1 files changed, 75 insertions, 0 deletions
diff --git a/src/android/support/v4/view/ViewConfigurationCompat.java b/src/android/support/v4/view/ViewConfigurationCompat.java
new file mode 100644
index 0000000..fd26a27
--- /dev/null
+++ b/src/android/support/v4/view/ViewConfigurationCompat.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2011 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 android.support.v4.view;
+
+import android.view.ViewConfiguration;
+
+/**
+ * Helper for accessing features in {@link ViewConfiguration}
+ * introduced after API level 4 in a backwards compatible fashion.
+ */
+public class ViewConfigurationCompat {
+    /**
+     * Interface for the full API.
+     */
+    interface ViewConfigurationVersionImpl {
+        public int getScaledPagingTouchSlop(ViewConfiguration config);
+    }
+
+    /**
+     * Interface implementation that doesn't use anything about v4 APIs.
+     */
+    static class BaseViewConfigurationVersionImpl implements ViewConfigurationVersionImpl {
+        @Override
+        public int getScaledPagingTouchSlop(ViewConfiguration config) {
+            return config.getScaledTouchSlop();
+        }
+    }
+
+    /**
+     * Interface implementation for devices with at least v11 APIs.
+     */
+    static class FroyoViewConfigurationVersionImpl implements ViewConfigurationVersionImpl {
+        @Override
+        public int getScaledPagingTouchSlop(ViewConfiguration config) {
+            return ViewConfigurationCompatFroyo.getScaledPagingTouchSlop(config);
+        }
+    }
+
+    /**
+     * Select the correct implementation to use for the current platform.
+     */
+    static final ViewConfigurationVersionImpl IMPL;
+    static {
+        if (android.os.Build.VERSION.SDK_INT >= 11) {
+            IMPL = new FroyoViewConfigurationVersionImpl();
+        } else {
+            IMPL = new BaseViewConfigurationVersionImpl();
+        }
+    }
+
+    // -------------------------------------------------------------------
+
+    /**
+     * Call {@link ViewConfiguration#getScaledPagingTouchSlop()}.
+     * If running on a pre-{@link android.os.Build.VERSION_CODES#FROYO} device,
+     * returns {@link ViewConfiguration#getScaledTouchSlop()}.
+     */
+    public static int getScaledPagingTouchSlop(ViewConfiguration config) {
+        return IMPL.getScaledPagingTouchSlop(config);
+    }
+}