/*
* This file is part of WebLookAndFeel library.
*
* WebLookAndFeel library 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.
*
* WebLookAndFeel library 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 WebLookAndFeel library. If not, see <http://www.gnu.org/licenses/>.
*/
package com.alee.extended.checkbox;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.InputEvent;
import java.awt.event.ItemEvent;
/**
* Custom button model for WebTristateCheckBox component.
*
* @author Mikle Garin
*/
public class TristateCheckBoxModel extends JToggleButton.ToggleButtonModel
{
/**
* Mixed state bit constant used to store into state mask.
*/
public final static int MIXED = 1 << 7;
/**
* Whether partially checked tristate checkbox should be checked or unchecked on toggle.
*/
protected boolean checkMixedOnToggle = WebTristateCheckBoxStyle.checkMixedOnToggle;
/**
* Constructs new model for the specified WebTristateCheckBox.
*/
public TristateCheckBoxModel ()
{
super ();
}
/**
* Returns whether partially checked tristate checkbox should be checked or unchecked on toggle
*
* @return true if partially checked tristate checkbox should be checked on toggle, false if it should be unchecked
*/
public boolean isCheckMixedOnToggle ()
{
return checkMixedOnToggle;
}
/**
* Sets whether partially checked tristate checkbox should be checked or unchecked on toggle.
*
* @param checkMixedOnToggle whether partially checked tristate checkbox should be checked or unchecked on toggle
*/
public void setCheckMixedOnToggle ( final boolean checkMixedOnToggle )
{
this.checkMixedOnToggle = checkMixedOnToggle;
}
/**
* Sets check state.
*
* @param state new check state
*/
public void setState ( final CheckState state )
{
switch ( state )
{
case unchecked:
setSelected ( false );
break;
case checked:
setSelected ( true );
break;
case mixed:
setMixed ( true );
break;
}
}
public CheckState getState ()
{
return isMixed () ? CheckState.mixed : isSelected () ? CheckState.checked : CheckState.unchecked;
}
/**
* Sets whether checkbox is pressed or not.
*
* @param pressed whether checkbox is pressed or not
*/
@Override
public void setPressed ( final boolean pressed )
{
if ( !isEnabled () || isPressed () == pressed )
{
return;
}
if ( !pressed && isArmed () )
{
goToNextState ();
}
stateMask = pressed ? stateMask | PRESSED : stateMask & ~PRESSED;
fireStateChanged ();
if ( !isPressed () && isArmed () )
{
int modifiers = 0;
final AWTEvent currentEvent = EventQueue.getCurrentEvent ();
if ( currentEvent instanceof InputEvent )
{
modifiers = ( ( InputEvent ) currentEvent ).getModifiers ();
}
else if ( currentEvent instanceof ActionEvent )
{
modifiers = ( ( ActionEvent ) currentEvent ).getModifiers ();
}
final long time = EventQueue.getMostRecentEventTime ();
fireActionPerformed ( new ActionEvent ( this, ActionEvent.ACTION_PERFORMED, getActionCommand (), time, modifiers ) );
}
}
/**
* Applies next check state to this tristate checkbox according to its settings.
*/
protected void goToNextState ()
{
setState ( getNextState ( getState () ) );
}
/**
* Sets whether checkbox is in checked state or not.
*
* @param selected whether should set checked state or not
*/
@Override
public void setSelected ( final boolean selected )
{
final boolean mixed = isMixed ();
if ( mixed )
{
stateMask = stateMask & ~MIXED;
stateMask = selected ? stateMask & ~SELECTED : stateMask | SELECTED;
}
super.setSelected ( selected );
}
/**
* Returns whether checkbox is in mixed state or not.
*
* @return true if checkbox is in mixed state, false otherwise
*/
public boolean isMixed ()
{
return ( stateMask & MIXED ) != 0;
}
/**
* Sets whether checkbox is in mixed state or not.
*
* @param mixed whether should set mixed check state or not
*/
public void setMixed ( final boolean mixed )
{
if ( ( isMixed () == mixed ) )
{
return;
}
stateMask = mixed ? stateMask | MIXED | SELECTED : stateMask & ~MIXED;
fireStateChanged ();
fireItemStateChanged ( new ItemEvent ( this, ItemEvent.ITEM_STATE_CHANGED, this, 3 ) );
}
/**
* Returns next check state for check invertion action.
*
* @param checkState current check state
* @return next check state for check invertion action
*/
protected CheckState getNextState ( final CheckState checkState )
{
switch ( checkState )
{
case unchecked:
return checkMixedOnToggle ? CheckState.mixed : CheckState.checked;
case checked:
return checkMixedOnToggle ? CheckState.unchecked : CheckState.mixed;
case mixed:
return checkMixedOnToggle ? CheckState.checked : CheckState.unchecked;
default:
return CheckState.unchecked;
}
}
}