Tracking text selection on the browser side in OOPIF.

content/browser/renderer_host/render_widget_host_view_aura.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/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include <set>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 1526 matching lines @@
     return false;
   *rect = ConvertRectToScreen(composition_character_bounds_[index]);
   return true;
 }
 
 bool RenderWidgetHostViewAura::HasCompositionText() const {
   return has_composition_text_;
 }
 
 bool RenderWidgetHostViewAura::GetTextRange(gfx::Range* range) const {
-  range->set_start(selection_text_offset_);
-  range->set_end(selection_text_offset_ + selection_text_.length());
+  if (!text_input_manager_)
+    return false;
+
+  const TextInputManager::TextSelection* selection =
+      text_input_manager_->GetTextSelection();
+  if (!selection)
+    return false;
+
+  range->set_start(selection->offset);
+  range->set_end(selection->offset + selection->text.length());
   return true;
 }
 
 bool RenderWidgetHostViewAura::GetCompositionTextRange(
     gfx::Range* range) const {
   // TODO(suzhe): implement this method when fixing http://crbug.com/55130.
   NOTIMPLEMENTED();
   return false;
 }
 
 bool RenderWidgetHostViewAura::GetSelectionRange(gfx::Range* range) const {
-  range->set_start(selection_range_.start());
-  range->set_end(selection_range_.end());
+  if (!text_input_manager_)
+    return false;
+
+  const TextInputManager::TextSelection* selection =
+      text_input_manager_->GetTextSelection();
+  if (!selection)
+    return false;
+
+  range->set_start(selection->range.start());
+  range->set_end(selection->range.end());
   return true;
 }
 
 bool RenderWidgetHostViewAura::SetSelectionRange(const gfx::Range& range) {
   // TODO(suzhe): implement this method when fixing http://crbug.com/55130.
   NOTIMPLEMENTED();
   return false;
 }
 
 bool RenderWidgetHostViewAura::DeleteRange(const gfx::Range& range) {
   // TODO(suzhe): implement this method when fixing http://crbug.com/55130.
   NOTIMPLEMENTED();
   return false;
 }
 
 bool RenderWidgetHostViewAura::GetTextFromRange(
     const gfx::Range& range,
     base::string16* text) const {
-  gfx::Range selection_text_range(selection_text_offset_,
-      selection_text_offset_ + selection_text_.length());
+  if (!text_input_manager_)
+    return false;
+
+  const TextInputManager::TextSelection* selection =
+      text_input_manager_->GetTextSelection();
+  if (!selection)
+    return false;
+
+  gfx::Range selection_text_range(selection->offset,
+                                  selection->offset + selection->text.length());
 
   if (!selection_text_range.Contains(range)) {
     text->clear();
     return false;
   }
   if (selection_text_range.EqualsIgnoringDirection(range)) {
     // Avoid calling substr whose performance is low.
-    *text = selection_text_;
+    *text = selection->text;
   } else {
-    *text = selection_text_.substr(
-        range.GetMin() - selection_text_offset_,
-        range.length());
+    *text = selection->text.substr(range.GetMin() - selection->offset,
+                                   range.length());
   }
   return true;
 }
 
 void RenderWidgetHostViewAura::OnInputMethodChanged() {
   // TODO(wjmaclean): can host_ ever be null?
   if (!host_)
     return;
 
   // TODO(suzhe): implement the newly added “locale” property of HTML DOM
@@ skipping 1397 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewBase, public:
 
 // static
 void RenderWidgetHostViewBase::GetDefaultScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, NULL);
 }
 
 }  // namespace content