org.openxdata.sharedlib.client.view.SaveFileDialog.java Source code

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Here is the source code for org.openxdata.sharedlib.client.view.SaveFileDialog.java

Source

package org.openxdata.sharedlib.client.view;

import org.openxdata.sharedlib.client.OpenXdataConstants;
import org.openxdata.sharedlib.client.locale.FormsConstants;
import org.openxdata.sharedlib.client.util.FormUtil;

import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.core.client.Scheduler.ScheduledCommand;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.FormPanel;
import com.google.gwt.user.client.ui.FormPanel.SubmitCompleteHandler;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.TextArea;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;

/**
 * 
 *  www.openxdata.org - Licensed as written in license.txt and original sources of this file and its authors are found in sources.txt.
 *
 */
public class SaveFileDialog extends DialogBox {

    private FormsConstants constants = GWT.create(FormsConstants.class);

    private FormPanel form = new FormPanel();
    private String actionUrl;
    private TextBox txtName;
    private TextArea txtArea;

    public SaveFileDialog(String url, String data, String fileName) {
        initWidgets(url, data, fileName);
    }

    public void initWidgets(String url, String data, String fileName) {
        actionUrl = url;
        form.setAction(actionUrl);
        form.setEncoding(FormPanel.ENCODING_MULTIPART);
        form.setMethod(FormPanel.METHOD_POST);

        VerticalPanel verticalPanel = new VerticalPanel();
        verticalPanel.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);
        verticalPanel.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);
        verticalPanel.setSpacing(10);
        form.add(verticalPanel);

        txtArea = new TextArea();
        txtArea.setText(data);
        txtArea.setName("filecontents");
        txtArea.setVisible(false);

        txtName = new TextBox();
        txtName.setText(fileName);
        txtName.setName("filename");
        txtName.setWidth("250" + OpenXdataConstants.UNITS);

        verticalPanel.add(txtName);
        verticalPanel.add(txtArea);

        HorizontalPanel horizontalPanel = new HorizontalPanel();
        horizontalPanel.setWidth("100%");
        horizontalPanel.setHeight("100%");
        horizontalPanel.setVerticalAlignment(HasVerticalAlignment.ALIGN_BOTTOM);

        Button button = new Button(constants.save(), new ClickHandler() {
            public void onClick(ClickEvent event) {
                String fileName = txtName.getText();
                if (fileName != null && fileName.trim().length() > 0) {
                    String action = actionUrl;
                    if (action.contains("?"))
                        action += "&";
                    else
                        action += "?";
                    action += "filename=" + fileName;

                    form.setAction(action);
                    ((VerticalPanel) txtName.getParent()).add(txtArea);
                    form.submit();
                    //hide();

                    FormUtil.dlg.setText(constants.processingMsg());
                    FormUtil.dlg.center();
                }
            }
        });

        horizontalPanel.add(button);
        horizontalPanel.setCellHorizontalAlignment(button, HasHorizontalAlignment.ALIGN_LEFT);

        button = new Button(constants.cancel(), new ClickHandler() {
            public void onClick(ClickEvent event) {
                hide();
                FormUtil.dlg.hide();
            }
        });

        horizontalPanel.add(button);
        horizontalPanel.setCellHorizontalAlignment(button, HasHorizontalAlignment.ALIGN_RIGHT);

        verticalPanel.add(horizontalPanel);

        setWidget(form);

        form.addSubmitCompleteHandler(new SubmitCompleteHandler() {
            public void onSubmitComplete(FormPanel.SubmitCompleteEvent event) {
                hide();
                FormUtil.dlg.hide();
                Window.Location.replace(form.getAction());
            }
        });

        setText(constants.saveFileAs());
    }

    /**
     * Displays the dialog box at the center of the browser window.
     */
    public void center() {

        //Let the base GWT implementation of centering take control.
        super.center();

        //Some how focus will not get to the name unless when called within
        //a deffered command.
        Scheduler.get().scheduleDeferred(new ScheduledCommand() {
            public void execute() {
                txtName.setFocus(true);
            }
        });
    }
}