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DeyuGoGoDeyuGoGo
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Merge pull request #9 from DeyuGoGo/command
add command pattern
2 parents 2ac10ee + dc4a70c commit 61c97ef

15 files changed

Lines changed: 260 additions & 1 deletion

‎HeadFirstDesignPatterns/src/commnad/AnimalSleepCommand.java‎

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package commnad;
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import util.Animal;
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public class AnimalSleepCommand implements Command{
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private Animal mAnimal ;
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public AnimalSleepCommand(Animal animal) {
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this.mAnimal = animal;
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}
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@Override
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public void excute() {
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mAnimal.Sleep();
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}
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@Override
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public void undo() {
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mAnimal.WakeUp();
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}
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}

‎HeadFirstDesignPatterns/src/commnad/AnimalWakeUpCommnad.java‎

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package commnad;
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import util.Animal;
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public class AnimalWakeUpCommnad implements Command{
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private Animal mAnimal ;
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public AnimalWakeUpCommnad(Animal animal) {
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this.mAnimal = animal;
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}
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@Override
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public void excute() {
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mAnimal.WakeUp();
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}
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@Override
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public void undo() {
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mAnimal.Sleep();
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}
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}

‎HeadFirstDesignPatterns/src/commnad/Command.java‎

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package commnad;
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public interface Command {
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public void excute();
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public void undo();
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}

‎HeadFirstDesignPatterns/src/commnad/CommandController.java‎

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package commnad;
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public class CommandController {
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private Command[] onCommnads ;
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private Command[] offCommnads ;
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private Command lastCommnad;
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private int commadCounts = 2;
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public CommandController(){
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onCommnads = new Command[commadCounts];
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offCommnads = new Command[commadCounts];
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for(int i = 0 ; i < commadCounts ; i++){
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onCommnads[i] = new NoCommnad();
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offCommnads[i] = new NoCommnad();
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}
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lastCommnad = new NoCommnad();
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}
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public void setCommnad(int slot , Command OnCommnad , Command offCommnad){
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onCommnads[slot] = OnCommnad;
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offCommnads[slot] = offCommnad;
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}
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public void onGetOnCommnad(int slot){
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Command findCommand = onCommnads[slot];
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findCommand.excute();
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lastCommnad =findCommand;
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}
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public void onGetOffCommnad(int slot){
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Command findCommand = offCommnads[slot];
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findCommand.excute();
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lastCommnad = findCommand;
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}
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public void onGetUndoCommand(){
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lastCommnad.undo();
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}
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}

‎HeadFirstDesignPatterns/src/commnad/DeyuScreen.java‎

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package commnad;
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import util.JavaLog;
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public class DeyuScreen extends Screen{
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@Override
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public void on() {
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openPower();
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openBlueLight();
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}
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@Override
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public void off() {
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closePower();
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}
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private void openPower(){
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JavaLog.d("openPower");
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}
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private void closePower(){
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JavaLog.d("closePower");
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}
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private void openBlueLight(){
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JavaLog.d("open low blue light");
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}
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}

‎HeadFirstDesignPatterns/src/commnad/Go.java‎

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package commnad;
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import util.Animal;
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import util.Deyu;
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public class Go {
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public static void main(String[] args) {
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CommandController mCommandController = new CommandController();
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Animal mAnimal = new Deyu();
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Screen mScreen = new DeyuScreen();
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// Default no commnad
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mCommandController.onGetOnCommnad(0);
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mCommandController.onGetOffCommnad(1);
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mCommandController.onGetUndoCommand();
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// Set command to slot
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Command mAnimalWakeUpCommnad = new AnimalWakeUpCommnad(mAnimal);
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Command mScreenOnCommnad = new ScreenOnCommnad(mScreen);
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Command mAnimalSleepCommnad = new AnimalSleepCommand(mAnimal);
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Command mScreenOffCommnad = new ScreenOffCommnad(mScreen);
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mCommandController.setCommnad(0, mAnimalWakeUpCommnad , mAnimalSleepCommnad);
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mCommandController.setCommnad(1, mScreenOnCommnad , mScreenOffCommnad);
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mCommandController.onGetOnCommnad(0);
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mCommandController.onGetOffCommnad(1);
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mCommandController.onGetUndoCommand();
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// Set slot 0 to MacroCommand
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MacroCommand UpToLookScreanCommand = new MacroCommand(new Command[]{mAnimalWakeUpCommnad ,mScreenOnCommnad});
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MacroCommand InNightSleepCommand = new MacroCommand(new Command[]{mAnimalSleepCommnad , mScreenOffCommnad});
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mCommandController.setCommnad(0, UpToLookScreanCommand, InNightSleepCommand);
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mCommandController.onGetOnCommnad(0);
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mCommandController.onGetOffCommnad(0);
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}
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}

‎HeadFirstDesignPatterns/src/commnad/MacroCommand.java‎

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package commnad;
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public class MacroCommand implements Command{
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Command[] mCommands;
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public MacroCommand(Command[] commnads){
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mCommands = commnads;
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}
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@Override
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public void excute() {
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for(Command command : mCommands){
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command.excute();
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}
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}
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@Override
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public void undo() {
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for(Command command : mCommands){
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command.undo();
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}
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}
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}

‎HeadFirstDesignPatterns/src/commnad/NoCommnad.java‎

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package commnad;
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import util.JavaLog;
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public class NoCommnad implements Command{
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@Override
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public void excute() {
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JavaLog.d("No commnad to exctue");
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}
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@Override
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public void undo() {
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JavaLog.d("No commnad to undo");
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}
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}

‎HeadFirstDesignPatterns/src/commnad/README.md‎

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##命令模式
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____
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命令模式：將請求封裝成物件，以便使用不同的請求，佇列，或者日誌，參數化其他物件。命令模式也支援可恢復的作業。
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可以把一堆要做的事包裝成command物件，放到陣列中一個一個做，把要做的是包裝同一種執行方法，像是go , do , run ,excute讓接受這些command的控制器可以簡單地去告訴該做事的人做事，就像是員工聽到”上班"就會去做他們份內的事，你可以在對的時間叫他們上班也可以一個一個叫(command Q)，而不用知道上班實際內容為何。
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____

‎HeadFirstDesignPatterns/src/commnad/Screen.java‎

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package commnad;
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public abstract class Screen {
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public abstract void on();
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public abstract void off();
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}

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