itemui

Java Swing程序不像J2EE程序那样有框架有模式可遵，反倒显得很自由无所拘束，但如些一来反而显得程序代码杂乱无章，如果只是写个示例程序的话倒也无所谓，但随着代码的增多或过段时间在回首时就发现代码很不容易看懂，不以维护。我虽无大型Swing程序的经验，但平素喜爱用Swing写写工具程序以练练手，因此我以下是我的经验总结。下面以些图来表示

 
一个桌面级程序必然是以一个主界面展开的，在Swing中这个主界面是派生自JFrame的，其中有菜单、工具栏、状态栏、内容面板（contentPanel）和一些相应的按钮，这些界面元素即可以派生自某个类或调用Swing的现成类，但最后总要添加到界面中，而为了与用户交互，控件要和一个实现了Action接口的类绑定，因此在界面层中我分别实例化了ActionsManager和Functions对象，我专门写了一个ActionsManager类的用以管理程序中所有的Action接口的类，通过键值对集合把某个控件的动作与相应的控件绑定，当然你可能会觉得这很无聊，还不如在构造控件时直接将动作与之绑定就可以了，但这样做时很没有重复性，如果某个动作即要被按钮实现又要被菜单实现，还要被工具栏实现的话就要重复写三次代码，如果还要考虑其禁用与否就更麻烦了，因此我干脆将动作类统统封装在一个集合中统一调用，比如如下的代码

 

public class LoginActions {   
    private MainPanel mainPanel;   
    private LoginManager loginManager;   
    private Map<String,LoginAction> mapActions;   
       
    public LoginActions()   
    {   
        mapActions = new HashMap<String,LoginAction>();   
        new LoginAction("新建(N)","image/newfile.gif","image/tbnew.png",KeyEvent.VK_N,"ctrl N","new"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.newFile();   
            }   
        };   
        new LoginAction("打开(O)...","image/open.gif","image/tbopen.png",KeyEvent.VK_O,"ctrl O","open"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.openFromFile();   
            }   
        };   
        new LoginAction("保存(S)","image/save.gif","image/tbsave.png",KeyEvent.VK_S,"ctrl S","save"){   
            public void actionPerformed(ActionEvent e) {   
                if(loginManager.isModifyFlag())   
                    mainPanel.saveToFile(false);   
            }   
        };   
        new LoginAction("另存为(A)...",null,null,KeyEvent.VK_A,null,"saveas"){   
            public void actionPerformed(ActionEvent e) {   
                if(loginManager.isModifyFlag())   
                    mainPanel.saveToFile(true);   
            }   
        };   
        new LoginAction("导出(E)...",null,"image/tbexport.png",KeyEvent.VK_E,null,"export"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.exprotFile();   
            }   
        };   
        new LoginAction("退出(X)",null,"image/tbexit.png",KeyEvent.VK_X,"ctrl alt X","exit"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.ExitApplication();   
            }   
        };   
        new LoginAction("复制(C)","image/copy.gif",null,KeyEvent.VK_C,"ctrl C","copy"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.bottomPanel.editMenuCopy();   
            }   
        };   
        new LoginAction("粘贴(P)","image/paste.gif",null,KeyEvent.VK_P,"ctrl V","paste"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.bottomPanel.editMenuPaste();   
            }   
        };   
        new LoginAction("剪切(X)","image/cut.gif",null,KeyEvent.VK_X,"ctrl X","cut"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.bottomPanel.editMenuCut();   
            }   
        };   
        new LoginAction("清除输入(R)",null,null,KeyEvent.VK_R,null,"reinput"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.bottomPanel.resetInput();   
            }   
        };   
        new LoginAction("新增分类(A)",null,null,KeyEvent.VK_A,null,"addType"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.showTypeDlg(true);   
            }   
        };   
        new LoginAction("删除分类(D)",null,null,KeyEvent.VK_D,null,"delType"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.deleteType();   
            }   
        };   
        new LoginAction("修改分类(M)",null,null,KeyEvent.VK_M,null,"modifyType"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.showTypeDlg(false);   
            }   
        };   
        new LoginAction("新增记录(D)",null,null,KeyEvent.VK_D,null,"addLogin"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.bottomPanel.addLogin();   
            }   
        };   
        new LoginAction("删除记录(E)",null,null,KeyEvent.VK_E,null,"delLogin"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.bottomPanel.deleteLogin();   
            }   
        };   
        new LoginAction("修改记录(O)",null,null,KeyEvent.VK_O,null,"modifyLogin"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.bottomPanel.modifyLogin();   
            }   
        };   
        new LoginAction("查找(F)","image/tbfind.png",null,KeyEvent.VK_F,null,"findLogin"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.rightPanel.find();   
            }   
        };   
        new LoginAction("转至地址(L)",null,null,KeyEvent.VK_L,null,"goURL"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.bottomPanel.goUrl();   
            }   
        };   
        new LoginAction("刷新(U)","image/refresh.gif","image/tbudpate.png",KeyEvent.VK_U,null,"refresh"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.updatePanelUI();   
            }   
        };   
        new LoginAction("程序设置(S)...","image/setup.gif","image/tbOption.png",KeyEvent.VK_S,null,"setup"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.showSetupDlg();   
            }   
        };   
        new LoginAction("关于(A)...","image/about.gif","image/tbHelp.png",KeyEvent.VK_A,null,"about"){   
            public void actionPerformed(ActionEvent e) {   
                mainPanel.showAboutDlg();   
            }   
        };   
    }   
       
    public Action getAction(String command)   
    {   
        return mapActions.get(command);   
    }   
       
    public void setMainPanel(MainPanel mainPanel)   
    {   
        this.mainPanel = mainPanel;   
    }   
       
    public void setLoginManager(LoginManager loginManager)   
    {   
        this.loginManager = loginManager;   
    }   
       
    abstract class LoginAction extends AbstractAction{   
        public LoginAction(String name,String icon,String bigIcon,int memKey,String stroke,String command)   
        {   
            this.putValue(NAME, name);   
            if(icon!=null)   
                this.putValue(Action.SMALL_ICON,    
                        new ImageIcon(this.getClass().getClassLoader().getResource(icon)));   
            else  
                this.putValue(Action.SMALL_ICON,    
                        new ImageIcon(this.getClass().getClassLoader().getResource("image/mnuNullIcon.gif")));   
            if(bigIcon!=null)   
                this.putValue(Action.LARGE_ICON_KEY,    
                        new ImageIcon(this.getClass().getClassLoader().getResource(bigIcon)));   
            if(memKey!=0)   
                this.putValue(Action.MNEMONIC_KEY, memKey);   
            if(stroke!=null)   
                this.putValue(Action.ACCELERATOR_KEY, KeyStroke.getKeyStroke(stroke));   
            this.putValue("command", command);   
            mapActions.put(command, this);   
        }   
    }   
}   

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