Add support for registerProtocolHandler

Extend initialization of URLRequestContextGetterQt to create a
content::ProtocolHandlerRegistry for each content::BrowserContext and add the
registry's URL request interceptor to the front of the interceptor chain.

Implement methods in WebContentsDelegateQt to add/remove protocol handlers
to/from the ProtocolHandlerRegistry.

Add permission request signal and classes for core, quick and widgets.

Add widgets autotest.

Add signal handlers to quicknanobrowser and simplebrowser.

Task-number: QTBUG-62783
Change-Id: I808e7eb9a1cb4d7216686deed4895de14fe46310
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

1 files changed, 20 insertions, 0 deletions

diff --git a/src/webenginewidgets/api/qwebenginepage.cpp b/src/webenginewidgets/api/qwebenginepage.cpp
index 67d55b20f..ec35ea6ce 100644
--- a/src/webenginewidgets/api/qwebenginepage.cpp
+++ b/src/webenginewidgets/api/qwebenginepage.cpp
@@ -54,6 +54,7 @@
 #include "qwebengineprofile.h"
 #include "qwebengineprofile_p.h"
 #include "qwebenginequotapermissionrequest.h"
+#include "qwebengineregisterprotocolhandlerpermissionrequest.h"
 #include "qwebenginescriptcollection_p.h"
 #include "qwebenginesettings.h"
 #include "qwebengineview.h"
@@ -578,6 +579,13 @@ void QWebEnginePagePrivate::runQuotaPermissionRequest(QSharedPointer<QtWebEngine
     Q_EMIT q->quotaPermissionRequested(request);
 }
 
+void QWebEnginePagePrivate::runRegisterProtocolHandlerPermissionRequest(QSharedPointer<RegisterProtocolHandlerPermissionController> controller)
+{
+    Q_Q(QWebEnginePage);
+    QWebEngineRegisterProtocolHandlerPermissionRequest request(std::move(controller));
+    Q_EMIT q->registerProtocolHandlerPermissionRequested(request);
+}
+
 QObject *QWebEnginePagePrivate::accessibilityParentObject()
 {
     return view;
@@ -750,6 +758,18 @@ QWebEnginePage::QWebEnginePage(QObject* parent)
 */
 
 /*!
+    \fn QWebEnginePage::registerProtocolHandlerPermissionRequested(QWebEngineRegisterProtocolHandlerPermissionRequest request)
+    \since 5.11
+
+    This signal is emitted when the web page tries to register a custom protocol
+    using the \l registerProtocolHandler API.
+
+    The request object \a request can be used to accept or reject the request:
+
+    \snippet webenginewidgets/simplebrowser/webpage.cpp registerProtocolHandlerPermissionRequested
+*/
+
+/*!
     \fn void QWebEnginePage::pdfPrintingFinished(const QString &filePath, bool success)
     \since 5.9