patch 8.0.1309: cannot use 'balloonexpr' in a terminalv8.0.1309

Problem:    Cannot use 'balloonexpr' in a terminal.
Solution:   Add 'balloonevalterm' and add code to handle mouse movements in a
            terminal. Initial implementation for Unix with GUI.

1 files changed, 51 insertions, 14 deletions

diff --git a/src/os_unix.c b/src/os_unix.c
index d2f080529..1c2a90276 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -3564,16 +3564,25 @@ get_tty_info(int fd, ttyinfo_T *info)
 #endif /* VMS  */
 
 #if defined(FEAT_MOUSE_TTY) || defined(PROTO)
+static int	mouse_ison = FALSE;
+
 /*
  * Set mouse clicks on or off.
  */
     void
 mch_setmouse(int on)
 {
-    static int	ison = FALSE;
+# ifdef FEAT_BEVALTERM
+    static int	bevalterm_ison = FALSE;
+# endif
     int		xterm_mouse_vers;
 
-    if (on == ison)	/* return quickly if nothing to do */
+    if (on == mouse_ison
+# ifdef FEAT_BEVALTERM
+	    && p_bevalterm == bevalterm_ison
+# endif
+	    )
+	/* return quickly if nothing to do */
 	return;
 
     xterm_mouse_vers = use_xterm_mouse();
@@ -3585,18 +3594,30 @@ mch_setmouse(int on)
 		   (on
 		   ? IF_EB("\033[?1015h", ESC_STR "[?1015h")
 		   : IF_EB("\033[?1015l", ESC_STR "[?1015l")));
-	ison = on;
+	mouse_ison = on;
     }
 # endif
 
 # ifdef FEAT_MOUSE_SGR
     if (ttym_flags == TTYM_SGR)
     {
+	/* SGR mode supports columns above 223 */
 	out_str_nf((char_u *)
 		   (on
 		   ? IF_EB("\033[?1006h", ESC_STR "[?1006h")
 		   : IF_EB("\033[?1006l", ESC_STR "[?1006l")));
-	ison = on;
+	mouse_ison = on;
+    }
+# endif
+
+# ifdef FEAT_BEVALTERM
+    if (bevalterm_ison != (p_bevalterm && on))
+    {
+	bevalterm_ison = (p_bevalterm && on);
+	if (xterm_mouse_vers > 1 && !bevalterm_ison)
+	    /* disable mouse movement events, enabling is below */
+	    out_str_nf((char_u *)
+			(IF_EB("\033[?1003l", ESC_STR "[?1003l")));
     }
 # endif
 
@@ -3605,14 +3626,19 @@ mch_setmouse(int on)
 	if (on)	/* enable mouse events, use mouse tracking if available */
 	    out_str_nf((char_u *)
 		       (xterm_mouse_vers > 1
-			? IF_EB("\033[?1002h", ESC_STR "[?1002h")
+			? (
+# ifdef FEAT_BEVALTERM
+			    bevalterm_ison
+			       ? IF_EB("\033[?1003h", ESC_STR "[?1003h") :
+# endif
+			      IF_EB("\033[?1002h", ESC_STR "[?1002h"))
 			: IF_EB("\033[?1000h", ESC_STR "[?1000h")));
 	else	/* disable mouse events, could probably always send the same */
 	    out_str_nf((char_u *)
 		       (xterm_mouse_vers > 1
 			? IF_EB("\033[?1002l", ESC_STR "[?1002l")
 			: IF_EB("\033[?1000l", ESC_STR "[?1000l")));
-	ison = on;
+	mouse_ison = on;
     }
 
 # ifdef FEAT_MOUSE_DEC
@@ -3622,7 +3648,7 @@ mch_setmouse(int on)
 	    out_str_nf((char_u *)"\033[1;2'z\033[1;3'{");
 	else	/* disable mouse events */
 	    out_str_nf((char_u *)"\033['z");
-	ison = on;
+	mouse_ison = on;
     }
 # endif
 
@@ -3632,12 +3658,12 @@ mch_setmouse(int on)
 	if (on)
 	{
 	    if (gpm_open())
-		ison = TRUE;
+		mouse_ison = TRUE;
 	}
 	else
 	{
 	    gpm_close();
-	    ison = FALSE;
+	    mouse_ison = FALSE;
 	}
     }
 # endif
@@ -3648,12 +3674,12 @@ mch_setmouse(int on)
 	if (on)
 	{
 	    if (sysmouse_open() == OK)
-		ison = TRUE;
+		mouse_ison = TRUE;
 	}
 	else
 	{
 	    sysmouse_close();
-	    ison = FALSE;
+	    mouse_ison = FALSE;
 	}
     }
 # endif
@@ -3686,13 +3712,13 @@ mch_setmouse(int on)
 	    out_str_nf((char_u *)IF_EB("\033[0~ZwLMRK+1Q\033\\",
 					ESC_STR "[0~ZwLMRK+1Q" ESC_STR "\\"));
 #  endif
-	    ison = TRUE;
+	    mouse_ison = TRUE;
 	}
 	else
 	{
 	    out_str_nf((char_u *)IF_EB("\033[0~ZwQ\033\\",
 					      ESC_STR "[0~ZwQ" ESC_STR "\\"));
-	    ison = FALSE;
+	    mouse_ison = FALSE;
 	}
     }
 # endif
@@ -3704,11 +3730,22 @@ mch_setmouse(int on)
 	    out_str_nf("\033[>1h\033[>6h\033[>7h\033[>1h\033[>9l");
 	else
 	    out_str_nf("\033[>1l\033[>6l\033[>7l\033[>1l\033[>9h");
-	ison = on;
+	mouse_ison = on;
     }
 # endif
 }
 
+#if defined(FEAT_BEVALTERM) || defined(PROTO)
+/*
+ * Called when 'balloonevalterm' changed.
+ */
+    void
+mch_bevalterm_changed(void)
+{
+    mch_setmouse(mouse_ison);
+}
+#endif
+
 /*
  * Set the mouse termcode, depending on the 'term' and 'ttymouse' options.
  */