1 files changed, 131 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/FileHelper.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/FileHelper.java
new file mode 100644
index 000000000..d24aeca52
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/FileHelper.java
@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.helper;
+
+import android.app.Activity;
+import android.content.ActivityNotFoundException;
+import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Environment;
+import android.support.v4.app.Fragment;
+import android.widget.Toast;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.util.Log;
+
+public class FileHelper {
+
+    /**
+     * Checks if external storage is mounted if file is located on external storage
+     *
+     * @param file
+     * @return true if storage is mounted
+     */
+    public static boolean isStorageMounted(String file) {
+        if (file.startsWith(Environment.getExternalStorageDirectory().getAbsolutePath())) {
+            if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Opens the preferred installed file manager on Android and shows a toast if no manager is
+     * installed.
+     *
+     * @param activity
+     * @param filename    default selected file, not supported by all file managers
+     * @param mimeType    can be text/plain for example
+     * @param requestCode requestCode used to identify the result coming back from file manager to
+     *                    onActivityResult() in your activity
+     */
+    public static void openFile(Activity activity, String filename, String mimeType, int requestCode) {
+        Intent intent = buildFileIntent(filename, mimeType);
+
+        try {
+            activity.startActivityForResult(intent, requestCode);
+        } catch (ActivityNotFoundException e) {
+            // No compatible file manager was found.
+            Toast.makeText(activity, R.string.no_filemanager_installed, Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    public static void openFile(Fragment fragment, String filename, String mimeType, int requestCode) {
+        Intent intent = buildFileIntent(filename, mimeType);
+
+        try {
+            fragment.startActivityForResult(intent, requestCode);
+        } catch (ActivityNotFoundException e) {
+            // No compatible file manager was found.
+            Toast.makeText(fragment.getActivity(), R.string.no_filemanager_installed,
+                    Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    private static Intent buildFileIntent(String filename, String mimeType) {
+        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
+        intent.addCategory(Intent.CATEGORY_OPENABLE);
+
+        intent.setData(Uri.parse("file://" + filename));
+        intent.setType(mimeType);
+
+        return intent;
+    }
+
+    /**
+     * Get a file path from a Uri.
+     * <p/>
+     * from https://github.com/iPaulPro/aFileChooser/blob/master/aFileChooser/src/com/ipaulpro/
+     * afilechooser/utils/FileUtils.java
+     *
+     * @param context
+     * @param uri
+     * @return
+     * @author paulburke
+     */
+    public static String getPath(Context context, Uri uri) {
+        Log.d(Constants.TAG + " File -",
+                "Authority: " + uri.getAuthority() + ", Fragment: " + uri.getFragment()
+                        + ", Port: " + uri.getPort() + ", Query: " + uri.getQuery() + ", Scheme: "
+                        + uri.getScheme() + ", Host: " + uri.getHost() + ", Segments: "
+                        + uri.getPathSegments().toString());
+
+        if ("content".equalsIgnoreCase(uri.getScheme())) {
+            String[] projection = {"_data"};
+            Cursor cursor = null;
+
+            try {
+                cursor = context.getContentResolver().query(uri, projection, null, null, null);
+                int columnIndex = cursor.getColumnIndexOrThrow("_data");
+                if (cursor.moveToFirst()) {
+                    return cursor.getString(columnIndex);
+                }
+            } catch (Exception e) {
+                // Eat it
+            }
+        } else if ("file".equalsIgnoreCase(uri.getScheme())) {
+            return uri.getPath();
+        }
+
+        return null;
+    }
+}