373 lines
16 KiB
C#
373 lines
16 KiB
C#
namespace VideoBrowser.Controls.CefSharpBrowser.Handlers
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{
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using CefSharp;
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using CefSharp.Wpf;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Windows;
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using System.Windows.Controls;
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using VideoBrowser.Common;
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using VideoBrowser.Controls.CefSharpBrowser.Helpers;
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/// <summary>
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/// Defines the <see cref="CefContextMenuHandler" />.
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/// </summary>
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public class CefContextMenuHandler : IContextMenuHandler
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{
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#region Constants
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private const CefMenuCommand CopyLinkAdressId = (CefMenuCommand)10000;
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private const CefMenuCommand OpenImageInNewTabId = (CefMenuCommand)10001;
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private const CefMenuCommand OpenInNewTabId = (CefMenuCommand)10002;
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private const CefMenuCommand OpenInNewWindowId = (CefMenuCommand)10003;
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private const CefMenuCommand SearchInWebsiteId = (CefMenuCommand)10004;
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#endregion Constants
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#region Properties
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/// <summary>
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/// Gets or sets the OpenInNewTabAction.
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/// </summary>
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public Action<string> OpenInNewTabAction { get; set; }
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/// <summary>
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/// Gets or sets the OpenInNewWindowAction.
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/// </summary>
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public Action<string> OpenInNewWindowAction { get; set; }
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/// <summary>
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/// Gets or sets the SearchEngineQuery.
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/// </summary>
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public string SearchEngineQuery { get; set; } = "https://www.youtube.com/results?search_query=";
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/// <summary>
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/// Gets the CopyLinkAddress.
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/// </summary>
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private static (CefMenuCommand Id, string Text) CopyLinkAddress { get; } = (CopyLinkAdressId, "Copy link address");
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/// <summary>
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/// Gets the OpenImageInNewTab.
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/// </summary>
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private static (CefMenuCommand Id, string Text) OpenImageInNewTab { get; } = (OpenImageInNewTabId, "Open image in new tab");
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/// <summary>
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/// Gets the OpenInNewTab.
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/// </summary>
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private static (CefMenuCommand Id, string Text) OpenInNewTab { get; } = (OpenInNewTabId, "Open in new tab");
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/// <summary>
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/// Gets the OpenInNewWindow.
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/// </summary>
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private static (CefMenuCommand Id, string Text) OpenInNewWindow { get; } = (OpenInNewWindowId, "Open in new window");
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/// <summary>
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/// Gets the SearchInWebsite.
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/// </summary>
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private static (CefMenuCommand Id, string Text) SearchInWebsite { get; } = (SearchInWebsiteId, "Search in Youtube");
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#endregion Properties
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#region Methods
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/// <summary>
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/// The OnBeforeContextMenu.
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/// </summary>
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/// <param name="chromiumWebBrowser">The chromiumWebBrowser<see cref="IWebBrowser"/>.</param>
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/// <param name="browser">The browser<see cref="IBrowser"/>.</param>
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/// <param name="frame">The frame<see cref="IFrame"/>.</param>
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/// <param name="parameters">The parameters<see cref="IContextMenuParams"/>.</param>
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/// <param name="model">The model<see cref="IMenuModel"/>.</param>
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public virtual void OnBeforeContextMenu(IWebBrowser chromiumWebBrowser, IBrowser browser, IFrame frame, IContextMenuParams parameters, IMenuModel model)
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{
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var linkExist = !string.IsNullOrEmpty(parameters.LinkUrl);
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var selectionTextExist = !string.IsNullOrEmpty(parameters.SelectionText);
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var sourceUrlExist = !string.IsNullOrEmpty(parameters.SourceUrl);
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if (linkExist || selectionTextExist)
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{
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model.AddSeparator();
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}
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////model.Clear();
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if (linkExist)
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{
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this.AddItem(model, CopyLinkAddress.Id, CopyLinkAddress.Text);
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this.AddItem(model, OpenInNewTab.Id, OpenInNewTab.Text);
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this.AddItem(model, OpenInNewWindow.Id, OpenInNewWindow.Text);
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}
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if (sourceUrlExist && (parameters.SourceUrl != parameters.PageUrl))
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{
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if (parameters.SourceUrl.IsImageUrl())
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{
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this.AddItem(model, OpenImageInNewTab.Id, OpenImageInNewTab.Text);
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}
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}
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if (selectionTextExist)
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{
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this.AddItem(model, SearchInWebsite.Id, SearchInWebsite.Text);
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}
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}
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/// <summary>
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/// The OnContextMenuCommand.
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/// </summary>
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/// <param name="chromiumWebBrowser">The chromiumWebBrowser<see cref="IWebBrowser"/>.</param>
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/// <param name="browser">The browser<see cref="IBrowser"/>.</param>
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/// <param name="frame">The frame<see cref="IFrame"/>.</param>
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/// <param name="parameters">The parameters<see cref="IContextMenuParams"/>.</param>
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/// <param name="commandId">The commandId<see cref="CefMenuCommand"/>.</param>
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/// <param name="eventFlags">The eventFlags<see cref="CefEventFlags"/>.</param>
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/// <returns>The <see cref="bool"/>.</returns>
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public virtual bool OnContextMenuCommand(IWebBrowser chromiumWebBrowser, IBrowser browser, IFrame frame, IContextMenuParams parameters, CefMenuCommand commandId, CefEventFlags eventFlags)
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{
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return true;
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}
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/// <summary>
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/// The OnContextMenuDismissed.
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/// </summary>
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/// <param name="chromiumWebBrowser">The chromiumWebBrowser<see cref="IWebBrowser"/>.</param>
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/// <param name="browser">The browser<see cref="IBrowser"/>.</param>
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/// <param name="frame">The frame<see cref="IFrame"/>.</param>
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public virtual void OnContextMenuDismissed(IWebBrowser chromiumWebBrowser, IBrowser browser, IFrame frame)
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{
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var webBrowser = (ChromiumWebBrowser)chromiumWebBrowser;
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webBrowser.Dispatcher.Invoke(() =>
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{
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webBrowser.ContextMenu = null;
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});
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}
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/// <summary>
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/// The GetMenuItems.
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/// </summary>
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/// <param name="model">The model<see cref="IMenuModel"/>.</param>
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/// <returns>The <see cref="IEnumerable{Tuple{string, CefMenuCommand, bool}}"/>.</returns>
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private static IEnumerable<Tuple<string, CefMenuCommand, bool>> GetMenuItems(IMenuModel model)
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{
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for (var i = 0; i < model.Count; i++)
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{
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var header = model.GetLabelAt(i);
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var commandId = model.GetCommandIdAt(i);
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var isEnabled = model.IsEnabledAt(i);
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yield return new Tuple<string, CefMenuCommand, bool>(header, commandId, isEnabled);
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}
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}
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/// <summary>
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/// The AddItem.
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/// </summary>
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/// <param name="model">The model<see cref="IMenuModel"/>.</param>
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/// <param name="id">The id<see cref="CefMenuCommand"/>.</param>
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/// <param name="label">The label<see cref="string"/>.</param>
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private void AddItem(IMenuModel model, CefMenuCommand id, string label)
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{
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model.AddItem(id, label);
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model.SetEnabled(id, true);
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}
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/// <summary>
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/// The RunContextMenu.
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/// </summary>
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/// <param name="chromiumWebBrowser">The chromiumWebBrowser<see cref="IWebBrowser"/>.</param>
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/// <param name="browser">The browser<see cref="IBrowser"/>.</param>
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/// <param name="frame">The frame<see cref="IFrame"/>.</param>
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/// <param name="parameters">The parameters<see cref="IContextMenuParams"/>.</param>
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/// <param name="model">The model<see cref="IMenuModel"/>.</param>
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/// <param name="callback">The callback<see cref="IRunContextMenuCallback"/>.</param>
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/// <returns>The <see cref="bool"/>.</returns>
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bool IContextMenuHandler.RunContextMenu(IWebBrowser chromiumWebBrowser, IBrowser browser, IFrame frame, IContextMenuParams parameters, IMenuModel model, IRunContextMenuCallback callback)
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{
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//NOTE: Return false to use the built in Context menu - in WPF this requires you integrate into your existing message loop, read the General Usage Guide for more details
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//https://github.com/cefsharp/CefSharp/wiki/General-Usage#multithreadedmessageloop
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//return false;
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var webBrowser = (ChromiumWebBrowser)chromiumWebBrowser;
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//IMenuModel is only valid in the context of this method, so need to read the values before invoking on the UI thread
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var menuItems = GetMenuItems(model).ToList();
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var linkUrl = parameters.LinkUrl;
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var sourceUrl = parameters.SourceUrl;
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var selectionText = parameters.SelectionText;
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webBrowser.Dispatcher.Invoke(() =>
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{
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var menu = new ContextMenu
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{
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IsOpen = true
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};
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RoutedEventHandler handler = null;
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handler = (s, e) =>
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{
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menu.Closed -= handler;
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//If the callback has been disposed then it's already been executed
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//so don't call Cancel
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if (!callback.IsDisposed)
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{
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callback.Cancel();
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}
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};
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menu.Closed += handler;
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foreach (var item in menuItems)
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{
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if (item.Item2 == CefMenuCommand.NotFound && string.IsNullOrWhiteSpace(item.Item1))
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{
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menu.Items.Add(new Separator());
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continue;
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}
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menu.Items.Add(new MenuItem
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{
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Header = item.Item1.Replace("&", "_"),
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IsEnabled = item.Item3,
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Command = new RelayCommand((o) =>
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{
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//BUG: CEF currently not executing callbacks correctly so we manually map the commands below
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//see https://github.com/cefsharp/CefSharp/issues/1767
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//The following line worked in previous versions, it doesn't now, so custom EXAMPLE below
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//callback.Continue(item.Item2, CefEventFlags.None);
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//NOTE: Note all menu item options below have been tested, you can work out the rest
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switch (item.Item2)
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{
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////case CefMenuCommand.Copy:
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//// Clipboard.SetText(parameters.SelectionText);
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//// break;
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////case CefMenuCommand.Paste:
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//// chromiumWebBrowser.Paste();
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//// break;
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case CopyLinkAdressId:
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Clipboard.SetText(linkUrl);
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break;
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case OpenImageInNewTabId:
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this.OpenInNewTabAction?.Invoke(sourceUrl);
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break;
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case OpenInNewWindowId:
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this.OpenInNewWindowAction?.Invoke(linkUrl);
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break;
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case OpenInNewTabId:
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this.OpenInNewTabAction?.Invoke(linkUrl);
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break;
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case SearchInWebsiteId:
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var searchUrl = $"{this.SearchEngineQuery}{selectionText}";
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this.OpenInNewTabAction?.Invoke(searchUrl);
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break;
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case CefMenuCommand.Back:
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{
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browser.GoBack();
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break;
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}
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case CefMenuCommand.Forward:
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{
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browser.GoForward();
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break;
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}
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case CefMenuCommand.Cut:
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{
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browser.FocusedFrame.Cut();
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break;
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}
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case CefMenuCommand.Copy:
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{
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browser.FocusedFrame.Copy();
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break;
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}
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case CefMenuCommand.Paste:
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{
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browser.FocusedFrame.Paste();
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break;
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}
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case CefMenuCommand.Print:
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{
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browser.GetHost().Print();
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break;
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}
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case CefMenuCommand.ViewSource:
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{
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browser.FocusedFrame.ViewSource();
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break;
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}
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case CefMenuCommand.Undo:
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{
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browser.FocusedFrame.Undo();
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break;
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}
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case CefMenuCommand.StopLoad:
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{
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browser.StopLoad();
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break;
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}
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case CefMenuCommand.SelectAll:
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{
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browser.FocusedFrame.SelectAll();
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break;
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}
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case CefMenuCommand.Redo:
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{
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browser.FocusedFrame.Redo();
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break;
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}
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case CefMenuCommand.Find:
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{
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browser.GetHost().Find(parameters.SelectionText, true, false, false);
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break;
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}
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case CefMenuCommand.AddToDictionary:
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{
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browser.GetHost().AddWordToDictionary(parameters.MisspelledWord);
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break;
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}
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case CefMenuCommand.Reload:
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{
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browser.Reload();
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break;
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}
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case CefMenuCommand.ReloadNoCache:
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{
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browser.Reload(ignoreCache: true);
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break;
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}
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case (CefMenuCommand)26501:
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{
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browser.GetHost().ShowDevTools();
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break;
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}
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case (CefMenuCommand)26502:
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{
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browser.GetHost().CloseDevTools();
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break;
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}
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}
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}, "")
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});
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}
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webBrowser.ContextMenu = menu;
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});
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return true;
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}
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#endregion Methods
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}
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} |