/*
* Copyright (C) 2011 4th Line GmbH, Switzerland
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.fourthline.konto.client.ledger.entry.view;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.KeyUpEvent;
import com.google.gwt.resources.client.CssResource;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HTMLPanel;
import com.google.gwt.user.client.ui.Label;
import org.fourthline.konto.client.bundle.Bundle;
import org.fourthline.konto.client.ledger.Constants;
import org.fourthline.konto.shared.MonetaryAmount;
import org.fourthline.konto.shared.entity.CurrencyPair;
import org.fourthline.konto.shared.entity.MonetaryUnit;
import org.seamless.gwt.component.client.binding.BigDecimalViewProperty;
import org.seamless.gwt.component.client.binding.ValidatableViewProperty;
import org.seamless.gwt.component.client.widget.BigDecimalGhostedTextBox;
import org.seamless.gwt.theme.shared.client.ThemeStyle;
import org.seamless.gwt.validation.shared.ValidationError;
import javax.inject.Inject;
import java.math.BigDecimal;
/**
* @author Christian Bauer
*/
public class ExchangeViewImpl extends Composite implements ExchangeView {
interface UI extends UiBinder<HTMLPanel, ExchangeViewImpl> {
}
private UI ui = GWT.create(UI.class);
interface Style extends CssResource {
}
@UiField(provided = true)
Bundle bundle;
@UiField
Style style;
@UiField
Label currencyPairLabel;
@UiField(provided = true)
BigDecimalGhostedTextBox rateTextBox;
@UiField(provided = true)
BigDecimalGhostedTextBox amountTextBox;
final ValidatableViewProperty<BigDecimal> rateProperty;
final ValidatableViewProperty<MonetaryAmount> amountProperty;
Presenter presenter;
MonetaryUnit monetaryUnit;
@Inject
public ExchangeViewImpl(Bundle bundle) {
this.bundle = bundle;
rateTextBox =
new BigDecimalGhostedTextBox(getExchangeRateLabel(), ThemeStyle.GhostedTextBox()) {
@Override
public void onKeyUp(KeyUpEvent event) {
super.onKeyUp(event);
presenter.rateUpdated();
}
};
rateProperty = new BigDecimalViewProperty(rateTextBox, ThemeStyle.FormErrorField());
amountTextBox =
new BigDecimalGhostedTextBox(getExchangedAmountLabel(), ThemeStyle.GhostedTextBox()) {
@Override
public void onKeyUp(KeyUpEvent event) {
super.onKeyUp(event);
presenter.exchangedAmountUpdated();
}
};
amountProperty = new ValidatableViewProperty<MonetaryAmount>() {
@Override
public void reset() {
set(null);
}
@Override
public void set(MonetaryAmount value) {
clearValidationError();
amountTextBox.setValue(value == null ? "0" : value.getString(), true);
}
@Override
public MonetaryAmount get() {
if (amountTextBox.getValue().length() == 0) return null;
try {
BigDecimal value = new BigDecimal(amountTextBox.getValue());
return new MonetaryAmount(monetaryUnit, value);
} catch (Exception ex) {
// Well...
}
return null;
}
@Override
public void showValidationError(ValidationError error) {
amountTextBox.addStyleName(ThemeStyle.FormErrorField());
}
@Override
public void clearValidationError() {
amountTextBox.removeStyleName(ThemeStyle.FormErrorField());
}
};
initWidget(ui.createAndBindUi(this));
}
@Override
public void setPresenter(Presenter presenter) {
this.presenter = presenter;
}
@Override
public void reset(CurrencyPair pair, MonetaryAmount amount) {
currencyPairLabel.setText(pair.getFromCode() + "/" + pair.getToCode());
monetaryUnit = pair.getToUnit();
rateProperty.set(pair.getExchangeRate());
amountProperty.set(amount);
}
@Override
public ValidatableViewProperty<BigDecimal> getRateProperty() {
return rateProperty;
}
@Override
public ValidatableViewProperty<MonetaryAmount> getAmountProperty() {
return amountProperty;
}
protected String getExchangeRateLabel() {
return Constants.LABEL_EXCHANGE_RATE;
}
protected String getExchangedAmountLabel() {
return Constants.LABEL_EXCHANGED_AMOUNT;
}
}