/* Copyright (c) 2010, Carl Burch. License information is located in the
* com.cburch.logisim.Main source code and at www.cburch.com/logisim/. */
package com.cburch.logisim.gui.appear;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import javax.swing.JViewport;
import javax.swing.Popup;
import javax.swing.PopupFactory;
import com.cburch.draw.canvas.SelectionEvent;
import com.cburch.draw.canvas.SelectionListener;
import com.cburch.draw.model.CanvasObject;
import com.cburch.logisim.circuit.CircuitState;
import com.cburch.logisim.circuit.appear.AppearancePort;
import com.cburch.logisim.data.Location;
import com.cburch.logisim.gui.generic.CanvasPane;
import com.cburch.logisim.instance.Instance;
class LayoutPopupManager implements SelectionListener, MouseListener, MouseMotionListener {
private CanvasPane canvasPane;
private AppearanceCanvas canvas;
private Popup curPopup;
private long curPopupTime;
private Location dragStart;
public LayoutPopupManager(CanvasPane canvasPane, AppearanceCanvas canvas) {
this.canvasPane = canvasPane;
this.canvas = canvas;
this.curPopup = null;
this.dragStart = null;
canvas.getSelection().addSelectionListener(this);
canvas.addMouseListener(this);
canvas.addMouseMotionListener(this);
}
public void hideCurrentPopup() {
Popup cur = curPopup;
if (cur != null) {
curPopup = null;
dragStart = null;
cur.hide();
}
}
@Override
public void selectionChanged(SelectionEvent e) {
int act = e.getAction();
if (act == SelectionEvent.ACTION_ADDED) {
Set<AppearancePort> ports = shouldShowPopup(e.getAffected());
if (ports == null) {
hideCurrentPopup();
} else {
showPopup(ports);
}
}
}
private Set<AppearancePort> shouldShowPopup(Collection<CanvasObject> add) {
boolean found = false;
for (CanvasObject o : add) {
if (o instanceof AppearancePort) {
found = true;
break;
}
}
if (found) {
Set<AppearancePort> ports = getSelectedPorts();
if (!ports.isEmpty() && isPortUnselected(ports)) {
return ports;
}
}
return null;
}
// returns all the ports in the current selection
private Set<AppearancePort> getSelectedPorts() {
HashSet<AppearancePort> ports = new HashSet<AppearancePort>();
for (CanvasObject o : canvas.getSelection().getSelected()) {
if (o instanceof AppearancePort) {
ports.add((AppearancePort) o);
}
}
return ports;
}
// returns true if the canvas contains any port not in the given set
private boolean isPortUnselected(Set<AppearancePort> selected) {
for (CanvasObject o : canvas.getModel().getObjectsFromBottom()) {
if (o instanceof AppearancePort) {
if (!selected.contains(o)) {
return true;
}
}
}
return false;
}
private void showPopup(Set<AppearancePort> portObjects) {
dragStart = null;
CircuitState circuitState = canvas.getCircuitState();
if (circuitState == null) {
return;
}
ArrayList<Instance> ports = new ArrayList<Instance>(portObjects.size());
for (AppearancePort portObject : portObjects) {
ports.add(portObject.getPin());
}
hideCurrentPopup();
LayoutThumbnail layout = new LayoutThumbnail();
layout.setCircuit(circuitState, ports);
JViewport owner = canvasPane.getViewport();
Point ownerLoc = owner.getLocationOnScreen();
Dimension ownerDim = owner.getSize();
Dimension layoutDim = layout.getPreferredSize();
int x = ownerLoc.x + Math.max(0, ownerDim.width - layoutDim.width - 5);
int y = ownerLoc.y + Math.max(0, ownerDim.height - layoutDim.height - 5);
PopupFactory factory = PopupFactory.getSharedInstance();
Popup popup = factory.getPopup(canvasPane.getViewport(), layout, x, y);
popup.show();
curPopup = popup;
curPopupTime = System.currentTimeMillis();
}
@Override
public void mouseClicked(MouseEvent e) { }
@Override
public void mouseEntered(MouseEvent e) {
hideCurrentPopup();
}
@Override
public void mouseExited(MouseEvent e) {
long sincePopup = System.currentTimeMillis() - curPopupTime;
if (sincePopup > 50) {
hideCurrentPopup();
}
}
@Override
public void mousePressed(MouseEvent e) {
long sincePopup = System.currentTimeMillis() - curPopupTime;
if (sincePopup > 50) {
hideCurrentPopup();
}
dragStart = Location.create(e.getX(), e.getY());
}
@Override
public void mouseReleased(MouseEvent e) { }
@Override
public void mouseDragged(MouseEvent e) {
Location start = dragStart;
if (start != null && start.manhattanDistanceTo(e.getX(), e.getY()) > 4) {
hideCurrentPopup();
}
}
@Override
public void mouseMoved(MouseEvent arg0) { }
}