[TTS] Extract tapped text before showing UI.

chrome/browser/android/contextualsearch/contextual_search_context.h

 // Copyright 2015 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.
 
 #ifndef CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_CONTEXT_H_
 #define CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_CONTEXT_H_
 
 #include <string>
 
 #include "base/android/jni_android.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "url/gurl.h"
 
 // Encapsulates key parts of a Contextual Search Context, including surrounding
 // text.
 struct ContextualSearchContext {
  public:
   ContextualSearchContext(JNIEnv* env, jobject obj);
   // Constructor for tests.
-  ContextualSearchContext(const std::string& selected_text,
-                          const std::string& home_country,
+  ContextualSearchContext(const std::string& home_country,
                           const GURL& page_url,
                           const std::string& encoding);
   ~ContextualSearchContext();
 
   // Calls the destructor.  Should be called when this native object is no
   // longer needed.
   void Destroy(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
 
   // Returns the native |ContextualSearchContext| given the Java object.
   static base::WeakPtr<ContextualSearchContext> FromJavaContextualSearchContext(
       const base::android::JavaRef<jobject>& j_contextual_search_context);
 
   // Returns whether this context can be resolved.
   // The context can be resolved only after calling SetResolveProperites.
   bool CanResolve() const;
 
   // Returns whether the base page URL may be sent (according to the Java
   // policy).
   bool CanSendBasePageUrl() const;
 
   // Sets the properties needed to resolve a context.
   void SetResolveProperties(
       JNIEnv* env,
       jobject obj,
-      const base::android::JavaParamRef<jstring>& j_selection,
       const base::android::JavaParamRef<jstring>& j_home_country,
       jboolean j_may_send_base_page_url);
 
+  // Adjust the current selection offsets by the given signed amounts.
+  void AdjustSelection(JNIEnv* env,
+                       jobject obj,
+                       jint j_start_adjust,
+                       jint j_end_adjust);
+
   // Gets the URL of the base page.
   const GURL GetBasePageUrl() const;
   // Sets the URL of the base page.
   void SetBasePageUrl(const GURL& base_page_url);
 
   // Gets the encoding of the base page.  This is not very important, since
   // the surrounding text stored here in a base::string16 is implicitly encoded
   // in UTF-16 (see http://www.chromium.org/developers/chromium-string-usage).
   const std::string GetBasePageEncoding() const;
   void SetBasePageEncoding(const std::string& base_page_encoding);
 
   // Gets the country code of the home country of the user, or an empty string.
   const std::string GetHomeCountry() const;
 
   // Sets the selection and surroundings.
   void SetSelectionSurroundings(int start_offset,
                                 int end_offset,
                                 const base::string16& surrounding_text);
 
-  // Gets the original selection.
-  const std::string GetOriginalSelectedText() const;
-
   // Gets the text surrounding the selection (including the selection).
   const base::string16 GetSurroundingText() const;
 
   // Gets the start offset of the selection within the surrounding text (in
   // characters).
   int GetStartOffset() const;
   // Gets the end offset of the selection within the surrounding text (in
   // characters).
   int GetEndOffset() const;
 
   // Gets a WeakPtr to this instance.
   base::WeakPtr<ContextualSearchContext> GetWeakPtr();
 
  private:
   bool can_resolve;
   bool can_send_base_page_url;
 
-  std::string selected_text;
   std::string home_country;
   GURL base_page_url;
   std::string base_page_encoding;
   base::string16 surrounding_text;
   int start_offset;
   int end_offset;
 
   // The linked Java object.
   base::android::ScopedJavaGlobalRef<jobject> java_object_;
 
   // Member variables should appear before the WeakPtrFactory, to ensure
   // that any WeakPtrs to this instance are invalidated before its members
   // variable's destructors are executed, rendering them invalid.
   base::WeakPtrFactory<ContextualSearchContext> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ContextualSearchContext);
 };
 
 bool RegisterContextualSearchContext(JNIEnv* env);
 
 #endif  // CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_CONTEXT_H_