增加任务组的注解事件

AriaAnnotations/src/main/java/com/arialyy/annotations/DownloadGroup.java

@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2016 AriaLyy(https://github.com/AriaLyy/Aria)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.arialyy.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Created by Aria.Lao on 2017/6/6.
+ * Aria下载事件被注解的方法中，参数仅能有一个，参数类型为{@link com.arialyy.aria.core.download.DownloadGroupTask}
+ * <pre>
+ *   <code>
+ *      {@literal @}Download.onPre(groupName)
+ *       protected void onPre(DownloadGroupTask task) {
+ *       }
+ *   </code>
+ * </pre>
+ * {@literal @}Download.onPre("myGroupName")，如果你的注解中增加了url描述，
+ * 则表示，所有下载任务中，只有下载地址为"myGroupName"的任务才能回调该注解的方法。
+ */
+@Retention(RetentionPolicy.CLASS) @Target(ElementType.METHOD) public @interface DownloadGroup {
+  /**
+   * 如果你在方法中添加{@code @Download.onPre}注解，在预处理完成时，Aria会调用该方法
+   */
+  @Retention(RetentionPolicy.CLASS) @Target(ElementType.METHOD) public @interface onPre {
+    String[] value() default { AriaConstance.NO_URL };
+  }
+
+  /**
+   * 如果你在方法中添加{@code @Download.onTaskPre}注解，在任务预处理完成时，Aria会调用该方法
+   */
+  @Retention(RetentionPolicy.CLASS) @Target(ElementType.METHOD) public @interface onTaskPre {
+    String[] value() default { AriaConstance.NO_URL };
+  }
+
+  /**
+   * 如果你在方法中添加{@code @Download.onTaskResume}注解，在任务恢复下载时，Aria会调用该方法
+   */
+  @Retention(RetentionPolicy.CLASS) @Target(ElementType.METHOD) public @interface onTaskResume {
+    String[] value() default { AriaConstance.NO_URL };
+  }
+
+  /**
+   * 如果你在方法中添加{@code @Download.onTaskStart}注解，在任务开始下载时，Aria会调用该方法
+   */
+  @Retention(RetentionPolicy.CLASS) @Target(ElementType.METHOD) public @interface onTaskStart {
+    String[] value() default { AriaConstance.NO_URL };
+  }
+
+  /**
+   * 如果你在方法中添加{@code @Download.onTaskStop}注解，在任务停止时，Aria会调用该方法
+   */
+  @Retention(RetentionPolicy.CLASS) @Target(ElementType.METHOD) public @interface onTaskStop {
+    String[] value() default { AriaConstance.NO_URL };
+  }
+
+  /**
+   * 如果你在方法中添加{@code @Download.onTaskCancel}l注解，在任务取消时，Aria会调用该方法
+   */
+  @Retention(RetentionPolicy.CLASS) @Target(ElementType.METHOD) public @interface onTaskCancel {
+    String[] value() default { AriaConstance.NO_URL };
+  }
+
+  /**
+   * 如果你在方法中添加{@code @Download.onTaskFail)注解，在任务预失败时，Aria会调用该方法
+   */
+  @Retention(RetentionPolicy.CLASS) @Target(ElementType.METHOD) public @interface onTaskFail {
+    String[] value() default { AriaConstance.NO_URL };
+  }
+
+  /**
+   * 如果你在方法中添加{@code @Download.onTaskComplete}注解，在任务完成时，Aria会调用该方法
+   */
+  @Retention(RetentionPolicy.CLASS) @Target(ElementType.METHOD) public @interface onTaskComplete {
+    String[] value() default { AriaConstance.NO_URL };
+  }
+
+  /**
+   * 如果你在方法中添加{@code @Download.onTaskRunning}注解，在任务正在下载，Aria会调用该方法
+   */
+  @Retention(RetentionPolicy.CLASS) @Target(ElementType.METHOD) public @interface onTaskRunning {
+    String[] value() default { AriaConstance.NO_URL };
+  }
+}