MenuHandler.cs

[mohamedosama914]

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

namespace Example.Handler { internal class MenuHandler : IContextMenuHandler { private string lastSelText = ""; private const int ShowDevTools = 26501; private const int CloseDevTools = 26502; private const int SaveImageAs = 26503; private const int SaveAsPage = 26504; private const int SaveLinkAs = 26505; private const int CopyLinkAddress = 26506; private const int CefSharpSupportedChromeExtensions = 30; private const int CefSharpVersion = 31; private const int BaiduSearchChinese = 32; private const int GoogleSearchChinese = 33; private const int GoogleSearchEgypt = 34; private const int ViewPageSource = 35; private const int Back = 36; private const int Forward = 37; private const int Reload = 38; private const int Stop = 39; private const int Find = 40; private const int Undo = 41; private const int Redo = 42; private const int Cut = 43; private const int Copy = 44; private const int Paste = 45; private const int Delete = 46; private const int SelectAll = 47;

    //  private const int All = 48;
    //  private const int All = 49;
    //  private const int All = 50;
    //  private const int All = 51;
    //  private const int All = 52;

    Form1 myForm;
    public MenuHandler(Form1 form) { myForm = form; }
    public MenuHandler() { }

    void IContextMenuHandler.OnBeforeContextMenu(IWebBrowser browserControl, IBrowser browser, IFrame frame, IContextMenuParams parameters, IMenuModel model)
    {
        //To disable the menu then call clear
        // model.Clear();

       // for (int i = 0; i < model.Count; i++) if ((int)model.GetCommandIdAt(i) == 234)
         model.Clear();   //About Adobe Flash
       // if (model.Count == 0) return;  // return;  No menu if 0 items (flash)

        // save text
        lastSelText = parameters.SelectionText;

        if (!string.IsNullOrEmpty(parameters.UnfilteredLinkUrl))
        {
        }

        if (model.Count > 0)
        {
            model.AddSeparator();
        }

        if (parameters.FrameUrl != null)
        {
           // copyFrameUrl = parameters.FrameUrl;
           //  model.AddSeparator();
        }

        ///
        ///
        ///

       // bool BackNoT = model.Remove(CefMenuCommand.Back); // Remove "Back" option
       // bool ForwardNOT = model.Remove(CefMenuCommand.Forward); // Remove "Forward" option
       // bool PrintNot = model.Remove(CefMenuCommand.Print); // Remove "Print" option
       // bool ViewSourceNOT = model.Remove(CefMenuCommand.ViewSource); // Remove "View Source" option
        //Removing existing menu item
        //bool removed = model.Remove(CefMenuCommand.ViewSource); // Remove "View Source" option
        if (parameters.LinkUrl != "")
        {
            model.AddItem((CefMenuCommand)SaveLinkAs, "Save As Link");
            model.AddItem((CefMenuCommand)SaveImageAs, "Save as images");
            model.AddItem((CefMenuCommand)CopyLinkAddress, "Copy Link Address");
            model.AddSeparator();
        }

        // Add new menu example items
        model.AddItem((CefMenuCommand)Back, "Back");
        model.AddItem((CefMenuCommand)Forward, "Forward");
        model.AddItem((CefMenuCommand)Reload, "Reload");
        model.AddItem((CefMenuCommand)Stop, "Stop");
        model.AddSeparator();
        model.AddItem((CefMenuCommand)ViewPageSource, "View Page Source");
        model.AddItem((CefMenuCommand)ShowDevTools, "Developer Tools");
        model.AddSeparator();
        model.AddItem((CefMenuCommand)SaveImageAs, "Save As Images");
        model.AddItem((CefMenuCommand)SaveAsPage, "Save As Page");
        model.AddItem((CefMenuCommand)SaveLinkAs, "Save As Link");

        model.AddSeparator();
        model.AddItem((CefMenuCommand)Cut, "Cut");
        model.AddItem((CefMenuCommand)Copy, "Copy");
        model.AddItem((CefMenuCommand)Paste, "Paste");
        model.AddItem((CefMenuCommand)Delete, "Delete");
        model.AddItem((CefMenuCommand)SelectAll, "SelectAll");
        model.AddSeparator();
        model.AddItem((CefMenuCommand)Undo, "Undo");
        model.AddItem((CefMenuCommand)Redo, "Redo");

        model.AddSeparator();
        model.AddItem((CefMenuCommand)CefSharpSupportedChromeExtensions, "CefSharp Supported Chrome Extensions");
        model.AddItem((CefMenuCommand)CefSharpVersion, "CefSharp Version");
        model.AddSeparator();
        model.AddItem((CefMenuCommand)BaiduSearchChinese, "Baidu Search Chinese");
        model.AddItem((CefMenuCommand)GoogleSearchChinese, "Google Search Chinese");
        model.AddItem((CefMenuCommand)GoogleSearchEgypt, "Google Search Egypt");
    }

    bool IContextMenuHandler.OnContextMenuCommand(IWebBrowser browserControl, IBrowser browser, IFrame frame, IContextMenuParams parameters, CefMenuCommand commandId, CefEventFlags eventFlags)
    {
        if ((int)commandId == ShowDevTools)
        {
            browser.ShowDevTools();
        }
        if ((int)commandId == CloseDevTools)
        {
            browser.CloseDevTools();
        }
        if ((int)commandId == SaveImageAs)
        {
            browser.GetHost().StartDownload(parameters.SourceUrl);
            return true;

        }
        if ((int)commandId == SaveLinkAs)
        {
            browser.GetHost().StartDownload(parameters.LinkUrl);
            return true;
        }           
        if ((int)commandId == CopyLinkAddress)
        {
            Clipboard.SetText(parameters.LinkUrl);
        }

        if ((int)commandId == SaveAsPage)
        {
            browser.GetHost().StartDownload(parameters.PageUrl);

            return true;
        }

        if ((int)commandId == CefSharpVersion)
        {
            browser.MainFrame.LoadUrl("chrome://chrome-urls/");
             return true;
        }
        if ((int)commandId == CefSharpSupportedChromeExtensions)
        {
            browser.MainFrame.LoadUrl("chrome://extensions-support/");

            return true;
        }
        if ((int)commandId == BaiduSearchChinese)
        {
            browser.MainFrame.LoadUrl("https://www.baidu.com/");

            return true;
        }
        if ((int)commandId == GoogleSearchChinese)
        {
            browser.MainFrame.LoadUrl("https://www.google.com.hk");

            return true;
        }
        if ((int)commandId == GoogleSearchEgypt)
        {
            browser.MainFrame.LoadUrl("https://www.google.com.eg");

            return true;
        }
        if ((int)commandId == Back)
        {
            browser.GoBack();

            return true;
        }
        if ((int)commandId == Forward)
        {
            browser.GoForward();

            return true;
        }
        if ((int)commandId == Reload)
        {
            browser.MainFrame.Browser.Reload();

            return true;
        }
        if ((int)commandId == Stop)
        {
            browser.StopLoad();

            return true;
        }
        if ((int)commandId == ViewPageSource)
        {
            browser.MainFrame.ViewSource();

            return true;
        }
        if ((int)commandId == Find)
        {
            browser.GetHost().Find(0, parameters.SelectionText, true, false, false);
            return true;
        }

        if ((int)commandId == Undo)
        {
            browser.MainFrame.Undo();

            return true;
        }
        if ((int)commandId == Redo)
        {
            browser.MainFrame.Redo();

            return true;
        }

        if ((int)commandId == Cut)
        {
            browser.MainFrame.Cut();

            return true;
        }
        if ((int)commandId == Copy)
        {
            browser.MainFrame.Copy();

            return true;
        }
        if ((int)commandId == Paste)
        {
            browser.MainFrame.Paste();

            return true;
        }
        if ((int)commandId == Delete)
        {
            browser.MainFrame.Delete();

            return true;
        }
        if ((int)commandId == SelectAll)
        {
            browser.MainFrame.SelectAll();

            return true;
        }

        return false;
    }

    void IContextMenuHandler.OnContextMenuDismissed(IWebBrowser browserControl, IBrowser browser, IFrame frame)
    {

    }

    bool IContextMenuHandler.RunContextMenu(IWebBrowser browserControl, IBrowser browser, IFrame frame, IContextMenuParams parameters, IMenuModel model, IRunContextMenuCallback callback)
    {
        return false;
    }
}

}