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a11y: Check whether a widget is mapped before querying its parent

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Call gtk_widget_get_mapped() in a couple of places before looking at the
widget's parent, since it might be set to a widget that has been
finalized, causing an invalid read.
This commit is contained in:
Mike Gorse 2013-08-30 09:13:39 -05:00
parent d7e07a8470
commit 7e3db6fdd3
1 changed files with 10 additions and 4 deletions
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14
gtk/a11y/gtkwidgetaccessible.c
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@ -174,6 +174,9 @@ gtk_widget_accessible_get_parent (AtkObject *accessible)
if (parent != NULL)
return parent;
if (!gtk_widget_get_mapped (widget))
return NULL;
parent_widget = gtk_widget_get_parent (widget);
if (parent_widget == NULL)
return NULL;
@ -237,7 +240,7 @@ find_label (GtkWidget *widget)
temp_widget = label;
while (temp_widget)
{
if (temp_widget == widget)
if (temp_widget == widget || !gtk_widget_get_mapped (temp_widget))
{
label = NULL;
break;
@ -271,7 +274,7 @@ gtk_widget_accessible_ref_relation_set (AtkObject *obj)
label = find_label (widget);
if (label == NULL)
{
if (GTK_IS_BUTTON (widget))
if (GTK_IS_BUTTON (widget) && gtk_widget_get_mapped (widget))
/*
* Handle the case where GnomeIconEntry is the mnemonic widget.
* The GtkButton which is a grandchild of the GnomeIconEntry
@ -293,7 +296,7 @@ gtk_widget_accessible_ref_relation_set (AtkObject *obj)
}
}
}
else if (GTK_IS_COMBO_BOX (widget))
else if (GTK_IS_COMBO_BOX (widget) && gtk_widget_get_mapped (widget))
/*
* Handle the case when GtkFileChooserButton is the mnemonic
* widget. The GtkComboBox which is a child of the
@ -440,7 +443,7 @@ gtk_widget_accessible_get_index_in_parent (AtkObject *accessible)
}
}
if (!GTK_IS_WIDGET (widget))
if (!GTK_IS_WIDGET (widget) || !gtk_widget_get_mapped (widget))
return -1;
parent_widget = gtk_widget_get_parent (widget);
if (!GTK_IS_CONTAINER (parent_widget))
@ -781,6 +784,9 @@ gtk_widget_accessible_on_screen (GtkWidget *widget)
gtk_widget_get_allocation (widget, &allocation);
if (!gtk_widget_get_mapped (widget))
return FALSE;
viewport = gtk_widget_get_ancestor (widget, GTK_TYPE_VIEWPORT);
if (viewport)
{