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/*
* This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
*
* Copyright 2008-2014 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.plugin.tms.client;
import com.google.gwt.core.client.Callback;
import com.google.gwt.http.client.Request;
import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.http.client.RequestCallback;
import com.google.gwt.http.client.RequestException;
import com.google.gwt.http.client.Response;
import com.google.gwt.xml.client.Document;
import com.google.gwt.xml.client.XMLParser;
import org.geomajas.annotation.Api;
import org.geomajas.gwt2.client.map.layer.tile.TileConfiguration;
import org.geomajas.gwt2.plugin.tms.client.configuration.TileMapInfo;
import org.geomajas.gwt2.plugin.tms.client.configuration.TileMapServiceInfo;
import org.geomajas.gwt2.plugin.tms.client.configuration.v1_0_0.TileMapInfo100;
import org.geomajas.gwt2.plugin.tms.client.configuration.v1_0_0.TileMapServiceInfo100;
import org.geomajas.gwt2.plugin.tms.client.layer.TmsLayer;
import org.geomajas.gwt2.plugin.tms.client.layer.TmsLayerConfiguration;
/**
* Starting point for the TMS client plugin.
*
* @author Pieter De Graef
* @since 2.1.0
*/
@Api(allMethods = true)
public final class TmsClient {
private static TmsClient instance;
private TmsClient() {
}
/**
* Get a singleton instance.
*
* @return Return WmsClient!
*/
public static TmsClient getInstance() {
if (instance == null) {
instance = new TmsClient();
}
return instance;
}
// ------------------------------------------------------------------------
// TMS utility methods:
// ------------------------------------------------------------------------
/**
* Create a new TMS layer instance.
*
* @param id The unique layer ID.
* @param tileConfiguration The tile configuration object.
* @param layerConfiguration The layer configuration object.
* @return A new TMS layer.
*/
public TmsLayer createLayer(String id, TileConfiguration tileConfiguration, TmsLayerConfiguration
layerConfiguration) {
return new TmsLayer(id, tileConfiguration, layerConfiguration);
}
/**
* Create a new TMS layer instance.
*
* @param id The unique layer ID.
* @param title The title for this layer. It's the title that is usually used in the GUI as label.
* @param tileConfiguration The tile configuration object.
* @param layerConfiguration The layer configuration object.
* @return A new TMS layer.
*/
public TmsLayer createLayer(String id, String title, TileConfiguration tileConfiguration, TmsLayerConfiguration
layerConfiguration) {
return new TmsLayer(id, title, tileConfiguration, layerConfiguration);
}
/**
* Create a new TMS layer from a tile map info object.
*
* @param tileMapInfo The tile map object that is the result from parsing a TMS service XML.
* @return A new TMS layer.
*/
public TmsLayer createLayer(TileMapInfo tileMapInfo) {
return new TmsLayer(tileMapInfo);
}
/**
* Create a new TMS layer from a tile map info object.
*
* @param id The unique layer ID.
* @param tileMapInfo The tile map object that is the result from parsing a TMS service XML.
* @return A new TMS layer.
*/
public TmsLayer createLayer(String id, TileMapInfo tileMapInfo) {
return new TmsLayer(tileMapInfo);
}
/**
* Fetch the capabilities of a TileMapService and parse it. This is the base URL that contains a list of TileMaps.
*
* @param baseUrl The URL that points to the TileMapService.
* @param callback The callback tat contains the parsed capabilities as a {@link org.geomajas.gwt2.plugin.tms.client
* .configuration.TileMapServiceInfo} object.
*/
public void getTileMapService(final String baseUrl, final Callback callback) {
RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, baseUrl);
builder.setHeader("Cache-Control", "no-cache");
builder.setHeader("Pragma", "no-cache");
try {
builder.sendRequest(null, new RequestCallback() {
public void onError(Request request, Throwable e) {
callback.onFailure(e.getMessage());
}
public void onResponseReceived(Request request, Response response) {
if (200 == response.getStatusCode()) {
Document messageDom = XMLParser.parse(response.getText());
callback.onSuccess(new TileMapServiceInfo100(messageDom.getDocumentElement()));
} else {
callback.onFailure(response.getText());
}
}
});
} catch (RequestException e) {
// Couldn't connect to server
callback.onFailure(e.getMessage());
}
}
/**
* Fetch the capabilities of a single TileMap configuration XML and parse it. A single TileMap can be used to create
* a {@link org.geomajas.gwt2.plugin.tms.client.layer.TmsLayer}.
*
* @param baseUrl The URL that points to the TileMap XML.
* @param callback The callback that contains the parsed capabilities as a
* {@link org.geomajas.gwt2.plugin.tms.client.configuration.TileMapInfo} object.
*/
public void getTileMap(final String baseUrl, final Callback callback) {
RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, baseUrl);
builder.setHeader("Cache-Control", "no-cache");
builder.setHeader("Pragma", "no-cache");
try {
builder.sendRequest(null, new RequestCallback() {
public void onError(Request request, Throwable e) {
callback.onFailure(e.getMessage());
}
public void onResponseReceived(Request request, Response response) {
if (200 == response.getStatusCode()) {
Document messageDom = XMLParser.parse(response.getText());
callback.onSuccess(new TileMapInfo100(messageDom.getDocumentElement()));
} else {
callback.onFailure(response.getText());
}
}
});
} catch (RequestException e) {
// Couldn't connect to server
callback.onFailure(e.getMessage());
}
}
}
