import android.app.AlertDialog;
import android.content.ContentValues;
import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.res.Resources;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.Cursor;
+import android.net.Uri;
import android.os.Message;
import java.util.List;
import java.util.ArrayList;
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.client.android.Intents;
import com.google.zxing.client.android.R;
import com.google.zxing.client.android.CaptureActivity;
import com.google.zxing.Result;
/**
+ * <p>Manages functionality related to scan history.</p>
+ *
* @author Sean Owen
*/
public final class HistoryManager {
+ private static final int MAX_ITEMS = 50;
+ private static final String[] TEXT_COL_PROJECTION = { DBHelper.TEXT_COL };
+ private static final String[] TEXT_FORMAT_COL_PROJECTION = { DBHelper.TEXT_COL, DBHelper.FORMAT_COL };
+ private static final String[] ID_COL_PROJECTION = { DBHelper.ID_COL };
+
private final CaptureActivity activity;
public HistoryManager(CaptureActivity activity) {
this.activity = activity;
}
- List<String> getHistoryItems() {
-
+ List<Result> getHistoryItems() {
SQLiteOpenHelper helper = new DBHelper(activity);
+ List<Result> items = new ArrayList<Result>();
SQLiteDatabase db = helper.getReadableDatabase();
- List<String> items = new ArrayList<String>();
+ Cursor cursor = null;
try {
- Cursor cursor = db.query(DBHelper.TABLE_NAME,
- new String[] {DBHelper.TEXT_COL},
- null, null, null, null,
- DBHelper.TIMESTAMP_COL + " DESC");
+ cursor = db.query(DBHelper.TABLE_NAME,
+ TEXT_FORMAT_COL_PROJECTION,
+ null, null, null, null,
+ DBHelper.TIMESTAMP_COL + " DESC");
while (cursor.moveToNext()) {
- items.add(cursor.getString(0));
+ Result result = new Result(cursor.getString(0), null, null, BarcodeFormat.valueOf(cursor.getString(1)));
+ items.add(result);
}
} finally {
+ if (cursor != null) {
+ cursor.close();
+ }
db.close();
}
return items;
}
public AlertDialog buildAlert() {
- List<String> items = getHistoryItems();
- final String[] dialogItems = new String[items.size() + 1];
+ final List<Result> items = getHistoryItems();
+ final String[] dialogItems = new String[items.size() + 2];
for (int i = 0; i < items.size(); i++) {
- dialogItems[i] = items.get(i);
+ dialogItems[i] = items.get(i).getText();
}
- dialogItems[dialogItems.length - 1] = activity.getResources().getString(R.string.history_clear_text);
+ final Resources res = activity.getResources();
+ dialogItems[dialogItems.length - 2] = res.getString(R.string.history_send);
+ dialogItems[dialogItems.length - 1] = res.getString(R.string.history_clear_text);
DialogInterface.OnClickListener clickListener = new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialogInterface, int i) {
if (i == dialogItems.length - 1) {
clearHistory();
+ } else if (i == dialogItems.length - 2) {
+ String history = buildHistory();
+ Intent intent = new Intent(Intent.ACTION_SEND, Uri.parse("mailto:"));
+ intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
+ intent.putExtra(Intent.EXTRA_SUBJECT, res.getString(R.string.history_email_title));
+ intent.putExtra(Intent.EXTRA_TEXT, history);
+ intent.setType("text/plain");
+ activity.startActivity(intent);
} else {
- Result result = new Result(dialogItems[i], null, null, null);
+ Result result = items.get(i);
Message message = Message.obtain(activity.getHandler(), R.id.decode_succeeded, result);
message.sendToTarget();
}
return builder.create();
}
- public void addHistoryItem(String text) {
+ public void addHistoryItem(Result result) {
- if (getHistoryItems().contains(text)) {
- return;
+ if (!activity.getIntent().getBooleanExtra(Intents.Scan.SAVE_HISTORY, true)) {
+ return; // Do not save this item to the history.
}
SQLiteOpenHelper helper = new DBHelper(activity);
SQLiteDatabase db = helper.getWritableDatabase();
+ Cursor cursor = null;
try {
+ cursor = db.query(DBHelper.TABLE_NAME,
+ TEXT_COL_PROJECTION,
+ DBHelper.TEXT_COL + "=?",
+ new String[] { result.getText() },
+ null, null, null, null);
+ if (cursor.moveToNext()) {
+ return;
+ }
ContentValues values = new ContentValues();
- values.put(DBHelper.TEXT_COL, text);
+ values.put(DBHelper.TEXT_COL, result.getText());
+ values.put(DBHelper.FORMAT_COL, result.getBarcodeFormat().toString());
+ values.put(DBHelper.DISPLAY_COL, result.getText()); // TODO use parsed result display value?
values.put(DBHelper.TIMESTAMP_COL, System.currentTimeMillis());
db.insert(DBHelper.TABLE_NAME, DBHelper.TIMESTAMP_COL, values);
} finally {
+ if (cursor != null) {
+ cursor.close();
+ }
+ db.close();
+ }
+ }
+
+ public void trimHistory() {
+ SQLiteOpenHelper helper = new DBHelper(activity);
+ SQLiteDatabase db = helper.getWritableDatabase();
+ Cursor cursor = null;
+ try {
+ cursor = db.query(DBHelper.TABLE_NAME,
+ ID_COL_PROJECTION,
+ null, null, null, null,
+ DBHelper.TIMESTAMP_COL + " DESC");
+ int count = 0;
+ while (count < MAX_ITEMS && cursor.moveToNext()) {
+ count++;
+ }
+ while (cursor.moveToNext()) {
+ db.delete(DBHelper.TABLE_NAME, DBHelper.ID_COL + '=' + cursor.getString(0), null);
+ }
+ } finally {
+ if (cursor != null) {
+ cursor.close();
+ }
+ db.close();
+ }
+ }
+
+ private String buildHistory() {
+ StringBuilder historyText = new StringBuilder();
+ SQLiteOpenHelper helper = new DBHelper(activity);
+ SQLiteDatabase db = helper.getReadableDatabase();
+ Cursor cursor = null;
+ try {
+ cursor = db.query(DBHelper.TABLE_NAME,
+ TEXT_COL_PROJECTION,
+ null, null, null, null,
+ DBHelper.TIMESTAMP_COL + " DESC");
+ while (cursor.moveToNext()) {
+ historyText.append(cursor.getString(0)).append('\n');
+ }
+ } finally {
+ if (cursor != null) {
+ cursor.close();
+ }
db.close();
}
+ return historyText.toString();
}
void clearHistory() {
projects / zxing.git / blobdiff