/*
 * Copyright (C) 2009 University of Washington
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package org.odk.collect.android.widgets;

import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.Intent;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TableLayout;
import android.widget.TextView;
import android.widget.Toast;

import org.javarosa.core.model.data.IAnswerData;
import org.javarosa.core.model.data.StringData;
import org.javarosa.form.api.FormEntryPrompt;
import org.odk.collect.android.R;
import org.odk.collect.android.activities.FormEntryActivity;
import org.odk.collect.android.application.Collect;

/**
 * Widget that allows user to scan barcodes and add them to the form.
 *
 * @author Yaw Anokwa (yanokwa@gmail.com)
 */
public class BarcodeWidget extends QuestionWidget implements IBinaryWidget {
    private Button mGetBarcodeButton;
    private TextView mStringAnswer;

    public BarcodeWidget(Context context, FormEntryPrompt prompt) {
        super(context, prompt);

        TableLayout.LayoutParams params = new TableLayout.LayoutParams();
        params.setMargins(7, 5, 7, 5);

        // set button formatting
        mGetBarcodeButton = new Button(getContext());
        mGetBarcodeButton.setId(QuestionWidget.newUniqueId());
        mGetBarcodeButton.setText(getContext().getString(R.string.get_barcode));
        mGetBarcodeButton.setTextSize(TypedValue.COMPLEX_UNIT_DIP,
                mAnswerFontsize);
        mGetBarcodeButton.setPadding(20, 20, 20, 20);
        mGetBarcodeButton.setEnabled(!prompt.isReadOnly());
        mGetBarcodeButton.setLayoutParams(params);

        // launch barcode capture intent on click
        mGetBarcodeButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Collect.getInstance()
                        .getActivityLogger()
                        .logInstanceAction(this, "recordBarcode", "click",
                                mPrompt.getIndex());
                Intent i = new Intent("com.google.zxing.client.android.SCAN");
                try {
                    Collect.getInstance().getFormController()
                            .setIndexWaitingForData(mPrompt.getIndex());
                    ((Activity) getContext()).startActivityForResult(i,
                            FormEntryActivity.BARCODE_CAPTURE);
                } catch (ActivityNotFoundException e) {
                    Toast.makeText(
                            getContext(),
                            getContext().getString(
                                    R.string.barcode_scanner_error),
                            Toast.LENGTH_SHORT).show();
                    Collect.getInstance().getFormController()
                            .setIndexWaitingForData(null);
                }
            }
        });

        // set text formatting
        mStringAnswer = new TextView(getContext());
        mStringAnswer.setId(QuestionWidget.newUniqueId());
        mStringAnswer.setTextSize(TypedValue.COMPLEX_UNIT_DIP, mAnswerFontsize);
        mStringAnswer.setGravity(Gravity.CENTER);

        String s = prompt.getAnswerText();
        if (s != null) {
            mGetBarcodeButton.setText(getContext().getString(
                    R.string.replace_barcode));
            mStringAnswer.setText(s);
        }
        // finish complex layout
        LinearLayout answerLayout = new LinearLayout(getContext());
        answerLayout.setOrientation(LinearLayout.VERTICAL);
        answerLayout.addView(mGetBarcodeButton);
        answerLayout.addView(mStringAnswer);
        addAnswerView(answerLayout);
    }

    @Override
    public void clearAnswer() {
        mStringAnswer.setText(null);
        mGetBarcodeButton.setText(getContext().getString(R.string.get_barcode));
    }

    @Override
    public IAnswerData getAnswer() {
        String s = mStringAnswer.getText().toString();
        if (s == null || s.equals("")) {
            return null;
        } else {
            return new StringData(s);
        }
    }

    /**
     * Allows answer to be set externally in {@Link FormEntryActivity}.
     */
    @Override
    public void setBinaryData(Object answer) {
        mStringAnswer.setText((String) answer);
        Collect.getInstance().getFormController().setIndexWaitingForData(null);
    }

    @Override
    public void setFocus(Context context) {
        // Hide the soft keyboard if it's showing.
        InputMethodManager inputManager = (InputMethodManager) context
                .getSystemService(Context.INPUT_METHOD_SERVICE);
        inputManager.hideSoftInputFromWindow(this.getWindowToken(), 0);
    }

    @Override
    public boolean isWaitingForBinaryData() {
        return mPrompt.getIndex().equals(
                Collect.getInstance().getFormController()
                        .getIndexWaitingForData());
    }

    @Override
    public void cancelWaitingForBinaryData() {
        Collect.getInstance().getFormController().setIndexWaitingForData(null);
    }

    @Override
    public void setOnLongClickListener(OnLongClickListener l) {
        mStringAnswer.setOnLongClickListener(l);
        mGetBarcodeButton.setOnLongClickListener(l);
    }

    @Override
    public void cancelLongPress() {
        super.cancelLongPress();
        mGetBarcodeButton.cancelLongPress();
        mStringAnswer.cancelLongPress();
    }

}

@@ -4987,45 +4987,301 @@
     
-mStringAnswer.setText((
+String sResponse = (String) answer;%0A        if (sResponse != null) %7B      // It looks like the answer is not set to null even if no barcode captured, however it seems prudent to check%0A            sResponse = sResponse.replaceAll(%22%5C%5Cp%7BC%7D%22, %22%22);%0A        %7D%0A        m
 String
-) a
+A
 nswer
+.setText(sResponse
 );%0A 

Remove non printable characters from barcode response. Fix #213. (#366)