X-Git-Url: http://git.linex4red.de/pub/Android/ownCloud.git/blobdiff_plain/b22dc8bce6f43c832468b4fa0c0ba0d1d4eb59d8..7cc88a22d183a5bc82ddbd30945789d58e0a753b:/src/com/owncloud/android/ui/preview/PreviewTextFragment.java

diff --git a/src/com/owncloud/android/ui/preview/PreviewTextFragment.java b/src/com/owncloud/android/ui/preview/PreviewTextFragment.java
new file mode 100644
index 00000000..d0a678c8
--- /dev/null
+++ b/src/com/owncloud/android/ui/preview/PreviewTextFragment.java
@@ -0,0 +1,341 @@
+package com.owncloud.android.ui.preview;
+
+import android.accounts.Account;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ProgressBar;
+import android.widget.ScrollView;
+import android.widget.TextView;
+
+import com.actionbarsherlock.view.Menu;
+import com.actionbarsherlock.view.MenuInflater;
+import com.actionbarsherlock.view.MenuItem;
+import com.owncloud.android.R;
+import com.owncloud.android.datamodel.OCFile;
+import com.owncloud.android.files.FileMenuFilter;
+import com.owncloud.android.lib.common.utils.Log_OC;
+import com.owncloud.android.ui.activity.FileDisplayActivity;
+import com.owncloud.android.ui.dialog.ConfirmationDialogFragment;
+import com.owncloud.android.ui.dialog.RemoveFileDialogFragment;
+import com.owncloud.android.ui.fragment.FileFragment;
+
+import java.io.BufferedWriter;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.StringWriter;
+import java.util.Scanner;
+
+public class PreviewTextFragment extends FileFragment {
+    private static final String EXTRA_FILE = "FILE";
+    private static final String EXTRA_ACCOUNT = "ACCOUNT";
+    private static final String TAG = PreviewTextFragment.class.getSimpleName();
+
+    private Account mAccount;
+    private TextView mTextPreview;
+    private ProgressBar mProgressBar;
+    private ScrollView mScrollView;
+
+    /**
+     * Creates an empty fragment for previews.
+     * <p/>
+     * MUST BE KEPT: the system uses it when tries to reinstantiate a fragment automatically
+     * (for instance, when the device is turned a aside).
+     * <p/>
+     * DO NOT CALL IT: an {@link OCFile} and {@link Account} must be provided for a successful
+     * construction
+     */
+    public PreviewTextFragment() {
+        super();
+        mAccount = null;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        super.onCreateView(inflater, container, savedInstanceState);
+        Log_OC.e(TAG, "onCreateView");
+
+
+        View ret = inflater.inflate(R.layout.text_file_preview, container, false);
+
+        mScrollView = (ScrollView) ret.findViewById(R.id.text_scrollview);
+        mTextPreview = (TextView) ret.findViewById(R.id.text_preview);
+        mProgressBar = (ProgressBar) ret.findViewById(R.id.progress_bar);
+
+        return ret;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        OCFile file = getFile();
+
+        Bundle args = getArguments();
+
+        if (file == null)
+            file = args.getParcelable(FileDisplayActivity.EXTRA_FILE);
+
+        if (mAccount == null)
+            mAccount = args.getParcelable(FileDisplayActivity.EXTRA_ACCOUNT);
+
+
+        if (savedInstanceState == null) {
+            if (file == null) {
+                throw new IllegalStateException("Instanced with a NULL OCFile");
+            }
+            if (mAccount == null) {
+                throw new IllegalStateException("Instanced with a NULL ownCloud Account");
+            }
+        } else {
+            file = savedInstanceState.getParcelable(EXTRA_FILE);
+            mAccount = savedInstanceState.getParcelable(EXTRA_ACCOUNT);
+        }
+        setFile(file);
+        setHasOptionsMenu(true);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putParcelable(PreviewImageFragment.EXTRA_FILE, getFile());
+        outState.putParcelable(PreviewImageFragment.EXTRA_ACCOUNT, mAccount);
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        Log_OC.e(TAG, "onStart");
+
+        loadAndShowTextPreview(getFile().getStoragePath(), mTextPreview);
+    }
+
+    private void loadAndShowTextPreview(String location, TextView textView) {
+        new TextLoadAsyncTask().execute(location, textView);
+    }
+
+    /**
+     * Reads the file to preview and shows its contents. Too critical to be anonymous.
+     */
+    private class TextLoadAsyncTask extends AsyncTask<Object, Void, StringWriter> {
+        TextView mTextView;
+
+        @Override
+        protected void onPreExecute() {
+            mProgressBar.setVisibility(View.VISIBLE);
+        }
+
+        @Override
+        protected StringWriter doInBackground(java.lang.Object... params) {
+            if (params.length != 2)
+                throw new IllegalArgumentException("The parameters to " + TextLoadAsyncTask.class.getName() + " must be (1) the file location and (2) the text view to update");
+            final String location = (String) params[0];
+            mTextView = (TextView) params[1];
+
+            FileInputStream inputStream = null;
+            Scanner sc = null;
+            StringWriter source = new StringWriter();
+            BufferedWriter bufferedWriter = new BufferedWriter(source);
+            try {
+                inputStream = new FileInputStream(location);
+                sc = new Scanner(inputStream);
+                while (sc.hasNextLine()) {
+                    bufferedWriter.append(sc.nextLine());
+                    if (sc.hasNextLine()) bufferedWriter.append("\n");
+                }
+                bufferedWriter.close();
+                IOException exc = sc.ioException();
+                if (exc != null) throw exc;
+            } catch (IOException e) {
+                finish();
+            } finally {
+                if (inputStream != null) {
+                    try {
+                        inputStream.close();
+                    } catch (IOException e) {
+                        finish();
+                    }
+                }
+                if (sc != null) {
+                    sc.close();
+                }
+            }
+            return source;
+        }
+
+        @Override
+        protected void onPostExecute(final StringWriter stringWriter) {
+            super.onPostExecute(stringWriter);
+            mProgressBar.setVisibility(View.GONE);
+            mScrollView.setVisibility(View.VISIBLE);
+            mTextView.setText(new String(stringWriter.getBuffer()));
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+        super.onCreateOptionsMenu(menu, inflater);
+        inflater.inflate(R.menu.file_actions_menu, menu);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void onPrepareOptionsMenu(Menu menu) {
+        super.onPrepareOptionsMenu(menu);
+
+        if (mContainerActivity.getStorageManager() != null) {
+            FileMenuFilter mf = new FileMenuFilter(
+                    getFile(),
+                    mContainerActivity.getStorageManager().getAccount(),
+                    mContainerActivity,
+                    getSherlockActivity()
+            );
+            mf.filter(menu);
+        }
+
+        // additional restriction for this fragment
+        MenuItem item = menu.findItem(R.id.action_rename_file);
+        if (item != null) {
+            item.setVisible(false);
+            item.setEnabled(false);
+        }
+
+        // additional restriction for this fragment
+        item = menu.findItem(R.id.action_move);
+        if (item != null) {
+            item.setVisible(false);
+            item.setEnabled(false);
+        }
+
+        // this one doesn't make sense since the file has to be down in order to be previewed
+        item = menu.findItem(R.id.action_download_file);
+        if (item != null) {
+            item.setVisible(false);
+            item.setEnabled(false);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case R.id.action_share_file: {
+                mContainerActivity.getFileOperationsHelper().shareFileWithLink(getFile());
+                return true;
+            }
+            case R.id.action_unshare_file: {
+                mContainerActivity.getFileOperationsHelper().unshareFileWithLink(getFile());
+                return true;
+            }
+            case R.id.action_open_file_with: {
+                openFile();
+                return true;
+            }
+            case R.id.action_remove_file: {
+                RemoveFileDialogFragment dialog = RemoveFileDialogFragment.newInstance(getFile());
+                dialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
+                return true;
+            }
+            case R.id.action_see_details: {
+                seeDetails();
+                return true;
+            }
+            case R.id.action_send_file: {
+                sendFile();
+                return true;
+            }
+            case R.id.action_sync_file: {
+                mContainerActivity.getFileOperationsHelper().syncFile(getFile());
+                return true;
+            }
+
+            default:
+                return false;
+        }
+    }
+
+    /**
+     * Update the file of the fragment with file value
+     *
+     * @param file
+     */
+    public void updateFile(OCFile file) {
+        setFile(file);
+    }
+
+    private void sendFile() {
+        mContainerActivity.getFileOperationsHelper().sendDownloadedFile(getFile());
+    }
+
+    private void seeDetails() {
+        mContainerActivity.showDetails(getFile());
+    }
+
+    @Override
+    public void onPause() {
+        Log_OC.e(TAG, "onPause");
+        super.onPause();
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        Log_OC.e(TAG, "onResume");
+    }
+
+    @Override
+    public void onDestroy() {
+        Log_OC.e(TAG, "onDestroy");
+        super.onDestroy();
+    }
+
+    @Override
+    public void onStop() {
+        super.onStop();
+        Log_OC.e(TAG, "onStop");
+    }
+
+    /**
+     * Opens the previewed file with an external application.
+     */
+    private void openFile() {
+        mContainerActivity.getFileOperationsHelper().openFile(getFile());
+        finish();
+    }
+
+    /**
+     * Helper method to test if an {@link OCFile} can be passed to a {@link PreviewTextFragment} to be previewed.
+     *
+     * @param file File to test if can be previewed.
+     * @return 'True' if the file can be handled by the fragment.
+     */
+    public static boolean canBePreviewed(OCFile file) {
+        return (file != null && file.isDown() && file.isText());
+    }
+
+    /**
+     * Finishes the preview
+     */
+    private void finish() {
+        getSherlockActivity().onBackPressed();
+    }
+}