cef/include/cef_preference.h

// Copyright (c) 2022 Marshall A. Greenblatt. All rights reserved.
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// The contents of this file must follow a specific format in order to
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#ifndef CEF_INCLUDE_CEF_PREFERENCE_H_
#define CEF_INCLUDE_CEF_PREFERENCE_H_
#pragma once

#include <vector>

#include "include/cef_base.h"
#include "include/cef_values.h"

///
/// Class that manages custom preference registrations.
///
/*--cef(source=library)--*/
class CefPreferenceRegistrar : public CefBaseScoped {
 public:
  ///
  /// Register a preference with the specified |name| and |default_value|. To
  /// avoid conflicts with built-in preferences the |name| value should contain
  /// an application-specific prefix followed by a period (e.g. "myapp.value").
  /// The contents of |default_value| will be copied. The data type for the
  /// preference will be inferred from |default_value|'s type and cannot be
  /// changed after registration. Returns true on success. Returns false if
  /// |name| is already registered or if |default_value| has an invalid type.
  /// This method must be called from within the scope of the
  /// CefBrowserProcessHandler::OnRegisterCustomPreferences callback.
  ///
  /*--cef()--*/
  virtual bool AddPreference(const CefString& name,
                             CefRefPtr<CefValue> default_value) = 0;
};

///
/// Manage access to preferences. Many built-in preferences are registered by
/// Chromium. Custom preferences can be registered in
/// CefBrowserProcessHandler::OnRegisterCustomPreferences.
///
/*--cef(source=library,no_debugct_check)--*/
class CefPreferenceManager : public virtual CefBaseRefCounted {
 public:
  ///
  /// Returns the global preference manager object.
  ///
  /*--cef()--*/
  static CefRefPtr<CefPreferenceManager> GetGlobalPreferenceManager();

  ///
  /// Returns true if a preference with the specified |name| exists. This method
  /// must be called on the browser process UI thread.
  ///
  /*--cef()--*/
  virtual bool HasPreference(const CefString& name) = 0;

  ///
  /// Returns the value for the preference with the specified |name|. Returns
  /// NULL if the preference does not exist. The returned object contains a copy
  /// of the underlying preference value and modifications to the returned
  /// object will not modify the underlying preference value. This method must
  /// be called on the browser process UI thread.
  ///
  /*--cef()--*/
  virtual CefRefPtr<CefValue> GetPreference(const CefString& name) = 0;

  ///
  /// Returns all preferences as a dictionary. If |include_defaults| is true
  /// then preferences currently at their default value will be included. The
  /// returned object contains a copy of the underlying preference values and
  /// modifications to the returned object will not modify the underlying
  /// preference values. This method must be called on the browser process UI
  /// thread.
  ///
  /*--cef()--*/
  virtual CefRefPtr<CefDictionaryValue> GetAllPreferences(
      bool include_defaults) = 0;

  ///
  /// Returns true if the preference with the specified |name| can be modified
  /// using SetPreference. As one example preferences set via the command-line
  /// usually cannot be modified. This method must be called on the browser
  /// process UI thread.
  ///
  /*--cef()--*/
  virtual bool CanSetPreference(const CefString& name) = 0;

  ///
  /// Set the |value| associated with preference |name|. Returns true if the
  /// value is set successfully and false otherwise. If |value| is NULL the
  /// preference will be restored to its default value. If setting the
  /// preference fails then |error| will be populated with a detailed
  /// description of the problem. This method must be called on the browser
  /// process UI thread.
  ///
  /*--cef(optional_param=value)--*/
  virtual bool SetPreference(const CefString& name,
                             CefRefPtr<CefValue> value,
                             CefString& error) = 0;
};

#endif  // CEF_INCLUDE_CEF_PREFERENCE_H_