Show scheme in black and content in gray for data: protocol urls

components/omnibox/browser/omnibox_view.h

 // 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.
 
 // This file defines the interface class OmniboxView.  Each toolkit will
 // implement the edit view differently, so that code is inherently platform
 // specific.  However, the OmniboxEditModel needs to do some communication with
 // the view.  Since the model is shared between platforms, we need to define an
 // interface that all view implementations will share.
 
 #ifndef COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_VIEW_H_
 #define COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_VIEW_H_
 
 #include <stddef.h>
 
 #include <string>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/omnibox/browser/autocomplete_match.h"
 #include "ui/base/window_open_disposition.h"
 #include "ui/gfx/native_widget_types.h"
+#include "ui/gfx/range/range.h"
 
 class GURL;
 class OmniboxClient;
 class OmniboxEditController;
 class OmniboxViewMacTest;
 class OmniboxEditModel;
 
 namespace gfx {
 enum class VectorIconId;
 }
@@ skipping 205 matching lines @@
   // Fills |state| with the current text state.
   void GetState(State* state);
 
   // Returns the delta between |before| and |after|.
   StateChanges GetStateChanges(const State& before,
                                           const State& after);
 
   // Internally invoked whenever the text changes in some way.
   virtual void TextChanged();
 
+  // Returns whether the current text in the model represents a URL. Provided
+  // to allow tests to override the result.
+  virtual bool CurrentTextIsURL();
+
   // Return the number of characters in the current buffer. The name
   // |GetTextLength| can't be used as the Windows override of this class
   // inherits from a class that defines a method with that name.
   virtual int GetOmniboxTextLength() const = 0;
 
   // Try to parse the current text as a URL and colorize the components.
   virtual void EmphasizeURLComponents() = 0;
 
   OmniboxEditController* controller() { return controller_; }
   const OmniboxEditController* controller() const { return controller_; }
 
+  // Marks part (or, if |range| is invalid, all) of the current text as
+  // emphasized or de-emphasized, by changing its color.
+  virtual void SetEmphasis(bool emphasize, const gfx::Range& range) = 0;
+
+  // Sets the color and strikethrough state for |range|, which represents the
+  // current scheme, based on the current security state.  Schemes are displayed
+  // in different ways for different security levels.
+  virtual void UpdateSchemeStyle(const gfx::Range& range) = 0;
+
+  // Parses |display_text|, then invokes SetEmphasis() and UpdateSchemeStyle()
+  // appropriately. If the text is a query string, there is no scheme, and
+  // everything is emphasized equally, whereas for URLs the scheme may be styled
+  // based on the current security state, with parts of the URL de-emphasized to
+  // draw attention to whatever best represents the "identity" of the current
+  // URL.
+  void UpdateTextStyle(const base::string16& display_text,
+                       const AutocompleteSchemeClassifier& classifier);
+
  private:
   friend class OmniboxViewMacTest;
 
   // |model_| can be NULL in tests.
   std::unique_ptr<OmniboxEditModel> model_;
   OmniboxEditController* controller_;
 
   DISALLOW_COPY_AND_ASSIGN(OmniboxView);
 };
 
 #endif  // COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_VIEW_H_