/*
* This file is part of muCommander, http://www.mucommander.com
* Copyright (C) 2002-2016 Maxence Bernard
*
* muCommander 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 3 of the License, or
* (at your option) any later version.
*
* muCommander 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.mucommander.ui.action.impl;
import java.util.Map;
import com.mucommander.ui.action.MuAction;
import com.mucommander.ui.event.ActivePanelListener;
import com.mucommander.ui.event.LocationEvent;
import com.mucommander.ui.event.LocationListener;
import com.mucommander.ui.main.FolderPanel;
import com.mucommander.ui.main.MainFrame;
/**
* This class is an abstract {@link MuAction} that operates on the current folder. It monitors changes in the active
* panel's location and calls {@link #toggleEnabledState()} when the location has changed, or when the active panel
* itself has changed, in order to enable or disable this action.
*
* @author Maxence Bernard, Nicolas Rinaudo
*/
public abstract class ParentFolderAction extends MuAction implements ActivePanelListener, LocationListener {
public ParentFolderAction(MainFrame mainFrame, Map<String,Object> properties) {
super(mainFrame, properties);
// Listen to active table change events
mainFrame.addActivePanelListener(this);
// Listen to location change events
mainFrame.getLeftPanel().getLocationManager().addLocationListener(this);
mainFrame.getRightPanel().getLocationManager().addLocationListener(this);
toggleEnabledState();
}
//////////////////////
// Abstract methods //
//////////////////////
/**
* Enables or disables this action based on the location of the currently active {@link FolderPanel}.
* This method is called once by the constructor to set the initial state. Then it is called every time the location
* of the currently active <code>FolderPanel</code> has changed, and when the currently active <code>FolderPanel</code>
* has changed.
*/
protected abstract void toggleEnabledState();
/////////////////////////////////
// ActivePanelListener methods //
/////////////////////////////////
public void activePanelChanged(FolderPanel folderPanel) {
toggleEnabledState();
}
/**********************************
* LocationListener Implementation
**********************************/
public void locationChanged(LocationEvent e) {
toggleEnabledState();
}
public void locationChanging(LocationEvent locationEvent) { }
public void locationCancelled(LocationEvent locationEvent) { }
public void locationFailed(LocationEvent locationEvent) { }
}