/*
 *  RapidMiner
 *
 *  Copyright (C) 2001-2011 by Rapid-I and the contributors
 *
 *  Complete list of developers available at our web site:
 *
 *       http://rapid-i.com
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see http://www.gnu.org/licenses/.
 */
package com.rapidminer.gui.operatortree;

import java.awt.Component;
import java.awt.Point;
import java.util.List;

import javax.swing.JTree;
import javax.swing.ToolTipManager;
import javax.swing.tree.TreePath;
import javax.swing.tree.TreeSelectionModel;

import com.rapidminer.Process;
import com.rapidminer.gui.tools.components.ToolTipWindow;
import com.rapidminer.gui.tools.components.ToolTipWindow.TipProvider;
import com.rapidminer.operator.ExecutionUnit;
import com.rapidminer.operator.Operator;
import com.rapidminer.operator.ProcessSetupError;

/**
 * This is an view on a given process. In contrast to the {@link OperatorTree}, this
 * is just a view that does neither allow editing of the process nor interacts with the
 * current RapidMiner state. So this can be used on processes different than the currently
 * opened one.
 * 
 * @author Sebastian Land
 */
public class ProcessTree extends JTree {
    private static final long serialVersionUID = -1015256958117451381L;


    public ProcessTree(Process process) {
        setModel(new ProcessTreeModel(process.getRootOperator()));
        setEditable(false);
        setCellRenderer(new OperatorTreeCellRenderer());
        setCellEditor(new OperatorTreeCellEditor(this));
        setShowsRootHandles(true);

        ToolTipManager.sharedInstance().registerComponent(this);

        // forces the tree to ask the nodes for the correct row heights
        // must also be invoked after LaF changes...
        setRowHeight(0);

        getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);

        new ToolTipWindow(new TipProvider() {
            @Override
            public String getTip(Object o) {
                Operator op;
                if (o instanceof Operator) {
                    op = (Operator) o;
                } else if (o instanceof ExecutionUnit) {
                    op = ((ExecutionUnit)o).getEnclosingOperator();
                } else {
                    return null;
                }
                StringBuilder b = new StringBuilder();
                b.append("<h3>").append(op.getOperatorDescription().getName()).append("</h3><p>");
                b.append(op.getOperatorDescription().getLongDescriptionHTML()).append("</p>");

                List<ProcessSetupError> errorList = op.getErrorList();
                if (!errorList.isEmpty()) {
                    b.append("<h4>Errors:</h4><ul>");
                    for (ProcessSetupError error : errorList) {
                        b.append("<li>").append(error.getMessage()).append("</li>");
                    }
                    b.append("</ul>");
                }
                return b.toString();
            }

            @Override
            public Object getIdUnder(Point point) {
                TreePath path = getPathForLocation((int)point.getX(), (int)point.getY());
                if (path != null) {
                    return path.getLastPathComponent();
                } else {
                    return null;
                }
            }

            @Override
            public Component getCustomComponent(Object id) { return null; }
        }, this);
    }
}