/*
* 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 org.javarosa.core.model.data.DecimalData;
import org.javarosa.core.model.data.IAnswerData;
import org.javarosa.form.api.FormEntryPrompt;
import android.content.Context;
import android.text.InputFilter;
import android.text.InputType;
import android.text.method.DigitsKeyListener;
import android.util.TypedValue;
import java.text.NumberFormat;
/**
* A widget that restricts values to floating point numbers.
*
* @author Carl Hartung (carlhartung@gmail.com)
*/
public class DecimalWidget extends StringWidget {
public DecimalWidget(Context context, FormEntryPrompt prompt) {
super(context, prompt);
// formatting
mAnswer.setTextSize(TypedValue.COMPLEX_UNIT_DIP, mAnswerFontsize);
mAnswer.setInputType(InputType.TYPE_NUMBER_FLAG_DECIMAL);
// needed to make long readonly text scroll
mAnswer.setHorizontallyScrolling(false);
mAnswer.setSingleLine(false);
// only numbers are allowed
mAnswer.setKeyListener(new DigitsKeyListener(true, true));
// only 15 characters allowed
InputFilter[] fa = new InputFilter[1];
fa[0] = new InputFilter.LengthFilter(15);
mAnswer.setFilters(fa);
Double d = null;
if (prompt.getAnswerValue() != null) {
d = (Double) prompt.getAnswerValue().getValue();
}
NumberFormat nf = NumberFormat.getNumberInstance();
nf.setMaximumFractionDigits(15);
nf.setMaximumIntegerDigits(15);
nf.setGroupingUsed(false);
if (d != null) {
Double dAnswer = (Double) prompt.getAnswerValue().getValue();
String dString = nf.format(dAnswer);
d = Double.parseDouble(dString.replace(',', '.'));
mAnswer.setText(d.toString());
}
// disable if read only
if (prompt.isReadOnly()) {
setBackgroundDrawable(null);
setFocusable(false);
setClickable(false);
}
}
@Override
public IAnswerData getAnswer() {
String s = mAnswer.getText().toString();
if (s == null || s.equals("")) {
return null;
} else {
try {
return new DecimalData(Double.valueOf(s).doubleValue());
} catch (Exception NumberFormatException) {
return null;
}
}
}
}