Move renderer accessibility to subdir and add OWNERS

content/renderer/renderer_accessibility_complete.cc

Index: content/renderer/renderer_accessibility_complete.cc
diff --git a/content/renderer/renderer_accessibility_complete.cc b/content/renderer/renderer_accessibility_complete.cc
deleted file mode 100644
index 1e203b3d43bd658a0dbed483c70f9f71f104f397..0000000000000000000000000000000000000000
--- a/content/renderer/renderer_accessibility_complete.cc
+++ /dev/null
@@ -1,546 +0,0 @@
-// Copyright (c) 2012 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 "content/renderer/renderer_accessibility_complete.h"
-
-#include "base/bind.h"
-#include "base/message_loop.h"
-#include "content/renderer/accessibility_node_serializer.h"
-#include "content/renderer/render_view_impl.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebAccessibilityObject.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebInputElement.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebNode.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
-
-using WebKit::WebAccessibilityNotification;
-using WebKit::WebAccessibilityObject;
-using WebKit::WebDocument;
-using WebKit::WebFrame;
-using WebKit::WebNode;
-using WebKit::WebPoint;
-using WebKit::WebRect;
-using WebKit::WebSize;
-using WebKit::WebView;
-
-namespace content {
-
-bool WebAccessibilityNotificationToAccessibilityNotification(
-    WebAccessibilityNotification notification,
-    AccessibilityNotification* type) {
-  switch (notification) {
-    case WebKit::WebAccessibilityNotificationActiveDescendantChanged:
-      *type = AccessibilityNotificationActiveDescendantChanged;
-      break;
-    case WebKit::WebAccessibilityNotificationCheckedStateChanged:
-      *type = AccessibilityNotificationCheckStateChanged;
-      break;
-    case WebKit::WebAccessibilityNotificationChildrenChanged:
-      *type = AccessibilityNotificationChildrenChanged;
-      break;
-    case WebKit::WebAccessibilityNotificationFocusedUIElementChanged:
-      *type = AccessibilityNotificationFocusChanged;
-      break;
-    case WebKit::WebAccessibilityNotificationLayoutComplete:
-      *type = AccessibilityNotificationLayoutComplete;
-      break;
-    case WebKit::WebAccessibilityNotificationLiveRegionChanged:
-      *type = AccessibilityNotificationLiveRegionChanged;
-      break;
-    case WebKit::WebAccessibilityNotificationLoadComplete:
-      *type = AccessibilityNotificationLoadComplete;
-      break;
-    case WebKit::WebAccessibilityNotificationMenuListItemSelected:
-      *type = AccessibilityNotificationMenuListItemSelected;
-      break;
-    case WebKit::WebAccessibilityNotificationMenuListValueChanged:
-      *type = AccessibilityNotificationMenuListValueChanged;
-      break;
-    case WebKit::WebAccessibilityNotificationRowCollapsed:
-      *type = AccessibilityNotificationRowCollapsed;
-      break;
-    case WebKit::WebAccessibilityNotificationRowCountChanged:
-      *type = AccessibilityNotificationRowCountChanged;
-      break;
-    case WebKit::WebAccessibilityNotificationRowExpanded:
-      *type = AccessibilityNotificationRowExpanded;
-      break;
-    case WebKit::WebAccessibilityNotificationScrolledToAnchor:
-      *type = AccessibilityNotificationScrolledToAnchor;
-      break;
-    case WebKit::WebAccessibilityNotificationSelectedChildrenChanged:
-      *type = AccessibilityNotificationSelectedChildrenChanged;
-      break;
-    case WebKit::WebAccessibilityNotificationSelectedTextChanged:
-      *type = AccessibilityNotificationSelectedTextChanged;
-      break;
-    case WebKit::WebAccessibilityNotificationValueChanged:
-      *type = AccessibilityNotificationValueChanged;
-      break;
-    default:
-      DLOG(WARNING)
-          << "WebKit accessibility notification not handled in switch!";
-      return false;
-  }
-  return true;
-}
-
-RendererAccessibilityComplete::RendererAccessibilityComplete(
-    RenderViewImpl* render_view)
-    : RendererAccessibility(render_view),
-      ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)),
-      browser_root_(NULL),
-      last_scroll_offset_(gfx::Size()),
-      ack_pending_(false) {
-  WebAccessibilityObject::enableAccessibility();
-
-  const WebDocument& document = GetMainDocument();
-  if (!document.isNull()) {
-    // It's possible that the webview has already loaded a webpage without
-    // accessibility being enabled. Initialize the browser's cached
-    // accessibility tree by sending it a 'load complete' notification.
-    HandleAccessibilityNotification(
-        document.accessibilityObject(),
-        AccessibilityNotificationLayoutComplete);
-  }
-}
-
-RendererAccessibilityComplete::~RendererAccessibilityComplete() {
-}
-
-bool RendererAccessibilityComplete::OnMessageReceived(
-    const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(RendererAccessibilityComplete, message)
-    IPC_MESSAGE_HANDLER(AccessibilityMsg_SetFocus, OnSetFocus)
-    IPC_MESSAGE_HANDLER(AccessibilityMsg_DoDefaultAction,
-                        OnDoDefaultAction)
-    IPC_MESSAGE_HANDLER(AccessibilityMsg_Notifications_ACK,
-                        OnNotificationsAck)
-    IPC_MESSAGE_HANDLER(AccessibilityMsg_ScrollToMakeVisible,
-                        OnScrollToMakeVisible)
-    IPC_MESSAGE_HANDLER(AccessibilityMsg_ScrollToPoint,
-                        OnScrollToPoint)
-    IPC_MESSAGE_HANDLER(AccessibilityMsg_SetTextSelection,
-                        OnSetTextSelection)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
-
-void RendererAccessibilityComplete::FocusedNodeChanged(const WebNode& node) {
-  const WebDocument& document = GetMainDocument();
-  if (document.isNull())
-    return;
-
-  if (node.isNull()) {
-    // When focus is cleared, implicitly focus the document.
-    // TODO(dmazzoni): Make WebKit send this notification instead.
-    HandleAccessibilityNotification(
-        document.accessibilityObject(),
-        AccessibilityNotificationBlur);
-  }
-}
-
-void RendererAccessibilityComplete::DidFinishLoad(WebKit::WebFrame* frame) {
-  const WebDocument& document = GetMainDocument();
-  if (document.isNull())
-    return;
-
-  // Check to see if the root accessibility object has changed, to work
-  // around WebKit bugs that cause AXObjectCache to be cleared
-  // unnecessarily.
-  // TODO(dmazzoni): remove this once rdar://5794454 is fixed.
-  WebAccessibilityObject new_root = document.accessibilityObject();
-  if (!browser_root_ || new_root.axID() != browser_root_->id) {
-    HandleAccessibilityNotification(
-        new_root,
-        AccessibilityNotificationLayoutComplete);
-  }
-}
-
-void RendererAccessibilityComplete::HandleWebAccessibilityNotification(
-    const WebAccessibilityObject& obj,
-    WebAccessibilityNotification notification) {
-  AccessibilityNotification temp;
-  if (!WebAccessibilityNotificationToAccessibilityNotification(
-      notification, &temp)) {
-    return;
-  }
-
-  HandleAccessibilityNotification(obj, temp);
-}
-
-void RendererAccessibilityComplete::HandleAccessibilityNotification(
-    const WebKit::WebAccessibilityObject& obj,
-    AccessibilityNotification notification) {
-  const WebDocument& document = GetMainDocument();
-  if (document.isNull())
-    return;
-
-  gfx::Size scroll_offset = document.frame()->scrollOffset();
-  if (scroll_offset != last_scroll_offset_) {
-    // Make sure the browser is always aware of the scroll position of
-    // the root document element by posting a generic notification that
-    // will update it.
-    // TODO(dmazzoni): remove this as soon as
-    // https://bugs.webkit.org/show_bug.cgi?id=73460 is fixed.
-    last_scroll_offset_ = scroll_offset;
-    if (!obj.equals(document.accessibilityObject())) {
-      HandleAccessibilityNotification(
-          document.accessibilityObject(),
-          AccessibilityNotificationLayoutComplete);
-    }
-  }
-
-  // Add the accessibility object to our cache and ensure it's valid.
-  AccessibilityHostMsg_NotificationParams acc_notification;
-  acc_notification.id = obj.axID();
-  acc_notification.notification_type = notification;
-
-  // Discard duplicate accessibility notifications.
-  for (uint32 i = 0; i < pending_notifications_.size(); ++i) {
-    if (pending_notifications_[i].id == acc_notification.id &&
-        pending_notifications_[i].notification_type ==
-            acc_notification.notification_type) {
-      return;
-    }
-  }
-  pending_notifications_.push_back(acc_notification);
-
-  if (!ack_pending_ && !weak_factory_.HasWeakPtrs()) {
-    // When no accessibility notifications are in-flight post a task to send
-    // the notifications to the browser. We use PostTask so that we can queue
-    // up additional notifications.
-    MessageLoop::current()->PostTask(
-        FROM_HERE,
-        base::Bind(
-            &RendererAccessibilityComplete::
-                SendPendingAccessibilityNotifications,
-            weak_factory_.GetWeakPtr()));
-  }
-}
-
-RendererAccessibilityComplete::BrowserTreeNode::BrowserTreeNode() : id(0) {}
-
-RendererAccessibilityComplete::BrowserTreeNode::~BrowserTreeNode() {}
-
-void RendererAccessibilityComplete::SendPendingAccessibilityNotifications() {
-  const WebDocument& document = GetMainDocument();
-  if (document.isNull())
-    return;
-
-  if (pending_notifications_.empty())
-    return;
-
-  ack_pending_ = true;
-
-  // Make a copy of the notifications, because it's possible that
-  // actions inside this loop will cause more notifications to be
-  // queued up.
-  std::vector<AccessibilityHostMsg_NotificationParams> src_notifications =
-      pending_notifications_;
-  pending_notifications_.clear();
-
-  // Allow WebKit to cache intermediate results since we're doing a bunch
-  // of read-only queries at once.
-  WebAccessibilityObject rootObject = document.accessibilityObject();
-  rootObject.startCachingComputedObjectAttributesUntilTreeMutates();
-
-  // Generate a notification message from each WebKit notification.
-  std::vector<AccessibilityHostMsg_NotificationParams> notification_msgs;
-
-  // Loop over each notification and generate an updated notification message.
-  for (size_t i = 0; i < src_notifications.size(); ++i) {
-    AccessibilityHostMsg_NotificationParams& notification =
-        src_notifications[i];
-
-    // TODO(dtseng): Come up with a cleaner way of deciding to include children.
-    int root_id = rootObject.axID();
-    bool includes_children = ShouldIncludeChildren(notification) ||
-        root_id == notification.id;
-    WebAccessibilityObject obj = document.accessibilityObjectFromID(
-        notification.id);
-    if (!obj.updateBackingStoreAndCheckValidity())
-      continue;
-
-    // The browser may not have this object yet, for example if we get a
-    // notification on an object that was recently added, or if we get a
-    // notification on a node before the page has loaded. Work our way
-    // up the parent chain until we find a node the browser has, or until
-    // we reach the root.
-    while (browser_id_map_.find(obj.axID()) == browser_id_map_.end() &&
-           !obj.isDetached() &&
-           obj.axID() != root_id) {
-      obj = obj.parentObject();
-      includes_children = true;
-      if (notification.notification_type ==
-          AccessibilityNotificationChildrenChanged) {
-        notification.id = obj.axID();
-      }
-    }
-
-    if (obj.isDetached()) {
-#ifndef NDEBUG
-      if (logging_)
-        LOG(WARNING) << "Got notification on object that is invalid or has"
-                     << " invalid ancestor. Id: " << obj.axID();
-#endif
-      continue;
-    }
-
-    // Another potential problem is that this notification may be on an
-    // object that is detached from the tree. Determine if this node is not a
-    // child of its parent, and if so move the notification to the parent.
-    // TODO(dmazzoni): see if this can be removed after
-    // https://bugs.webkit.org/show_bug.cgi?id=68466 is fixed.
-    if (obj.axID() != root_id) {
-      WebAccessibilityObject parent = obj.parentObject();
-      while (!parent.isDetached() &&
-             parent.accessibilityIsIgnored()) {
-        parent = parent.parentObject();
-      }
-
-      if (parent.isDetached()) {
-        NOTREACHED();
-        continue;
-      }
-      bool is_child_of_parent = false;
-      for (unsigned int i = 0; i < parent.childCount(); ++i) {
-        if (parent.childAt(i).equals(obj)) {
-          is_child_of_parent = true;
-          break;
-        }
-      }
-
-      if (!is_child_of_parent) {
-        obj = parent;
-        notification.id = obj.axID();
-        includes_children = true;
-      }
-    }
-
-    AccessibilityHostMsg_NotificationParams notification_msg;
-    notification_msg.notification_type = notification.notification_type;
-    notification_msg.id = notification.id;
-    notification_msg.includes_children = includes_children;
-    SerializeAccessibilityNode(obj,
-                               &notification_msg.acc_tree,
-                               includes_children);
-    if (obj.axID() == root_id) {
-      DCHECK_EQ(notification_msg.acc_tree.role,
-                AccessibilityNodeData::ROLE_WEB_AREA);
-      notification_msg.acc_tree.role =
-          AccessibilityNodeData::ROLE_ROOT_WEB_AREA;
-    }
-    notification_msgs.push_back(notification_msg);
-
-    if (includes_children)
-      UpdateBrowserTree(notification_msg.acc_tree);
-
-#ifndef NDEBUG
-    if (logging_) {
-      LOG(INFO) << "Accessibility update: \n"
-          << "routing id=" << routing_id()
-          << " notification="
-          << AccessibilityNotificationToString(notification.notification_type)
-          << "\n" << notification_msg.acc_tree.DebugString(true);
-    }
-#endif
-  }
-
-  Send(new AccessibilityHostMsg_Notifications(routing_id(), notification_msgs));
-}
-
-void RendererAccessibilityComplete::UpdateBrowserTree(
-    const AccessibilityNodeData& renderer_node) {
-  BrowserTreeNode* browser_node = NULL;
-  base::hash_map<int32, BrowserTreeNode*>::iterator iter =
-      browser_id_map_.find(renderer_node.id);
-  if (iter != browser_id_map_.end()) {
-    browser_node = iter->second;
-    ClearBrowserTreeNode(browser_node);
-  } else {
-    DCHECK_EQ(renderer_node.role, AccessibilityNodeData::ROLE_ROOT_WEB_AREA);
-    if (browser_root_) {
-      ClearBrowserTreeNode(browser_root_);
-      browser_id_map_.erase(browser_root_->id);
-      delete browser_root_;
-    }
-    browser_root_ = new BrowserTreeNode;
-    browser_node = browser_root_;
-    browser_node->id = renderer_node.id;
-    browser_id_map_[browser_node->id] = browser_node;
-  }
-  browser_node->children.reserve(renderer_node.children.size());
-  for (size_t i = 0; i < renderer_node.children.size(); ++i) {
-    BrowserTreeNode* browser_child_node = new BrowserTreeNode;
-    browser_child_node->id = renderer_node.children[i].id;
-    browser_id_map_[browser_child_node->id] = browser_child_node;
-    browser_node->children.push_back(browser_child_node);
-    UpdateBrowserTree(renderer_node.children[i]);
-  }
-}
-
-void RendererAccessibilityComplete::ClearBrowserTreeNode(
-    BrowserTreeNode* browser_node) {
-  for (size_t i = 0; i < browser_node->children.size(); ++i) {
-    browser_id_map_.erase(browser_node->children[i]->id);
-    ClearBrowserTreeNode(browser_node->children[i]);
-    delete browser_node->children[i];
-  }
-  browser_node->children.clear();
-}
-
-void RendererAccessibilityComplete::OnDoDefaultAction(int acc_obj_id) {
-  const WebDocument& document = GetMainDocument();
-  if (document.isNull())
-    return;
-
-  WebAccessibilityObject obj = document.accessibilityObjectFromID(acc_obj_id);
-  if (obj.isDetached()) {
-#ifndef NDEBUG
-    if (logging_)
-      LOG(WARNING) << "DoDefaultAction on invalid object id " << acc_obj_id;
-#endif
-    return;
-  }
-
-  obj.performDefaultAction();
-}
-
-void RendererAccessibilityComplete::OnScrollToMakeVisible(
-    int acc_obj_id, gfx::Rect subfocus) {
-  const WebDocument& document = GetMainDocument();
-  if (document.isNull())
-    return;
-
-  WebAccessibilityObject obj = document.accessibilityObjectFromID(acc_obj_id);
-  if (obj.isDetached()) {
-#ifndef NDEBUG
-    if (logging_)
-      LOG(WARNING) << "ScrollToMakeVisible on invalid object id " << acc_obj_id;
-#endif
-    return;
-  }
-
-  obj.scrollToMakeVisibleWithSubFocus(
-      WebRect(subfocus.x(), subfocus.y(),
-              subfocus.width(), subfocus.height()));
-
-  // Make sure the browser gets a notification when the scroll
-  // position actually changes.
-  // TODO(dmazzoni): remove this once this bug is fixed:
-  // https://bugs.webkit.org/show_bug.cgi?id=73460
-  HandleAccessibilityNotification(
-      document.accessibilityObject(),
-      AccessibilityNotificationLayoutComplete);
-}
-
-void RendererAccessibilityComplete::OnScrollToPoint(
-    int acc_obj_id, gfx::Point point) {
-  const WebDocument& document = GetMainDocument();
-  if (document.isNull())
-    return;
-
-  WebAccessibilityObject obj = document.accessibilityObjectFromID(acc_obj_id);
-  if (obj.isDetached()) {
-#ifndef NDEBUG
-    if (logging_)
-      LOG(WARNING) << "ScrollToPoint on invalid object id " << acc_obj_id;
-#endif
-    return;
-  }
-
-  obj.scrollToGlobalPoint(WebPoint(point.x(), point.y()));
-
-  // Make sure the browser gets a notification when the scroll
-  // position actually changes.
-  // TODO(dmazzoni): remove this once this bug is fixed:
-  // https://bugs.webkit.org/show_bug.cgi?id=73460
-  HandleAccessibilityNotification(
-      document.accessibilityObject(),
-      AccessibilityNotificationLayoutComplete);
-}
-
-void RendererAccessibilityComplete::OnSetTextSelection(
-    int acc_obj_id, int start_offset, int end_offset) {
-  const WebDocument& document = GetMainDocument();
-  if (document.isNull())
-    return;
-
-  WebAccessibilityObject obj = document.accessibilityObjectFromID(acc_obj_id);
-  if (obj.isDetached()) {
-#ifndef NDEBUG
-    if (logging_)
-      LOG(WARNING) << "SetTextSelection on invalid object id " << acc_obj_id;
-#endif
-    return;
-  }
-
-  // TODO(dmazzoni): support elements other than <input>.
-  WebKit::WebNode node = obj.node();
-  if (!node.isNull() && node.isElementNode()) {
-    WebKit::WebElement element = node.to<WebKit::WebElement>();
-    WebKit::WebInputElement* input_element =
-        WebKit::toWebInputElement(&element);
-    if (input_element && input_element->isTextField())
-      input_element->setSelectionRange(start_offset, end_offset);
-  }
-}
-
-void RendererAccessibilityComplete::OnNotificationsAck() {
-  DCHECK(ack_pending_);
-  ack_pending_ = false;
-  SendPendingAccessibilityNotifications();
-}
-
-void RendererAccessibilityComplete::OnSetFocus(int acc_obj_id) {
-  const WebDocument& document = GetMainDocument();
-  if (document.isNull())
-    return;
-
-  WebAccessibilityObject obj = document.accessibilityObjectFromID(acc_obj_id);
-  if (obj.isDetached()) {
-#ifndef NDEBUG
-    if (logging_) {
-      LOG(WARNING) << "OnSetAccessibilityFocus on invalid object id "
-                   << acc_obj_id;
-    }
-#endif
-    return;
-  }
-
-  WebAccessibilityObject root = document.accessibilityObject();
-  if (root.isDetached()) {
-#ifndef NDEBUG
-    if (logging_) {
-      LOG(WARNING) << "OnSetAccessibilityFocus but root is invalid";
-    }
-#endif
-    return;
-  }
-
-  // By convention, calling SetFocus on the root of the tree should clear the
-  // current focus. Otherwise set the focus to the new node.
-  if (acc_obj_id == root.axID())
-    render_view()->GetWebView()->clearFocusedNode();
-  else
-    obj.setFocused(true);
-}
-
-bool RendererAccessibilityComplete::ShouldIncludeChildren(
-    const AccessibilityHostMsg_NotificationParams& notification) {
-  AccessibilityNotification type = notification.notification_type;
-  if (type == AccessibilityNotificationChildrenChanged ||
-      type == AccessibilityNotificationLoadComplete ||
-      type == AccessibilityNotificationLiveRegionChanged ||
-      type == AccessibilityNotificationSelectedChildrenChanged) {
-    return true;
-  }
-  return false;
-}
-
-}  // namespace content