Impove event process

1. manager event list in hs_instance.
2. add setEventHook interface to hook event.

Change-Id: I65a64f2d16343eb68d22fd1ad9d5fbf565f5967a
Signed-off-by: wang_zhiqiang <wang_zhiqiang@dl.cn.nexty-ele.com>

1 files changed, 80 insertions, 2 deletions

diff --git a/src/homescreen.cpp b/src/homescreen.cpp
index b11663b..31c79f8 100644
--- a/src/homescreen.cpp
+++ b/src/homescreen.cpp
@@ -19,6 +19,8 @@
 #endif
 #include <memory>
 #include <algorithm>
+#include <unordered_map>
+#include <list>
 #include "hs-helper.h"
 #include "hs-clientmanager.h"
 #include "hs-appinfo.h"
@@ -37,6 +39,10 @@ struct hs_instance {
 
   hs_instance() : client_manager(HS_ClientManager::instance()), app_info(HS_AppInfo::instance()) {}
   int init(afb_api_t api);
+  void setEventHook(const char *event, const event_hook_func f);
+  void onEvent(afb_api_t api, const char *event, struct json_object *object);
+private:
+  std::unordered_map<std::string, std::list<event_hook_func>> event_hook_list;
 };
 
 /**
@@ -67,8 +73,80 @@ int hs_instance::init(afb_api_t api)
     return 0;
 }
 
+/**
+ * set event hook
+ *
+ * #### Parameters
+ *  - event  : event name
+ *  - f : hook function
+ *
+ * #### Return
+ * Nothing
+ */
+void hs_instance::setEventHook(const char *event, const event_hook_func f)
+{
+    if(event == nullptr || f == nullptr) {
+        AFB_WARNING("argument is null.");
+        return;
+    }
+
+    std::string ev(event);
+    auto it = event_hook_list.find(ev);
+    if(it != event_hook_list.end()) {
+        it->second.push_back(f);
+    }
+    else {
+        std::list<event_hook_func> l;
+        l.push_back(f);
+        event_hook_list[ev] = std::move(l);
+    }
+}
+
+/**
+ * onEvent function
+ *
+ * #### Parameters
+ *  - api : the api serving the request
+ *  - event  : event name
+ *  - object : event json object
+ *
+ * #### Return
+ * Nothing
+ */
+void hs_instance::onEvent(afb_api_t api, const char *event, struct json_object *object)
+{
+    std::string ev(event);
+    auto it = event_hook_list.find(ev);
+    if(it != event_hook_list.end()) {
+        for(auto &ref : it->second) {
+            if(ref(api, event, object))
+                break;
+        }
+    }
+}
+
 static struct hs_instance *g_hs_instance;
 
+/**
+ * set event hook
+ *
+ * #### Parameters
+ *  - event  : event name
+ *  - f : hook function pointer
+ *
+ * #### Return
+ * Nothing
+ */
+void setEventHook(const char *event, const event_hook_func f)
+{
+    if(g_hs_instance == nullptr) {
+        AFB_ERROR("g_hs_instance is null.");
+        return;
+    }
+
+    g_hs_instance->setEventHook(event, f);
+}
+
 /*
 ********** Method of HomeScreen Service (API) **********
 */
@@ -491,8 +569,8 @@ static int init(afb_api_t api)
  */
 static void onevent(afb_api_t api, const char *event, struct json_object *object)
 {
-    AFB_DEBUG("on_event %s", event);
-    g_hs_instance->app_info->onEvent(api, event, object);
+    AFB_INFO("on_event %s", event);
+    g_hs_instance->onEvent(api, event, object);
 }
 
 const afb_binding_t afbBindingExport = {