/*
 * Copyright 2006-2019 DLR, Germany
 * 
 * SPDX-License-Identifier: EPL-1.0
 * 
 * https://rcenvironment.de/
 */

package de.rcenvironment.core.gui.workflow.editor;

import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;

import de.rcenvironment.core.gui.utils.incubator.AlphanumericalTextContraintListener;
import de.rcenvironment.core.utils.common.CrossPlatformFilenameUtils;

/**
 * This page receives the name for the new workflow.
 * 
 * @author Oliver Seebach
 */
final class NewWorkflowPage extends WizardPage {

    private Text workflownameTextfield = null;

    NewWorkflowPage(final NewWorkflowProjectWizard parentWizard, final IStructuredSelection selection) {
        super("Workflow");
        setTitle("Workflow");
        setDescription("Please enter the name of the new workflow");
        setPageComplete(false);
    }

    @Override
    public void createControl(Composite parent) {
        GridLayout grid = new GridLayout(2, false);

        GridData gridDataComp = new GridData();
        gridDataComp.horizontalAlignment = GridData.BEGINNING;
        gridDataComp.verticalAlignment = GridData.BEGINNING;

        GridData gridDataLabel = new GridData();
        gridDataLabel.horizontalAlignment = GridData.BEGINNING;
        gridDataLabel.verticalAlignment = GridData.BEGINNING;

        GridData gridDataText = new GridData();
        gridDataText.horizontalAlignment = GridData.FILL;
        gridDataText.verticalAlignment = GridData.BEGINNING;
        gridDataText.grabExcessHorizontalSpace = true;

        Composite comp = new Composite(parent, SWT.NONE);
        comp.setLayout(grid);
        comp.setLayoutData(gridDataComp);

        Label workflownameLabel = new Label(comp, SWT.LEFT);
        workflownameLabel.setLayoutData(gridDataLabel);
        workflownameLabel.setText("Workflow name: ");

        workflownameTextfield = new Text(comp, SWT.SINGLE | SWT.BORDER);
        workflownameTextfield.setLayoutData(gridDataText);
        workflownameTextfield.setData("name", "WorkflowNameTextfield");
        workflownameTextfield.setFocus();
        workflownameTextfield.addListener(SWT.Verify, new AlphanumericalTextContraintListener(false, true));
        workflownameTextfield.addListener(SWT.Verify, new AlphanumericalTextContraintListener(
            CrossPlatformFilenameUtils.FORBIDDEN_CHARACTERS));
        workflownameTextfield.addModifyListener(new ModifyListener() {

            @Override
            public void modifyText(ModifyEvent e) {
                if (workflownameTextfield.getText().length() > 0) {
                    setPageComplete(true);
                } else {
                    setPageComplete(false);
                }
                NewWorkflowProjectWizard.sharedWorkflowName = getWorkflownameTextfield().getText();
            }
        });
        setControl(comp);
    }

    public Text getWorkflownameTextfield() {
        return workflownameTextfield;
    }
}
