Some ownership for history/nav.

src/bw.cc

@@ -54,7 +54,6 @@ BrowserWindow *a_Bw_new(void)
    bws[num_bws++] = bw;
 
    /* Initialize nav_stack */
-   bw->nav_stack = dList_new(8);
    bw->nav_stack_ptr = -1;
 
    /* Init expect */
@@ -96,13 +95,6 @@ BrowserWindow::~BrowserWindow()
          dList_free(this->ImageClients);
          dList_free(this->Docs);
 
-         //for (j = 0; j < dList_length(this->PageUrls); ++j)
-            //delete reinterpret_cast< DilloUrl * >( dList_nth_data(this->PageUrls, j) );
-         //dList_free(this->PageUrls);
-
-         for (j = 0; j < dList_length(this->nav_stack); ++j)
-            dFree(dList_nth_data(this->nav_stack, j));
-         dList_free(this->nav_stack);
 
          break;
       }

src/bw.hh

@@ -29,6 +29,16 @@ extern "C++"
 #define BW_Force           (4)  /* Stop connection too */
 
 
+/*
+ * For back and forward navigation, each bw keeps an url index,
+ * and its scroll position.
+ */
+struct nav_stack_item {
+   int url_idx;
+   int posx, posy;
+};
+
+
 /** Contains the specific data for a single window */
 struct BrowserWindow {
    /** Pointer to the UI object this bw belongs to */
@@ -56,7 +66,7 @@ struct BrowserWindow {
    std::vector< std::unique_ptr< DilloUrl > > PageUrls;
 
    /** The navigation stack (holds indexes to history list) */
-   Dlist *nav_stack;
+   std::vector< std::unique_ptr< nav_stack_item > > nav_stack;
    /** 'nav_stack_ptr' refers to what's being displayed */
    int nav_stack_ptr;        /* [0 based; -1 = empty] */
    /** When the user clicks a link, the URL isn't pushed directly to history;

src/nav.cc

@@ -24,15 +24,6 @@
 #include "capi.hh"
 #include "timeout.hh"
 
-/*
- * For back and forward navigation, each bw keeps an url index,
- * and its scroll position.
- */
-typedef struct {
-   int url_idx;
-   int posx, posy;
-} nav_stack_item;
-
 
 
 /*
@@ -43,7 +34,7 @@ typedef struct {
 void a_Nav_free(BrowserWindow *bw)
 {
    a_Nav_cancel_expect(bw);
-   dFree(bw->nav_stack);
+   bw->nav_stack.clear();
 }
 
 
@@ -62,7 +53,8 @@ int a_Nav_stack_ptr(BrowserWindow *bw)
  */
 int a_Nav_get_uidx(BrowserWindow *bw, int i)
 {
-   nav_stack_item *nsi = reinterpret_cast< nav_stack_item * >( dList_nth_data (bw->nav_stack, i) );
+   if( i < 0 or i >= bw->nav_stack.size() ) return -1;
+   nav_stack_item *nsi = bw->nav_stack.at( i ).get();
    return (nsi) ? nsi->url_idx : -1;
 }
 
@@ -71,9 +63,11 @@ int a_Nav_get_uidx(BrowserWindow *bw, int i)
  */
 int a_Nav_get_top_uidx(BrowserWindow *bw)
 {
-   nav_stack_item *nsi;
+   const int top= a_Nav_stack_ptr( bw );
+   if( top < 0 or top >= bw->nav_stack.size() ) return -1;
+
+   nav_stack_item *nsi= bw->nav_stack.at( top ).get();
 
-   nsi = reinterpret_cast< nav_stack_item * >( dList_nth_data (bw->nav_stack, a_Nav_stack_ptr(bw)) );
    return (nsi) ? nsi->url_idx : -1;
 }
 
@@ -97,7 +91,7 @@ static void Nav_stack_move_ptr(BrowserWindow *bw, int offset)
  */
 int a_Nav_stack_size(BrowserWindow *bw)
 {
-   return dList_length(bw->nav_stack);
+   return bw->nav_stack.size();
 }
 
 /*
@@ -105,14 +99,10 @@ int a_Nav_stack_size(BrowserWindow *bw)
  */
 static void Nav_stack_truncate(BrowserWindow *bw, int pos)
 {
-   void *data;
-
    dReturn_if_fail (bw != NULL && pos >= 0);
 
-   while (pos < dList_length(bw->nav_stack)) {
-      data = dList_nth_data(bw->nav_stack, pos);
-      dList_remove_fast (bw->nav_stack, data);
-      dFree(data);
+   while (pos < bw->nav_stack.size()) {
+      bw->nav_stack.pop_back();
    }
 }
 
@@ -121,16 +111,14 @@ static void Nav_stack_truncate(BrowserWindow *bw, int pos)
  */
 static void Nav_stack_append(BrowserWindow *bw, int url_idx)
 {
-   nav_stack_item *nsi;
-
    dReturn_if_fail (bw != NULL);
 
    /* Insert the new element */
-   nsi = dNew(nav_stack_item, 1);
+   auto nsi = std::make_unique< nav_stack_item >(); // TODO: member init?
    nsi->url_idx = url_idx;
    nsi->posx = 0;
    nsi->posy = 0;
-   dList_append (bw->nav_stack, nsi);
+   bw->nav_stack.push_back( std::move( nsi ) );
 }
 
 /*
@@ -138,9 +126,11 @@ static void Nav_stack_append(BrowserWindow *bw, int url_idx)
  */
 static void Nav_get_scroll_pos(BrowserWindow *bw, int *posx, int *posy)
 {
-   nav_stack_item *nsi;
+   nav_stack_item *nsi= nullptr;
+   const auto where= a_Nav_stack_ptr( bw );
+   if( where >= 0 and where < bw->nav_stack.size() ) nsi= bw->nav_stack.at( where ).get();
 
-   if ((nsi = reinterpret_cast< nav_stack_item * >( dList_nth_data (bw->nav_stack, a_Nav_stack_ptr(bw)) ))) {
+   if (nsi) {
       *posx = nsi->posx;
       *posy = nsi->posy;
    } else {
@@ -153,9 +143,11 @@ static void Nav_get_scroll_pos(BrowserWindow *bw, int *posx, int *posy)
  */
 static void Nav_save_scroll_pos(BrowserWindow *bw, int idx, int posx, int posy)
 {
-   nav_stack_item *nsi;
+   nav_stack_item *nsi= nullptr;
+   const auto where= a_Nav_stack_ptr( bw );
+   if( where >= 0 and where < bw->nav_stack.size() ) nsi= bw->nav_stack.at( where ).get();
 
-   if ((nsi = reinterpret_cast< nav_stack_item * >( dList_nth_data (bw->nav_stack, idx) ))) {
+   if (nsi) {
       nsi->posx = posx;
       nsi->posy = posy;
    }
@@ -173,9 +165,7 @@ static void Nav_stack_clean(BrowserWindow *bw)
 
    if ((i = a_Nav_stack_size(bw)) >= 2 &&
        NAV_UIDX(bw,i - 2) == NAV_UIDX(bw,i - 1)) {
-      void *data = dList_nth_data (bw->nav_stack, i - 1);
-      dList_remove_fast (bw->nav_stack, data);
-      dFree(data);
+      bw->nav_stack.pop_back();
       if (bw->nav_stack_ptr >= a_Nav_stack_size(bw))
          bw->nav_stack_ptr = a_Nav_stack_size(bw) - 1;
    }