Moving some utility classes to icon lib
Change-Id: I0cc19ea02fb0732e9e1778a18c0d2c229232d179
diff --git a/iconloaderlib/build.gradle b/iconloaderlib/build.gradle
index d080293..a6433ad 100644
--- a/iconloaderlib/build.gradle
+++ b/iconloaderlib/build.gradle
@@ -37,6 +37,11 @@
tasks.withType(JavaCompile) {
options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
}
+
+ compileOptions {
+ sourceCompatibility JavaVersion.VERSION_1_8
+ targetCompatibility JavaVersion.VERSION_1_8
+ }
}
diff --git a/iconloaderlib/src/com/android/launcher3/icons/BitmapRenderer.java b/iconloaderlib/src/com/android/launcher3/icons/BitmapRenderer.java
new file mode 100644
index 0000000..a66b929
--- /dev/null
+++ b/iconloaderlib/src/com/android/launcher3/icons/BitmapRenderer.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2017 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.icons;
+
+import android.annotation.TargetApi;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Picture;
+import android.os.Build;
+
+/**
+ * Interface representing a bitmap draw operation.
+ */
+public interface BitmapRenderer {
+
+ boolean USE_HARDWARE_BITMAP = Build.VERSION.SDK_INT >= Build.VERSION_CODES.P;
+
+ static Bitmap createSoftwareBitmap(int width, int height, BitmapRenderer renderer) {
+ Bitmap result = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
+ renderer.draw(new Canvas(result));
+ return result;
+ }
+
+ @TargetApi(Build.VERSION_CODES.P)
+ static Bitmap createHardwareBitmap(int width, int height, BitmapRenderer renderer) {
+ if (!USE_HARDWARE_BITMAP) {
+ return createSoftwareBitmap(width, height, renderer);
+ }
+
+ Picture picture = new Picture();
+ renderer.draw(picture.beginRecording(width, height));
+ picture.endRecording();
+ return Bitmap.createBitmap(picture);
+ }
+
+ void draw(Canvas out);
+}
diff --git a/iconloaderlib/src/com/android/launcher3/util/ComponentKey.java b/iconloaderlib/src/com/android/launcher3/util/ComponentKey.java
new file mode 100644
index 0000000..34bed94
--- /dev/null
+++ b/iconloaderlib/src/com/android/launcher3/util/ComponentKey.java
@@ -0,0 +1,59 @@
+package com.android.launcher3.util;
+
+/**
+ * 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.
+ */
+
+import android.content.ComponentName;
+import android.os.UserHandle;
+
+import java.util.Arrays;
+
+public class ComponentKey {
+
+ public final ComponentName componentName;
+ public final UserHandle user;
+
+ private final int mHashCode;
+
+ public ComponentKey(ComponentName componentName, UserHandle user) {
+ if (componentName == null || user == null) {
+ throw new NullPointerException();
+ }
+ this.componentName = componentName;
+ this.user = user;
+ mHashCode = Arrays.hashCode(new Object[] {componentName, user});
+
+ }
+
+ @Override
+ public int hashCode() {
+ return mHashCode;
+ }
+
+ @Override
+ public boolean equals(Object o) {
+ ComponentKey other = (ComponentKey) o;
+ return other.componentName.equals(componentName) && other.user.equals(user);
+ }
+
+ /**
+ * Encodes a component key as a string of the form [flattenedComponentString#userId].
+ */
+ @Override
+ public String toString() {
+ return componentName.flattenToString() + "#" + user;
+ }
+}
\ No newline at end of file
diff --git a/iconloaderlib/src/com/android/launcher3/util/NoLocaleSQLiteHelper.java b/iconloaderlib/src/com/android/launcher3/util/NoLocaleSQLiteHelper.java
new file mode 100644
index 0000000..fe864a2
--- /dev/null
+++ b/iconloaderlib/src/com/android/launcher3/util/NoLocaleSQLiteHelper.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2018 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.util;
+
+import static android.database.sqlite.SQLiteDatabase.NO_LOCALIZED_COLLATORS;
+
+import android.content.Context;
+import android.content.ContextWrapper;
+import android.database.DatabaseErrorHandler;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteDatabase.CursorFactory;
+import android.database.sqlite.SQLiteDatabase.OpenParams;
+import android.database.sqlite.SQLiteOpenHelper;
+import android.os.Build;
+
+/**
+ * Extension of {@link SQLiteOpenHelper} which avoids creating default locale table by
+ * A context wrapper which creates databases without support for localized collators.
+ */
+public abstract class NoLocaleSQLiteHelper extends SQLiteOpenHelper {
+
+ private static final boolean ATLEAST_P =
+ Build.VERSION.SDK_INT >= Build.VERSION_CODES.P;
+
+ public NoLocaleSQLiteHelper(Context context, String name, int version) {
+ super(ATLEAST_P ? context : new NoLocalContext(context), name, null, version);
+ if (ATLEAST_P) {
+ setOpenParams(new OpenParams.Builder().addOpenFlags(NO_LOCALIZED_COLLATORS).build());
+ }
+ }
+
+ private static class NoLocalContext extends ContextWrapper {
+ public NoLocalContext(Context base) {
+ super(base);
+ }
+
+ @Override
+ public SQLiteDatabase openOrCreateDatabase(
+ String name, int mode, CursorFactory factory, DatabaseErrorHandler errorHandler) {
+ return super.openOrCreateDatabase(
+ name, mode | Context.MODE_NO_LOCALIZED_COLLATORS, factory, errorHandler);
+ }
+ }
+}
diff --git a/iconloaderlib/src/com/android/launcher3/util/Provider.java b/iconloaderlib/src/com/android/launcher3/util/Provider.java
new file mode 100644
index 0000000..4a54c0f
--- /dev/null
+++ b/iconloaderlib/src/com/android/launcher3/util/Provider.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2016 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.util;
+
+/**
+ * Utility class to allow lazy initialization of objects.
+ */
+public interface Provider<T> {
+
+ /**
+ * Initializes and returns the object. This may contain expensive operations not suitable
+ * to UI thread.
+ */
+ T get();
+
+ static <T> Provider<T> of (T value) {
+ return() -> value;
+ }
+}
diff --git a/iconloaderlib/src/com/android/launcher3/util/SQLiteCacheHelper.java b/iconloaderlib/src/com/android/launcher3/util/SQLiteCacheHelper.java
new file mode 100644
index 0000000..49de4bd
--- /dev/null
+++ b/iconloaderlib/src/com/android/launcher3/util/SQLiteCacheHelper.java
@@ -0,0 +1,125 @@
+package com.android.launcher3.util;
+
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteException;
+import android.database.sqlite.SQLiteFullException;
+import android.database.sqlite.SQLiteOpenHelper;
+import android.util.Log;
+
+/**
+ * An extension of {@link SQLiteOpenHelper} with utility methods for a single table cache DB.
+ * Any exception during write operations are ignored, and any version change causes a DB reset.
+ */
+public abstract class SQLiteCacheHelper {
+ private static final String TAG = "SQLiteCacheHelper";
+
+ private static final boolean IN_MEMORY_CACHE = false;
+
+ private final String mTableName;
+ private final MySQLiteOpenHelper mOpenHelper;
+
+ private boolean mIgnoreWrites;
+
+ public SQLiteCacheHelper(Context context, String name, int version, String tableName) {
+ if (IN_MEMORY_CACHE) {
+ name = null;
+ }
+ mTableName = tableName;
+ mOpenHelper = new MySQLiteOpenHelper(context, name, version);
+
+ mIgnoreWrites = false;
+ }
+
+ /**
+ * @see SQLiteDatabase#delete(String, String, String[])
+ */
+ public void delete(String whereClause, String[] whereArgs) {
+ if (mIgnoreWrites) {
+ return;
+ }
+ try {
+ mOpenHelper.getWritableDatabase().delete(mTableName, whereClause, whereArgs);
+ } catch (SQLiteFullException e) {
+ onDiskFull(e);
+ } catch (SQLiteException e) {
+ Log.d(TAG, "Ignoring sqlite exception", e);
+ }
+ }
+
+ /**
+ * @see SQLiteDatabase#insertWithOnConflict(String, String, ContentValues, int)
+ */
+ public void insertOrReplace(ContentValues values) {
+ if (mIgnoreWrites) {
+ return;
+ }
+ try {
+ mOpenHelper.getWritableDatabase().insertWithOnConflict(
+ mTableName, null, values, SQLiteDatabase.CONFLICT_REPLACE);
+ } catch (SQLiteFullException e) {
+ onDiskFull(e);
+ } catch (SQLiteException e) {
+ Log.d(TAG, "Ignoring sqlite exception", e);
+ }
+ }
+
+ private void onDiskFull(SQLiteFullException e) {
+ Log.e(TAG, "Disk full, all write operations will be ignored", e);
+ mIgnoreWrites = true;
+ }
+
+ /**
+ * @see SQLiteDatabase#query(String, String[], String, String[], String, String, String)
+ */
+ public Cursor query(String[] columns, String selection, String[] selectionArgs) {
+ return mOpenHelper.getReadableDatabase().query(
+ mTableName, columns, selection, selectionArgs, null, null, null);
+ }
+
+ public void clear() {
+ mOpenHelper.clearDB(mOpenHelper.getWritableDatabase());
+ }
+
+ public void close() {
+ mOpenHelper.close();
+ }
+
+ protected abstract void onCreateTable(SQLiteDatabase db);
+
+ /**
+ * A private inner class to prevent direct DB access.
+ */
+ private class MySQLiteOpenHelper extends NoLocaleSQLiteHelper {
+
+ public MySQLiteOpenHelper(Context context, String name, int version) {
+ super(context, name, version);
+ }
+
+ @Override
+ public void onCreate(SQLiteDatabase db) {
+ onCreateTable(db);
+ }
+
+ @Override
+ public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+ if (oldVersion != newVersion) {
+ clearDB(db);
+ }
+ }
+
+ @Override
+ public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+ if (oldVersion != newVersion) {
+ clearDB(db);
+ }
+ }
+
+ private void clearDB(SQLiteDatabase db) {
+ db.execSQL("DROP TABLE IF EXISTS " + mTableName);
+ onCreate(db);
+ }
+ }
+}