de.walware.statet.r.internal.ui.wizards.RPkgProjectWizardPage.java Source code

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Here is the source code for de.walware.statet.r.internal.ui.wizards.RPkgProjectWizardPage.java

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/*=============================================================================#
 # Copyright (c) 2011-2015 Stephan Wahlbrink (WalWare.de) and others.
 # All rights reserved. This program and the accompanying materials
 # are made available under the terms of the Eclipse Public License v1.0
 # which accompanies this distribution, and is available at
 # http://www.eclipse.org/legal/epl-v10.html
 # 
 # Contributors:
 #     Stephan Wahlbrink - initial API and implementation
 #=============================================================================*/

package de.walware.statet.r.internal.ui.wizards;

import org.eclipse.core.databinding.Binding;
import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.UpdateValueStrategy;
import org.eclipse.core.databinding.observable.Realm;
import org.eclipse.core.databinding.observable.value.WritableValue;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.databinding.wizard.WizardPageSupport;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;

import de.walware.ecommons.databinding.DirtyTracker;
import de.walware.ecommons.ui.util.LayoutUtil;

import de.walware.statet.r.core.rlang.RPkgNameValidator;

public class RPkgProjectWizardPage extends WizardPage {

    private final NewRProjectWizardPage fProjectPage;

    private Text fPkgNameControl;

    private DataBindingContext fDbc;
    private WritableValue fPkgNameValue;

    private boolean fWasVisible;
    private DirtyTracker fPkgUserChanged;

    public RPkgProjectWizardPage(final NewRProjectWizardPage projectPage) {
        super("RPkgWizardPage"); //$NON-NLS-1$

        setTitle(Messages.RPkgWizardPage_title);
        setDescription(Messages.RPkgWizardPage_description);

        fProjectPage = projectPage;
    }

    @Override
    public void createControl(final Composite parent) {
        initializeDialogUnits(parent);

        final Composite composite = new Composite(parent, SWT.NONE);
        composite.setLayout(LayoutUtil.createContentGrid(1));

        {
            final Composite group = createRPkgGroup(composite);
            group.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
        }

        Dialog.applyDialogFont(composite);
        setControl(composite);

        final Realm realm = Realm.getDefault();
        fDbc = new DataBindingContext(realm);
        addBindings(fDbc, realm);
        WizardPageSupport.create(this, fDbc);
    }

    protected Composite createRPkgGroup(final Composite parent) {
        final Group composite = new Group(parent, SWT.NONE);
        composite.setLayout(LayoutUtil.createGroupGrid(2));
        composite.setText("R Package");

        final Label label = new Label(composite, SWT.NONE);
        label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false));
        label.setText("Package Name: ");

        fPkgNameControl = new Text(composite, SWT.LEFT | SWT.BORDER);
        fPkgNameControl.setFont(JFaceResources.getTextFont());
        fPkgNameControl.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));

        return composite;
    }

    protected void addBindings(final DataBindingContext dbc, final Realm realm) {
        fPkgNameValue = new WritableValue(realm, "", String.class);

        fPkgUserChanged = new DirtyTracker();

        final Binding binding = dbc.bindValue(SWTObservables.observeText(fPkgNameControl, SWT.Modify),
                fPkgNameValue, new UpdateValueStrategy().setAfterGetValidator(new RPkgNameValidator()), null);
        fPkgUserChanged.add(binding);
    }

    @Override
    public void setVisible(final boolean visible) {
        super.setVisible(visible);
        if (visible) {
            final boolean firstTime = !fWasVisible;
            fWasVisible = true;

            if (!fPkgUserChanged.isDirty() && fProjectPage != null) {
                fPkgNameControl.setText(fProjectPage.getProjectName());
                fPkgUserChanged.resetDirty();
            }
            if (firstTime) {
                setMessage(null);
                setErrorMessage(null);
            }
        }
    }

    public String getPkgName() {
        return (String) fPkgNameValue.getValue();
    }

}