Command.java
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上传日期:2022-06-15
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文件大小:7k
- /*
- * Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Sun designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Sun in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- */
- package com.sun.lwuit;
- import com.sun.lwuit.events.ActionEvent;
- import com.sun.lwuit.events.ActionListener;
- /**
- * The action placed on the soft buttons and in the Menu on devices, similar to the
- * MIDP command abstraction and Swing's Actions. Unlike the MIDP abstraction this class
- * can be derived to implement the right behavior
- *
- * @author Nir Shabi
- */
- public class Command implements ActionListener{
- private boolean disposesDialog = true;
- private Image icon;
- private String command;
-
- /**
- * Simplifies code dealing with commands allowing them to be used in switch statements
- * more easily
- */
- private int commandId;
-
- /**
- * Creates a new instance of Command
- *
- * @param command the string that will be placed on the Soft buttonsMenu
- */
- public Command(String command) {
- this.command = command;
- }
- /**
- * Creates a new instance of Command
- *
- * @param command the string that will be placed on the Soft buttonsMenu
- * @param icon the icon representing the command
- */
- public Command(String command, Image icon) {
- this.command = command;
- this.icon = icon;
- }
- /**
- * Creates a new instance of Command
- *
- * @param command the string that will be placed on the Soft buttonsMenu
- * @param id user defined ID for a command simplifying switch statement code
- * working with a command
- */
- public Command(String command, int id) {
- this.command = command;
- this.commandId = id;
- }
-
- /**
- * Creates a new instance of Command
- *
- * @param command the string that will be placed on the Soft buttonsMenu
- * @param icon the icon representing the command
- * @param id user defined ID for a command simplifying switch statement code
- * working with a command
- */
- public Command(String command, Image icon, int id) {
- this.command = command;
- this.commandId = id;
- this.icon = icon;
- }
-
- /**
- * Creates a new instance of Command
- *
- * @param command the string that will be placed on the Soft buttonsMenu
- * @param id user defined ID for a command simplifying switch statement code
- * working with a command
- * @param defaultAction Indicates that this action should occur by default
- * on fire action event
- * @deprecated this functionality is no longer supported use Form.setDefaultCommand() instead
- */
- public Command(String command, int id, boolean defaultAction) {
- this.command = command;
- this.commandId = id;
- }
- /**
- * Creates a new instance of Command
- *
- * @param command the string that will be placed on the Soft buttonsMenu
- * @param defaultAction Indicates that this action should occur by default
- * on fire action event
- * @deprecated this functionality is no longer supported use Form.setDefaultCommand() instead
- */
- public Command(String command, boolean defaultAction) {
- this.command = command;
- }
- /**
- * Return the command ID
- *
- * @return the command ID
- */
- public int getId() {
- return commandId;
- }
-
- /**
- * gets the Command Name
- *
- * @return the Command name
- */
- public String getCommandName() {
- return command;
- }
- void setCommandName(String command) {
- this.command = command;
- }
-
- /**
- * Returns the icon representing the command
- *
- * @return an icon representing the command
- */
- public Image getIcon() {
- return icon;
- }
-
- /**
- * Returns a string representation of the object
- *
- * @return Returns a string representation of the object
- */
- public String toString() {
- return command;
- }
-
- /**
- * compare two commands
- *
- * @param obj a Command Object to compare
- * @return true if the obj has the same command name
- */
- public boolean equals(Object obj) {
- if(!(obj instanceof Command)) {
- return false;
- }
- if(((Command)obj).command == null) {
- return (obj != null) && obj.getClass() == getClass() && command == null &&
- ((Command)obj).icon == icon && ((Command)obj).commandId == commandId;
- } else {
- return (obj != null) && obj.getClass() == getClass() && ((Command)obj).command.equals(command) &&
- ((Command)obj).icon == icon && ((Command)obj).commandId == commandId;
- }
- }
- /**
- * Allows storing commands in a vector/hashtable
- *
- * @return unique hashcode for the command class
- */
- public int hashCode() {
- return getClass().hashCode() + commandId;
- }
-
- /**
- * This method is called when the soft button/Menu item is clicked
- *
- * @param evt the Event Object
- */
- public void actionPerformed(ActionEvent evt) {
- }
- /**
- * Indicates that this action should occur by default on fire action event
- *
- * @return true if it is the default action event
- * @deprecated this functionality is no longer supported use Form.setDefaultCommand() instead
- */
- public boolean isDefaultAction() {
- return false;
- }
- /**
- * Setting the default action event
- *
- * @param defaultAction the default action event
- * @deprecated this functionality is no longer supported use Form.setDefaultCommand() instead
- */
- public void setDefaultAction(boolean defaultAction) {
- }
-
- /**
- * Indicates whether this command causes the dialog to dispose implicitly
- */
- void setDisposesDialog(boolean disposesDialog) {
- this.disposesDialog = disposesDialog;
- }
-
- /**
- * Indicates whether this command causes the dialog to dispose implicitly
- */
- boolean isDisposesDialog() {
- return disposesDialog;
- }
- }