/*
 [The "BSD licence"]
 Copyright (c) 2009 Shaoting Cai
 All rights reserved.

 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
 are met:
 1. Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
 2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.
 3. The name of the author may not be used to endorse or promote products
    derived from this software without specific prior written permission.

 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

package org.antlr.gunit.swingui;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.JLabel;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTree;
import javax.swing.event.TreeModelListener;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreeCellRenderer;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreePath;
import org.antlr.gunit.swingui.ImageFactory;
import org.antlr.gunit.swingui.model.*;

/**
 *
 * @author scai
 */
public class RunnerController implements IController {

    /* MODEL */
    //private TestSuite testSuite;

    /* VIEW */
    private RunnerView view = new RunnerView();
    public class RunnerView extends JPanel {
        
        private JTextArea textArea = new JTextArea();

        private JTree tree = new JTree();

        private JScrollPane scroll = new JScrollPane(tree,
                JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);

        public void initComponents() {
            //textArea.setOpaque(false);
            tree.setOpaque(false);
            scroll.setBorder(BorderFactory.createLineBorder(Color.LIGHT_GRAY));
            scroll.setOpaque(false);
            this.setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
            this.add(scroll);
            this.setBorder(BorderFactory.createEmptyBorder());
            this.setOpaque(false);
        }

    };

    public RunnerController() {
    }

    public Object getModel() {
        return null;
    }

    public Component getView() {
        return view;
    }

    public void update() {
        view.initComponents();
    }

    public void OnShowSuiteResult(TestSuite suite) {
        update();
        view.tree.setModel(new RunnerTreeModel(suite));
        view.tree.setCellRenderer(new RunnerTreeRenderer());
    }

    public void OnShowRuleResult(Rule rule) {
        update();
        
        
        /*
        StringBuffer result = new StringBuffer();

        result.append("Testing result for rule: " + rule.getName());
        result.append("\n--------------------\n\n");

        for(TestCase testCase: rule.getTestCases()){
            result.append(testCase.isPass() ? "PASS" : "FAIL");
            result.append("\n");
        }
        result.append("\n--------------------\n");
        view.textArea.setText(result.toString());
                  */
    }


    private class TestSuiteTreeNode extends DefaultMutableTreeNode {

        private TestSuite data ;

        public TestSuiteTreeNode(TestSuite suite) {
            super(suite.getGrammarName());
            for(int i=0; i<suite.getRuleCount(); ++i) {
                final Rule rule = suite.getRule(i);
                if(rule.getNotEmpty()) this.add(new TestGroupTreeNode(rule));
            }
            data = suite;
        }

        @Override
        public String toString() {
            return String.format("%s (%d test groups)",
                    data.getGrammarName(),
                    this.getChildCount());
        }

    } ;

    private class TestGroupTreeNode extends DefaultMutableTreeNode {

        private Rule data;
        private boolean hasFail = false;

        private TestGroupTreeNode(Rule rule) {
            super(rule.getName());
            for(TestCase tc: rule.getTestCases()) {
                this.add(new TestCaseTreeNode(tc));
            }

            data = rule;
         }

        @Override
        public String toString() {
            int iPass = 0;
            int iFail = 0;
            for(TestCase tc: data.getTestCases()) {
                if(tc.isPass())
                    ++iPass;
                else
                    ++iFail;
            }

            hasFail = iFail > 0;

            return String.format("%s (pass %d, fail %d)",
                data.getName(), iPass, iFail);
        }
    } ;

    private class TestCaseTreeNode extends DefaultMutableTreeNode {

        private TestCase data;

        private TestCaseTreeNode(TestCase tc) {
            super(tc.toString());
            data = tc;
        }
    } ;

    private class RunnerTreeModel extends DefaultTreeModel {

        public RunnerTreeModel(TestSuite testSuite) {
            super(new TestSuiteTreeNode(testSuite));
        }
    }

    private class RunnerTreeRenderer implements TreeCellRenderer {

        public Component getTreeCellRendererComponent(JTree tree, Object value,
                boolean selected, boolean expanded, boolean leaf, int row,
                boolean hasFocus) {

            JLabel label = new JLabel();

            if(value instanceof TestSuiteTreeNode) {

                label.setText(value.toString());
                label.setIcon(ImageFactory.getSingleton().TESTSUITE);

            } else if(value instanceof TestGroupTreeNode) {

                TestGroupTreeNode node = (TestGroupTreeNode) value;
                label.setText(value.toString());
                label.setIcon( node.hasFail ? 
                    ImageFactory.getSingleton().TESTGROUPX :
                    ImageFactory.getSingleton().TESTGROUP);

            } else if(value instanceof TestCaseTreeNode) {

                TestCaseTreeNode node = (TestCaseTreeNode) value;
                label.setIcon( (node.data.isPass())?
                    ImageFactory.getSingleton().RUN_PASS :
                    ImageFactory.getSingleton().RUN_FAIL);
                label.setText(value.toString());

            } else {
                throw new IllegalArgumentException(
                    "Invalide tree node type + " + value.getClass().getName());
            }

            return label;
            
        }
        
    }

}