Expose form fields as AtkObject children of the page

https://bugzilla.gnome.org/show_bug.cgi?id=728475

origin commit:
https://git.gnome.org/browse/evince/commit/?h=gnome-3-14&id=d707486

1 files changed, 241 insertions, 0 deletions

diff --git a/libview/ev-form-field-accessible.c b/libview/ev-form-field-accessible.c
new file mode 100644
index 00000000..2daeceda
--- /dev/null
+++ b/libview/ev-form-field-accessible.c
@@ -0,0 +1,241 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
+/* this file is part of atril, a mate document viewer
+ *
+ * Copyright (C) 2014 Igalia
+ * Author: Joanmarie Diggs <[email protected]>
+ *
+ * Atril is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Atril is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <config.h>
+
+#include "ev-form-field-accessible.h"
+#include "ev-view-private.h"
+
+struct _EvFormFieldAccessiblePrivate {
+	EvPageAccessible *page;
+	EvFormField      *form_field;
+	EvRectangle       area;
+};
+
+static void ev_form_field_accessible_component_iface_init (AtkComponentIface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (EvFormFieldAccessible, ev_form_field_accessible, ATK_TYPE_OBJECT,
+			 G_IMPLEMENT_INTERFACE (ATK_TYPE_COMPONENT, ev_form_field_accessible_component_iface_init))
+
+static void
+ev_form_field_accessible_get_extents (AtkComponent *atk_component,
+				      gint         *x,
+				      gint         *y,
+				      gint         *width,
+				      gint         *height,
+				      AtkCoordType coord_type)
+{
+	EvFormFieldAccessible *self;
+	EvViewAccessible *view_accessible;
+	gint page;
+	EvRectangle atk_rect;
+
+	self = EV_FORM_FIELD_ACCESSIBLE (atk_component);
+	view_accessible = ev_page_accessible_get_view_accessible (self->priv->page);
+	page = ev_page_accessible_get_page (self->priv->page);
+	_transform_doc_rect_to_atk_rect (view_accessible, page, &self->priv->area, &atk_rect, coord_type);
+	*x = atk_rect.x1;
+	*y = atk_rect.y1;
+	*width = atk_rect.x2 - atk_rect.x1;
+	*height = atk_rect.y2 - atk_rect.y1;
+}
+
+static gboolean
+ev_form_field_accessible_grab_focus (AtkComponent *atk_component)
+{
+	EvFormFieldAccessible *self;
+	EvView *view;
+
+	self = EV_FORM_FIELD_ACCESSIBLE (atk_component);
+	view = ev_page_accessible_get_view (self->priv->page);
+	_ev_view_focus_form_field (view, self->priv->form_field);
+
+	return TRUE;
+}
+
+static void
+ev_form_field_accessible_component_iface_init (AtkComponentIface *iface)
+{
+	iface->get_extents = ev_form_field_accessible_get_extents;
+	iface->grab_focus = ev_form_field_accessible_grab_focus;
+}
+
+static AtkObject *
+ev_form_field_accessible_get_parent (AtkObject *atk_object)
+{
+	EvFormFieldAccessiblePrivate *priv = EV_FORM_FIELD_ACCESSIBLE (atk_object)->priv;
+
+	return ATK_OBJECT (priv->page);
+}
+
+static AtkRole
+ev_form_field_accessible_get_role (AtkObject *atk_object)
+{
+	EvFormField *ev_form_field;
+
+	ev_form_field = EV_FORM_FIELD_ACCESSIBLE (atk_object)->priv->form_field;
+	if (EV_IS_FORM_FIELD_BUTTON (ev_form_field)) {
+		EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (ev_form_field);
+
+		switch (field_button->type) {
+		case EV_FORM_FIELD_BUTTON_CHECK:
+			return ATK_ROLE_CHECK_BOX;
+		case EV_FORM_FIELD_BUTTON_RADIO:
+			return ATK_ROLE_RADIO_BUTTON;
+		case EV_FORM_FIELD_BUTTON_PUSH:
+			return ATK_ROLE_PUSH_BUTTON;
+		default:
+			return ATK_ROLE_UNKNOWN;
+		}
+	}
+
+	if (EV_IS_FORM_FIELD_CHOICE (ev_form_field)) {
+		EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (ev_form_field);
+
+		switch (field_choice->type) {
+		case EV_FORM_FIELD_CHOICE_COMBO:
+			return ATK_ROLE_COMBO_BOX;
+		case EV_FORM_FIELD_CHOICE_LIST:
+			return ATK_ROLE_LIST_BOX;
+		default:
+			return ATK_ROLE_UNKNOWN;
+		}
+	}
+
+	if (EV_IS_FORM_FIELD_TEXT (ev_form_field)) {
+		EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (ev_form_field);
+
+		if (field_text->is_password)
+			return ATK_ROLE_PASSWORD_TEXT;
+		else if (field_text->type == EV_FORM_FIELD_TEXT_MULTILINE)
+			return ATK_ROLE_TEXT;
+		else
+			return ATK_ROLE_ENTRY;
+	}
+
+	return ATK_ROLE_UNKNOWN;
+}
+
+static AtkStateSet *
+ev_form_field_accessible_ref_state_set (AtkObject *atk_object)
+{
+	AtkStateSet *state_set;
+	AtkStateSet *copy_set;
+	AtkStateSet *page_accessible_state_set;
+	EvFormFieldAccessible *self;
+	EvFormField *ev_form_field;
+	EvViewAccessible *view_accessible;
+	gint page;
+
+	self = EV_FORM_FIELD_ACCESSIBLE (atk_object);
+	state_set = ATK_OBJECT_CLASS (ev_form_field_accessible_parent_class)->ref_state_set (atk_object);
+	atk_state_set_clear_states (state_set);
+
+	page_accessible_state_set = atk_object_ref_state_set (ATK_OBJECT (self->priv->page));
+	copy_set = atk_state_set_or_sets (state_set, page_accessible_state_set);
+
+	view_accessible = ev_page_accessible_get_view_accessible (self->priv->page);
+	page = ev_page_accessible_get_page (self->priv->page);
+	if (!ev_view_accessible_is_doc_rect_showing (view_accessible, page, &self->priv->area))
+		atk_state_set_remove_state (copy_set, ATK_STATE_SHOWING);
+
+	ev_form_field = EV_FORM_FIELD_ACCESSIBLE (atk_object)->priv->form_field;
+	if (EV_IS_FORM_FIELD_BUTTON (ev_form_field)) {
+		EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (ev_form_field);
+
+		if (field_button->state) {
+			if (field_button->type == EV_FORM_FIELD_BUTTON_PUSH)
+				atk_state_set_add_state (copy_set, ATK_STATE_PRESSED);
+			else
+				atk_state_set_add_state (copy_set, ATK_STATE_CHECKED);
+		}
+	}
+
+	else if (EV_IS_FORM_FIELD_CHOICE (ev_form_field)) {
+		EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (ev_form_field);
+
+		if (field_choice->is_editable && !ev_form_field->is_read_only)
+			atk_state_set_add_state (copy_set, ATK_STATE_EDITABLE);
+		if (field_choice->multi_select)
+			atk_state_set_add_state (copy_set, ATK_STATE_MULTISELECTABLE);
+	}
+
+	else if (EV_IS_FORM_FIELD_TEXT (ev_form_field)) {
+		EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (ev_form_field);
+
+		if (!ev_form_field->is_read_only)
+			atk_state_set_add_state (copy_set, ATK_STATE_EDITABLE);
+		if (field_text->type == EV_FORM_FIELD_TEXT_NORMAL)
+			atk_state_set_add_state (copy_set, ATK_STATE_SINGLE_LINE);
+		else if (field_text->type == EV_FORM_FIELD_TEXT_MULTILINE)
+			atk_state_set_add_state (copy_set, ATK_STATE_MULTI_LINE);
+	}
+
+	g_object_unref (state_set);
+	g_object_unref (page_accessible_state_set);
+
+	return copy_set;
+}
+
+static void
+ev_form_field_accessible_finalize (GObject *object)
+{
+	EvFormFieldAccessiblePrivate *priv = EV_FORM_FIELD_ACCESSIBLE (object)->priv;
+
+	g_object_unref (priv->form_field);
+
+	G_OBJECT_CLASS (ev_form_field_accessible_parent_class)->finalize (object);
+}
+
+static void
+ev_form_field_accessible_class_init (EvFormFieldAccessibleClass *klass)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (klass);
+	AtkObjectClass *atk_class = ATK_OBJECT_CLASS (klass);
+
+	object_class->finalize = ev_form_field_accessible_finalize;
+	atk_class->get_parent = ev_form_field_accessible_get_parent;
+	atk_class->get_role = ev_form_field_accessible_get_role;
+	atk_class->ref_state_set = ev_form_field_accessible_ref_state_set;
+
+	g_type_class_add_private (klass, sizeof (EvFormFieldAccessiblePrivate));
+}
+
+static void
+ev_form_field_accessible_init (EvFormFieldAccessible *accessible)
+{
+	accessible->priv = G_TYPE_INSTANCE_GET_PRIVATE (accessible, EV_TYPE_FORM_FIELD_ACCESSIBLE, EvFormFieldAccessiblePrivate);
+}
+
+EvFormFieldAccessible*
+ev_form_field_accessible_new (EvPageAccessible *page,
+			      EvFormField      *form_field,
+			      EvRectangle      *area)
+{
+	EvFormFieldAccessible *atk_form_field;
+
+	atk_form_field = g_object_new (EV_TYPE_FORM_FIELD_ACCESSIBLE, NULL);
+	atk_form_field->priv->page = page;
+	atk_form_field->priv->form_field = g_object_ref (form_field);
+	atk_form_field->priv->area = *area;
+
+	return EV_FORM_FIELD_ACCESSIBLE (atk_form_field);
+}