Make widget_free work on textbox and scrollbar, use widget specific free.

include/scrollbar.h

@@ -32,13 +32,6 @@ typedef struct _scrollbar
  */
 scrollbar *scrollbar_create ( short x, short y, short w, short h );
 
-/**
- * @param sb scrollbar object
- *
- * Free the resources used by the scrollbar.
- */
-void scrollbar_free ( scrollbar *sb );
-
 /**
  * @param sb scrollbar object
  * @param pos_length new length

include/textbox.h

@@ -73,13 +73,6 @@ textbox* textbox_create ( TextboxFlags flags,
                           short x, short y, short w, short h,
                           TextBoxFontType tbft,
                           const char *text );
-/**
- * @param tb  Handle to the textbox
- *
- * Free the textbox and all allocated memory.
- */
-void textbox_free ( textbox *tb );
-
 /**
  * @param tb  Handle to the textbox
  * @param tbft The style of font to render.

include/widget.h

@@ -23,7 +23,8 @@ typedef struct _Widget
     gboolean enabled;
     /** Function prototypes */
 
-    void ( *draw )( struct _Widget *tb, cairo_t *draw );
+    void ( *draw )( struct _Widget *widget, cairo_t *draw );
+    void ( *free )( struct _Widget *widget );
 } Widget;
 
 /** Macro to get widget from an implementation (e.g. textbox/scrollbar) */
@@ -61,5 +62,12 @@ void widget_enable ( Widget *widget );
  */
 void widget_draw ( Widget *widget, cairo_t *d );
 
+/**
+ * @param tb  Handle to the widget
+ *
+ * Free the widget and all allocated memory.
+ */
+void widget_free ( Widget *widget );
+
 /*@}*/
 #endif // ROFI_WIDGET_H

source/scrollbar.c

@@ -30,16 +30,19 @@
 #include "settings.h"
 
 static void scrollbar_draw ( Widget *widget, cairo_t *draw );
+static void scrollbar_free ( Widget * );
 
 scrollbar *scrollbar_create ( short x, short y, short w, short h )
 {
     scrollbar *sb = g_malloc0 ( sizeof ( scrollbar ) );
 
-    sb->widget.x    = x;
-    sb->widget.y    = y;
-    sb->widget.w    = MAX ( 1, w );
-    sb->widget.h    = MAX ( 1, h );
+    sb->widget.x = x;
+    sb->widget.y = y;
+    sb->widget.w = MAX ( 1, w );
+    sb->widget.h = MAX ( 1, h );
+
     sb->widget.draw = scrollbar_draw;
+    sb->widget.free = scrollbar_free;
 
     sb->length     = 10;
     sb->pos        = 0;
@@ -50,11 +53,10 @@ scrollbar *scrollbar_create ( short x, short y, short w, short h )
     return sb;
 }
 
-void scrollbar_free ( scrollbar *sb )
+static void scrollbar_free ( Widget *widget )
 {
-    if ( sb != NULL ) {
-        g_free ( sb );
-    }
+    scrollbar *sb = (scrollbar *) widget;
+    g_free ( sb );
 }
 
 void scrollbar_set_max_value ( scrollbar *sb, unsigned int max )

source/textbox.c

@@ -38,7 +38,8 @@
 
 #define DOT_OFFSET    15
 
-static void textbox_draw ( Widget *tb, cairo_t *draw );
+static void textbox_draw ( Widget *, cairo_t * );
+static void textbox_free ( Widget * );
 
 /**
  * Font + font color cache.
@@ -78,6 +79,7 @@ textbox* textbox_create ( TextboxFlags flags, short x, short y, short w, short h
     textbox *tb = g_slice_new0 ( textbox );
 
     tb->widget.draw = textbox_draw;
+    tb->widget.free = textbox_free;
     tb->flags       = flags;
 
     tb->widget.x = x;
@@ -243,11 +245,9 @@ void textbox_moveresize ( textbox *tb, int x, int y, int w, int h )
 }
 
 // will also unmap the window if still displayed
-void textbox_free ( textbox *tb )
+static void textbox_free ( Widget *widget  )
 {
-    if ( tb == NULL ) {
-        return;
-    }
+    textbox *tb = (textbox *) widget;
     if ( tb->blink_timeout > 0 ) {
         g_source_remove ( tb->blink_timeout );
         tb->blink_timeout = 0;

source/view.c

@@ -323,16 +323,14 @@ void rofi_view_free ( RofiViewState *state )
 {
     // Do this here?
     // Wait for final release?
-    textbox_free ( state->text );
-    textbox_free ( state->prompt_tb );
-    textbox_free ( state->case_indicator );
-    scrollbar_free ( state->scrollbar );
-    if ( state->overlay ) {
-        textbox_free ( state->overlay );
-    }
+    widget_free ( WIDGET ( state->text ) );
+    widget_free ( WIDGET ( state->prompt_tb ) );
+    widget_free ( WIDGET ( state->case_indicator ) );
+    widget_free ( WIDGET ( state->scrollbar ) );
+    widget_free ( WIDGET ( state->overlay ) );
 
     for ( unsigned int i = 0; i < state->max_elements; i++ ) {
-        textbox_free ( state->boxes[i] );
+        widget_free ( WIDGET ( state->boxes[i] ) );
     }
 
     g_free ( state->boxes );
@@ -342,7 +340,7 @@ void rofi_view_free ( RofiViewState *state )
     // When state is free'ed we should no longer need these.
     if ( config.sidebar_mode == TRUE ) {
         for ( unsigned int j = 0; j < state->num_modi; j++ ) {
-            textbox_free ( state->modi[j] );
+            widget_free ( WIDGET ( state->modi[j] ) );
             state->modi[j] = NULL;
         }
         g_free ( state->modi );
@@ -431,7 +429,7 @@ static void rofi_view_resize ( RofiViewState *state )
         state->max_elements = state->max_rows * config.menu_columns;
         // Free boxes no longer needed.
         for ( unsigned int i = state->max_elements; i < last_length; i++ ) {
-            textbox_free ( state->boxes[i] );
+            widget_free ( WIDGET ( state->boxes[i] ) );
         }
         // resize array.
         state->boxes = g_realloc ( state->boxes, state->max_elements * sizeof ( textbox* ) );

source/widget.c

@@ -50,3 +50,9 @@ void widget_draw ( Widget *widget, cairo_t *d )
         widget->draw ( widget, d );
     }
 }
+void widget_free ( Widget *widget )
+{
+    if ( widget ) {
+        widget->free ( widget );
+    }
+}

test/textbox-test.c

@@ -129,6 +129,6 @@ int main ( G_GNUC_UNUSED int argc, G_GNUC_UNUSED char **argv )
     TASSERT ( box->widget.x == 12 );
     TASSERT ( box->widget.y == 13 );
 
-    textbox_free ( box );
+    widget_free ( WIDGET ( box ) );
     textbox_cleanup ( );
 }