From 0a622ba10b38687f3af48a8bb522fc988038138f Mon Sep 17 00:00:00 2001
From: Andy Williams <andy@andywilliams.me>
Date: Thu, 26 Oct 2017 11:20:38 +0100
Subject: [PATCH] Add app to demo lifecycle using EFL_MAIN_EX

---
 c-lifecycle/meson.build          | 29 ++++++++++++
 c-lifecycle/src/lifecycle_main.c | 76 ++++++++++++++++++++++++++++++++
 c-lifecycle/src/meson.build      | 12 +++++
 3 files changed, 117 insertions(+)
 create mode 100644 c-lifecycle/meson.build
 create mode 100644 c-lifecycle/src/lifecycle_main.c
 create mode 100644 c-lifecycle/src/meson.build

diff --git a/c-lifecycle/meson.build b/c-lifecycle/meson.build
new file mode 100644
index 00000000..27365aac
--- /dev/null
+++ b/c-lifecycle/meson.build
@@ -0,0 +1,29 @@
+project(
+  'efl-example-lifecycle', 'c',
+  version : '0.0.1',
+  default_options: [ 'c_std=gnu99', 'warning_level=2' ],
+  meson_version : '>= 0.38.0')
+
+add_global_arguments('-DHAVE_CONFIG_H=1', '-DHAVE_CONFIG=1', language: 'c')
+
+config_h = configuration_data()
+config_h.set_quoted('PACKAGE', meson.project_name())
+config_h.set_quoted('PACKAGE_VERSION', meson.project_version())
+config_h.set_quoted('PACKAGE_STRING', meson.project_name() + ' ' + meson.project_version())
+config_h.set_quoted('PACKAGE_NAME', meson.project_name())
+
+config_h.set_quoted('EFL_EO_API_SUPPORT', '1')
+config_h.set_quoted('EFL_BETA_API_SUPPORT', '1')
+
+eina = dependency('eina', version : '>=1.20.99')
+efl = dependency('efl', version : '>=1.20.99')
+elm = dependency('elementary', version : '>=1.20.99')
+
+inc = include_directories('.')
+subdir('src')
+
+configure_file(
+  output : 'config.h',
+  install : false,
+  configuration: config_h
+)
diff --git a/c-lifecycle/src/lifecycle_main.c b/c-lifecycle/src/lifecycle_main.c
new file mode 100644
index 00000000..7ba1c389
--- /dev/null
+++ b/c-lifecycle/src/lifecycle_main.c
@@ -0,0 +1,76 @@
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <Eina.h>
+#include <Efl.h>
+#include <Elementary.h>
+
+/* 
+ * These are some helper methods for triggering lifecycle events for the purpose of this demo.
+ * efl_pause and efl_resume may never be called for your application, depending on your environment.
+ * This demo triggers them directly to show how you can respond.
+ */
+static void
+_method_delay_call(Efl_Event_Cb method, double delay, Efl_Loop *loop)
+{
+   efl_add(EFL_LOOP_TIMER_CLASS, loop, 
+           efl_event_callback_add(efl_added, EFL_LOOP_TIMER_EVENT_TICK, method, loop),
+           efl_loop_timer_interval_set(efl_added, delay));
+}
+
+static void
+_simulate_app_exit(void *data EINA_UNUSED, const Efl_Event *ev EINA_UNUSED)
+{
+   efl_exit(0);
+}
+
+static void
+_simulate_app_foreground(void *data, const Efl_Event *ev)
+{
+   Efl_Loop *loop = data;
+   efl_event_callback_call(loop, EFL_LOOP_EVENT_RESUME, NULL);
+   efl_del(ev->object);
+
+   _method_delay_call(_simulate_app_exit, 0.5, loop);
+}
+
+static void
+_simulate_app_background(void *data, const Efl_Event *ev)
+{
+   Efl_Loop *loop = data;
+   efl_event_callback_call(loop, EFL_LOOP_EVENT_PAUSE, NULL);
+   efl_del(ev->object);
+
+   _method_delay_call(_simulate_app_foreground, 1.0, loop);
+}
+/* end helper methods - what follows below is efl event handling that you can use in your apps. */
+
+EAPI void
+efl_pause(void *data EINA_UNUSED, const Efl_Event *ev EINA_UNUSED)
+{
+   printf("Lifecycle: paused\n");
+}
+
+EAPI void
+efl_resume(void *data EINA_UNUSED, const Efl_Event *ev EINA_UNUSED)
+{
+   printf("Lifecycle: resumed\n");
+}
+ 
+EAPI void
+efl_terminate(void *data EINA_UNUSED, const Efl_Event *ev EINA_UNUSED)
+{
+   printf("Lifecycle: terminated\n");
+}
+
+EAPI_MAIN void
+efl_main(void *data EINA_UNUSED, const Efl_Event *ev)
+{
+   printf("Lifecycle: launched\n");
+
+   // here we trigger the chain of simulated events to show how an app could respond to system lifecycle.
+   _method_delay_call(_simulate_app_background, 0.5, ev->object);
+}
+EFL_MAIN_EX()
+
diff --git a/c-lifecycle/src/meson.build b/c-lifecycle/src/meson.build
new file mode 100644
index 00000000..82e4e0e9
--- /dev/null
+++ b/c-lifecycle/src/meson.build
@@ -0,0 +1,12 @@
+src = files([
+  'lifecycle_main.c',
+])
+
+deps = [eina, efl, elm]
+
+executable('efl_example_lifecycle', src,
+  dependencies : deps,
+  include_directories : inc,
+  install : true
+)
+