linenumberaction.java

具有不同语法高亮的编辑器实例

/*
 * LineNumberAction.java - Action to enable/disable line numbers in RText.
 */
package org.fife.rtext;

import java.awt.event.ActionEvent;
import javax.swing.AbstractAction;
import javax.swing.ImageIcon;
import javax.swing.KeyStroke;

/**
 * Action used by an <code>AbstractMainView</code> to enable viewing
 * line numbers for the open documents.
 */
class LineNumberAction extends AbstractAction {

	private RText owner;


/*****************************************************************************/


	/**
	 * Creates a new <code>LineNumberAction</code>.
	 *
	 * @param text The text associated with the action.
	 * @param icon The icon associated with the action.
	 * @param desc The description of the action (used in tooltips???).
	 * @param mnemonic The mnemonic for the action.
	 * @param accelerator The accelerator key for the action.
	 * @param owner The rtext window that owns this action.
	 */
	public LineNumberAction(String text, ImageIcon icon, String desc,
				Integer mnemonic, KeyStroke accelerator, RText owner) {
		super(text, icon);
		putValue(ACCELERATOR_KEY, accelerator);
		putValue(SHORT_DESCRIPTION, desc);
		putValue(MNEMONIC_KEY, mnemonic);
		this.owner = owner;
	}


/*****************************************************************************/


	// Callback routine called when user uses this component.
	public void actionPerformed(ActionEvent e) {
		AbstractMainView mainView = owner.getMainView();
		mainView.setLineNumbersEnabled(!mainView.getLineNumbersEnabled());
	}


/*****************************************************************************/

}