Added ColorExtractionService and ExtractedColors.

- Launcher has an instance of ExtractedColors, which is loaded from
  LauncherProvider in onCreate() and whenever the wallpaper changes.
  - When the wallpaper changes, the ColorExtractionService is started
    in the :wallpaper-chooser process.
  - ColorExtractionService builds an ExtractedColors instance and saves
    it as a String in LauncherProvider.
  - When the results are saved, Launcher gets a callback through
    LauncherProviderChangeListener and reloads the ExtractedColors.
- Whenever Launcher loads Extractecolors, it also re-colors items
  (currently a no-op).

Change-Id: I319e2cfe0a86abcbc6bb39ef6b9fbbcad54ad743

1 files changed, 8 insertions, 0 deletions

diff --git a/src/com/android/launcher3/LauncherAppState.java b/src/com/android/launcher3/LauncherAppState.java
index e58652b8e..302a0c36a 100644
--- a/src/com/android/launcher3/LauncherAppState.java
+++ b/src/com/android/launcher3/LauncherAppState.java
@@ -28,6 +28,7 @@ import com.android.launcher3.compat.LauncherAppsCompat;
 import com.android.launcher3.compat.PackageInstallerCompat;
 import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.dynamicui.ExtractionUtils;
 import com.android.launcher3.util.ConfigMonitor;
 import com.android.launcher3.util.TestingUtils;
 import com.android.launcher3.util.Thunk;
@@ -108,6 +109,11 @@ public class LauncherAppState {
         filter.addAction(LauncherAppsCompat.ACTION_MANAGED_PROFILE_ADDED);
         filter.addAction(LauncherAppsCompat.ACTION_MANAGED_PROFILE_REMOVED);
         filter.addAction(LauncherAppsCompat.ACTION_MANAGED_PROFILE_AVAILABILITY_CHANGED);
+        // For extracting colors from the wallpaper
+        if (Utilities.isNycOrAbove()) {
+            // TODO: add a broadcast entry to the manifest for pre-N.
+            filter.addAction(Intent.ACTION_WALLPAPER_CHANGED);
+        }
 
         sContext.registerReceiver(mModel, filter);
         UserManagerCompat.getInstance(sContext).enableAndResetCache();
@@ -121,6 +127,8 @@ public class LauncherAppState {
             }, new IntentFilter(Intent.ACTION_WALLPAPER_CHANGED));
         }
         new ConfigMonitor(sContext).register();
+
+        ExtractionUtils.startColorExtractionServiceIfNecessary(sContext);
     }
 
     /**