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cefsharp / CefSharp UNCLAIMED

.NET (WPF and Windows Forms) bindings for the Chromium Embedded Framework

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Maintenance - Fixed formatting, file encoding, and copyright year (#2504) * Applied formatting * Fixed file encoding + Updated copyright year * Updated License * Fixed more file encoding * Copyright notice now shows the year the file was created
2018-09-10 02:41:13 +02:00
using System;
Add example Ctrl-T menu handler that gets invoked when you have focus inside browser.
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using System.Diagnostics;
using System.Windows.Forms;
Move handlers to their own namespace and create an implementation of LifeSpanHandler to deal with custom popups
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namespace CefSharp.WinForms.Example.Handlers
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{
public class KeyboardHandler : IKeyboardHandler
{
/// <inheritdoc/>>
Code cleanup - Rename IWebBrowser browserControl to chromiumWebBrowser Hopefully this makes it clearer that the IWebBrowser instance is actually the ChromiumWebBrowser Updated almost all instances, there's one WinForms example that wasn't updated
2019-07-20 16:26:25 +10:00
public bool OnPreKeyEvent(IWebBrowser chromiumWebBrowser, IBrowser browser, KeyType type, int windowsKeyCode, int nativeKeyCode, CefEventFlags modifiers, bool isSystemKey, ref bool isKeyboardShortcut)
Add example Ctrl-T menu handler that gets invoked when you have focus inside browser.
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{
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;
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const int VK_LEFT = 0x25;
const int VK_UP = 0x26;
const int VK_RIGHT = 0x27;
const int VK_DOWN = 0x28;
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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...?
Update KeyboardHandler to ignore left, right, up, down as they were being cancelled Some resharper inspired cleanup as well
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if (windowsKeyCode == VK_TAB || windowsKeyCode == VK_LEFT || windowsKeyCode == VK_UP || windowsKeyCode == VK_DOWN || windowsKeyCode == VK_RIGHT)
Add example Ctrl-T menu handler that gets invoked when you have focus inside browser.
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{
Update KeyboardHandler to ignore left, right, up, down as they were being cancelled Some resharper inspired cleanup as well
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return false;
Add example Ctrl-T menu handler that gets invoked when you have focus inside browser.
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}
Update KeyboardHandler to ignore left, right, up, down as they were being cancelled Some resharper inspired cleanup as well
2016-04-21 07:03:19 +10:00
var result = false;
Code cleanup - Rename IWebBrowser browserControl to chromiumWebBrowser Hopefully this makes it clearer that the IWebBrowser instance is actually the ChromiumWebBrowser Updated almost all instances, there's one WinForms example that wasn't updated
2019-07-20 16:26:25 +10:00
var control = chromiumWebBrowser as Control;
Update KeyboardHandler to ignore left, right, up, down as they were being cancelled Some resharper inspired cleanup as well
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var msgType = 0;
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switch (type)
{
Maintenance - Fixed formatting, file encoding, and copyright year (#2504) * Applied formatting * Fixed file encoding + Updated copyright year * Updated License * Fixed more file encoding * Copyright notice now shows the year the file was created
2018-09-10 02:41:13 +02:00
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;
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}
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// 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:
Update KeyboardHandler to ignore left, right, up, down as they were being cancelled Some resharper inspired cleanup as well
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var state = PreProcessControlState.MessageNotNeeded;
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// We can't use BeginInvoke here, because we need the results for the return value
KeyboardHandler is WinForms specific.
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// and isKeyboardShortcut. In theory this shouldn't deadlock, because
// atm this is the only synchronous operation between the two threads.
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control.Invoke(new Action(() =>
{
Update KeyboardHandler to ignore left, right, up, down as they were being cancelled Some resharper inspired cleanup as well
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var msg = new Message
{
HWnd = control.Handle,
Msg = msgType,
WParam = new IntPtr(windowsKeyCode),
LParam = new IntPtr(nativeKeyCode)
};
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// First comes Application.AddMessageFilter related processing:
// 99.9% of the time in WinForms this doesn't do anything interesting.
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var processed = Application.FilterMessage(ref msg);
Add example Ctrl-T menu handler that gets invoked when you have focus inside browser.
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if (processed)
{
state = PreProcessControlState.MessageProcessed;
}
else
{
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// 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...
Add example Ctrl-T menu handler that gets invoked when you have focus inside browser.
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state = control.PreProcessControlMessage(ref msg);
}
}));
Update KeyboardHandler to ignore left, right, up, down as they were being cancelled Some resharper inspired cleanup as well
2016-04-21 07:03:19 +10:00
Add example Ctrl-T menu handler that gets invoked when you have focus inside browser.
2015-06-09 23:29:09 -04:00
if (state == PreProcessControlState.MessageNeeded)
{
// TODO: Determine how to track MessageNeeded for OnKeyEvent.
isKeyboardShortcut = true;
}
else if (state == PreProcessControlState.MessageProcessed)
{
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// Most of the interesting cases get processed by PreProcessControlMessage.
Add example Ctrl-T menu handler that gets invoked when you have focus inside browser.
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result = true;
}
Update KeyboardHandler to ignore left, right, up, down as they were being cancelled Some resharper inspired cleanup as well
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Debug.WriteLine("OnPreKeyEvent: KeyType: {0} 0x{1:X} Modifiers: {2}", type, windowsKeyCode, modifiers);
Debug.WriteLine("OnPreKeyEvent PreProcessControlState: {0}", state);
Add example Ctrl-T menu handler that gets invoked when you have focus inside browser.
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return result;
}
/// <inheritdoc/>>
Code cleanup - Rename IWebBrowser browserControl to chromiumWebBrowser Hopefully this makes it clearer that the IWebBrowser instance is actually the ChromiumWebBrowser Updated almost all instances, there's one WinForms example that wasn't updated
2019-07-20 16:26:25 +10:00
public bool OnKeyEvent(IWebBrowser chromiumWebBrowser, IBrowser browser, KeyType type, int windowsKeyCode, int nativeKeyCode, CefEventFlags modifiers, bool isSystemKey)
Add example Ctrl-T menu handler that gets invoked when you have focus inside browser.
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{
Update KeyboardHandler to ignore left, right, up, down as they were being cancelled Some resharper inspired cleanup as well
2016-04-21 07:03:19 +10:00
var result = false;
Debug.WriteLine("OnKeyEvent: KeyType: {0} 0x{1:X} Modifiers: {2}", type, windowsKeyCode, modifiers);
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// TODO: Handle MessageNeeded cases here somehow.
Add example Ctrl-T menu handler that gets invoked when you have focus inside browser.
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return result;
}
}
}
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