From 6562cdabc26860a9e62b5d6016b4b677e4ffe5d8 Mon Sep 17 00:00:00 2001
From: Gustavo Sverzut Barbieri <barbieri@profusion.mobi>
Date: Fri, 1 Nov 2013 16:43:30 -0200
Subject: [PATCH] termio: allow monitoring if selection exists.

Export new termio_selection_exists() and two signals: "selection,on"
and "selection,off". These will be used to control the state of the
"copy" button and menus (when those exist).
---
 src/bin/termio.c | 40 ++++++++++++++++++++++++++++++----------
 src/bin/termio.h |  2 ++
 2 files changed, 32 insertions(+), 10 deletions(-)

diff --git a/src/bin/termio.c b/src/bin/termio.c
index d54d4963..f70b3a77 100644
--- a/src/bin/termio.c
+++ b/src/bin/termio.c
@@ -103,6 +103,18 @@ static void _smart_calculate(Evas_Object *obj);
 static void _smart_mirror_del(void *data, Evas *evas EINA_UNUSED, Evas_Object *obj, void *info EINA_UNUSED);
 static void _lost_selection(void *data, Elm_Sel_Type selection);
 
+static void
+_sel_set(Evas_Object *obj, Eina_Bool enable)
+{
+   Termio *sd = evas_object_smart_data_get(obj);
+   if (sd->cur.sel == enable) return;
+   sd->cur.sel = enable;
+   if (enable)
+     evas_object_smart_callback_call(obj, "selection,on", NULL);
+   else
+     evas_object_smart_callback_call(obj, "selection,off", NULL);
+}
+
 static inline Eina_Bool
 _should_inline(const Evas_Object *obj)
 {
@@ -1674,7 +1686,7 @@ _lost_selection(void *data, Elm_Sel_Type selection)
                   eina_stringshare_del(sd->sel_str);
                   sd->sel_str = NULL;
                }
-             sd->cur.sel = 0;
+             _sel_set(obj, EINA_FALSE);
              elm_object_cnp_selection_clear(sd->win, selection);
              _smart_update_queue(obj, sd);
              sd->have_sel = EINA_FALSE;
@@ -2281,7 +2293,7 @@ _sel_line(Evas_Object *obj, int cx EINA_UNUSED, int cy)
 
    termpty_cellcomp_freeze(sd->pty);
 
-   sd->cur.sel = 1;
+   _sel_set(obj, EINA_TRUE);
    sd->cur.makesel = 0;
    sd->cur.sel1.x = 0;
    sd->cur.sel1.y = cy;
@@ -2343,7 +2355,7 @@ _sel_word(Evas_Object *obj, int cx, int cy)
 
    termpty_cellcomp_freeze(sd->pty);
 
-   sd->cur.sel = 1;
+   _sel_set(obj, EINA_TRUE);
    sd->cur.makesel = 0;
    sd->cur.sel1.x = cx;
    sd->cur.sel1.y = cy;
@@ -2968,7 +2980,7 @@ _smart_cb_mouse_down(void *data, Evas *e EINA_UNUSED, Evas_Object *obj EINA_UNUS
           {
              if (evas_key_modifier_is_set(ev->modifiers, "Shift") && sd->backup.sel)
                {
-                  sd->cur.sel = 1;
+                  _sel_set(data, EINA_TRUE);
                   sd->cur.sel1.x = sd->backup.sel1.x;
                   sd->cur.sel1.y = sd->backup.sel1.y;
                   sd->cur.sel2.x = sd->backup.sel2.x;
@@ -2996,7 +3008,7 @@ _smart_cb_mouse_down(void *data, Evas *e EINA_UNUSED, Evas_Object *obj EINA_UNUS
                   sd->cur.sel1.y = cy - sd->scroll;
                   sd->cur.sel2.x = cx;
                   sd->cur.sel2.y = cy - sd->scroll;
-                  sd->cur.sel = EINA_TRUE;
+                  _sel_set(data, EINA_TRUE);
                   sd->cur.makesel = EINA_TRUE;
                   sd->boxsel = EINA_TRUE;
 #if defined(SUPPORT_DBLWIDTH)
@@ -3006,7 +3018,7 @@ _smart_cb_mouse_down(void *data, Evas *e EINA_UNUSED, Evas_Object *obj EINA_UNUS
              if (sd->top_left || sd->bottom_right)
                {
                   sd->cur.makesel = 1;
-                  sd->cur.sel = 1;
+                  _sel_set(data, EINA_TRUE);
                   if (sd->top_left)
                     {
                        sd->cur.sel1.x = cx;
@@ -3025,7 +3037,7 @@ _smart_cb_mouse_down(void *data, Evas *e EINA_UNUSED, Evas_Object *obj EINA_UNUS
                {
                   if (sd->cur.sel)
                     {
-                       sd->cur.sel = 0;
+                       _sel_set(data, EINA_FALSE);
                        sd->didclick = EINA_TRUE;
                     }
                   sd->cur.makesel = 1;
@@ -3124,7 +3136,7 @@ _smart_cb_mouse_move(void *data, Evas *e EINA_UNUSED, Evas_Object *obj EINA_UNUS
    if (sd->link.down.dnd)
      {
         sd->cur.makesel = 0;
-        sd->cur.sel = 0;
+        _sel_set(data, EINA_FALSE);
         _smart_update_queue(data, sd);
         return;
      }
@@ -3134,7 +3146,7 @@ _smart_cb_mouse_move(void *data, Evas *e EINA_UNUSED, Evas_Object *obj EINA_UNUS
           {
              if ((cx != sd->cur.sel1.x) ||
                  ((cy - sd->scroll) != sd->cur.sel1.y))
-               sd->cur.sel = 1;
+               _sel_set(data, EINA_TRUE);
           }
         if (sd->top_left)
           {
@@ -3797,7 +3809,7 @@ _smart_pty_cancel_sel(void *data)
    if (!sd) return;
    if (sd->cur.sel)
      {
-        sd->cur.sel = 0;
+        _sel_set(obj, EINA_FALSE);
         sd->cur.makesel = 0;
         _smart_update_queue(data, sd);
      }
@@ -4629,3 +4641,11 @@ termio_debugwhite_set(Evas_Object *obj, Eina_Bool dbg)
    sd->debugwhite = dbg;
    _smart_apply(obj);
 }
+
+Eina_Bool
+termio_selection_exists(const Evas_Object *obj)
+{
+   Termio *sd = evas_object_smart_data_get(obj);
+   EINA_SAFETY_ON_NULL_RETURN_VAL(sd, EINA_FALSE);
+   return sd->cur.sel;
+}
diff --git a/src/bin/termio.h b/src/bin/termio.h
index 934abf95..817bc87d 100644
--- a/src/bin/termio.h
+++ b/src/bin/termio.h
@@ -11,6 +11,8 @@ Evas_Object *termio_theme_get(Evas_Object *obj);
 char        *termio_selection_get(Evas_Object *obj,
                                   int c1x, int c1y, int c2x, int c2y,
                                   size_t *len);
+Eina_Bool    termio_selection_exists(const Evas_Object *obj);
+
 void         termio_config_update(Evas_Object *obj);
 Config      *termio_config_get(const Evas_Object *obj);
 void         termio_copy_clipboard(Evas_Object *obj);