/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package day1;

/**
 *
 * @author levenick
 */
public class Day1Frame extends javax.swing.JFrame {

    private final int BAD_INPUT = -1;

    /**
     * Creates new form Day1Frame
     */
    public Day1Frame() {
        initComponents();
        setTitle("Day 1!");
        setSize(500, 500);
        prepareForInput();
        setVisible(true);
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        inTF = new javax.swing.JTextField();
        jScrollPane1 = new javax.swing.JScrollPane();
        theTA = new javax.swing.JTextArea();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        getContentPane().setLayout(null);

        inTF.setText("jTextField1");
        inTF.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                inTFActionPerformed(evt);
            }
        });
        getContentPane().add(inTF);
        inTF.setBounds(313, 58, 80, 20);

        theTA.setColumns(20);
        theTA.setRows(5);
        jScrollPane1.setViewportView(theTA);

        getContentPane().add(jScrollPane1);
        jScrollPane1.setBounds(0, 0, 243, 300);

        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void inTFActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_inTFActionPerformed
        String input = inTF.getText();
        System.out.println("input = " + input);
        int n = getMeGoodInput(input);
        if (n != BAD_INPUT) {
            doStuff(n);
        }
        prepareForInput();
    }//GEN-LAST:event_inTFActionPerformed

    void prepareForInput() {
        inTF.selectAll();
        inTF.requestFocus();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(Day1Frame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Day1Frame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Day1Frame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Day1Frame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Day1Frame().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JTextField inTF;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextArea theTA;
    // End of variables declaration//GEN-END:variables

    private void doStuff(int n) {
        int[] list = new int[n];
        for (int i = 1; i <= n; i++) {
            list[i - 1] = i;
        }
        display(list);
    }

    private void display(int[] list) {
        for (int next : list) {
            theTA.append("" + next + "\n");
        }
    }

    private int getMeGoodInput(String input) {
        int returnMe = BAD_INPUT;

        try {
            returnMe = Integer.parseInt(input);
        } catch (Exception e) {
            System.out.println("hey! type a number!");
            return returnMe;
        }
        return returnMe;
    }
}