DevTools - add DeviceActor and update Root to own global actors

components/devtools/actors/device.rs

@@ -0,0 +1,86 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use actor::{Actor, ActorMessageStatus, ActorRegistry};
+use serde_json::{Map, Value};
+use std::net::TcpStream;
+use protocol::{ActorDescription,  Method};
+use protocol::JsonPacketStream;
+
+#[derive(Serialize)]
+struct GetDescriptionReply {
+    from: String,
+    value: SystemInfo,
+}
+
+#[derive(Serialize)]
+struct SystemInfo {
+    apptype: String,
+    platformVersion: String,
+}
+
+pub struct DeviceActor {
+    pub name: String,
+}
+
+impl Actor for DeviceActor {
+    fn name(&self) -> String {
+        self.name.clone()
+    }
+    fn handle_message(
+        &self,
+        _registry: &ActorRegistry,
+        msg_type: &str,
+        _msg: &Map<String, Value>,
+        stream: &mut TcpStream,
+    ) -> Result<ActorMessageStatus, ()> {
+
+        Ok(match msg_type {
+            "getDescription" => {
+
+                let msg = GetDescriptionReply {
+                    from: self.name(),
+                    value: SystemInfo {
+                        apptype: "servo".to_string(),
+                        platformVersion: "63.0".to_string(),
+                    }
+                };
+                stream.write_json_packet(&msg);
+                ActorMessageStatus::Processed
+            },
+
+            _ => ActorMessageStatus::Ignored,
+        })
+    }
+}
+
+impl DeviceActor {
+    pub fn new(name: String) -> DeviceActor {
+        DeviceActor { name: name }
+    }
+
+    pub fn description() -> ActorDescription {
+        ActorDescription {
+            category: "actor",
+            typeName: "device",
+            methods: vec![Method {
+                name: "getDescription",
+                request: Value::Null,
+                response: Value::Object(
+                    vec![(
+                        "value".to_owned(),
+                        Value::Object(
+                            vec![("_retval".to_owned(), Value::String("json".to_owned()))]
+                                .into_iter()
+                                .collect(),
+                        ),
+                    )].into_iter()
+                    .collect(),
+                ),
+            }],
+        }
+    }
+}
+
+