Move renderer accessibility to subdir and add OWNERS

content/renderer/renderer_accessibility_focus_only.cc

-// 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_focus_only.h"
-
-#include "content/common/accessibility_node_data.h"
-#include "content/renderer/render_view_impl.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebElement.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebNode.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
-
-using WebKit::WebDocument;
-using WebKit::WebElement;
-using WebKit::WebFrame;
-using WebKit::WebNode;
-using WebKit::WebView;
-
-namespace {
-// The root node will always have id 1. Let each child node have a new
-// id starting with 2.
-const int kInitialId = 2;
-}
-
-namespace content {
-
-RendererAccessibilityFocusOnly::RendererAccessibilityFocusOnly(
-    RenderViewImpl* render_view)
-    : RendererAccessibility(render_view),
-      next_id_(kInitialId) {
-}
-
-RendererAccessibilityFocusOnly::~RendererAccessibilityFocusOnly() {
-}
-
-void RendererAccessibilityFocusOnly::HandleWebAccessibilityNotification(
-    const WebKit::WebAccessibilityObject& obj,
-    WebKit::WebAccessibilityNotification notification) {
-  // Do nothing.
-}
-
-void RendererAccessibilityFocusOnly::FocusedNodeChanged(const WebNode& node) {
-  // Send the new accessible tree and post a native focus event.
-  HandleFocusedNodeChanged(node, true);
-}
-
-void RendererAccessibilityFocusOnly::DidFinishLoad(WebKit::WebFrame* frame) {
-  WebView* view = render_view()->GetWebView();
-  if (view->focusedFrame() != frame)
-    return;
-
-  WebDocument document = frame->document();
-  // Send an accessible tree to the browser, but do not post a native
-  // focus event. This is important so that if focus is initially in an
-  // editable text field, Windows will know to pop up the keyboard if the
-  // user touches it and focus doesn't change.
-  HandleFocusedNodeChanged(document.focusedNode(), false);
-}
-
-void RendererAccessibilityFocusOnly::HandleFocusedNodeChanged(
-    const WebNode& node,
-    bool send_focus_event) {
-  const WebDocument& document = GetMainDocument();
-  if (document.isNull())
-    return;
-
-  bool node_has_focus;
-  bool node_is_editable_text;
-  // Check HasIMETextFocus first, because it will correctly handle
-  // focus in a text box inside a ppapi plug-in. Otherwise fall back on
-  // checking the focused node in WebKit.
-  if (render_view_->HasIMETextFocus()) {
-    node_has_focus = true;
-    node_is_editable_text = true;
-  } else {
-    node_has_focus = !node.isNull();
-    node_is_editable_text =
-        node_has_focus && render_view_->IsEditableNode(node);
-  }
-
-  std::vector<AccessibilityHostMsg_NotificationParams> notifications;
-  notifications.push_back(AccessibilityHostMsg_NotificationParams());
-  AccessibilityHostMsg_NotificationParams& notification = notifications[0];
-
-  // If we want to update the browser's accessibility tree but not send a
-  // native focus changed notification, we can send a LayoutComplete
-  // notification, which doesn't post a native event on Windows.
-  notification.notification_type =
-      send_focus_event ?
-      AccessibilityNotificationFocusChanged :
-      AccessibilityNotificationLayoutComplete;
-
-  // This means that the new tree we send supercedes any previous tree,
-  // not just a previous node.
-  notification.includes_children = true;
-
-  // Set the id that the notification applies to: the root node if nothing
-  // has focus, otherwise the focused node.
-  notification.id = node_has_focus ? next_id_ : 1;
-
-  // Always include the root of the tree, the document. It always has id 1.
-  notification.acc_tree.id = 1;
-  notification.acc_tree.role = AccessibilityNodeData::ROLE_ROOT_WEB_AREA;
-  notification.acc_tree.state =
-      (1 << AccessibilityNodeData::STATE_READONLY) |
-      (1 << AccessibilityNodeData::STATE_FOCUSABLE);
-  if (!node_has_focus)
-    notification.acc_tree.state |= (1 << AccessibilityNodeData::STATE_FOCUSED);
-  notification.acc_tree.location = gfx::Rect(render_view_->size());
-
-  notification.acc_tree.children.push_back(AccessibilityNodeData());
-  AccessibilityNodeData& child = notification.acc_tree.children[0];
-  child.id = next_id_;
-  child.role = AccessibilityNodeData::ROLE_GROUP;
-
-  if (!node.isNull() && node.isElementNode()) {
-    child.location = gfx::Rect(
-        const_cast<WebNode&>(node).to<WebElement>().boundsInViewportSpace());
-  } else if (render_view_->HasIMETextFocus()) {
-    child.location = notification.acc_tree.location;
-  } else {
-    child.location = gfx::Rect();
-  }
-
-  if (node_has_focus) {
-    child.state =
-        (1 << AccessibilityNodeData::STATE_FOCUSABLE) |
-        (1 << AccessibilityNodeData::STATE_FOCUSED);
-    if (!node_is_editable_text)
-      child.state |= (1 << AccessibilityNodeData::STATE_READONLY);
-  }
-
-#ifndef NDEBUG
-  if (logging_) {
-    LOG(INFO) << "Accessibility update: \n"
-        << "routing id=" << routing_id()
-        << " notification="
-        << AccessibilityNotificationToString(notification.notification_type)
-        << "\n" << notification.acc_tree.DebugString(true);
-  }
-#endif
-
-  Send(new AccessibilityHostMsg_Notifications(routing_id(), notifications));
-
-  // Increment the id, wrap back when we get past a million.
-  next_id_++;
-  if (next_id_ > 1000000)
-    next_id_ = kInitialId;
-}
-
-}  // namespace content