Initial history implementation. Needs work.

[evince.git] / shell / ev-view.c

diff --git a/shell/ev-view.c b/shell/ev-view.c
index 0848c965cd344929fa702d412a39a8f4e8ac8808..678770bd41563716178368680dc1d45e3b854c5c 100644 (file)
--- a/shell/ev-view.c
+++ b/shell/ev-view.c
@@ -28,6 +28,7 @@
 #include "ev-marshal.h"
 #include "ev-view.h"
 #include "ev-document-find.h"
+#include "ev-history.h"
 
 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
@@ -52,6 +53,7 @@ struct _EvView {
        GtkWidget parent_instance;
 
        EvDocument *document;
+       EvHistory  *history;
        
        GdkWindow *bin_window;
        
@@ -91,7 +93,7 @@ static guint page_changed_signal = 0;
 static void ev_view_set_scroll_adjustments (EvView         *view,
                                            GtkAdjustment  *hadjustment,
                                            GtkAdjustment  *vadjustment);
-     
+    
 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 
 /*** Helper functions ***/       
@@ -168,6 +170,9 @@ ev_view_finalize (GObject *object)
        if (view->document)
                g_object_unref (view->document);
 
+       if (view->history)
+               g_object_unref (view->history);
+
        ev_view_set_scroll_adjustments (view, NULL, NULL);
 
         g_array_free (view->find_results, TRUE);
@@ -900,12 +905,16 @@ ev_view_set_document (EvView     *view,
                
                if (old_page != ev_view_get_page (view))
                        g_signal_emit (view, page_changed_signal, 0);
+
+               if (view->history) {
+                       g_object_unref (view->history);
+               }
+               view->history = ev_history_new ();
        }
 }
 
-void
-ev_view_set_page (EvView *view,
-                 int     page)
+static void
+set_document_page (EvView *view, int page)
 {
        if (view->document) {
                int old_page = ev_document_get_page (view->document);
@@ -920,6 +929,80 @@ ev_view_set_page (EvView *view,
        }
 }
 
+static void
+go_to_bookmark (EvView *view, EvBookmark *bookmark)
+{
+       EvBookmarkType type;
+       int page;
+
+       type = ev_bookmark_get_bookmark_type (bookmark);
+
+       if (type == EV_BOOKMARK_TYPE_LINK) {
+               page = ev_bookmark_get_page (bookmark);
+               set_document_page (view, page);
+       }
+}
+
+void
+ev_view_go_to_bookmark (EvView *view, EvBookmark *bookmark)
+{
+       go_to_bookmark (view, bookmark);
+       ev_history_add_link (view->history, bookmark);
+}
+
+static void
+go_to_index (EvView *view, int index)
+{
+       EvBookmark *bookmark;
+       
+       bookmark = ev_history_get_link_nth (view->history, index);
+       g_return_if_fail (bookmark != NULL);
+
+       go_to_bookmark (view, bookmark);
+}
+
+void
+ev_view_go_back        (EvView *view)
+{
+       int index;
+
+       g_return_if_fail (EV_IS_HISTORY (view->history));
+
+       index = ev_history_get_current_index (view->history);
+       index = MAX (0, index - 1);
+
+       ev_history_set_current_index (view->history, index);
+       go_to_index (view, index);
+}
+
+void
+ev_view_go_forward (EvView *view)
+{
+       int index, n;
+
+       g_return_if_fail (EV_IS_HISTORY (view->history));
+
+       index = ev_history_get_current_index (view->history);
+       n = ev_history_get_n_links (view->history);
+
+       index = MIN (n - 1, index + 1);
+
+       ev_history_set_current_index (view->history, index);
+       go_to_index (view, index);
+}
+
+
+void
+ev_view_set_page (EvView *view,
+                 int     page)
+{
+       g_return_if_fail (EV_IS_VIEW (view));
+       g_return_if_fail (EV_IS_HISTORY (view->history));
+
+       set_document_page (view, page);
+       ev_history_add_page (view->history, page);
+}
+
 int
 ev_view_get_page (EvView *view)
 {