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 7f50d089887d2555c85fd5e32562c2e2eb96d9a9..b09ae5069420f5c96af8b022c118a5a5e52fc008 100644
--- a/content/browser/renderer_host/text_input_manager.h
+++ b/content/browser/renderer_host/text_input_manager.h
@@ -9,17 +9,15 @@
 #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;
 
-namespace gfx {
-class Range;
-}
-
 namespace content {
 
 class RenderWidgetHostImpl;
@@ -58,6 +56,27 @@ class CONTENT_EXPORT TextInputManager {
     virtual void OnImeCompositionRangeChanged(
         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();
@@ -84,6 +103,12 @@ class CONTENT_EXPORT TextInputManager {
   // Returns a vector of rects representing the character bounds.
   const std::vector<gfx::Rect>* GetCompositionCharacterBounds() const;
 
+  // The following method returns 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) const;
+
   // ---------------------------------------------------------------------------
   // The following methods are called by RWHVs on the tab to update their IME-
   // related state.
@@ -108,6 +133,12 @@ class CONTENT_EXPORT TextInputManager {
       const gfx::Range& range,
       const std::vector<gfx::Rect>& character_bounds);
 
+  // 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
@@ -177,6 +208,7 @@ class CONTENT_EXPORT TextInputManager {
   ViewMap<TextInputState> text_input_state_map_;
   ViewMap<SelectionRegion> selection_region_map_;
   ViewMap<CompositionRangeInfo> composition_range_info_map_;
+  ViewMap<TextSelection> text_selection_map_;
 
   base::ObserverList<Observer> observer_list_;