questioneditorpanel.java

自己写的轮询提问的小程序 新手刚学 多多指教 合乎哈

        jLabel2.setFont(new java.awt.Font("Tahoma", 0, 11));
        jLabel2.setText("Number of Answers");
        add(jLabel2);
        jLabel2.setBounds(270, 280, 110, 14);

    }//GEN-END:initComponents

    private void AnswerTextFieldFKeyReleased(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_AnswerTextFieldFKeyReleased
        currentQuestion.setAnswerF(AnswerTextFieldF.getText());
    }//GEN-LAST:event_AnswerTextFieldFKeyReleased

    private void AnswerTextFieldEKeyReleased(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_AnswerTextFieldEKeyReleased
        currentQuestion.setAnswerE(AnswerTextFieldE.getText());
    }//GEN-LAST:event_AnswerTextFieldEKeyReleased

    private void NumOfAnswersComboBoxActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_NumOfAnswersComboBoxActionPerformed
        Integer I = (Integer) NumOfAnswersComboBox.getSelectedItem();
        int i = I.intValue();
        currentQuestion.setNumOfAnswers(i);
        int j;
        
        AnswerTextFieldA.setEnabled(true);
        AnswerTextFieldB.setEnabled(true);
        AnswerTextFieldC.setEnabled(true);
        AnswerTextFieldD.setEnabled(true);
        AnswerTextFieldE.setEnabled(true);
        AnswerTextFieldF.setEnabled(true);
        
        if (NumOfAnswersComboBox.getSelectedIndex() <= 0) {
            AnswerTextFieldC.setEnabled(false);
            AnswerTextFieldC.setText("");
        }
        if (NumOfAnswersComboBox.getSelectedIndex() <= 1) {
            AnswerTextFieldD.setEnabled(false);
            AnswerTextFieldD.setText("");
        }
        if (NumOfAnswersComboBox.getSelectedIndex() <= 2) {
            AnswerTextFieldE.setEnabled(false);
            AnswerTextFieldE.setText("");
        }
        if (NumOfAnswersComboBox.getSelectedIndex() <= 3) {
            AnswerTextFieldF.setEnabled(false);
            AnswerTextFieldF.setText("");
        }
            
    }//GEN-LAST:event_NumOfAnswersComboBoxActionPerformed

    private void AnswerTextFieldDKeyReleased(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_AnswerTextFieldDKeyReleased
        currentQuestion.setAnswerD(AnswerTextFieldD.getText());
    }//GEN-LAST:event_AnswerTextFieldDKeyReleased

    private void AnswerTextFieldCKeyReleased(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_AnswerTextFieldCKeyReleased
        currentQuestion.setAnswerC(AnswerTextFieldC.getText());
    }//GEN-LAST:event_AnswerTextFieldCKeyReleased

    private void QuestionTimeoutComboBoxActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_QuestionTimeoutComboBoxActionPerformed
        Integer I = (Integer) QuestionTimeoutComboBox.getSelectedItem();
        currentQuestion.setTimeout(I.intValue());
    }//GEN-LAST:event_QuestionTimeoutComboBoxActionPerformed

    private void AnswerTextFieldBKeyReleased(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_AnswerTextFieldBKeyReleased
        currentQuestion.setAnswerB(AnswerTextFieldB.getText());     
    }//GEN-LAST:event_AnswerTextFieldBKeyReleased

    private void AnswerTextFieldAKeyReleased(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_AnswerTextFieldAKeyReleased
        currentQuestion.setAnswerA(AnswerTextFieldA.getText());
    }//GEN-LAST:event_AnswerTextFieldAKeyReleased

    private void QuestionTextAreaKeyReleased(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_QuestionTextAreaKeyReleased
        String s = QuestionTextArea.getText();
        char c;
        if (s.length() == 0) c = 'q';
        else c = s.charAt(s.length() -1);
        if (c == '\t') {
            QuestionTextArea.setText(s.substring(0, s.length() -1));
            QuestionTextArea.transferFocus();
        }
        currentQuestion.setQuestion(QuestionTextArea.getText());
    }//GEN-LAST:event_QuestionTextAreaKeyReleased

    private void QuestionComboBoxActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_QuestionComboBoxActionPerformed
        if (QuestionComboBox.getItemCount() < 1) return;
        
        currentQuestion = QuestionVector.getQuestionAt(QuestionComboBox.getSelectedIndex());
        restoreQuestion(QuestionComboBox.getSelectedIndex());
        
        adjustNavigationControls();
    }//GEN-LAST:event_QuestionComboBoxActionPerformed

    private void DeleteQuestionButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_DeleteQuestionButtonActionPerformed
        if (QuestionVector.size() == 1) return;
        int indx = QuestionComboBox.getSelectedIndex();

        QuestionVector.deleteQuestionAt(indx);

        if (indx <= QuestionComboBox.getItemCount() - 1) currentQuestion = QuestionVector.getQuestionAt(indx);
            else currentQuestion = QuestionVector.getQuestionAt(indx - 1);

    }//GEN-LAST:event_DeleteQuestionButtonActionPerformed

    private void NewQuestionButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_NewQuestionButtonActionPerformed
        newQuestion();
    }//GEN-LAST:event_NewQuestionButtonActionPerformed

    private void NextQuestionButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_NextQuestionButtonActionPerformed
        int indx = QuestionComboBox.getSelectedIndex();
        if (indx < QuestionVector.size() - 1) QuestionComboBox.setSelectedIndex(indx + 1);       
    }//GEN-LAST:event_NextQuestionButtonActionPerformed

    private void PreviousQuestionButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_PreviousQuestionButtonActionPerformed
        int indx = QuestionComboBox.getSelectedIndex();
        if (indx > 0) QuestionComboBox.setSelectedIndex(indx - 1);

        //        if (indx > 0) changeQuestion(indx, indx - 1);
    }//GEN-LAST:event_PreviousQuestionButtonActionPerformed
    
    private void adjustNavigationControls() {
        if (!Enabled) return;
        int indx = QuestionComboBox.getSelectedIndex();

        if (indx < 1) PreviousQuestionButton.setEnabled(false);
        else PreviousQuestionButton.setEnabled(true);
        if (indx + 1> QuestionVector.size() - 1) NextQuestionButton.setEnabled(false);        
        else NextQuestionButton.setEnabled(true);
    }
    
    public Question getQuestion() {
        int i = QuestionComboBox.getSelectedIndex();
        return QuestionVector.getQuestionAt(i);
    }
    
    public void setEnabled(boolean b) {
        Enabled = b;
        QuestionComboBox.setEnabled(b);
        QuestionTextArea.setEnabled(b);
        AnswerTextFieldA.setEnabled(b);
        AnswerTextFieldB.setEnabled(b);
        AnswerTextFieldC.setEnabled(b);
        AnswerTextFieldD.setEnabled(b);
        AnswerTextFieldE.setEnabled(b);
        AnswerTextFieldF.setEnabled(b);
        QuestionTimeoutComboBox.setEnabled(b);
        NumOfAnswersComboBox.setEnabled(b);
        NewQuestionButton.setEnabled(b);
        DeleteQuestionButton.setEnabled(b);
 
        if (b == false) {
            NextQuestionButton.setEnabled(b);
            PreviousQuestionButton.setEnabled(b);
        }
        else {
            adjustNavigationControls();
        }
        
        super.setEnabled(b);
    }
    
    private void newQuestion() {
        if (QuestionVector == null) return;
        
        Integer I = (Integer) NumOfAnswersComboBox.getSelectedItem();
        int i = I.intValue();
        
        Question q = new Question("", currentQuestion.getAnswerA(), currentQuestion.getAnswerB(), currentQuestion.getAnswerC(), currentQuestion.getAnswerD(), currentQuestion.getAnswerE(), currentQuestion.getAnswerF(), currentQuestion.getTimeout(), QuestionVector.size() + 1, currentQuestion.getNumOfAnswers());
        q.setNumOfAnswers(i);
        QuestionVector.addQuestion(q);
        
        QuestionComboBox.setSelectedIndex(QuestionComboBox.getItemCount() - 1);
        
        
        currentQuestion = QuestionVector.getQuestionAt(QuestionComboBox.getSelectedIndex()); 
    }
    
    public void nextQuestion() {
        int i = QuestionComboBox.getSelectedIndex();
        if (i < QuestionVector.size() - 1) QuestionComboBox.setSelectedIndex(i + 1);
        else newQuestion();
        
        adjustNavigationControls();
    }

    public void syncComboBoxes() {
        Vector v = QuestionVector.getQuestionListing();
        
        if (v.size() < 1) return;
        Question q;
        int i;
        int indx = QuestionComboBox.getSelectedIndex();
        lastQuestionComboBoxIndex = -1;
        
        if (indx == v.size()) indx--;

        if (indx < 0) indx = 0;
        
        QuestionComboBox.removeAllItems();
        for (i = 0; i < QuestionVector.size(); i++) {
            QuestionComboBox.addItem(v.elementAt(i));
        }

        if (indx >= QuestionVector.size()) indx = 0;
        QuestionComboBox.setSelectedIndex(indx);
        
        adjustNavigationControls();
    }
 
    private void restoreQuestion(int indx) {
        Question q;
        Integer I;
        
        q = QuestionVector.getQuestionAt(indx);
        
        QuestionTextArea.setText(q.getQuestion());
        AnswerTextFieldA.setText(q.getAnswerA());
        AnswerTextFieldB.setText(q.getAnswerB());
        AnswerTextFieldC.setText(q.getAnswerC());
        AnswerTextFieldD.setText(q.getAnswerD());
        AnswerTextFieldE.setText(q.getAnswerE());
        AnswerTextFieldF.setText(q.getAnswerF());
        
        QuestionTimeoutComboBox.setSelectedItem(new Integer(q.getTimeout()));        
        NumOfAnswersComboBox.setSelectedItem(new Integer(q.getNumOfAnswers()));        
        
        lastQuestionComboBoxIndex = indx;
        QuestionComboBox.setSelectedIndex(indx);
    }
   
    public void setJPQuestionVector(JPQuestionVector qv) {
        QuestionVector = qv;
        QuestionVector.addListener(this);
        
        if (QuestionComboBox.getItemCount() == 0) {
            QuestionVector.newQuestion();
            syncComboBoxes();
            currentQuestion = QuestionVector.getQuestionAt(0);
        }
        adjustNavigationControls();
        
    }
    
    public int getQuestionIndex() {
        return QuestionComboBox.getSelectedIndex();
    }
    

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JTextField AnswerTextFieldA;
    private javax.swing.JTextField AnswerTextFieldB;
    private javax.swing.JTextField AnswerTextFieldC;
    private javax.swing.JTextField AnswerTextFieldD;
    private javax.swing.JTextField AnswerTextFieldE;
    private javax.swing.JTextField AnswerTextFieldF;
    private javax.swing.JButton DeleteQuestionButton;
    private javax.swing.JButton NewQuestionButton;
    private javax.swing.JButton NextQuestionButton;
    private javax.swing.JComboBox NumOfAnswersComboBox;
    private javax.swing.JButton PreviousQuestionButton;
    private javax.swing.JComboBox QuestionComboBox;
    private javax.swing.JTextArea QuestionTextArea;
    private javax.swing.JComboBox QuestionTimeoutComboBox;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JLabel jLabel7;
    private javax.swing.JLabel jLabel8;
    private javax.swing.JLabel jLabel9;
    // End of variables declaration//GEN-END:variables

    private JPQuestionVector QuestionVector;
    private int lastQuestionComboBoxIndex = 0;
    private boolean Enabled = true;
    private Question currentQuestion;
}