Cefglue.Avalonia.ffmpeg/CefGlue/Classes.Handlers/CefResourceBundleHandler.cs

namespace Xilium.CefGlue
{
    using System;
    using System.Collections.Generic;
    using System.Diagnostics;
    using System.Runtime.InteropServices;
    using Xilium.CefGlue.Interop;

    /// <summary>
    /// Class used to implement a custom resource bundle interface. See CefSettings
    /// for additional options related to resource bundle loading. The methods of
    /// this class may be called on multiple threads.
    /// </summary>
    public abstract unsafe partial class CefResourceBundleHandler
    {
        private int get_localized_string(cef_resource_bundle_handler_t* self, int string_id, cef_string_t* @string)
        {
            CheckSelf(self);

            string mValue;
            var result = GetLocalizedString(string_id, out mValue);

            if (result)
            {
                cef_string_t.Copy(mValue, @string);
                return 1;
            }
            else return 0;
        }

        /// <summary>
        /// Called to retrieve a localized translation for the specified |string_id|.
        /// To provide the translation set |string| to the translation string and
        /// return true. To use the default translation return false. Include
        /// cef_pack_strings.h for a listing of valid string ID values.
        /// </summary>
        protected virtual bool GetLocalizedString(int stringId, out string value)
        {
            value = null;
            return false;
        }


        private int get_data_resource(cef_resource_bundle_handler_t* self, int resource_id, void** data, UIntPtr* data_size)
        {
            CheckSelf(self);

            void* mData;
            UIntPtr mDataSize;
            var result = GetDataResource(resource_id, out mData, out mDataSize);

            if (result)
            {
                *data = mData;
                *data_size = mDataSize;
                return 1;
            }
            else return 0;
        }

        /// <summary>
        /// Called to retrieve data for the specified scale independent |resource_id|.
        /// To provide the resource data set |data| and |data_size| to the data pointer
        /// and size respectively and return true. To use the default resource data
        /// return false. The resource data will not be copied and must remain resident
        /// in memory. Include cef_pack_resources.h for a listing of valid resource ID
        /// values.
        /// </summary>
        protected virtual bool GetDataResource(int resourceId, out void* data, out UIntPtr dataSize)
        {
            data = null;
            dataSize = UIntPtr.Zero;
            return false;
        }


        private int get_data_resource_for_scale(cef_resource_bundle_handler_t* self, int resource_id, CefScaleFactor scale_factor, void** data, UIntPtr* data_size)
        {
            CheckSelf(self);

            void* mData;
            UIntPtr mDataSize;
            var result = GetDataResourceForScale(resource_id, scale_factor, out mData, out mDataSize);

            if (result)
            {
                *data = mData;
                *data_size = mDataSize;
                return 1;
            }
            else return 0;
        }

        /// <summary>
        /// Called to retrieve data for the specified |resource_id| nearest the scale
        /// factor |scale_factor|. To provide the resource data set |data| and
        /// |data_size| to the data pointer and size respectively and return true. To
        /// use the default resource data return false. The resource data will not be
        /// copied and must remain resident in memory. Include cef_pack_resources.h for
        /// a listing of valid resource ID values.
        /// </summary>
        protected virtual bool GetDataResourceForScale(int resourceId, CefScaleFactor scaleFactor, out void* data, out UIntPtr dataSize)
        {
            data = null;
            dataSize = UIntPtr.Zero;
            return false;
        }
    }
}