From dd1da27b7cda951f00ea1a3386ba2f8b69d08e92 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?F=E5=98=89=E9=98=B3?= <fjy8018@qq.com>
Date: Wed, 22 Jul 2020 16:29:21 +0800
Subject: [PATCH] =?UTF-8?q?=E7=8A=B6=E6=80=81=E6=A8=A1=E5=BC=8F?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .idea/.gitignore                              |  2 +
 .idea/Design-pattern.iml                      |  2 +
 .idea/encodings.xml                           |  1 +
 .idea/jarRepositories.xml                     | 20 ++++++++
 .idea/misc.xml                                |  3 ++
 pom.xml                                       |  6 +++
 .../behavior/state/CourseVideoContext.java    | 49 +++++++++++++++++++
 .../behavior/state/CourseVideoState.java      | 32 ++++++++++++
 .../pattern/behavior/state/PauseState.java    | 28 +++++++++++
 .../pattern/behavior/state/PlayState.java     | 28 +++++++++++
 .../pattern/behavior/state/SpeedState.java    | 27 ++++++++++
 .../pattern/behavior/state/StopState.java     | 27 ++++++++++
 .../pattern/behavior/state/PlayStateTest.java | 31 ++++++++++++
 13 files changed, 256 insertions(+)
 create mode 100644 .idea/.gitignore
 create mode 100644 .idea/Design-pattern.iml
 create mode 100644 .idea/jarRepositories.xml
 create mode 100644 src/main/java/top/fjy8018/designpattern/pattern/behavior/state/CourseVideoContext.java
 create mode 100644 src/main/java/top/fjy8018/designpattern/pattern/behavior/state/CourseVideoState.java
 create mode 100644 src/main/java/top/fjy8018/designpattern/pattern/behavior/state/PauseState.java
 create mode 100644 src/main/java/top/fjy8018/designpattern/pattern/behavior/state/PlayState.java
 create mode 100644 src/main/java/top/fjy8018/designpattern/pattern/behavior/state/SpeedState.java
 create mode 100644 src/main/java/top/fjy8018/designpattern/pattern/behavior/state/StopState.java
 create mode 100644 src/test/java/top/fjy8018/designpattern/pattern/behavior/state/PlayStateTest.java

diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..e7e9d11
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,2 @@
+# Default ignored files
+/workspace.xml
diff --git a/.idea/Design-pattern.iml b/.idea/Design-pattern.iml
new file mode 100644
index 0000000..78b2cc5
--- /dev/null
+++ b/.idea/Design-pattern.iml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4" />
\ No newline at end of file
diff --git a/.idea/encodings.xml b/.idea/encodings.xml
index b26911b..fade66b 100644
--- a/.idea/encodings.xml
+++ b/.idea/encodings.xml
@@ -2,5 +2,6 @@
 <project version="4">
   <component name="Encoding">
     <file url="file://$PROJECT_DIR$" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
   </component>
 </project>
\ No newline at end of file
diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml
new file mode 100644
index 0000000..712ab9d
--- /dev/null
+++ b/.idea/jarRepositories.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Central Repository" />
+      <option name="url" value="https://repo.maven.apache.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 4b661a5..3ccb27b 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="JavaScriptSettings">
+    <option name="languageLevel" value="ES6" />
+  </component>
   <component name="MavenProjectsManager">
     <option name="originalFiles">
       <list>
diff --git a/pom.xml b/pom.xml
index 6d1e5f4..8332589 100644
--- a/pom.xml
+++ b/pom.xml
@@ -134,6 +134,12 @@
             <artifactId>commons-pool2</artifactId>
             <version>2.4.2</version>
         </dependency>
+        <!-- https://mvnrepository.com/artifact/com.sun.faces/jsf-api -->
+        <dependency>
+            <groupId>com.sun.faces</groupId>
+            <artifactId>jsf-api</artifactId>
+            <version>2.2.20</version>
+        </dependency>
 
         <dependency>
             <groupId>mysql</groupId>
diff --git a/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/CourseVideoContext.java b/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/CourseVideoContext.java
new file mode 100644
index 0000000..03e359c
--- /dev/null
+++ b/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/CourseVideoContext.java
@@ -0,0 +1,49 @@
+package top.fjy8018.designpattern.pattern.behavior.state;
+
+/**
+ * 视频上下文
+ *
+ * @author F嘉阳
+ * @date 2020/7/22 15:20
+ */
+public class CourseVideoContext {
+
+    /**
+     * 存储当前状态
+     */
+    private CourseVideoState courseVideoState;
+
+    /**
+     * 结合享元模式设置为内存共享
+     */
+    public final static PlayState PLAY_STATE = new PlayState();
+    public final static StopState STOP_STATE = new StopState();
+    public final static PauseState PAUSE_STATE = new PauseState();
+    public final static SpeedState SPEED_STATE = new SpeedState();
+
+    public CourseVideoState getCourseVideoState() {
+        return courseVideoState;
+    }
+
+    public void setCourseVideoState(CourseVideoState courseVideoState) {
+        this.courseVideoState = courseVideoState;
+        // 把自己本身设置到实例上下文中
+        this.courseVideoState.setCourseVideoContext(this);
+    }
+
+    public void play() {
+        this.courseVideoState.play();
+    }
+
+    public void speed() {
+        this.courseVideoState.speed();
+    }
+
+    public void stop() {
+        this.courseVideoState.stop();
+    }
+
+    public void pause() {
+        this.courseVideoState.pause();
+    }
+}
diff --git a/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/CourseVideoState.java b/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/CourseVideoState.java
new file mode 100644
index 0000000..4b886c3
--- /dev/null
+++ b/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/CourseVideoState.java
@@ -0,0 +1,32 @@
+package top.fjy8018.designpattern.pattern.behavior.state;
+
+import javax.faces.lifecycle.Lifecycle;
+
+/**
+ * 视频播放状态转换场景
+ * <p>
+ * {@link Lifecycle#execute(javax.faces.context.FacesContext)} 该方法通过外部状态控制改变行为
+ * {@link javax.faces.webapp.FacesServlet} 状态控制
+ *
+ * @author F嘉阳
+ * @date 2020/7/22 15:20
+ */
+public abstract class CourseVideoState {
+    /**
+     * 视频上下文
+     */
+    protected CourseVideoContext courseVideoContext;
+
+    public void setCourseVideoContext(CourseVideoContext courseVideoContext) {
+        this.courseVideoContext = courseVideoContext;
+    }
+
+    public abstract void play();
+
+    public abstract void speed();
+
+    public abstract void pause();
+
+    public abstract void stop();
+
+}
diff --git a/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/PauseState.java b/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/PauseState.java
new file mode 100644
index 0000000..c002421
--- /dev/null
+++ b/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/PauseState.java
@@ -0,0 +1,28 @@
+package top.fjy8018.designpattern.pattern.behavior.state;
+
+/**
+ * @author F嘉阳
+ * @date 2020/7/22 15:20
+ */
+public class PauseState extends CourseVideoState {
+
+    @Override
+    public void play() {
+        super.courseVideoContext.setCourseVideoState(CourseVideoContext.PLAY_STATE);
+    }
+
+    @Override
+    public void speed() {
+        super.courseVideoContext.setCourseVideoState(CourseVideoContext.SPEED_STATE);
+    }
+
+    @Override
+    public void pause() {
+        System.out.println("暂停播放课程视频状态");
+    }
+
+    @Override
+    public void stop() {
+        super.courseVideoContext.setCourseVideoState(CourseVideoContext.STOP_STATE);
+    }
+}
diff --git a/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/PlayState.java b/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/PlayState.java
new file mode 100644
index 0000000..3895462
--- /dev/null
+++ b/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/PlayState.java
@@ -0,0 +1,28 @@
+package top.fjy8018.designpattern.pattern.behavior.state;
+
+/**
+ * @author F嘉阳
+ * @date 2020/7/22 15:20
+ */
+public class PlayState extends CourseVideoState {
+
+    @Override
+    public void play() {
+        System.out.println("正常播放课程视频状态");
+    }
+
+    @Override
+    public void speed() {
+        super.courseVideoContext.setCourseVideoState(CourseVideoContext.SPEED_STATE);
+    }
+
+    @Override
+    public void pause() {
+        super.courseVideoContext.setCourseVideoState(CourseVideoContext.PAUSE_STATE);
+    }
+
+    @Override
+    public void stop() {
+        super.courseVideoContext.setCourseVideoState(CourseVideoContext.STOP_STATE);
+    }
+}
diff --git a/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/SpeedState.java b/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/SpeedState.java
new file mode 100644
index 0000000..bfcdd51
--- /dev/null
+++ b/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/SpeedState.java
@@ -0,0 +1,27 @@
+package top.fjy8018.designpattern.pattern.behavior.state;
+
+/**
+ * @author F嘉阳
+ * @date 2020/7/22 15:20
+ */
+public class SpeedState extends CourseVideoState {
+    @Override
+    public void play() {
+        super.courseVideoContext.setCourseVideoState(CourseVideoContext.PLAY_STATE);
+    }
+
+    @Override
+    public void speed() {
+        System.out.println("快进播放课程视频状态");
+    }
+
+    @Override
+    public void pause() {
+        super.courseVideoContext.setCourseVideoState(CourseVideoContext.PAUSE_STATE);
+    }
+
+    @Override
+    public void stop() {
+        super.courseVideoContext.setCourseVideoState(CourseVideoContext.STOP_STATE);
+    }
+}
diff --git a/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/StopState.java b/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/StopState.java
new file mode 100644
index 0000000..6ac3c4a
--- /dev/null
+++ b/src/main/java/top/fjy8018/designpattern/pattern/behavior/state/StopState.java
@@ -0,0 +1,27 @@
+package top.fjy8018.designpattern.pattern.behavior.state;
+
+/**
+ * @author F嘉阳
+ * @date 2020/7/22 15:20
+ */
+public class StopState extends CourseVideoState {
+    @Override
+    public void play() {
+        super.courseVideoContext.setCourseVideoState(CourseVideoContext.PLAY_STATE);
+    }
+
+    @Override
+    public void speed() {
+        System.out.println("ERROR 停止状态不能快进!!");
+    }
+
+    @Override
+    public void pause() {
+        System.out.println("ERROR 停止状态不能暂停!!");
+    }
+
+    @Override
+    public void stop() {
+        System.out.println("停止播放课程视频状态");
+    }
+}
diff --git a/src/test/java/top/fjy8018/designpattern/pattern/behavior/state/PlayStateTest.java b/src/test/java/top/fjy8018/designpattern/pattern/behavior/state/PlayStateTest.java
new file mode 100644
index 0000000..4502812
--- /dev/null
+++ b/src/test/java/top/fjy8018/designpattern/pattern/behavior/state/PlayStateTest.java
@@ -0,0 +1,31 @@
+package top.fjy8018.designpattern.pattern.behavior.state;
+
+import org.junit.jupiter.api.Test;
+
+/**
+ * @author F嘉阳
+ * @date 2020/7/22 16:19
+ */
+class PlayStateTest {
+
+    @Test
+    void play() {
+        CourseVideoContext courseVideoContext = new CourseVideoContext();
+        courseVideoContext.setCourseVideoState(new PlayState());
+
+        System.out.println("当前状态:" + courseVideoContext.getCourseVideoState().getClass().getSimpleName());
+        courseVideoContext.pause();
+
+        System.out.println("当前状态:" + courseVideoContext.getCourseVideoState().getClass().getSimpleName());
+
+        courseVideoContext.speed();
+
+        System.out.println("当前状态:" + courseVideoContext.getCourseVideoState().getClass().getSimpleName());
+
+        courseVideoContext.stop();
+
+        System.out.println("当前状态:" + courseVideoContext.getCourseVideoState().getClass().getSimpleName());
+
+        courseVideoContext.speed();
+    }
+}
\ No newline at end of file