# HG changeset patch # User Sebastian Kruse # Date 1353937243 -3600 # Node ID 175c1eecaf8409f55b03fa659bbc86ed8d8fa8a2 # Parent fef6080e83adc95ff41ef23d76aca934760221c2 added export kml feature (not finished) diff -r fef6080e83ad -r 175c1eecaf84 src/econnect/wp3_3/client/core/ApplicationConstants.java --- a/src/econnect/wp3_3/client/core/ApplicationConstants.java Mon Nov 26 14:39:42 2012 +0100 +++ b/src/econnect/wp3_3/client/core/ApplicationConstants.java Mon Nov 26 14:40:43 2012 +0100 @@ -203,4 +203,8 @@ */ String linkImage(); + /** + * @return image for export button + */ + String exportImage(); } diff -r fef6080e83ad -r 175c1eecaf84 src/econnect/wp3_3/client/core/ApplicationConstants.properties --- a/src/econnect/wp3_3/client/core/ApplicationConstants.properties Mon Nov 26 14:39:42 2012 +0100 +++ b/src/econnect/wp3_3/client/core/ApplicationConstants.properties Mon Nov 26 14:40:43 2012 +0100 @@ -37,4 +37,6 @@ openDisabledImage = images/open_0.png refineImage = images/zoom.png cancelImage = images/cancel.png -linkImage = images/link.png \ No newline at end of file +linkImage = images/link.png +#TODO: richtiges Bild eintragen +exportImage = images/cancel.png diff -r fef6080e83ad -r 175c1eecaf84 src/econnect/wp3_3/client/core/StiConstants.java --- a/src/econnect/wp3_3/client/core/StiConstants.java Mon Nov 26 14:39:42 2012 +0100 +++ b/src/econnect/wp3_3/client/core/StiConstants.java Mon Nov 26 14:40:43 2012 +0100 @@ -100,6 +100,9 @@ @DefaultStringValue("Delete dataset") String deleteDataSet(); + @DefaultStringValue("Export dataset") + String exportDataSet(); + @DefaultStringValue("Copy selected elements in new dataset") String storeSelected(); diff -r fef6080e83ad -r 175c1eecaf84 src/econnect/wp3_3/client/services/ExportWriterInterface.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/econnect/wp3_3/client/services/ExportWriterInterface.java Mon Nov 26 14:40:43 2012 +0100 @@ -0,0 +1,11 @@ +package econnect.wp3_3.client.services; + +import com.google.gwt.user.client.rpc.RemoteService; +import com.google.gwt.user.client.rpc.RemoteServiceRelativePath; + +@RemoteServiceRelativePath("ExportWriterImpl") +public interface ExportWriterInterface extends RemoteService { + + public String writeKMLFile(String kmlFileContent); + +} \ No newline at end of file diff -r fef6080e83ad -r 175c1eecaf84 src/econnect/wp3_3/client/services/ExportWriterInterfaceAsync.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/econnect/wp3_3/client/services/ExportWriterInterfaceAsync.java Mon Nov 26 14:40:43 2012 +0100 @@ -0,0 +1,9 @@ +package econnect.wp3_3.client.services; + +import com.google.gwt.user.client.rpc.AsyncCallback; + +public interface ExportWriterInterfaceAsync { + + void writeKMLFile(String kmlFileContent, AsyncCallback callback); + +} diff -r fef6080e83ad -r 175c1eecaf84 src/econnect/wp3_3/client/widgets/table/DynamicStiTable.java --- a/src/econnect/wp3_3/client/widgets/table/DynamicStiTable.java Mon Nov 26 14:39:42 2012 +0100 +++ b/src/econnect/wp3_3/client/widgets/table/DynamicStiTable.java Mon Nov 26 14:40:43 2012 +0100 @@ -1,7 +1,12 @@ package econnect.wp3_3.client.widgets.table; +import java.util.ArrayList; + +import com.google.gwt.user.client.rpc.AsyncCallback; import com.google.gwt.user.client.ui.Button; +import com.google.gwt.user.client.ui.FormPanel; import com.google.gwt.user.client.ui.Grid; +import com.google.gwt.user.client.ui.Hidden; import com.google.gwt.user.client.ui.Image; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.HTML; @@ -20,9 +25,8 @@ import econnect.wp3_3.client.core.DataSet; import econnect.wp3_3.client.core.StiConstants; import econnect.wp3_3.client.core.StiCore; - -import java.util.ArrayList; -import java.util.Date; +import econnect.wp3_3.client.services.ExportWriterInterface; +import econnect.wp3_3.client.services.ExportWriterInterfaceAsync; /** * Implementation of a dynamic table for one dataset @@ -112,9 +116,14 @@ /** * ArrayList that holds all elements that can be shown */ - private ArrayList actualObjectSet; + private ArrayList actualObjectSet; + + private ExportWriterInterfaceAsync exportWriter; - /** + final FormPanel exportFormPanel = new FormPanel(); + final Hidden hiddenVal = new Hidden(); + + /** * Constructor for initialization of the dynamic table * * @param core object to allow interaction with all javascript components @@ -260,6 +269,23 @@ footer.setWidget(0, 2, previous); footer.setWidget(0, 3, next); footer.addStyleName("center"); + + //This Panel will hold the name of the export-file + //for download from the ExportServlet + final FormPanel exportFormPanel = new FormPanel("_sel"); + final Hidden hiddenVal = new Hidden(); + hiddenVal.setName("ExportedFilename"); + exportFormPanel.add(hiddenVal); + + Image export = new Image(constants.exportImage()); + export.addClickHandler(new ClickHandler() { + public void onClick(ClickEvent event) { + //create KML file + createKMLFile(); + } + }); + export.addStyleName("export"); + export.setTitle(textConstants.exportDataSet()); Image delete = new Image(constants.deleteImage()); delete.addClickHandler(new ClickHandler() { @@ -270,8 +296,11 @@ delete.addStyleName("delete"); delete.setTitle(textConstants.deleteDataSet()); - Grid func = new Grid(1,1); - func.setWidget(0, 0, delete); + Grid func = new Grid(1,3); + //the FormPanel is invisible, see above + func.setWidget(0, 0, exportFormPanel); + func.setWidget(0, 1, export); + func.setWidget(0, 2, delete); func.addStyleName("center"); Grid tableControls = new Grid(1,4); @@ -461,6 +490,65 @@ } /** + * Creates a (preliminary) KML file from the data in the current data set + */ + private void createKMLFile(){ + String kmlContent = ""; + + for( int i=0; i"; + kmlEntry += "
"; + kmlEntry += ""; + kmlEntry += "" + lon + "," + lat + ""; + + if ( (timeStamp != null) && (timeStamp != "undefined") ) { + kmlEntry += "" + timeStamp + ""; + } else { + kmlEntry += "" + timeSpanStart + "" + timeSpanEnd + ""; + } + + + kmlEntry += ""; + + kmlContent += kmlEntry; + } + + kmlContent += ""; + + exportWriter = GWT.create(ExportWriterInterface.class); + + exportWriter.writeKMLFile(kmlContent, + new AsyncCallback() { + public void onFailure(Throwable caught) { + int i = 1; + } + public void onSuccess(String exportFileName) { + hiddenVal.setValue(exportFileName); + + String url = GWT.getModuleBaseURL(); + url = url + "ExportServlet"; + + exportFormPanel.setAction(url); + exportFormPanel.submit(); + } + } + ); + } + + /** * Checks, if the previous or next button has to be hidden */ private void checkHide(){ diff -r fef6080e83ad -r 175c1eecaf84 src/econnect/wp3_3/server/ExportServlet.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/econnect/wp3_3/server/ExportServlet.java Mon Nov 26 14:40:43 2012 +0100 @@ -0,0 +1,65 @@ +package econnect.wp3_3.server; + +import java.io.File; +import java.io.FileInputStream; +import java.io.FileNotFoundException; +import java.io.IOException; +import java.io.OutputStream; + +import javax.servlet.ServletException; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +public class ExportServlet extends HttpServlet { + + private void streamFileTo(HttpServletResponse response, File file) + throws IOException, FileNotFoundException { + response.setBufferSize(32768); + int bufSize = response.getBufferSize(); + + OutputStream os = response.getOutputStream(); + FileInputStream fis = new FileInputStream(file); + byte[] buffer = new byte[bufSize]; + int bytesRead = 0; + while ((bytesRead = fis.read(buffer)) > 0) { + os.write(buffer, 0, bytesRead); + } + os.flush(); + fis.close(); + } + + private void prepareResponseFor(HttpServletResponse response, File file) { + StringBuilder type = new StringBuilder("attachment; filename="); + type.append(file.getName()); + response.setContentLength((int) file.length()); + response.setContentType("application/octet-stream"); + response.setHeader("Content-Disposition", type.toString()); + } + + public void doGet(HttpServletRequest request, HttpServletResponse response) + throws ServletException { + + OutputStream out = null; + File exportedFile = null; + try { + String fileName = request.getParameter("ExportedFilename"); + exportedFile = new File("kmlexport/" + fileName); + + prepareResponseFor(response, exportedFile); + streamFileTo(response, exportedFile); + + } catch (Exception e) { + throw new ServletException("Exception in Export Servlet", e); + } finally { + if (out != null) { + try {out.close();} catch(Exception e){} + } + + if (exportedFile != null) { + exportedFile.delete(); + } + + } + } +} diff -r fef6080e83ad -r 175c1eecaf84 src/econnect/wp3_3/server/ExportWriterImpl.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/econnect/wp3_3/server/ExportWriterImpl.java Mon Nov 26 14:40:43 2012 +0100 @@ -0,0 +1,39 @@ +package econnect.wp3_3.server; + +import java.io.BufferedWriter; +import java.io.File; +import java.io.FileWriter; +import java.io.IOException; + +import com.google.gwt.user.server.rpc.RemoteServiceServlet; + +import econnect.wp3_3.client.services.ExportWriterInterface; + + +public class ExportWriterImpl extends RemoteServiceServlet implements ExportWriterInterface { + + @Override + public String writeKMLFile(String kmlFileContent) { + + String fileName = "test.kml"; + + File exportFolder = new File("kmlexport"); + + if (!exportFolder.exists()) { + exportFolder.mkdir(); + } + + File kmlFile = new File("kmlexport/" + fileName); + + try { + BufferedWriter out = new BufferedWriter(new FileWriter(kmlFile)); + out.write(kmlFileContent); + out.close(); + } catch (IOException e) { + return null; + } + + return(fileName); + } + +}