jxloginpanel.java

java实现浏览器等本地桌面的功能

        gridBagConstraints.gridx = 1;
        gridBagConstraints.gridy = 0;
        gridBagConstraints.gridwidth = 1;
        gridBagConstraints.anchor = GridBagConstraints.WEST;
        gridBagConstraints.fill = GridBagConstraints.HORIZONTAL;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.insets = new Insets(0, 0, 5, 0);
        loginPanel.add(namePanel, gridBagConstraints);

        gridBagConstraints = new GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 1;
        gridBagConstraints.anchor = GridBagConstraints.WEST;
        gridBagConstraints.insets = new Insets(0, 0, 11, 11);
        loginPanel.add(passwordLabel, gridBagConstraints);

        gridBagConstraints = new GridBagConstraints();
        gridBagConstraints.gridx = 1;
        gridBagConstraints.gridy = 1;
        gridBagConstraints.gridwidth = 1;
        gridBagConstraints.anchor = GridBagConstraints.WEST;
        gridBagConstraints.fill = GridBagConstraints.HORIZONTAL;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.insets = new Insets(0, 0, 11, 0);
        loginPanel.add(passwordField, gridBagConstraints);

        gridBagConstraints = new GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 2;
        gridBagConstraints.gridwidth = 2;
        gridBagConstraints.fill = GridBagConstraints.HORIZONTAL;
        gridBagConstraints.anchor = GridBagConstraints.WEST;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.insets = new Insets(0, 0, 0, 0);
        loginPanel.add(saveCB, gridBagConstraints);

        return loginPanel;
    }
    
	/**
	 * Listener class to implement saving of passwords and usernames.
	 * 
	 * 
	 */
	class SaveListener implements LoginListener {
		public void loginFailed(LoginEvent source) {
		}

		public void loginSucceeded(LoginEvent source) {
			if (getSaveMode() == SaveMode.PASSWORD || getSaveMode() == SaveMode.BOTH) {
				savePassword();
			} else if (getSaveMode() == SaveMode.USER_NAME) {
				userNameStore.addUserName(nameField.getText());
				userNameStore.saveUserNames();
			}
		}

		public void loginStarted(LoginEvent source) {
		}

		public void loginCanceled(LoginEvent source) {
		}
	}

	void savePassword() {
		if (passwordStore != null) {
			passwordStore.set(getUserName(),getLoginService().getServer(),getPassword());
		}
	}

	/**
	 * @return Returns the saveMode.
	 */
	public SaveMode getSaveMode() {
		return saveMode;
	}
    
    /**
     * The save mode indicates whether the "save" password is checked by default. This method
     * makes no difference if the passwordStore is null.
     *
	 * @param saveMode The saveMode to set either SAVE_NONE, SAVE_PASSWORD or SAVE_USERNAME
	 */
	public void setSaveMode(SaveMode saveMode) {
        namePanel.removeAll();
		this.saveMode = saveMode;
        switch (saveMode) {
            case USER_NAME:
            case PASSWORD:
            case BOTH:
                namePanel.add(nameCombo, BorderLayout.CENTER);
                saveCB.setVisible(!(passwordStore instanceof NullPasswordStore));
                revalidate();
                break;
            default:
                namePanel.add(nameField, BorderLayout.CENTER);
                saveCB.setSelected(false);
                saveCB.setVisible(false);
                revalidate();
        }
	}

	/**
	 * Sets the <strong>LoginService</strong> for this panel.
	 *
	 * @param service service
	 */
	public void setLoginService(LoginService service) {
		loginService = service;
	}

	/**
	 * Gets the <strong>LoginService</strong> for this panel.
	 *
	 * @return service service
	 */
	public LoginService getLoginService() {
		return loginService;
	}

	/**
	 * Sets the <strong>PasswordStore</strong> for this panel.
	 *
	 * @param store PasswordStore
	 */
	public void setPasswordStore(PasswordStore store) {
		passwordStore = store;
	}

	/**
	 * Gets the <strong>PasswordStore</strong> for this panel.
	 *
	 * @return store PasswordStore
	 */
	public PasswordStore getPasswordStore() {
		return passwordStore;
	}

	/**
	 * Sets the <strong>User name</strong> for this panel.
	 *
	 * @param username User name
	 */
	public void setUserName(String username) {
        if(saveMode == SaveMode.NONE) {
            nameField.setText(username);
        } else {
            nameCombo.setSelectedItem(username);
        }
	}

	/**
	 * Gets the <strong>User name</strong> for this panel.
	 * @return the user name
	 */
	public String getUserName() {
        if(saveMode != SaveMode.NONE) {
            return (String)nameCombo.getSelectedItem();
        } else {
            return nameField.getText();
        }
	}

	/**
	 * Sets the <strong>Password</strong> for this panel.
	 *
	 * @param password Password
	 */
	public void setPassword(char[] password) {
		passwordField.setText(new String(password));
	}

	/**
	 * Gets the <strong>Password</strong> for this panel.
	 *
	 * @return password Password
	 */
	public char[] getPassword() {
		return passwordField.getPassword();
	}

    /**
     *
     */
    public void startLogin() {
        oldCursor = getCursor();
        try {
//            loginPanel.progressIndicator.setIndeterminate(true);
//            loginPanel.cancelLogin.setEnabled(true);
            setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
            String name = getUserName();
            char[] password = getPassword();
            loginService.startAuthentication(name, password, null);
            if (saveMode != SaveMode.NONE && !userNameStore.containsUserName(name)) {
                userNameStore.addUserName(name);
                userNameStore.saveUserNames();
            }
            if (saveCB.isSelected() && (saveMode == SaveMode.BOTH || saveMode == SaveMode.PASSWORD)) {
                passwordStore.set(name, loginService.getServer(), password);
            }
//            UserPermissions.getInstance().setRoles(service.getUserRoles());
        } catch(IOException ioerr) {
//            loginPanel.loginProgress.setText(ioerr.getMessage());
//            finishedLogin(false);
        } finally {
            setCursor(oldCursor);
        }
    }
    
    public void cancelLogin() {
        loginService.cancelAuthentication();
        setCursor(oldCursor);
    }
    
    /**
     * Simple login service that allows everybody to login. This is useful in demos and allows
     * us to avoid having to check for LoginService being null
     */
    private static final class NullLoginService extends LoginService {
        public boolean authenticate(String name, char[] password, String server) throws IOException {
            return true;
        }
    }
    
    /**
     * Simple PasswordStore that does not remember passwords
     */
    private static final class NullPasswordStore extends PasswordStore {
        private static final char[] EMPTY = new char[0];
        public boolean set(String username, String server, char[] password) {
            //null op
            return false;
        }
        public char[] get(String username, String server) {
            return EMPTY;
        }
    }
}