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author | Vincent Breitmoser <valodim@mugenguild.com> | 2015-08-27 16:13:32 +0200 |
---|---|---|
committer | Vincent Breitmoser <valodim@mugenguild.com> | 2015-08-27 16:13:32 +0200 |
commit | 9e3c0415497eb72b66bf7300df72966732f036c6 (patch) | |
tree | 1836e8d2a21b6a50eea8c07fe6914ac3c59d79d6 /OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util | |
parent | 905e738621e43908e5dd19894544acf97f9076e4 (diff) | |
download | open-keychain-9e3c0415497eb72b66bf7300df72966732f036c6.tar.gz open-keychain-9e3c0415497eb72b66bf7300df72966732f036c6.tar.bz2 open-keychain-9e3c0415497eb72b66bf7300df72966732f036c6.zip |
some cleanup in FileHelper, and allow input of filename during export
Diffstat (limited to 'OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util')
-rw-r--r-- | OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ExportHelper.java | 2 | ||||
-rw-r--r-- | OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FileHelper.java | 197 |
2 files changed, 117 insertions, 82 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ExportHelper.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ExportHelper.java index 72620e712..45dc33906 100644 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ExportHelper.java +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ExportHelper.java @@ -69,7 +69,7 @@ public class ExportHelper : R.string.specify_backup_dest_single); } - FileHelper.saveFile(new FileHelper.FileDialogCallback() { + FileHelper.saveDocumentDialog(new FileHelper.FileDialogCallback() { @Override public void onFileSelected(File file, boolean checked) { mExportFile = file; diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FileHelper.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FileHelper.java index 4a00f46cb..9fb362412 100644 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FileHelper.java +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FileHelper.java @@ -28,16 +28,19 @@ import android.graphics.Bitmap; import android.graphics.Point; import android.net.Uri; import android.os.Build; +import android.os.Build.VERSION_CODES; import android.os.Environment; import android.os.Handler; import android.os.Message; import android.os.Messenger; import android.provider.DocumentsContract; import android.provider.OpenableColumns; +import android.support.annotation.StringRes; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.widget.Toast; +import org.sufficientlysecure.keychain.Constants; import org.sufficientlysecure.keychain.R; import org.sufficientlysecure.keychain.compatibility.DialogFragmentWorkaround; import org.sufficientlysecure.keychain.ui.dialog.FileDialogFragment; @@ -46,42 +49,95 @@ import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.ByteArrayOutputStream; import java.io.File; -import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.io.UnsupportedEncodingException; import java.text.DecimalFormat; + +/** This class offers a number of helper functions for saving documents. + * + * There are three entry points here: openDocument, saveDocument and + * saveDocumentDialog. Each behaves a little differently depending on whether + * the Android version used is pre or post KitKat. + * + * - openDocument queries for a document for reading. Used in "open encrypted + * file" ui flow. On pre-kitkat, this relies on an external file manager, + * and will fail with a toast message if none is installed. + * + * - saveDocument queries for a document name for saving. on pre-kitkat, this + * shows a dialog where a filename can be input. on kitkat and up, it + * directly triggers a "save document" intent. Used in "save encrypted file" + * ui flow. + * + * - saveDocumentDialog queries for a document. this shows a dialog on all + * versions of android. the browse button opens an external browser on + * pre-kitkat or the "save document" intent on post-kitkat devices. Used in + * "backup key" ui flow. + * + * It is noteworthy that the "saveDocument" call is essentially substituted + * by the "saveDocumentDialog" on pre-kitkat devices. + * + */ public class FileHelper { - /** - * Checks if external storage is mounted if file is located on external storage - * - * @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; - } + public static void openDocument(Fragment fragment, Uri last, String mimeType, boolean multiple, int requestCode) { + if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { + openDocumentPreKitKat(fragment, last, mimeType, multiple, requestCode); + } else { + openDocumentKitKat(fragment, mimeType, multiple, requestCode); } + } - return true; + public static void saveDocument(Fragment fragment, String targetName, Uri inputUri, + @StringRes int title, @StringRes int message, int requestCode) { + saveDocument(fragment, targetName, inputUri, "*/*", title, message, requestCode); } - /** - * Opens the preferred installed file manager on Android and shows a toast if no manager is - * installed. - * - * @param last default selected Uri, 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(Fragment fragment, Uri last, String mimeType, int requestCode) { + public static void saveDocument(Fragment fragment, String targetName, Uri inputUri, String mimeType, + @StringRes int title, @StringRes int message, int requestCode) { + if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { + saveDocumentDialog(fragment, targetName, inputUri, title, message, requestCode); + } else { + saveDocumentKitKat(fragment, mimeType, targetName, requestCode); + } + } + + public static void saveDocumentDialog(final Fragment fragment, String targetName, Uri inputUri, + @StringRes int title, @StringRes int message, final int requestCode) { + + saveDocumentDialog(fragment, targetName, inputUri, title, message, new FileDialogCallback() { + // is this a good idea? seems hacky... + @Override + public void onFileSelected(File file, boolean checked) { + Intent intent = new Intent(); + intent.setData(Uri.fromFile(file)); + fragment.onActivityResult(requestCode, Activity.RESULT_OK, intent); + } + }); + } + + public static void saveDocumentDialog(final Fragment fragment, String targetName, Uri inputUri, + @StringRes int title, @StringRes int message, FileDialogCallback callback) { + + File file = inputUri == null ? null : new File(inputUri.getPath()); + File parentDir = file != null && file.exists() ? file.getParentFile() : Constants.Path.APP_DIR; + File targetFile = new File(parentDir, targetName); + saveDocumentDialog(callback, fragment.getActivity().getSupportFragmentManager(), + fragment.getString(title), fragment.getString(message), targetFile, null); + + } + + /** Opens the preferred installed file manager on Android and shows a toast + * if no manager is installed. */ + private static void openDocumentPreKitKat( + Fragment fragment, Uri last, String mimeType, boolean multiple, int requestCode) { + Intent intent = new Intent(Intent.ACTION_GET_CONTENT); intent.addCategory(Intent.CATEGORY_OPENABLE); - + if (Build.VERSION.SDK_INT >= VERSION_CODES.JELLY_BEAN_MR2) { + intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, multiple); + } intent.setData(last); intent.setType(mimeType); @@ -92,11 +148,34 @@ public class FileHelper { Toast.makeText(fragment.getActivity(), R.string.no_filemanager_installed, Toast.LENGTH_SHORT).show(); } + + } + + /** Opens the storage browser on Android 4.4 or later for opening a file */ + @TargetApi(Build.VERSION_CODES.KITKAT) + private static void openDocumentKitKat(Fragment fragment, String mimeType, boolean multiple, int requestCode) { + Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT); + intent.addCategory(Intent.CATEGORY_OPENABLE); + intent.setType(mimeType); + intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, multiple); + fragment.startActivityForResult(intent, requestCode); + } + + /** Opens the storage browser on Android 4.4 or later for saving a file. */ + @TargetApi(Build.VERSION_CODES.KITKAT) + public static void saveDocumentKitKat(Fragment fragment, String mimeType, String suggestedName, int requestCode) { + Intent intent = new Intent(Intent.ACTION_CREATE_DOCUMENT); + intent.addCategory(Intent.CATEGORY_OPENABLE); + intent.setType(mimeType); + intent.putExtra("android.content.extra.SHOW_ADVANCED", true); // Note: This is not documented, but works + intent.putExtra(Intent.EXTRA_TITLE, suggestedName); + fragment.startActivityForResult(intent, requestCode); } - public static void saveFile(final FileDialogCallback callback, final FragmentManager fragmentManager, - final String title, final String message, final File defaultFile, - final String checkMsg) { + public static void saveDocumentDialog( + final FileDialogCallback callback, final FragmentManager fragmentManager, + final String title, final String message, final File defaultFile, + final String checkMsg) { // Message is received after file is selected Handler returnHandler = new Handler() { @Override @@ -123,61 +202,6 @@ public class FileHelper { }); } - public static void saveFile(Fragment fragment, String title, String message, File defaultFile, int requestCode) { - saveFile(fragment, title, message, defaultFile, requestCode, null); - } - - public static void saveFile(final Fragment fragment, String title, String message, File defaultFile, - final int requestCode, String checkMsg) { - saveFile(new FileDialogCallback() { - @Override - public void onFileSelected(File file, boolean checked) { - Intent intent = new Intent(); - intent.setData(Uri.fromFile(file)); - fragment.onActivityResult(requestCode, Activity.RESULT_OK, intent); - } - }, fragment.getActivity().getSupportFragmentManager(), title, message, defaultFile, checkMsg); - } - - @TargetApi(Build.VERSION_CODES.KITKAT) - public static void openDocument(Fragment fragment, String mimeType, int requestCode) { - openDocument(fragment, mimeType, false, requestCode); - } - - /** - * Opens the storage browser on Android 4.4 or later for opening a file - * - * @param mimeType can be text/plain for example - * @param multiple allow file chooser to return multiple files - * @param requestCode used to identify the result coming back from storage browser onActivityResult() in your - */ - @TargetApi(Build.VERSION_CODES.KITKAT) - public static void openDocument(Fragment fragment, String mimeType, boolean multiple, int requestCode) { - Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT); - intent.addCategory(Intent.CATEGORY_OPENABLE); - intent.setType(mimeType); - intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, multiple); - - fragment.startActivityForResult(intent, requestCode); - } - - /** - * Opens the storage browser on Android 4.4 or later for saving a file - * - * @param mimeType can be text/plain for example - * @param suggestedName a filename desirable for the file to be saved - * @param requestCode used to identify the result coming back from storage browser onActivityResult() in your - */ - @TargetApi(Build.VERSION_CODES.KITKAT) - public static void saveDocument(Fragment fragment, String mimeType, String suggestedName, int requestCode) { - Intent intent = new Intent(Intent.ACTION_CREATE_DOCUMENT); - intent.addCategory(Intent.CATEGORY_OPENABLE); - intent.setType(mimeType); - intent.putExtra("android.content.extra.SHOW_ADVANCED", true); // Note: This is not documented, but works - intent.putExtra(Intent.EXTRA_TITLE, suggestedName); - fragment.startActivityForResult(intent, requestCode); - } - public static String getFilename(Context context, Uri uri) { String filename = null; try { @@ -298,6 +322,17 @@ public class FileHelper { } } + /** Checks if external storage is mounted if file is located on external storage. */ + public static boolean isStorageMounted(String file) { + if (file.startsWith(Environment.getExternalStorageDirectory().getAbsolutePath())) { + if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { + return false; + } + } + + return true; + } + public interface FileDialogCallback { void onFileSelected(File file, boolean checked); } |