the children of the prediction bar
+        coord[0] = x;
+        coord[1] = y;
+        Utilities.mapCoordInSelfToDescendent(mPredictionBarView, this, coord);
+        for (int i = 0; i < mPredictionBarView.getChildCount(); i++) {
+            View child = mPredictionBarView.getChildAt(i);
+            if (child.getVisibility() != View.VISIBLE) {
+                continue;
+            }
+            child.getHitRect(hitRect);
+            if (hitRect.contains(coord[0], coord[1])) {
+                return child;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Shows the search field.
+     */
+    private void showSearchField() {
+        // Show the search bar and focus the search
+        final int translationX = Utilities.pxFromDp(SEARCH_TRANSLATION_X_DP,
+                getContext().getResources().getDisplayMetrics());
+        mSearchBarContainerView.setVisibility(View.VISIBLE);
+        mSearchBarContainerView.setAlpha(0f);
+        mSearchBarContainerView.setTranslationX(translationX);
+        mSearchBarContainerView.animate()
+                .alpha(1f)
+                .translationX(0)
+                .setDuration(FADE_IN_DURATION)
+                .withLayer()
+                .withEndAction(new Runnable() {
+                    @Override
+                    public void run() {
+                        mSearchBarEditView.requestFocus();
+                        getInputMethodManager().showSoftInput(mSearchBarEditView,
+                                InputMethodManager.SHOW_IMPLICIT);
+                    }
+                });
+        mSearchButtonView.animate()
+                .alpha(0f)
+                .translationX(-translationX)
+                .setDuration(FADE_OUT_DURATION)
+                .withLayer();
+    }
+
+    /**
+     * Hides the search field.
+     */
+    private void hideSearchField(boolean animated, final boolean returnFocusToRecyclerView) {
+        final boolean resetTextField = mSearchBarEditView.getText().toString().length() > 0;
+        final int translationX = Utilities.pxFromDp(SEARCH_TRANSLATION_X_DP,
+                getContext().getResources().getDisplayMetrics());
+        if (animated) {
+            // Hide the search bar and focus the recycler view
+            mSearchBarContainerView.animate()
+                    .alpha(0f)
+                    .translationX(0)
+                    .setDuration(FADE_IN_DURATION)
+                    .withLayer()
+                    .withEndAction(new Runnable() {
+                        @Override
+                        public void run() {
+                            mSearchBarContainerView.setVisibility(View.INVISIBLE);
+                            if (resetTextField) {
+                                mSearchBarEditView.setText("");
+                            }
+                            mApps.setFilter(null);
+                            if (returnFocusToRecyclerView) {
+                                mAppsRecyclerView.requestFocus();
+                            }
+                        }
+                    });
+            mSearchButtonView.setTranslationX(-translationX);
+            mSearchButtonView.animate()
+                    .alpha(1f)
+                    .translationX(0)
+                    .setDuration(FADE_OUT_DURATION)
+                    .withLayer();
+        } else {
+            mSearchBarContainerView.setVisibility(View.INVISIBLE);
+            if (resetTextField) {
+                mSearchBarEditView.setText("");
+            }
+            mApps.setFilter(null);
+            mSearchButtonView.setAlpha(1f);
+            mSearchButtonView.setTranslationX(0f);
+            if (returnFocusToRecyclerView) {
+                mAppsRecyclerView.requestFocus();
+            }
+        }
+        getInputMethodManager().hideSoftInputFromWindow(getWindowToken(), 0);
+    }
+
+    /**
+     * Updates the visibility of the prediction bar.
+     * @return whether the prediction bar is visible
+     */
+    private boolean updatePredictionBarVisibility() {
+        boolean showPredictionBar = !mApps.getPredictedApps().isEmpty() && (!mApps.hasFilter() ||
+                mSearchBarEditView.getEditableText().toString().isEmpty());
+        if (showPredictionBar) {
+            mPredictionBarView.setVisibility(View.VISIBLE);
+        } else if (!showPredictionBar) {
+            mPredictionBarView.setVisibility(View.INVISIBLE);
+        }
+        return showPredictionBar;
+    }
+
+    /**
+     * Returns an input method manager.
+     */
+    private InputMethodManager getInputMethodManager() {
+        return (InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
+    }
+}