From 38da977e18f4b9e9a295119b8bac194a8a87a498 Mon Sep 17 00:00:00 2001
From: Marcus Fritzsch <marcus_fritzsch@mentor.com>
Date: Tue, 29 Aug 2017 14:55:35 +0200
Subject: [PATCH] app/main: add send_event() to binding_api

* Preliminary event support - wrong names, likely wrong implementation

Signed-off-by: Marcus Fritzsch <marcus_fritzsch@mentor.com>
---
 generate-binding-glue.py |  1 +
 src/app.cpp              | 23 +++++++++++++++++++++--
 src/app.hpp              |  6 ++++++
 src/main.cpp             | 12 ++++++++++++
 4 files changed, 40 insertions(+), 2 deletions(-)

diff --git a/generate-binding-glue.py b/generate-binding-glue.py
index 66f55cf..a489b63 100644
--- a/generate-binding-glue.py
+++ b/generate-binding-glue.py
@@ -87,6 +87,7 @@ def emit_afb_api(api):
     p('struct binding_api {')
     p('   typedef wm::result<json_object *> result_type;')
     p('   struct wm::App *app;')
+    p('   void send_event(char const *evname, json_object *payload);')
     for f in api['functions']:
         p('   result_type %(name)s(' % f + ', '.join(map(lambda x: '%(type)s %(name)s' % x, f.get('args', []))) + ');')
     p('};', '')
diff --git a/src/app.cpp b/src/app.cpp
index 76668cc..53a1a86 100644
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -352,7 +352,6 @@ char const *App::activate_surface(uint32_t surface_id) {
    /// // XXX: I am not sure I even need 5 elements...
    /// this->last_active.resize(std::min(int(this->last_active.size()), 5));
 
-
    // no error
    return nullptr;
 }
@@ -441,6 +440,22 @@ void App::surface_removed(uint32_t surface_id) {
                   });
 }
 
+void App::emit_activated(char const *label) {
+   this->api.send_event("activated", json_object_new_string(label));
+}
+
+void App::emit_deactivated(char const *label) {
+   this->api.send_event("deactivated", json_object_new_string(label));
+}
+
+void App::emit_syncdraw(char const *label) {
+   this->api.send_event("syncdraw", json_object_new_string(label));
+}
+
+void App::emit_visible(char const *label, bool is_visible) {
+   this->api.send_event(is_visible ? "visible" : "invisible", json_object_new_string(label));
+}
+
 result<int> App::request_surface(char const *drawing_name) {
    auto lid = this->layers.get_layer_id(std::string(drawing_name));
    if (!lid) {
@@ -475,7 +490,11 @@ char const *App::activate_surface(char const *drawing_name) {
    if (osid) {
       logdebug("ativate surface with name %s and id %u", drawing_name,
                osid.value());
-      return this->activate_surface(osid.value());
+      auto ret = this->activate_surface(osid.value());
+      if (!ret) {
+         this->emit_activated(drawing_name);
+      }
+      return ret;
    }
 
    logerror("surface %s unknown", drawing_name);
diff --git a/src/app.hpp b/src/app.hpp
index ac2eca6..da614a0 100644
--- a/src/app.hpp
+++ b/src/app.hpp
@@ -155,6 +155,12 @@ struct App {
    // Events from the compositor we are interested in
    void surface_created(uint32_t surface_id);
    void surface_removed(uint32_t surface_id);
+
+   // TMC WM Events to clients
+   void emit_activated(char const *label);
+   void emit_deactivated(char const *label);
+   void emit_syncdraw(char const *label);
+   void emit_visible(char const *label, bool is_visible);
 };
 
 }  // namespace wm
diff --git a/src/main.cpp b/src/main.cpp
index bea9f11..a768347 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -127,5 +127,17 @@ int binding_init() noexcept {
 
 #include "afb_binding_glue.inl"
 
+// XXX implement send_event right here...
+namespace wm {
+void binding_api::send_event(char const *evname, json_object *payload) {
+   logdebug("%s: %s(%s)", __func__, evname, json_object_to_json_string(payload));
+   afb_event ev = afb_daemon_make_event(evname);
+   int ret = afb_event_broadcast(ev, payload);
+   if (ret != 0) {
+      logdebug("afb_event_broadcast failed: %m");
+   }
+}
+}
+
 extern "C" const struct afb_binding_v2 afbBindingV2 = {
    "winman", nullptr, nullptr, winman_verbs, nullptr, binding_init, nullptr, 1};
-- 
2.16.6