163 lines
4.7 KiB
Java
163 lines
4.7 KiB
Java
package org.gcube.portlets.widgets.ckandatapublisherwidget.client.ui;
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import org.gcube.portlets.widgets.ckandatapublisherwidget.client.CKanPublisherService;
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import org.gcube.portlets.widgets.ckandatapublisherwidget.client.CKanPublisherServiceAsync;
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import org.gcube.portlets.widgets.ckandatapublisherwidget.client.Encoder;
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import org.gcube.portlets.widgets.ckandatapublisherwidget.client.events.AddResourceEvent;
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import org.gcube.portlets.widgets.ckandatapublisherwidget.shared.ResourceBean;
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import com.github.gwtbootstrap.client.ui.AlertBlock;
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import com.github.gwtbootstrap.client.ui.Button;
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import com.github.gwtbootstrap.client.ui.TextArea;
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import com.github.gwtbootstrap.client.ui.TextBox;
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import com.github.gwtbootstrap.client.ui.constants.AlertType;
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import com.google.gwt.core.client.GWT;
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import com.google.gwt.event.dom.client.ClickEvent;
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import com.google.gwt.event.dom.client.ClickHandler;
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import com.google.gwt.event.shared.HandlerManager;
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import com.google.gwt.uibinder.client.UiBinder;
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import com.google.gwt.uibinder.client.UiField;
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import com.google.gwt.uibinder.client.UiHandler;
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import com.google.gwt.user.client.Timer;
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import com.google.gwt.user.client.Window;
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import com.google.gwt.user.client.rpc.AsyncCallback;
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import com.google.gwt.user.client.ui.Composite;
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import com.google.gwt.user.client.ui.Widget;
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/**
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* Form used to add resource(s) to a dataset
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* @author Costantino Perciante at ISTI-CNR (costantino.perciante@isti.cnr.it)
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*/
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public class AddResourceToDataset extends Composite{
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private static AddResourceToDatasetUiBinder uiBinder = GWT
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.create(AddResourceToDatasetUiBinder.class);
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interface AddResourceToDatasetUiBinder extends
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UiBinder<Widget, AddResourceToDataset> {
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}
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// bus to alert the dataset form about this new resource
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private HandlerManager eventBus;
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// the dataset id
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private String datasetId;
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// the owner
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private String owner;
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//Create a remote service proxy to talk to the server-side ckan service.
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private final CKanPublisherServiceAsync ckanServices = GWT.create(CKanPublisherService.class);
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@UiField TextBox resourceUrlTextBox;
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@UiField TextBox resourceNameTextBox;
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@UiField TextArea resourceDescriptionTextArea;
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@UiField Button addResourceButton;
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@UiField AlertBlock infoBlock;
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@UiField Button goToDatasetButton;
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public AddResourceToDataset(HandlerManager eventBus, String datasetId, String owner, final String datasetUrl) {
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initWidget(uiBinder.createAndBindUi(this));
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// save bus
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this.eventBus = eventBus;
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// save dataset id (it is needed when we will add resources)
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this.datasetId = datasetId;
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// the owner of the dataset/files
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this.owner = owner;
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goToDatasetButton.addClickHandler(new ClickHandler() {
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@Override
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public void onClick(ClickEvent event) {
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String currentPath = Window.Location.getHref();
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int datasetIndex = datasetUrl.indexOf("/dataset");
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if(datasetIndex == -1)
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return;
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String finalPart = datasetUrl.substring(datasetIndex);
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String finalPath = currentPath + "?" + Encoder.encode("q") + "=" + Encoder.encode(finalPart);
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Window.Location.assign(finalPath);
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}
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});
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}
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@UiHandler("addResourceButton")
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void onAddButtonClick(ClickEvent e){
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infoBlock.setVisible(false);
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// validation
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if(resourceUrlTextBox.getText().isEmpty() || resourceNameTextBox.getText().isEmpty()){
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showAlert("Url and name fields cannot be empty", AlertType.ERROR);
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return;
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}
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// collect data and build up the bean
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final ResourceBean resource = new ResourceBean(resourceUrlTextBox.getText(), resourceNameTextBox.getText(), resourceDescriptionTextArea.getText());
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// disable add button
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addResourceButton.setEnabled(false);
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// try to create
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ckanServices.addResourceToDataset(resource, datasetId, owner, new AsyncCallback<ResourceBean>() {
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@Override
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public void onSuccess(ResourceBean result) {
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if(result != null){
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showAlert("Resource created correctly", AlertType.SUCCESS);
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eventBus.fireEvent(new AddResourceEvent(result));
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// remove data
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resourceUrlTextBox.setText("");
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resourceNameTextBox.setText("");
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resourceDescriptionTextArea.setText("");
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}
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else
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showAlert("Unable to add this resource. Check that the url is correct", AlertType.ERROR);
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}
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@Override
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public void onFailure(Throwable caught) {
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showAlert("Unable to add this resource, sorry", AlertType.ERROR);
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}
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});
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}
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/**
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* Show error/success after resource creation attempt.
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* @param text
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* @param type
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*/
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protected void showAlert(String text, AlertType type) {
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infoBlock.setText(text);
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infoBlock.setType(type);
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infoBlock.setVisible(true);
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addResourceButton.setEnabled(true);
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// hide after some seconds
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Timer t = new Timer() {
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@Override
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public void run() {
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infoBlock.setVisible(false);
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}
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};
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t.schedule(4000);
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}
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}
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