MonthView.java

package calendar;


import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Calendar;
import java.util.Locale;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.SwingConstants;
import javax.swing.border.EmptyBorder;
import javax.swing.border.MatteBorder;

/**
 *
 * @author Callum Eves
 */
@SuppressWarnings("serial")
public class MonthView extends JPanel implements ActionListener{

    public static final int DAYS_IN_A_WEEK = 7;
    public static final int WEEKS_IN_A_MONTH = 6;
    
    public static final int TOP_PADDING = 0;
    public static final int MIDDLE_PADDING = 2;
    
    private JPanel m_top_panel;
    private JPanel m_middle_panel;
    private JPanel m_bottom_panel;
    private int m_month;
    private int m_year;
    
    /*
    * buttons to be displayed on the middle pane
    */
    private JLabel m_date_label;
    private JButton m_next_button;
    private JButton m_prev_button;
    private ActionListener CalListener;
    
    
    /*
    * method to create MonthView
    */
    public MonthView(ActionListener CalListener) {
        m_month = Data.GetCurrentMonth();
        m_year = Data.GetCurrentYear();
        
        /*
        * layout, orientation and colour of the views and the panes within
        */
        setLayout(new GridBagLayout());
        GridBagConstraints c = new GridBagConstraints();
        c.fill = GridBagConstraints.HORIZONTAL;
            c.weightx = 1;
            c.weighty = 0;
            c.gridx = 0;
            c.gridy = 0;
        
        m_top_panel = new JPanel(new BorderLayout());
        m_top_panel.setBackground(Calindrom.brown);
        m_middle_panel = new JPanel(new GridLayout(
        		1, MonthView.DAYS_IN_A_WEEK));
                
        m_middle_panel.setBackground(Calindrom.red);
        m_middle_panel.setForeground(Calindrom.dirty_white);
        m_bottom_panel = new JPanel(new GridLayout(MonthView.WEEKS_IN_A_MONTH, 
        		MonthView.DAYS_IN_A_WEEK));
                
        m_bottom_panel.setBackground(Calindrom.dirty_white);
        
        m_top_panel.setBorder(new MatteBorder(0, 0, 1, 0, Color.gray));
        m_middle_panel.setBorder(new MatteBorder(2, 0, 2, 0, Color.black));
        m_bottom_panel.setBorder(new MatteBorder(1, 0, 0, 0, Color.gray));
        
        m_prev_button = new JButton("prev");
        m_prev_button.setBackground(Calindrom.red);
        m_prev_button.setForeground(Calindrom.dirty_white);
        m_next_button = new JButton("next");
        m_next_button.setBackground(Calindrom.red);
        m_next_button.setForeground(Calindrom.dirty_white);
        m_date_label = new JLabel();
        m_date_label.setForeground(Calindrom.dirty_white);
        m_date_label.setHorizontalAlignment(SwingConstants.CENTER);
        
        /*
        * listeners for buttons waiting to be clicked
        */
        m_prev_button.addActionListener(this);
        m_next_button.addActionListener(this);
        
        /*
        * Orientation of panels displayed
        */
        m_top_panel.add(m_prev_button, BorderLayout.WEST);
        m_top_panel.add(m_next_button, BorderLayout.EAST);
        m_top_panel.add(m_date_label, BorderLayout.CENTER);
        
        c.ipady = MonthView.TOP_PADDING;
        add(m_top_panel, c);
        c.ipady = MonthView.MIDDLE_PADDING;
        c.gridy++;
        add(m_middle_panel, c);
        c.ipady = 0;
        c.weighty = 1;
        c.gridy++;
        c.fill = GridBagConstraints.BOTH;
        add(m_bottom_panel, c);
        
        this.CalListener = CalListener;
        RenderMV();
    }
    
    /*
    * visualising the view
    */
    public void RenderMV() {
        /*
        * remove components
        */
        m_middle_panel.removeAll();
        m_bottom_panel.removeAll();
        
        /*
        * setting the date
        */
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.DAY_OF_MONTH, 1);
        cal.set(Calendar.MONTH, m_month);
        cal.set(Calendar.YEAR, m_year);
        
        /*
        * set month and year in the label
        */
        m_date_label.setText(cal.getDisplayName(Calendar.MONTH, Calendar.LONG,
        		new Locale(Data.GetSettings().Get("locale")))+" "+m_year);
        
        /*
        * find the first monday
        */
        while(cal.get(Calendar.DAY_OF_WEEK) != Calendar.MONDAY) {
            cal.add(Calendar.DAY_OF_MONTH, -1);
        }
        
        /*
        * putting the panels in bottom_panel and days in middle_panel
        */
        for(int i = 0; i < MonthView.WEEKS_IN_A_MONTH; i++) {
            for(int j = 0; j < MonthView.DAYS_IN_A_WEEK; j++) {
                if(i == 0) {
                	
                	JLabel lbl = new JLabel(cal.getDisplayName(
                    		Calendar.DAY_OF_WEEK, Calendar.SHORT, 
                    		new Locale(Data.GetSettings().Get("locale"))));
                	lbl.setForeground(Calindrom.dirty_white);
                    m_middle_panel.add(lbl);
                }
                JScrollPane spane = new JScrollPane(new DayPanel(cal, m_month, 
                		m_year, CalListener));
                spane.setBorder(new EmptyBorder(0, 0, 0, 0));
                m_bottom_panel.add(spane);
                cal.add(Calendar.DAY_OF_MONTH, 1);
            }
        }
        
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        if(e.getSource() == m_prev_button) {
            m_month--;
            if(m_month < 0) {
                m_month += 12;
                m_year--;
            }
            RenderMV();
        }
        else if(e.getSource() == m_next_button) {
            m_month++;
            if(m_month > 11) {
                m_month -= 12;
                m_year++;
            }
            RenderMV();
        }
    }
    
     /*
     * Test to create a new event in the MonthView class
     */
     
     /*public static void main (String[] args) throws Exception{
         Data.Init();
        //makes new frame for month view
         JFrame test = new JFrame();
         Calendar cal = Calendar.getInstance();
         cal.add(cal.DAY_OF_MONTH, 1);
         
         // add a test event to month view
         Data.AddEvent("NEW EVENT", Calendar.getInstance(), cal,
         "Test", 2);
         
         //Make a new frame
         MonthView testM = new MonthView(cal, 2012);
         test.getContentPane().add(testM);
         test.pack();
         test.setVisible(true);
    }
    */
    
}