[英]How can i clean and organize up my View (MVC) better
所以我使用Observer / Observable方法掌握了java中的基本MVC模式。 現在為了保持它的清潔和可讀性,我想在我繼續討論如何很好地組織我的視圖之前有一些指示,因為這是我的課程最充滿的地方。 我們在學校被告知要保持每個類的文件大小低於20kb以保持可讀性,以后更容易維護。
這是我的觀點:
package view;
import model.*;
import helper.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Observable;
import java.util.Observer;
import net.miginfocom.swing.MigLayout;
public class View extends JFrame implements Observer
{
private Model model;
private JPanel left = new JPanel(new MigLayout());
private JPanel center = new JPanel(new MigLayout());
private JPanel right = new JPanel(new MigLayout());
private void setConstraints()
{
this.left.setMinimumSize(new Dimension(252, 540));
this.left.setMaximumSize(new Dimension(252, 37500));
this.center.setMinimumSize(new Dimension(298, 540));
this.right.setMinimumSize(new Dimension(250, 540));
this.right.setMaximumSize(new Dimension(250, 37500));
}
//Left panel contents
private Towers box = new Towers();
private Modules tree = new Modules();
private JPanel setupLeft()
{
this.left.add(this.box, "growx, pushx, wrap");
this.left.add(new JScrollPane(this.tree), "grow, push");
return this.left;
}
//Center panel contents
private Browser browser = new Browser();
private JPanel setupCenter()
{
this.center.add(new JScrollPane(this.browser), "grow, push");
return this.center;
}
//Right panel contents
private JLabel tower = new JLabel("No tower selected.");
private JLabel cap = new JLabel("Capacitor");
private JLabel cpu = new JLabel("CPU");
private JLabel shield = new JLabel("0");
private JLabel armor = new JLabel("0");
private JLabel em = new JLabel("0.0");
private JLabel th = new JLabel("0.0");
private JLabel kn = new JLabel("0.0");
private JLabel ex = new JLabel("0.0");
private JPanel setupRight()
{
this.right.add(this.tower, "span, wrap");
this.right.add(this.cap, "span, wrap");
this.right.add(this.cpu, "span, wrap");
this.right.add(this.shield, "span, wrap");
this.right.add(this.armor, "span, wrap");
this.right.add(this.em, "span, wrap");
this.right.add(this.th, "span, wrap");
this.right.add(this.kn, "span, wrap");
this.right.add(this.ex, "span, wrap");
return this.right;
}
public View(Model ui_model)
{
model = ui_model;
this.setTitle("MVC Experiment 6");
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setExtendedState(JFrame.MAXIMIZED_BOTH);
this.setMinimumSize(new Dimension(800, 600));
this.setLayout(new MigLayout());
this.setConstraints();
this.add(this.setupLeft(), "dock west");
this.add(this.setupCenter(), "dock center");
this.add(this.setupRight(), "dock east");
}
//Left panel contents - Listeners and methods for addressing JComponents
public void xTowersBrowser(ActionListener event)
{
this.box.addActionListener(event);
}
public void xModulesBrowser(MouseListener event)
{
this.tree.addMouseListener(event);
}
public Towers getTowersBrowser()
{
return this.box;
}
public Modules getModulesBrowser()
{
return this.tree;
}
//Left panel - END
//Center panel - components :: listeners and methods
public void xBrowser(MouseListener event)
{
this.browser.addMouseListener(event);
}
public Browser getBrowser()
{
return this.browser;
}
//Center panel - END
public void update(Observable o, Object arg)
{
}
}
關於在新類中分離什么或如何最小化代碼的任何建議都是有幫助的。 這只是我的主要View類的一個缺失,仍然有很多JComponents丟失,所以它會變得更加凌亂。
我借此機會展示我理想的MVC創意。
組件之間的連接可以受益於EventHandler
類的簡潔, http://docs.oracle.com/javase/6/docs/api/java/beans/EventHandler.html 。
讓我們將GUI限制為java swing。
為了集成MVC,有一個模型,可能由子模型組成。 人們可以擁有一個抽象的視圖類,可能由子視圖組成。 這個抽象視圖類是所有swing組件/子視圖的工廠,由控制器注入模型和綁定。
在GUI構建器中,可以添加JTextField a
作為自定義創建代碼view.a.create()
。 在initComponents之后,可以調用view.checkRequiredCreated()
,這可能會在缺少的創建上引發一個信息性異常。
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