1 files changed, 199 insertions, 0 deletions
diff --git a/android/source/src/java/org/libreoffice/storage/external/DirectoryBrowserFragment.java b/android/source/src/java/org/libreoffice/storage/external/DirectoryBrowserFragment.java
new file mode 100644
index 000000000000..27cbfbce14be
--- /dev/null
+++ b/android/source/src/java/org/libreoffice/storage/external/DirectoryBrowserFragment.java
@@ -0,0 +1,199 @@
+package org.libreoffice.storage.external;
+
+import android.app.Activity;
+import android.app.Fragment;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.Environment;
+import android.support.annotation.Nullable;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ImageView;
+import android.widget.ListView;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import org.libreoffice.R;
+import org.libreoffice.storage.IOUtils;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Comparator;
+
+/**
+ * A simple directory browser.
+ */
+public class DirectoryBrowserFragment extends Fragment {
+    private static final String LOGTAG = DirectoryBrowserFragment.class.getSimpleName();
+    private static final String INITIAL_PATH_URI_KEY = "initial_path";
+    private File currentDirectory;
+    private FileArrayAdapter directoryAdapter;
+
+    public static DirectoryBrowserFragment newInstance(String initialPathURI) {
+        Bundle args = new Bundle();
+        args.putString(INITIAL_PATH_URI_KEY, initialPathURI);
+        DirectoryBrowserFragment fragment = new DirectoryBrowserFragment();
+        fragment.setArguments(args);
+        Log.d(LOGTAG, "Saved path: " + initialPathURI);
+
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        String initialPathURI = getArguments().getString(INITIAL_PATH_URI_KEY);
+        setupCurrentDirectory(initialPathURI);
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View v = inflater.inflate(R.layout.fragment_directory_browser, container, false);
+
+        final EditText directoryHeader = (EditText)v.findViewById(R.id.directory_header);
+        Button directorySearchButton = (Button)v.findViewById(R.id.directory_search_button);
+        Button positiveButton = (Button)v.findViewById(R.id.confirm_button);
+        Button negativeButton = (Button)v.findViewById(R.id.cancel_button);
+        ImageView upImage = (ImageView)v.findViewById(R.id.up_image);
+        ListView directoryListView = (ListView) v.findViewById(R.id.directory_list);
+
+        directoryHeader.setText(currentDirectory.getPath());
+        directorySearchButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                String currentPath = currentDirectory.getAbsolutePath();
+                String enteredPath = directoryHeader.getText().toString();
+                File testDirectory = new File(enteredPath);
+                if(enteredPath.equals(currentPath)) ;
+                else if (isInvalidFileDirectory(testDirectory)) {
+                    Toast.makeText(getActivity(), R.string.bad_directory, Toast.LENGTH_SHORT)
+                            .show();
+                }
+                else {
+                   changeDirectory(testDirectory);
+                }
+            }
+        });
+
+        positiveButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent data = new Intent();
+                data.setData(Uri.fromFile(currentDirectory));
+                getActivity().setResult(Activity.RESULT_OK, data);
+                getActivity().finish();
+            }
+        });
+
+        negativeButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                getActivity().setResult(Activity.RESULT_CANCELED, null);
+                getActivity().finish();
+            }
+        });
+
+        upImage.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                changeDirectory(currentDirectory.getParentFile());
+            }
+        });
+
+        directoryAdapter = new FileArrayAdapter(getActivity(), new ArrayList<File>());
+        directoryAdapter.populateFileList(currentDirectory);
+        directoryListView.setAdapter(directoryAdapter);
+        directoryListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+                changeDirectory(directoryAdapter.getItem(position));
+            }
+        });
+
+        return v;
+    }
+
+    private void changeDirectory(File destination) {
+        if(destination == null) {
+            Toast.makeText(getActivity(), "Unable to go further.", Toast.LENGTH_SHORT)
+                    .show();
+        } else {
+            Fragment fragment = DirectoryBrowserFragment.newInstance(destination.toURI().toString());
+            getActivity().getFragmentManager().beginTransaction()
+                    .replace(R.id.fragment_container, fragment)
+                    .addToBackStack(null)
+                    .commit();
+        }
+    }
+
+    private void setupCurrentDirectory(String initialPathURI) {
+        File initialDirectory = null;
+        if(initialPathURI != null && !initialPathURI.isEmpty()) {
+            initialDirectory = IOUtils.getFileFromURIString(initialPathURI);
+        }
+
+        if(isInvalidFileDirectory(initialDirectory)) {
+            initialDirectory = Environment.getExternalStorageDirectory();
+        }
+        currentDirectory = initialDirectory;
+    }
+
+    private boolean isInvalidFileDirectory(File f) {
+        return f == null || !f.exists() || !f.isDirectory() ||!f.canRead();
+    }
+
+    private class FileArrayAdapter extends ArrayAdapter<File> {
+        private Comparator<File> caseInsensitiveNaturalOrderComparator;
+
+        public FileArrayAdapter(Context context, ArrayList<File> files) {
+            super(context, 0, files);
+            caseInsensitiveNaturalOrderComparator = new AlphabeticalFileComparator();
+        }
+
+        @Override
+        public View getView(int position, View convertView, ViewGroup parent) {
+            if (convertView == null) {
+                convertView = getActivity().getLayoutInflater()
+                        .inflate(android.R.layout.simple_list_item_1, null);
+            }
+
+            File f = this.getItem(position);
+            TextView tv = (TextView) convertView.findViewById(android.R.id.text1);
+            tv.setText(f.getName());
+
+            return convertView;
+        }
+
+        public void sortAlphabetically() {
+            this.sort(caseInsensitiveNaturalOrderComparator);
+        }
+
+        public void populateFileList(File directory) {
+            for(File f : directory.listFiles()){
+                if(f.isDirectory()){
+                    directoryAdapter.add(f);
+                }
+            }
+            directoryAdapter.sortAlphabetically();
+        }
+    }
+
+    private class AlphabeticalFileComparator implements Comparator<File> {
+        @Override
+        public int compare(File lhs, File rhs) {
+            String lhsName = lhs.getName();
+            String rhsName = rhs.getName();
+
+            return lhsName.compareToIgnoreCase(rhsName);
+        }
+    }
+}