URLImportDialog.java

package org.iplantc.de.client.views.dialogs;

import java.util.List;

import org.iplantc.de.client.ErrorHandler;
import org.iplantc.de.client.I18N;
import org.iplantc.de.client.events.UploadCompleteHandler;
import org.iplantc.de.client.models.UserInfo;
import org.iplantc.de.client.services.FolderServices;
import org.iplantc.de.client.utils.JsonUtil;
import org.iplantc.de.client.utils.NotifyInfo;

import com.extjs.gxt.ui.client.Style.HorizontalAlignment;
import com.extjs.gxt.ui.client.event.ButtonEvent;
import com.extjs.gxt.ui.client.event.SelectionListener;
import com.extjs.gxt.ui.client.util.Params;
import com.extjs.gxt.ui.client.widget.Dialog;
import com.extjs.gxt.ui.client.widget.Info;
import com.extjs.gxt.ui.client.widget.MessageBox;
import com.extjs.gxt.ui.client.widget.Status;
import com.extjs.gxt.ui.client.widget.button.Button;
import com.extjs.gxt.ui.client.widget.form.Field;
import com.extjs.gxt.ui.client.widget.form.FormPanel;
import com.extjs.gxt.ui.client.widget.form.TextArea;
import com.extjs.gxt.ui.client.widget.form.TextField;
import com.extjs.gxt.ui.client.widget.layout.FitLayout;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.HTML;

public class URLImportDialog extends Dialog
{

	private FormPanel form;
	private UploadCompleteHandler handler;
	private Status importStatus;
	private String parentFolderId;

	public URLImportDialog(String parentFolderId, UploadCompleteHandler handler)
	{
		super();
		initDialog();
		form = new FormPanel();
		form.setHideLabels(true);
		form.setHeaderVisible(false);
		form.setAutoHeight(true);
		form.setFieldWidth(340);
		this.handler = handler;
		this.parentFolderId = parentFolderId;

		addUrlField();
		addDescField();
		addButtons();
		setHeading(I18N.DISPLAY.urlImport());
		add(form);
	}

	private void initDialog()
	{
		setButtonAlign(HorizontalAlignment.RIGHT);
		setLayout(new FitLayout());
		setResizable(false);
		setModal(true);
		setHideOnButtonClick(false);
	}

	private void addButtons()
	{
		importStatus = new Status();
		getHeader().addTool(importStatus);

		setButtons(Dialog.OKCANCEL);
		final Button submitBtn = getOkButton();
		submitBtn.setText(I18N.DISPLAY.importLabel());
		Button cancelBtn = getButtonById(Dialog.CANCEL);
		cancelBtn.addSelectionListener(new SelectionListener<ButtonEvent>()
		{

			@Override
			public void componentSelected(ButtonEvent ce)
			{
				hide();

			}
		});
		submitBtn.addSelectionListener(new SelectionListener<ButtonEvent>()
		{

			@Override
			public void componentSelected(ButtonEvent ce)
			{
				submitForm();

			}
		});

	}

	/**
	 * Retrieve the OK button for the dialog.
	 * 
	 * If a more generic retrieval is needed, use the inherited getButtonById() method.
	 * 
	 * @return a reference to the OK button for the dialog.
	 */
	public Button getOkButton()
	{
		return getButtonById(Dialog.OK);
	}

	private void addDescField()
	{
		form.add(new HTML(I18N.DISPLAY.descriptionPrompt()));
		TextArea description = new TextArea();
		description.setMaxLength(255);
		description.setName(I18N.DISPLAY.description());
		description.setId(I18N.DISPLAY.description());
		form.add(description);

	}

	private void addUrlField()
	{
		form.add(new HTML(I18N.DISPLAY.urlPrompt()));
		final TextField<String> url = new TextField<String>();
		url.setAllowBlank(false);
		url.setName(I18N.DISPLAY.url());
		url.setId(I18N.DISPLAY.url());
		form.add(url);

	}
	
	private void setButtonEnable(boolean state) 
	{
		getOkButton().setEnabled(state);
	}

	/**
	 * submit url and the description to the service
	 */
	private void submitForm()
	{
		if(form.isValid()) 
		{
		importStatus.setBusy(I18N.DISPLAY.fileImportStatus());
		UserInfo info = UserInfo.getInstance();
		List<Field<?>> fields = form.getFields();

		String url = null;
		String description = null;

		for(Field<?> f : fields)
		{
			if(f.getId().equals(I18N.DISPLAY.url()))
			{
				url = (String)f.getValue();
			}
			else if(f.getId().equals(I18N.DISPLAY.description()))
			{
				description = (String)f.getValue();
			}
		}
		setButtonEnable(false);
		FolderServices.importFile(info.getWorkspaceId(), parentFolderId, url, JsonUtil.escapeNewLine(((description != null) ? description : "")),
				new AsyncCallback<String>()
				{

					@Override
					public void onSuccess(String response)
					{
						handler.onCompletion(response);
						importStatus.clearStatus(null);
					}

					@Override
					public void onFailure(Throwable arg0)
					{
		    			handler.onCompletion(arg0.toString());
						importStatus.clearStatus(null);
					}
				});
		NotifyInfo.display(I18N.DISPLAY.information(),I18N.DISPLAY.importRequestSubmit(),new Params(url));
		hide();
	}
	}

}