quizwizard.java

eclipse平台的CDT项目3.0版本的源代码

package cdt.projects.tree.wizards.quiz;

import cdt.projects.Project;
import cdt.projects.tree.nodes.Hold;
import cdt.projects.tree.nodes.Node;
import cdt.projects.tree.nodes.Wizard;
import cdt.wizard.WizardFrame;

import javax.swing.*;
import javax.swing.text.Position;
import javax.swing.tree.TreePath;
import java.util.Enumeration;
import java.awt.*;

/**
 * Initiates a wizard to create a quiz in a project.
 */
public class QuizWizard extends WizardFrame {
    
    /** The JFrame acting as the parent to this wizard. */
    private JFrame parent;

    /** The Node representing the 'Quiz/Questions' folder. */
    private Node questionsFolder;
    /** The Node representing the 'Quiz/Answers' folder. */
    private Node answersFolder;

    /**
     * Creates the quiz wizard.
     *
     * @param parent The parent JFrame, in this case typically an instance of
     *      {@link cdt.Frame1 Frame1}.
     */
    public QuizWizard(JFrame parent) {
        super(parent);

        this.parent = parent;
        this.questionsFolder = null;
        this.answersFolder = null;

        JTree projectTree = Project.currentProject.getTree();

        // Finds the 'Quiz' folder in the ProjectTree
        TreePath treePath = projectTree.getNextMatch("Quiz", 0, Position.Bias.Forward);
        Node quizFolder = null;
        if(null != treePath) {
            quizFolder = (Node)treePath.getLastPathComponent();
        } else {
            quizFolder = new Hold("Quiz");
            quizFolder.setFile(Node.foldername(quizFolder.getName()));
            Hold rootNode = (Hold)projectTree.getPathForRow(0).getLastPathComponent();
            rootNode.addNodeInto(quizFolder);
        }

        // Finds the 'Create a quiz' node and removes it if it finds it
        treePath = projectTree.getNextMatch("Create a quiz", 0, Position.Bias.Forward);
        if(null != treePath) {
            Node n = (Node)treePath.getLastPathComponent();
            if(n instanceof Wizard) {
                n.removeNode();
            }
        }


        // Finds the 'Quiz/Questions' folder, or creates it if it cannot be found
        Enumeration enum = quizFolder.children();
        while(enum.hasMoreElements()) {
            Node temp = (Node)enum.nextElement();
            if(temp.getName().equals("Questions")) {
                this.questionsFolder = temp;
                break;
            }
        }
        if(null == questionsFolder) {
            this.questionsFolder = new Hold("Questions");
            this.questionsFolder.setFile(Node.foldername(this.questionsFolder.getName()));
            quizFolder.addNodeInto(this.questionsFolder);
            projectTree.updateUI();
        }

        // Finds the 'Quiz/Answers' folder, or creates it if it cannot be found
        enum = quizFolder.children();
        while(enum.hasMoreElements()) {
            Node temp = (Node)enum.nextElement();
            if(temp.getName().equals("Answers") && temp instanceof Hold) {
                this.answersFolder = temp;
                break;
            }
        }
        if(null == this.answersFolder) {
            this.answersFolder = new Hold("Answers");
            this.answersFolder.setFile(Node.foldername(this.answersFolder.getName()));
            quizFolder.addNodeInto(this.answersFolder);
        }

        // Adds a wizard node into the quiz folder
        enum = quizFolder.children();
        boolean foundWizard = false;
        while(enum.hasMoreElements()) {
            Node temp = (Node)enum.nextElement();
            if(temp instanceof Wizard && temp.getName().equals("Modify quiz")) {
                foundWizard = true;
                break;
            }
        }
        if(false == foundWizard) {
            Wizard wiz = new Wizard();
            wiz.setWizardType(Wizard.QUIZ_WIZARD);
            wiz.setName("Modify quiz");
            quizFolder.addNodeInto(wiz);
        }

        projectTree.updateUI();

        putData("oldQuestionsFolder", this.questionsFolder);
        putData("oldAnswersFolder", this.answersFolder);

        init();
    }

    /**
     * Sets up the layout of this page.
     */
    public void customize() {
        showPreviousButton(false);
        showFinishButton(false);

        setTitle("Quiz Wizard");

        JPanel panel = new JPanel(new BorderLayout());
        panel.add(new JLabel("This wizard creates a new Quiz, and will overwrite any old quiz that you may have"),
                BorderLayout.NORTH);
        panel.add(new JLabel(" "), BorderLayout.CENTER);
        panel.add(new JLabel("Please hit the 'next' button to begin the quiz creation process."),
                BorderLayout.SOUTH);
        centerPanel.add(panel);
    }

    
    /**
     * Moves to the next page in the wizard.
     */
    public void nextAction() {
        pushFrame(this);
        setVisible(false);

        // Creates the folder to store the new quiz in
        data.put("newQuestionsFolder", new Hold("Questions"));
        data.put("newAnswersFolder", new Hold("Answers"));
        Project.currentProject.getTree().firePageNeededEvent();

        // Creates the next page in the wizard
        new QuizWizard1(parent);
    }
}