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a11y: using pseudo_class to set a CHECKED state

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https://bugzilla.gnome.org/show_bug.cgi?id=668361
This commit is contained in:
Alejandro Piñeiro 2012-01-20 16:55:46 +01:00
parent e37574510e
commit 72c486cb3e
1 changed files with 30 additions and 13 deletions
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39
src/st/st-widget.c
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@ -2185,7 +2185,7 @@ static void on_can_focus_notify (GObject *gobject,
static void on_label_notify (GObject *gobject,
GParamSpec *pspec,
gpointer data);
static void check_selected (StWidgetAccessible *self,
static void check_pseudo_class (StWidgetAccessible *self,
StWidget *widget);
static void check_labels (StWidgetAccessible *self,
StWidget *widget);
@ -2200,6 +2200,7 @@ struct _StWidgetAccessiblePrivate
{
/* Cached values (used to avoid extra notifications) */
gboolean selected;
gboolean checked;
/* The current_label. Right now there are the proper atk
* relationships between this object and the label
@ -2287,7 +2288,7 @@ st_widget_accessible_initialize (AtkObject *obj,
* Ie: it is required to ensure a first notification when Alt+Tab
* popup appears
*/
check_selected (ST_WIDGET_ACCESSIBLE (obj), ST_WIDGET (data));
check_pseudo_class (ST_WIDGET_ACCESSIBLE (obj), ST_WIDGET (data));
check_labels (ST_WIDGET_ACCESSIBLE (obj), ST_WIDGET (data));
}
@ -2315,6 +2316,9 @@ st_widget_accessible_ref_state_set (AtkObject *obj)
if (self->priv->selected)
atk_state_set_add_state (result, ATK_STATE_SELECTED);
if (self->priv->checked)
atk_state_set_add_state (result, ATK_STATE_CHECKED);
/* On clutter there isn't any tip to know if a actor is focusable or
* not, anyone can receive the key_focus. For this reason
* cally_actor sets any actor as FOCUSABLE. This is not the case on
@ -2334,26 +2338,29 @@ on_pseudo_class_notify (GObject *gobject,
GParamSpec *pspec,
gpointer data)
{
check_selected (ST_WIDGET_ACCESSIBLE (data),
check_pseudo_class (ST_WIDGET_ACCESSIBLE (data),
ST_WIDGET (gobject));
}
/*
* This method checks if the widget is selected, and notify a atk
* state change if required
* In some cases the only way to check some states are checking the
* pseudo-class. Like if the object is selected (see bug 637830) or if
* the object is toggled. This method also notifies a state change if
* the value is different to the one cached.
*
* In order to decide if there was a selection, we use the current
* pseudo-class of the widget searching for "selected", the current
* homogeneus way to check if a item is selected (see bug 637830)
* We also assume that if the object uses that pseudo-class, it makes
* sense to notify that state change. It would be possible to refine
* that behaviour checking the role (ie: notify CHECKED changes only
* for CHECK_BUTTON roles).
*
* In a ideal world we would have a more standard way to check if the
* item is selected or not, like the widget-context (as in the case of
* In a ideal world we would have a more standard way to get the
* state, like the widget-context (as in the case of
* gtktreeview-cells), or something like the property "can-focus". But
* for the moment this is enough, and we can update that in the future
* if required.
*/
static void
check_selected (StWidgetAccessible *self,
check_pseudo_class (StWidgetAccessible *self,
StWidget *widget)
{
gboolean found = FALSE;
@ -2368,6 +2375,16 @@ check_selected (StWidgetAccessible *self,
ATK_STATE_SELECTED,
found);
}
found = st_widget_has_style_pseudo_class (widget,
"checked");
if (found != self->priv->checked)
{
self->priv->checked = found;
atk_object_notify_state_change (ATK_OBJECT (self),
ATK_STATE_CHECKED,
found);
}
}
static void