Java JTextArea applyDefaultProperties(final JTextArea comp)

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  5. applyDefaultProperties(final JTextArea comp)

Description

Sets default background and foreground color as well as a default font for the specified component.

License

Open Source License

Parameter

Parameter Description
comp Component to set default properties for. Can be <code>null</code>.

Declaration 

public static void applyDefaultProperties(final JTextArea comp)

Method Source Code


//package com.java2s;
import java.awt.Button;

import java.awt.Checkbox;
import java.awt.Choice;
import java.awt.Color;
import java.awt.Component;

import java.awt.Dialog;

import java.awt.Font;

import java.awt.Label;
import java.awt.List;
import java.awt.Panel;

import java.awt.ScrollPane;
import java.awt.Scrollbar;
import java.awt.TextArea;
import java.awt.TextComponent;
import java.awt.TextField;

import java.awt.Window;

import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JPopupMenu;
import javax.swing.JRadioButton;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
import javax.swing.JSeparator;
import javax.swing.JSplitPane;
import javax.swing.JTabbedPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JTree;
import javax.swing.UIManager;
import javax.swing.text.JTextComponent;

public class Main {
    /**/*  w  w  w  . jav a2  s  .  c om*/
     * Defines the default fall back color for backgrounds. The default is
     * white.
     */
    private static final Color DEFAULT_BACKGROUND = Color.white;
    /**
     * Defines the default fall back color for foregrounds. The default is
     * black.
     */
    private static final Color DEFAULT_FOREGROUND = Color.black;
    /**
     * Defines the default fall back font to be used when no other font is
     * available. The default is Font("Helvetica", Font.PLAIN, 12).
     */
    private static Font g_defaultFont = null;

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final Button comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "Button.background", // $NON-NLS-1$
                "Button.foreground", // $NON-NLS-1$
                "Button.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JButton comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "Button.background", // $NON-NLS-1$
                "Button.foreground", // $NON-NLS-1$
                "Button.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final Choice comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "ComboBox.background", // $NON-NLS-1$
                "ComboBox.foreground", // $NON-NLS-1$
                "ComboBox.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JComboBox comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "ComboBox.background", // $NON-NLS-1$
                "ComboBox.foreground", // $NON-NLS-1$
                "ComboBox.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final Label comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "Label.background", // $NON-NLS-1$
                "Label.foreground", // $NON-NLS-1$
                "Label.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JLabel comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "Label.background", // $NON-NLS-1$
                "Label.foreground", // $NON-NLS-1$
                "Label.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final List comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "List.background", // $NON-NLS-1$
                "List.foreground", // $NON-NLS-1$
                "List.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JList comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "List.background", // $NON-NLS-1$
                "List.foreground", // $NON-NLS-1$
                "List.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JMenuItem comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "MenuItem.background", // $NON-NLS-1$
                "MenuItem.foreground", // $NON-NLS-1$
                "MenuItem.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JMenu comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "Menu.background", // $NON-NLS-1$
                "Menu.foreground", // $NON-NLS-1$
                "Menu.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JPopupMenu comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "PopupMenu.background", // $NON-NLS-1$
                "PopupMenu.foreground", // $NON-NLS-1$
                "PopupMenu.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JMenuBar comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "MenuBar.background", // $NON-NLS-1$
                "MenuBar.foreground", // $NON-NLS-1$
                "MenuBar.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JOptionPane comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "OptionPane.background", // $NON-NLS-1$
                "OptionPane.foreground", // $NON-NLS-1$
                "OptionPane.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final Checkbox comp) {
        if (comp == null) {
            return;
        }

        if (comp.getCheckboxGroup() == null) {
            applyProperties(comp, "CheckBox.background", // $NON-NLS-1$
                    "CheckBox.foreground", // $NON-NLS-1$
                    "CheckBox.font"); // $NON-NLS-1$
        } else {
            // Checkbox is in group
            applyProperties(comp, "RadioButton.background", // $NON-NLS-1$
                    "RadioButton.foreground", // $NON-NLS-1$
                    "RadioButton.font"); // $NON-NLS-1$
        }
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JCheckBox comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "CheckBox.background", // $NON-NLS-1$
                "CheckBox.foreground", // $NON-NLS-1$
                "CheckBox.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JRadioButton comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "RadioButton.background", // $NON-NLS-1$
                "RadioButton.foreground", // $NON-NLS-1$
                "RadioButton.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final Scrollbar comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "ScrollBar.background", // $NON-NLS-1$
                "ScrollBar.foreground", // $NON-NLS-1$
                null); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JScrollBar comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "ScrollBar.background", // $NON-NLS-1$
                "ScrollBar.foreground", // $NON-NLS-1$
                null);
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final ScrollPane comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "ScrollPane.background", // $NON-NLS-1$
                "ScrollPane.foreground", // $NON-NLS-1$
                "ScrollPane.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JScrollPane comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "ScrollPane.background", // $NON-NLS-1$
                "ScrollPane.foreground", // $NON-NLS-1$
                "ScrollPane.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JSeparator comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "Separator.background", // $NON-NLS-1$
                "Separator.foreground", // $NON-NLS-1$
                "Separator.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JSplitPane comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "SplitPane.background", // $NON-NLS-1$
                null, null);
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JTabbedPane comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "TabbedPane.background", // $NON-NLS-1$
                "TabbedPane.foreground", // $NON-NLS-1$
                "TabbedPane.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JTable comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "Table.background", // $NON-NLS-1$
                "Table.foreground", // $NON-NLS-1$
                "Table.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final TextArea comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "TextArea.background", // $NON-NLS-1$
                "TextArea.foreground", // $NON-NLS-1$
                "TextArea.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JTextArea comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "TextArea.background", // $NON-NLS-1$
                "TextArea.foreground", // $NON-NLS-1$
                "TextArea.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final TextField comp) {
        if (comp == null) {
            return;
        }

        if (comp.getEchoChar() != (char) 0) {
            applyProperties(comp, "PasswordField.background", // $NON-NLS-1$
                    "PasswordField.foreground", // $NON-NLS-1$
                    "PasswordField.font"); // $NON-NLS-1$
        } else {
            // Normal text field
            applyProperties(comp, "TextField.background", // $NON-NLS-1$
                    "TextField.foreground", // $NON-NLS-1$
                    "TextField.font"); // $NON-NLS-1$
        }
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JTextField comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "TextField.background", // $NON-NLS-1$
                "TextField.foreground", // $NON-NLS-1$
                "TextField.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JPasswordField comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "PasswordField.background", // $NON-NLS-1$
                "PasswordField.foreground", // $NON-NLS-1$
                "PasswordField.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JTree comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "Tree.background", // $NON-NLS-1$
                "Tree.foreground", // $NON-NLS-1$
                "Tree.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final Panel comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "Panel.background", // $NON-NLS-1$
                "Panel.foreground", // $NON-NLS-1$
                "Panel.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JPanel comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "Panel.background", // $NON-NLS-1$
                "Panel.foreground", // $NON-NLS-1$
                "Panel.font"); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final Window comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "window", // $NON-NLS-1$
                "windowText", // $NON-NLS-1$
                null); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final Dialog comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "control", // $NON-NLS-1$
                "controlText", // $NON-NLS-1$
                null); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JDialog comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "control", // $NON-NLS-1$
                "controlText", // $NON-NLS-1$
                null); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final TextComponent comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "text", // $NON-NLS-1$
                "textText", // $NON-NLS-1$
                null); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component. It uses values defined as UIManager
     * properties.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final JTextComponent comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "text", // $NON-NLS-1$
                "textText", // $NON-NLS-1$
                null); // $NON-NLS-1$
    }

    /**
     * Sets default background and foreground color as well as a default font
     * for the specified component.
     * 
     * @param comp
     *            Component to set default properties for. Can be
     *            <code>null</code>.
     */
    public static void applyDefaultProperties(final Component comp) {
        if (comp == null) {
            return;
        }

        applyProperties(comp, "control", // $NON-NLS-1$
                "controlText", // $NON-NLS-1$
                null);
    }

    /**
     * Sets background and foreground color and a font for the specified
     * component.
     * 
     * @param comp
     *            Component to set properties for.
     * @param colBack
     *            Background color. Can be <code>null</code> to use parent color
     *            (not suggested due to differences between Java VMs).
     * @param colFore
     *            Foreground color. Can be <code>null</code> to use parent color
     *            (not suggested due to differences between Java VMs).
     * @param font
     *            Font. Can be <code>null</code> to use parent font (not
     *            suggested due to differences between Java VMs).
     */
    public static void applyProperties(final Component comp, final Color colBack, final Color colFore,
            final Font font) {
        if (comp != null) {
            comp.setBackground(colBack);
            comp.setForeground(colFore);
            comp.setFont(font);
        }
    }

    /**
     * Sets background and foreground color and a font for the specified
     * component.
     * 
     * @param comp
     *            Component to set properties for. If <code>
     * null</code> nothing happens.
     * @param strKeyBackground
     *            Key for background color defined in
     *            <code>javax.swing.UIManager</code>. If it is <code>null</code>
     *            or not found first the key "control" will be tried, and if
     *            still <code>null</code>, a "fallback" color will be taken.
     * @param strKeyForeground
     *            Key for background color defined in
     *            <code>javax.swing.UIManager</code>. If it is <code>null</code>
     *            or not found first the key "textText" will be tried, and if
     *            still <code>null</code>, a "fallback" color will be taken.
     * @param strKeyFont
     *            Key for font defined in <code>
     * javax.swing.UIManager</code>. If it is <code>null</code> or not found
     *            first the key "Label.font" will be tried, and if still
     *            <code>null</code>, a "fallback" font will be taken.
     */
    public static void applyProperties(final Component comp, final String strKeyBackground,
            final String strKeyForeground, final String strKeyFont) {
        if (comp != null) {
            Color colBack = null;
            Color colFore = null;
            Font font = null;

            if (strKeyBackground != null) {
                colBack = UIManager.getColor(strKeyBackground);
            }

            if (strKeyForeground != null) {
                colFore = UIManager.getColor(strKeyForeground);
            }

            if (strKeyFont != null) {
                font = UIManager.getFont(strKeyFont);
            }

            if (colBack == null) {
                colBack = UIManager.getColor("control"); // $NON-NLS-1$

                if (colBack == null) {
                    colBack = DEFAULT_BACKGROUND; // Fall back default
                }
            }

            if (colFore == null) {
                colFore = UIManager.getColor("controlText"); // $NON-NLS-1$

                if (colFore == null) {
                    colFore = DEFAULT_FOREGROUND; // Fall back default
                }
            }

            if (font == null) {
                font = UIManager.getFont("Label.font"); // $NON-NLS-1$

                if (font == null) {
                    font = g_defaultFont; // Fall back default
                }
            }

            applyProperties(comp, colBack, colFore, font);
        } // end if
    }
}

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  2. addStyle(JTextArea textArea, String labelName, boolean isBorder)
  3. adjustToText(JTextArea testString)
  4. appendNewLine(final JTextArea textArea, final String line)
  5. attachSimpleUndoManager(JTextArea jta)
  6. blockUncomment(JTextArea scriptPanel)
  7. clearTextArea(JTextArea textArea)
  8. columns(JTextArea testString)