Introduce WebAccessibilityControllerImpl....

webkit/glue/glue_accessibility_object.cc

Index: webkit/glue/glue_accessibility_object.cc
===================================================================
--- webkit/glue/glue_accessibility_object.cc	(revision 30964)
+++ webkit/glue/glue_accessibility_object.cc	(working copy)
@@ -1,482 +0,0 @@
-// Copyright (c) 2006-2009 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 "config.h"
-
-#include "AccessibilityObject.h"
-#include "EventHandler.h"
-#include "FrameView.h"
-#include "PlatformKeyboardEvent.h"
-
-#include "webkit/glue/glue_accessibility_object.h"
-
-using WebCore::AccessibilityObject;
-using WebCore::String;
-using webkit_glue::WebAccessibility;
-
-GlueAccessibilityObject::GlueAccessibilityObject(AccessibilityObject* obj)
-    : AccessibilityObjectWrapper(obj) {
-  m_object->setWrapper(this);
-}
-
-GlueAccessibilityObject* GlueAccessibilityObject::CreateInstance(
-    AccessibilityObject* obj) {
-  if (!obj)
-    return NULL;
-
-  return new GlueAccessibilityObject(obj);
-}
-
-bool GlueAccessibilityObject::DoDefaultAction(int child_id) {
-  AccessibilityObject* child_obj;
-
-  if (!GetAccessibilityObjectForChild(child_id, child_obj) ||
-      !child_obj->performDefaultAction()) {
-    return false;
-  }
-  return true;
-}
-
-GlueAccessibilityObject* GlueAccessibilityObject::HitTest(long x, long y) {
-  if (!m_object)
-    return NULL;
-
-  // x, y - coordinates are passed in as window coordinates, to maintain
-  // sandbox functionality.
-  WebCore::IntPoint point =
-    m_object->documentFrameView()->windowToContents(WebCore::IntPoint(x, y));
-  AccessibilityObject* child_obj = m_object->doAccessibilityHitTest(point);
-
-  if (!child_obj) {
-    // If we did not hit any child objects, test whether the point hit us, and
-    // report that.
-    if (!m_object->boundingBoxRect().contains(point))
-      return NULL;
-    child_obj = m_object;
-  }
-  // TODO(klink): simple object child?
-  ToWrapper(child_obj)->ref();
-  return ToWrapper(child_obj);
-}
-
-bool GlueAccessibilityObject::Location(long* left, long* top, long* width,
-                                       long* height, int child_id) {
-  if (!left || !top || !width || !height)
-    return false;
-
-  *left = *top = *width = *height = 0;
-
-  AccessibilityObject* child_obj;
-  if (!GetAccessibilityObjectForChild(child_id, child_obj))
-    return false;
-
-  // Returning window coordinates, to be handled and converted appropriately by
-  // the client.
-  WebCore::IntRect window_rect(child_obj->documentFrameView()->contentsToWindow(
-      child_obj->boundingBoxRect()));
-  *left = window_rect.x();
-  *top = window_rect.y();
-  *width = window_rect.width();
-  *height = window_rect.height();
-  return true;
-}
-
-GlueAccessibilityObject* GlueAccessibilityObject::Navigate(
-    WebAccessibility::Direction dir, int start_child_id) {
-  AccessibilityObject* child_obj = 0;
-
-  switch (dir) {
-    case WebAccessibility::DIRECTION_DOWN:
-    case WebAccessibility::DIRECTION_UP:
-    case WebAccessibility::DIRECTION_LEFT:
-    case WebAccessibility::DIRECTION_RIGHT:
-      // These directions are not implemented, matching Mozilla and IE.
-      return NULL;
-    case WebAccessibility::DIRECTION_LASTCHILD:
-    case WebAccessibility::DIRECTION_FIRSTCHILD:
-      // MSDN states that navigating to first/last child can only be from self.
-      if (start_child_id != 0 || !m_object)
-        return NULL;
-
-      if (dir == WebAccessibility::DIRECTION_FIRSTCHILD) {
-        child_obj = m_object->firstChild();
-      } else {
-        child_obj = m_object->lastChild();
-      }
-      break;
-    case WebAccessibility::DIRECTION_NEXT:
-    case WebAccessibility::DIRECTION_PREVIOUS: {
-      // Navigating to next and previous is allowed from self or any of our
-      // children.
-      if (!GetAccessibilityObjectForChild(start_child_id, child_obj))
-        return NULL;
-
-      if (dir == WebAccessibility::DIRECTION_NEXT) {
-        child_obj = child_obj->nextSibling();
-      } else {
-        child_obj = child_obj->previousSibling();
-      }
-      break;
-    }
-    default:
-      return NULL;
-  }
-
-  if (!child_obj)
-    return NULL;
-
-  // TODO(klink): simple object child?
-  ToWrapper(child_obj)->ref();
-  return ToWrapper(child_obj);
-}
-
-GlueAccessibilityObject* GlueAccessibilityObject::GetChild(int child_id) {
-  AccessibilityObject* child_obj;
-  if (!GetAccessibilityObjectForChild(child_id, child_obj))
-    return NULL;
-
-  // TODO(klink): simple object child?
-  ToWrapper(child_obj)->ref();
-  return ToWrapper(child_obj);
-}
-
-bool GlueAccessibilityObject::ChildCount(long* count) {
-  if (!m_object || !count)
-    return false;
-
-  *count = static_cast<long>(m_object->children().size());
-  return true;
-}
-
-bool GlueAccessibilityObject::DefaultAction(int child_id, String* action) {
-  if (!action)
-    return false;
-
-  AccessibilityObject* child_obj;
-  if (!GetAccessibilityObjectForChild(child_id, child_obj))
-    return false;
-
-  *action = child_obj->actionVerb();
-  return !action->isEmpty();
-}
-
-bool GlueAccessibilityObject::Description(int child_id, String* description) {
-  if (!description)
-    return false;
-
-  AccessibilityObject* child_obj;
-  if (!GetAccessibilityObjectForChild(child_id, child_obj))
-    return false;
-
-  // TODO(klink): Description, for SELECT subitems, should be a string
-  // describing the position of the item in its group and of the group in the
-  // list (see Firefox).
-  *description = ToWrapper(child_obj)->description();
-  return !description->isEmpty();
-}
-
-GlueAccessibilityObject* GlueAccessibilityObject::GetFocusedChild() {
-  if (!m_object)
-    return NULL;
-
-  AccessibilityObject* focused_obj = m_object->focusedUIElement();
-  if (!focused_obj)
-    return NULL;
-
-  // Only return the focused child if it's us or a child of us.
-  if (focused_obj == m_object || focused_obj->parentObject() == m_object) {
-    ToWrapper(focused_obj)->ref();
-    return ToWrapper(focused_obj);
-  }
-  return NULL;
-}
-
-bool GlueAccessibilityObject::HelpText(int child_id, String* help) {
-  if (!help)
-    return false;
-
-  AccessibilityObject* child_obj;
-  if (!GetAccessibilityObjectForChild(child_id, child_obj))
-    return false;
-
-  *help = child_obj->helpText();
-  return !help->isEmpty();
-}
-
-bool GlueAccessibilityObject::KeyboardShortcut(int child_id, String* shortcut) {
-  if (!shortcut)
-    return false;
-
-  AccessibilityObject* child_obj;
-  if (!GetAccessibilityObjectForChild(child_id, child_obj))
-    return false;
-
-  String access_key = child_obj->accessKey();
-  if (access_key.isNull())
-    return false;
-
-  static String access_key_modifiers;
-  if (access_key_modifiers.isNull()) {
-    unsigned modifiers = WebCore::EventHandler::accessKeyModifiers();
-    // Follow the same order as Mozilla MSAA implementation:
-    // Ctrl+Alt+Shift+Meta+key. MSDN states that keyboard shortcut strings
-    // should not be localized and defines the separator as "+".
-    if (modifiers & WebCore::PlatformKeyboardEvent::CtrlKey)
-        access_key_modifiers += "Ctrl+";
-    if (modifiers & WebCore::PlatformKeyboardEvent::AltKey)
-        access_key_modifiers += "Alt+";
-    if (modifiers & WebCore::PlatformKeyboardEvent::ShiftKey)
-        access_key_modifiers += "Shift+";
-    if (modifiers & WebCore::PlatformKeyboardEvent::MetaKey)
-        access_key_modifiers += "Win+";
-  }
-  *shortcut = access_key_modifiers + access_key;
-  return !shortcut->isEmpty();
-}
-
-bool GlueAccessibilityObject::Name(int child_id, String* name) {
-  if (!name)
-    return false;
-
-  AccessibilityObject* child_obj;
-  if (!GetAccessibilityObjectForChild(child_id, child_obj))
-    return false;
-
-  *name = ToWrapper(child_obj)->name();
-  return !name->isEmpty();
-}
-
-GlueAccessibilityObject* GlueAccessibilityObject::GetParent() {
-  if (!m_object)
-    return NULL;
-
-  AccessibilityObject* parent_obj = m_object->parentObject();
-
-  if (parent_obj) {
-    ToWrapper(parent_obj)->ref();
-    return ToWrapper(parent_obj);
-  }
-  // No valid parent, or parent is the containing window.
-  return NULL;
-}
-
-bool GlueAccessibilityObject::Role(int child_id, long* role) {
-  if (!role)
-    return false;
-
-  AccessibilityObject* child_obj;
-  if (!GetAccessibilityObjectForChild(child_id, child_obj))
-    return false;
-
-  *role = ToWrapper(child_obj)->role();
-  return true;
-}
-
-bool GlueAccessibilityObject::Value(int child_id, String* value) {
-  if (!value)
-    return false;
-
-  AccessibilityObject* child_obj;
-  if (!GetAccessibilityObjectForChild(child_id, child_obj))
-    return false;
-
-  *value = ToWrapper(child_obj)->value();
-  return !value->isEmpty();
-}
-
-bool GlueAccessibilityObject::State(int child_id, long* state) {
-  if (!state)
-    return false;
-
-  *state = 0;
-  AccessibilityObject* child_obj;
-  if (!GetAccessibilityObjectForChild(child_id, child_obj))
-    return false;
-
-  if (child_obj->isChecked())
-    *state |= static_cast<long>(1 << WebAccessibility::STATE_CHECKED);
-
-  if (child_obj->canSetFocusAttribute())
-    *state |= static_cast<long>(1 << WebAccessibility::STATE_FOCUSABLE);
-
-  if (child_obj->isFocused())
-    *state |= static_cast<long>(1 << WebAccessibility::STATE_FOCUSED);
-
-  if (child_obj->isHovered())
-    *state |= static_cast<long>(1 << WebAccessibility::STATE_HOTTRACKED);
-
-  if (child_obj->isIndeterminate())
-    *state |= static_cast<long>(1 << WebAccessibility::STATE_INDETERMINATE);
-
-  if (child_obj->isAnchor())
-    *state |= static_cast<long>(1 << WebAccessibility::STATE_LINKED);
-
-  if (child_obj->isMultiSelect())
-    *state |= static_cast<long>(1 << WebAccessibility::STATE_MULTISELECTABLE);
-
-  if (child_obj->isOffScreen())
-    *state |= static_cast<long>(1 << WebAccessibility::STATE_OFFSCREEN);
-
-  if (child_obj->isPressed())
-    *state |= static_cast<long>(1 << WebAccessibility::STATE_PRESSED);
-
-  if (child_obj->isPasswordField())
-    *state |= static_cast<long>(1 << WebAccessibility::STATE_PROTECTED);
-
-  if (child_obj->isReadOnly())
-    *state |= static_cast<long>(1 << WebAccessibility::STATE_READONLY);
-
-  if (child_obj->isVisited())
-    *state |= static_cast<long>(1 << WebAccessibility::STATE_TRAVERSED);
-
-  if (!child_obj->isEnabled())
-    *state |= static_cast<long>(1 << WebAccessibility::STATE_UNAVAILABLE);
-
-  // TODO(klink): Add selected and selectable states.
-
-  return true;
-}
-
-// Helper functions
-String GlueAccessibilityObject::name() const {
-  return m_object->title();
-}
-
-String GlueAccessibilityObject::value() const {
-  return m_object->stringValue();
-}
-
-String GlueAccessibilityObject::description() const {
-  String desc = m_object->accessibilityDescription();
-  if (desc.isNull())
-      return desc;
-
-  // From the Mozilla MSAA implementation:
-  // "Signal to screen readers that this description is speakable and is not
-  // a formatted positional information description. Don't localize the
-  // 'Description: ' part of this string, it will be parsed out by assistive
-  // technologies."
-  return "Description: " + desc;
-}
-
-// Provides a conversion between the WebCore::AccessibilityRole and a
-// role supported on the Browser side. Listed alphabetically by the
-// WebAccessibility role (except for default role). Static function.
-static WebAccessibility::Role SupportedRole(WebCore::AccessibilityRole role) {
-  switch (role) {
-    case WebCore::LandmarkApplicationRole:
-      return WebAccessibility::ROLE_APPLICATION;
-    case WebCore::CellRole:
-      return WebAccessibility::ROLE_CELL;
-    case WebCore::CheckBoxRole:
-      return WebAccessibility::ROLE_CHECKBUTTON;
-    case WebCore::ColumnRole:
-      return WebAccessibility::ROLE_COLUMN;
-    case WebCore::ColumnHeaderRole:
-      return WebAccessibility::ROLE_COLUMNHEADER;
-    case WebCore::DocumentArticleRole:
-    case WebCore::WebAreaRole:
-      return WebAccessibility::ROLE_DOCUMENT;
-    case WebCore::ImageMapRole:
-    case WebCore::ImageRole:
-      return WebAccessibility::ROLE_GRAPHIC;
-    case WebCore::DocumentRegionRole:
-    case WebCore::RadioGroupRole:
-    case WebCore::GroupRole:
-      return WebAccessibility::ROLE_GROUPING;
-    case WebCore::LinkRole:
-    case WebCore::WebCoreLinkRole:
-      return WebAccessibility::ROLE_LINK;
-    case WebCore::ListRole:
-      return WebAccessibility::ROLE_LIST;
-    case WebCore::ListBoxRole:
-      return WebAccessibility::ROLE_LISTBOX;
-    case WebCore::ListBoxOptionRole:
-      return WebAccessibility::ROLE_LISTITEM;
-    case WebCore::MenuBarRole:
-      return WebAccessibility::ROLE_MENUBAR;
-    case WebCore::MenuButtonRole:
-    case WebCore::MenuItemRole:
-      return WebAccessibility::ROLE_MENUITEM;
-    case WebCore::MenuRole:
-      return WebAccessibility::ROLE_MENUPOPUP;
-    case WebCore::OutlineRole:
-      return WebAccessibility::ROLE_OUTLINE;
-    case WebCore::TabGroupRole:
-      return WebAccessibility::ROLE_PAGETABLIST;
-    case WebCore::ProgressIndicatorRole:
-      return WebAccessibility::ROLE_PROGRESSBAR;
-    case WebCore::ButtonRole:
-      return WebAccessibility::ROLE_PUSHBUTTON;
-    case WebCore::RadioButtonRole:
-      return WebAccessibility::ROLE_RADIOBUTTON;
-    case WebCore::RowRole:
-      return WebAccessibility::ROLE_ROW;
-    case WebCore::RowHeaderRole:
-      return WebAccessibility::ROLE_ROWHEADER;
-    case WebCore::SplitterRole:
-      return WebAccessibility::ROLE_SEPARATOR;
-    case WebCore::SliderRole:
-      return WebAccessibility::ROLE_SLIDER;
-    case WebCore::StaticTextRole:
-      return WebAccessibility::ROLE_STATICTEXT;
-    case WebCore::ApplicationStatusRole:
-      return WebAccessibility::ROLE_STATUSBAR;
-    case WebCore::TableRole:
-      return WebAccessibility::ROLE_TABLE;
-    case WebCore::ListMarkerRole:
-    case WebCore::TextFieldRole:
-    case WebCore::TextAreaRole:
-      return WebAccessibility::ROLE_TEXT;
-    case WebCore::ToolbarRole:
-      return WebAccessibility::ROLE_TOOLBAR;
-    case WebCore::UserInterfaceTooltipRole:
-      return WebAccessibility::ROLE_TOOLTIP;
-    case WebCore::DocumentRole:
-    case WebCore::UnknownRole:
-    default:
-        // This is the default role.
-      return WebAccessibility::ROLE_CLIENT;
-  }
-}
-
-WebAccessibility::Role GlueAccessibilityObject::role() const {
-  return SupportedRole(m_object->roleValue());
-}
-
-bool GlueAccessibilityObject::GetAccessibilityObjectForChild(int child_id,
-    AccessibilityObject*& child_obj) const {
-  child_obj = 0;
-
-  if (!m_object || child_id < 0)
-    return false;
-
-  if (child_id == 0) {
-    child_obj = m_object;
-  } else {
-    size_t child_index = static_cast<size_t>(child_id - 1);
-
-    if (child_index >= m_object->children().size())
-      return false;
-    child_obj = m_object->children().at(child_index).get();
-  }
-
-  if (!child_obj)
-    return false;
-
-  return true;
-}
-
-GlueAccessibilityObject* GlueAccessibilityObject::ToWrapper(
-    AccessibilityObject* obj) {
-  if (!obj)
-    return NULL;
-
-  GlueAccessibilityObject* result =
-      static_cast<GlueAccessibilityObject*>(obj->wrapper());
-  if (!result)
-    result = CreateInstance(obj);
-
-  return result;
-}