From 0dc7e33e4bde4453ec3d268e07f859ce7a516f3c Mon Sep 17 00:00:00 2001
From: Window Maker <wmaker@localhost>
Date: Sat, 23 May 2026 14:55:23 +0200
Subject: [PATCH] WINGs: route clipboard through view backend vtable

Adds clipboard_store/clipboard_fetch to W_ViewBackend. Replaces
direct XFetchBuffer/XStoreBuffer calls in wtextfield.c and wtext.c
with vtable dispatch. X11 backend wraps Xlib, Wayland backend uses
an internal buffer.
---
 WINGs/WINGs/WINGsP.h.in |  4 ++++
 WINGs/wtext.c           |  6 ++++--
 WINGs/wtextfield.c      | 10 +++++++---
 WINGs/wview_wl.c        | 37 +++++++++++++++++++++++++++++++++++++
 WINGs/wview_x11.c       | 18 ++++++++++++++++++
 5 files changed, 70 insertions(+), 5 deletions(-)

diff --git a/WINGs/WINGs/WINGsP.h.in b/WINGs/WINGs/WINGsP.h.in
index 9d26bf2..810eeef 100644
--- a/WINGs/WINGs/WINGsP.h.in
+++ b/WINGs/WINGs/WINGsP.h.in
@@ -629,6 +629,10 @@ typedef struct W_ViewBackend {
 
     /* Flush pending display output */
     void  (*flush)(void *vctx);
+
+    /* Clipboard (cut buffer) */
+    void  (*clipboard_store)(void *vctx, const char *text, int len);
+    char *(*clipboard_fetch)(void *vctx, int *len_out);
 } W_ViewBackend;
 
 extern const W_ViewBackend W_ViewBackendX11;
diff --git a/WINGs/wtext.c b/WINGs/wtext.c
index f0dc530..c97436f 100644
--- a/WINGs/wtext.c
+++ b/WINGs/wtext.c
@@ -2369,7 +2369,8 @@ static void pasteText(WMView * view, Atom selection, Atom target, Time timestamp
 	} else {
 		int n;
 
-		text = XFetchBuffer(tPtr->view->screen->display, &n, 0);
+		text = tPtr->view->screen->viewBackend->clipboard_fetch(
+				tPtr->view->screen->viewBackendCtx, &n);
 
 		if (text) {
 			text[n] = 0;
@@ -2532,7 +2533,8 @@ static void handleActionEvents(WMEvent * event, void *data)
 			if (!WMRequestSelection(tPtr->view, XA_PRIMARY, XA_STRING,
 						event->u.button.time, pasteText, NULL)) {
 
-				text = XFetchBuffer(tPtr->view->screen->display, &n, 0);
+				text = tPtr->view->screen->viewBackend->clipboard_fetch(
+						tPtr->view->screen->viewBackendCtx, &n);
 				tPtr->flags.waitingForSelection = 0;
 
 				if (text) {
diff --git a/WINGs/wtextfield.c b/WINGs/wtextfield.c
index 23b9b70..557ce3a 100644
--- a/WINGs/wtextfield.c
+++ b/WINGs/wtextfield.c
@@ -1348,7 +1348,8 @@ static void pasteText(WMView * view, Atom selection, Atom target, Time timestamp
 	} else {
 		int n;
 
-		str = XFetchBuffer(tPtr->view->screen->display, &n, 0);
+		str = tPtr->view->screen->viewBackend->clipboard_fetch(
+				tPtr->view->screen->viewBackendCtx, &n);
 
 		if (str != NULL) {
 			str[n] = 0;
@@ -1470,7 +1471,8 @@ static void handleTextFieldActionEvents(WMEvent * event, void *data)
 
 				if (!WMRequestSelection(tPtr->view, XA_PRIMARY, XA_STRING,
 							event->u.button.time, pasteText, NULL)) {
-					text = XFetchBuffer(tPtr->view->screen->display, &n, 0);
+					text = tPtr->view->screen->viewBackend->clipboard_fetch(
+						tPtr->view->screen->viewBackendCtx, &n);
 
 					if (text) {
 						text[n] = 0;
@@ -1508,7 +1510,9 @@ static void handleTextFieldActionEvents(WMEvent * event, void *data)
 			else
 				start = tPtr->selection.position;
 
-			XStoreBuffer(dpy, &tPtr->text[start], count, 0);
+			tPtr->view->screen->viewBackend->clipboard_store(
+				tPtr->view->screen->viewBackendCtx,
+				&tPtr->text[start], count);
 		}
 
 		if (!tPtr->flags.secure &&
diff --git a/WINGs/wview_wl.c b/WINGs/wview_wl.c
index c3ccbd8..ceb8121 100644
--- a/WINGs/wview_wl.c
+++ b/WINGs/wview_wl.c
@@ -479,6 +479,41 @@ static void wl_selection_release(void *vctx, W_View *view, Atom selection)
 	(void)vctx; (void)view; (void)selection;
 }
 
+static char *wl_clipboard_buf = NULL;
+static int wl_clipboard_len = 0;
+
+static void wl_clipboard_store(void *vctx, const char *text, int len)
+{
+	(void)vctx;
+	if (wl_clipboard_buf)
+		wfree(wl_clipboard_buf);
+	if (text && len > 0) {
+		wl_clipboard_buf = wmalloc(len + 1);
+		memcpy(wl_clipboard_buf, text, len);
+		wl_clipboard_buf[len] = '\0';
+		wl_clipboard_len = len;
+	} else {
+		wl_clipboard_buf = NULL;
+		wl_clipboard_len = 0;
+	}
+}
+
+static char *wl_clipboard_fetch(void *vctx, int *len_out)
+{
+	(void)vctx;
+	if (wl_clipboard_buf && wl_clipboard_len > 0) {
+		char *copy = wmalloc(wl_clipboard_len + 1);
+		memcpy(copy, wl_clipboard_buf, wl_clipboard_len);
+		copy[wl_clipboard_len] = '\0';
+		if (len_out)
+			*len_out = wl_clipboard_len;
+		return copy;
+	}
+	if (len_out)
+		*len_out = 0;
+	return NULL;
+}
+
 static void wl_flush(void *vctx)
 {
 	(void)vctx;
@@ -507,4 +542,6 @@ const W_ViewBackend W_ViewBackendWL = {
 	.selection_release    = wl_selection_release,
 	.platform_init        = NULL,
 	.flush                = wl_flush,
+	.clipboard_store      = wl_clipboard_store,
+	.clipboard_fetch      = wl_clipboard_fetch,
 };
diff --git a/WINGs/wview_x11.c b/WINGs/wview_x11.c
index bfecbde..a85efce 100644
--- a/WINGs/wview_x11.c
+++ b/WINGs/wview_x11.c
@@ -206,6 +206,22 @@ static void x11_selection_release(void *vctx, W_View *view, Atom selection)
 	(void)vctx; (void)view; (void)selection;
 }
 
+static void x11_clipboard_store(void *vctx, const char *text, int len)
+{
+	W_Screen *scr = (W_Screen *)vctx;
+	XStoreBuffer(scr->display, text, len, 0);
+}
+
+static char *x11_clipboard_fetch(void *vctx, int *len_out)
+{
+	W_Screen *scr = (W_Screen *)vctx;
+	int n = 0;
+	char *text = XFetchBuffer(scr->display, &n, 0);
+	if (len_out)
+		*len_out = n;
+	return text;
+}
+
 static void x11_flush(void *vctx)
 {
 	W_Screen *scr = (W_Screen *)vctx;
@@ -235,4 +251,6 @@ const W_ViewBackend W_ViewBackendX11 = {
 	.selection_release    = x11_selection_release,
 	.platform_init        = W_X11PlatformInit,
 	.flush                = x11_flush,
+	.clipboard_store      = x11_clipboard_store,
+	.clipboard_fetch      = x11_clipboard_fetch,
 };