Enable fallback, then display applications

This patch enables the app to show if it is not registered in layers.json.
The original installed app was not shown because the role of app is not
registered in WM as default.

[Patch set2]
Add the same process into requestSurface for RunXDG.

Backport from master

Bug-AGL : SPEC-1331

Change-Id: Ie99b971023a95a1924795b1ffc7311a630940b1d
Signed-off-by: Kazumasa Mitsunari <knimitz@witz-inc.co.jp>

1 files changed, 16 insertions, 3 deletions

diff --git a/src/app.cpp b/src/app.cpp
index 838908c..9efa34a 100644
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -654,8 +654,14 @@ void App::emit_visible(char const *label) { return emit_visible(label, true); }
 result<int> App::api_request_surface(char const *drawing_name) {
    auto lid = this->layers.get_layer_id(std::string(drawing_name));
    if (!lid) {
-      // TODO: Do we need to put these applications on the App layer?
-      return Err<int>("Drawing name does not match any role");
+      /**
+       * register drawing_name as fallback and make it displayed.
+       */
+      lid = this->layers.get_layer_id(std::string("Fallback"));
+      HMI_DEBUG("wm", "%s is not registered in layers.json, then fallback as normal app", drawing_name);
+      if(!lid){
+          return Err<int>("Drawing name does not match any role, Fallback is disabled");
+      }
    }
 
    auto rname = this->lookup_id(drawing_name);
@@ -686,7 +692,14 @@ char const *App::api_request_surface(char const *drawing_name,
    unsigned sid = std::stol(ivi_id);
 
    if (!lid) {
-       return "Drawing name does not match any role";
+      /**
+       * register drawing_name as fallback and make it displayed.
+       */
+      lid = this->layers.get_layer_id(std::string("Fallback"));
+      HMI_DEBUG("wm", "%s is not registered in layers.json, then fallback as normal app", drawing_name);
+      if(!lid){
+          return "Drawing name does not match any role, Fallback is disabled";
+      }
    }
 
    auto rname = this->lookup_id(drawing_name);