<UserEventLogging> Log app launches

b/26494415

1) Current Logger can capture taps from
- homescreen
- folder inside homescreen
- apps prediction
- all apps a-z
- tap from hotseat
2) Deprecate LauncherCallback methods that is no longer needed

Future CL.
3) Stats and Logger will be merged. Bundle used for Stats can be
replaced with LauncherLogProto
4) Logging anything else other than app launches

Change-Id: Id52eb615f66142017b5c490a220ce6654d325681

6 files changed, 236 insertions, 3 deletions

diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index ce962616f..7b53f9f8d 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -108,6 +108,7 @@ import com.android.launcher3.dragndrop.DragController;
 import com.android.launcher3.dragndrop.DragLayer;
 import com.android.launcher3.dragndrop.DragView;
 import com.android.launcher3.model.WidgetsModel;
+import com.android.launcher3.userevent.Logger;
 import com.android.launcher3.util.ComponentKey;
 import com.android.launcher3.util.LongArrayMap;
 import com.android.launcher3.util.TestingUtils;
@@ -367,6 +368,8 @@ public class Launcher extends Activity
     }
 
     private Stats mStats;
+    private Logger mUserEventLogger;
+
     public FocusIndicatorView mFocusHandler;
     private boolean mRotationEnabled = false;
 
@@ -424,6 +427,7 @@ public class Launcher extends Activity
         mDragController = new DragController(this);
         mStateTransitionAnimation = new LauncherStateTransitionAnimation(this);
 
+        mUserEventLogger = new Logger(this);
         mStats = new Stats(this);
 
         mAppWidgetManager = AppWidgetManagerCompat.getInstance(this);
@@ -627,6 +631,7 @@ public class Launcher extends Activity
     public Stats getStats() {
         return mStats;
     }
+    public Logger getLogger() {return mUserEventLogger; }
 
     public boolean isDraggingEnabled() {
         // We prevent dragging when we are loading the workspace as it is possible to pick up a view
@@ -950,6 +955,7 @@ public class Launcher extends Activity
         }
 
         super.onResume();
+        mUserEventLogger.resetElapsedSessionMillis();
 
         // Restore the previous launcher state
         if (mOnResumeState == State.WORKSPACE) {
@@ -3331,6 +3337,7 @@ public class Launcher extends Activity
             getWindow().getDecorView()
                     .sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
         }
+        mUserEventLogger.resetElapsedContainerMillis();
         return changed;
     }
 
diff --git a/src/com/android/launcher3/LauncherCallbacks.java b/src/com/android/launcher3/LauncherCallbacks.java
index 772fbf358..1d7575253 100644
--- a/src/com/android/launcher3/LauncherCallbacks.java
+++ b/src/com/android/launcher3/LauncherCallbacks.java
@@ -54,20 +54,33 @@ public interface LauncherCallbacks {
      */
     public void onLauncherProviderChange();
     public void finishBindingItems(final boolean upgradePath);
-    public void onClickAllAppsButton(View v);
     public void bindAllApplications(ArrayList<AppInfo> apps);
+    public void onInteractionBegin();
+    public void onInteractionEnd();
+
+    /**
+     * Extension points for Gel Logging.
+     */
+    @Deprecated
+    public void onClickAllAppsButton(View v);
+    @Deprecated
     public void onClickFolderIcon(View v);
+    @Deprecated
     public void onClickAppShortcut(View v);
     @Deprecated
     public void onClickPagedViewIcon(View v);
+    @Deprecated
     public void onClickWallpaperPicker(View v);
+    @Deprecated
     public void onClickSettingsButton(View v);
+    @Deprecated
     public void onClickAddWidgetButton(View v);
+    @Deprecated
     public void onPageSwitch(View newPage, int newPageIndex);
+    @Deprecated
     public void onWorkspaceLockedChanged();
+    @Deprecated
     public void onDragStarted(View view);
-    public void onInteractionBegin();
-    public void onInteractionEnd();
 
     /*
      * Extension points for replacing the search experience
diff --git a/src/com/android/launcher3/Stats.java b/src/com/android/launcher3/Stats.java
index 59feeb7e2..287382869 100644
--- a/src/com/android/launcher3/Stats.java
+++ b/src/com/android/launcher3/Stats.java
@@ -26,6 +26,7 @@ import android.view.View;
 import android.view.ViewParent;
 
 import com.android.launcher3.config.ProviderConfig;
+import com.android.launcher3.userevent.Logger;
 
 public class Stats {
 
@@ -145,5 +146,6 @@ public class Stats {
         LaunchSourceUtils.populateSourceDataFromAncestorProvider(v, sourceExtras);
         broadcastIntent.putExtra(EXTRA_SOURCE, sourceExtras);
         mLauncher.sendBroadcast(broadcastIntent, mLaunchBroadcastPermission);
+        mLauncher.getLogger().logAppLaunch(intent.getComponent().getPackageName(), shortcut, sourceExtras);
     }
 }
diff --git a/src/com/android/launcher3/allapps/AllAppsContainerView.java b/src/com/android/launcher3/allapps/AllAppsContainerView.java
index 6bcbb61aa..22af94c74 100644
--- a/src/com/android/launcher3/allapps/AllAppsContainerView.java
+++ b/src/com/android/launcher3/allapps/AllAppsContainerView.java
@@ -47,6 +47,7 @@ import com.android.launcher3.LauncherTransitionable;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.Workspace;
+import com.android.launcher3.userevent.Logger;
 import com.android.launcher3.util.ComponentKey;
 
 import java.nio.charset.Charset;
@@ -312,6 +313,7 @@ public class AllAppsContainerView extends BaseContainerView implements DragSourc
                 icon.getMeasuredHeight());
 
         updateBackgroundAndPaddings();
+        mLauncher.getLogger().resetElapsedContainerMillis();
     }
 
     @Override
diff --git a/src/com/android/launcher3/config/FeatureFlags.java b/src/com/android/launcher3/config/FeatureFlags.java
index e8e15c207..1988c2d81 100644
--- a/src/com/android/launcher3/config/FeatureFlags.java
+++ b/src/com/android/launcher3/config/FeatureFlags.java
@@ -35,4 +35,5 @@ public final class FeatureFlags {
     public static boolean LAUNCHER3_LEGACY_WORKSPACE_DND = false;
     public static boolean LAUNCHER3_ICON_NORMALIZATION = true;
     public static boolean LAUNCHER3_CLIPPED_FOLDER_ICON = false;
+    public static boolean LAUNCHER3_LEGACY_LOGGING = false;
 }
diff --git a/src/com/android/launcher3/userevent/Logger.java b/src/com/android/launcher3/userevent/Logger.java
new file mode 100644
index 000000000..ae9041a4b
--- /dev/null
+++ b/src/com/android/launcher3/userevent/Logger.java
@@ -0,0 +1,208 @@
+package com.android.launcher3.userevent;
+
+import com.android.launcher3.ShortcutInfo;
+import com.android.launcher3.LauncherSettings;
+import com.android.launcher3.Stats;
+import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.userevent.nano.LauncherLogProto;
+import com.android.launcher3.userevent.nano.LauncherLogProto.Action;
+import com.android.launcher3.userevent.nano.LauncherLogProto.Target;
+import com.android.launcher3.userevent.nano.LauncherLogProto.LauncherEvent;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.util.Log;
+
+import java.util.Locale;
+
+/**
+ * Creates {@LauncherLogProto} nano protobuf object that can be used for user event
+ * metrics analysis.
+ */
+public class Logger {
+
+    private static final String TAG = "UserEventLogger";
+    private static final boolean DEBUG = false;
+
+    private long mActionDurationMillis;
+    private long mElapsedContainerMillis;
+    private long mElapsedSessionMillis;
+
+    private Context mContext;
+
+    public Logger(Context context) {
+        mContext = context;
+    }
+
+    public void logAppLaunch(String provider, ShortcutInfo shortcut, Bundle bundle) {
+        LauncherEvent event = new LauncherEvent();
+        event.action = new Action();
+        event.action.type = Action.TOUCH;
+        event.action.touch = Action.TAP;
+
+        event.srcTarget = new Target();
+        event.srcTarget.type = Target.ITEM;
+        event.srcTarget.itemType = LauncherLogProto.APP_ICON;
+        // TODO: package hash name should be different per device.
+        event.srcTarget.packageNameHash = provider.hashCode();
+
+        event.srcTarget.parent = new Target();
+        String subContainer = bundle.getString(Stats.SOURCE_EXTRA_SUB_CONTAINER);
+
+        if (shortcut != null) {
+            event.srcTarget.parent.containerType = getContainerType(shortcut);
+            event.srcTarget.pageIndex = (int) shortcut.screenId;
+            event.srcTarget.gridX = shortcut.cellX;
+            event.srcTarget.gridX = shortcut.cellY;
+        }
+        if (subContainer != null) {
+            event.srcTarget.parent.type = Target.CONTAINER;
+            if (subContainer.equals(Stats.SUB_CONTAINER_FOLDER)) {
+                event.srcTarget.parent.containerType = LauncherLogProto.FOLDER;
+            } else if (subContainer.equals(Stats.SUB_CONTAINER_ALL_APPS_A_Z)) {
+                event.srcTarget.parent.containerType = LauncherLogProto.ALLAPPS;
+            } else if (subContainer.equals(Stats.CONTAINER_HOTSEAT)) {
+                event.srcTarget.parent.containerType = LauncherLogProto.HOTSEAT;
+            } else if (subContainer.equals(Stats.SUB_CONTAINER_ALL_APPS_PREDICTION)) {
+                event.srcTarget.parent.containerType = LauncherLogProto.PREDICTION;
+            }
+
+            if (DEBUG) {
+                Log.d(TAG, String.format("parent bundle: %s %s %s %s",
+                        bundle.getString(Stats.SOURCE_EXTRA_CONTAINER),
+                        bundle.getString(Stats.SOURCE_EXTRA_CONTAINER_PAGE),
+                        bundle.getString(Stats.SOURCE_EXTRA_SUB_CONTAINER),
+                        bundle.getString(Stats.SOURCE_EXTRA_SUB_CONTAINER_PAGE)));
+            }
+        }
+
+
+        // Assign timeToAction
+        event.elapsedContainerMillis = System.currentTimeMillis() - mElapsedContainerMillis;
+        event.elapsedSessionMillis = System.currentTimeMillis() - mElapsedSessionMillis;
+
+        // Debug
+        processLauncherEvent(event);
+    }
+
+    public void resetElapsedContainerMillis() {
+        mElapsedContainerMillis = System.currentTimeMillis();
+    }
+
+    public void resetElapsedSessionMillis() {
+        mElapsedSessionMillis = System.currentTimeMillis();
+    }
+
+    //
+    // Debugging helper methods.
+    // toString() cannot be overriden inside auto generated {@link LauncherLogProto}.
+    // Note: switch statement cannot be replaced with reflection as proguard strips the constants
+
+    private static void processLauncherEvent(LauncherEvent ev) {
+        if (DEBUG) {
+            if (ev.action.touch == Action.TAP && ev.srcTarget.itemType == LauncherLogProto.APP_ICON) {
+                Log.d(TAG, String.format(Locale.US, "action:%s target:%s\n\telapsed container %d ms session %d ms",
+                        getActionStr(ev.action),
+                        getTargetStr(ev.srcTarget),
+                        ev.elapsedContainerMillis,
+                        ev.elapsedSessionMillis));
+            }
+        }
+    }
+
+    private static int getContainerType(ShortcutInfo shortcut) {
+        switch ((int) shortcut.container) {
+            case LauncherSettings.Favorites.CONTAINER_DESKTOP: return LauncherLogProto.WORKSPACE;
+            case LauncherSettings.Favorites.CONTAINER_HOTSEAT: return LauncherLogProto.HOTSEAT;
+            default:
+                return (int) shortcut.container;
+        }
+    }
+
+    private static String getActionStr(Action action) {
+        switch(action.touch) {
+            case Action.TAP: return "TAP";
+            case Action.LONGPRESS: return "LONGPRESS";
+            case Action.DRAGDROP: return "DRAGDROP";
+            case Action.PINCH: return "PINCH";
+            default: return "UNKNOWN";
+        }
+    }
+
+    private static String getTargetStr(Target t) {
+        String typeStr;
+        switch (t.type) {
+            case LauncherLogProto.Target.ITEM:
+                return getItemStr(t);
+            case LauncherLogProto.Target.CONTROL:
+                return getControlStr(t);
+            case LauncherLogProto.Target.CONTAINER:
+                return getContainerStr(t);
+            default:
+                return "UNKNOWN TARGET TYPE";
+        }
+    }
+
+    private static String getItemStr(Target t) {
+        String typeStr = "";
+        switch(t.itemType){
+            case LauncherLogProto.APP_ICON: typeStr = "ICON"; break;
+            case LauncherLogProto.SHORTCUT: typeStr = "SHORTCUT"; break;
+            case LauncherLogProto.WIDGET: typeStr = "WIDGET"; break;
+            default: typeStr = "UNKNOWN";
+        }
+
+        return typeStr + " " + t.packageNameHash + " grid=(" + t.gridX + "," + t.gridY + ") "
+                + getContainerStr(t.parent);
+    }
+
+    private static String getControlStr(Target t) {
+        switch(t.controlType) {
+            case LauncherLogProto.ALL_APPS_BUTTON: return "ALL_APPS_BUTTON";
+            case LauncherLogProto.WIDGETS_BUTTON: return "WIDGETS_BUTTON";
+            case LauncherLogProto.WALLPAPER_BUTTON: return "WALLPAPER_BUTTON";
+            case LauncherLogProto.SETTINGS_BUTTON: return "SETTINGS_BUTTON";
+            case LauncherLogProto.REMOVE_TARGET: return "REMOVE_TARGET";
+            case LauncherLogProto.UNINSTALL_TARGET: return "UNINSTALL_TARGET";
+            case LauncherLogProto.APPINFO_TARGET: return "APPINFO_TARGET";
+            case LauncherLogProto.RESIZE_HANDLE: return "RESIZE_HANDLE";
+            case LauncherLogProto.FAST_SCROLL_HANDLE: return "FAST_SCROLL_HANDLE";
+            default: return "UNKNOWN";
+        }
+    }
+
+    private static String getContainerStr(Target t) {
+        String str;
+        Log.d(TAG, "t.containerType" + t.containerType);
+        switch (t.containerType) {
+            case LauncherLogProto.WORKSPACE:
+                str = "WORKSPACE";
+                break;
+            case LauncherLogProto.HOTSEAT:
+                str = "HOTSEAT";
+                break;
+            case LauncherLogProto.FOLDER:
+                str = "FOLDER";
+                break;
+            case LauncherLogProto.ALLAPPS:
+                str = "ALLAPPS";
+                break;
+            case LauncherLogProto.WIDGETS:
+                str = "WIDGETS";
+                break;
+            case LauncherLogProto.OVERVIEW:
+                str = "OVERVIEW";
+                break;
+            case LauncherLogProto.PREDICTION:
+                str = "PREDICTION";
+                break;
+            case LauncherLogProto.SEARCHRESULT:
+                str = "SEARCHRESULT";
+                break;
+            default:
+                str = "UNKNOWN";
+        }
+        return str + " id=" + t.pageIndex;
+    }
+}
+