From 1ada1b7f0bdf048ea3d5f01c6b8eb7badfd97eae Mon Sep 17 00:00:00 2001
From: Tony Crisci <tony@dubstepdish.com>
Date: Tue, 21 Nov 2017 11:19:55 -0500
Subject: [PATCH] xwm: x11 data source

---
 xwayland/selection.c | 46 +++++++++++++++++++++++++++++++++++++++-----
 xwayland/xwm.h       |  1 +
 2 files changed, 42 insertions(+), 5 deletions(-)

diff --git a/xwayland/selection.c b/xwayland/selection.c
index 1c9fcf130..c458f867b 100644
--- a/xwayland/selection.c
+++ b/xwayland/selection.c
@@ -1,5 +1,7 @@
 #include <xcb/xfixes.h>
+#include <fcntl.h>
 #include "wlr/util/log.h"
+#include "wlr/types/wlr_data_device.h"
 #include "xwm.h"
 
 static int xwm_handle_selection_property_notify(struct wlr_xwm *xwm,
@@ -30,21 +32,55 @@ static void xwm_handle_selection_request(struct wlr_xwm *xwm,
 	return;
 }
 
-static void xwm_get_selection_targets(struct wlr_xwm *xwm) {
-	wlr_log(L_DEBUG, "TODO: GET SELECTION TARGETS");
-}
-
 static void xwm_get_selection_data(struct wlr_xwm *xwm) {
 	wlr_log(L_DEBUG, "TODO: GET SELECTION DATA");
 }
 
+struct x11_data_source {
+	struct wlr_data_source base;
+	struct wlr_xwm *xwm;
+};
+
+static void data_source_accept(struct wlr_data_source *source, uint32_t time,
+		const char *mime_type) {
+}
+
+static void data_source_send(struct wlr_data_source *base,
+		const char *mime_type, int32_t fd) {
+	struct x11_data_source *source = (struct x11_data_source *)base;
+	struct wlr_xwm *xwm = source->xwm;
+
+	if (strcmp(mime_type, "text/plain;charset=utf-8") == 0) {
+		// Get data for the utf8_string target
+		xcb_convert_selection(xwm->xcb_conn,
+				xwm->selection_window,
+				xwm->atoms[CLIPBOARD],
+				xwm->atoms[UTF8_STRING],
+				xwm->atoms[WL_SELECTION],
+				XCB_TIME_CURRENT_TIME);
+
+		xcb_flush(xwm->xcb_conn);
+
+		fcntl(fd, F_SETFL, O_WRONLY | O_NONBLOCK);
+		xwm->data_source_fd = fd;
+	}
+}
+
+static void data_source_cancel(struct wlr_data_source *source) {
+}
+
+static void xwm_get_selection_targets(struct wlr_xwm *xwm) {
+	// set the wayland clipboard selection to the copied selection
+	wlr_log(L_DEBUG, "TODO: GET SELECTION TARGETS");
+}
+
 static void xwm_handle_selection_notify(struct wlr_xwm *xwm,
 		xcb_generic_event_t *event) {
 	xcb_selection_notify_event_t *selection_notify =
 		(xcb_selection_notify_event_t *) event;
 
 	if (selection_notify->property == XCB_ATOM_NONE) {
-		wlr_log(L_DEBUG, "TODO: convert selection failed");
+		wlr_log(L_ERROR, "convert selection failed");
 	} else if (selection_notify->target == xwm->atoms[TARGETS]) {
 		xwm_get_selection_targets(xwm);
 	} else {
diff --git a/xwayland/xwm.h b/xwayland/xwm.h
index ea1edc656..e1e42a54c 100644
--- a/xwayland/xwm.h
+++ b/xwayland/xwm.h
@@ -65,6 +65,7 @@ struct wlr_xwm {
 	xcb_window_t selection_owner;
 	xcb_timestamp_t selection_timestamp;
 	int incr;
+	int data_source_fd;
 
 	struct wlr_xwayland_surface *focus_surface;