Create StorageHelper, and redesign BookmarksActivity (II)

diff --git a/src/com/cyanogenmod/explorer/util/StorageHelper.java b/src/com/cyanogenmod/explorer/util/StorageHelper.java
new file mode 100644 (file)
index 0000000..9a0abff
--- /dev/null
+++ b/src/com/cyanogenmod/explorer/util/StorageHelper.java
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2012 The CyanogenMod 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.cyanogenmod.explorer.util;
+
+import android.content.Context;
+import android.os.Environment;
+import android.os.storage.StorageManager;
+import android.os.storage.StorageVolume;
+
+import com.cyanogenmod.explorer.R;
+
+import java.io.File;
+import java.lang.reflect.Method;
+
+
+/**
+ * A helper class with useful methods for deal with storages.
+ */
+public final class StorageHelper {
+
+    /**
+     * Method that returns the storage volumes defined in the system.  This method uses
+     * reflection to retrieve the method because CM10 has a {@link Context}
+     * as first parameter, that AOSP hasn't.
+     * 
+     * @param ctx The current context
+     * @return StorageVolume[] The storage volumes defined in the system
+     */
+    public static StorageVolume[] getStorageVolumes(Context ctx) {
+        //IMP!! Android SDK doesn't have a "getVolumeList" but is supported by CM10.
+        //Use reflect to get this value (if possible)
+        try {
+            StorageManager sm = (StorageManager) ctx.getSystemService(Context.STORAGE_SERVICE);
+            Method method = sm.getClass().getMethod("getVolumeList"); //$NON-NLS-1$
+            return (StorageVolume[])method.invoke(sm);
+        } catch (Exception ex) {
+            //Ignore. Android SDK StorageManager class doesn't have this method
+            //Use default android information from environment
+            try {
+                File externalStorage = Environment.getExternalStorageDirectory();
+                String path = externalStorage.getCanonicalPath();
+                String description = null;
+                if (path.toLowerCase().indexOf("usb") != -1) { //$NON-NLS-1$
+                    description = ctx.getString(R.string.usb_storage);
+                } else {
+                    description = ctx.getString(R.string.external_storage);
+                }
+                StorageVolume sv =new StorageVolume(path, description, false, false, 0, false, 0);
+                return new StorageVolume[]{sv};
+            } catch (Exception ex2) {
+                /**NON BLOCK**/
+            }
+        }
+        return new StorageVolume[]{};
+    }
+
+    /**
+     * Method that returns the storage volume description. This method uses
+     * reflection to retrieve the description because CM10 has a {@link Context}
+     * as first parameter, that AOSP hasn't.
+     *
+     * @param ctx The current context
+     * @param volume The storage volume
+     * @return String The description of the storage volume
+     */
+    public static String getStorageVolumeDescription(Context ctx, StorageVolume volume) {
+        try {
+            Method method = volume.getClass().getMethod(
+                                            "getDescription", //$NON-NLS-1$
+                                            new Class[]{Context.class});
+            if (method == null) {
+                // AOSP
+                method = volume.getClass().getMethod("getDescription"); //$NON-NLS-1$
+                return (String)method.invoke(volume);
+            }
+
+            // CM10
+            return (String)method.invoke(volume, ctx);
+
+        } catch (Throwable _throw) {
+            // Returns the volume storage path
+            return volume.getPath();
+        }
+    }
+
+}