/// <summary>
/// process meassage and handles if for
/// .NET controls and its children
/// </summary>
/// <param name="m"></param>
/// <param name="mapData"></param>
/// <param name="ancestorControl"></param>
/// <param name="control"></param>
/// <returns></returns>
private static PreProcessControlState ProcessAndHandleDotNetControlMessage(Message m, MapData mapData, Control ancestorControl, Control control)
{
MgPanel navigationKeyDialogPanel = null;
if (IsTabbingMessage(m))
{
navigationKeyDialogPanel = GuiUtils.getContainerPanel(control) as MgPanel;
}
if (navigationKeyDialogPanel != null)
{
//install DialogKeyReceived key handler on the parent panel
//this will be our indication if we need to handle the message
navigationKeyDialogPanel.DialogKeyReceived += new EventHandler(panel_DialogKeyReceived);
}
keyShouldBeHandledByMagic = false;
PreProcessControlState state = control.PreProcessControlMessage(ref m); //first let control process the message
if (navigationKeyDialogPanel != null)
{
navigationKeyDialogPanel.DialogKeyReceived -= new EventHandler(panel_DialogKeyReceived);
}
handleMessage(m, mapData, control, state); //then handle it in magic
return(state);
}
/// <inheritdoc/>>
public bool OnPreKeyEvent(IWebBrowser browserControl, IBrowser browser, KeyType type, int windowsKeyCode, int nativeKeyCode, CefEventFlags modifiers, bool isSystemKey, ref bool isKeyboardShortcut)
{
const int WM_SYSKEYDOWN = 0x104;
const int WM_KEYDOWN = 0x100;
const int WM_KEYUP = 0x101;
const int WM_SYSKEYUP = 0x105;
const int WM_CHAR = 0x102;
const int WM_SYSCHAR = 0x106;
const int VK_TAB = 0x9;
bool result = false;
isKeyboardShortcut = false;
// Don't deal with TABs by default:
// TODO: Are there any additional ones we need to be careful of?
// i.e. Escape, Return, etc...?
if (windowsKeyCode == VK_TAB)
{
return(result);
}
Control control = browserControl as Control;
int msgType = 0;
switch (type)
{
case KeyType.RawKeyDown:
if (isSystemKey)
{
msgType = WM_SYSKEYDOWN;
}
else
{
msgType = WM_KEYDOWN;
}
break;
case KeyType.KeyUp:
if (isSystemKey)
{
msgType = WM_SYSKEYUP;
}
else
{
msgType = WM_KEYUP;
}
break;
case KeyType.Char:
if (isSystemKey)
{
msgType = WM_SYSCHAR;
}
else
{
msgType = WM_CHAR;
}
break;
default:
Trace.Assert(false);
break;
}
// We have to adapt from CEF's UI thread message loop to our fronting WinForm control here.
// So, we have to make some calls that Application.Run usually ends up handling for us:
PreProcessControlState state = PreProcessControlState.MessageNotNeeded;
// We can't use BeginInvoke here, because we need the results for the return value
// and isKeyboardShortcut. In theory this shouldn't deadlock, because
// atm this is the only synchronous operation between the two threads.
control.Invoke(new Action(() =>
{
Message msg = new Message()
{
HWnd = control.Handle, Msg = msgType, WParam = new IntPtr(windowsKeyCode), LParam = new IntPtr(nativeKeyCode)
};
// First comes Application.AddMessageFilter related processing:
// 99.9% of the time in WinForms this doesn't do anything interesting.
bool processed = Application.FilterMessage(ref msg);
if (processed)
{
state = PreProcessControlState.MessageProcessed;
}
else
{
// Next we see if our control (or one of its parents)
// wants first crack at the message via several possible Control methods.
// This includes things like Mnemonics/Accelerators/Menu Shortcuts/etc...
state = control.PreProcessControlMessage(ref msg);
}
}));
if (state == PreProcessControlState.MessageNeeded)
{
// TODO: Determine how to track MessageNeeded for OnKeyEvent.
isKeyboardShortcut = true;
}
else if (state == PreProcessControlState.MessageProcessed)
{
// Most of the interesting cases get processed by PreProcessControlMessage.
result = true;
}
Debug.WriteLine(String.Format("OnPreKeyEvent: KeyType: {0} 0x{1:X} Modifiers: {2}", type, windowsKeyCode, modifiers));
Debug.WriteLine(String.Format("OnPreKeyEvent PreProcessControlState: {0}", state));
return(result);
}
/// <summary>
/// handle message of child of .NET control
/// create event according to message and handle it in usual manner
/// </summary>
/// <param name = "m"> message </param>
/// <param name = "mapData"> map data of .NET control</param>
/// <param name = "control">control which receive message - the child of .NET control</param>
/// <param name="state"></param>
private static void handleMessage(Message m, MapData mapData, Control control, PreProcessControlState state)
{
EventArgs e = null;
HandlerBase.EventType eventType = HandlerBase.EventType.NONE;
switch (m.Msg)
{
case NativeWindowCommon.WM_LBUTTONDOWN:
e = createLeftMouseEventArgs(1, (int)m.LParam);
eventType = HandlerBase.EventType.MOUSE_DOWN;
break;
case NativeWindowCommon.WM_LBUTTONUP:
e = createLeftMouseEventArgs(1, (int)m.LParam);
eventType = HandlerBase.EventType.MOUSE_UP;
break;
case NativeWindowCommon.WM_LBUTTONDBLCLK:
e = createLeftMouseEventArgs(2, (int)m.LParam);
eventType = HandlerBase.EventType.MOUSE_DBLCLICK;
break;
case NativeWindowCommon.WM_MOUSEMOVE:
e = createLeftMouseEventArgs(1, (int)m.LParam);
eventType = HandlerBase.EventType.MOUSE_MOVE;
break;
case NativeWindowCommon.WM_KEYDOWN:
eventType = HandlerBase.EventType.KEY_DOWN;
Keys keyCode = GetKeyCode(m);
e = new KeyEventArgs(keyCode);
DotNetHandler.getInstance().handleEvent("KeyDown", control, e, mapData);
// we use preProcessResult only for navigation keys
// if control returns preProcessResult = false for a navigation key then we do not
// interfere because the control already handled the navigation internally.
if (state == PreProcessControlState.MessageNeeded)
{
foreach (var item in _navigationKeys)
{
if (keyCode == item)
{
return;
}
}
}
if (keyCode == Keys.Tab && !keyShouldBeHandledByMagic) //QCR #728708
//special handling for a tab key, in future may be extended for othe keys as weel.
{
return;
}
break;
default:
Debug.Assert(false);
break;
}
DefaultHandler.getInstance().handleEvent(eventType, control, e, mapData);
}
/// <summary>
/// process message
/// find out if the message is from child of the .NET control and process it
/// </summary>
/// <param name = "m"></param>
/// <returns></returns>
private static bool handleChildrenOfDotNetControls(Message m)
{
PreProcessControlState state = PreProcessControlState.MessageNotNeeded;
ControlsMap controlsMap = ControlsMap.getInstance();
MapData mapData;
switch (m.Msg)
{
//this are common messages that we want to handle for children of .NET controls
case NativeWindowCommon.WM_MOUSEMOVE:
case NativeWindowCommon.WM_LBUTTONDOWN:
case NativeWindowCommon.WM_LBUTTONUP:
case NativeWindowCommon.WM_LBUTTONDBLCLK:
case NativeWindowCommon.WM_KEYDOWN:
Control c, control = c = Control.FromChildHandle(m.HWnd);
if (c != null)
{
mapData = controlsMap.getControlMapData(c);
if (mapData != null) //this is a magic control
{
//this is a .NET control on magic
if (isDotNetControl(mapData) && m.Msg == NativeWindowCommon.WM_KEYDOWN)
{
state = ProcessAndHandleDotNetControlMessage(m, mapData, control, control); //then handle it in magic
}
else
{
return(false);
}
}
else //look for magic parent of the control
{
while (c.Parent != null)
{
c = c.Parent;
mapData = controlsMap.getControlMapData(c);
if (mapData != null)
{
if (isDotNetControl(mapData))
{
//FOUND! This is a child of .NET control
state = ProcessAndHandleDotNetControlMessage(m, mapData, c, control);
}
break;
}
}
}
}
break;
case NativeWindowCommon.WM_KEYUP:
{
// Handled here because while moving between windows of windowlist using keyboard (ie. Ctrl+Tab+Tab+,...),
// the list should not be sorted until we release key associated with Next/Previous window Action.
Control ctrl = Control.FromHandle(m.HWnd);
if (ctrl != null)
{
Form form = GuiUtils.FindForm(ctrl);
if (form != null && ControlsMap.isMagicWidget(form))
{
// Each form has a panel and panel contains all controls.
mapData = controlsMap.getControlMapData(((TagData)form.Tag).ClientPanel);
if (mapData != null)
{
Events.HandleKeyUpMessage(mapData.getForm(), (int)m.WParam);
}
}
}
}
break;
}
return(state == PreProcessControlState.MessageProcessed);
}