private Task <CefUrlRequest> CreateUrlRequest(CefRequest request, CefRequestContext context, CancellationToken cancellationToken)
{
_activeOperation.cancellationToken = cancellationToken;
if (CefApi.CurrentlyOn(CefThreadId.IO))
{
return(Task.FromResult(new CefUrlRequest(request, this, context)));
}
var tcs = new TaskCompletionSource <CefUrlRequest>();
CefNetApi.Post(CefThreadId.IO, () =>
{
try
{
cancellationToken.ThrowIfCancellationRequested();
tcs.SetResult(new CefUrlRequest(request, this, context));
}
catch (Exception e)
{
tcs.SetException(e);
}
});
return(tcs.Task);
}
/// <summary>
/// Sends the KeyPress event to the browser.
/// </summary>
/// <param name="c">The character associated with the key.</param>
/// <param name="ctrlKey">The Control key flag.</param>
/// <param name="altKey">The Alt key flag.</param>
/// <param name="shiftKey">The Shift key flag.</param>
/// <param name="metaKey">The Meta key flag.</param>
/// <param name="extendedKey">The extended key flag.</param>
public void SendKeyPress(char c, bool ctrlKey = false, bool altKey = false, bool shiftKey = false, bool metaKey = false, bool extendedKey = false)
{
CefBrowserHost browserHost = this.BrowserObject?.Host;
if (browserHost is null)
{
return;
}
CefEventFlags modifiers = CefEventFlags.None;
if (CefNetApi.IsShiftRequired(c))
{
shiftKey = !shiftKey;
}
if (shiftKey)
{
modifiers |= CefEventFlags.ShiftDown;
}
if (altKey)
{
modifiers |= CefEventFlags.AltDown;
}
if (ctrlKey)
{
modifiers |= CefEventFlags.ControlDown;
}
if (metaKey)
{
modifiers |= CefEventFlags.CommandDown;
}
VirtualKeys key = CefNetApi.GetVirtualKey(c);
var k = new CefKeyEvent();
k.Type = CefKeyEventType.Char;
k.Modifiers = (uint)modifiers;
k.IsSystemKey = altKey;
k.WindowsKeyCode = PlatformInfo.IsWindows ? c : (int)key;
k.NativeKeyCode = CefNetApi.GetNativeKeyCode(c, 0, modifiers, extendedKey);
k.Character = c;
k.UnmodifiedCharacter = c;
this.BrowserObject?.Host?.SendKeyEvent(k);
}
private void SendKeyChange(CefKeyEventType eventType, char c, bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, int repeatCount, bool extendedKey)
{
CefBrowserHost browserHost = this.BrowserObject?.Host;
if (browserHost is null)
{
return;
}
CefEventFlags modifiers = CefEventFlags.None;
if (CefNetApi.IsShiftRequired(c))
{
shiftKey = !shiftKey;
}
VirtualKeys key = CefNetApi.GetVirtualKey(c);
if (shiftKey)
{
modifiers |= CefEventFlags.ShiftDown;
}
if (altKey)
{
modifiers |= CefEventFlags.AltDown;
}
if (ctrlKey)
{
modifiers |= CefEventFlags.ControlDown;
}
if (metaKey)
{
modifiers |= CefEventFlags.CommandDown;
}
var k = new CefKeyEvent();
k.Type = eventType;
k.Modifiers = (uint)modifiers;
k.IsSystemKey = altKey;
k.WindowsKeyCode = (int)key;
k.NativeKeyCode = CefNetApi.GetNativeKeyCode(eventType, repeatCount, key, modifiers, extendedKey);
k.Character = c;
k.UnmodifiedCharacter = c;
this.BrowserObject?.Host?.SendKeyEvent(k);
}
private void SendKeyChange(CefKeyEventType eventType, VirtualKeys key, bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, int repeatCount, bool extendedKey)
{
if (key < VirtualKeys.None || key > VirtualKeys.OemClear)
{
throw new ArgumentOutOfRangeException(nameof(key));
}
CefBrowserHost browserHost = this.BrowserObject?.Host;
if (browserHost is null)
{
return;
}
CefEventFlags modifiers = CefEventFlags.None;
if (shiftKey)
{
modifiers |= CefEventFlags.ShiftDown;
}
if (altKey)
{
modifiers |= CefEventFlags.AltDown;
}
if (ctrlKey)
{
modifiers |= CefEventFlags.ControlDown;
}
if (metaKey)
{
modifiers |= CefEventFlags.CommandDown;
}
var k = new CefKeyEvent();
k.Type = eventType;
k.Modifiers = (uint)modifiers;
k.IsSystemKey = altKey;
k.WindowsKeyCode = (int)key;
k.NativeKeyCode = CefNetApi.GetNativeKeyCode(eventType, repeatCount, key, modifiers, extendedKey);
k.Character = (char)key;
k.UnmodifiedCharacter = (char)key;
this.BrowserObject?.Host?.SendKeyEvent(k);
}
/// <summary>
/// Translates a virtual key to the corresponding native key code for the current keyboard.
/// </summary>
/// <param name="isRepeat">The repeat flag.</param>
/// <param name="eventType">The key event type.</param>
/// <param name="modifiers">A bitwise combination of the <see cref="CefEventFlags"/> values.</param>
/// <param name="key">The virtual key.</param>
/// <param name="isExtended">The extended key flag.</param>
/// <returns>A native key code for the current keyboard.</returns>
public static int ToNativeKeyCode(this VirtualKeys key, CefKeyEventType eventType, bool isRepeat, CefEventFlags modifiers, bool isExtended)
{
return(CefNetApi.GetNativeKeyCode(eventType, isRepeat ? 1 : 0, key, modifiers, isExtended));
}
