Add Setting to allow passing unknown URL schemes to QDesktopServices

A new enum UnknownUrlSchemePolicy was added to WebEngineSettings,
QWebEngineSettings and QQuickWebEngineSettings.
WebContentsDelegate now has a new attribute of that type, which can
be read and written through the public APIs
Q(Quick)WebEngineSettings::unknownUrlSchemeNavigationPolicy and
Q(Quick)WebEngineSettings::setUnknownUrlSchemeNavigationPolicy.

This way, one can control, whether URLs with unknown schemes are passed
to QDesktopServices. WebContentsAdapterClient::navigationRequested is
called on these requests, so this allows more fine-grained control
over the schemes and origins, that are allowed.

Task-number: QTBUG-58627
Change-Id: Ie81d9503456d63ea1ed5606483254acf437cd8f7
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/core/web_engine_settings.h b/src/core/web_engine_settings.h
index 639d314f3..d4c5e02a8 100644
--- a/src/core/web_engine_settings.h
+++ b/src/core/web_engine_settings.h
@@ -107,6 +107,14 @@ public:
         DefaultFixedFontSize
     };
 
+    // Must match the values from the public API in qwebenginesettings.h.
+    enum UnknownUrlSchemePolicy {
+        InheritedUnknownUrlSchemePolicy = 0,
+        DisallowUnknownUrlSchemes = 1,
+        AllowUnknownUrlSchemesFromUserInteraction,
+        AllowAllUnknownUrlSchemes
+    };
+
     explicit WebEngineSettings(WebEngineSettings *parentSettings = 0);
     ~WebEngineSettings();
 
@@ -129,6 +137,9 @@ public:
     void setDefaultTextEncoding(const QString &encoding);
     QString defaultTextEncoding() const;
 
+    void setUnknownUrlSchemePolicy(UnknownUrlSchemePolicy policy);
+    UnknownUrlSchemePolicy unknownUrlSchemePolicy() const;
+
     void initDefaults();
     void scheduleApply();
 
@@ -155,6 +166,7 @@ private:
     static QHash<Attribute, bool> s_defaultAttributes;
     static QHash<FontFamily, QString> s_defaultFontFamilies;
     static QHash<FontSize, int> s_defaultFontSizes;
+    UnknownUrlSchemePolicy m_unknownUrlSchemePolicy;
 
     friend class BatchTimer;
     friend class WebContentsAdapter;