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Copy pathBrowserForm.cs
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653 lines (561 loc) · 21.6 KB
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// Copyright © 2010 The CefSharp Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using System.Runtime.InteropServices;
using System.Threading.Tasks;
using System.Windows.Forms;
using CefSharp.Example;
using CefSharp.Example.Callback;
using CefSharp.Example.Handlers;
using CefSharp.WinForms.Host;
namespace CefSharp.WinForms.Example
{
public partial class BrowserForm : Form
{
private const string DefaultUrlForAddedTabs = "https://www.google.com";
// Default to a small increment:
private const double ZoomIncrement = 0.10;
private bool multiThreadedMessageLoopEnabled;
public BrowserForm(bool multiThreadedMessageLoopEnabled)
{
InitializeComponent();
var bitness = RuntimeInformation.ProcessArchitecture.ToString().ToLowerInvariant();
Text = "CefSharp.WinForms.Example - " + bitness;
WindowState = FormWindowState.Maximized;
Load += BrowserFormLoad;
//Only perform layout when control has completly finished resizing
ResizeBegin += (s, e) => SuspendLayout();
ResizeEnd += (s, e) => ResumeLayout(true);
this.multiThreadedMessageLoopEnabled = multiThreadedMessageLoopEnabled;
}
public IContainer Components
{
get
{
if (components == null)
{
components = new Container();
}
return components;
}
}
private void BrowserFormLoad(object sender, EventArgs e)
{
AddTab(CefExample.DefaultUrl);
}
/// <summary>
/// Used to add a Popup browser as a Tab
/// </summary>
/// <param name="browserHostControl"></param>
public void AddTab(ChromiumHostControl browserHostControl, string url)
{
browserTabControl.SuspendLayout();
var browser = new BrowserTabUserControl(browserHostControl)
{
Dock = DockStyle.Fill,
Bounds = browserTabControl.Bounds
};
var tabPage = new TabPage(url)
{
Dock = DockStyle.Fill
};
tabPage.Controls.Add(browser);
browserTabControl.TabPages.Add(tabPage);
//Make newly created tab active
browserTabControl.SelectedTab = tabPage;
browserTabControl.ResumeLayout(true);
}
private void AddTab(string url, int? insertIndex = null)
{
browserTabControl.SuspendLayout();
var browser = new BrowserTabUserControl(AddTab, url, multiThreadedMessageLoopEnabled)
{
Dock = DockStyle.Fill,
Bounds = browserTabControl.Bounds
};
var tabPage = new TabPage(url)
{
Dock = DockStyle.Fill
};
//This call isn't required for the sample to work.
//It's sole purpose is to demonstrate that #553 has been resolved.
browser.CreateControl();
tabPage.Controls.Add(browser);
if (insertIndex == null)
{
browserTabControl.TabPages.Add(tabPage);
}
else
{
browserTabControl.TabPages.Insert(insertIndex.Value, tabPage);
}
//Make newly created tab active
browserTabControl.SelectedTab = tabPage;
browserTabControl.ResumeLayout(true);
}
private void ExitMenuItemClick(object sender, EventArgs e)
{
ExitApplication();
}
private void ExitApplication()
{
Close();
}
private void AboutToolStripMenuItemClick(object sender, EventArgs e)
{
new AboutBox().ShowDialog();
}
public void RemoveTab(ChromiumHostControl ctrl)
{
if (!ctrl.IsDisposed)
{
var tabPage = ctrl.GetParentOfType<TabPage>();
if(tabPage == null)
{
throw new Exception("Unable to find parent TabPage");
}
browserTabControl.TabPages.Remove(tabPage);
}
}
private void FindMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
control.ShowFind();
}
}
private void CopySourceToClipBoardAsyncClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
control.CopySourceToClipBoardAsync();
}
}
private BrowserTabUserControl GetCurrentTabControl()
{
if (browserTabControl.SelectedIndex == -1)
{
return null;
}
var tabPage = browserTabControl.Controls[browserTabControl.SelectedIndex];
var control = tabPage.Controls[0] as BrowserTabUserControl;
return control;
}
private void NewTabToolStripMenuItemClick(object sender, EventArgs e)
{
AddTab(DefaultUrlForAddedTabs);
}
private void CloseTabToolStripMenuItemClick(object sender, EventArgs e)
{
if (browserTabControl.TabPages.Count == 0)
{
return;
}
var currentIndex = browserTabControl.SelectedIndex;
var tabPage = browserTabControl.TabPages[currentIndex];
var control = GetCurrentTabControl();
if (control != null && !control.IsDisposed)
{
control.Dispose();
}
browserTabControl.TabPages.Remove(tabPage);
tabPage.Dispose();
browserTabControl.SelectedIndex = currentIndex - 1;
if (browserTabControl.TabPages.Count == 0)
{
ExitApplication();
}
}
private void UndoMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
control.Browser.Undo();
}
}
private void RedoMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
control.Browser.Redo();
}
}
private void CutMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
control.Browser.Cut();
}
}
private void CopyMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
control.Browser.Copy();
}
}
private void PasteMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
control.Browser.Paste();
}
}
private void DeleteMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
control.Browser.Delete();
}
}
private void SelectAllMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
control.Browser.SelectAll();
}
}
private void PrintToolStripMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
control.Browser.Print();
}
}
private async void ShowDevToolsMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
var isDevToolsOpen = await control.CheckIfDevToolsIsOpenAsync();
if (!isDevToolsOpen)
{
control.Browser.ShowDevTools();
}
}
}
private async void ShowDevToolsDockedMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
var isDevToolsOpen = await control.CheckIfDevToolsIsOpenAsync();
if (!isDevToolsOpen)
{
var chromiumWebBrowser = control.Browser as ChromiumWebBrowser;
if (chromiumWebBrowser != null && chromiumWebBrowser.LifeSpanHandler != null)
{
control.ShowDevToolsDocked();
}
}
}
}
private async void CloseDevToolsMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
//Check if DevTools is open before closing, this isn't strictly required
//If DevTools isn't open and you call CloseDevTools it's a No-Op, so prefectly
//safe to call without checking
var isDevToolsOpen = await control.CheckIfDevToolsIsOpenAsync();
if (isDevToolsOpen)
{
control.Browser.CloseDevTools();
}
}
}
private void ZoomInToolStripMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
var task = control.Browser.GetZoomLevelAsync();
task.ContinueWith(previous =>
{
if (previous.Status == TaskStatus.RanToCompletion)
{
var currentLevel = previous.Result;
control.Browser.SetZoomLevel(currentLevel + ZoomIncrement);
}
else
{
throw new InvalidOperationException("Unexpected failure of calling CEF->GetZoomLevelAsync", previous.Exception);
}
}, TaskContinuationOptions.ExecuteSynchronously);
}
}
private void ZoomOutToolStripMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
var task = control.Browser.GetZoomLevelAsync();
task.ContinueWith(previous =>
{
if (previous.Status == TaskStatus.RanToCompletion)
{
var currentLevel = previous.Result;
control.Browser.SetZoomLevel(currentLevel - ZoomIncrement);
}
else
{
throw new InvalidOperationException("Unexpected failure of calling CEF->GetZoomLevelAsync", previous.Exception);
}
}, TaskContinuationOptions.ExecuteSynchronously);
}
}
private void CurrentZoomLevelToolStripMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
var task = control.Browser.GetZoomLevelAsync();
task.ContinueWith(previous =>
{
if (previous.Status == TaskStatus.RanToCompletion)
{
var currentLevel = previous.Result;
MessageBox.Show("Current ZoomLevel: " + currentLevel.ToString());
}
else
{
MessageBox.Show("Unexpected failure of calling CEF->GetZoomLevelAsync: " + previous.Exception.ToString());
}
}, TaskContinuationOptions.HideScheduler);
}
}
private void DoesActiveElementAcceptTextInputToolStripMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
var frame = control.Browser.GetFocusedFrame();
//Execute extension method
frame.ActiveElementAcceptsTextInput().ContinueWith(task =>
{
string message;
var icon = MessageBoxIcon.Information;
if (task.Exception == null)
{
var isText = task.Result;
message = string.Format("The active element is{0}a text entry element.", isText ? " " : " not ");
}
else
{
message = string.Format("Script evaluation failed. {0}", task.Exception.Message);
icon = MessageBoxIcon.Error;
}
MessageBox.Show(message, "Does active element accept text input", MessageBoxButtons.OK, icon);
});
}
}
private void DoesElementWithIdExistToolStripMenuItemClick(object sender, EventArgs e)
{
// This is the main thread, it's safe to create and manipulate form
// UI controls.
var dialog = new InputBox
{
Instructions = "Enter an element ID to find.",
Title = "Find an element with an ID"
};
dialog.OnEvaluate += (senderDlg, eDlg) =>
{
// This is also the main thread.
var control = GetCurrentTabControl();
if (control != null)
{
var frame = control.Browser.GetFocusedFrame();
//Execute extension method
frame.ElementWithIdExists(dialog.Value).ContinueWith(task =>
{
// Now we're not on the main thread, perhaps the
// Cef UI thread. It's not safe to work with
// form UI controls or to block this thread.
// Queue up a delegate to be executed on the
// main thread.
BeginInvoke(new Action(() =>
{
string message;
if (task.Exception == null)
{
message = task.Result.ToString();
}
else
{
message = string.Format("Script evaluation failed. {0}", task.Exception.Message);
}
dialog.Result = message;
}));
});
}
};
dialog.Show(this);
}
private void GoToDemoPageToolStripMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
control.Browser.LoadUrl("custom://cefsharp/ScriptedMethodsTest.html");
}
}
private void InjectJavascriptCodeToolStripMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
var frame = control.Browser.GetFocusedFrame();
//Execute extension method
frame.ListenForEvent("test-button", "click");
}
}
private async void PrintToPdfToolStripMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
var dialog = new SaveFileDialog
{
DefaultExt = ".pdf",
Filter = "Pdf documents (.pdf)|*.pdf"
};
if (dialog.ShowDialog() == DialogResult.OK)
{
var success = await control.Browser.PrintToPdfAsync(dialog.FileName, new PdfPrintSettings
{
MarginType = CefPdfPrintMarginType.Custom,
MarginBottom = 10,
MarginTop = 0,
MarginLeft = 20,
MarginRight = 10
});
if (success)
{
MessageBox.Show("Pdf was saved to " + dialog.FileName);
}
else
{
MessageBox.Show("Unable to save Pdf, check you have write permissions to " + dialog.FileName);
}
}
}
}
private void OpenDataUrlToolStripMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
const string html = "<html><head><title>Test</title></head><body><h1>Html Encoded in URL!</h1></body></html>";
control.Browser.LoadHtml(html, false);
}
}
private void OpenHttpBinOrgToolStripMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
control.Browser.LoadUrl("https://httpbin.org/");
}
}
private void RunFileDialogToolStripMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
control.Browser.GetBrowserHost().RunFileDialog(CefFileDialogMode.Open, "Open", null, new List<string> { "*.*" }, 0, new RunFileDialogCallback());
}
}
private void LoadExtensionsToolStripMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
//The sample extension only works for http(s) schemes
if (control.Browser.GetMainFrame().Url.StartsWith("http"))
{
var requestContext = control.Browser.GetRequestContext();
const string cefSharpExampleResourcesFolder =
#if !NETCOREAPP
@"..\..\..\..\CefSharp.Example\Extensions";
#else
@"..\..\..\..\..\CefSharp.Example\Resources";
#endif
var dir = Path.Combine(AppContext.BaseDirectory, cefSharpExampleResourcesFolder);
dir = Path.GetFullPath(dir);
if (!Directory.Exists(dir))
{
throw new DirectoryNotFoundException("Unable to locate example extensions folder - " + dir);
}
var extensionHandler = new ExtensionHandler
{
LoadExtensionPopup = (url) =>
{
BeginInvoke(new Action(() =>
{
var extensionForm = new Form();
var extensionBrowser = new ChromiumWebBrowser(url);
//extensionBrowser.IsBrowserInitializedChanged += (s, args) =>
//{
// extensionBrowser.ShowDevTools();
//};
extensionForm.Controls.Add(extensionBrowser);
extensionForm.Show(this);
}));
},
GetActiveBrowser = (extension, isIncognito) =>
{
//Return the active browser for which the extension will act upon
return control.Browser.BrowserCore;
}
};
requestContext.LoadExtensionsFromDirectory(dir, extensionHandler);
}
else
{
MessageBox.Show("The sample extension only works with http(s) schemes, please load a different website and try again", "Unable to load Extension");
}
}
}
private void JavascriptBindingStressTestToolStripMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
if (control != null)
{
control.Browser.LoadUrl(CefExample.BindingTestUrl);
control.Browser.LoadingStateChanged += (o, args) =>
{
if (args.IsLoading == false)
{
Task.Delay(10000).ContinueWith(t =>
{
if (control.Browser != null)
{
control.Browser.Reload();
}
});
}
};
}
}
private void HideScrollbarsToolStripMenuItemClick(object sender, EventArgs e)
{
var control = GetCurrentTabControl();
_ = control?.HideScrollbarsAsync();
}
}
}
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