using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace CodePrint
{
    //用于編寫(xiě)與切換語(yǔ)言相關(guān)的變量和代碼
    class MultiLanguage
    {
        //當(dāng)前默認(rèn)語(yǔ)言
        public static string DefaultLanguage = "zh-CN";

        /// <summary>
        /// 修改默認(rèn)語(yǔ)言
        /// </summary>
        /// <param name="lang">待設(shè)置默認(rèn)語(yǔ)言</param>
        public static void SetDefaultLanguage(string lang)
        {
            System.Threading.Thread.CurrentThread.CurrentUICulture = new System.Globalization.CultureInfo(lang);
            DefaultLanguage = lang;
            Properties.Settings.Default.DefaultLanguage = lang;
            Properties.Settings.Default.Save();
        }


        /// <summary>
        /// 加載語(yǔ)言
        /// </summary>
        /// <param name="form">加載語(yǔ)言的窗口</param>
        /// <param name="formType">窗口的類(lèi)型</param>
        public static void LoadLanguage(Logins form, Type formType)
        {
            if (form != null)
            {
                System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(formType);
                resources.ApplyResources(form, "$this");
                Loading(form, resources);
            }
        }

        /// <summary>
        /// 加載語(yǔ)言
        /// </summary>
        /// <param name="control">控件</param>
        /// <param name="resources">語(yǔ)言資源</param>
        private static void Loading(Control control, System.ComponentModel.ComponentResourceManager resources)
        {
            if (control is MenuStrip)
            {
                //將資源與控件對(duì)應(yīng)
                resources.ApplyResources(control, control.Name);
                MenuStrip ms = (MenuStrip)control;
                if (ms.Items.Count > 0)
                {
                    foreach (ToolStripMenuItem c in ms.Items)
                    {
                        //遍歷菜單
                        Loading(c, resources);
                    }
                }
            }

            foreach (Control c in control.Controls)
            {
                resources.ApplyResources(c, c.Name);
                Loading(c, resources);
            }
        }


        /// <summary>
        /// 遍歷菜單
        /// </summary>
        /// <param name="item">菜單項(xiàng)</param>
        /// <param name="resources">語(yǔ)言資源</param>
        private static void Loading(ToolStripMenuItem item, System.ComponentModel.ComponentResourceManager resources)
        {
            if (item is ToolStripMenuItem)
            {
                resources.ApplyResources(item, item.Name);
                ToolStripMenuItem tsmi = (ToolStripMenuItem)item;
                if (tsmi.DropDownItems.Count > 0)
                {
                    foreach (ToolStripMenuItem c in tsmi.DropDownItems)
                    {
                        Loading(c, resources);
                    }
                }
            }
        }
    }
}

private void Login_Load(object sender, EventArgs e)
        {
            //設(shè)置combobox的值
            string language = Properties.Settings.Default.DefaultLanguage;
            if (language == "zh-CN")
            {
                comboBox1.Text = "簡(jiǎn)體中文(默認(rèn))";
            }
            else if (language == "en-US")
            {
                comboBox1.Text = "English";
            }
            else if(language == "th-TH")
            {
                comboBox1.Text = "???";
            }
            MultiLanguage.LoadLanguage(this, typeof(Logins));
        }

private void languageTxt_SelectedIndexChanged(object sender, EventArgs e)
        {
            comboBox1.Enabled = false;
            if (comboBox1.Text == "中文")
            {
                //修改默認(rèn)語(yǔ)言
                MultiLanguage.SetDefaultLanguage("zh-CN");
                //對(duì)所有打開(kāi)的窗口重新加載語(yǔ)言
                foreach (Form form in Application.OpenForms)
                {
                    LoadAll(form);
                }
            }
            else if (comboBox1.Text == "English")
            {
                //修改默認(rèn)語(yǔ)言
                MultiLanguage.SetDefaultLanguage("en-US");
                //對(duì)所有打開(kāi)的窗口重新加載語(yǔ)言
                foreach (Form form in Application.OpenForms)
                {
                    LoadAll(form);
                }
            }
            else if(comboBox1.Text == "???")
            {
                //修改默認(rèn)語(yǔ)言
                MultiLanguage.SetDefaultLanguage("th-TH");
                //對(duì)所有打開(kāi)的窗口重新加載語(yǔ)言
                foreach (Form form in Application.OpenForms)
                {
                    LoadAll(form);
                }
            }
            comboBox1.Enabled = true;
        }

private void LoadAll(Form form)
        {
            if (form.Name == "Logins")
            {
                MultiLanguage.LoadLanguage((Logins)form, typeof(Logins));
            }
            else if (form.Name == "CodePrint")
            {
                MultiLanguage.LoadLanguage((Logins)form, typeof(CodePrint));
            }
            else if(form.Name == "CodePrint")
            {
                MultiLanguage.LoadLanguage((Logins)form, typeof(CodePrint));
            }
        }