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WebLaf is a Java Swing Look and Feel and extended components library for cross-platform applications
/*
* 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 popupListeners = new ArrayList ( 2 );
// Popup constants
protected static final int fadeFps = 24;
protected static final long fadeTime = 400;
protected boolean animated = false;
protected boolean closeOnFocusLoss = false;
protected boolean requestFocusOnShow = true;
protected Component defaultFocusComponent = null;
protected List> focusableChildren = new ArrayList> ();
protected Component lastComponent = null;
protected ComponentListener lastComponentListener = null;
protected AncestorListener lastAncestorListener = null;
protected boolean focused = false;
// Animation variables
protected FadeStateType fadeStateType;
protected float fade = 0;
protected WebTimer fadeTimer;
// Focus tracker strong reference
protected DefaultFocusTracker focusTracker;
public WebInnerPopup ()
{
this ( PopupManager.getDefaultPopupStyleId () );
}
public WebInnerPopup ( final StyleId styleId )
{
super ( styleId );
initializePopup ();
}
/**
* Initializes various popup settings.
*/
protected void initializePopup ()
{
// Popup doesn't allow focus to move outside of it
setFocusCycleRoot ( true );
// Listeners to block events passing to underlying components
EmptyMouseAdapter.install ( this );
// Fade in-out timer
fadeTimer = new WebTimer ( "WebPopup.fade", 1000 / fadeFps );
fadeTimer.addActionListener ( new ActionListener ()
{
@Override
public void actionPerformed ( final ActionEvent e )
{
final float roundsCount = fadeTime / ( 1000f / fadeFps );
final float fadeSpeed = 1f / roundsCount;
if ( fadeStateType.equals ( FadeStateType.fadeIn ) )
{
if ( fade < 1f )
{
fade = Math.min ( fade + fadeSpeed, 1f );
WebInnerPopup.this.repaint ();
}
else
{
fadeTimer.stop ();
}
}
else if ( fadeStateType.equals ( FadeStateType.fadeOut ) )
{
if ( fade > 0 )
{
fade = Math.max ( fade - fadeSpeed, 0f );
WebInnerPopup.this.repaint ();
}
else
{
hidePopupImpl ();
fadeTimer.stop ();
}
}
}
} );
// Listener to determine popup appearance and disappearance
addAncestorListener ( new AncestorAdapter ()
{
@Override
public void ancestorAdded ( final AncestorEvent event )
{
if ( requestFocusOnShow )
{
if ( defaultFocusComponent != null )
{
defaultFocusComponent.requestFocusInWindow ();
}
else
{
WebInnerPopup.this.transferFocus ();
}
}
// Starting fade-in animation
if ( animated )
{
fade = 0;
fadeStateType = FadeStateType.fadeIn;
fadeTimer.start ();
}
else
{
fade = 1;
}
// Informing about popup state change
firePopupOpened ();
}
@Override
public void ancestorRemoved ( final AncestorEvent event )
{
// Informing about popup state change
firePopupClosed ();
}
} );
// Focus tracking
focusTracker = new DefaultFocusTracker ( true )
{
@Override
public boolean isTrackingEnabled ()
{
return WebInnerPopup.this.isShowing ();
}
@Override
public void focusChanged ( final boolean focused )
{
WebInnerPopup.this.focusChanged ( focused );
}
};
FocusManager.addFocusTracker ( this, focusTracker );
}
/**
* Called when this popup receive or lose focus.
* You can your own behavior for focus change by overriding this method.
*
* @param focused whether popup has focus or not
*/
protected void focusChanged ( final boolean focused )
{
// todo Replace with MultiFocusTracker (for multiply components)
if ( WebInnerPopup.this.isShowing () && !focused && !isChildFocused () && closeOnFocusLoss )
{
hidePopup ();
}
}
/**
* Returns popup layer this WebPopup is added into.
*
* @return popup layer this WebPopup is added into
*/
public PopupLayer getPopupLayer ()
{
return ( PopupLayer ) getParent ();
}
/**
* Popup settings
*/
public boolean isAnimated ()
{
return animated;
}
public void setAnimated ( final boolean animated )
{
this.animated = animated;
}
public boolean isCloseOnFocusLoss ()
{
return closeOnFocusLoss;
}
public void setCloseOnFocusLoss ( final boolean closeOnFocusLoss )
{
this.closeOnFocusLoss = closeOnFocusLoss;
}
public boolean isRequestFocusOnShow ()
{
return requestFocusOnShow;
}
public void setRequestFocusOnShow ( final boolean requestFocusOnShow )
{
this.requestFocusOnShow = requestFocusOnShow;
}
public Component getDefaultFocusComponent ()
{
return defaultFocusComponent;
}
public void setDefaultFocusComponent ( final Component defaultFocusComponent )
{
this.defaultFocusComponent = defaultFocusComponent;
}
/**
* Returns focusable children that don't force dialog to close even if it set to close on focus loss.
*
* @return focusable children that don't force dialog to close even if it set to close on focus loss
*/
public List getFocusableChildren ()
{
final List actualFocusableChildren = new ArrayList ( focusableChildren.size () );
for ( final WeakReference focusableChild : focusableChildren )
{
final Component component = focusableChild.get ();
if ( component != null )
{
actualFocusableChildren.add ( component );
}
}
return actualFocusableChildren;
}
/**
* Adds focusable child that won't force dialog to close even if it set to close on focus loss.
*
* @param child focusable child that won't force dialog to close even if it set to close on focus loss
*/
public void addFocusableChild ( final Component child )
{
focusableChildren.add ( new WeakReference ( child ) );
}
/**
* Removes focusable child that doesn't force dialog to close even if it set to close on focus loss.
*
* @param child focusable child that doesn't force dialog to close even if it set to close on focus loss
*/
public void removeFocusableChild ( final Component child )
{
focusableChildren.remove ( child );
}
/**
* Returns whether one of focusable children is focused or not.
*
* @return true if one of focusable children is focused, false otherwise
*/
public boolean isChildFocused ()
{
for ( final WeakReference focusableChild : focusableChildren )
{
final Component component = focusableChild.get ();
if ( component != null )
{
if ( SwingUtils.hasFocusOwner ( component ) )
{
return true;
}
}
}
return false;
}
/**
* Popup display methods
*/
public void showAsPopupMenu ( final Component component )
{
showPopup ( component, new DataProvider ()
{
@Override
public Rectangle provide ()
{
// Determining component position inside window
final Rectangle cb = SwingUtils.getBoundsInWindow ( component );
final Dimension rps = SwingUtils.getRootPane ( component ).getSize ();
final Dimension ps = WebInnerPopup.this.getPreferredSize ();
// Painter bp = getPainter ();
// Insets bm = bp != null ? bp.getMargin ( this ) : new Insets ( 0, 0, 0, 0 );
// Choosing display way
final Point p = new Point ();
if ( cb.x + ps.width < rps.width || rps.width - cb.x - ps.width > cb.x )
{
// Expanding popup to the right side
p.x = 0;
}
else
{
// Expanding popup to the left side
p.x = cb.width - ps.width;
}
if ( cb.y + cb.height + ps.height < rps.height || rps.height - cb.y - cb.height - ps.height > cb.y )
{
// Displaying popup below the component
p.y = cb.height;
}
else
{
// Displaying popup above the component
p.y = -ps.height;
}
// Returning proper location
return new Rectangle ( p, WebInnerPopup.this.getPreferredSize () );
}
} );
}
public void showPopup ( final Component component )
{
PopupManager.showPopup ( component, this, requestFocusOnShow );
clearLocationListeners ();
}
public void showPopup ( final Component component, final Rectangle bounds )
{
showPopup ( component, bounds.x, bounds.y, bounds.width, bounds.height );
}
public void showPopup ( final Component component, final int x, final int y, final int width, final int height )
{
updatePopupBounds ( component, x, y, width, height );
PopupManager.showPopup ( component, this, requestFocusOnShow );
updateComponentAncestorListener ( component, x, y, width, height );
}
public void showPopup ( final Component component, final Point location )
{
showPopup ( component, location.x, location.y );
}
public void showPopup ( final Component component, final int x, final int y )
{
showPopup ( component, new DataProvider ()
{
@Override
public Rectangle provide ()
{
final Dimension ps = WebInnerPopup.this.getPreferredSize ();
return new Rectangle ( x, y, ps.width, ps.height );
}
} );
}
public void showPopup ( final Component component, final DataProvider boundsProvider )
{
updatePopupBounds ( component, boundsProvider.provide () );
PopupManager.showPopup ( component, this, requestFocusOnShow );
updateLocationListeners ( component, boundsProvider );
}
protected void updatePopupBounds ( final Component component, final Rectangle bounds )
{
updatePopupBounds ( component, bounds.x, bounds.y, bounds.width, bounds.height );
}
protected void updatePopupBounds ( final Component component, final int x, final int y, final int width, final int height )
{
// Updating popup bounds with component-relative values
if ( component.isShowing () )
{
final Rectangle cb = SwingUtils.getBoundsInWindow ( component );
setBounds ( cb.x + x, cb.y + y, width, height );
revalidate ();
repaint ();
}
}
protected void updateComponentAncestorListener ( final Component component, final int x, final int y, final int width,
final int height )
{
clearLocationListeners ();
lastComponent = component;
if ( component instanceof JComponent )
{
lastAncestorListener = new AncestorAdapter ()
{
@Override
public void ancestorMoved ( final AncestorEvent event )
{
updatePopupBounds ( component, x, y, width, height );
}
};
( ( JComponent ) lastComponent ).addAncestorListener ( lastAncestorListener );
}
}
protected void updateLocationListeners ( final Component component, final DataProvider boundsProvider )
{
clearLocationListeners ();
lastComponent = component;
lastComponentListener = new ComponentAdapter ()
{
@Override
public void componentResized ( final ComponentEvent e )
{
updatePopupBounds ( component, boundsProvider.provide () );
}
@Override
public void componentMoved ( final ComponentEvent e )
{
updatePopupBounds ( component, boundsProvider.provide () );
}
};
lastComponent.addComponentListener ( lastComponentListener );
if ( component instanceof JComponent )
{
lastAncestorListener = new AncestorAdapter ()
{
@Override
public void ancestorMoved ( final AncestorEvent event )
{
updatePopupBounds ( component, boundsProvider.provide () );
}
};
( ( JComponent ) lastComponent ).addAncestorListener ( lastAncestorListener );
}
}
protected void clearLocationListeners ()
{
if ( lastComponent != null )
{
if ( lastComponentListener != null )
{
lastComponent.removeComponentListener ( lastComponentListener );
}
if ( lastAncestorListener != null && lastComponent instanceof JComponent )
{
( ( JComponent ) lastComponent ).removeAncestorListener ( lastAncestorListener );
}
}
}
/**
* Modal popup display methods
*/
public void showPopupAsModal ( final Component component )
{
showPopupAsModal ( component, false, false );
}
public void showPopupAsModal ( final Component component, final boolean hfill, final boolean vfill )
{
PopupManager.showModalPopup ( component, this, hfill, vfill );
}
/**
* Popup hide methods
*/
public void hidePopup ()
{
if ( animated )
{
fadeStateType = FadeStateType.fadeOut;
if ( !fadeTimer.isRunning () )
{
fadeTimer.start ();
}
}
else
{
hidePopupImpl ();
}
}
protected void hidePopupImpl ()
{
clearLocationListeners ();
final PopupLayer layer = ( PopupLayer ) this.getParent ();
if ( layer != null )
{
layer.hidePopup ( this );
}
}
/**
* Popup pack method
*/
public void packPopup ()
{
setSize ( getPreferredSize () );
}
public void updateBounds ()
{
if ( lastAncestorListener != null )
{
// todo Replace with a better solution
lastAncestorListener.ancestorMoved ( null );
}
}
/**
* Shape-based point check
*/
@Override
public boolean contains ( final int x, final int y )
{
return fadeStateType != FadeStateType.fadeOut && provideShape ().contains ( x, y );
}
/**
* Popup listeners
*/
public void addPopupListener ( final PopupListener listener )
{
popupListeners.add ( listener );
}
public void removePopupListener ( final PopupListener listener )
{
popupListeners.remove ( listener );
}
public void firePopupWillBeOpened ()
{
for ( final PopupListener listener : CollectionUtils.copy ( popupListeners ) )
{
listener.popupWillBeOpened ();
}
}
public void firePopupOpened ()
{
for ( final PopupListener listener : CollectionUtils.copy ( popupListeners ) )
{
listener.popupOpened ();
}
}
public void firePopupWillBeClosed ()
{
for ( final PopupListener listener : CollectionUtils.copy ( popupListeners ) )
{
listener.popupWillBeClosed ();
}
}
public void firePopupClosed ()
{
for ( final PopupListener listener : CollectionUtils.copy ( popupListeners ) )
{
listener.popupClosed ();
}
}
@Override
protected void paintComponent ( final Graphics g )
{
// Fade animation and opacity
if ( fade < 1f )
{
GraphicsUtils.setupAlphaComposite ( ( Graphics2D ) g, fade );
}
super.paintComponent ( g );
}
}