/*
* LogicalWindow.java
*
* Copyright (C) 2009-12 by RStudio, Inc.
*
* Unless you have received this program directly from RStudio pursuant
* to the terms of a commercial license agreement with RStudio, then
* this program is licensed to you under the terms of version 3 of the
* GNU Affero General Public License. This program is distributed WITHOUT
* ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
* AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
*
*/
package org.rstudio.core.client.layout;
import com.google.gwt.event.shared.HandlerManager;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.ui.Widget;
import org.rstudio.core.client.events.EnsureHeightEvent;
import org.rstudio.core.client.events.EnsureHeightHandler;
import org.rstudio.core.client.events.HasWindowStateChangeHandlers;
import org.rstudio.core.client.events.WindowStateChangeEvent;
import org.rstudio.core.client.events.WindowStateChangeHandler;
import org.rstudio.core.client.theme.MinimizedWindowFrame;
import org.rstudio.core.client.theme.WindowFrame;
import static org.rstudio.core.client.layout.WindowState.*;
/**
* Represents the combination of states and objects that model a single
* logical window in the DualWindowLayoutPanel.
*/
public class LogicalWindow implements HasWindowStateChangeHandlers,
WindowStateChangeHandler,
EnsureHeightHandler
{
public LogicalWindow(WindowFrame normal,
MinimizedWindowFrame minimized)
{
normal_ = normal;
minimized_ = minimized;
normal_.addWindowStateChangeHandler(this);
normal_.addEnsureHeightHandler(this);
minimized_.addWindowStateChangeHandler(this);
}
public WindowFrame getNormal()
{
return normal_;
}
public MinimizedWindowFrame getMinimized()
{
return minimized_;
}
public void focus()
{
assert state_ != MINIMIZE && state_ != HIDE;
normal_.focus();
}
public Widget getActiveWidget()
{
switch (state_)
{
case EXCLUSIVE:
case MAXIMIZE:
case NORMAL:
return normal_;
case MINIMIZE:
return minimized_;
case HIDE:
return null;
}
assert false;
throw new IllegalStateException("Unknown state " + state_);
}
public HandlerRegistration addWindowStateChangeHandler(
WindowStateChangeHandler handler)
{
return events_.addHandler(WindowStateChangeEvent.TYPE, handler);
}
public HandlerRegistration addEnsureHeightHandler(
EnsureHeightHandler handler)
{
return events_.addHandler(EnsureHeightEvent.TYPE, handler);
}
public void onWindowStateChange(WindowStateChangeEvent event)
{
WindowState newState = event.getNewState();
if (state_ == EXCLUSIVE && newState == MAXIMIZE)
newState = NORMAL;
if (newState == state_)
newState = NORMAL;
events_.fireEvent(new WindowStateChangeEvent(newState, event.skipFocusChange()));
}
public void transitionToState(WindowState newState)
{
if (newState == MAXIMIZE)
normal_.addStyleDependentName("maximized");
else
normal_.removeStyleDependentName("maximized");
if (newState == EXCLUSIVE)
normal_.addStyleDependentName("exclusive");
else
normal_.removeStyleDependentName("exclusive");
state_ = newState;
if (getActiveWidget() == normal_)
normal_.onBeforeShow();
}
public WindowState getState()
{
return state_;
}
@Override
public void onEnsureHeight(EnsureHeightEvent event)
{
if (event.getHeight() == EnsureHeightEvent.MAXIMIZED)
{
if (getState() != WindowState.MAXIMIZE)
events_.fireEvent(new WindowStateChangeEvent(WindowState.MAXIMIZE));
}
else if (event.getHeight() == EnsureHeightEvent.NORMAL)
{
if (getState() != WindowState.NORMAL)
events_.fireEvent(new WindowStateChangeEvent(WindowState.NORMAL));
}
else
{
events_.fireEvent(event);
}
}
private HandlerManager events_ = new HandlerManager(this);
private WindowFrame normal_;
private MinimizedWindowFrame minimized_;
private WindowState state_;
}