Add smartspace custom widget

Flag: SMARTSPACE_AS_A_WIDGET
Test: no test
Bug: 200721106
Change-Id: I4ae4ff72ff7267bab0b5a928f3f78b47f7cfbc1f

12 files changed, 143 insertions, 102 deletions

diff --git a/quickstep/src/com/android/launcher3/uioverrides/QuickstepWidgetHolder.java b/quickstep/src/com/android/launcher3/uioverrides/QuickstepWidgetHolder.java
index f7bef031c7..f66bc602a8 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/QuickstepWidgetHolder.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/QuickstepWidgetHolder.java
@@ -37,6 +37,7 @@ import com.android.launcher3.util.IntSet;
 import com.android.launcher3.widget.LauncherAppWidgetHostView;
 import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.widget.LauncherWidgetHolder;
+import com.android.launcher3.widget.custom.CustomWidgetManager;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -237,6 +238,14 @@ public final class QuickstepWidgetHolder extends LauncherWidgetHolder {
     @Override
     public LauncherAppWidgetHostView createView(@NonNull Context context, int appWidgetId,
             @NonNull LauncherAppWidgetProviderInfo appWidget) {
+
+        if (appWidget.isCustomWidget()) {
+            LauncherAppWidgetHostView lahv = new LauncherAppWidgetHostView(context);
+            lahv.setAppWidget(appWidgetId, appWidget);
+            CustomWidgetManager.INSTANCE.get(context).onViewCreated(lahv);
+            return lahv;
+        }
+
         LauncherAppWidgetHostView widgetView = getPendingView(appWidgetId);
         if (widgetView != null) {
             removePendingView(appWidgetId);
diff --git a/res/values/config.xml b/res/values/config.xml
index 8f9731c534..cd9c9de69f 100644
--- a/res/values/config.xml
+++ b/res/values/config.xml
@@ -241,4 +241,7 @@
         <item>@dimen/iconSize66dp</item>
         <item>@dimen/iconSize72dp</item>
     </integer-array>
+
+    <!--  Used for custom widgets  -->
+    <array name="custom_widget_providers"/>
 </resources>
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 606b2c4d89..c1473d7eec 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -68,6 +68,7 @@ import static com.android.launcher3.logging.StatsLogManager.StatsLatencyLogger.L
 import static com.android.launcher3.logging.StatsLogManager.StatsLatencyLogger.LatencyType.WARM;
 import static com.android.launcher3.model.ItemInstallQueue.FLAG_ACTIVITY_PAUSED;
 import static com.android.launcher3.model.ItemInstallQueue.FLAG_DRAG_AND_DROP;
+import static com.android.launcher3.model.data.LauncherAppWidgetInfo.CUSTOM_WIDGET_ID;
 import static com.android.launcher3.popup.SystemShortcut.APP_INFO;
 import static com.android.launcher3.popup.SystemShortcut.INSTALL;
 import static com.android.launcher3.popup.SystemShortcut.WIDGETS;
@@ -885,7 +886,7 @@ public class Launcher extends StatefulActivity<LauncherState>
                 if (widgetInfo != null) {
                     // Since the view was just bound, also launch the configure activity if needed
                     LauncherAppWidgetProviderInfo provider = mAppWidgetManager
-                            .getLauncherAppWidgetInfo(widgetId);
+                            .getLauncherAppWidgetInfo(widgetId, info.getTargetComponent());
                     if (provider != null) {
                         new WidgetAddFlowHandler(provider)
                                 .startConfigActivity(this, widgetInfo,
@@ -1499,7 +1500,8 @@ public class Launcher extends StatefulActivity<LauncherState>
             AppWidgetHostView hostView, LauncherAppWidgetProviderInfo appWidgetInfo) {
 
         if (appWidgetInfo == null) {
-            appWidgetInfo = mAppWidgetManager.getLauncherAppWidgetInfo(appWidgetId);
+            appWidgetInfo = mAppWidgetManager.getLauncherAppWidgetInfo(appWidgetId,
+                    itemInfo.getTargetComponent());
         }
 
         if (hostView == null) {
@@ -1985,8 +1987,8 @@ public class Launcher extends StatefulActivity<LauncherState>
             // In this case, we either need to start an activity to get permission to bind
             // the widget, or we need to start an activity to configure the widget, or both.
             if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET) {
-                appWidgetId = CustomWidgetManager.INSTANCE.get(this).getWidgetIdForCustomProvider(
-                        info.componentName);
+                appWidgetId = CustomWidgetManager.INSTANCE.get(this)
+                        .allocateCustomAppWidgetId(info.componentName);
             } else {
                 appWidgetId = getAppWidgetHolder().allocateAppWidgetId();
             }
@@ -2632,9 +2634,10 @@ public class Launcher extends StatefulActivity<LauncherState>
                     }
                 }
             } else {
-                appWidgetInfo = mAppWidgetManager.getLauncherAppWidgetInfo(item.appWidgetId);
+                appWidgetInfo = mAppWidgetManager.getLauncherAppWidgetInfo(item.appWidgetId,
+                        item.getTargetComponent());
                 if (appWidgetInfo == null) {
-                    if (item.appWidgetId <= LauncherAppWidgetInfo.CUSTOM_WIDGET_ID) {
+                    if (item.appWidgetId <= CUSTOM_WIDGET_ID) {
                         removalReason =
                                 "CustomWidgetManager cannot find provider from that widget id.";
                     } else {
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index 8be8fedf80..a1a3974eeb 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -3413,7 +3413,8 @@ public class Workspace<T extends View & PageIndicator> extends PagedView<T>
             if (item.hasRestoreFlag(LauncherAppWidgetInfo.FLAG_ID_NOT_VALID)) {
                 widgetInfo = widgetHelper.findProvider(item.providerName, item.user);
             } else {
-                widgetInfo = widgetHelper.getLauncherAppWidgetInfo(item.appWidgetId);
+                widgetInfo = widgetHelper.getLauncherAppWidgetInfo(item.appWidgetId,
+                        item.getTargetComponent());
             }
 
             if (widgetInfo != null) {
diff --git a/src/com/android/launcher3/model/GridSizeMigrationUtil.java b/src/com/android/launcher3/model/GridSizeMigrationUtil.java
index c233872cc5..78875a3cc1 100644
--- a/src/com/android/launcher3/model/GridSizeMigrationUtil.java
+++ b/src/com/android/launcher3/model/GridSizeMigrationUtil.java
@@ -539,8 +539,8 @@ public class GridSizeMigrationUtil {
                             verifyPackage(cn.getPackageName());
 
                             int widgetId = c.getInt(indexAppWidgetId);
-                            LauncherAppWidgetProviderInfo pInfo =
-                                    widgetManagerHelper.getLauncherAppWidgetInfo(widgetId);
+                            LauncherAppWidgetProviderInfo pInfo = widgetManagerHelper
+                                    .getLauncherAppWidgetInfo(widgetId, cn);
                             Point spans = null;
                             if (pInfo != null) {
                                 spans = pInfo.getMinSpans();
diff --git a/src/com/android/launcher3/model/LoaderTask.java b/src/com/android/launcher3/model/LoaderTask.java
index 0e68db29e8..08a6cf01e2 100644
--- a/src/com/android/launcher3/model/LoaderTask.java
+++ b/src/com/android/launcher3/model/LoaderTask.java
@@ -95,6 +95,7 @@ import com.android.launcher3.util.PackageUserKey;
 import com.android.launcher3.util.TraceHelper;
 import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.widget.WidgetManagerHelper;
+import com.android.launcher3.widget.custom.CustomWidgetManager;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -740,8 +741,13 @@ public class LoaderTask implements Runnable {
 
                     ComponentKey providerKey = new ComponentKey(component, c.user);
                     if (!mWidgetProvidersMap.containsKey(providerKey)) {
-                        mWidgetProvidersMap.put(providerKey,
-                                widgetHelper.findProvider(component, c.user));
+                        if (customWidget) {
+                            mWidgetProvidersMap.put(providerKey, CustomWidgetManager.INSTANCE
+                                    .get(mApp.getContext()).getWidgetProvider(component));
+                        } else {
+                            mWidgetProvidersMap.put(providerKey,
+                                    widgetHelper.findProvider(component, c.user));
+                        }
                     }
                     final AppWidgetProviderInfo provider = mWidgetProvidersMap.get(providerKey);
 
@@ -814,7 +820,8 @@ public class LoaderTask implements Runnable {
                             return;
                         }
                         LauncherAppWidgetProviderInfo widgetProviderInfo =
-                                widgetHelper.getLauncherAppWidgetInfo(appWidgetId);
+                                widgetHelper.getLauncherAppWidgetInfo(appWidgetId,
+                                        appWidgetInfo.getTargetComponent());
                         if (widgetProviderInfo != null
                                 && (appWidgetInfo.spanX < widgetProviderInfo.minSpanX
                                 || appWidgetInfo.spanY < widgetProviderInfo.minSpanY)) {
diff --git a/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java b/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java
index 76a044dac8..f64fd05fd5 100644
--- a/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java
+++ b/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java
@@ -23,9 +23,11 @@ import android.content.res.Configuration;
 import android.graphics.Rect;
 import android.os.Build;
 import android.os.Handler;
+import android.os.Parcelable;
 import android.os.SystemClock;
 import android.os.Trace;
 import android.util.Log;
+import android.util.SparseArray;
 import android.util.SparseBooleanArray;
 import android.util.SparseIntArray;
 import android.view.MotionEvent;
@@ -498,4 +500,13 @@ public class LauncherAppWidgetHostView extends BaseLauncherAppWidgetHostView
          */
         void notifyBoundChangeOnPreLayout(View v, int left, int top, int right, int bottom);
     }
+
+    @Override
+    protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) {
+        try {
+            super.dispatchRestoreInstanceState(container);
+        } catch (Exception e) {
+            Log.i(TAG, "Exception: " + e);
+        }
+    }
 }
diff --git a/src/com/android/launcher3/widget/LauncherAppWidgetProviderInfo.java b/src/com/android/launcher3/widget/LauncherAppWidgetProviderInfo.java
index 10aef9ac66..ef51d152c7 100644
--- a/src/com/android/launcher3/widget/LauncherAppWidgetProviderInfo.java
+++ b/src/com/android/launcher3/widget/LauncherAppWidgetProviderInfo.java
@@ -67,7 +67,7 @@ public class LauncherAppWidgetProviderInfo extends AppWidgetProviderInfo
      */
     public int maxSpanY;
 
-    private boolean mIsMinSizeFulfilled;
+    protected boolean mIsMinSizeFulfilled;
 
     public static LauncherAppWidgetProviderInfo fromProviderInfo(Context context,
             AppWidgetProviderInfo info) {
diff --git a/src/com/android/launcher3/widget/WidgetManagerHelper.java b/src/com/android/launcher3/widget/WidgetManagerHelper.java
index 737cdbd61f..0860e72420 100644
--- a/src/com/android/launcher3/widget/WidgetManagerHelper.java
+++ b/src/com/android/launcher3/widget/WidgetManagerHelper.java
@@ -57,10 +57,15 @@ public class WidgetManagerHelper {
     /**
      * @see AppWidgetManager#getAppWidgetInfo(int)
      */
-    public LauncherAppWidgetProviderInfo getLauncherAppWidgetInfo(int appWidgetId) {
-        if (appWidgetId <= LauncherAppWidgetInfo.CUSTOM_WIDGET_ID) {
-            return CustomWidgetManager.INSTANCE.get(mContext).getWidgetProvider(appWidgetId);
+    public LauncherAppWidgetProviderInfo getLauncherAppWidgetInfo(
+            int appWidgetId, ComponentName componentName) {
+
+        // For custom widgets.
+        if (appWidgetId <= LauncherAppWidgetInfo.CUSTOM_WIDGET_ID && !CustomWidgetManager
+                .INSTANCE.get(mContext).getWidgetIdForCustomProvider(componentName).equals("")) {
+            return CustomWidgetManager.INSTANCE.get(mContext).getWidgetProvider(componentName);
         }
+
         AppWidgetProviderInfo info = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
         return info == null ? null : LauncherAppWidgetProviderInfo.fromProviderInfo(mContext, info);
     }
diff --git a/src/com/android/launcher3/widget/custom/CustomAppWidgetProviderInfo.java b/src/com/android/launcher3/widget/custom/CustomAppWidgetProviderInfo.java
index 8b3bbce1c5..44571a6c4a 100644
--- a/src/com/android/launcher3/widget/custom/CustomAppWidgetProviderInfo.java
+++ b/src/com/android/launcher3/widget/custom/CustomAppWidgetProviderInfo.java
@@ -33,14 +33,15 @@ import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
 public class CustomAppWidgetProviderInfo extends LauncherAppWidgetProviderInfo
         implements Parcelable {
 
-    public final int providerId;
+    public final String providerId;
 
-    protected CustomAppWidgetProviderInfo(Parcel parcel, boolean readSelf, int providerId) {
+    protected CustomAppWidgetProviderInfo(Parcel parcel, boolean readSelf, String providerId) {
         super(parcel);
         if (readSelf) {
-            this.providerId = parcel.readInt();
+            this.providerId = parcel.readString();
 
-            provider = new ComponentName(parcel.readString(), CLS_CUSTOM_WIDGET_PREFIX + providerId);
+            provider = new ComponentName(parcel.readString(),
+                    CLS_CUSTOM_WIDGET_PREFIX + parcel.readString());
 
             label = parcel.readString();
             initialLayout = parcel.readInt();
@@ -58,7 +59,10 @@ public class CustomAppWidgetProviderInfo extends LauncherAppWidgetProviderInfo
     }
 
     @Override
-    public void initSpans(Context context, InvariantDeviceProfile idp) { }
+    public void initSpans(Context context, InvariantDeviceProfile idp) {
+        mIsMinSizeFulfilled = Math.min(spanX, minSpanX) <= idp.numColumns
+                && Math.min(spanY, minSpanY) <= idp.numRows;
+    }
 
     @Override
     public String getLabel(PackageManager packageManager) {
@@ -73,8 +77,9 @@ public class CustomAppWidgetProviderInfo extends LauncherAppWidgetProviderInfo
     @Override
     public void writeToParcel(Parcel out, int flags) {
         super.writeToParcel(out, flags);
-        out.writeInt(providerId);
+        out.writeString(providerId);
         out.writeString(provider.getPackageName());
+        out.writeString(provider.getClassName());
 
         out.writeString(label);
         out.writeInt(initialLayout);
@@ -93,7 +98,7 @@ public class CustomAppWidgetProviderInfo extends LauncherAppWidgetProviderInfo
 
         @Override
         public CustomAppWidgetProviderInfo createFromParcel(Parcel parcel) {
-            return new CustomAppWidgetProviderInfo(parcel, true, 0);
+            return new CustomAppWidgetProviderInfo(parcel, true, "");
         }
 
         @Override
diff --git a/src/com/android/launcher3/widget/custom/CustomWidgetManager.java b/src/com/android/launcher3/widget/custom/CustomWidgetManager.java
index 2e2a968a44..7cf022175b 100644
--- a/src/com/android/launcher3/widget/custom/CustomWidgetManager.java
+++ b/src/com/android/launcher3/widget/custom/CustomWidgetManager.java
@@ -16,7 +16,8 @@
 
 package com.android.launcher3.widget.custom;
 
-import static com.android.launcher3.widget.LauncherAppWidgetProviderInfo.CLS_CUSTOM_WIDGET_PREFIX;
+import static com.android.launcher3.config.FeatureFlags.SMARTSPACE_AS_A_WIDGET;
+import static com.android.launcher3.model.data.LauncherAppWidgetInfo.CUSTOM_WIDGET_ID;
 
 import android.appwidget.AppWidgetManager;
 import android.appwidget.AppWidgetProviderInfo;
@@ -24,12 +25,12 @@ import android.content.ComponentName;
 import android.content.Context;
 import android.os.Parcel;
 import android.os.Process;
-import android.util.SparseArray;
+import android.util.Log;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
-import com.android.launcher3.model.data.LauncherAppWidgetInfo;
+import com.android.launcher3.R;
 import com.android.launcher3.uioverrides.plugins.PluginManagerWrapper;
 import com.android.launcher3.util.MainThreadInitializedObject;
 import com.android.launcher3.util.PackageUserKey;
@@ -39,8 +40,11 @@ import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
 import com.android.systemui.plugins.CustomWidgetPlugin;
 import com.android.systemui.plugins.PluginListener;
 
+import java.lang.reflect.InvocationTargetException;
 import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 import java.util.function.Consumer;
 import java.util.stream.Stream;
 
@@ -52,24 +56,37 @@ public class CustomWidgetManager implements PluginListener<CustomWidgetPlugin>,
     public static final MainThreadInitializedObject<CustomWidgetManager> INSTANCE =
             new MainThreadInitializedObject<>(CustomWidgetManager::new);
 
+    private static final String TAG = "CustomWidgetManager";
     private final Context mContext;
-    /**
-     * auto provider Id is an ever-increasing number that serves as the providerId whenever a new
-     * custom widget has been connected.
-     */
-    private int mAutoProviderId = 0;
-    private final SparseArray<CustomWidgetPlugin> mPlugins;
+    private final HashMap<String, CustomWidgetPlugin> mPlugins;
     private final List<CustomAppWidgetProviderInfo> mCustomWidgets;
-    private final SparseArray<ComponentName> mWidgetsIdMap;
+    private final HashMap<ComponentName, String> mWidgetsIdMap;
     private Consumer<PackageUserKey> mWidgetRefreshCallback;
 
     private CustomWidgetManager(Context context) {
         mContext = context;
-        mPlugins = new SparseArray<>();
+        mPlugins = new HashMap<>();
         mCustomWidgets = new ArrayList<>();
-        mWidgetsIdMap = new SparseArray<>();
+        mWidgetsIdMap = new HashMap<>();
         PluginManagerWrapper.INSTANCE.get(context)
                 .addPluginListener(this, CustomWidgetPlugin.class, true);
+
+        if (SMARTSPACE_AS_A_WIDGET.get()) {
+            for (String s: context.getResources()
+                    .getStringArray(R.array.custom_widget_providers)) {
+                try {
+                    Class<?> cls = Class.forName(s);
+                    CustomWidgetPlugin plugin = (CustomWidgetPlugin)
+                            cls.getDeclaredConstructor(Context.class).newInstance(context);
+                    mPlugins.put(plugin.getId(), plugin);
+                    onPluginConnected(mPlugins.get(plugin.getId()), context);
+                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException
+                         | ClassCastException | NoSuchMethodException
+                         | InvocationTargetException e) {
+                    Log.e(TAG, "Exception found when trying to add custom widgets: " + e);
+                }
+            }
+        }
     }
 
     @Override
@@ -79,28 +96,41 @@ public class CustomWidgetManager implements PluginListener<CustomWidgetPlugin>,
 
     @Override
     public void onPluginConnected(CustomWidgetPlugin plugin, Context context) {
-        mPlugins.put(mAutoProviderId, plugin);
         List<AppWidgetProviderInfo> providers = AppWidgetManager.getInstance(context)
                 .getInstalledProvidersForProfile(Process.myUserHandle());
         if (providers.isEmpty()) return;
         Parcel parcel = Parcel.obtain();
         providers.get(0).writeToParcel(parcel, 0);
         parcel.setDataPosition(0);
-        CustomAppWidgetProviderInfo info = newInfo(mAutoProviderId, plugin, parcel, context);
+        CustomAppWidgetProviderInfo info = newInfo(plugin.getId(), plugin, parcel, context);
         parcel.recycle();
         mCustomWidgets.add(info);
-        mWidgetsIdMap.put(mAutoProviderId, info.provider);
-        mWidgetRefreshCallback.accept(null);
-        mAutoProviderId++;
+        mWidgetsIdMap.put(info.provider, plugin.getId());
     }
 
     @Override
     public void onPluginDisconnected(CustomWidgetPlugin plugin) {
-        int providerId = findProviderId(plugin);
-        if (providerId == -1) return;
-        mPlugins.remove(providerId);
-        mCustomWidgets.remove(getWidgetProvider(providerId));
-        mWidgetsIdMap.remove(providerId);
+        String providerId = plugin.getId();
+        if (mPlugins.containsKey(providerId)) {
+            mPlugins.remove(providerId);
+        }
+
+        ComponentName cn = null;
+        for (Map.Entry entry: mWidgetsIdMap.entrySet()) {
+            if (entry.getValue().equals(providerId)) {
+                cn = (ComponentName) entry.getKey();
+            }
+        }
+
+        if (cn != null) {
+            mWidgetsIdMap.remove(cn);
+            for (int i = 0; i < mCustomWidgets.size(); i++) {
+                if (mCustomWidgets.get(i).getComponent().equals(cn)) {
+                    mCustomWidgets.remove(i);
+                    return;
+                }
+            }
+        }
     }
 
     /**
@@ -131,12 +161,11 @@ public class CustomWidgetManager implements PluginListener<CustomWidgetPlugin>,
     /**
      * Returns the widget id for a specific provider.
      */
-    public int getWidgetIdForCustomProvider(@NonNull ComponentName provider) {
-        int index = mWidgetsIdMap.indexOfValue(provider);
-        if (index >= 0) {
-            return LauncherAppWidgetInfo.CUSTOM_WIDGET_ID - mWidgetsIdMap.keyAt(index);
+    public String getWidgetIdForCustomProvider(@NonNull ComponentName provider) {
+        if (mWidgetsIdMap.containsKey(provider)) {
+            return mWidgetsIdMap.get(provider);
         } else {
-            return AppWidgetManager.INVALID_APPWIDGET_ID;
+            return "";
         }
     }
 
@@ -144,38 +173,26 @@ public class CustomWidgetManager implements PluginListener<CustomWidgetPlugin>,
      * Returns the widget provider in respect to given widget id.
      */
     @Nullable
-    public LauncherAppWidgetProviderInfo getWidgetProvider(int widgetId) {
-        ComponentName cn = mWidgetsIdMap.get(LauncherAppWidgetInfo.CUSTOM_WIDGET_ID - widgetId);
+    public LauncherAppWidgetProviderInfo getWidgetProvider(ComponentName componentName) {
         for (LauncherAppWidgetProviderInfo info : mCustomWidgets) {
-            if (info.provider.equals(cn)) return info;
+            if (info.provider.equals(componentName)) return info;
         }
         return null;
     }
 
-    private static CustomAppWidgetProviderInfo newInfo(int providerId, CustomWidgetPlugin plugin,
+    private static CustomAppWidgetProviderInfo newInfo(String providerId, CustomWidgetPlugin plugin,
             Parcel parcel, Context context) {
         CustomAppWidgetProviderInfo info = new CustomAppWidgetProviderInfo(
                 parcel, false, providerId);
-        info.provider = new ComponentName(
-                context.getPackageName(), CLS_CUSTOM_WIDGET_PREFIX + providerId);
-
-        info.label = plugin.getLabel();
-        info.resizeMode = plugin.getResizeMode();
-
-        info.spanX = plugin.getSpanX();
-        info.spanY = plugin.getSpanY();
-        info.minSpanX = plugin.getMinSpanX();
-        info.minSpanY = plugin.getMinSpanY();
+        plugin.updateWidgetInfo(info, context);
         return info;
     }
 
-    private int findProviderId(CustomWidgetPlugin plugin) {
-        for (int i = 0; i < mPlugins.size(); i++) {
-            int providerId = mPlugins.keyAt(i);
-            if (mPlugins.get(providerId) == plugin) {
-                return providerId;
-            }
-        }
-        return -1;
+    /**
+     * Returns an id to set as the appWidgetId for a custom widget.
+     */
+    public int allocateCustomAppWidgetId(ComponentName componentName) {
+        return CUSTOM_WIDGET_ID - mCustomWidgets.indexOf(getWidgetProvider(componentName));
     }
+
 }
diff --git a/src_plugins/com/android/systemui/plugins/CustomWidgetPlugin.java b/src_plugins/com/android/systemui/plugins/CustomWidgetPlugin.java
index 56ebcc5dc6..af4f22c287 100644
--- a/src_plugins/com/android/systemui/plugins/CustomWidgetPlugin.java
+++ b/src_plugins/com/android/systemui/plugins/CustomWidgetPlugin.java
@@ -17,6 +17,8 @@
 package com.android.systemui.plugins;
 
 import android.appwidget.AppWidgetHostView;
+import android.appwidget.AppWidgetProviderInfo;
+import android.content.Context;
 
 import com.android.systemui.plugins.annotations.ProvidesInterface;
 
@@ -30,42 +32,20 @@ public interface CustomWidgetPlugin extends Plugin {
     int VERSION = 1;
 
     /**
-     * The label to display to the user in the AppWidget picker.
-     */
-    String getLabel();
-
-    /**
-     * The default width of the widget when added to a host, in dp. The widget will get
-     * at least this width, and will often be given more, depending on the host.
-     */
-    int getSpanX();
-
-    /**
-     * The default height of the widget when added to a host, in dp. The widget will get
-     * at least this height, and will often be given more, depending on the host.
-     */
-    int getSpanY();
-
-    /**
-     * Minimum width (in dp) which the widget can be resized to. This field has no effect if it
-     * is greater than minWidth or if horizontal resizing isn't enabled.
+     * Notify the plugin that container of the widget has been rendered, where the custom widget
+     * can be attached to.
      */
-    int getMinSpanX();
+    void onViewCreated(AppWidgetHostView parent);
 
     /**
-     * Minimum height (in dp) which the widget can be resized to. This field has no effect if it
-     * is greater than minHeight or if vertical resizing isn't enabled.
+     * Get the UUID for the custom widget.
      */
-    int getMinSpanY();
+    String getId();
 
     /**
-     * The rules by which a widget can be resized.
+     * Used to modify a widgets' info.
      */
-    int getResizeMode();
+    default void updateWidgetInfo(AppWidgetProviderInfo info, Context context) {
 
-    /**
-     * Notify the plugin that container of the widget has been rendered, where the custom widget
-     * can be attached to.
-     */
-    void onViewCreated(AppWidgetHostView parent);
+    }
 }