Tracking text selection on the browser side in OOPIF.

content/browser/renderer_host/text_input_manager.h

Index: content/browser/renderer_host/text_input_manager.h
diff --git a/content/browser/renderer_host/text_input_manager.h b/content/browser/renderer_host/text_input_manager.h
index f240a1b9b7408130b72f6711ee0cd6cd15e76202..032b7e9b14ea998eaa91d880bb7e4d5e4579c540 100644
--- a/content/browser/renderer_host/text_input_manager.h
+++ b/content/browser/renderer_host/text_input_manager.h
@@ -9,9 +9,11 @@
 #include <utility>
 
 #include "base/observer_list.h"
+#include "base/strings/string16.h"
 #include "content/common/content_export.h"
 #include "content/common/text_input_state.h"
 #include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/range/range.h"
 #include "ui/gfx/selection_bound.h"
 
 struct ViewHostMsg_SelectionBounds_Params;
@@ -49,6 +51,27 @@ class CONTENT_EXPORT TextInputManager {
     virtual void OnSelectionBoundsChanged(
         TextInputManager* text_input_manager,
         RenderWidgetHostViewBase* updated_view) {}
+    // Called when the text selection for the |updated_view_| has changed.
+    virtual void OnTextSelectionChanged(
+        TextInputManager* text_input_manager,
+        RenderWidgetHostViewBase* updated_view) {}
+  };
+
+  // This struct is used to store text selection related information for views.
+  struct TextSelection {
+    TextSelection();
+    TextSelection(const TextSelection& other);
+    ~TextSelection();
+
+    // The offset of the text stored in |text| relative to the start of the web
+    // page.
+    size_t offset;
+
+    // The current selection range relative to the start of the web page.
+    gfx::Range range;
+
+    // The text inside and around the current selection range.
+    base::string16 text;
   };
 
   TextInputManager();
@@ -71,6 +94,13 @@ class CONTENT_EXPORT TextInputManager {
   gfx::Rect GetSelectionBoundsRect();
 
   // ---------------------------------------------------------------------------
+  // The following method return the text selection state for the given |view|.
+  // If |view| == nullptr, it will assume |active_view_| and return its state.
+  // In the case of |active_view_| == nullptr, the method will return nullptr.
+  const TextSelection* GetTextSelection(
+      RenderWidgetHostViewBase* view = nullptr);
+
+  // ---------------------------------------------------------------------------
   // The following methods are called by RWHVs on the tab to update their IME-
   // related state.
 
@@ -88,6 +118,12 @@ class CONTENT_EXPORT TextInputManager {
   void SelectionBoundsChanged(RenderWidgetHostViewBase* view,
                               const ViewHostMsg_SelectionBounds_Params& params);
 
+  // Updates the new text selection information for the |view|.
+  void SelectionChanged(RenderWidgetHostViewBase* view,
+                        const base::string16& text,
+                        size_t offset,
+                        const gfx::Range& range);
+
   // Registers the given |view| for tracking its TextInputState. This is called
   // by any view which has updates in its TextInputState (whether tab's RWHV or
   // that of a child frame). The |view| must unregister itself before being
@@ -147,10 +183,12 @@ class CONTENT_EXPORT TextInputManager {
   // Text selection bounds information for registered views.
   ViewMap<SelectionRegion> selection_region_map_;
 
+  ViewMap<TextSelection> text_selection_map_;
+
   base::ObserverList<Observer> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(TextInputManager);
 };
 }
 
-#endif  // CONTENT_BROWSER_RENDERER_HOST_TEXT_INPUT_MANAGER_H__
+#endif  // CONTENT_BROWSER_RENDERER_HOST_TEXT_INPUT_MANAGER_H__