Java SWT Text Tutorial with Examples

SWT Text
SWT Text Example
SWT Text and Styles
Useful methods

1. SWT Text

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The TextField class implements a UI control that accepts and displays text input. It provides capabilities to receive text input from a user.

Text class is used to create a text input which allows users to enter on a single line. It can also create a text input to enter on multiple lines or to create a password field.

See more Password Field:
SWT Password Field

// Style ....
int style = SWT.BORDER;
int style = SWT.BORDER | SWT.PASSWORD;

Text text = new Text(parent, style);

The Styles can be applied to Text:

Style	Description
SWT.BORDER	To create text with border
SWT.MULTI	Allow enter content on multiple lines
SWT.PASSWORD	To display the Text as a password field
SWT.V_SCROLL	Show vertical scroll bar, usually used with SWT.MULTI
SWT.H_SCROLL	Show horizontal scroll bar, usually used with SWT.MULTI
SWT.WRAP	Automatically wrap if the text is too long.
SWT.READ_ONLY	Do not allow editing, it is equivalent to calling the text.setEditable (false) method;
SWT.LEFT	Aligning text to the left
SWT.RIGHT	Aligning text to the right
SWT.CENTER	Aligning text to the center

Review some helpful methods that you can use with text fields.

text.setEnabled(enabled);
text.setFont(font);
text.setForeground(color);
text.setEditable(editable);
text.setTextLimit(limit); 
text.setToolTipText(string);
text.setTextDirection(textDirection);
text.addSegmentListener(listener);

2. SWT Text Example

TextDemo.java

package org.o7planning.swt.text;

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class TextDemo {
    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("SWT Text (o7planning.org)");

        RowLayout rowLayout = new RowLayout();
        rowLayout.marginLeft = 10;
        rowLayout.marginTop = 10;
        rowLayout.spacing = 15;
        shell.setLayout(rowLayout);
        // Label
        Label label = new Label(shell, SWT.NONE);
        label.setText("Your Name: ");
        // Text
        Text text = new Text(shell, SWT.BORDER);
        RowData layoutData = new RowData();
        layoutData.width = 150;
        text.setLayoutData(layoutData);
        text.setText("Tran");

        shell.setSize(400, 200);
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}

3. SWT Text and Styles

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The example below illustrates the creation of different SWT Texts with styles such as SWT.BORDER, SWT.PASSWORD, SWT.MULTI, SWT.WRAP, SWT.READ_ONLY,...

TextStylesDemo.java

package org.o7planning.swt.text;

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class TextStylesDemo {
    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("SWT Text (o7planning.org)");

        RowLayout rowLayout = new RowLayout(SWT.VERTICAL);
        rowLayout.marginLeft = 10;
        rowLayout.marginTop = 10;
        rowLayout.spacing = 15;
        shell.setLayout(rowLayout);

        // Text without border
        Text text1 = new Text(shell, SWT.NONE);
        text1.setText("SWT.NONE");
        text1.setLayoutData(new RowData(150, SWT.DEFAULT));

        // Text with border
        Text text2 = new Text(shell, SWT.BORDER);
        text2.setText("SWT.BORDER");
        text2.setLayoutData(new RowData(150, SWT.DEFAULT));

        // Text with border and readonly.
        Text text3 = new Text(shell, SWT.BORDER | SWT.READ_ONLY);
        text3.setText("SWT.BORDER | SWT.READ_ONLY");
        text3.setLayoutData(new RowData(200, SWT.DEFAULT));

        // Password field.
        Text text4 = new Text(shell, SWT.BORDER | SWT.PASSWORD);
        text4.setText("12345");
        text4.setLayoutData(new RowData(150, SWT.DEFAULT));

        // Text with multi lines and show vertiacal scroll.
        Text text5 = new Text(shell, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL);
        text5.setText("SWT.BORDER | SWT.MULTI | SWT.V_SCROLL \n\n Hello World");
        text5.setLayoutData(new RowData(250, 80));  
        // Wrap
        Text text6 = new Text(shell, SWT.BORDER | SWT.WRAP);
        text6.setLayoutData(new RowData(120, 80));
        text6.setText("SWT.BORDER | SWT.WRAP, This is a text, it very long, and need to warp it"); 
        shell.setSize(400, 400);
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}

4. Useful methods

The example below illustrates the usage of methods such as copy(), paste(), cut(), which are usefull methods of TextField.

TextDemo2.java

package org.o7planning.swt.text;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class TextDemo2 {
    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("SWT Text (o7planning.org)");

        RowLayout rowLayout = new RowLayout();
        rowLayout.marginLeft = 10;
        rowLayout.marginTop = 10;
        rowLayout.spacing = 5;
        shell.setLayout(rowLayout);
        // Text
        Text text = new Text(shell, SWT.BORDER);
        text.setLayoutData(new RowData(150, SWT.DEFAULT));
        text.setText("This is a Text");
        // Clear Button
        Button clearButton = new Button(shell, SWT.PUSH);
        clearButton.setText("Clear");
        // Copy Button
        Button copyButton = new Button(shell, SWT.PUSH);
        copyButton.setText("Copy");

        // Cut Button
        Button cutButton = new Button(shell, SWT.PUSH);
        cutButton.setText("Cut");
        // Paste Button
        Button pasteButton = new Button(shell, SWT.PUSH);
        pasteButton.setText("Paste");
        clearButton.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                text.setText("");
                text.forceFocus();
            }
        });
        copyButton.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                text.copy();
                text.forceFocus();
            }
        });
        cutButton.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                text.cut();
                text.forceFocus();
            }
        });
        pasteButton.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                text.paste();
                text.forceFocus();
            }
        });
        shell.setSize(400, 200);
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}

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Java SWT Tutorials

JavaFX Tutorials

Java SWT Text Tutorial with Examples

1. SWT Text

2. SWT Text Example

3. SWT Text and Styles

4. Useful methods

Java SWT Tutorials

Java SWT Tutorials

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