/*
* Copyright (c) 2013, 2014 Chris Newland.
* Licensed under https://github.com/AdoptOpenJDK/jitwatch/blob/master/LICENSE-BSD
* Instructions: https://github.com/AdoptOpenJDK/jitwatch/wiki
*/
package org.adoptopenjdk.jitwatch.ui.triview;
import java.util.Deque;
import java.util.LinkedList;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import org.adoptopenjdk.jitwatch.model.IMetaMember;
public class TriViewNavigationStack
{
private boolean isCtrlPressed = false;
private Deque<IMetaMember> navigationStack = new LinkedList<>();
private TriView triView;
public TriViewNavigationStack(final TriView triView, final Scene scene)
{
this.triView = triView;
scene.setOnKeyPressed(new EventHandler<KeyEvent>()
{
@Override
public void handle(KeyEvent event)
{
KeyCode code = event.getCode();
if (code == KeyCode.CONTROL)
{
isCtrlPressed = true;
}
}
});
scene.setOnKeyReleased(new EventHandler<KeyEvent>()
{
@Override
public void handle(KeyEvent event)
{
KeyCode code = event.getCode();
if (code == KeyCode.CONTROL)
{
isCtrlPressed = false;
}
}
});
scene.setOnKeyReleased(new EventHandler<KeyEvent>()
{
@Override
public void handle(KeyEvent event)
{
KeyCode code = event.getCode();
if (code == KeyCode.BACK_SPACE)
{
if (!navigationStack.isEmpty())
{
IMetaMember previous = navigationStack.pop();
triView.setMember(previous, false);
}
}
}
});
}
public void navigateTo(IMetaMember nextMember)
{
if (nextMember != null)
{
IMetaMember currentMember = triView.getMetaMember();
if (currentMember != null)
{
navigationStack.push(currentMember);
}
triView.setMember(nextMember, false);
}
}
public boolean isCtrlPressed()
{
return isCtrlPressed;
}
}