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authormbkma <[email protected]>2020-05-31 01:04:31 +0200
committerRobert Antoni Buj Gelonch <[email protected]>2020-07-13 22:25:30 +0200
commitf649f841b919cf2fa5c40f7d8b1bf1dd61300a81 (patch)
tree81457fb376b8be5baf30448eb919d968fe5a5b40 /src/math-history.c
parente6206b2c8a4123be75b1f4a7b811d91136e667e5 (diff)
downloadmate-calc-f649f841b919cf2fa5c40f7d8b1bf1dd61300a81.tar.bz2
mate-calc-f649f841b919cf2fa5c40f7d8b1bf1dd61300a81.tar.xz
Implement navigation through history stack equations using keyboard
Diffstat (limited to 'src/math-history.c')
-rw-r--r--src/math-history.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/src/math-history.c b/src/math-history.c
index 49d63a2..403a04f 100644
--- a/src/math-history.c
+++ b/src/math-history.c
@@ -22,6 +22,7 @@ struct MathHistoryPrivate
gchar *last_answer;
gchar *last_equation;
+ int current; /* 0 is the first entry, rows-1 the most recent entry */
int rows;
GtkWidget *listbox;
};
@@ -82,6 +83,7 @@ math_history_insert_entry (MathHistory *history, char *equation, MPNumber *answe
history->priv->last_answer = g_strdup(answer_nine_digits);
history->priv->last_equation = g_strdup(equation);
history->priv->rows++;
+ history->priv->current = history->priv->rows;
g_signal_emit_by_name(history, "row-added");
g_free(answer_four_digits);
@@ -94,12 +96,33 @@ math_history_clear(MathHistory *history)
GList *children, *iter;
history->priv->rows = 0;
+ history->priv->current = 0;
children = gtk_container_get_children(GTK_CONTAINER(history->priv->listbox));
for (iter = children; iter != NULL; iter = g_list_next(iter))
gtk_widget_destroy(GTK_WIDGET(iter->data));
g_list_free(children);
}
+gpointer
+math_history_get_entry_at(MathHistory *history, int index)
+{
+ if (index >= 0 && index < history->priv->rows)
+ return MATH_HISTORY_ENTRY(gtk_list_box_get_row_at_index(GTK_LIST_BOX(history->priv->listbox), index));
+ return NULL;
+}
+
+void
+math_history_set_current(MathHistory *history, int value)
+{
+ history->priv->current = CLAMP (history->priv->current + value, 0, history->priv->rows - 1);
+}
+
+int
+math_history_get_current(MathHistory *history)
+{
+ return history->priv->current;
+}
+
static void
math_history_class_init(MathHistoryClass *klass)
{
@@ -124,6 +147,7 @@ math_history_init(MathHistory *history)
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(history), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
gtk_scrolled_window_set_placement(GTK_SCROLLED_WINDOW(history), GTK_CORNER_TOP_LEFT);
+ history->priv->current = 0;
history->priv->rows = 0;
history->priv->last_answer = g_strdup("");
history->priv->last_equation = g_strdup("");