//
// Summary:
// Open the response stream. - To handle the request immediately set handleRequest
// to true and return true. - To decide at a later time set handleRequest to false,
// return true, and execute callback to continue or cancel the request. - To cancel
// the request immediately set handleRequest to true and return false. This method
// will be called in sequence but not from a dedicated thread. For backwards compatibility
// set handleRequest to false and return false and the CefSharp.IResourceHandler.ProcessRequest(CefSharp.IRequest,CefSharp.ICallback)
// method will be called.
//
// Parameters:
// request:
// request
//
// handleRequest:
// see main summary
//
// callback:
// callback
//
// Returns:
// see main summary
public bool Open(IRequest request, out bool handleRequest, ICallback callback)
{
uri = new Uri(request.Url);
fileName = uri.AbsolutePath;
// if url is blocked
/*if (...request.Url....) {
*
* // cancel the request - set handleRequest to true and return false
* handleRequest = true;
* return false;
* }*/
// if url is browser file
if (uri.Host == "storage")
{
fileName = appPath + uri.Host + fileName;
if (File.Exists(fileName))
{
Task.Factory.StartNew(() => {
using (callback) {
FileStream fStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
mimeType = ResourceHandler.GetMimeType(Path.GetExtension(fileName));
stream = fStream;
callback.Continue();
}
});
// handle the request at a later time
handleRequest = false;
return(true);
}
}
// if url is request for icon of another file
if (uri.Host == "fileicon")
{
Task.Factory.StartNew(() => {
using (callback) {
stream = FileIconUtils.GetFileIcon(fileName, FileIconSize.Large);
mimeType = ResourceHandler.GetMimeType(".png");
callback.Continue();
}
});
// handle the request at a later time
handleRequest = false;
return(true);
}
// by default reject
callback.Dispose();
// cancel the request - set handleRequest to true and return false
handleRequest = true;
return(false);
}
//
// Summary:
// Begin processing the request.
//
// Parameters:
// request:
// The request object.
//
// callback:
// The callback used to Continue or Cancel the request (async).
//
// Returns:
// To handle the request return true and call CefSharp.ICallback.Continue()
// once the response header information is available CefSharp.ICallback.Continue()
// can also be called from inside this method if header information is available
// immediately). To cancel the request return false.
public bool ProcessRequest(IRequest request, ICallback callback)
{
uri = new Uri(request.Url);
fileName = uri.AbsolutePath;
// if url is blocked
/*if (!myForm.IsURLOk(request.Url)) {
*
* // return true so it does not open up
* return true;
* }*/
// if url is browser file
if (uri.Host == "storage")
{
fileName = appPath + uri.Host + fileName;
if (File.Exists(fileName))
{
Task.Factory.StartNew(() => {
using (callback) {
//var bytes = Encoding.UTF8.GetBytes(resource);
//stream = new MemoryStream(bytes);
FileStream fStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
mimeType = ResourceHandler.GetMimeType(Path.GetExtension(fileName));
stream = fStream;
callback.Continue();
}
});
return(true);
}
}
// if url is request for icon of another file
if (uri.Host == "fileicon")
{
Task.Factory.StartNew(() => {
using (callback) {
stream = FileIconUtils.GetFileIcon(fileName, FileIconSize.Large);
mimeType = ResourceHandler.GetMimeType(".png");
callback.Continue();
}
});
return(true);
}
// by default reject
callback.Dispose();
return(false);
}
// TOP LEVEL API
public static MemoryStream GetFileIcon(string name, FileIconSize size)
{
Icon icon = FileIconUtils.IconFromExtension(name.GetAfter("."), size);
using (icon) {
using (var bmp = icon.ToBitmap()) {
MemoryStream ms = new MemoryStream();
bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
ms.Seek(0, SeekOrigin.Begin);
return(ms);
}
}
}
