| // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "views/accessibility/view_accessibility.h" |
| |
| #include "views/accessibility/view_accessibility_wrapper.h" |
| #include "views/widget/widget.h" |
| #include "views/widget/widget_win.h" |
| |
| const wchar_t kViewsUninitializeAccessibilityInstance[] = |
| L"Views_Uninitialize_AccessibilityInstance"; |
| |
| const wchar_t kViewsNativeHostPropForAccessibility[] = |
| L"Views_NativeViewHostHWNDForAccessibility"; |
| |
| |
| HRESULT ViewAccessibility::Initialize(views::View* view) { |
| if (!view) { |
| return E_INVALIDARG; |
| } |
| |
| view_ = view; |
| return S_OK; |
| } |
| |
| // TODO(ctguil): Handle case where child View is not contained by parent. |
| STDMETHODIMP ViewAccessibility::accHitTest( |
| LONG x_left, LONG y_top, VARIANT* child) { |
| if (!child) { |
| return E_INVALIDARG; |
| } |
| |
| if (!view_) |
| return E_FAIL; |
| |
| gfx::Point pt(x_left, y_top); |
| views::View::ConvertPointToView(NULL, view_, &pt); |
| |
| if (!view_->HitTest(pt)) { |
| // If containing parent is not hit, return with failure. |
| child->vt = VT_EMPTY; |
| return S_FALSE; |
| } |
| |
| int child_count = view_->GetChildViewCount(); |
| bool child_hit = false; |
| views::View* child_view = NULL; |
| for (int child_id = 0; child_id < child_count; ++child_id) { |
| // Search for hit within any of the children. |
| child_view = view_->GetChildViewAt(child_id); |
| views::View::ConvertPointToView(view_, child_view, &pt); |
| if (child_view->HitTest(pt)) { |
| // Store child_id (adjusted with +1 to convert to MSAA indexing). |
| child->lVal = child_id + 1; |
| child_hit = true; |
| break; |
| } |
| // Convert point back to parent view to test next child. |
| views::View::ConvertPointToView(child_view, view_, &pt); |
| } |
| |
| child->vt = VT_I4; |
| |
| if (!child_hit) { |
| // No child hit, return parent id. |
| child->lVal = CHILDID_SELF; |
| } else { |
| if (child_view == NULL) { |
| return E_FAIL; |
| } else if (child_view->GetChildViewCount() != 0) { |
| // Retrieve IDispatch for child, if it is not a leaf. |
| child->vt = VT_DISPATCH; |
| if ((GetViewAccessibilityWrapper(child_view))-> |
| GetInstance(IID_IAccessible, |
| reinterpret_cast<void**>(&child->pdispVal)) == S_OK) { |
| // Increment the reference count for the retrieved interface. |
| child->pdispVal->AddRef(); |
| return S_OK; |
| } else { |
| return E_NOINTERFACE; |
| } |
| } |
| } |
| |
| return S_OK; |
| } |
| |
| STDMETHODIMP ViewAccessibility::accLocation( |
| LONG* x_left, LONG* y_top, LONG* width, LONG* height, VARIANT var_id) { |
| if (!IsValidId(var_id) || !x_left || !y_top || !width || !height) { |
| return E_INVALIDARG; |
| } |
| |
| if (!view_) |
| return E_FAIL; |
| |
| gfx::Rect view_bounds; |
| // Retrieving the parent View to be used for converting from view-to-screen |
| // coordinates. |
| views::View* parent = view_->GetParent(); |
| |
| if (parent == NULL) { |
| // If no parent, remain within the same View. |
| parent = view_; |
| } |
| |
| // Retrieve active View's bounds. |
| view_bounds = view_->bounds(); |
| |
| if (!view_bounds.IsEmpty()) { |
| *width = view_bounds.width(); |
| *height = view_bounds.height(); |
| |
| gfx::Point topleft(view_bounds.origin()); |
| views::View::ConvertPointToScreen(parent, &topleft); |
| *x_left = topleft.x(); |
| *y_top = topleft.y(); |
| } else { |
| return E_FAIL; |
| } |
| return S_OK; |
| } |
| |
| STDMETHODIMP ViewAccessibility::accNavigate(LONG nav_dir, VARIANT start, |
| VARIANT* end) { |
| if (start.vt != VT_I4 || !end) { |
| return E_INVALIDARG; |
| } |
| |
| if (!view_) |
| return E_FAIL; |
| |
| switch (nav_dir) { |
| case NAVDIR_FIRSTCHILD: |
| case NAVDIR_LASTCHILD: { |
| if (start.lVal != CHILDID_SELF) { |
| // Start of navigation must be on the View itself. |
| return E_INVALIDARG; |
| } else if (view_->GetChildViewCount() == 0) { |
| // No children found. |
| return S_FALSE; |
| } |
| |
| // Set child_id based on first or last child. |
| int child_id = 0; |
| if (nav_dir == NAVDIR_LASTCHILD) { |
| child_id = view_->GetChildViewCount() - 1; |
| } |
| |
| views::View* child = view_->GetChildViewAt(child_id); |
| |
| if (child->GetChildViewCount() != 0) { |
| end->vt = VT_DISPATCH; |
| if ((GetViewAccessibilityWrapper(child))-> |
| GetInstance(IID_IAccessible, |
| reinterpret_cast<void**>(&end->pdispVal)) == S_OK) { |
| // Increment the reference count for the retrieved interface. |
| end->pdispVal->AddRef(); |
| return S_OK; |
| } else { |
| return E_NOINTERFACE; |
| } |
| } else { |
| end->vt = VT_I4; |
| // Set return child lVal, adjusted for MSAA indexing. (MSAA |
| // child indexing starts with 1, whereas View indexing starts with 0). |
| end->lVal = child_id + 1; |
| } |
| break; |
| } |
| case NAVDIR_LEFT: |
| case NAVDIR_UP: |
| case NAVDIR_PREVIOUS: |
| case NAVDIR_RIGHT: |
| case NAVDIR_DOWN: |
| case NAVDIR_NEXT: { |
| // Retrieve parent to access view index and perform bounds checking. |
| views::View* parent = view_->GetParent(); |
| if (!parent) { |
| return E_FAIL; |
| } |
| |
| if (start.lVal == CHILDID_SELF) { |
| int view_index = parent->GetChildIndex(view_); |
| // Check navigation bounds, adjusting for View child indexing (MSAA |
| // child indexing starts with 1, whereas View indexing starts with 0). |
| if (!IsValidNav(nav_dir, view_index, -1, |
| parent->GetChildViewCount() - 1)) { |
| // Navigation attempted to go out-of-bounds. |
| end->vt = VT_EMPTY; |
| return S_FALSE; |
| } else { |
| if (IsNavDirNext(nav_dir)) { |
| view_index += 1; |
| } else { |
| view_index -=1; |
| } |
| } |
| |
| views::View* child = parent->GetChildViewAt(view_index); |
| if (child->GetChildViewCount() != 0) { |
| end->vt = VT_DISPATCH; |
| // Retrieve IDispatch for non-leaf child. |
| if ((GetViewAccessibilityWrapper(child))-> |
| GetInstance(IID_IAccessible, |
| reinterpret_cast<void**>(&end->pdispVal)) == S_OK) { |
| // Increment the reference count for the retrieved interface. |
| end->pdispVal->AddRef(); |
| return S_OK; |
| } else { |
| return E_NOINTERFACE; |
| } |
| } else { |
| end->vt = VT_I4; |
| // Modifying view_index to give lVal correct MSAA-based value. (MSAA |
| // child indexing starts with 1, whereas View indexing starts with 0). |
| end->lVal = view_index + 1; |
| } |
| } else { |
| // Check navigation bounds, adjusting for MSAA child indexing (MSAA |
| // child indexing starts with 1, whereas View indexing starts with 0). |
| if (!IsValidNav(nav_dir, start.lVal, 0, |
| parent->GetChildViewCount() + 1)) { |
| // Navigation attempted to go out-of-bounds. |
| end->vt = VT_EMPTY; |
| return S_FALSE; |
| } else { |
| if (IsNavDirNext(nav_dir)) { |
| start.lVal += 1; |
| } else { |
| start.lVal -= 1; |
| } |
| } |
| |
| HRESULT result = this->get_accChild(start, &end->pdispVal); |
| if (result == S_FALSE) { |
| // Child is a leaf. |
| end->vt = VT_I4; |
| end->lVal = start.lVal; |
| } else if (result == E_INVALIDARG) { |
| return E_INVALIDARG; |
| } else { |
| // Child is not a leaf. |
| end->vt = VT_DISPATCH; |
| } |
| } |
| break; |
| } |
| default: |
| return E_INVALIDARG; |
| } |
| // Navigation performed correctly. Global return for this function, if no |
| // error triggered an escape earlier. |
| return S_OK; |
| } |
| |
| STDMETHODIMP ViewAccessibility::get_accChild(VARIANT var_child, |
| IDispatch** disp_child) { |
| if (var_child.vt != VT_I4 || !disp_child) |
| return E_INVALIDARG; |
| |
| if (!view_) |
| return E_FAIL; |
| |
| LONG child_id = V_I4(&var_child); |
| |
| if (child_id == CHILDID_SELF) { |
| // Remain with the same dispatch. |
| return S_OK; |
| } |
| |
| views::View* child_view = NULL; |
| if (child_id > 0) { |
| if (child_id <= view_->GetChildViewCount()) { |
| // Note: child_id is a one based index when indexing children. |
| child_view = view_->GetChildViewAt(child_id - 1); |
| } else { |
| // Attempt to retrieve a child view with the specified id. |
| child_view = view_->GetViewByID(child_id); |
| } |
| } else { |
| // Negative values are used for events fired using the view's WidgetWin |
| views::WidgetWin* widget = |
| static_cast<views::WidgetWin*>(view_->GetWidget()); |
| child_view = widget->GetAccessibilityViewEventAt(child_id); |
| } |
| |
| if (!child_view) { |
| // No child found. |
| *disp_child = NULL; |
| return E_FAIL; |
| } |
| |
| // First, check to see if the child is a native view. |
| if (child_view->GetClassName() == views::NativeViewHost::kViewClassName) { |
| views::NativeViewHost* native_host = |
| static_cast<views::NativeViewHost*>(child_view); |
| if (GetNativeIAccessibleInterface(native_host, disp_child) == S_OK) |
| return S_OK; |
| } |
| |
| // Next, see if the child view is a widget container. |
| if (child_view->child_widget()) { |
| views::WidgetWin* native_widget = |
| reinterpret_cast<views::WidgetWin*>(child_view->child_widget()); |
| if (GetNativeIAccessibleInterface( |
| native_widget->GetNativeView(), disp_child) == S_OK) { |
| return S_OK; |
| } |
| } |
| |
| // Finally, try our ViewAccessibility implementation. |
| // Retrieve the IUnknown interface for the requested child view, and |
| // assign the IDispatch returned. |
| HRESULT hr = GetViewAccessibilityWrapper(child_view)-> |
| GetInstance(IID_IAccessible, reinterpret_cast<void**>(disp_child)); |
| if (hr == S_OK) { |
| // Increment the reference count for the retrieved interface. |
| (*disp_child)->AddRef(); |
| return S_OK; |
| } else { |
| return E_NOINTERFACE; |
| } |
| } |
| |
| STDMETHODIMP ViewAccessibility::get_accChildCount(LONG* child_count) { |
| if (!child_count || !view_) { |
| return E_INVALIDARG; |
| } |
| |
| if (!view_) |
| return E_FAIL; |
| |
| *child_count = view_->GetChildViewCount(); |
| return S_OK; |
| } |
| |
| STDMETHODIMP ViewAccessibility::get_accDefaultAction( |
| VARIANT var_id, BSTR* def_action) { |
| if (!IsValidId(var_id) || !def_action) { |
| return E_INVALIDARG; |
| } |
| |
| if (!view_) |
| return E_FAIL; |
| |
| std::wstring temp_action = view_->GetAccessibleDefaultAction(); |
| |
| if (!temp_action.empty()) { |
| *def_action = SysAllocString(temp_action.c_str()); |
| } else { |
| return S_FALSE; |
| } |
| |
| return S_OK; |
| } |
| |
| STDMETHODIMP ViewAccessibility::get_accDescription(VARIANT var_id, BSTR* desc) { |
| if (!IsValidId(var_id) || !desc) { |
| return E_INVALIDARG; |
| } |
| |
| std::wstring temp_desc; |
| |
| view_->GetTooltipText(gfx::Point(), &temp_desc); |
| if (!temp_desc.empty()) { |
| *desc = SysAllocString(temp_desc.c_str()); |
| } else { |
| return S_FALSE; |
| } |
| |
| return S_OK; |
| } |
| |
| STDMETHODIMP ViewAccessibility::get_accFocus(VARIANT* focus_child) { |
| if (!focus_child) { |
| return E_INVALIDARG; |
| } |
| |
| if (!view_) |
| return E_FAIL; |
| |
| if (view_->GetChildViewCount() == 0 && view_->HasFocus()) { |
| // Parent view has focus. |
| focus_child->vt = VT_I4; |
| focus_child->lVal = CHILDID_SELF; |
| } else { |
| bool has_focus = false; |
| int child_count = view_->GetChildViewCount(); |
| // Search for child view with focus. |
| for (int child_id = 0; child_id < child_count; ++child_id) { |
| if (view_->GetChildViewAt(child_id)->HasFocus()) { |
| focus_child->vt = VT_I4; |
| focus_child->lVal = child_id + 1; |
| |
| // If child view is no leaf, retrieve IDispatch. |
| if (view_->GetChildViewAt(child_id)->GetChildViewCount() != 0) { |
| focus_child->vt = VT_DISPATCH; |
| this->get_accChild(*focus_child, &focus_child->pdispVal); |
| } |
| has_focus = true; |
| break; |
| } |
| } |
| // No current focus on any of the children. |
| if (!has_focus) { |
| focus_child->vt = VT_EMPTY; |
| return S_FALSE; |
| } |
| } |
| |
| return S_OK; |
| } |
| |
| STDMETHODIMP ViewAccessibility::get_accKeyboardShortcut( |
| VARIANT var_id, BSTR* acc_key) { |
| if (!IsValidId(var_id) || !acc_key) |
| return E_INVALIDARG; |
| |
| if (!view_) |
| return E_FAIL; |
| |
| std::wstring temp_key = view_->GetAccessibleKeyboardShortcut(); |
| |
| if (!temp_key.empty()) { |
| *acc_key = SysAllocString(temp_key.c_str()); |
| } else { |
| return S_FALSE; |
| } |
| |
| return S_OK; |
| } |
| |
| STDMETHODIMP ViewAccessibility::get_accName(VARIANT var_id, BSTR* name) { |
| if (!IsValidId(var_id) || !name) { |
| return E_INVALIDARG; |
| } |
| |
| if (!view_) |
| return E_FAIL; |
| |
| std::wstring temp_name; |
| |
| // Retrieve the current view's name. |
| view_->GetAccessibleName(&temp_name); |
| if (!temp_name.empty()) { |
| // Return name retrieved. |
| *name = SysAllocString(temp_name.c_str()); |
| } else { |
| // If view has no name, return S_FALSE. |
| return S_FALSE; |
| } |
| |
| return S_OK; |
| } |
| |
| STDMETHODIMP ViewAccessibility::get_accParent(IDispatch** disp_parent) { |
| if (!disp_parent) { |
| return E_INVALIDARG; |
| } |
| |
| if (!view_) |
| return E_FAIL; |
| |
| views::View* parent_view = view_->GetParent(); |
| |
| if (!parent_view) { |
| // This function can get called during teardown of WidetWin so we |
| // should bail out if we fail to get the HWND. |
| if (!view_->GetWidget() || !view_->GetWidget()->GetNativeView()) { |
| *disp_parent = NULL; |
| return S_FALSE; |
| } |
| |
| // For a View that has no parent (e.g. root), point the accessible parent to |
| // the default implementation, to interface with Windows' hierarchy and to |
| // support calls from e.g. WindowFromAccessibleObject. |
| HRESULT hr = |
| ::AccessibleObjectFromWindow(view_->GetWidget()->GetNativeView(), |
| OBJID_WINDOW, IID_IAccessible, |
| reinterpret_cast<void**>(disp_parent)); |
| |
| if (!SUCCEEDED(hr)) { |
| *disp_parent = NULL; |
| return S_FALSE; |
| } |
| |
| return S_OK; |
| } |
| |
| // Retrieve the IUnknown interface for the parent view, and assign the |
| // IDispatch returned. |
| if ((GetViewAccessibilityWrapper(parent_view))-> |
| GetInstance(IID_IAccessible, |
| reinterpret_cast<void**>(disp_parent)) == S_OK) { |
| // Increment the reference count for the retrieved interface. |
| (*disp_parent)->AddRef(); |
| return S_OK; |
| } else { |
| return E_NOINTERFACE; |
| } |
| } |
| |
| STDMETHODIMP ViewAccessibility::get_accRole(VARIANT var_id, VARIANT* role) { |
| if (!IsValidId(var_id) || !role) |
| return E_INVALIDARG; |
| |
| role->vt = VT_I4; |
| role->lVal = MSAARole(view_->GetAccessibleRole()); |
| return S_OK; |
| } |
| |
| STDMETHODIMP ViewAccessibility::get_accState(VARIANT var_id, VARIANT* state) { |
| if (!IsValidId(var_id) || !state) { |
| return E_INVALIDARG; |
| } |
| |
| state->vt = VT_I4; |
| |
| // Retrieve all currently applicable states of the parent. |
| this->SetState(state, view_); |
| |
| // Make sure that state is not empty, and has the proper type. |
| if (state->vt == VT_EMPTY) |
| return E_FAIL; |
| |
| return S_OK; |
| } |
| |
| STDMETHODIMP ViewAccessibility::get_accValue(VARIANT var_id, BSTR* value) { |
| if (!IsValidId(var_id) || !value) |
| return E_INVALIDARG; |
| |
| if (!view_) |
| return E_FAIL; |
| |
| // Retrieve the current view's value. |
| std::wstring temp_value = view_->GetAccessibleValue(); |
| |
| if (!temp_value.empty()) { |
| // Return value retrieved. |
| *value = SysAllocString(temp_value.c_str()); |
| } else { |
| // If view has no value, fall back into the default implementation. |
| *value = NULL; |
| return E_NOTIMPL; |
| } |
| |
| return S_OK; |
| } |
| |
| // Helper functions. |
| |
| bool ViewAccessibility::IsNavDirNext(int nav_dir) const { |
| if (nav_dir == NAVDIR_RIGHT || nav_dir == NAVDIR_DOWN || |
| nav_dir == NAVDIR_NEXT) { |
| return true; |
| } |
| return false; |
| } |
| |
| bool ViewAccessibility::IsValidNav(int nav_dir, int start_id, int lower_bound, |
| int upper_bound) const { |
| if (IsNavDirNext(nav_dir)) { |
| if ((start_id + 1) > upper_bound) { |
| return false; |
| } |
| } else { |
| if ((start_id - 1) <= lower_bound) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool ViewAccessibility::IsValidId(const VARIANT& child) const { |
| // View accessibility returns an IAccessible for each view so we only support |
| // the CHILDID_SELF id. |
| return (VT_I4 == child.vt) && (CHILDID_SELF == child.lVal); |
| } |
| |
| void ViewAccessibility::SetState(VARIANT* msaa_state, views::View* view) { |
| // Ensure the output param is initialized to zero. |
| msaa_state->lVal = 0; |
| |
| // Default state; all views can have accessibility focus. |
| msaa_state->lVal |= STATE_SYSTEM_FOCUSABLE; |
| |
| if (!view) |
| return; |
| |
| if (!view->IsEnabled()) { |
| msaa_state->lVal |= STATE_SYSTEM_UNAVAILABLE; |
| } |
| if (!view->IsVisible()) { |
| msaa_state->lVal |= STATE_SYSTEM_INVISIBLE; |
| } |
| if (view->IsHotTracked()) { |
| msaa_state->lVal |= STATE_SYSTEM_HOTTRACKED; |
| } |
| if (view->IsPushed()) { |
| msaa_state->lVal |= STATE_SYSTEM_PRESSED; |
| } |
| // Check both for actual View focus, as well as accessibility focus. |
| views::View* parent = view->GetParent(); |
| |
| if (view->HasFocus()) |
| msaa_state->lVal |= STATE_SYSTEM_FOCUSED; |
| |
| // Add on any view-specific states. |
| msaa_state->lVal |= MSAAState(view->GetAccessibleState()); |
| } |
| |
| // IAccessible functions not supported. |
| |
| HRESULT ViewAccessibility::accDoDefaultAction(VARIANT var_id) { |
| return E_NOTIMPL; |
| } |
| |
| STDMETHODIMP ViewAccessibility::get_accSelection(VARIANT* selected) { |
| if (selected) |
| selected->vt = VT_EMPTY; |
| return E_NOTIMPL; |
| } |
| |
| STDMETHODIMP ViewAccessibility::accSelect(LONG flagsSelect, VARIANT var_id) { |
| return E_NOTIMPL; |
| } |
| |
| STDMETHODIMP ViewAccessibility::get_accHelp(VARIANT var_id, BSTR* help) { |
| if (help) |
| *help = NULL; |
| return E_NOTIMPL; |
| } |
| |
| STDMETHODIMP ViewAccessibility::get_accHelpTopic( |
| BSTR* help_file, VARIANT var_id, LONG* topic_id) { |
| if (help_file) { |
| *help_file = NULL; |
| } |
| if (topic_id) { |
| *topic_id = static_cast<LONG>(-1); |
| } |
| return E_NOTIMPL; |
| } |
| |
| STDMETHODIMP ViewAccessibility::put_accName(VARIANT var_id, BSTR put_name) { |
| // Deprecated. |
| return E_NOTIMPL; |
| } |
| |
| STDMETHODIMP ViewAccessibility::put_accValue(VARIANT var_id, BSTR put_val) { |
| // TODO(ctguil): This use looks incorrect. var_id should be of type VT_I4. |
| if (V_VT(&var_id) == VT_BSTR) { |
| if (!lstrcmpi(var_id.bstrVal, kViewsUninitializeAccessibilityInstance)) { |
| view_ = NULL; |
| return S_OK; |
| } |
| } |
| // Deprecated. |
| return E_NOTIMPL; |
| } |
| |
| int32 ViewAccessibility::MSAAEvent(AccessibilityTypes::Event event) { |
| switch (event) { |
| case AccessibilityTypes::EVENT_ALERT: |
| return EVENT_SYSTEM_ALERT; |
| case AccessibilityTypes::EVENT_FOCUS: |
| return EVENT_OBJECT_FOCUS; |
| case AccessibilityTypes::EVENT_MENUSTART: |
| return EVENT_SYSTEM_MENUSTART; |
| case AccessibilityTypes::EVENT_MENUEND: |
| return EVENT_SYSTEM_MENUEND; |
| case AccessibilityTypes::EVENT_MENUPOPUPSTART: |
| return EVENT_SYSTEM_MENUPOPUPSTART; |
| case AccessibilityTypes::EVENT_MENUPOPUPEND: |
| return EVENT_SYSTEM_MENUPOPUPEND; |
| default: |
| // Not supported or invalid event. |
| NOTREACHED(); |
| return -1; |
| } |
| } |
| |
| int32 ViewAccessibility::MSAARole(AccessibilityTypes::Role role) { |
| switch (role) { |
| case AccessibilityTypes::ROLE_ALERT: |
| return ROLE_SYSTEM_ALERT; |
| case AccessibilityTypes::ROLE_APPLICATION: |
| return ROLE_SYSTEM_APPLICATION; |
| case AccessibilityTypes::ROLE_BUTTONDROPDOWN: |
| return ROLE_SYSTEM_BUTTONDROPDOWN; |
| case AccessibilityTypes::ROLE_BUTTONMENU: |
| return ROLE_SYSTEM_BUTTONMENU; |
| case AccessibilityTypes::ROLE_CHECKBUTTON: |
| return ROLE_SYSTEM_CHECKBUTTON; |
| case AccessibilityTypes::ROLE_COMBOBOX: |
| return ROLE_SYSTEM_COMBOBOX; |
| case AccessibilityTypes::ROLE_DIALOG: |
| return ROLE_SYSTEM_DIALOG; |
| case AccessibilityTypes::ROLE_GRAPHIC: |
| return ROLE_SYSTEM_GRAPHIC; |
| case AccessibilityTypes::ROLE_GROUPING: |
| return ROLE_SYSTEM_GROUPING; |
| case AccessibilityTypes::ROLE_LINK: |
| return ROLE_SYSTEM_LINK; |
| case AccessibilityTypes::ROLE_MENUBAR: |
| return ROLE_SYSTEM_MENUBAR; |
| case AccessibilityTypes::ROLE_MENUITEM: |
| return ROLE_SYSTEM_MENUITEM; |
| case AccessibilityTypes::ROLE_MENUPOPUP: |
| return ROLE_SYSTEM_MENUPOPUP; |
| case AccessibilityTypes::ROLE_OUTLINE: |
| return ROLE_SYSTEM_OUTLINE; |
| case AccessibilityTypes::ROLE_OUTLINEITEM: |
| return ROLE_SYSTEM_OUTLINEITEM; |
| case AccessibilityTypes::ROLE_PAGETAB: |
| return ROLE_SYSTEM_PAGETAB; |
| case AccessibilityTypes::ROLE_PAGETABLIST: |
| return ROLE_SYSTEM_PAGETABLIST; |
| case AccessibilityTypes::ROLE_PANE: |
| return ROLE_SYSTEM_PANE; |
| case AccessibilityTypes::ROLE_PROGRESSBAR: |
| return ROLE_SYSTEM_PROGRESSBAR; |
| case AccessibilityTypes::ROLE_PUSHBUTTON: |
| return ROLE_SYSTEM_PUSHBUTTON; |
| case AccessibilityTypes::ROLE_RADIOBUTTON: |
| return ROLE_SYSTEM_RADIOBUTTON; |
| case AccessibilityTypes::ROLE_SCROLLBAR: |
| return ROLE_SYSTEM_SCROLLBAR; |
| case AccessibilityTypes::ROLE_SEPARATOR: |
| return ROLE_SYSTEM_SEPARATOR; |
| case AccessibilityTypes::ROLE_STATICTEXT: |
| return ROLE_SYSTEM_STATICTEXT; |
| case AccessibilityTypes::ROLE_TEXT: |
| return ROLE_SYSTEM_TEXT; |
| case AccessibilityTypes::ROLE_TITLEBAR: |
| return ROLE_SYSTEM_TITLEBAR; |
| case AccessibilityTypes::ROLE_TOOLBAR: |
| return ROLE_SYSTEM_TOOLBAR; |
| case AccessibilityTypes::ROLE_WINDOW: |
| return ROLE_SYSTEM_WINDOW; |
| case AccessibilityTypes::ROLE_CLIENT: |
| default: |
| // This is the default role for MSAA. |
| return ROLE_SYSTEM_CLIENT; |
| } |
| } |
| |
| int32 ViewAccessibility::MSAAState(AccessibilityTypes::State state) { |
| int32 msaa_state = 0; |
| if (state & AccessibilityTypes::STATE_CHECKED) |
| msaa_state |= STATE_SYSTEM_CHECKED; |
| if (state & AccessibilityTypes::STATE_COLLAPSED) |
| msaa_state |= STATE_SYSTEM_COLLAPSED; |
| if (state & AccessibilityTypes::STATE_DEFAULT) |
| msaa_state |= STATE_SYSTEM_DEFAULT; |
| if (state & AccessibilityTypes::STATE_EXPANDED) |
| msaa_state |= STATE_SYSTEM_EXPANDED; |
| if (state & AccessibilityTypes::STATE_HASPOPUP) |
| msaa_state |= STATE_SYSTEM_HASPOPUP; |
| if (state & AccessibilityTypes::STATE_HOTTRACKED) |
| msaa_state |= STATE_SYSTEM_HOTTRACKED; |
| if (state & AccessibilityTypes::STATE_INVISIBLE) |
| msaa_state |= STATE_SYSTEM_INVISIBLE; |
| if (state & AccessibilityTypes::STATE_LINKED) |
| msaa_state |= STATE_SYSTEM_LINKED; |
| if (state & AccessibilityTypes::STATE_OFFSCREEN) |
| msaa_state |= STATE_SYSTEM_OFFSCREEN; |
| if (state & AccessibilityTypes::STATE_PRESSED) |
| msaa_state |= STATE_SYSTEM_PRESSED; |
| if (state & AccessibilityTypes::STATE_PROTECTED) |
| msaa_state |= STATE_SYSTEM_PROTECTED; |
| if (state & AccessibilityTypes::STATE_READONLY) |
| msaa_state |= STATE_SYSTEM_READONLY; |
| if (state & AccessibilityTypes::STATE_SELECTED) |
| msaa_state |= STATE_SYSTEM_SELECTED; |
| if (state & AccessibilityTypes::STATE_FOCUSED) |
| msaa_state |= STATE_SYSTEM_FOCUSED; |
| if (state & AccessibilityTypes::STATE_UNAVAILABLE) |
| msaa_state |= STATE_SYSTEM_UNAVAILABLE; |
| return msaa_state; |
| } |
| |
| HRESULT ViewAccessibility::GetNativeIAccessibleInterface( |
| views::NativeViewHost* native_host, IDispatch** disp_child) { |
| if (!native_host || !disp_child) { |
| return E_INVALIDARG; |
| } |
| |
| HWND native_view_window = |
| static_cast<HWND>(GetProp(native_host->native_view(), |
| kViewsNativeHostPropForAccessibility)); |
| if (!IsWindow(native_view_window)) { |
| native_view_window = native_host->native_view(); |
| } |
| |
| return GetNativeIAccessibleInterface(native_view_window, disp_child); |
| } |
| |
| HRESULT ViewAccessibility::GetNativeIAccessibleInterface( |
| HWND native_view_window , IDispatch** disp_child) { |
| if (IsWindow(native_view_window)) { |
| LRESULT ret = SendMessage(native_view_window, WM_GETOBJECT, 0, |
| OBJID_CLIENT); |
| return ObjectFromLresult(ret, IID_IDispatch, 0, |
| reinterpret_cast<void**>(disp_child)); |
| } |
| |
| return E_FAIL; |
| } |