/* -------------------------------------------------------------------------
OpenTripPlanner GWT Client
Copyright (C) 2015 Mecatran - info@mecatran.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 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 General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
------------------------------------------------------------------------- */
package com.mecatran.otp.gwt.client.view;
import java.util.List;
import com.google.gwt.event.dom.client.BlurEvent;
import com.google.gwt.event.dom.client.BlurHandler;
import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.event.dom.client.ChangeHandler;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.FocusEvent;
import com.google.gwt.event.dom.client.FocusHandler;
import com.google.gwt.event.dom.client.KeyPressEvent;
import com.google.gwt.event.dom.client.KeyPressHandler;
import com.google.gwt.event.dom.client.MouseOutEvent;
import com.google.gwt.event.dom.client.MouseOutHandler;
import com.google.gwt.event.dom.client.MouseOverEvent;
import com.google.gwt.event.dom.client.MouseOverHandler;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.ui.Anchor;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;
import com.mecatran.otp.gwt.client.i18n.I18nUtils;
import com.mecatran.otp.gwt.client.model.LocationBean;
import com.mecatran.otp.gwt.client.proxies.GeocoderProxy;
import com.mecatran.otp.gwt.client.proxies.GeocoderProxy.GeocoderListener;
/**
* Implementation of an AddressBox which call the geocoder only on component
* blur and/or input timeout. If multiple results are found ask for the best
* one.
*
*/
public class AddressProposalBox extends Composite implements AddressBox {
private TextBox textBox;
private Button clearButton;
private VerticalPanel proposalPanel;
private DialogBox proposalDialog;
private LocationBean location;
private AddressSuggestBoxListener listener;
private GeocoderProxy geocoderProxy;
private int geocodeRecursiveMutex = 0;
private Timer geocodeTimer;
private boolean modifiedSinceGeocoding = true;
public AddressProposalBox() {
geocodeTimer = new Timer() {
@Override
public void run() {
if (!modifiedSinceGeocoding)
return;
modifiedSinceGeocoding = false;
if (!textBox.getText().isEmpty()
&& location.getLocation() == null) {
geocode();
}
}
};
location = new LocationBean();
VerticalPanel rootPanel = new VerticalPanel();
HorizontalPanel inputPanel = new HorizontalPanel();
rootPanel.add(inputPanel);
inputPanel.setCellWidth(inputPanel, "100%");
textBox = new TextBox();
textBox.addChangeHandler(new ChangeHandler() {
@Override
public void onChange(ChangeEvent event) {
location.setAddress(textBox.getText());
location.setLocation(null);
if (textBox.getText().isEmpty())
listener.onLocationSelected(location);
}
});
textBox.addKeyPressHandler(new KeyPressHandler() {
@Override
public void onKeyPress(KeyPressEvent event) {
modifiedSinceGeocoding = true;
location.setLocation(null);
geocodeTimer.cancel();
if (textBox.getText().length() > 10) {
geocodeTimer.schedule(3000);
}
}
});
textBox.addFocusHandler(new FocusHandler() {
@Override
public void onFocus(FocusEvent event) {
listener.onFocus();
}
});
textBox.addBlurHandler(new BlurHandler() {
@Override
public void onBlur(BlurEvent event) {
geocodeTimer.cancel();
geocodeTimer.schedule(100);
}
});
inputPanel.add(textBox);
clearButton = new Button("X");
inputPanel.setCellWidth(inputPanel, "auto");
clearButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
geocodeTimer.cancel();
textBox.setText("");
location.setAddress("");
location.setLocation(null);
listener.onLocationSelected(location);
}
});
inputPanel.add(clearButton);
proposalPanel = new VerticalPanel();
initWidget(rootPanel);
}
@Override
public void setAddressSuggestBoxListener(AddressSuggestBoxListener listener) {
this.listener = listener;
}
@Override
public LocationBean getLocation() {
location.setAddress(textBox.getText());
return location;
}
@Override
public void setLocation(LocationBean location) {
this.location = location;
if (location.getAddress() != null && !location.getAddress().isEmpty()) {
textBox.setText(location.getAddress());
if (location.getLocation() == null && geocodeRecursiveMutex == 0) {
geocode();
}
}
}
@Override
public void setGeocoderProxy(GeocoderProxy geocoderProxy) {
this.geocoderProxy = geocoderProxy;
}
@Override
public Widget getAsWidget() {
return this;
}
private void geocode() {
if (geocoderProxy == null)
return;
geocoderProxy.geocode(textBox.getText(), new GeocoderListener() {
@Override
public void onGeocodingDone(List<LocationBean> locations) {
proposalPanel.clear();
if (locations == null || locations.size() == 0) {
// No answer
// TODO Set special style name and message
// Prevent from recursively geocoding for a null location
geocodeRecursiveMutex++;
location.setLocation(null);
listener.onLocationSelected(location);
geocodeRecursiveMutex--;
Label noAddressFound = new Label(I18nUtils
.tr("address.not.found"));
noAddressFound.addStyleName("warn-icon");
noAddressFound.addStyleName("no-address-found");
proposalPanel.add(noAddressFound);
showProposals();
} else if (locations.size() == 1) {
// One answer: take this
location = locations.get(0);
textBox.setText(location.getAddress());
listener.onLocationSelected(location);
} else {
// Several answers: make a proposal
// And wait for the user to select one.
int n = 0;
Label severalAddressFound = new Label(I18nUtils
.tr("several.address.matches"));
severalAddressFound.addStyleName("several-address-found");
proposalPanel.add(severalAddressFound);
for (LocationBean location : locations) {
if (n >= 10) // TODO Make this parametrable
break;
GeocoderAddressProposal gap = new GeocoderAddressProposal(
location);
gap.setStyleName("geocoder-address-proposal");
proposalPanel.add(gap);
n++;
}
showProposals();
}
}
});
}
private void showProposals() {
proposalDialog = new DialogBox();
proposalDialog.setAnimationEnabled(true);
VerticalPanel rootPanel = new VerticalPanel();
proposalDialog.add(rootPanel);
rootPanel.add(proposalPanel);
HorizontalPanel buttonPanel = new HorizontalPanel();
rootPanel.add(buttonPanel);
Button cancelButton = new Button(I18nUtils.tr("cancel"));
buttonPanel.add(cancelButton);
cancelButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
hideProposals();
}
});
proposalDialog.setAutoHideEnabled(true);
proposalDialog.showRelativeTo(getAsWidget());
}
private void hideProposals() {
if (proposalDialog != null) {
proposalDialog.hide();
proposalDialog = null;
}
proposalPanel.clear();
}
private void proposalSelected(LocationBean location) {
this.location = location;
textBox.setText(location.getAddress());
listener.onLocationSelected(this.location);
hideProposals();
}
private class GeocoderAddressProposal extends Composite {
private LocationBean location;
public GeocoderAddressProposal(LocationBean aLocation) {
this.location = aLocation;
SimplePanel rootPanel = new SimplePanel();
Anchor link = new Anchor(location.getAddress());
link.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
listener.onLocationHover(null);
proposalSelected(GeocoderAddressProposal.this.location);
}
});
link.addMouseOverHandler(new MouseOverHandler() {
@Override
public void onMouseOver(MouseOverEvent event) {
listener.onLocationHover(location);
}
});
link.addMouseOutHandler(new MouseOutHandler() {
@Override
public void onMouseOut(MouseOutEvent event) {
listener.onLocationHover(null);
}
});
rootPanel.add(link);
initWidget(rootPanel);
}
}
}