2 * Copyright (C) 2010 Igalia S.L.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
21 #include "WebKitAccessibleHyperlink.h"
23 #if HAVE(ACCESSIBILITY)
25 #include "AXObjectCache.h"
26 #include "AccessibilityObject.h"
27 #include "AccessibilityObjectWrapperAtk.h"
28 #include "NotImplemented.h"
31 #include "RenderListMarker.h"
32 #include "RenderObject.h"
33 #include "TextIterator.h"
34 #include "htmlediting.h"
39 using namespace WebCore;
41 struct _WebKitAccessibleHyperlinkPrivate {
42 WebKitAccessible* hyperlinkImpl;
45 #define WEBKIT_ACCESSIBLE_HYPERLINK_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE((obj), WEBKIT_TYPE_ACCESSIBLE_HYPERLINK, WebKitAccessibleHyperlinkPrivate))
53 static gpointer webkitAccessibleHyperlinkParentClass = 0;
55 // Used to provide const char* returns.
56 static const char* returnString(const String& str)
58 static CString returnedString;
59 returnedString = str.utf8();
60 return returnedString.data();
63 static AccessibilityObject* core(WebKitAccessible* accessible)
65 if (!accessible || !WEBKIT_IS_ACCESSIBLE(accessible))
68 return webkit_accessible_get_accessibility_object(accessible);
71 static AccessibilityObject* core(WebKitAccessibleHyperlink* link)
76 return core(link->priv->hyperlinkImpl);
79 static AccessibilityObject* core(AtkHyperlink* link)
81 if (!WEBKIT_IS_ACCESSIBLE_HYPERLINK(link))
84 return core(WEBKIT_ACCESSIBLE_HYPERLINK(link));
87 static AccessibilityObject* core(AtkAction* action)
89 return core(WEBKIT_ACCESSIBLE_HYPERLINK(action));
93 static gboolean webkitAccessibleHyperlinkActionDoAction(AtkAction* action, gint index)
95 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), FALSE);
96 g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, FALSE);
97 g_return_val_if_fail(!index, FALSE);
99 if (!ATK_IS_ACTION(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl))
102 AccessibilityObject* coreObject = core(action);
106 return coreObject->performDefaultAction();
109 static gint webkitAccessibleHyperlinkActionGetNActions(AtkAction* action)
111 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0);
112 g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);
114 if (!ATK_IS_ACTION(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl))
120 static const gchar* webkitAccessibleHyperlinkActionGetDescription(AtkAction* action, gint index)
122 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0);
123 g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);
124 g_return_val_if_fail(!index, 0);
126 // TODO: Need a way to provide/localize action descriptions.
131 static const gchar* webkitAccessibleHyperlinkActionGetKeybinding(AtkAction* action, gint index)
133 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0);
134 g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);
135 g_return_val_if_fail(!index, 0);
137 if (!ATK_IS_ACTION(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl))
140 AccessibilityObject* coreObject = core(action);
144 return returnString(coreObject->accessKey().string());
147 static const gchar* webkitAccessibleHyperlinkActionGetName(AtkAction* action, gint index)
149 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0);
150 g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);
151 g_return_val_if_fail(!index, 0);
153 if (!ATK_IS_ACTION(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl))
156 AccessibilityObject* coreObject = core(action);
160 return returnString(coreObject->actionVerb());
163 static void atkActionInterfaceInit(AtkActionIface* iface)
165 iface->do_action = webkitAccessibleHyperlinkActionDoAction;
166 iface->get_n_actions = webkitAccessibleHyperlinkActionGetNActions;
167 iface->get_description = webkitAccessibleHyperlinkActionGetDescription;
168 iface->get_keybinding = webkitAccessibleHyperlinkActionGetKeybinding;
169 iface->get_name = webkitAccessibleHyperlinkActionGetName;
172 static gchar* webkitAccessibleHyperlinkGetURI(AtkHyperlink* link, gint index)
174 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
175 // FIXME: Do NOT support more than one instance of an AtkObject
176 // implementing AtkHyperlinkImpl in every instance of AtkHyperLink
177 g_return_val_if_fail(!index, 0);
179 AccessibilityObject* coreObject = core(link);
180 if (!coreObject || coreObject->url().isNull())
183 return g_strdup(returnString(coreObject->url().string()));
186 static AtkObject* webkitAccessibleHyperlinkGetObject(AtkHyperlink* link, gint index)
188 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
189 g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);
191 // FIXME: Do NOT support more than one instance of an AtkObject
192 // implementing AtkHyperlinkImpl in every instance of AtkHyperLink
193 g_return_val_if_fail(!index, 0);
195 return ATK_OBJECT(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl);
198 static gint getRangeLengthForObject(AccessibilityObject* obj, Range* range)
200 // This is going to be the actual length in most of the cases
201 int baseLength = TextIterator::rangeLength(range, true);
203 // Check whether the current hyperlink belongs to a list item.
204 // If so, we need to consider the length of the item's marker
205 AccessibilityObject* parent = obj->parentObjectUnignored();
206 if (!parent || !parent->isAccessibilityRenderObject() || !parent->isListItem())
209 // Even if we don't expose list markers to Assistive
210 // Technologies, we need to have a way to measure their length
211 // for those cases when it's needed to take it into account
212 // separately (as in getAccessibilityObjectForOffset)
213 AccessibilityObject* markerObj = parent->firstChild();
217 RenderObject* renderer = markerObj->renderer();
218 if (!renderer || !renderer->isListMarker())
221 RenderListMarker* marker = toRenderListMarker(renderer);
222 return baseLength + marker->text().length() + marker->suffix().length();
225 static gint webkitAccessibleHyperlinkGetStartIndex(AtkHyperlink* link)
227 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
229 AccessibilityObject* coreObject = core(link);
233 AccessibilityObject* parentUnignored = coreObject->parentObjectUnignored();
234 if (!parentUnignored)
237 Node* node = coreObject->node();
241 Node* parentNode = parentUnignored->node();
245 RefPtr<Range> range = Range::create(node->document(), firstPositionInOrBeforeNode(parentNode), firstPositionInOrBeforeNode(node));
246 return getRangeLengthForObject(coreObject, range.get());
249 static gint webkitAccessibleHyperlinkGetEndIndex(AtkHyperlink* link)
251 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
253 AccessibilityObject* coreObject = core(link);
257 AccessibilityObject* parentUnignored = coreObject->parentObjectUnignored();
258 if (!parentUnignored)
261 Node* node = coreObject->node();
265 Node* parentNode = parentUnignored->node();
269 RefPtr<Range> range = Range::create(node->document(), firstPositionInOrBeforeNode(parentNode), lastPositionInOrAfterNode(node));
270 return getRangeLengthForObject(coreObject, range.get());
273 static gboolean webkitAccessibleHyperlinkIsValid(AtkHyperlink* link)
275 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
276 g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, FALSE);
278 // Link is valid for the whole object's lifetime
282 static gint webkitAccessibleHyperlinkGetNAnchors(AtkHyperlink* link)
284 // FIXME Do NOT support more than one instance of an AtkObject
285 // implementing AtkHyperlinkImpl in every instance of AtkHyperLink
286 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
287 g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);
291 static gboolean webkitAccessibleHyperlinkIsSelectedLink(AtkHyperlink* link)
293 // Not implemented: this function is deprecated in ATK now
298 static void webkitAccessibleHyperlinkGetProperty(GObject* object, guint propId, GValue* value, GParamSpec* pspec)
301 case PROP_HYPERLINK_IMPL:
302 g_value_set_object(value, WEBKIT_ACCESSIBLE_HYPERLINK(object)->priv->hyperlinkImpl);
305 G_OBJECT_WARN_INVALID_PROPERTY_ID(object, propId, pspec);
309 static void webkitAccessibleHyperlinkSetProperty(GObject* object, guint propId, const GValue* value, GParamSpec* pspec)
311 WebKitAccessibleHyperlinkPrivate* priv = WEBKIT_ACCESSIBLE_HYPERLINK(object)->priv;
314 case PROP_HYPERLINK_IMPL:
315 // No need to check and unref previous values of
316 // priv->hyperlinkImpl as this is a CONSTRUCT ONLY property
317 priv->hyperlinkImpl = WEBKIT_ACCESSIBLE(g_value_get_object(value));
318 g_object_weak_ref(G_OBJECT(priv->hyperlinkImpl), (GWeakNotify)g_object_unref, object);
321 G_OBJECT_WARN_INVALID_PROPERTY_ID(object, propId, pspec);
325 static void webkitAccessibleHyperlinkFinalize(GObject* object)
327 G_OBJECT_CLASS(webkitAccessibleHyperlinkParentClass)->finalize(object);
330 static void webkitAccessibleHyperlinkClassInit(AtkHyperlinkClass* klass)
332 GObjectClass* gobjectClass = G_OBJECT_CLASS(klass);
334 webkitAccessibleHyperlinkParentClass = g_type_class_peek_parent(klass);
336 gobjectClass->finalize = webkitAccessibleHyperlinkFinalize;
337 gobjectClass->set_property = webkitAccessibleHyperlinkSetProperty;
338 gobjectClass->get_property = webkitAccessibleHyperlinkGetProperty;
340 klass->get_uri = webkitAccessibleHyperlinkGetURI;
341 klass->get_object = webkitAccessibleHyperlinkGetObject;
342 klass->get_start_index = webkitAccessibleHyperlinkGetStartIndex;
343 klass->get_end_index = webkitAccessibleHyperlinkGetEndIndex;
344 klass->is_valid = webkitAccessibleHyperlinkIsValid;
345 klass->get_n_anchors = webkitAccessibleHyperlinkGetNAnchors;
346 klass->is_selected_link = webkitAccessibleHyperlinkIsSelectedLink;
348 g_object_class_install_property(gobjectClass, PROP_HYPERLINK_IMPL,
349 g_param_spec_object("hyperlink-impl",
350 "Hyperlink implementation",
351 "The associated WebKitAccessible instance.",
352 WEBKIT_TYPE_ACCESSIBLE,
353 (GParamFlags)(G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS)));
355 g_type_class_add_private(gobjectClass, sizeof(WebKitAccessibleHyperlinkPrivate));
358 static void webkitAccessibleHyperlinkInit(AtkHyperlink* link)
360 WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv = WEBKIT_ACCESSIBLE_HYPERLINK_GET_PRIVATE(link);
361 WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl = 0;
364 GType webkitAccessibleHyperlinkGetType()
366 static volatile gsize typeVolatile = 0;
368 if (g_once_init_enter(&typeVolatile)) {
369 static const GTypeInfo tinfo = {
370 sizeof(WebKitAccessibleHyperlinkClass),
372 (GBaseFinalizeFunc) 0,
373 (GClassInitFunc) webkitAccessibleHyperlinkClassInit,
374 (GClassFinalizeFunc) 0,
376 sizeof(WebKitAccessibleHyperlink), /* instance size */
377 0, /* nb preallocs */
378 (GInstanceInitFunc) webkitAccessibleHyperlinkInit,
382 static const GInterfaceInfo actionInfo = {
383 (GInterfaceInitFunc)(GInterfaceInitFunc)atkActionInterfaceInit,
384 (GInterfaceFinalizeFunc) 0, 0
387 GType type = g_type_register_static(ATK_TYPE_HYPERLINK, "WebKitAccessibleHyperlink", &tinfo, GTypeFlags(0));
388 g_type_add_interface_static(type, ATK_TYPE_ACTION, &actionInfo);
390 g_once_init_leave(&typeVolatile, type);
396 WebKitAccessibleHyperlink* webkitAccessibleHyperlinkNew(AtkHyperlinkImpl* hyperlinkImpl)
398 g_return_val_if_fail(ATK_IS_HYPERLINK_IMPL(hyperlinkImpl), 0);
399 return WEBKIT_ACCESSIBLE_HYPERLINK(g_object_new(WEBKIT_TYPE_ACCESSIBLE_HYPERLINK, "hyperlink-impl", hyperlinkImpl, 0));
402 WebCore::AccessibilityObject* webkitAccessibleHyperlinkGetAccessibilityObject(WebKitAccessibleHyperlink* link)
404 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
408 #endif // HAVE(ACCESSIBILITY)