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gridview: Implement the list.select-item action

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This commit is contained in:
Benjamin Otte 2019-10-19 21:32:56 +02:00 committed by Matthias Clasen
parent cb2948eda6
commit cc68073af0
1 changed files with 66 additions and 0 deletions
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66
gtk/gtkgridview.c
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@ -76,6 +76,8 @@ struct _GtkGridView
double anchor_yalign;
guint anchor_xstart : 1;
guint anchor_ystart : 1;
/* the last item that was selected - basically the location to extend selections from */
GtkListItemTracker *selected;
};
struct _Cell
@ -369,6 +371,25 @@ gtk_grid_view_set_anchor (GtkGridView *self,
}
}
static void
gtk_grid_view_select_item (GtkGridView *self,
guint pos,
gboolean modify,
gboolean extend)
{
if (gtk_selection_model_user_select_item (gtk_list_item_manager_get_model (self->item_manager),
pos,
modify,
extend ? gtk_list_item_tracker_get_position (self->item_manager, self->selected)
: GTK_INVALID_LIST_POSITION))
{
gtk_list_item_tracker_set_position (self->item_manager,
self->selected,
pos,
0, 0);
}
}
static gboolean
gtk_grid_view_adjustment_is_flipped (GtkGridView *self,
GtkOrientation orientation)
@ -1007,6 +1028,11 @@ gtk_grid_view_dispose (GObject *object)
gtk_list_item_tracker_free (self->item_manager, self->anchor);
self->anchor = NULL;
}
if (self->selected)
{
gtk_list_item_tracker_free (self->item_manager, self->selected);
self->selected = NULL;
}
g_clear_object (&self->item_manager);
G_OBJECT_CLASS (gtk_grid_view_parent_class)->dispose (object);
@ -1166,6 +1192,20 @@ gtk_grid_view_set_property (GObject *object,
}
}
static void
gtk_grid_view_select_item_action (GtkWidget *widget,
const char *action_name,
GVariant *parameter)
{
GtkGridView *self = GTK_GRID_VIEW (widget);
guint pos;
gboolean modify, extend;
g_variant_get (parameter, "(ubb)", &pos, &modify, &extend);
gtk_grid_view_select_item (self, pos, modify, extend);
}
static void
gtk_grid_view_class_init (GtkGridViewClass *klass)
{
@ -1263,6 +1303,29 @@ gtk_grid_view_class_init (GtkGridViewClass *klass)
g_object_class_install_properties (gobject_class, N_PROPS, properties);
/**
* GtkGridView|list.select-item:
* @position: position of item to select
* @modify: %TRUE to toggle the existing selection, %FALSE to select
* @extend: %TRUE to extend the selection
*
* Changes selection.
*
* If @extend is %TRUE and the model supports selecting ranges, the
* affected items are all items from the last selected item to the item
* in @position.
* If @extend is %FALSE or selecting ranges is not supported, only the
* item in @position is affected.
*
* If @modify is %TRUE, the affected items will be set to the same state.
* If @modify is %FALSE, the affected items will be selected and
* all other items will be deselected.
*/
gtk_widget_class_install_action (widget_class,
"list.select-item",
"(ubb)",
gtk_grid_view_select_item_action);
gtk_widget_class_set_css_name (widget_class, I_("flowbox"));
}
@ -1301,6 +1364,9 @@ gtk_grid_view_init (GtkGridView *self)
{
self->item_manager = gtk_list_item_manager_new (GTK_WIDGET (self), "flowboxchild", Cell, CellAugment, cell_augment);
self->anchor = gtk_list_item_tracker_new (self->item_manager);
self->anchor_xstart = TRUE;
self->anchor_ystart = TRUE;
self->selected = gtk_list_item_tracker_new (self->item_manager);
self->min_columns = 1;
self->max_columns = DEFAULT_MAX_COLUMNS;