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| 1 /* | |
| 2 * Copyright (C) 2010, 2011, 2012 Igalia S.L. | |
| 3 * Copyright (C) 2013 Samsung Electronics | |
| 4 * | |
| 5 * This library is free software; you can redistribute it and/or | |
| 6 * modify it under the terms of the GNU Library General Public | |
| 7 * License as published by the Free Software Foundation; either | |
| 8 * version 2 of the License, or (at your option) any later version. | |
| 9 * | |
| 10 * This library is distributed in the hope that it will be useful, | |
| 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 * Library General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU Library General Public License | |
| 16 * along with this library; see the file COPYING.LIB. If not, write to | |
| 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 18 * Boston, MA 02110-1301, USA. | |
| 19 */ | |
| 20 | |
| 21 #include "config.h" | |
| 22 #include "WebKitAccessibleHyperlink.h" | |
| 23 | |
| 24 #if HAVE(ACCESSIBILITY) | |
| 25 | |
| 26 #include "AXObjectCache.h" | |
| 27 #include "AccessibilityObject.h" | |
| 28 #include "NotImplemented.h" | |
| 29 #include "Position.h" | |
| 30 #include "Range.h" | |
| 31 #include "RenderListMarker.h" | |
| 32 #include "RenderObject.h" | |
| 33 #include "TextIterator.h" | |
| 34 #include "WebKitAccessibleUtil.h" | |
| 35 #include "WebKitAccessibleWrapperAtk.h" | |
| 36 #include "htmlediting.h" | |
| 37 | |
| 38 #include <atk/atk.h> | |
| 39 #include <glib.h> | |
| 40 | |
| 41 using namespace WebCore; | |
| 42 | |
| 43 struct _WebKitAccessibleHyperlinkPrivate { | |
| 44 WebKitAccessible* hyperlinkImpl; | |
| 45 | |
| 46 // We cache these values so we can return them as const values. | |
| 47 CString actionName; | |
| 48 CString actionKeyBinding; | |
| 49 }; | |
| 50 | |
| 51 #define WEBKIT_ACCESSIBLE_HYPERLINK_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVAT
E((obj), WEBKIT_TYPE_ACCESSIBLE_HYPERLINK, WebKitAccessibleHyperlinkPrivate)) | |
| 52 | |
| 53 enum { | |
| 54 PROP_0, | |
| 55 | |
| 56 PROP_HYPERLINK_IMPL | |
| 57 }; | |
| 58 | |
| 59 static gpointer webkitAccessibleHyperlinkParentClass = 0; | |
| 60 | |
| 61 static AccessibilityObject* core(WebKitAccessible* accessible) | |
| 62 { | |
| 63 if (!accessible || !WEBKIT_IS_ACCESSIBLE(accessible)) | |
| 64 return 0; | |
| 65 | |
| 66 return webkitAccessibleGetAccessibilityObject(accessible); | |
| 67 } | |
| 68 | |
| 69 static AccessibilityObject* core(WebKitAccessibleHyperlink* link) | |
| 70 { | |
| 71 if (!link) | |
| 72 return 0; | |
| 73 | |
| 74 return core(link->priv->hyperlinkImpl); | |
| 75 } | |
| 76 | |
| 77 static AccessibilityObject* core(AtkHyperlink* link) | |
| 78 { | |
| 79 if (!WEBKIT_IS_ACCESSIBLE_HYPERLINK(link)) | |
| 80 return 0; | |
| 81 | |
| 82 return core(WEBKIT_ACCESSIBLE_HYPERLINK(link)); | |
| 83 } | |
| 84 | |
| 85 static AccessibilityObject* core(AtkAction* action) | |
| 86 { | |
| 87 return core(WEBKIT_ACCESSIBLE_HYPERLINK(action)); | |
| 88 } | |
| 89 | |
| 90 | |
| 91 static gboolean webkitAccessibleHyperlinkActionDoAction(AtkAction* action, gint
index) | |
| 92 { | |
| 93 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), FALSE); | |
| 94 g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImp
l, FALSE); | |
| 95 g_return_val_if_fail(!index, FALSE); | |
| 96 | |
| 97 if (!ATK_IS_ACTION(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl)
) | |
| 98 return FALSE; | |
| 99 | |
| 100 AccessibilityObject* coreObject = core(action); | |
| 101 if (!coreObject) | |
| 102 return FALSE; | |
| 103 | |
| 104 return coreObject->performDefaultAction(); | |
| 105 } | |
| 106 | |
| 107 static gint webkitAccessibleHyperlinkActionGetNActions(AtkAction* action) | |
| 108 { | |
| 109 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0); | |
| 110 g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImp
l, 0); | |
| 111 | |
| 112 if (!ATK_IS_ACTION(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl)
) | |
| 113 return 0; | |
| 114 | |
| 115 return 1; | |
| 116 } | |
| 117 | |
| 118 static const gchar* webkitAccessibleHyperlinkActionGetDescription(AtkAction* act
ion, gint index) | |
| 119 { | |
| 120 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0); | |
| 121 g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImp
l, 0); | |
| 122 g_return_val_if_fail(!index, 0); | |
| 123 | |
| 124 // TODO: Need a way to provide/localize action descriptions. | |
| 125 notImplemented(); | |
| 126 return ""; | |
| 127 } | |
| 128 | |
| 129 static const gchar* webkitAccessibleHyperlinkActionGetKeybinding(AtkAction* acti
on, gint index) | |
| 130 { | |
| 131 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0); | |
| 132 g_return_val_if_fail(!index, 0); | |
| 133 | |
| 134 WebKitAccessibleHyperlinkPrivate* priv = WEBKIT_ACCESSIBLE_HYPERLINK(action)
->priv; | |
| 135 g_return_val_if_fail(priv->hyperlinkImpl, 0); | |
| 136 | |
| 137 if (!ATK_IS_ACTION(priv->hyperlinkImpl)) | |
| 138 return 0; | |
| 139 | |
| 140 AccessibilityObject* coreObject = core(action); | |
| 141 if (!coreObject) | |
| 142 return 0; | |
| 143 | |
| 144 priv->actionKeyBinding = coreObject->accessKey().string().utf8(); | |
| 145 return priv->actionKeyBinding.data(); | |
| 146 } | |
| 147 | |
| 148 static const gchar* webkitAccessibleHyperlinkActionGetName(AtkAction* action, gi
nt index) | |
| 149 { | |
| 150 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0); | |
| 151 g_return_val_if_fail(!index, 0); | |
| 152 | |
| 153 WebKitAccessibleHyperlinkPrivate* priv = WEBKIT_ACCESSIBLE_HYPERLINK(action)
->priv; | |
| 154 g_return_val_if_fail(priv->hyperlinkImpl, 0); | |
| 155 | |
| 156 if (!ATK_IS_ACTION(priv->hyperlinkImpl)) | |
| 157 return 0; | |
| 158 | |
| 159 AccessibilityObject* coreObject = core(action); | |
| 160 if (!coreObject) | |
| 161 return 0; | |
| 162 | |
| 163 priv->actionName = coreObject->actionVerb().utf8(); | |
| 164 return priv->actionName.data(); | |
| 165 } | |
| 166 | |
| 167 static void atkActionInterfaceInit(AtkActionIface* iface) | |
| 168 { | |
| 169 iface->do_action = webkitAccessibleHyperlinkActionDoAction; | |
| 170 iface->get_n_actions = webkitAccessibleHyperlinkActionGetNActions; | |
| 171 iface->get_description = webkitAccessibleHyperlinkActionGetDescription; | |
| 172 iface->get_keybinding = webkitAccessibleHyperlinkActionGetKeybinding; | |
| 173 iface->get_name = webkitAccessibleHyperlinkActionGetName; | |
| 174 } | |
| 175 | |
| 176 static gchar* webkitAccessibleHyperlinkGetURI(AtkHyperlink* link, gint index) | |
| 177 { | |
| 178 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0); | |
| 179 // FIXME: Do NOT support more than one instance of an AtkObject | |
| 180 // implementing AtkHyperlinkImpl in every instance of AtkHyperLink | |
| 181 g_return_val_if_fail(!index, 0); | |
| 182 | |
| 183 AccessibilityObject* coreObject = core(link); | |
| 184 if (!coreObject || coreObject->url().isNull()) | |
| 185 return 0; | |
| 186 | |
| 187 return g_strdup(coreObject->url().string().utf8().data()); | |
| 188 } | |
| 189 | |
| 190 static AtkObject* webkitAccessibleHyperlinkGetObject(AtkHyperlink* link, gint in
dex) | |
| 191 { | |
| 192 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0); | |
| 193 g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl,
0); | |
| 194 | |
| 195 // FIXME: Do NOT support more than one instance of an AtkObject | |
| 196 // implementing AtkHyperlinkImpl in every instance of AtkHyperLink | |
| 197 g_return_val_if_fail(!index, 0); | |
| 198 | |
| 199 return ATK_OBJECT(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl); | |
| 200 } | |
| 201 | |
| 202 static gint getRangeLengthForObject(AccessibilityObject* obj, Range* range) | |
| 203 { | |
| 204 // This is going to be the actual length in most of the cases | |
| 205 int baseLength = TextIterator::rangeLength(range, true); | |
| 206 | |
| 207 // Check whether the current hyperlink belongs to a list item. | |
| 208 // If so, we need to consider the length of the item's marker | |
| 209 AccessibilityObject* parent = obj->parentObjectUnignored(); | |
| 210 if (!parent || !parent->isAccessibilityRenderObject() || !parent->isListItem
()) | |
| 211 return baseLength; | |
| 212 | |
| 213 // Even if we don't expose list markers to Assistive | |
| 214 // Technologies, we need to have a way to measure their length | |
| 215 // for those cases when it's needed to take it into account | |
| 216 // separately (as in getAccessibilityObjectForOffset) | |
| 217 AccessibilityObject* markerObj = parent->firstChild(); | |
| 218 if (!markerObj) | |
| 219 return baseLength; | |
| 220 | |
| 221 RenderObject* renderer = markerObj->renderer(); | |
| 222 if (!renderer || !renderer->isListMarker()) | |
| 223 return baseLength; | |
| 224 | |
| 225 RenderListMarker* marker = toRenderListMarker(renderer); | |
| 226 return baseLength + marker->text().length() + marker->suffix().length(); | |
| 227 } | |
| 228 | |
| 229 static gint webkitAccessibleHyperlinkGetStartIndex(AtkHyperlink* link) | |
| 230 { | |
| 231 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0); | |
| 232 | |
| 233 AccessibilityObject* coreObject = core(link); | |
| 234 if (!coreObject) | |
| 235 return 0; | |
| 236 | |
| 237 AccessibilityObject* parentUnignored = coreObject->parentObjectUnignored(); | |
| 238 if (!parentUnignored) | |
| 239 return 0; | |
| 240 | |
| 241 Node* node = coreObject->node(); | |
| 242 if (!node) | |
| 243 return 0; | |
| 244 | |
| 245 Node* parentNode = parentUnignored->node(); | |
| 246 if (!parentNode) | |
| 247 return 0; | |
| 248 | |
| 249 RefPtr<Range> range = Range::create(node->document(), firstPositionInOrBefor
eNode(parentNode), firstPositionInOrBeforeNode(node)); | |
| 250 return getRangeLengthForObject(coreObject, range.get()); | |
| 251 } | |
| 252 | |
| 253 static gint webkitAccessibleHyperlinkGetEndIndex(AtkHyperlink* link) | |
| 254 { | |
| 255 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0); | |
| 256 | |
| 257 AccessibilityObject* coreObject = core(link); | |
| 258 if (!coreObject) | |
| 259 return 0; | |
| 260 | |
| 261 AccessibilityObject* parentUnignored = coreObject->parentObjectUnignored(); | |
| 262 if (!parentUnignored) | |
| 263 return 0; | |
| 264 | |
| 265 Node* node = coreObject->node(); | |
| 266 if (!node) | |
| 267 return 0; | |
| 268 | |
| 269 Node* parentNode = parentUnignored->node(); | |
| 270 if (!parentNode) | |
| 271 return 0; | |
| 272 | |
| 273 RefPtr<Range> range = Range::create(node->document(), firstPositionInOrBefor
eNode(parentNode), lastPositionInOrAfterNode(node)); | |
| 274 return getRangeLengthForObject(coreObject, range.get()); | |
| 275 } | |
| 276 | |
| 277 static gboolean webkitAccessibleHyperlinkIsValid(AtkHyperlink* link) | |
| 278 { | |
| 279 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0); | |
| 280 g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl,
FALSE); | |
| 281 | |
| 282 // Link is valid for the whole object's lifetime | |
| 283 return TRUE; | |
| 284 } | |
| 285 | |
| 286 static gint webkitAccessibleHyperlinkGetNAnchors(AtkHyperlink* link) | |
| 287 { | |
| 288 // FIXME Do NOT support more than one instance of an AtkObject | |
| 289 // implementing AtkHyperlinkImpl in every instance of AtkHyperLink | |
| 290 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0); | |
| 291 g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl,
0); | |
| 292 return 1; | |
| 293 } | |
| 294 | |
| 295 static gboolean webkitAccessibleHyperlinkIsSelectedLink(AtkHyperlink*) | |
| 296 { | |
| 297 // Not implemented: this function is deprecated in ATK now | |
| 298 notImplemented(); | |
| 299 return FALSE; | |
| 300 } | |
| 301 | |
| 302 static void webkitAccessibleHyperlinkGetProperty(GObject* object, guint propId,
GValue* value, GParamSpec* pspec) | |
| 303 { | |
| 304 switch (propId) { | |
| 305 case PROP_HYPERLINK_IMPL: | |
| 306 g_value_set_object(value, WEBKIT_ACCESSIBLE_HYPERLINK(object)->priv->hyp
erlinkImpl); | |
| 307 break; | |
| 308 default: | |
| 309 G_OBJECT_WARN_INVALID_PROPERTY_ID(object, propId, pspec); | |
| 310 } | |
| 311 } | |
| 312 | |
| 313 static void webkitAccessibleHyperlinkSetProperty(GObject* object, guint propId,
const GValue* value, GParamSpec* pspec) | |
| 314 { | |
| 315 WebKitAccessibleHyperlinkPrivate* priv = WEBKIT_ACCESSIBLE_HYPERLINK(object)
->priv; | |
| 316 | |
| 317 switch (propId) { | |
| 318 case PROP_HYPERLINK_IMPL: | |
| 319 // No need to check and unref previous values of | |
| 320 // priv->hyperlinkImpl as this is a CONSTRUCT ONLY property | |
| 321 priv->hyperlinkImpl = WEBKIT_ACCESSIBLE(g_value_get_object(value)); | |
| 322 g_object_weak_ref(G_OBJECT(priv->hyperlinkImpl), (GWeakNotify)g_object_u
nref, object); | |
| 323 break; | |
| 324 default: | |
| 325 G_OBJECT_WARN_INVALID_PROPERTY_ID(object, propId, pspec); | |
| 326 } | |
| 327 } | |
| 328 | |
| 329 static void webkitAccessibleHyperlinkFinalize(GObject* object) | |
| 330 { | |
| 331 G_OBJECT_CLASS(webkitAccessibleHyperlinkParentClass)->finalize(object); | |
| 332 } | |
| 333 | |
| 334 static void webkitAccessibleHyperlinkClassInit(AtkHyperlinkClass* klass) | |
| 335 { | |
| 336 GObjectClass* gobjectClass = G_OBJECT_CLASS(klass); | |
| 337 | |
| 338 webkitAccessibleHyperlinkParentClass = g_type_class_peek_parent(klass); | |
| 339 | |
| 340 gobjectClass->finalize = webkitAccessibleHyperlinkFinalize; | |
| 341 gobjectClass->set_property = webkitAccessibleHyperlinkSetProperty; | |
| 342 gobjectClass->get_property = webkitAccessibleHyperlinkGetProperty; | |
| 343 | |
| 344 klass->get_uri = webkitAccessibleHyperlinkGetURI; | |
| 345 klass->get_object = webkitAccessibleHyperlinkGetObject; | |
| 346 klass->get_start_index = webkitAccessibleHyperlinkGetStartIndex; | |
| 347 klass->get_end_index = webkitAccessibleHyperlinkGetEndIndex; | |
| 348 klass->is_valid = webkitAccessibleHyperlinkIsValid; | |
| 349 klass->get_n_anchors = webkitAccessibleHyperlinkGetNAnchors; | |
| 350 klass->is_selected_link = webkitAccessibleHyperlinkIsSelectedLink; | |
| 351 | |
| 352 g_object_class_install_property(gobjectClass, PROP_HYPERLINK_IMPL, | |
| 353 g_param_spec_object("hyperlink-impl", | |
| 354 "Hyperlink implementation", | |
| 355 "The associated WebKitAccessible instance.", | |
| 356 WEBKIT_TYPE_ACCESSIBLE, | |
| 357 (GParamFlags)(G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_S
TATIC_STRINGS))); | |
| 358 | |
| 359 g_type_class_add_private(gobjectClass, sizeof(WebKitAccessibleHyperlinkPriva
te)); | |
| 360 } | |
| 361 | |
| 362 static void webkitAccessibleHyperlinkInit(AtkHyperlink* link) | |
| 363 { | |
| 364 WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv = WEBKIT_ACCESSIBLE_HYPERLINK_GET_PR
IVATE(link); | |
| 365 WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl = 0; | |
| 366 } | |
| 367 | |
| 368 GType webkitAccessibleHyperlinkGetType() | |
| 369 { | |
| 370 static volatile gsize typeVolatile = 0; | |
| 371 | |
| 372 if (g_once_init_enter(&typeVolatile)) { | |
| 373 static const GTypeInfo tinfo = { | |
| 374 sizeof(WebKitAccessibleHyperlinkClass), | |
| 375 (GBaseInitFunc) 0, | |
| 376 (GBaseFinalizeFunc) 0, | |
| 377 (GClassInitFunc) webkitAccessibleHyperlinkClassInit, | |
| 378 (GClassFinalizeFunc) 0, | |
| 379 0, /* class data */ | |
| 380 sizeof(WebKitAccessibleHyperlink), /* instance size */ | |
| 381 0, /* nb preallocs */ | |
| 382 (GInstanceInitFunc) webkitAccessibleHyperlinkInit, | |
| 383 0 /* value table */ | |
| 384 }; | |
| 385 | |
| 386 static const GInterfaceInfo actionInfo = { | |
| 387 (GInterfaceInitFunc)(GInterfaceInitFunc)atkActionInterfaceInit, | |
| 388 (GInterfaceFinalizeFunc) 0, 0 | |
| 389 }; | |
| 390 | |
| 391 GType type = g_type_register_static(ATK_TYPE_HYPERLINK, "WebKitAccessibl
eHyperlink", &tinfo, GTypeFlags(0)); | |
| 392 g_type_add_interface_static(type, ATK_TYPE_ACTION, &actionInfo); | |
| 393 | |
| 394 g_once_init_leave(&typeVolatile, type); | |
| 395 } | |
| 396 | |
| 397 return typeVolatile; | |
| 398 } | |
| 399 | |
| 400 WebKitAccessibleHyperlink* webkitAccessibleHyperlinkNew(AtkHyperlinkImpl* hyperl
inkImpl) | |
| 401 { | |
| 402 g_return_val_if_fail(ATK_IS_HYPERLINK_IMPL(hyperlinkImpl), 0); | |
| 403 return WEBKIT_ACCESSIBLE_HYPERLINK(g_object_new(WEBKIT_TYPE_ACCESSIBLE_HYPER
LINK, "hyperlink-impl", hyperlinkImpl, 0)); | |
| 404 } | |
| 405 | |
| 406 WebCore::AccessibilityObject* webkitAccessibleHyperlinkGetAccessibilityObject(We
bKitAccessibleHyperlink* link) | |
| 407 { | |
| 408 g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0); | |
| 409 return core(link); | |
| 410 } | |
| 411 | |
| 412 #endif // HAVE(ACCESSIBILITY) | |
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Chromium Code Reviews
Issue 13726025:
Remove GTK AX support, we've never used it (Closed)
Base URL: svn://svn.chromium.org/blink/trunk