1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "content/browser/accessibility/browser_accessibility_win.h"
7 #include <UIAutomationClient.h>
8 #include <UIAutomationCoreApi.h>
10 #include "base/strings/string_number_conversions.h"
11 #include "base/strings/string_split.h"
12 #include "base/strings/string_util.h"
13 #include "base/strings/utf_string_conversions.h"
14 #include "base/win/enum_variant.h"
15 #include "base/win/scoped_comptr.h"
16 #include "base/win/windows_version.h"
17 #include "content/browser/accessibility/browser_accessibility_manager_win.h"
18 #include "content/browser/accessibility/browser_accessibility_state_impl.h"
19 #include "content/common/accessibility_messages.h"
20 #include "content/public/common/content_client.h"
21 #include "ui/base/accessibility/accessible_text_utils.h"
22 #include "ui/base/win/accessibility_ids_win.h"
23 #include "ui/base/win/accessibility_misc_utils.h"
27 // These nonstandard GUIDs are taken directly from the Mozilla sources
28 // (accessible/src/msaa/nsAccessNodeWrap.cpp); some documentation is here:
29 // http://developer.mozilla.org/en/Accessibility/AT-APIs/ImplementationFeatures/MSAA
30 const GUID GUID_ISimpleDOM = {
31 0x0c539790, 0x12e4, 0x11cf,
32 0xb6, 0x61, 0x00, 0xaa, 0x00, 0x4c, 0xd6, 0xd8};
33 const GUID GUID_IAccessibleContentDocument = {
34 0xa5d8e1f3, 0x3571, 0x4d8f,
35 0x95, 0x21, 0x07, 0xed, 0x28, 0xfb, 0x07, 0x2e};
37 const char16 BrowserAccessibilityWin::kEmbeddedCharacter[] = L"\xfffc";
40 LONG BrowserAccessibilityWin::next_unique_id_win_ =
41 base::win::kFirstBrowserAccessibilityManagerAccessibilityId;
44 // BrowserAccessibilityRelation
46 // A simple implementation of IAccessibleRelation, used to represent
47 // a relationship between two accessible nodes in the tree.
50 class BrowserAccessibilityRelation
51 : public CComObjectRootEx<CComMultiThreadModel>,
52 public IAccessibleRelation {
53 BEGIN_COM_MAP(BrowserAccessibilityRelation)
54 COM_INTERFACE_ENTRY(IAccessibleRelation)
57 CONTENT_EXPORT BrowserAccessibilityRelation() {}
58 CONTENT_EXPORT virtual ~BrowserAccessibilityRelation() {}
60 CONTENT_EXPORT void Initialize(BrowserAccessibilityWin* owner,
61 const string16& type);
62 CONTENT_EXPORT void AddTarget(int target_id);
64 // IAccessibleRelation methods.
65 CONTENT_EXPORT STDMETHODIMP get_relationType(BSTR* relation_type);
66 CONTENT_EXPORT STDMETHODIMP get_nTargets(long* n_targets);
67 CONTENT_EXPORT STDMETHODIMP get_target(long target_index, IUnknown** target);
68 CONTENT_EXPORT STDMETHODIMP get_targets(long max_targets,
72 // IAccessibleRelation methods not implemented.
73 CONTENT_EXPORT STDMETHODIMP get_localizedRelationType(BSTR* relation_type) {
79 base::win::ScopedComPtr<BrowserAccessibilityWin> owner_;
80 std::vector<int> target_ids_;
83 void BrowserAccessibilityRelation::Initialize(BrowserAccessibilityWin* owner,
84 const string16& type) {
89 void BrowserAccessibilityRelation::AddTarget(int target_id) {
90 target_ids_.push_back(target_id);
93 STDMETHODIMP BrowserAccessibilityRelation::get_relationType(
94 BSTR* relation_type) {
98 if (!owner_->instance_active())
101 *relation_type = SysAllocString(type_.c_str());
102 DCHECK(*relation_type);
106 STDMETHODIMP BrowserAccessibilityRelation::get_nTargets(long* n_targets) {
110 if (!owner_->instance_active())
113 *n_targets = static_cast<long>(target_ids_.size());
115 BrowserAccessibilityManager* manager = owner_->manager();
116 for (long i = *n_targets - 1; i >= 0; --i) {
117 BrowserAccessibility* result = manager->GetFromRendererID(target_ids_[i]);
118 if (!result || !result->instance_active()) {
126 STDMETHODIMP BrowserAccessibilityRelation::get_target(long target_index,
131 if (!owner_->instance_active())
134 if (target_index < 0 ||
135 target_index >= static_cast<long>(target_ids_.size())) {
139 BrowserAccessibilityManager* manager = owner_->manager();
140 BrowserAccessibility* result =
141 manager->GetFromRendererID(target_ids_[target_index]);
142 if (!result || !result->instance_active())
145 *target = static_cast<IAccessible*>(
146 result->ToBrowserAccessibilityWin()->NewReference());
150 STDMETHODIMP BrowserAccessibilityRelation::get_targets(long max_targets,
153 if (!targets || !n_targets)
156 if (!owner_->instance_active())
159 long count = static_cast<long>(target_ids_.size());
160 if (count > max_targets)
167 for (long i = 0; i < count; ++i) {
168 HRESULT result = get_target(i, &targets[i]);
177 // BrowserAccessibilityWin
181 BrowserAccessibility* BrowserAccessibility::Create() {
182 CComObject<BrowserAccessibilityWin>* instance;
183 HRESULT hr = CComObject<BrowserAccessibilityWin>::CreateInstance(&instance);
184 DCHECK(SUCCEEDED(hr));
185 return instance->NewReference();
188 BrowserAccessibilityWin* BrowserAccessibility::ToBrowserAccessibilityWin() {
189 return static_cast<BrowserAccessibilityWin*>(this);
192 BrowserAccessibilityWin::BrowserAccessibilityWin()
199 // Start unique IDs at -1 and decrement each time, because get_accChild
200 // uses positive IDs to enumerate children, so we use negative IDs to
201 // clearly distinguish between indices and unique IDs.
202 unique_id_win_ = next_unique_id_win_;
203 if (next_unique_id_win_ ==
204 base::win::kLastBrowserAccessibilityManagerAccessibilityId) {
205 next_unique_id_win_ =
206 base::win::kFirstBrowserAccessibilityManagerAccessibilityId;
208 next_unique_id_win_--;
211 BrowserAccessibilityWin::~BrowserAccessibilityWin() {
212 for (size_t i = 0; i < relations_.size(); ++i)
213 relations_[i]->Release();
217 // IAccessible methods.
220 // * Always test for instance_active_ first and return E_FAIL if it's false.
221 // * Always check for invalid arguments first, even if they're unused.
222 // * Return S_FALSE if the only output is a string argument and it's empty.
225 HRESULT BrowserAccessibilityWin::accDoDefaultAction(VARIANT var_id) {
226 if (!instance_active_)
229 BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
233 manager_->DoDefaultAction(*target);
237 STDMETHODIMP BrowserAccessibilityWin::accHitTest(LONG x_left,
240 if (!instance_active_)
246 gfx::Point point(x_left, y_top);
247 if (!GetGlobalBoundsRect().Contains(point)) {
248 // Return S_FALSE and VT_EMPTY when the outside the object's boundaries.
249 child->vt = VT_EMPTY;
253 BrowserAccessibility* result = BrowserAccessibilityForPoint(point);
254 if (result == this) {
255 // Point is within this object.
257 child->lVal = CHILDID_SELF;
259 child->vt = VT_DISPATCH;
260 child->pdispVal = result->ToBrowserAccessibilityWin()->NewReference();
265 STDMETHODIMP BrowserAccessibilityWin::accLocation(LONG* x_left,
270 if (!instance_active_)
273 if (!x_left || !y_top || !width || !height)
276 BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
280 gfx::Rect bounds = target->GetGlobalBoundsRect();
281 *x_left = bounds.x();
283 *width = bounds.width();
284 *height = bounds.height();
289 STDMETHODIMP BrowserAccessibilityWin::accNavigate(LONG nav_dir,
292 BrowserAccessibilityWin* target = GetTargetFromChildID(start);
296 if ((nav_dir == NAVDIR_LASTCHILD || nav_dir == NAVDIR_FIRSTCHILD) &&
297 start.lVal != CHILDID_SELF) {
298 // MSAA states that navigating to first/last child can only be from self.
302 BrowserAccessibility* result = NULL;
308 // These directions are not implemented, matching Mozilla and IE.
310 case NAVDIR_FIRSTCHILD:
311 if (!target->children_.empty())
312 result = target->children_.front();
314 case NAVDIR_LASTCHILD:
315 if (!target->children_.empty())
316 result = target->children_.back();
319 result = target->GetNextSibling();
321 case NAVDIR_PREVIOUS:
322 result = target->GetPreviousSibling();
331 end->vt = VT_DISPATCH;
332 end->pdispVal = result->ToBrowserAccessibilityWin()->NewReference();
336 STDMETHODIMP BrowserAccessibilityWin::get_accChild(VARIANT var_child,
337 IDispatch** disp_child) {
338 if (!instance_active_)
346 BrowserAccessibilityWin* target = GetTargetFromChildID(var_child);
350 (*disp_child) = target->NewReference();
354 STDMETHODIMP BrowserAccessibilityWin::get_accChildCount(LONG* child_count) {
355 if (!instance_active_)
361 *child_count = PlatformChildCount();
366 STDMETHODIMP BrowserAccessibilityWin::get_accDefaultAction(VARIANT var_id,
368 if (!instance_active_)
374 BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
378 return target->GetStringAttributeAsBstr(
379 AccessibilityNodeData::ATTR_SHORTCUT, def_action);
382 STDMETHODIMP BrowserAccessibilityWin::get_accDescription(VARIANT var_id,
384 if (!instance_active_)
390 BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
394 return target->GetStringAttributeAsBstr(
395 AccessibilityNodeData::ATTR_DESCRIPTION, desc);
398 STDMETHODIMP BrowserAccessibilityWin::get_accFocus(VARIANT* focus_child) {
399 if (!instance_active_)
405 BrowserAccessibilityWin* focus = static_cast<BrowserAccessibilityWin*>(
406 manager_->GetFocus(this));
408 focus_child->vt = VT_I4;
409 focus_child->lVal = CHILDID_SELF;
410 } else if (focus == NULL) {
411 focus_child->vt = VT_EMPTY;
413 focus_child->vt = VT_DISPATCH;
414 focus_child->pdispVal = focus->NewReference();
420 STDMETHODIMP BrowserAccessibilityWin::get_accHelp(VARIANT var_id, BSTR* help) {
421 if (!instance_active_)
427 BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
431 return target->GetStringAttributeAsBstr(
432 AccessibilityNodeData::ATTR_HELP, help);
435 STDMETHODIMP BrowserAccessibilityWin::get_accKeyboardShortcut(VARIANT var_id,
437 if (!instance_active_)
443 BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
447 return target->GetStringAttributeAsBstr(
448 AccessibilityNodeData::ATTR_SHORTCUT, acc_key);
451 STDMETHODIMP BrowserAccessibilityWin::get_accName(VARIANT var_id, BSTR* name) {
452 if (!instance_active_)
458 BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
462 std::string name_str = target->name();
464 // If the name is empty, see if it's labeled by another element.
465 if (name_str.empty()) {
467 if (target->GetIntAttribute(AccessibilityNodeData::ATTR_TITLE_UI_ELEMENT,
469 BrowserAccessibility* title_elem =
470 manager_->GetFromRendererID(title_elem_id);
472 name_str = title_elem->GetTextRecursive();
476 if (name_str.empty())
479 *name = SysAllocString(UTF8ToUTF16(name_str).c_str());
485 STDMETHODIMP BrowserAccessibilityWin::get_accParent(IDispatch** disp_parent) {
486 if (!instance_active_)
492 IAccessible* parent = parent_->ToBrowserAccessibilityWin();
493 if (parent == NULL) {
494 // This happens if we're the root of the tree;
495 // return the IAccessible for the window.
496 parent = manager_->ToBrowserAccessibilityManagerWin()->parent_iaccessible();
497 // |parent| can only be NULL if the manager was created before the parent
498 // IAccessible was known and it wasn't subsequently set before a client
499 // requested it. Crash hard if this happens so that we get crash reports.
504 *disp_parent = parent;
508 STDMETHODIMP BrowserAccessibilityWin::get_accRole(VARIANT var_id,
510 if (!instance_active_)
516 BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
520 if (!target->role_name_.empty()) {
522 role->bstrVal = SysAllocString(target->role_name_.c_str());
525 role->lVal = target->ia_role_;
530 STDMETHODIMP BrowserAccessibilityWin::get_accState(VARIANT var_id,
532 if (!instance_active_)
538 BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
543 state->lVal = target->ia_state_;
544 if (manager_->GetFocus(NULL) == this)
545 state->lVal |= STATE_SYSTEM_FOCUSED;
550 STDMETHODIMP BrowserAccessibilityWin::get_accValue(VARIANT var_id,
552 if (!instance_active_)
558 BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
562 if (target->ia_role() == ROLE_SYSTEM_PROGRESSBAR ||
563 target->ia_role() == ROLE_SYSTEM_SCROLLBAR ||
564 target->ia_role() == ROLE_SYSTEM_SLIDER) {
565 string16 value_text = target->GetValueText();
566 *value = SysAllocString(value_text.c_str());
571 // Expose color well value.
572 if (target->ia2_role() == IA2_ROLE_COLOR_CHOOSER) {
573 int r = target->GetIntAttribute(
574 AccessibilityNodeData::ATTR_COLOR_VALUE_RED);
575 int g = target->GetIntAttribute(
576 AccessibilityNodeData::ATTR_COLOR_VALUE_GREEN);
577 int b = target->GetIntAttribute(
578 AccessibilityNodeData::ATTR_COLOR_VALUE_BLUE);
580 value_text = base::IntToString16((r * 100) / 255) + L"% red " +
581 base::IntToString16((g * 100) / 255) + L"% green " +
582 base::IntToString16((b * 100) / 255) + L"% blue";
583 *value = SysAllocString(value_text.c_str());
588 *value = SysAllocString(UTF8ToUTF16(target->value()).c_str());
593 STDMETHODIMP BrowserAccessibilityWin::get_accHelpTopic(BSTR* help_file,
599 STDMETHODIMP BrowserAccessibilityWin::get_accSelection(VARIANT* selected) {
600 if (!instance_active_)
603 if (role_ != WebKit::WebAXRoleListBox)
606 unsigned long selected_count = 0;
607 for (size_t i = 0; i < children_.size(); ++i) {
608 if (children_[i]->HasState(WebKit::WebAXStateSelected))
612 if (selected_count == 0) {
613 selected->vt = VT_EMPTY;
617 if (selected_count == 1) {
618 for (size_t i = 0; i < children_.size(); ++i) {
619 if (children_[i]->HasState(WebKit::WebAXStateSelected)) {
620 selected->vt = VT_DISPATCH;
622 children_[i]->ToBrowserAccessibilityWin()->NewReference();
628 // Multiple items are selected.
629 base::win::EnumVariant* enum_variant =
630 new base::win::EnumVariant(selected_count);
631 enum_variant->AddRef();
632 unsigned long index = 0;
633 for (size_t i = 0; i < children_.size(); ++i) {
634 if (children_[i]->HasState(WebKit::WebAXStateSelected)) {
635 enum_variant->ItemAt(index)->vt = VT_DISPATCH;
636 enum_variant->ItemAt(index)->pdispVal =
637 children_[i]->ToBrowserAccessibilityWin()->NewReference();
641 selected->vt = VT_UNKNOWN;
642 selected->punkVal = static_cast<IUnknown*>(
643 static_cast<base::win::IUnknownImpl*>(enum_variant));
647 STDMETHODIMP BrowserAccessibilityWin::accSelect(
648 LONG flags_sel, VARIANT var_id) {
649 if (!instance_active_)
652 if (flags_sel & SELFLAG_TAKEFOCUS) {
653 manager_->SetFocus(this, true);
661 // IAccessible2 methods.
664 STDMETHODIMP BrowserAccessibilityWin::role(LONG* role) {
665 if (!instance_active_)
676 STDMETHODIMP BrowserAccessibilityWin::get_attributes(BSTR* attributes) {
677 if (!instance_active_)
683 // The iaccessible2 attributes are a set of key-value pairs
684 // separated by semicolons, with a colon between the key and the value.
686 for (unsigned int i = 0; i < ia2_attributes_.size(); ++i) {
689 str += ia2_attributes_[i];
695 *attributes = SysAllocString(str.c_str());
700 STDMETHODIMP BrowserAccessibilityWin::get_states(AccessibleStates* states) {
701 if (!instance_active_)
707 *states = ia2_state_;
712 STDMETHODIMP BrowserAccessibilityWin::get_uniqueID(LONG* unique_id) {
713 if (!instance_active_)
719 *unique_id = unique_id_win_;
723 STDMETHODIMP BrowserAccessibilityWin::get_windowHandle(HWND* window_handle) {
724 if (!instance_active_)
730 *window_handle = manager_->ToBrowserAccessibilityManagerWin()->parent_hwnd();
734 STDMETHODIMP BrowserAccessibilityWin::get_indexInParent(LONG* index_in_parent) {
735 if (!instance_active_)
738 if (!index_in_parent)
741 *index_in_parent = index_in_parent_;
745 STDMETHODIMP BrowserAccessibilityWin::get_nRelations(LONG* n_relations) {
746 if (!instance_active_)
752 *n_relations = relations_.size();
756 STDMETHODIMP BrowserAccessibilityWin::get_relation(
758 IAccessibleRelation** relation) {
759 if (!instance_active_)
762 if (relation_index < 0 ||
763 relation_index >= static_cast<long>(relations_.size())) {
770 relations_[relation_index]->AddRef();
771 *relation = relations_[relation_index];
775 STDMETHODIMP BrowserAccessibilityWin::get_relations(
777 IAccessibleRelation** relations,
779 if (!instance_active_)
782 if (!relations || !n_relations)
785 long count = static_cast<long>(relations_.size());
786 *n_relations = count;
790 for (long i = 0; i < count; ++i) {
791 relations_[i]->AddRef();
792 relations[i] = relations_[i];
798 STDMETHODIMP BrowserAccessibilityWin::scrollTo(enum IA2ScrollType scroll_type) {
799 if (!instance_active_)
802 gfx::Rect r = location_;
803 switch(scroll_type) {
804 case IA2_SCROLL_TYPE_TOP_LEFT:
805 manager_->ScrollToMakeVisible(*this, gfx::Rect(r.x(), r.y(), 0, 0));
807 case IA2_SCROLL_TYPE_BOTTOM_RIGHT:
808 manager_->ScrollToMakeVisible(
809 *this, gfx::Rect(r.right(), r.bottom(), 0, 0));
811 case IA2_SCROLL_TYPE_TOP_EDGE:
812 manager_->ScrollToMakeVisible(
813 *this, gfx::Rect(r.x(), r.y(), r.width(), 0));
815 case IA2_SCROLL_TYPE_BOTTOM_EDGE:
816 manager_->ScrollToMakeVisible(
817 *this, gfx::Rect(r.x(), r.bottom(), r.width(), 0));
819 case IA2_SCROLL_TYPE_LEFT_EDGE:
820 manager_->ScrollToMakeVisible(
821 *this, gfx::Rect(r.x(), r.y(), 0, r.height()));
823 case IA2_SCROLL_TYPE_RIGHT_EDGE:
824 manager_->ScrollToMakeVisible(
825 *this, gfx::Rect(r.right(), r.y(), 0, r.height()));
827 case IA2_SCROLL_TYPE_ANYWHERE:
829 manager_->ScrollToMakeVisible(*this, r);
833 static_cast<BrowserAccessibilityManagerWin*>(manager_)
834 ->TrackScrollingObject(this);
839 STDMETHODIMP BrowserAccessibilityWin::scrollToPoint(
840 enum IA2CoordinateType coordinate_type,
843 if (!instance_active_)
846 gfx::Point scroll_to(x, y);
848 if (coordinate_type == IA2_COORDTYPE_SCREEN_RELATIVE) {
849 scroll_to -= manager_->GetViewBounds().OffsetFromOrigin();
850 } else if (coordinate_type == IA2_COORDTYPE_PARENT_RELATIVE) {
852 scroll_to += parent_->location().OffsetFromOrigin();
857 manager_->ScrollToPoint(*this, scroll_to);
859 static_cast<BrowserAccessibilityManagerWin*>(manager_)
860 ->TrackScrollingObject(this);
865 STDMETHODIMP BrowserAccessibilityWin::get_groupPosition(
867 LONG* similar_items_in_group,
868 LONG* position_in_group) {
869 if (!instance_active_)
872 if (!group_level || !similar_items_in_group || !position_in_group)
875 if (role_ == WebKit::WebAXRoleListBoxOption &&
877 parent_->role() == WebKit::WebAXRoleListBox) {
879 *similar_items_in_group = parent_->PlatformChildCount();
880 *position_in_group = index_in_parent_ + 1;
888 // IAccessibleApplication methods.
891 STDMETHODIMP BrowserAccessibilityWin::get_appName(BSTR* app_name) {
892 // No need to check |instance_active_| because this interface is
893 // global, and doesn't depend on any local state.
898 // GetProduct() returns a string like "Chrome/aa.bb.cc.dd", split out
899 // the part before the "/".
900 std::vector<std::string> product_components;
901 base::SplitString(GetContentClient()->GetProduct(), '/', &product_components);
902 DCHECK_EQ(2U, product_components.size());
903 if (product_components.size() != 2)
905 *app_name = SysAllocString(UTF8ToUTF16(product_components[0]).c_str());
907 return *app_name ? S_OK : E_FAIL;
910 STDMETHODIMP BrowserAccessibilityWin::get_appVersion(BSTR* app_version) {
911 // No need to check |instance_active_| because this interface is
912 // global, and doesn't depend on any local state.
917 // GetProduct() returns a string like "Chrome/aa.bb.cc.dd", split out
918 // the part after the "/".
919 std::vector<std::string> product_components;
920 base::SplitString(GetContentClient()->GetProduct(), '/', &product_components);
921 DCHECK_EQ(2U, product_components.size());
922 if (product_components.size() != 2)
924 *app_version = SysAllocString(UTF8ToUTF16(product_components[1]).c_str());
925 DCHECK(*app_version);
926 return *app_version ? S_OK : E_FAIL;
929 STDMETHODIMP BrowserAccessibilityWin::get_toolkitName(BSTR* toolkit_name) {
930 // No need to check |instance_active_| because this interface is
931 // global, and doesn't depend on any local state.
936 // This is hard-coded; all products based on the Chromium engine
937 // will have the same toolkit name, so that assistive technology can
938 // detect any Chrome-based product.
939 *toolkit_name = SysAllocString(L"Chrome");
940 DCHECK(*toolkit_name);
941 return *toolkit_name ? S_OK : E_FAIL;
944 STDMETHODIMP BrowserAccessibilityWin::get_toolkitVersion(
945 BSTR* toolkit_version) {
946 // No need to check |instance_active_| because this interface is
947 // global, and doesn't depend on any local state.
949 if (!toolkit_version)
952 std::string user_agent = GetContentClient()->GetUserAgent();
953 *toolkit_version = SysAllocString(UTF8ToUTF16(user_agent).c_str());
954 DCHECK(*toolkit_version);
955 return *toolkit_version ? S_OK : E_FAIL;
959 // IAccessibleImage methods.
962 STDMETHODIMP BrowserAccessibilityWin::get_description(BSTR* desc) {
963 if (!instance_active_)
969 return GetStringAttributeAsBstr(
970 AccessibilityNodeData::ATTR_DESCRIPTION, desc);
973 STDMETHODIMP BrowserAccessibilityWin::get_imagePosition(
974 enum IA2CoordinateType coordinate_type,
977 if (!instance_active_)
983 if (coordinate_type == IA2_COORDTYPE_SCREEN_RELATIVE) {
985 manager_->ToBrowserAccessibilityManagerWin()->parent_hwnd();
986 POINT top_left = {0, 0};
987 ::ClientToScreen(parent_hwnd, &top_left);
988 *x = location_.x() + top_left.x;
989 *y = location_.y() + top_left.y;
990 } else if (coordinate_type == IA2_COORDTYPE_PARENT_RELATIVE) {
994 *x -= parent_->location().x();
995 *y -= parent_->location().y();
1004 STDMETHODIMP BrowserAccessibilityWin::get_imageSize(LONG* height, LONG* width) {
1005 if (!instance_active_)
1008 if (!height || !width)
1009 return E_INVALIDARG;
1011 *height = location_.height();
1012 *width = location_.width();
1017 // IAccessibleTable methods.
1020 STDMETHODIMP BrowserAccessibilityWin::get_accessibleAt(
1023 IUnknown** accessible) {
1024 if (!instance_active_)
1028 return E_INVALIDARG;
1032 if (!GetIntAttribute(
1033 AccessibilityNodeData::ATTR_TABLE_COLUMN_COUNT, &columns) ||
1035 AccessibilityNodeData::ATTR_TABLE_ROW_COUNT, &rows) ||
1041 if (row < 0 || row >= rows || column < 0 || column >= columns)
1042 return E_INVALIDARG;
1044 const std::vector<int32>& cell_ids = GetIntListAttribute(
1045 AccessibilityNodeData::ATTR_CELL_IDS);
1046 DCHECK_EQ(columns * rows, static_cast<int>(cell_ids.size()));
1048 int cell_id = cell_ids[row * columns + column];
1049 BrowserAccessibilityWin* cell = GetFromRendererID(cell_id);
1051 *accessible = static_cast<IAccessible*>(cell->NewReference());
1056 return E_INVALIDARG;
1059 STDMETHODIMP BrowserAccessibilityWin::get_caption(IUnknown** accessible) {
1060 if (!instance_active_)
1064 return E_INVALIDARG;
1066 // TODO(dmazzoni): implement
1070 STDMETHODIMP BrowserAccessibilityWin::get_childIndex(long row,
1073 if (!instance_active_)
1077 return E_INVALIDARG;
1081 if (!GetIntAttribute(
1082 AccessibilityNodeData::ATTR_TABLE_COLUMN_COUNT, &columns) ||
1084 AccessibilityNodeData::ATTR_TABLE_ROW_COUNT, &rows) ||
1090 if (row < 0 || row >= rows || column < 0 || column >= columns)
1091 return E_INVALIDARG;
1093 const std::vector<int32>& cell_ids = GetIntListAttribute(
1094 AccessibilityNodeData::ATTR_CELL_IDS);
1095 const std::vector<int32>& unique_cell_ids = GetIntListAttribute(
1096 AccessibilityNodeData::ATTR_UNIQUE_CELL_IDS);
1097 DCHECK_EQ(columns * rows, static_cast<int>(cell_ids.size()));
1098 int cell_id = cell_ids[row * columns + column];
1099 for (size_t i = 0; i < unique_cell_ids.size(); ++i) {
1100 if (unique_cell_ids[i] == cell_id) {
1101 *cell_index = (long)i;
1109 STDMETHODIMP BrowserAccessibilityWin::get_columnDescription(long column,
1110 BSTR* description) {
1111 if (!instance_active_)
1115 return E_INVALIDARG;
1119 if (!GetIntAttribute(
1120 AccessibilityNodeData::ATTR_TABLE_COLUMN_COUNT, &columns) ||
1121 !GetIntAttribute(AccessibilityNodeData::ATTR_TABLE_ROW_COUNT, &rows) ||
1127 if (column < 0 || column >= columns)
1128 return E_INVALIDARG;
1130 const std::vector<int32>& cell_ids = GetIntListAttribute(
1131 AccessibilityNodeData::ATTR_CELL_IDS);
1132 for (int i = 0; i < rows; ++i) {
1133 int cell_id = cell_ids[i * columns + column];
1134 BrowserAccessibilityWin* cell = static_cast<BrowserAccessibilityWin*>(
1135 manager_->GetFromRendererID(cell_id));
1136 if (cell && cell->role_ == WebKit::WebAXRoleColumnHeader) {
1137 string16 cell_name = cell->GetString16Attribute(
1138 AccessibilityNodeData::ATTR_NAME);
1139 if (cell_name.size() > 0) {
1140 *description = SysAllocString(cell_name.c_str());
1144 return cell->GetStringAttributeAsBstr(
1145 AccessibilityNodeData::ATTR_DESCRIPTION, description);
1152 STDMETHODIMP BrowserAccessibilityWin::get_columnExtentAt(
1155 long* n_columns_spanned) {
1156 if (!instance_active_)
1159 if (!n_columns_spanned)
1160 return E_INVALIDARG;
1164 if (!GetIntAttribute(
1165 AccessibilityNodeData::ATTR_TABLE_COLUMN_COUNT, &columns) ||
1166 !GetIntAttribute(AccessibilityNodeData::ATTR_TABLE_ROW_COUNT, &rows) ||
1172 if (row < 0 || row >= rows || column < 0 || column >= columns)
1173 return E_INVALIDARG;
1175 const std::vector<int32>& cell_ids = GetIntListAttribute(
1176 AccessibilityNodeData::ATTR_CELL_IDS);
1177 int cell_id = cell_ids[row * columns + column];
1178 BrowserAccessibilityWin* cell = static_cast<BrowserAccessibilityWin*>(
1179 manager_->GetFromRendererID(cell_id));
1182 cell->GetIntAttribute(
1183 AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_SPAN, &colspan) &&
1185 *n_columns_spanned = colspan;
1192 STDMETHODIMP BrowserAccessibilityWin::get_columnHeader(
1193 IAccessibleTable** accessible_table,
1194 long* starting_row_index) {
1195 // TODO(dmazzoni): implement
1199 STDMETHODIMP BrowserAccessibilityWin::get_columnIndex(long cell_index,
1200 long* column_index) {
1201 if (!instance_active_)
1205 return E_INVALIDARG;
1207 const std::vector<int32>& unique_cell_ids = GetIntListAttribute(
1208 AccessibilityNodeData::ATTR_UNIQUE_CELL_IDS);
1209 int cell_id_count = static_cast<int>(unique_cell_ids.size());
1211 return E_INVALIDARG;
1212 if (cell_index >= cell_id_count)
1215 int cell_id = unique_cell_ids[cell_index];
1216 BrowserAccessibilityWin* cell =
1217 manager_->GetFromRendererID(cell_id)->ToBrowserAccessibilityWin();
1220 cell->GetIntAttribute(
1221 AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_INDEX, &col_index)) {
1222 *column_index = col_index;
1229 STDMETHODIMP BrowserAccessibilityWin::get_nColumns(long* column_count) {
1230 if (!instance_active_)
1234 return E_INVALIDARG;
1237 if (GetIntAttribute(
1238 AccessibilityNodeData::ATTR_TABLE_COLUMN_COUNT, &columns)) {
1239 *column_count = columns;
1246 STDMETHODIMP BrowserAccessibilityWin::get_nRows(long* row_count) {
1247 if (!instance_active_)
1251 return E_INVALIDARG;
1254 if (GetIntAttribute(AccessibilityNodeData::ATTR_TABLE_ROW_COUNT, &rows)) {
1262 STDMETHODIMP BrowserAccessibilityWin::get_nSelectedChildren(long* cell_count) {
1263 if (!instance_active_)
1267 return E_INVALIDARG;
1269 // TODO(dmazzoni): add support for selected cells/rows/columns in tables.
1274 STDMETHODIMP BrowserAccessibilityWin::get_nSelectedColumns(long* column_count) {
1275 if (!instance_active_)
1279 return E_INVALIDARG;
1285 STDMETHODIMP BrowserAccessibilityWin::get_nSelectedRows(long* row_count) {
1286 if (!instance_active_)
1290 return E_INVALIDARG;
1296 STDMETHODIMP BrowserAccessibilityWin::get_rowDescription(long row,
1297 BSTR* description) {
1298 if (!instance_active_)
1302 return E_INVALIDARG;
1306 if (!GetIntAttribute(
1307 AccessibilityNodeData::ATTR_TABLE_COLUMN_COUNT, &columns) ||
1308 !GetIntAttribute(AccessibilityNodeData::ATTR_TABLE_ROW_COUNT, &rows) ||
1314 if (row < 0 || row >= rows)
1315 return E_INVALIDARG;
1317 const std::vector<int32>& cell_ids = GetIntListAttribute(
1318 AccessibilityNodeData::ATTR_CELL_IDS);
1319 for (int i = 0; i < columns; ++i) {
1320 int cell_id = cell_ids[row * columns + i];
1321 BrowserAccessibilityWin* cell =
1322 manager_->GetFromRendererID(cell_id)->ToBrowserAccessibilityWin();
1323 if (cell && cell->role_ == WebKit::WebAXRoleRowHeader) {
1324 string16 cell_name = cell->GetString16Attribute(
1325 AccessibilityNodeData::ATTR_NAME);
1326 if (cell_name.size() > 0) {
1327 *description = SysAllocString(cell_name.c_str());
1331 return cell->GetStringAttributeAsBstr(
1332 AccessibilityNodeData::ATTR_DESCRIPTION, description);
1339 STDMETHODIMP BrowserAccessibilityWin::get_rowExtentAt(long row,
1341 long* n_rows_spanned) {
1342 if (!instance_active_)
1345 if (!n_rows_spanned)
1346 return E_INVALIDARG;
1350 if (!GetIntAttribute(
1351 AccessibilityNodeData::ATTR_TABLE_COLUMN_COUNT, &columns) ||
1352 !GetIntAttribute(AccessibilityNodeData::ATTR_TABLE_ROW_COUNT, &rows) ||
1358 if (row < 0 || row >= rows || column < 0 || column >= columns)
1359 return E_INVALIDARG;
1361 const std::vector<int32>& cell_ids = GetIntListAttribute(
1362 AccessibilityNodeData::ATTR_CELL_IDS);
1363 int cell_id = cell_ids[row * columns + column];
1364 BrowserAccessibilityWin* cell =
1365 manager_->GetFromRendererID(cell_id)->ToBrowserAccessibilityWin();
1368 cell->GetIntAttribute(
1369 AccessibilityNodeData::ATTR_TABLE_CELL_ROW_SPAN, &rowspan) &&
1371 *n_rows_spanned = rowspan;
1378 STDMETHODIMP BrowserAccessibilityWin::get_rowHeader(
1379 IAccessibleTable** accessible_table,
1380 long* starting_column_index) {
1381 // TODO(dmazzoni): implement
1385 STDMETHODIMP BrowserAccessibilityWin::get_rowIndex(long cell_index,
1387 if (!instance_active_)
1391 return E_INVALIDARG;
1393 const std::vector<int32>& unique_cell_ids = GetIntListAttribute(
1394 AccessibilityNodeData::ATTR_UNIQUE_CELL_IDS);
1395 int cell_id_count = static_cast<int>(unique_cell_ids.size());
1397 return E_INVALIDARG;
1398 if (cell_index >= cell_id_count)
1401 int cell_id = unique_cell_ids[cell_index];
1402 BrowserAccessibilityWin* cell =
1403 manager_->GetFromRendererID(cell_id)->ToBrowserAccessibilityWin();
1406 cell->GetIntAttribute(
1407 AccessibilityNodeData::ATTR_TABLE_CELL_ROW_INDEX, &cell_row_index)) {
1408 *row_index = cell_row_index;
1415 STDMETHODIMP BrowserAccessibilityWin::get_selectedChildren(long max_children,
1418 if (!instance_active_)
1421 if (!children || !n_children)
1422 return E_INVALIDARG;
1424 // TODO(dmazzoni): Implement this.
1429 STDMETHODIMP BrowserAccessibilityWin::get_selectedColumns(long max_columns,
1432 if (!instance_active_)
1435 if (!columns || !n_columns)
1436 return E_INVALIDARG;
1438 // TODO(dmazzoni): Implement this.
1443 STDMETHODIMP BrowserAccessibilityWin::get_selectedRows(long max_rows,
1446 if (!instance_active_)
1449 if (!rows || !n_rows)
1450 return E_INVALIDARG;
1452 // TODO(dmazzoni): Implement this.
1457 STDMETHODIMP BrowserAccessibilityWin::get_summary(IUnknown** accessible) {
1458 if (!instance_active_)
1462 return E_INVALIDARG;
1464 // TODO(dmazzoni): implement
1468 STDMETHODIMP BrowserAccessibilityWin::get_isColumnSelected(
1470 boolean* is_selected) {
1471 if (!instance_active_)
1475 return E_INVALIDARG;
1477 // TODO(dmazzoni): Implement this.
1478 *is_selected = false;
1482 STDMETHODIMP BrowserAccessibilityWin::get_isRowSelected(long row,
1483 boolean* is_selected) {
1484 if (!instance_active_)
1488 return E_INVALIDARG;
1490 // TODO(dmazzoni): Implement this.
1491 *is_selected = false;
1495 STDMETHODIMP BrowserAccessibilityWin::get_isSelected(long row,
1497 boolean* is_selected) {
1498 if (!instance_active_)
1502 return E_INVALIDARG;
1504 // TODO(dmazzoni): Implement this.
1505 *is_selected = false;
1509 STDMETHODIMP BrowserAccessibilityWin::get_rowColumnExtentsAtIndex(
1514 long* column_extents,
1515 boolean* is_selected) {
1516 if (!instance_active_)
1519 if (!row || !column || !row_extents || !column_extents || !is_selected)
1520 return E_INVALIDARG;
1522 const std::vector<int32>& unique_cell_ids = GetIntListAttribute(
1523 AccessibilityNodeData::ATTR_UNIQUE_CELL_IDS);
1524 int cell_id_count = static_cast<int>(unique_cell_ids.size());
1526 return E_INVALIDARG;
1527 if (index >= cell_id_count)
1530 int cell_id = unique_cell_ids[index];
1531 BrowserAccessibilityWin* cell =
1532 manager_->GetFromRendererID(cell_id)->ToBrowserAccessibilityWin();
1536 cell->GetIntAttribute(
1537 AccessibilityNodeData::ATTR_TABLE_CELL_ROW_SPAN, &rowspan) &&
1538 cell->GetIntAttribute(
1539 AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_SPAN, &colspan) &&
1542 *row_extents = rowspan;
1543 *column_extents = colspan;
1551 // IAccessibleTable2 methods.
1554 STDMETHODIMP BrowserAccessibilityWin::get_cellAt(long row,
1557 return get_accessibleAt(row, column, cell);
1560 STDMETHODIMP BrowserAccessibilityWin::get_nSelectedCells(long* cell_count) {
1561 return get_nSelectedChildren(cell_count);
1564 STDMETHODIMP BrowserAccessibilityWin::get_selectedCells(
1566 long* n_selected_cells) {
1567 if (!instance_active_)
1570 if (!cells || !n_selected_cells)
1571 return E_INVALIDARG;
1573 // TODO(dmazzoni): Implement this.
1574 *n_selected_cells = 0;
1578 STDMETHODIMP BrowserAccessibilityWin::get_selectedColumns(long** columns,
1580 if (!instance_active_)
1583 if (!columns || !n_columns)
1584 return E_INVALIDARG;
1586 // TODO(dmazzoni): Implement this.
1591 STDMETHODIMP BrowserAccessibilityWin::get_selectedRows(long** rows,
1593 if (!instance_active_)
1596 if (!rows || !n_rows)
1597 return E_INVALIDARG;
1599 // TODO(dmazzoni): Implement this.
1606 // IAccessibleTableCell methods.
1609 STDMETHODIMP BrowserAccessibilityWin::get_columnExtent(
1610 long* n_columns_spanned) {
1611 if (!instance_active_)
1614 if (!n_columns_spanned)
1615 return E_INVALIDARG;
1618 if (GetIntAttribute(
1619 AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_SPAN, &colspan) &&
1621 *n_columns_spanned = colspan;
1628 STDMETHODIMP BrowserAccessibilityWin::get_columnHeaderCells(
1629 IUnknown*** cell_accessibles,
1630 long* n_column_header_cells) {
1631 if (!instance_active_)
1634 if (!cell_accessibles || !n_column_header_cells)
1635 return E_INVALIDARG;
1637 *n_column_header_cells = 0;
1640 if (!GetIntAttribute(
1641 AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_INDEX, &column)) {
1645 BrowserAccessibility* table = parent();
1646 while (table && table->role() != WebKit::WebAXRoleTable)
1647 table = table->parent();
1655 if (!table->GetIntAttribute(
1656 AccessibilityNodeData::ATTR_TABLE_COLUMN_COUNT, &columns) ||
1657 !table->GetIntAttribute(
1658 AccessibilityNodeData::ATTR_TABLE_ROW_COUNT, &rows)) {
1661 if (columns <= 0 || rows <= 0 || column < 0 || column >= columns)
1664 const std::vector<int32>& cell_ids = table->GetIntListAttribute(
1665 AccessibilityNodeData::ATTR_CELL_IDS);
1667 for (int i = 0; i < rows; ++i) {
1668 int cell_id = cell_ids[i * columns + column];
1669 BrowserAccessibilityWin* cell =
1670 manager_->GetFromRendererID(cell_id)->ToBrowserAccessibilityWin();
1671 if (cell && cell->role_ == WebKit::WebAXRoleColumnHeader)
1672 (*n_column_header_cells)++;
1675 *cell_accessibles = static_cast<IUnknown**>(CoTaskMemAlloc(
1676 (*n_column_header_cells) * sizeof(cell_accessibles[0])));
1678 for (int i = 0; i < rows; ++i) {
1679 int cell_id = cell_ids[i * columns + column];
1680 BrowserAccessibilityWin* cell =
1681 manager_->GetFromRendererID(cell_id)->ToBrowserAccessibilityWin();
1682 if (cell && cell->role_ == WebKit::WebAXRoleColumnHeader) {
1683 (*cell_accessibles)[index] =
1684 static_cast<IAccessible*>(cell->NewReference());
1692 STDMETHODIMP BrowserAccessibilityWin::get_columnIndex(long* column_index) {
1693 if (!instance_active_)
1697 return E_INVALIDARG;
1700 if (GetIntAttribute(
1701 AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_INDEX, &column)) {
1702 *column_index = column;
1709 STDMETHODIMP BrowserAccessibilityWin::get_rowExtent(long* n_rows_spanned) {
1710 if (!instance_active_)
1713 if (!n_rows_spanned)
1714 return E_INVALIDARG;
1717 if (GetIntAttribute(
1718 AccessibilityNodeData::ATTR_TABLE_CELL_ROW_SPAN, &rowspan) &&
1720 *n_rows_spanned = rowspan;
1727 STDMETHODIMP BrowserAccessibilityWin::get_rowHeaderCells(
1728 IUnknown*** cell_accessibles,
1729 long* n_row_header_cells) {
1730 if (!instance_active_)
1733 if (!cell_accessibles || !n_row_header_cells)
1734 return E_INVALIDARG;
1736 *n_row_header_cells = 0;
1739 if (!GetIntAttribute(
1740 AccessibilityNodeData::ATTR_TABLE_CELL_ROW_INDEX, &row)) {
1744 BrowserAccessibility* table = parent();
1745 while (table && table->role() != WebKit::WebAXRoleTable)
1746 table = table->parent();
1754 if (!table->GetIntAttribute(
1755 AccessibilityNodeData::ATTR_TABLE_COLUMN_COUNT, &columns) ||
1756 !table->GetIntAttribute(
1757 AccessibilityNodeData::ATTR_TABLE_ROW_COUNT, &rows)) {
1760 if (columns <= 0 || rows <= 0 || row < 0 || row >= rows)
1763 const std::vector<int32>& cell_ids = table->GetIntListAttribute(
1764 AccessibilityNodeData::ATTR_CELL_IDS);
1766 for (int i = 0; i < columns; ++i) {
1767 int cell_id = cell_ids[row * columns + i];
1768 BrowserAccessibilityWin* cell =
1769 manager_->GetFromRendererID(cell_id)->ToBrowserAccessibilityWin();
1770 if (cell && cell->role_ == WebKit::WebAXRoleRowHeader)
1771 (*n_row_header_cells)++;
1774 *cell_accessibles = static_cast<IUnknown**>(CoTaskMemAlloc(
1775 (*n_row_header_cells) * sizeof(cell_accessibles[0])));
1777 for (int i = 0; i < columns; ++i) {
1778 int cell_id = cell_ids[row * columns + i];
1779 BrowserAccessibilityWin* cell =
1780 manager_->GetFromRendererID(cell_id)->ToBrowserAccessibilityWin();
1781 if (cell && cell->role_ == WebKit::WebAXRoleRowHeader) {
1782 (*cell_accessibles)[index] =
1783 static_cast<IAccessible*>(cell->NewReference());
1791 STDMETHODIMP BrowserAccessibilityWin::get_rowIndex(long* row_index) {
1792 if (!instance_active_)
1796 return E_INVALIDARG;
1799 if (GetIntAttribute(AccessibilityNodeData::ATTR_TABLE_CELL_ROW_INDEX, &row)) {
1806 STDMETHODIMP BrowserAccessibilityWin::get_isSelected(boolean* is_selected) {
1807 if (!instance_active_)
1811 return E_INVALIDARG;
1813 *is_selected = false;
1817 STDMETHODIMP BrowserAccessibilityWin::get_rowColumnExtents(
1821 long* column_extents,
1822 boolean* is_selected) {
1823 if (!instance_active_)
1831 return E_INVALIDARG;
1838 if (GetIntAttribute(AccessibilityNodeData::ATTR_TABLE_CELL_ROW_INDEX, &row) &&
1840 AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_INDEX, &column) &&
1842 AccessibilityNodeData::ATTR_TABLE_CELL_ROW_SPAN, &rowspan) &&
1844 AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_SPAN, &colspan)) {
1846 *column_index = column;
1847 *row_extents = rowspan;
1848 *column_extents = colspan;
1849 *is_selected = false;
1856 STDMETHODIMP BrowserAccessibilityWin::get_table(IUnknown** table) {
1857 if (!instance_active_)
1861 return E_INVALIDARG;
1866 GetIntAttribute(AccessibilityNodeData::ATTR_TABLE_CELL_ROW_INDEX, &row);
1867 GetIntAttribute(AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_INDEX, &column);
1869 BrowserAccessibility* find_table = parent();
1870 while (find_table && find_table->role() != WebKit::WebAXRoleTable)
1871 find_table = find_table->parent();
1877 *table = static_cast<IAccessibleTable*>(
1878 find_table->ToBrowserAccessibilityWin()->NewReference());
1884 // IAccessibleText methods.
1887 STDMETHODIMP BrowserAccessibilityWin::get_nCharacters(LONG* n_characters) {
1888 if (!instance_active_)
1892 return E_INVALIDARG;
1894 *n_characters = TextForIAccessibleText().length();
1898 STDMETHODIMP BrowserAccessibilityWin::get_caretOffset(LONG* offset) {
1899 if (!instance_active_)
1903 return E_INVALIDARG;
1906 if (role_ == WebKit::WebAXRoleTextField ||
1907 role_ == WebKit::WebAXRoleTextArea) {
1909 if (GetIntAttribute(AccessibilityNodeData::ATTR_TEXT_SEL_START,
1911 *offset = sel_start;
1917 STDMETHODIMP BrowserAccessibilityWin::get_nSelections(LONG* n_selections) {
1918 if (!instance_active_)
1922 return E_INVALIDARG;
1925 if (role_ == WebKit::WebAXRoleTextField ||
1926 role_ == WebKit::WebAXRoleTextArea) {
1929 if (GetIntAttribute(AccessibilityNodeData::ATTR_TEXT_SEL_START,
1931 GetIntAttribute(AccessibilityNodeData::ATTR_TEXT_SEL_END, &sel_end) &&
1932 sel_start != sel_end)
1939 STDMETHODIMP BrowserAccessibilityWin::get_selection(LONG selection_index,
1942 if (!instance_active_)
1945 if (!start_offset || !end_offset || selection_index != 0)
1946 return E_INVALIDARG;
1950 if (role_ == WebKit::WebAXRoleTextField ||
1951 role_ == WebKit::WebAXRoleTextArea) {
1954 if (GetIntAttribute(
1955 AccessibilityNodeData::ATTR_TEXT_SEL_START, &sel_start) &&
1956 GetIntAttribute(AccessibilityNodeData::ATTR_TEXT_SEL_END, &sel_end)) {
1957 *start_offset = sel_start;
1958 *end_offset = sel_end;
1965 STDMETHODIMP BrowserAccessibilityWin::get_text(LONG start_offset,
1968 if (!instance_active_)
1972 return E_INVALIDARG;
1974 const string16& text_str = TextForIAccessibleText();
1976 // Handle special text offsets.
1977 HandleSpecialTextOffset(text_str, &start_offset);
1978 HandleSpecialTextOffset(text_str, &end_offset);
1980 // The spec allows the arguments to be reversed.
1981 if (start_offset > end_offset) {
1982 LONG tmp = start_offset;
1983 start_offset = end_offset;
1987 // The spec does not allow the start or end offsets to be out or range;
1988 // we must return an error if so.
1989 LONG len = text_str.length();
1990 if (start_offset < 0)
1991 return E_INVALIDARG;
1992 if (end_offset > len)
1993 return E_INVALIDARG;
1995 string16 substr = text_str.substr(start_offset, end_offset - start_offset);
1999 *text = SysAllocString(substr.c_str());
2004 STDMETHODIMP BrowserAccessibilityWin::get_textAtOffset(
2006 enum IA2TextBoundaryType boundary_type,
2010 if (!instance_active_)
2013 if (!start_offset || !end_offset || !text)
2014 return E_INVALIDARG;
2016 // The IAccessible2 spec says we don't have to implement the "sentence"
2017 // boundary type, we can just let the screenreader handle it.
2018 if (boundary_type == IA2_TEXT_BOUNDARY_SENTENCE) {
2025 const string16& text_str = TextForIAccessibleText();
2027 *start_offset = FindBoundary(
2028 text_str, boundary_type, offset, ui::BACKWARDS_DIRECTION);
2029 *end_offset = FindBoundary(
2030 text_str, boundary_type, offset, ui::FORWARDS_DIRECTION);
2031 return get_text(*start_offset, *end_offset, text);
2034 STDMETHODIMP BrowserAccessibilityWin::get_textBeforeOffset(
2036 enum IA2TextBoundaryType boundary_type,
2040 if (!instance_active_)
2043 if (!start_offset || !end_offset || !text)
2044 return E_INVALIDARG;
2046 // The IAccessible2 spec says we don't have to implement the "sentence"
2047 // boundary type, we can just let the screenreader handle it.
2048 if (boundary_type == IA2_TEXT_BOUNDARY_SENTENCE) {
2055 const string16& text_str = TextForIAccessibleText();
2057 *start_offset = FindBoundary(
2058 text_str, boundary_type, offset, ui::BACKWARDS_DIRECTION);
2059 *end_offset = offset;
2060 return get_text(*start_offset, *end_offset, text);
2063 STDMETHODIMP BrowserAccessibilityWin::get_textAfterOffset(
2065 enum IA2TextBoundaryType boundary_type,
2069 if (!instance_active_)
2072 if (!start_offset || !end_offset || !text)
2073 return E_INVALIDARG;
2075 // The IAccessible2 spec says we don't have to implement the "sentence"
2076 // boundary type, we can just let the screenreader handle it.
2077 if (boundary_type == IA2_TEXT_BOUNDARY_SENTENCE) {
2084 const string16& text_str = TextForIAccessibleText();
2086 *start_offset = offset;
2087 *end_offset = FindBoundary(
2088 text_str, boundary_type, offset, ui::FORWARDS_DIRECTION);
2089 return get_text(*start_offset, *end_offset, text);
2092 STDMETHODIMP BrowserAccessibilityWin::get_newText(IA2TextSegment* new_text) {
2093 if (!instance_active_)
2097 return E_INVALIDARG;
2099 string16 text = TextForIAccessibleText();
2101 new_text->text = SysAllocString(text.c_str());
2102 new_text->start = 0;
2103 new_text->end = static_cast<long>(text.size());
2107 STDMETHODIMP BrowserAccessibilityWin::get_oldText(IA2TextSegment* old_text) {
2108 if (!instance_active_)
2112 return E_INVALIDARG;
2114 old_text->text = SysAllocString(old_text_.c_str());
2115 old_text->start = 0;
2116 old_text->end = static_cast<long>(old_text_.size());
2120 STDMETHODIMP BrowserAccessibilityWin::get_offsetAtPoint(
2123 enum IA2CoordinateType coord_type,
2125 if (!instance_active_)
2129 return E_INVALIDARG;
2131 // TODO(dmazzoni): implement this. We're returning S_OK for now so that
2132 // screen readers still return partially accurate results rather than
2133 // completely failing.
2138 STDMETHODIMP BrowserAccessibilityWin::scrollSubstringTo(
2141 enum IA2ScrollType scroll_type) {
2142 // TODO(dmazzoni): adjust this for the start and end index, too.
2143 return scrollTo(scroll_type);
2146 STDMETHODIMP BrowserAccessibilityWin::scrollSubstringToPoint(
2149 enum IA2CoordinateType coordinate_type,
2151 // TODO(dmazzoni): adjust this for the start and end index, too.
2152 return scrollToPoint(coordinate_type, x, y);
2155 STDMETHODIMP BrowserAccessibilityWin::addSelection(LONG start_offset,
2157 if (!instance_active_)
2160 const string16& text_str = TextForIAccessibleText();
2161 HandleSpecialTextOffset(text_str, &start_offset);
2162 HandleSpecialTextOffset(text_str, &end_offset);
2164 manager_->SetTextSelection(*this, start_offset, end_offset);
2168 STDMETHODIMP BrowserAccessibilityWin::removeSelection(LONG selection_index) {
2169 if (!instance_active_)
2172 if (selection_index != 0)
2173 return E_INVALIDARG;
2175 manager_->SetTextSelection(*this, 0, 0);
2179 STDMETHODIMP BrowserAccessibilityWin::setCaretOffset(LONG offset) {
2180 if (!instance_active_)
2183 const string16& text_str = TextForIAccessibleText();
2184 HandleSpecialTextOffset(text_str, &offset);
2185 manager_->SetTextSelection(*this, offset, offset);
2189 STDMETHODIMP BrowserAccessibilityWin::setSelection(LONG selection_index,
2192 if (!instance_active_)
2195 if (selection_index != 0)
2196 return E_INVALIDARG;
2198 const string16& text_str = TextForIAccessibleText();
2199 HandleSpecialTextOffset(text_str, &start_offset);
2200 HandleSpecialTextOffset(text_str, &end_offset);
2202 manager_->SetTextSelection(*this, start_offset, end_offset);
2207 // IAccessibleHypertext methods.
2210 STDMETHODIMP BrowserAccessibilityWin::get_nHyperlinks(long* hyperlink_count) {
2211 if (!instance_active_)
2214 if (!hyperlink_count)
2215 return E_INVALIDARG;
2217 *hyperlink_count = hyperlink_offset_to_index_.size();
2221 STDMETHODIMP BrowserAccessibilityWin::get_hyperlink(
2223 IAccessibleHyperlink** hyperlink) {
2224 if (!instance_active_)
2229 index >= static_cast<long>(hyperlinks_.size())) {
2230 return E_INVALIDARG;
2233 BrowserAccessibilityWin* child =
2234 children_[hyperlinks_[index]]->ToBrowserAccessibilityWin();
2235 *hyperlink = static_cast<IAccessibleHyperlink*>(child->NewReference());
2239 STDMETHODIMP BrowserAccessibilityWin::get_hyperlinkIndex(
2241 long* hyperlink_index) {
2242 if (!instance_active_)
2245 if (!hyperlink_index)
2246 return E_INVALIDARG;
2248 *hyperlink_index = -1;
2250 if (char_index < 0 || char_index >= static_cast<long>(hypertext_.size()))
2251 return E_INVALIDARG;
2253 std::map<int32, int32>::iterator it =
2254 hyperlink_offset_to_index_.find(char_index);
2255 if (it == hyperlink_offset_to_index_.end())
2258 *hyperlink_index = it->second;
2263 // IAccessibleValue methods.
2266 STDMETHODIMP BrowserAccessibilityWin::get_currentValue(VARIANT* value) {
2267 if (!instance_active_)
2271 return E_INVALIDARG;
2274 if (GetFloatAttribute(
2275 AccessibilityNodeData::ATTR_VALUE_FOR_RANGE, &float_val)) {
2277 value->dblVal = float_val;
2281 value->vt = VT_EMPTY;
2285 STDMETHODIMP BrowserAccessibilityWin::get_minimumValue(VARIANT* value) {
2286 if (!instance_active_)
2290 return E_INVALIDARG;
2293 if (GetFloatAttribute(AccessibilityNodeData::ATTR_MIN_VALUE_FOR_RANGE,
2296 value->dblVal = float_val;
2300 value->vt = VT_EMPTY;
2304 STDMETHODIMP BrowserAccessibilityWin::get_maximumValue(VARIANT* value) {
2305 if (!instance_active_)
2309 return E_INVALIDARG;
2312 if (GetFloatAttribute(AccessibilityNodeData::ATTR_MAX_VALUE_FOR_RANGE,
2315 value->dblVal = float_val;
2319 value->vt = VT_EMPTY;
2323 STDMETHODIMP BrowserAccessibilityWin::setCurrentValue(VARIANT new_value) {
2324 // TODO(dmazzoni): Implement this.
2329 // ISimpleDOMDocument methods.
2332 STDMETHODIMP BrowserAccessibilityWin::get_URL(BSTR* url) {
2333 if (!instance_active_)
2337 return E_INVALIDARG;
2339 return GetStringAttributeAsBstr(AccessibilityNodeData::ATTR_DOC_URL, url);
2342 STDMETHODIMP BrowserAccessibilityWin::get_title(BSTR* title) {
2343 if (!instance_active_)
2347 return E_INVALIDARG;
2349 return GetStringAttributeAsBstr(AccessibilityNodeData::ATTR_DOC_TITLE, title);
2352 STDMETHODIMP BrowserAccessibilityWin::get_mimeType(BSTR* mime_type) {
2353 if (!instance_active_)
2357 return E_INVALIDARG;
2359 return GetStringAttributeAsBstr(
2360 AccessibilityNodeData::ATTR_DOC_MIMETYPE, mime_type);
2363 STDMETHODIMP BrowserAccessibilityWin::get_docType(BSTR* doc_type) {
2364 if (!instance_active_)
2368 return E_INVALIDARG;
2370 return GetStringAttributeAsBstr(
2371 AccessibilityNodeData::ATTR_DOC_DOCTYPE, doc_type);
2375 // ISimpleDOMNode methods.
2378 STDMETHODIMP BrowserAccessibilityWin::get_nodeInfo(
2380 short* name_space_id,
2382 unsigned int* num_children,
2383 unsigned int* unique_id,
2384 unsigned short* node_type) {
2385 if (!instance_active_)
2388 if (!node_name || !name_space_id || !node_value || !num_children ||
2389 !unique_id || !node_type) {
2390 return E_INVALIDARG;
2394 if (GetString16Attribute(AccessibilityNodeData::ATTR_HTML_TAG, &tag))
2395 *node_name = SysAllocString(tag.c_str());
2400 *node_value = SysAllocString(UTF8ToUTF16(value_).c_str());
2401 *num_children = children_.size();
2402 *unique_id = unique_id_win_;
2404 if (ia_role_ == ROLE_SYSTEM_DOCUMENT) {
2405 *node_type = NODETYPE_DOCUMENT;
2406 } else if (ia_role_ == ROLE_SYSTEM_TEXT &&
2407 ((ia2_state_ & IA2_STATE_EDITABLE) == 0)) {
2408 *node_type = NODETYPE_TEXT;
2410 *node_type = NODETYPE_ELEMENT;
2416 STDMETHODIMP BrowserAccessibilityWin::get_attributes(
2417 unsigned short max_attribs,
2419 short* name_space_id,
2420 BSTR* attrib_values,
2421 unsigned short* num_attribs) {
2422 if (!instance_active_)
2425 if (!attrib_names || !name_space_id || !attrib_values || !num_attribs)
2426 return E_INVALIDARG;
2428 *num_attribs = max_attribs;
2429 if (*num_attribs > html_attributes_.size())
2430 *num_attribs = html_attributes_.size();
2432 for (unsigned short i = 0; i < *num_attribs; ++i) {
2433 attrib_names[i] = SysAllocString(
2434 UTF8ToUTF16(html_attributes_[i].first).c_str());
2435 name_space_id[i] = 0;
2436 attrib_values[i] = SysAllocString(
2437 UTF8ToUTF16(html_attributes_[i].second).c_str());
2442 STDMETHODIMP BrowserAccessibilityWin::get_attributesForNames(
2443 unsigned short num_attribs,
2445 short* name_space_id,
2446 BSTR* attrib_values) {
2447 if (!instance_active_)
2450 if (!attrib_names || !name_space_id || !attrib_values)
2451 return E_INVALIDARG;
2453 for (unsigned short i = 0; i < num_attribs; ++i) {
2454 name_space_id[i] = 0;
2456 std::string name = UTF16ToUTF8((LPCWSTR)attrib_names[i]);
2457 for (unsigned int j = 0; j < html_attributes_.size(); ++j) {
2458 if (html_attributes_[j].first == name) {
2459 attrib_values[i] = SysAllocString(
2460 UTF8ToUTF16(html_attributes_[j].second).c_str());
2466 attrib_values[i] = NULL;
2472 STDMETHODIMP BrowserAccessibilityWin::get_computedStyle(
2473 unsigned short max_style_properties,
2474 boolean use_alternate_view,
2475 BSTR* style_properties,
2477 unsigned short *num_style_properties) {
2478 if (!instance_active_)
2481 if (!style_properties || !style_values)
2482 return E_INVALIDARG;
2484 // We only cache a single style property for now: DISPLAY
2487 if (max_style_properties == 0 ||
2488 !GetString16Attribute(AccessibilityNodeData::ATTR_DISPLAY, &display)) {
2489 *num_style_properties = 0;
2493 *num_style_properties = 1;
2494 style_properties[0] = SysAllocString(L"display");
2495 style_values[0] = SysAllocString(display.c_str());
2500 STDMETHODIMP BrowserAccessibilityWin::get_computedStyleForProperties(
2501 unsigned short num_style_properties,
2502 boolean use_alternate_view,
2503 BSTR* style_properties,
2504 BSTR* style_values) {
2505 if (!instance_active_)
2508 if (!style_properties || !style_values)
2509 return E_INVALIDARG;
2511 // We only cache a single style property for now: DISPLAY
2513 for (unsigned short i = 0; i < num_style_properties; ++i) {
2514 string16 name = (LPCWSTR)style_properties[i];
2515 StringToLowerASCII(&name);
2516 if (name == L"display") {
2517 string16 display = GetString16Attribute(
2518 AccessibilityNodeData::ATTR_DISPLAY);
2519 style_values[i] = SysAllocString(display.c_str());
2521 style_values[i] = NULL;
2528 STDMETHODIMP BrowserAccessibilityWin::scrollTo(boolean placeTopLeft) {
2529 return scrollTo(placeTopLeft ?
2530 IA2_SCROLL_TYPE_TOP_LEFT : IA2_SCROLL_TYPE_ANYWHERE);
2533 STDMETHODIMP BrowserAccessibilityWin::get_parentNode(ISimpleDOMNode** node) {
2534 if (!instance_active_)
2538 return E_INVALIDARG;
2540 *node = parent_->ToBrowserAccessibilityWin()->NewReference();
2544 STDMETHODIMP BrowserAccessibilityWin::get_firstChild(ISimpleDOMNode** node) {
2545 if (!instance_active_)
2549 return E_INVALIDARG;
2551 if (children_.empty()) {
2556 *node = children_[0]->ToBrowserAccessibilityWin()->NewReference();
2560 STDMETHODIMP BrowserAccessibilityWin::get_lastChild(ISimpleDOMNode** node) {
2561 if (!instance_active_)
2565 return E_INVALIDARG;
2567 if (children_.empty()) {
2572 *node = (*children_.rbegin())->ToBrowserAccessibilityWin()->NewReference();
2576 STDMETHODIMP BrowserAccessibilityWin::get_previousSibling(
2577 ISimpleDOMNode** node) {
2578 if (!instance_active_)
2582 return E_INVALIDARG;
2584 if (!parent_ || index_in_parent_ <= 0) {
2589 *node = parent_->children()[index_in_parent_ - 1]->
2590 ToBrowserAccessibilityWin()->NewReference();
2594 STDMETHODIMP BrowserAccessibilityWin::get_nextSibling(ISimpleDOMNode** node) {
2595 if (!instance_active_)
2599 return E_INVALIDARG;
2602 index_in_parent_ < 0 ||
2603 index_in_parent_ >= static_cast<int>(parent_->children().size()) - 1) {
2608 *node = parent_->children()[index_in_parent_ + 1]->
2609 ToBrowserAccessibilityWin()->NewReference();
2613 STDMETHODIMP BrowserAccessibilityWin::get_childAt(
2614 unsigned int child_index,
2615 ISimpleDOMNode** node) {
2616 if (!instance_active_)
2620 return E_INVALIDARG;
2622 BrowserAccessibility* child = PlatformGetChild(child_index);
2628 *node = child->ToBrowserAccessibilityWin()->NewReference();
2633 // ISimpleDOMText methods.
2636 STDMETHODIMP BrowserAccessibilityWin::get_domText(BSTR* dom_text) {
2637 if (!instance_active_)
2641 return E_INVALIDARG;
2643 return GetStringAttributeAsBstr(
2644 AccessibilityNodeData::ATTR_NAME, dom_text);
2648 // IServiceProvider methods.
2651 STDMETHODIMP BrowserAccessibilityWin::QueryService(REFGUID guidService,
2654 if (!instance_active_)
2657 // The system uses IAccessible APIs for many purposes, but only
2658 // assistive technology like screen readers uses IAccessible2.
2659 // Enable full accessibility support when IAccessible2 APIs are queried.
2660 if (riid == IID_IAccessible2)
2661 BrowserAccessibilityStateImpl::GetInstance()->EnableAccessibility();
2663 if (guidService == GUID_IAccessibleContentDocument) {
2664 // Special Mozilla extension: return the accessible for the root document.
2665 // Screen readers use this to distinguish between a document loaded event
2666 // on the root document vs on an iframe.
2667 return manager_->GetRoot()->ToBrowserAccessibilityWin()->QueryInterface(
2668 IID_IAccessible2, object);
2671 if (guidService == IID_IAccessible ||
2672 guidService == IID_IAccessible2 ||
2673 guidService == IID_IAccessibleAction ||
2674 guidService == IID_IAccessibleApplication ||
2675 guidService == IID_IAccessibleHyperlink ||
2676 guidService == IID_IAccessibleHypertext ||
2677 guidService == IID_IAccessibleImage ||
2678 guidService == IID_IAccessibleTable ||
2679 guidService == IID_IAccessibleTable2 ||
2680 guidService == IID_IAccessibleTableCell ||
2681 guidService == IID_IAccessibleText ||
2682 guidService == IID_IAccessibleValue ||
2683 guidService == IID_ISimpleDOMDocument ||
2684 guidService == IID_ISimpleDOMNode ||
2685 guidService == IID_ISimpleDOMText ||
2686 guidService == GUID_ISimpleDOM) {
2687 return QueryInterface(riid, object);
2690 // We only support the IAccessibleEx interface on Windows 8 and above. This
2691 // is needed for the on-screen Keyboard to show up in metro mode, when the
2692 // user taps an editable portion on the page.
2693 // All methods in the IAccessibleEx interface are unimplemented.
2694 if (riid == IID_IAccessibleEx &&
2695 base::win::GetVersion() >= base::win::VERSION_WIN8) {
2696 return QueryInterface(riid, object);
2703 STDMETHODIMP BrowserAccessibilityWin::GetPatternProvider(PATTERNID id,
2704 IUnknown** provider) {
2705 DVLOG(1) << "In Function: "
2707 << " for pattern id: "
2709 if (id == UIA_ValuePatternId || id == UIA_TextPatternId) {
2710 if (IsEditableText()) {
2711 // The BrowserAccessibilityManager keeps track of instances when
2712 // we don't want to show the on-screen keyboard.
2713 if (!manager_->IsOSKAllowed(GetGlobalBoundsRect()))
2716 DVLOG(1) << "Returning UIA text provider";
2717 base::win::UIATextProvider::CreateTextProvider(true, provider);
2724 STDMETHODIMP BrowserAccessibilityWin::GetPropertyValue(PROPERTYID id,
2726 DVLOG(1) << "In Function: "
2728 << " for property id: "
2730 V_VT(ret) = VT_EMPTY;
2731 if (id == UIA_ControlTypePropertyId) {
2732 if (IsEditableText()) {
2734 ret->lVal = UIA_EditControlTypeId;
2735 DVLOG(1) << "Returning Edit control type";
2737 DVLOG(1) << "Returning empty control type";
2744 // CComObjectRootEx methods.
2747 HRESULT WINAPI BrowserAccessibilityWin::InternalQueryInterface(
2749 const _ATL_INTMAP_ENTRY* entries,
2752 if (iid == IID_IAccessibleImage) {
2753 if (ia_role_ != ROLE_SYSTEM_GRAPHIC) {
2755 return E_NOINTERFACE;
2757 } else if (iid == IID_IAccessibleTable || iid == IID_IAccessibleTable2) {
2758 if (ia_role_ != ROLE_SYSTEM_TABLE) {
2760 return E_NOINTERFACE;
2762 } else if (iid == IID_IAccessibleTableCell) {
2763 if (ia_role_ != ROLE_SYSTEM_CELL) {
2765 return E_NOINTERFACE;
2767 } else if (iid == IID_IAccessibleValue) {
2768 if (ia_role_ != ROLE_SYSTEM_PROGRESSBAR &&
2769 ia_role_ != ROLE_SYSTEM_SCROLLBAR &&
2770 ia_role_ != ROLE_SYSTEM_SLIDER) {
2772 return E_NOINTERFACE;
2774 } else if (iid == IID_ISimpleDOMDocument) {
2775 if (ia_role_ != ROLE_SYSTEM_DOCUMENT) {
2777 return E_NOINTERFACE;
2781 return CComObjectRootBase::InternalQueryInterface(
2782 this_ptr, entries, iid, object);
2789 // Initialize this object and mark it as active.
2790 void BrowserAccessibilityWin::PreInitialize() {
2791 BrowserAccessibility::PreInitialize();
2795 // Expose the "display" and "tag" attributes.
2796 StringAttributeToIA2(AccessibilityNodeData::ATTR_DISPLAY, "display");
2797 StringAttributeToIA2(AccessibilityNodeData::ATTR_HTML_TAG, "tag");
2798 StringAttributeToIA2(AccessibilityNodeData::ATTR_ROLE, "xml-roles");
2800 // Expose "level" attribute for headings, trees, etc.
2801 IntAttributeToIA2(AccessibilityNodeData::ATTR_HIERARCHICAL_LEVEL, "level");
2803 // Expose the set size and position in set for listbox options.
2804 if (role_ == WebKit::WebAXRoleListBoxOption &&
2806 parent_->role() == WebKit::WebAXRoleListBox) {
2807 ia2_attributes_.push_back(
2808 L"setsize:" + base::IntToString16(parent_->PlatformChildCount()));
2809 ia2_attributes_.push_back(
2810 L"setsize:" + base::IntToString16(index_in_parent_ + 1));
2813 if (ia_role_ == ROLE_SYSTEM_CHECKBUTTON ||
2814 ia_role_ == ROLE_SYSTEM_RADIOBUTTON ||
2815 ia2_role_ == IA2_ROLE_TOGGLE_BUTTON) {
2816 ia2_attributes_.push_back(L"checkable:true");
2819 // Expose live region attributes.
2820 StringAttributeToIA2(AccessibilityNodeData::ATTR_LIVE_STATUS, "live");
2821 StringAttributeToIA2(AccessibilityNodeData::ATTR_LIVE_RELEVANT, "relevant");
2822 BoolAttributeToIA2(AccessibilityNodeData::ATTR_LIVE_ATOMIC, "atomic");
2823 BoolAttributeToIA2(AccessibilityNodeData::ATTR_LIVE_BUSY, "busy");
2825 // Expose container live region attributes.
2826 StringAttributeToIA2(AccessibilityNodeData::ATTR_CONTAINER_LIVE_STATUS,
2828 StringAttributeToIA2(AccessibilityNodeData::ATTR_CONTAINER_LIVE_RELEVANT,
2829 "container-relevant");
2830 BoolAttributeToIA2(AccessibilityNodeData::ATTR_CONTAINER_LIVE_ATOMIC,
2831 "container-atomic");
2832 BoolAttributeToIA2(AccessibilityNodeData::ATTR_CONTAINER_LIVE_BUSY,
2835 // Expose slider value.
2836 if (ia_role_ == ROLE_SYSTEM_PROGRESSBAR ||
2837 ia_role_ == ROLE_SYSTEM_SCROLLBAR ||
2838 ia_role_ == ROLE_SYSTEM_SLIDER) {
2839 ia2_attributes_.push_back(L"valuetext:" + GetValueText());
2842 // Expose table cell index.
2843 if (ia_role_ == ROLE_SYSTEM_CELL) {
2844 BrowserAccessibility* table = parent();
2845 while (table && table->role() != WebKit::WebAXRoleTable)
2846 table = table->parent();
2848 const std::vector<int32>& unique_cell_ids = table->GetIntListAttribute(
2849 AccessibilityNodeData::ATTR_UNIQUE_CELL_IDS);
2850 for (size_t i = 0; i < unique_cell_ids.size(); ++i) {
2851 if (unique_cell_ids[i] == renderer_id_) {
2852 ia2_attributes_.push_back(
2853 string16(L"table-cell-index:") + base::IntToString16(i));
2859 // The calculation of the accessible name of an element has been
2860 // standardized in the HTML to Platform Accessibility APIs Implementation
2861 // Guide (http://www.w3.org/TR/html-aapi/). In order to return the
2862 // appropriate accessible name on Windows, we need to apply some logic
2863 // to the fields we get from WebKit.
2865 // TODO(dmazzoni): move most of this logic into WebKit.
2869 // name: the default name, e.g. inner text
2870 // title ui element: a reference to a <label> element on the same
2871 // page that labels this node.
2872 // description: accessible labels that override the default name:
2873 // aria-label or aria-labelledby or aria-describedby
2874 // help: the value of the "title" attribute
2876 // On Windows, the logic we apply lets some fields take precedence and
2877 // always returns the primary name in "name" and the secondary name,
2878 // if any, in "description".
2880 int title_elem_id = GetIntAttribute(
2881 AccessibilityNodeData::ATTR_TITLE_UI_ELEMENT);
2882 std::string help = GetStringAttribute(AccessibilityNodeData::ATTR_HELP);
2883 std::string description = GetStringAttribute(
2884 AccessibilityNodeData::ATTR_DESCRIPTION);
2886 // WebKit annoyingly puts the title in the description if there's no other
2887 // description, which just confuses the rest of the logic. Put it back.
2888 // Now "help" is always the value of the "title" attribute, if present.
2889 std::string title_attr;
2890 if (GetHtmlAttribute("title", &title_attr) &&
2891 description == title_attr &&
2894 description.clear();
2897 // Now implement the main logic: the descripion should become the name if
2898 // it's nonempty, and the help should become the description if
2899 // there's no description - or the name if there's no name or description.
2900 if (!description.empty()) {
2901 name_ = description;
2902 description.clear();
2904 if (!help.empty() && description.empty()) {
2908 if (!description.empty() && name_.empty() && !title_elem_id) {
2909 name_ = description;
2910 description.clear();
2913 // If it's a text field, also consider the placeholder.
2914 std::string placeholder;
2915 if (role_ == WebKit::WebAXRoleTextField &&
2916 HasState(WebKit::WebAXStateFocusable) &&
2917 GetHtmlAttribute("placeholder", &placeholder)) {
2918 if (name_.empty() && !title_elem_id) {
2919 name_ = placeholder;
2920 } else if (description.empty()) {
2921 description = placeholder;
2925 SetStringAttribute(AccessibilityNodeData::ATTR_DESCRIPTION, description);
2926 SetStringAttribute(AccessibilityNodeData::ATTR_HELP, help);
2928 // On Windows, the value of a document should be its url.
2929 if (role_ == WebKit::WebAXRoleRootWebArea ||
2930 role_ == WebKit::WebAXRoleWebArea) {
2931 GetStringAttribute(AccessibilityNodeData::ATTR_DOC_URL, &value_);
2934 // For certain roles (listbox option, static text, and list marker)
2935 // WebKit stores the main accessible text in the "value" - swap it so
2936 // that it's the "name".
2937 if (name_.empty() &&
2938 (role_ == WebKit::WebAXRoleListBoxOption ||
2939 role_ == WebKit::WebAXRoleStaticText ||
2940 role_ == WebKit::WebAXRoleListMarker)) {
2944 // If this doesn't have a value and is linked then set its value to the url
2945 // attribute. This allows screen readers to read an empty link's destination.
2946 if (value_.empty() && (ia_state_ & STATE_SYSTEM_LINKED))
2947 GetStringAttribute(AccessibilityNodeData::ATTR_URL, &value_);
2949 // Clear any old relationships between this node and other nodes.
2950 for (size_t i = 0; i < relations_.size(); ++i)
2951 relations_[i]->Release();
2954 // Handle title UI element.
2955 if (title_elem_id) {
2956 // Add a labelled by relationship.
2957 CComObject<BrowserAccessibilityRelation>* relation;
2958 HRESULT hr = CComObject<BrowserAccessibilityRelation>::CreateInstance(
2960 DCHECK(SUCCEEDED(hr));
2962 relation->Initialize(this, IA2_RELATION_LABELLED_BY);
2963 relation->AddTarget(title_elem_id);
2964 relations_.push_back(relation);
2968 void BrowserAccessibilityWin::PostInitialize() {
2969 BrowserAccessibility::PostInitialize();
2971 // Construct the hypertext for this node.
2972 hyperlink_offset_to_index_.clear();
2973 hyperlinks_.clear();
2975 for (unsigned int i = 0; i < PlatformChildCount(); ++i) {
2976 BrowserAccessibility* child = PlatformGetChild(i);
2977 if (child->role() == WebKit::WebAXRoleStaticText) {
2978 hypertext_ += UTF8ToUTF16(child->name());
2980 hyperlink_offset_to_index_[hypertext_.size()] = hyperlinks_.size();
2981 hypertext_ += kEmbeddedCharacter;
2982 hyperlinks_.push_back(i);
2985 DCHECK_EQ(hyperlink_offset_to_index_.size(), hyperlinks_.size());
2987 // Fire an event when an alert first appears.
2988 if (role_ == WebKit::WebAXRoleAlert && first_time_)
2989 manager_->NotifyAccessibilityEvent(WebKit::WebAXEventAlert, this);
2991 // Fire events if text has changed.
2992 string16 text = TextForIAccessibleText();
2993 if (previous_text_ != text) {
2994 if (!previous_text_.empty() && !text.empty()) {
2995 manager_->NotifyAccessibilityEvent(
2996 WebKit::WebAXEventShow, this);
2999 // TODO(dmazzoni): Look into HIDE events, too.
3001 old_text_ = previous_text_;
3002 previous_text_ = text;
3005 // Fire events if the state has changed.
3006 if (!first_time_ && ia_state_ != old_ia_state_) {
3007 BrowserAccessibilityManagerWin* manager =
3008 manager_->ToBrowserAccessibilityManagerWin();
3010 // Normally focus events are handled elsewhere, however
3011 // focus for managed descendants is platform-specific.
3012 // Fire a focus event if the focused descendant in a multi-select
3013 // list box changes.
3014 if (role_ == WebKit::WebAXRoleListBoxOption &&
3015 (ia_state_ & STATE_SYSTEM_FOCUSABLE) &&
3016 (ia_state_ & STATE_SYSTEM_SELECTABLE) &&
3017 (ia_state_ & STATE_SYSTEM_FOCUSED) &&
3018 !(old_ia_state_ & STATE_SYSTEM_FOCUSED)) {
3019 manager->MaybeCallNotifyWinEvent(EVENT_OBJECT_FOCUS, unique_id_win());
3022 if ((ia_state_ & STATE_SYSTEM_SELECTED) &&
3023 !(old_ia_state_ & STATE_SYSTEM_SELECTED)) {
3024 manager->MaybeCallNotifyWinEvent(EVENT_OBJECT_SELECTIONADD,
3026 } else if (!(ia_state_ & STATE_SYSTEM_SELECTED) &&
3027 (old_ia_state_ & STATE_SYSTEM_SELECTED)) {
3028 manager->MaybeCallNotifyWinEvent(EVENT_OBJECT_SELECTIONREMOVE,
3032 old_ia_state_ = ia_state_;
3035 first_time_ = false;
3038 void BrowserAccessibilityWin::NativeAddReference() {
3042 void BrowserAccessibilityWin::NativeReleaseReference() {
3046 bool BrowserAccessibilityWin::IsNative() const {
3050 void BrowserAccessibilityWin::SetLocation(const gfx::Rect& new_location) {
3051 BrowserAccessibility::SetLocation(new_location);
3052 manager_->ToBrowserAccessibilityManagerWin()->MaybeCallNotifyWinEvent(
3053 EVENT_OBJECT_LOCATIONCHANGE, unique_id_win());
3056 BrowserAccessibilityWin* BrowserAccessibilityWin::NewReference() {
3061 BrowserAccessibilityWin* BrowserAccessibilityWin::GetTargetFromChildID(
3062 const VARIANT& var_id) {
3063 if (var_id.vt != VT_I4)
3066 LONG child_id = var_id.lVal;
3067 if (child_id == CHILDID_SELF)
3070 if (child_id >= 1 && child_id <= static_cast<LONG>(PlatformChildCount()))
3071 return PlatformGetChild(child_id - 1)->ToBrowserAccessibilityWin();
3073 return manager_->ToBrowserAccessibilityManagerWin()->
3074 GetFromUniqueIdWin(child_id);
3077 HRESULT BrowserAccessibilityWin::GetStringAttributeAsBstr(
3078 AccessibilityNodeData::StringAttribute attribute,
3082 if (!GetString16Attribute(attribute, &str))
3088 *value_bstr = SysAllocString(str.c_str());
3089 DCHECK(*value_bstr);
3094 void BrowserAccessibilityWin::StringAttributeToIA2(
3095 AccessibilityNodeData::StringAttribute attribute,
3096 const char* ia2_attr) {
3098 if (GetString16Attribute(attribute, &value))
3099 ia2_attributes_.push_back(ASCIIToUTF16(ia2_attr) + L":" + value);
3102 void BrowserAccessibilityWin::BoolAttributeToIA2(
3103 AccessibilityNodeData::BoolAttribute attribute,
3104 const char* ia2_attr) {
3106 if (GetBoolAttribute(attribute, &value)) {
3107 ia2_attributes_.push_back((ASCIIToUTF16(ia2_attr) + L":") +
3108 (value ? L"true" : L"false"));
3112 void BrowserAccessibilityWin::IntAttributeToIA2(
3113 AccessibilityNodeData::IntAttribute attribute,
3114 const char* ia2_attr) {
3116 if (GetIntAttribute(attribute, &value)) {
3117 ia2_attributes_.push_back(ASCIIToUTF16(ia2_attr) + L":" +
3118 base::IntToString16(value));
3122 string16 BrowserAccessibilityWin::GetValueText() {
3124 string16 value = UTF8ToUTF16(value_);
3125 if (value.empty() &&
3126 GetFloatAttribute(AccessibilityNodeData::ATTR_VALUE_FOR_RANGE, &fval)) {
3127 value = UTF8ToUTF16(base::DoubleToString(fval));
3132 string16 BrowserAccessibilityWin::TextForIAccessibleText() {
3133 if (IsEditableText())
3134 return UTF8ToUTF16(value_);
3135 return (role_ == WebKit::WebAXRoleStaticText) ?
3136 UTF8ToUTF16(name_) : hypertext_;
3139 void BrowserAccessibilityWin::HandleSpecialTextOffset(const string16& text,
3141 if (*offset == IA2_TEXT_OFFSET_LENGTH)
3142 *offset = static_cast<LONG>(text.size());
3143 else if (*offset == IA2_TEXT_OFFSET_CARET)
3144 get_caretOffset(offset);
3147 ui::TextBoundaryType BrowserAccessibilityWin::IA2TextBoundaryToTextBoundary(
3148 IA2TextBoundaryType ia2_boundary) {
3149 switch(ia2_boundary) {
3150 case IA2_TEXT_BOUNDARY_CHAR: return ui::CHAR_BOUNDARY;
3151 case IA2_TEXT_BOUNDARY_WORD: return ui::WORD_BOUNDARY;
3152 case IA2_TEXT_BOUNDARY_LINE: return ui::LINE_BOUNDARY;
3153 case IA2_TEXT_BOUNDARY_SENTENCE: return ui::SENTENCE_BOUNDARY;
3154 case IA2_TEXT_BOUNDARY_PARAGRAPH: return ui::PARAGRAPH_BOUNDARY;
3155 case IA2_TEXT_BOUNDARY_ALL: return ui::ALL_BOUNDARY;
3158 return ui::CHAR_BOUNDARY;
3162 LONG BrowserAccessibilityWin::FindBoundary(
3163 const string16& text,
3164 IA2TextBoundaryType ia2_boundary,
3166 ui::TextBoundaryDirection direction) {
3167 HandleSpecialTextOffset(text, &start_offset);
3168 ui::TextBoundaryType boundary = IA2TextBoundaryToTextBoundary(ia2_boundary);
3169 const std::vector<int32>& line_breaks = GetIntListAttribute(
3170 AccessibilityNodeData::ATTR_LINE_BREAKS);
3171 return ui::FindAccessibleTextBoundary(
3172 text, line_breaks, boundary, start_offset, direction);
3175 BrowserAccessibilityWin* BrowserAccessibilityWin::GetFromRendererID(
3176 int32 renderer_id) {
3177 return manager_->GetFromRendererID(renderer_id)->ToBrowserAccessibilityWin();
3180 void BrowserAccessibilityWin::InitRoleAndState() {
3182 ia2_state_ = IA2_STATE_OPAQUE;
3183 ia2_attributes_.clear();
3185 if (HasState(WebKit::WebAXStateBusy))
3186 ia_state_ |= STATE_SYSTEM_BUSY;
3187 if (HasState(WebKit::WebAXStateChecked))
3188 ia_state_ |= STATE_SYSTEM_CHECKED;
3189 if (HasState(WebKit::WebAXStateCollapsed))
3190 ia_state_ |= STATE_SYSTEM_COLLAPSED;
3191 if (HasState(WebKit::WebAXStateExpanded))
3192 ia_state_ |= STATE_SYSTEM_EXPANDED;
3193 if (HasState(WebKit::WebAXStateFocusable))
3194 ia_state_ |= STATE_SYSTEM_FOCUSABLE;
3195 if (HasState(WebKit::WebAXStateHaspopup))
3196 ia_state_ |= STATE_SYSTEM_HASPOPUP;
3197 if (HasState(WebKit::WebAXStateHovered))
3198 ia_state_ |= STATE_SYSTEM_HOTTRACKED;
3199 if (HasState(WebKit::WebAXStateIndeterminate))
3200 ia_state_ |= STATE_SYSTEM_INDETERMINATE;
3201 if (HasState(WebKit::WebAXStateInvisible))
3202 ia_state_ |= STATE_SYSTEM_INVISIBLE;
3203 if (HasState(WebKit::WebAXStateLinked))
3204 ia_state_ |= STATE_SYSTEM_LINKED;
3205 if (HasState(WebKit::WebAXStateMultiselectable)) {
3206 ia_state_ |= STATE_SYSTEM_EXTSELECTABLE;
3207 ia_state_ |= STATE_SYSTEM_MULTISELECTABLE;
3209 // TODO(ctguil): Support STATE_SYSTEM_EXTSELECTABLE/accSelect.
3210 if (HasState(WebKit::WebAXStateOffscreen))
3211 ia_state_ |= STATE_SYSTEM_OFFSCREEN;
3212 if (HasState(WebKit::WebAXStatePressed))
3213 ia_state_ |= STATE_SYSTEM_PRESSED;
3214 if (HasState(WebKit::WebAXStateProtected))
3215 ia_state_ |= STATE_SYSTEM_PROTECTED;
3216 if (HasState(WebKit::WebAXStateRequired))
3217 ia2_state_ |= IA2_STATE_REQUIRED;
3218 if (HasState(WebKit::WebAXStateSelectable))
3219 ia_state_ |= STATE_SYSTEM_SELECTABLE;
3220 if (HasState(WebKit::WebAXStateSelected))
3221 ia_state_ |= STATE_SYSTEM_SELECTED;
3222 if (HasState(WebKit::WebAXStateVisited))
3223 ia_state_ |= STATE_SYSTEM_TRAVERSED;
3224 if (!HasState(WebKit::WebAXStateEnabled))
3225 ia_state_ |= STATE_SYSTEM_UNAVAILABLE;
3226 if (HasState(WebKit::WebAXStateVertical)) {
3227 ia2_state_ |= IA2_STATE_VERTICAL;
3229 ia2_state_ |= IA2_STATE_HORIZONTAL;
3231 if (HasState(WebKit::WebAXStateVisited))
3232 ia_state_ |= STATE_SYSTEM_TRAVERSED;
3234 // WebKit marks everything as readonly unless it's editable text, so if it's
3235 // not readonly, mark it as editable now. The final computation of the
3236 // READONLY state for MSAA is below, after the switch.
3237 if (!HasState(WebKit::WebAXStateReadonly))
3238 ia2_state_ |= IA2_STATE_EDITABLE;
3241 if (GetHtmlAttribute("aria-invalid", &invalid))
3242 ia2_state_ |= IA2_STATE_INVALID_ENTRY;
3244 if (GetBoolAttribute(AccessibilityNodeData::ATTR_BUTTON_MIXED))
3245 ia_state_ |= STATE_SYSTEM_MIXED;
3247 if (GetBoolAttribute(AccessibilityNodeData::ATTR_CAN_SET_VALUE))
3248 ia2_state_ |= IA2_STATE_EDITABLE;
3250 string16 html_tag = GetString16Attribute(
3251 AccessibilityNodeData::ATTR_HTML_TAG);
3255 case WebKit::WebAXRoleAlert:
3256 ia_role_ = ROLE_SYSTEM_ALERT;
3258 case WebKit::WebAXRoleAlertDialog:
3259 ia_role_ = ROLE_SYSTEM_DIALOG;
3261 case WebKit::WebAXRoleApplication:
3262 ia_role_ = ROLE_SYSTEM_APPLICATION;
3264 case WebKit::WebAXRoleArticle:
3265 ia_role_ = ROLE_SYSTEM_GROUPING;
3266 ia2_role_ = IA2_ROLE_SECTION;
3267 ia_state_ |= STATE_SYSTEM_READONLY;
3269 case WebKit::WebAXRoleBusyIndicator:
3270 ia_role_ = ROLE_SYSTEM_ANIMATION;
3271 ia_state_ |= STATE_SYSTEM_READONLY;
3273 case WebKit::WebAXRoleButton:
3274 ia_role_ = ROLE_SYSTEM_PUSHBUTTON;
3275 bool is_aria_pressed_defined;
3277 if (GetAriaTristate("aria-pressed", &is_aria_pressed_defined, &is_mixed))
3278 ia_state_ |= STATE_SYSTEM_PRESSED;
3279 if (is_aria_pressed_defined)
3280 ia2_role_ = IA2_ROLE_TOGGLE_BUTTON;
3282 ia_state_ |= STATE_SYSTEM_MIXED;
3284 case WebKit::WebAXRoleCanvas:
3285 if (GetBoolAttribute(AccessibilityNodeData::ATTR_CANVAS_HAS_FALLBACK)) {
3286 role_name_ = L"canvas";
3287 ia2_role_ = IA2_ROLE_CANVAS;
3289 ia_role_ = ROLE_SYSTEM_GRAPHIC;
3292 case WebKit::WebAXRoleCell:
3293 ia_role_ = ROLE_SYSTEM_CELL;
3295 case WebKit::WebAXRoleCheckBox:
3296 ia_role_ = ROLE_SYSTEM_CHECKBUTTON;
3298 case WebKit::WebAXRoleColorWell:
3299 ia_role_ = ROLE_SYSTEM_CLIENT;
3300 ia2_role_ = IA2_ROLE_COLOR_CHOOSER;
3302 case WebKit::WebAXRoleColumn:
3303 ia_role_ = ROLE_SYSTEM_COLUMN;
3304 ia_state_ |= STATE_SYSTEM_READONLY;
3306 case WebKit::WebAXRoleColumnHeader:
3307 ia_role_ = ROLE_SYSTEM_COLUMNHEADER;
3308 ia_state_ |= STATE_SYSTEM_READONLY;
3310 case WebKit::WebAXRoleComboBox:
3311 ia_role_ = ROLE_SYSTEM_COMBOBOX;
3313 case WebKit::WebAXRoleDiv:
3314 role_name_ = L"div";
3315 ia2_role_ = IA2_ROLE_SECTION;
3317 case WebKit::WebAXRoleDefinition:
3318 role_name_ = html_tag;
3319 ia2_role_ = IA2_ROLE_PARAGRAPH;
3320 ia_state_ |= STATE_SYSTEM_READONLY;
3322 case WebKit::WebAXRoleDescriptionListDetail:
3323 role_name_ = html_tag;
3324 ia2_role_ = IA2_ROLE_PARAGRAPH;
3325 ia_state_ |= STATE_SYSTEM_READONLY;
3327 case WebKit::WebAXRoleDescriptionListTerm:
3328 ia_role_ = ROLE_SYSTEM_LISTITEM;
3329 ia_state_ |= STATE_SYSTEM_READONLY;
3331 case WebKit::WebAXRoleDialog:
3332 ia_role_ = ROLE_SYSTEM_DIALOG;
3333 ia_state_ |= STATE_SYSTEM_READONLY;
3335 case WebKit::WebAXRoleDisclosureTriangle:
3336 ia_role_ = ROLE_SYSTEM_OUTLINEBUTTON;
3337 ia_state_ |= STATE_SYSTEM_READONLY;
3339 case WebKit::WebAXRoleDocument:
3340 case WebKit::WebAXRoleRootWebArea:
3341 case WebKit::WebAXRoleWebArea:
3342 ia_role_ = ROLE_SYSTEM_DOCUMENT;
3343 ia_state_ |= STATE_SYSTEM_READONLY;
3344 ia_state_ |= STATE_SYSTEM_FOCUSABLE;
3346 case WebKit::WebAXRoleEditableText:
3347 ia_role_ = ROLE_SYSTEM_TEXT;
3348 ia2_state_ |= IA2_STATE_SINGLE_LINE;
3349 ia2_state_ |= IA2_STATE_EDITABLE;
3351 case WebKit::WebAXRoleForm:
3352 role_name_ = L"form";
3353 ia2_role_ = IA2_ROLE_FORM;
3355 case WebKit::WebAXRoleFooter:
3356 ia_role_ = IA2_ROLE_FOOTER;
3357 ia_state_ |= STATE_SYSTEM_READONLY;
3359 case WebKit::WebAXRoleGrid:
3360 ia_role_ = ROLE_SYSTEM_TABLE;
3361 ia_state_ |= STATE_SYSTEM_READONLY;
3363 case WebKit::WebAXRoleGroup: {
3364 string16 aria_role = GetString16Attribute(
3365 AccessibilityNodeData::ATTR_ROLE);
3366 if (aria_role == L"group" || html_tag == L"fieldset") {
3367 ia_role_ = ROLE_SYSTEM_GROUPING;
3368 } else if (html_tag == L"li") {
3369 ia_role_ = ROLE_SYSTEM_LISTITEM;
3371 if (html_tag.empty())
3372 role_name_ = L"div";
3374 role_name_ = html_tag;
3375 ia2_role_ = IA2_ROLE_SECTION;
3377 ia_state_ |= STATE_SYSTEM_READONLY;
3380 case WebKit::WebAXRoleGrowArea:
3381 ia_role_ = ROLE_SYSTEM_GRIP;
3382 ia_state_ |= STATE_SYSTEM_READONLY;
3384 case WebKit::WebAXRoleHeading:
3385 role_name_ = html_tag;
3386 ia2_role_ = IA2_ROLE_HEADING;
3387 ia_state_ |= STATE_SYSTEM_READONLY;
3389 case WebKit::WebAXRoleHorizontalRule:
3390 ia_role_ = ROLE_SYSTEM_SEPARATOR;
3392 case WebKit::WebAXRoleImage:
3393 ia_role_ = ROLE_SYSTEM_GRAPHIC;
3394 ia_state_ |= STATE_SYSTEM_READONLY;
3396 case WebKit::WebAXRoleImageMap:
3397 role_name_ = html_tag;
3398 ia2_role_ = IA2_ROLE_IMAGE_MAP;
3399 ia_state_ |= STATE_SYSTEM_READONLY;
3401 case WebKit::WebAXRoleImageMapLink:
3402 ia_role_ = ROLE_SYSTEM_LINK;
3403 ia_state_ |= STATE_SYSTEM_LINKED;
3404 ia_state_ |= STATE_SYSTEM_READONLY;
3406 case WebKit::WebAXRoleLabel:
3407 ia_role_ = ROLE_SYSTEM_TEXT;
3408 ia2_role_ = IA2_ROLE_LABEL;
3410 case WebKit::WebAXRoleBanner:
3411 case WebKit::WebAXRoleComplementary:
3412 case WebKit::WebAXRoleContentInfo:
3413 case WebKit::WebAXRoleMain:
3414 case WebKit::WebAXRoleNavigation:
3415 case WebKit::WebAXRoleSearch:
3416 ia_role_ = ROLE_SYSTEM_GROUPING;
3417 ia2_role_ = IA2_ROLE_SECTION;
3418 ia_state_ |= STATE_SYSTEM_READONLY;
3420 case WebKit::WebAXRoleLink:
3421 ia_role_ = ROLE_SYSTEM_LINK;
3422 ia_state_ |= STATE_SYSTEM_LINKED;
3424 case WebKit::WebAXRoleList:
3425 ia_role_ = ROLE_SYSTEM_LIST;
3426 ia_state_ |= STATE_SYSTEM_READONLY;
3428 case WebKit::WebAXRoleListBox:
3429 ia_role_ = ROLE_SYSTEM_LIST;
3431 case WebKit::WebAXRoleListBoxOption:
3432 ia_role_ = ROLE_SYSTEM_LISTITEM;
3433 if (ia_state_ & STATE_SYSTEM_SELECTABLE) {
3434 ia_state_ |= STATE_SYSTEM_FOCUSABLE;
3435 if (HasState(WebKit::WebAXStateFocused))
3436 ia_state_ |= STATE_SYSTEM_FOCUSED;
3439 case WebKit::WebAXRoleListItem:
3440 ia_role_ = ROLE_SYSTEM_LISTITEM;
3441 ia_state_ |= STATE_SYSTEM_READONLY;
3443 case WebKit::WebAXRoleListMarker:
3444 ia_role_ = ROLE_SYSTEM_TEXT;
3445 ia_state_ |= STATE_SYSTEM_READONLY;
3447 case WebKit::WebAXRoleMath:
3448 ia_role_ = ROLE_SYSTEM_EQUATION;
3449 ia_state_ |= STATE_SYSTEM_READONLY;
3451 case WebKit::WebAXRoleMenu:
3452 case WebKit::WebAXRoleMenuButton:
3453 ia_role_ = ROLE_SYSTEM_MENUPOPUP;
3455 case WebKit::WebAXRoleMenuBar:
3456 ia_role_ = ROLE_SYSTEM_MENUBAR;
3458 case WebKit::WebAXRoleMenuItem:
3459 ia_role_ = ROLE_SYSTEM_MENUITEM;
3461 case WebKit::WebAXRoleMenuListPopup:
3462 ia_role_ = ROLE_SYSTEM_CLIENT;
3464 case WebKit::WebAXRoleMenuListOption:
3465 ia_role_ = ROLE_SYSTEM_LISTITEM;
3466 if (ia_state_ & STATE_SYSTEM_SELECTABLE) {
3467 ia_state_ |= STATE_SYSTEM_FOCUSABLE;
3468 if (HasState(WebKit::WebAXStateFocused))
3469 ia_state_ |= STATE_SYSTEM_FOCUSED;
3472 case WebKit::WebAXRoleNote:
3473 ia_role_ = ROLE_SYSTEM_GROUPING;
3474 ia2_role_ = IA2_ROLE_NOTE;
3475 ia_state_ |= STATE_SYSTEM_READONLY;
3477 case WebKit::WebAXRoleOutline:
3478 ia_role_ = ROLE_SYSTEM_OUTLINE;
3479 ia_state_ |= STATE_SYSTEM_READONLY;
3481 case WebKit::WebAXRoleParagraph:
3483 ia2_role_ = IA2_ROLE_PARAGRAPH;
3485 case WebKit::WebAXRolePopUpButton:
3486 if (html_tag == L"select") {
3487 ia_role_ = ROLE_SYSTEM_COMBOBOX;
3489 ia_role_ = ROLE_SYSTEM_BUTTONMENU;
3492 case WebKit::WebAXRoleProgressIndicator:
3493 ia_role_ = ROLE_SYSTEM_PROGRESSBAR;
3494 ia_state_ |= STATE_SYSTEM_READONLY;
3496 case WebKit::WebAXRoleRadioButton:
3497 ia_role_ = ROLE_SYSTEM_RADIOBUTTON;
3499 case WebKit::WebAXRoleRadioGroup:
3500 ia_role_ = ROLE_SYSTEM_GROUPING;
3501 ia2_role_ = IA2_ROLE_SECTION;
3503 case WebKit::WebAXRoleRegion:
3504 ia_role_ = ROLE_SYSTEM_GROUPING;
3505 ia2_role_ = IA2_ROLE_SECTION;
3506 ia_state_ |= STATE_SYSTEM_READONLY;
3508 case WebKit::WebAXRoleRow:
3509 ia_role_ = ROLE_SYSTEM_ROW;
3510 ia_state_ |= STATE_SYSTEM_READONLY;
3512 case WebKit::WebAXRoleRowHeader:
3513 ia_role_ = ROLE_SYSTEM_ROWHEADER;
3514 ia_state_ |= STATE_SYSTEM_READONLY;
3516 case WebKit::WebAXRoleRuler:
3517 ia_role_ = ROLE_SYSTEM_CLIENT;
3518 ia2_role_ = IA2_ROLE_RULER;
3519 ia_state_ |= STATE_SYSTEM_READONLY;
3521 case WebKit::WebAXRoleScrollArea:
3522 ia_role_ = ROLE_SYSTEM_CLIENT;
3523 ia2_role_ = IA2_ROLE_SCROLL_PANE;
3524 ia_state_ |= STATE_SYSTEM_READONLY;
3526 case WebKit::WebAXRoleScrollBar:
3527 ia_role_ = ROLE_SYSTEM_SCROLLBAR;
3529 case WebKit::WebAXRoleSlider:
3530 ia_role_ = ROLE_SYSTEM_SLIDER;
3532 case WebKit::WebAXRoleSpinButton:
3533 ia_role_ = ROLE_SYSTEM_SPINBUTTON;
3535 case WebKit::WebAXRoleSpinButtonPart:
3536 ia_role_ = ROLE_SYSTEM_PUSHBUTTON;
3538 case WebKit::WebAXRoleSplitGroup:
3539 ia_role_ = ROLE_SYSTEM_CLIENT;
3540 ia2_role_ = IA2_ROLE_SPLIT_PANE;
3541 ia_state_ |= STATE_SYSTEM_READONLY;
3543 case WebKit::WebAXRoleAnnotation:
3544 case WebKit::WebAXRoleStaticText:
3545 ia_role_ = ROLE_SYSTEM_TEXT;
3546 ia_state_ |= STATE_SYSTEM_READONLY;
3548 case WebKit::WebAXRoleStatus:
3549 ia_role_ = ROLE_SYSTEM_STATUSBAR;
3550 ia_state_ |= STATE_SYSTEM_READONLY;
3552 case WebKit::WebAXRoleSplitter:
3553 ia_role_ = ROLE_SYSTEM_SEPARATOR;
3555 case WebKit::WebAXRoleSVGRoot:
3556 ia_role_ = ROLE_SYSTEM_GRAPHIC;
3558 case WebKit::WebAXRoleTab:
3559 ia_role_ = ROLE_SYSTEM_PAGETAB;
3561 case WebKit::WebAXRoleTable: {
3562 string16 aria_role = GetString16Attribute(
3563 AccessibilityNodeData::ATTR_ROLE);
3564 if (aria_role == L"treegrid") {
3565 ia_role_ = ROLE_SYSTEM_OUTLINE;
3567 ia_role_ = ROLE_SYSTEM_TABLE;
3568 ia_state_ |= STATE_SYSTEM_READONLY;
3572 case WebKit::WebAXRoleTableHeaderContainer:
3573 ia_role_ = ROLE_SYSTEM_GROUPING;
3574 ia2_role_ = IA2_ROLE_SECTION;
3575 ia_state_ |= STATE_SYSTEM_READONLY;
3577 case WebKit::WebAXRoleTabList:
3578 ia_role_ = ROLE_SYSTEM_PAGETABLIST;
3580 case WebKit::WebAXRoleTabPanel:
3581 ia_role_ = ROLE_SYSTEM_PROPERTYPAGE;
3583 case WebKit::WebAXRoleToggleButton:
3584 ia_role_ = ROLE_SYSTEM_PUSHBUTTON;
3585 ia2_role_ = IA2_ROLE_TOGGLE_BUTTON;
3587 case WebKit::WebAXRoleTextArea:
3588 ia_role_ = ROLE_SYSTEM_TEXT;
3589 ia2_state_ |= IA2_STATE_MULTI_LINE;
3590 ia2_state_ |= IA2_STATE_EDITABLE;
3591 ia2_state_ |= IA2_STATE_SELECTABLE_TEXT;
3593 case WebKit::WebAXRoleTextField:
3594 ia_role_ = ROLE_SYSTEM_TEXT;
3595 ia2_state_ |= IA2_STATE_SINGLE_LINE;
3596 ia2_state_ |= IA2_STATE_EDITABLE;
3597 ia2_state_ |= IA2_STATE_SELECTABLE_TEXT;
3599 case WebKit::WebAXRoleTimer:
3600 ia_role_ = ROLE_SYSTEM_CLOCK;
3601 ia_state_ |= STATE_SYSTEM_READONLY;
3603 case WebKit::WebAXRoleToolbar:
3604 ia_role_ = ROLE_SYSTEM_TOOLBAR;
3605 ia_state_ |= STATE_SYSTEM_READONLY;
3607 case WebKit::WebAXRoleUserInterfaceTooltip:
3608 ia_role_ = ROLE_SYSTEM_TOOLTIP;
3609 ia_state_ |= STATE_SYSTEM_READONLY;
3611 case WebKit::WebAXRoleTree:
3612 ia_role_ = ROLE_SYSTEM_OUTLINE;
3613 ia_state_ |= STATE_SYSTEM_READONLY;
3615 case WebKit::WebAXRoleTreeGrid:
3616 ia_role_ = ROLE_SYSTEM_OUTLINE;
3617 ia_state_ |= STATE_SYSTEM_READONLY;
3619 case WebKit::WebAXRoleTreeItem:
3620 ia_role_ = ROLE_SYSTEM_OUTLINEITEM;
3621 ia_state_ |= STATE_SYSTEM_READONLY;
3623 case WebKit::WebAXRoleWindow:
3624 ia_role_ = ROLE_SYSTEM_WINDOW;
3627 // TODO(dmazzoni): figure out the proper MSAA role for all of these.
3628 case WebKit::WebAXRoleBrowser:
3629 case WebKit::WebAXRoleDirectory:
3630 case WebKit::WebAXRoleDrawer:
3631 case WebKit::WebAXRoleHelpTag:
3632 case WebKit::WebAXRoleIgnored:
3633 case WebKit::WebAXRoleIncrementor:
3634 case WebKit::WebAXRoleLog:
3635 case WebKit::WebAXRoleMarquee:
3636 case WebKit::WebAXRoleMatte:
3637 case WebKit::WebAXRolePresentational:
3638 case WebKit::WebAXRoleRulerMarker:
3639 case WebKit::WebAXRoleSheet:
3640 case WebKit::WebAXRoleSliderThumb:
3641 case WebKit::WebAXRoleSystemWide:
3642 case WebKit::WebAXRoleValueIndicator:
3644 ia_role_ = ROLE_SYSTEM_CLIENT;
3648 // Compute the final value of READONLY for MSAA.
3650 // We always set the READONLY state for elements that have the
3651 // aria-readonly attribute and for a few roles (in the switch above).
3652 // We clear the READONLY state on focusable controls and on a document.
3653 // Everything else, the majority of objects, do not have this state set.
3654 if (HasState(WebKit::WebAXStateFocusable) &&
3655 ia_role_ != ROLE_SYSTEM_DOCUMENT) {
3656 ia_state_ &= ~(STATE_SYSTEM_READONLY);
3658 if (!HasState(WebKit::WebAXStateReadonly))
3659 ia_state_ &= ~(STATE_SYSTEM_READONLY);
3660 if (GetBoolAttribute(AccessibilityNodeData::ATTR_ARIA_READONLY))
3661 ia_state_ |= STATE_SYSTEM_READONLY;
3663 // The role should always be set.
3664 DCHECK(!role_name_.empty() || ia_role_);
3666 // If we didn't explicitly set the IAccessible2 role, make it the same
3667 // as the MSAA role.
3669 ia2_role_ = ia_role_;
3672 } // namespace content