Files
wudsn-ide/com.wudsn.ide.base/src/com/wudsn/ide/base/gui/Action.java
2019-01-13 00:36:57 +01:00

107 lines
2.8 KiB
Java

/**
* Copyright (C) 2009 - 2019 <a href="https://www.wudsn.com" target="_top">Peter Dell</a>
*
* This file is part of WUDSN IDE.
*
* WUDSN IDE is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* WUDSN IDE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with WUDSN IDE. If not, see <http://www.gnu.org/licenses/>.
*/
package com.wudsn.ide.base.gui;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
/**
* Action class which abstracts from SWT.
*
* @author Peter Dell
*
*/
public final class Action implements SelectionListener {
private int id;
private ActionListener actionListener;
private boolean enabled;
/**
* Creates a new action.
*
* @param id
* The action is, a non-negative integer.
* @param actionListener
* The action listener, not <code>null</code>.
*/
public Action(int id, ActionListener actionListener) {
if (id < 0) {
throw new IllegalArgumentException("Parameter 'id' must not be negative. Specified value is " + id + ".");
}
if (actionListener == null) {
throw new IllegalArgumentException("Parameter 'actionListener' must not be null.");
}
this.id = id;
this.actionListener = actionListener;
this.enabled = true;
}
/**
* Gets the id of the action.
*
* @return The id of the action, a non-negative integer.
*/
public int getId() {
return id;
}
/**
* Sets the enabled state of the action. Disabled actions do not fire.
*
* @param enabled
* <code>true</code> to enable the action, <code>false</code> to
* disable the action.
*/
public void setEnabled(boolean enabled) {
this.enabled = enabled;
}
/**
* Callback from SWT, do not use.
*/
@Override
public void widgetDefaultSelected(SelectionEvent e) {
performAction();
}
/**
* Callback from SWT, do not use.
*/
@Override
public void widgetSelected(SelectionEvent e) {
performAction();
}
private void performAction() {
if (enabled) {
actionListener.performAction(this);
}
}
@Override
public String toString() {
return "actionId=" + id;
}
}