ios/web/public/interstitials/web_interstitial_delegate.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef IOS_WEB_PUBLIC_INTERSTITIALS_WEB_INTERSTITIAL_DELEGATE_H_
   6 #define IOS_WEB_PUBLIC_INTERSTITIALS_WEB_INTERSTITIAL_DELEGATE_H_
   7
   8 #include <string>
   9
  10 #if defined(__OBJC__)
  11 @class UIColor;
  12 @class UIView;
  13 #else
  14 class UIColor;
  15 class UIView;
  16 #endif  // __OBJC__
  17
  18 namespace web {
  19
  20 // Superclass for delegates that provide data to a WebInterstitial.  After the
  21 // WebInterstitial is shown, it takes ownership of its delegate.
  22 class WebInterstitialDelegate {
  23  public:
  24   virtual ~WebInterstitialDelegate() {}
  25
  26   // Called when the interstitial is proceeded or cancelled. Note that this may
  27   // be called directly even if the embedder didn't call Proceed or DontProceed
  28   // on WebInterstitial, since navigations etc may cancel them.
  29   virtual void OnProceed() {}
  30   virtual void OnDontProceed() {}
  31 };
  32
  33 // Provides HTML to an HTMLWebInterstitialImpl.
  34 class HtmlWebInterstitialDelegate : public WebInterstitialDelegate {
  35  public:
  36   // Returns the HTML that should be displayed in the page.
  37   virtual std::string GetHtmlContents() const = 0;
  38
  39   // Invoked when a WebInterstitial receives a command via JavaScript.
  40   virtual void CommandReceived(const std::string& command) {}
  41 };
  42
  43 // Provides a native content view to NativeWebInterstitialImpls.
  44 class NativeWebInterstitialDelegate : public WebInterstitialDelegate {
  45  public:
  46   // Returns the content view for native interstitials.
  47   virtual UIView* GetContentView() = 0;
  48
  49   // The desired background color for the interstitial's scroll view.
  50   virtual UIColor* GetScrollViewBackgroundColor() const = 0;
  51 };
  52
  53 }  // namespace web
  54
  55 #endif  // IOS_WEB_PUBLIC_INTERSTITIALS_WEB_INTERSTITIAL_DELEGATE_H_