text: // Copyright (c) 2012 Marshall A. Greenblatt. All rights reserved.
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are
  // met:
  //
  //    * Redistributions of source code must retain the above copyright
  // notice, this list of conditions and the following disclaimer.
  //    * Redistributions in binary form must reproduce the above
  // copyright notice, this list of conditions and the following disclaimer
  // in the documentation and/or other materials provided with the
  // distribution.
  //    * Neither the name of Google Inc. nor the name Chromium Embedded
  // Framework nor the names of its contributors may be used to endorse
  // or promote products derived from this software without specific prior
  // written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  //
  // ---------------------------------------------------------------------------
  //
  // The contents of this file must follow a specific format in order to
  // support the CEF translator tool. See the translator.README.txt file in the
  // tools directory for more information.
  //
  
  #ifndef CEF_INCLUDE_CEF_JSDIALOG_HANDLER_H_
  #define CEF_INCLUDE_CEF_JSDIALOG_HANDLER_H_
  #pragma once
  
  #include "include/cef_base.h"
  #include "include/cef_browser.h"
  
  ///
  // Callback interface used for asynchronous continuation of JavaScript dialog
  // requests.
  ///
  /*--cef(source=library)--*/
  class CefJSDialogCallback : public virtual CefBaseRefCounted {
   public:
    ///
    // Continue the JS dialog request. Set |success| to true if the OK button was
    // pressed. The |user_input| value should be specified for prompt dialogs.
    ///
    /*--cef(capi_name=cont,optional_param=user_input)--*/
    virtual void Continue(bool success, const CefString& user_input) = 0;
  };
  
  ///
  // Implement this interface to handle events related to JavaScript dialogs. The
  // methods of this class will be called on the UI thread.
  ///
  /*--cef(source=client)--*/
  class CefJSDialogHandler : public virtual CefBaseRefCounted {
   public:
    typedef cef_jsdialog_type_t JSDialogType;
  
    ///
    // Called to run a JavaScript dialog. If |origin_url| is non-empty it can be
    // passed to the CefFormatUrlForSecurityDisplay function to retrieve a secure
    // and user-friendly display string. The |default_prompt_text| value will be
    // specified for prompt dialogs only. Set |suppress_message| to true and
    // return false to suppress the message (suppressing messages is preferable to
    // immediately executing the callback as this is used to detect presumably
    // malicious behavior like spamming alert messages in onbeforeunload). Set
    // |suppress_message| to false and return false to use the default
    // implementation (the default implementation will show one modal dialog at a
    // time and suppress any additional dialog requests until the displayed dialog
    // is dismissed). Return true if the application will use a custom dialog or
    // if the callback has been executed immediately. Custom dialogs may be either
    // modal or modeless. If a custom dialog is used the application must execute
    // |callback| once the custom dialog is dismissed.
    ///
    /*--cef(optional_param=origin_url,optional_param=accept_lang,
            optional_param=message_text,optional_param=default_prompt_text)--*/
    virtual bool OnJSDialog(CefRefPtr<CefBrowser> browser,
                            const CefString& origin_url,
                            JSDialogType dialog_type,
                            const CefString& message_text,
                            const CefString& default_prompt_text,
                            CefRefPtr<CefJSDialogCallback> callback,
                            bool& suppress_message) {
      return false;
    }
  
    ///
    // Called to run a dialog asking the user if they want to leave a page. Return
    // false to use the default dialog implementation. Return true if the
    // application will use a custom dialog or if the callback has been executed
    // immediately. Custom dialogs may be either modal or modeless. If a custom
    // dialog is used the application must execute |callback| once the custom
    // dialog is dismissed.
    ///
    /*--cef(optional_param=message_text)--*/
    virtual bool OnBeforeUnloadDialog(CefRefPtr<CefBrowser> browser,
                                      const CefString& message_text,
                                      bool is_reload,
                                      CefRefPtr<CefJSDialogCallback> callback) {
      return false;
    }
  
    ///
    // Called to cancel any pending dialogs and reset any saved dialog state. Will
    // be called due to events like page navigation irregardless of whether any
    // dialogs are currently pending.
    ///
    /*--cef()--*/
    virtual void OnResetDialogState(CefRefPtr<CefBrowser> browser) {}
  
    ///
    // Called when the default implementation dialog is closed.
    ///
    /*--cef()--*/
    virtual void OnDialogClosed(CefRefPtr<CefBrowser> browser) {}
  };
  
  #endif  // CEF_INCLUDE_CEF_JSDIALOG_HANDLER_H_
  