don't update display until listbox has been drawn at least once

diff --git a/listbox.c b/listbox.c
index 801b67b6eb00ff4457cfee79ad95d45c6ed79f0b..0d2e3455f0b30b307ae61e5caa49c98a1f36687d 100644 (file)
--- a/listbox.c
+++ b/listbox.c
@@ -36,6 +36,7 @@ struct listbox {
     int grow;
     int flags; /* flags for this listbox, right now just
                  NEWT_FLAG_RETURNEXIT */
+    int beenDisplayed;
 };
 
 static void listboxDraw(newtComponent co);
@@ -79,6 +80,7 @@ newtComponent newtListbox(int left, int top, int height, int flags) {
     li->numSelected = 0;
     li->isActive = 0;
     li->userHasSetWidth = 0;
+    li->beenDisplayed = 0;
     li->startShowItem = 0;
     li->flags = flags & (NEWT_FLAG_RETURNEXIT|NEWT_FLAG_DOBORDER|NEWT_FLAG_MULTIPLE);
 
@@ -138,7 +140,7 @@ newtListboxRealSetCurrent(newtComponent co)
     struct listbox * li = co->data;
     if(li->sb)
        newtScrollbarSet(li->sb, li->currItem + 1, li->numItems);
-    listboxDraw(co);
+    if (li->beenDisplayed) listboxDraw(co);
     if(co->callback) co->callback(co, co->callbackData);
 }
 
@@ -149,7 +151,7 @@ void newtListboxSetWidth(newtComponent co , int width) {
     li->curWidth = co->width - li->sbAdjust;
     li->userHasSetWidth = 1;
     li->sb->left = co->width + co->left - 1;
-    listboxDraw(co);
+    if (li->beenDisplayed) listboxDraw(co);
 }
 
 void * newtListboxGetCurrent(newtComponent co) {
@@ -190,7 +192,7 @@ void newtListboxSelectItem(newtComponent co, int item,
                        iitem->isSelected = !iitem->isSelected;
        }
     }
-    listboxDraw(co);
+    if (li->beenDisplayed) listboxDraw(co);
 }
 
 void newtListboxClearSelection(newtComponent co)
@@ -202,7 +204,7 @@ void newtListboxClearSelection(newtComponent co)
        item = item->next)
        item->isSelected = 0;
     li->numSelected = 0;
-    listboxDraw(co);
+    if (li->beenDisplayed) listboxDraw(co);
 }
 
 /* Free the returned array after use, but NOT the values in the array */
@@ -250,7 +252,7 @@ void newtListboxSetText(newtComponent co, int num, const char * text) {
     }
 
     if (num >= li->startShowItem && num <= li->startShowItem + co->height)
-       listboxDraw(co);
+       if (li->beenDisplayed) listboxDraw(co);
 }
 
 void newtListboxSetEntry(newtComponent co, int num, const char * text) {
@@ -339,7 +341,7 @@ int newtListboxInsertEntry(newtComponent co, const char * text,
        co->width = li->curWidth + li->sbAdjust;
     li->numItems++;
 
-    listboxDraw(co);
+    if (li->beenDisplayed) listboxDraw(co);
 
     return li->numItems;
 }
@@ -390,7 +392,7 @@ int newtListboxDeleteEntry(newtComponent co, int num) {
                li->sb->left = co->left + co->width - 1;
     }
 
-    listboxDraw(co);
+    if (li->beenDisplayed) listboxDraw(co);
 
     return li->numItems;
 }
@@ -449,6 +451,8 @@ static void listboxDraw(newtComponent co)
     struct items *item;
     int i, j;
 
+    li->beenDisplayed = 1;
+
     if(li->sb)
        li->sb->ops->draw(li->sb);