From 87ee3298a3bc1024d6189849acaad3f850985189 Mon Sep 17 00:00:00 2001
From: Spoike <acceptthis@users.sourceforge.net>
Date: Mon, 7 Feb 2022 14:33:44 +0000
Subject: [PATCH] Let the browser port access the system clipboard (where
 permitted/allowed by browsers).

git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@6179 fc73d0e0-1445-4013-8a0c-d673dee63da5
---
 engine/web/ftejslib.js | 47 ++++++++++++++++++++++++++++++++++++++++++
 engine/web/sys_web.c   |  5 ++---
 2 files changed, 49 insertions(+), 3 deletions(-)

diff --git a/engine/web/ftejslib.js b/engine/web/ftejslib.js
index 2d1600707..d991594e5 100644
--- a/engine/web/ftejslib.js
+++ b/engine/web/ftejslib.js
@@ -69,6 +69,7 @@ mergeInto(LibraryManager.library,
 		ctxwarned:0,
 		pointerislocked:0,
 		pointerwantlock:0,
+		clipboard:"",
 		linebuffer:'',
 		localstorefailure:false,
 		w: -1,
@@ -1120,6 +1121,52 @@ mergeInto(LibraryManager.library,
 		};
 		img.crossorigin = true;
 		img.src = "data:image/png;base64," + encode64(HEAPU8.subarray(dataptr, dataptr+datasize));
+	},
+
+	Sys_Clipboard_PasteText: function(cbt, callback, ctx)
+	{
+		if (cbt != 0)
+			return;	//don't do selections.
+
+		let docallback = function(text)
+		{
+			FTEC.clipboard = text;
+			try{
+				let stringlen = (text.length*3)+1;
+				let dataptr = _malloc(stringlen);
+				stringToUTF8(text, dataptr, stringlen);
+				{{{makeDynCall('vii')}}}(callback, ctx, dataptr);
+				_free(dataptr);
+			}catch(e){
+			}
+		};
+
+		//try pasting. if it fails then use our internal string.
+		try
+		{
+			navigator.clipboard.readText()
+				.then(docallback)
+				.catch((e)=>{docallback(FTEC.clipboard)});
+		}
+		catch(e)
+		{	//clipboard API not supported at all.
+			console.log(e);	//happens in firefox. lets print it so we know WHY its failing.
+			docallback(FTEC.clipboard);	
+		}
+	},
+	Sys_SaveClipboard: function(cbt, text)
+	{
+		if (cbt != 0)
+			return;	//don't do selections.
+
+		FTEC.clipboard = UTF8ToString(text);
+
+		try
+		{
+			//try and copy it to the system clipboard too.
+			navigator.clipboard.writeText(FTEC.clipboard);
+		}
+		catch {}
 	}
 });
 
diff --git a/engine/web/sys_web.c b/engine/web/sys_web.c
index 6f18ec1d9..fdc2c9bd0 100644
--- a/engine/web/sys_web.c
+++ b/engine/web/sys_web.c
@@ -314,8 +314,7 @@ qboolean Sys_RunInstaller(void)
 }
 #endif
 
-#define SYS_CLIPBOARD_SIZE  256
-static char *clipboard_buffer;
+/*static char *clipboard_buffer;
 void Sys_Clipboard_PasteText(clipboardtype_t cbt, void (*callback)(void *cb, const char *utf8), void *ctx)
 {
 	callback(ctx, clipboard_buffer);
@@ -324,7 +323,7 @@ void Sys_SaveClipboard(clipboardtype_t cbt, const char *text)
 {
 	free(clipboard_buffer);
 	clipboard_buffer = strdup(text);
-}
+}*/
 
 #ifdef MULTITHREAD
 /* Thread creation calls */