ipc: implement ext-data-control

wire/ext_data_control_device_v1.txt

@@ -0,0 +1,30 @@
+# requests
+
+request set_selection {
+    source: id(ext_data_control_source_v1),
+}
+
+request destroy {
+
+}
+
+request set_primary_selection {
+    source: id(ext_data_control_source_v1),
+}
+
+# events
+
+event data_offer {
+    id: id(ext_data_control_offer_v1),
+}
+
+event selection {
+    id: id(ext_data_control_offer_v1),
+}
+
+event finished {
+}
+
+event primary_selection {
+    id: id(ext_data_control_offer_v1),
+}

wire/ext_data_control_manager_v1.txt

@@ -0,0 +1,14 @@
+# requests
+
+request create_data_source {
+    id: id(ext_data_control_source_v1),
+}
+
+request get_data_device {
+    id: id(ext_data_control_device_v1),
+    seat: id(wl_seat),
+}
+
+request destroy {
+
+}

wire/ext_data_control_offer_v1.txt

@@ -0,0 +1,16 @@
+# requests
+
+request receive {
+    mime_type: str,
+    fd: fd,
+}
+
+request destroy {
+
+}
+
+# events
+
+event offer {
+    mime_type: str,
+}

wire/ext_data_control_source_v1.txt

@@ -0,0 +1,20 @@
+# requests
+
+request offer {
+    mime_type: str,
+}
+
+request destroy {
+
+}
+
+# events
+
+event send {
+    mime_type: str,
+    fd: fd,
+}
+
+event cancelled {
+
+}