/* Alloy Analyzer 4 -- Copyright (c) 2006-2009, Felix Chang
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify,
* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package edu.mit.csail.sdg.alloy4compiler.ast;
import java.awt.BorderLayout;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.border.EmptyBorder;
import edu.mit.csail.sdg.alloy4.ConstList;
import edu.mit.csail.sdg.alloy4.Listener;
import edu.mit.csail.sdg.alloy4.OurTree;
import edu.mit.csail.sdg.alloy4.Pos;
import edu.mit.csail.sdg.alloy4.Util;
/** This abstract class represents a node that can be browsed in the graphical parse tree viewer. */
public abstract class Browsable {
/** Returns a Pos object representing the position of this Expr. */
public Pos pos() { return Pos.UNKNOWN; }
/** Returns a Pos object representing the entire span of this Expr and all its subexpressions. */
public Pos span() { return pos(); }
/** Returns the description (as HTML) to show for this node. */
public abstract String getHTML();
/** Returns a list of subnodes for this node. */
public abstract List<? extends Browsable> getSubnodes();
/** Construct a Browsable node with the given HTML description and the given single subnode. */
public static final Browsable make(final Pos pos, final Pos span, final String html, Browsable subnode) {
return make(pos, span, html, Util.asList(subnode));
}
/** Construct a Browsable node with the given HTML description and the given single subnode. */
public static final Browsable make(final String html, Browsable subnode) {
return make(Pos.UNKNOWN, Pos.UNKNOWN, html, Util.asList(subnode));
}
/** Construct a Browsable node with the given HTML description and the given 0 or more subnodes. */
public static final Browsable make(final String html, final List<? extends Browsable> subnodes) {
return make(Pos.UNKNOWN, Pos.UNKNOWN, html, subnodes);
}
/** Construct a Browsable node with the given HTML description and the given 0 or more subnodes. */
public static final Browsable make(final Pos pos, final Pos span, final String html, final List<? extends Browsable> subnodes) {
final ConstList<? extends Browsable> constlist = ConstList.make(subnodes);
return new Browsable() {
@Override public Pos pos() { return pos; }
@Override public Pos span() { return span; }
@Override public String getHTML() { return html; }
@Override public List<? extends Browsable> getSubnodes() { return constlist; }
};
}
/** Display this node and its subnodes as a tree; if listener!=null, it will receive OurTree.Event.SELECT events when nodes are selected. */
public final JFrame showAsTree(Listener listener) {
final OurTree tree = new OurTree(12) {
private static final long serialVersionUID = 0;
private final boolean onWindows = Util.onWindows();
{do_start();}
@Override public String convertValueToText(Object val, boolean selected, boolean expanded, boolean leaf, int row, boolean focus) {
String c = ">";
String x = (val instanceof Browsable) ? ((Browsable)val).getHTML() : Util.encode(String.valueOf(val));
if (onWindows) c = selected ? " style=\"color:#ffffff;\">" : " style=\"color:#000000;\">";
return "<html><span" + c + x + "</span></html>";
}
@Override public List<?> do_ask(Object parent) {
if (parent instanceof Browsable) return ((Browsable)parent).getSubnodes(); else return new ArrayList<Browsable>();
}
@Override public Object do_root() { return Browsable.this; }
};
tree.setBorder(new EmptyBorder(3, 3, 3, 3));
final JScrollPane scr = new JScrollPane(tree, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
scr.addFocusListener(new FocusListener() {
public void focusGained(FocusEvent e) { tree.requestFocusInWindow(); }
public void focusLost(FocusEvent e) { }
});
final JFrame x = new JFrame("Parse Tree");
x.setLayout(new BorderLayout());
x.add(scr, BorderLayout.CENTER);
x.pack();
x.setSize(500, 500);
x.setLocationRelativeTo(null);
x.setVisible(true);
if (listener!=null) tree.listeners.add(listener);
return x;
}
}