/*
* This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
*
* Copyright 2008-2015 Geosparc nv, http://www.geosparc.com/, Belgium.
*
* The program is available in open source according to the GNU Affero
* General Public License. All contributions in this program are covered
* by the Geomajas Contributors License Agreement. For full licensing
* details, see LICENSE.txt in the project root.
*/
package org.geomajas.gwt2.example.client.sample.layer;
import org.geomajas.gwt2.client.GeomajasImpl;
import org.geomajas.gwt2.client.GeomajasServerExtension;
import org.geomajas.gwt2.client.event.LayerRefreshedEvent;
import org.geomajas.gwt2.client.event.LayerRefreshedHandler;
import org.geomajas.gwt2.client.event.MapInitializationEvent;
import org.geomajas.gwt2.client.event.MapInitializationHandler;
import org.geomajas.gwt2.client.map.MapPresenter;
import org.geomajas.gwt2.client.map.layer.LabelsSupported;
import org.geomajas.gwt2.client.map.layer.Layer;
import org.geomajas.gwt2.example.base.client.ExampleBase;
import org.geomajas.gwt2.example.base.client.sample.SamplePanel;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.DecoratorPanel;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.ResizeLayoutPanel;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;
/**
* ContentPanel that demonstrates layer refreshing.
*
* @author Pieter De Graef
*/
public class LayerRefreshPanel implements SamplePanel {
/**
* UI binder for this widget.
*
* @author Pieter De Graef
*/
interface MyUiBinder extends UiBinder<Widget, LayerRefreshPanel> {
}
private static final MyUiBinder UI_BINDER = GWT.create(MyUiBinder.class);
private MapPresenter mapPresenter;
@UiField
protected VerticalPanel layerBtnLayout;
@UiField
protected VerticalPanel layerEventLayout;
@UiField
protected ResizeLayoutPanel mapPanel;
public Widget asWidget() {
Widget layout = UI_BINDER.createAndBindUi(this);
// Create the MapPresenter and add an InitializationHandler:
mapPresenter = GeomajasImpl.getInstance().createMapPresenter();
mapPresenter.setSize(480, 480);
mapPresenter.getEventBus().addMapInitializationHandler(new MyMapInitializationHandler());
mapPresenter.getEventBus().addLayerRefreshedHandler(new MyLayerRefreshedHandler());
// Define the whole layout:
DecoratorPanel mapDecorator = new DecoratorPanel();
mapDecorator.add(mapPresenter.asWidget());
mapPanel.add(mapDecorator);
// Initialize the map, and return the layout:
GeomajasServerExtension.getInstance().initializeMap(mapPresenter, "gwt-app", "mapCountries");
return layout;
}
/**
* Map initialization handler that adds a CheckBox to the layout for every layer. With these CheckBoxes, the user
* can toggle the layer's visibility.
*
* @author Pieter De Graef
*/
private class MyMapInitializationHandler implements MapInitializationHandler {
public void onMapInitialized(MapInitializationEvent event) {
// When the map initializes, add a refresh button for every layer:
for (int i = 0; i < mapPresenter.getLayersModel().getLayerCount(); i++) {
final Layer layer = mapPresenter.getLayersModel().getLayer(i);
// mapPresenter.getLayersModelRenderer().setLayerAnimation(layer, true);
layerBtnLayout.add(new LayerWidget(layer));
}
// Now zoom in a lot, because the countries layer is not visible at high altitudes:
mapPresenter.getViewPort().applyBounds(ExampleBase.BBOX_ITALY);
}
}
/**
* Handler that catches layer refreshed events and prints them out.
*
* @author Pieter De Graef
*/
private class MyLayerRefreshedHandler implements LayerRefreshedHandler {
public void onLayerRefreshed(LayerRefreshedEvent event) {
layerEventLayout.add(new Label("Layer refreshed: " + event.getLayer().getTitle()));
}
}
/**
* Layer representation on the GUI.
*
* @author Pieter De Graef
*/
private final class LayerWidget extends HorizontalPanel {
private LayerWidget(final Layer layer) {
setWidth("100%");
Button removeBtn = new Button("Refresh");
removeBtn.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
layer.refresh();
}
});
add(removeBtn);
if (layer instanceof LabelsSupported) {
final LabelsSupported labelsSupported = (LabelsSupported) layer;
CheckBox labeledCheckBox = new CheckBox("Labeled");
labeledCheckBox.addValueChangeHandler(new ValueChangeHandler<Boolean>() {
@Override
public void onValueChange(ValueChangeEvent<Boolean> event) {
labelsSupported.setLabeled(!labelsSupported.isLabeled());
layer.refresh();
}
});
add(labeledCheckBox);
}
add(new Label(layer.getTitle()));
setStyleName(ExampleBase.getShowcaseResource().css().sampleRow());
}
}
}