de.metadocks.lambdaui.snippets.swt.HelloWorld.java Source code

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Here is the source code for de.metadocks.lambdaui.snippets.swt.HelloWorld.java

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/*******************************************************************************
 * Copyright (c) 2016 Erdal Karaca 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:
 *     Erdal Karaca - initial API and implementation
 *******************************************************************************/
package de.metadocks.lambdaui.snippets.swt;

import java.util.Arrays;

import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ComboViewer;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;

import de.metadocks.lambdaui.swt.SwtUI;
import de.metadocks.lambdaui.swt.ViewerUI;

public class HelloWorld {
    private Text text;

    public void createUIConventional(Composite parent) {
        parent.setLayout(GridLayoutFactory.swtDefaults().numColumns(3).create());

        Label label = new Label(parent, SWT.NONE);
        label.setText("Selection");

        ComboViewer viewer = new ComboViewer(parent, SWT.BORDER | SWT.SINGLE | SWT.READ_ONLY);
        customizeComboViewer(viewer);
        viewer.getCombo().setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

        Button button = new Button(parent, SWT.NONE);
        button.setText("Apply");
        button.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                text.setText("Selection:  " + viewer.getCombo().getText());
            }
        });

        text = new Text(parent, SWT.READ_ONLY | SWT.BORDER);
        text.setLayoutData(
                GridDataFactory.swtDefaults().span(3, 1).grab(true, true).align(SWT.FILL, SWT.FILL).create());
    }

    private void customizeComboViewer(ComboViewer viewer) {
        viewer.setContentProvider(ArrayContentProvider.getInstance());
        viewer.setLabelProvider(new LabelProvider() {
            @Override
            public String getText(Object element) {
                return super.getText(element);
            }
        });
        viewer.setInput(Arrays.asList("One", "Two", "Three"));
    }

    private SwtUI<Composite> root;

    public void createUI(Composite parent) {
        root = SwtUI.wrap(parent);
        root.layout(GridLayoutFactory.swtDefaults().numColumns(3).create())//
                .childControl(() -> SwtUI.create(Label::new)//
                        .text("Selection"))//
                .childControl(() -> ViewerUI.createViewer(ComboViewer::new, SWT.BORDER | SWT.SINGLE | SWT.READ_ONLY)//
                        .id("selectionCombo")//
                        .customizeViewer(this::customizeComboViewer)//
                        .layoutData(new GridData(GridData.FILL_HORIZONTAL)))//
                .childControl(() -> SwtUI.create(Button::new)//
                        .text("Apply")//
                        .on(SWT.Selection, this::onButtonClick))//
                .childControl(() -> SwtUI.create(Text::new, SWT.READ_ONLY | SWT.BORDER)//
                        .id("textField")//
                        .layoutData(GridDataFactory.swtDefaults().span(3, 1).grab(true, true)
                                .align(SWT.FILL, SWT.FILL).create()));
    }

    private void onButtonClick(Event evt) {
        Text tf = root.find("textField");
        ComboViewer viewer = root.findViewer("selectionCombo");
        tf.setText("Selection: " + viewer.getCombo().getText());
    }

    public static void main(String[] args) {
        SwtUI.openInShell(shell -> new HelloWorld().createUIConventional(shell.text("Hello world").control()));
    }
}