Fix xdg-runcher doesn't show up

xdg-runcher calls "subscribe" before requestSurface,
then windowmanager reject it because WMClient object
is not created yet.
This patch changes to register WMClient
if it is not created when App calls "subscribe".
Application doesn't need to care about the order of
"requestSurface" and "subscribe".

Bug-AGL: SPEC-2218

Change-Id: Ia82ff939dfdb2bbfd377bd50fd3d4b844451cd3b
Signed-off-by: Kazumasa Mitsunari <knimitz@witz-inc.co.jp>

1 files changed, 51 insertions, 21 deletions

diff --git a/src/window_manager.cpp b/src/window_manager.cpp
index 4fcab5f..1e3a926 100644
--- a/src/window_manager.cpp
+++ b/src/window_manager.cpp
@@ -167,21 +167,25 @@ result<int> WindowManager::api_request_surface(char const *appid, char const *dr
 
     if(!g_app_list.contains(str_id))
     {
-        lid = this->lc->getNewLayerID(role);
+        unsigned lid = this->generateLayerForClient(role);
         if (lid == 0)
         {
-            // register drawing_name as fallback and make it displayed.
-            lid = this->lc->getNewLayerID(string("fallback"));
-            HMI_DEBUG("%s is not registered in layers.json, then fallback as normal app", role.c_str());
-            if (lid == 0)
-            {
-                return Err<int>("Designated role does not match any role, fallback is disabled");
-            }
+            return Err<int>("Designated role does not match any role, fallback is disabled");
         }
-        this->lc->createNewLayer(lid);
         // add client into the db
         g_app_list.addClient(str_id, lid, role);
     }
+    else
+    {
+        // This case occurs when an client calls "subscribe" before request_surface.
+        // Then application doesn't have layer and role yet.
+        auto client = g_app_list.lookUpClient(str_id);
+        if(client->layerID() == 0)
+        {
+            client->setLayerID(this->generateLayerForClient(role));
+        }
+        client->setRole(role);
+    }
 
     // generate surface ID for ivi-shell application
     auto rname = this->id_alloc.lookup(role);
@@ -224,21 +228,25 @@ char const *WindowManager::api_request_surface(char const *appid, char const *dr
 
     if(!g_app_list.contains(str_id))
     {
-        unsigned l_id = this->lc->getNewLayerID(role);
+        unsigned l_id = this->generateLayerForClient(role);
         if (l_id == 0)
         {
-            // register drawing_name as fallback and make it displayed.
-            l_id = this->lc->getNewLayerID("fallback");
-            HMI_DEBUG("%s is not registered in layers.json, then fallback as normal app", role.c_str());
-            if (l_id == 0)
-            {
-                return "Designated role does not match any role, fallback is disabled";
-            }
+            return "Designated role does not match any role, fallback is disabled";
         }
-        this->lc->createNewLayer(l_id);
         // add client into the db
         g_app_list.addClient(str_id, l_id, role);
     }
+    else
+    {
+        // This case occurs when an client calls "subscribe" before request_surface.
+        // Then application doesn't have layer and role yet.
+        auto client = g_app_list.lookUpClient(str_id);
+        if(client->layerID() == 0)
+        {
+            client->setLayerID(this->generateLayerForClient(role));
+        }
+        client->setRole(role);
+    }
 
     auto rname = this->id_alloc.lookup(role);
 
@@ -501,11 +509,15 @@ bool WindowManager::api_subscribe(afb_req_t req, EventType event_id)
     {
         string id = appid;
         free(appid);
-        auto client = g_app_list.lookUpClient(id);
-        if(client != nullptr)
+        if(!g_app_list.contains(id))
         {
-            ret = client->subscribe(req, kListEventName[event_id]);
+            g_app_list.addClient(id);
         }
+        g_app_list.lookUpClient(id)->subscribe(req, kListEventName[event_id]);
+    }
+    else
+    {
+        HMI_ERROR("appid is not set");
     }
     return ret;
 }
@@ -699,6 +711,24 @@ void WindowManager::processError(WMError error)
     this->processNextRequest();
 }
 
+unsigned WindowManager::generateLayerForClient(const string& role)
+{
+    unsigned lid = this->lc->getNewLayerID(role);
+    if (lid == 0)
+    {
+        // register drawing_name as fallback and make it displayed.
+        lid = this->lc->getNewLayerID(string("fallback"));
+        HMI_DEBUG("%s is not registered in layers.json, then fallback as normal app", role.c_str());
+        if (lid == 0)
+        {
+            return lid;
+        }
+    }
+    this->lc->createNewLayer(lid);
+    // add client into the db
+    return lid;
+}
+
 WMError WindowManager::setRequest(const string& appid, const string &role, const string &area,
                             Task task, unsigned* req_num)
 {