Use flags instead of multiple booleans in webview sample

No real changes, just avoid having to write "false, nullptr, true" in
the function call and use the much more clear "WebFrame::Private"
instead.

samples/webview/webview.cpp

@@ -112,7 +112,14 @@ private:
 class WebFrame : public wxFrame
 {
 public:
-    WebFrame(const wxString& url, bool isMain = true, wxWebViewWindowFeatures* windowFeatures = nullptr, bool isPrivate = false);
+    enum
+    {
+        Child   = 0,
+        Main    = 1,
+        Private = 2
+    };
+
+    WebFrame(const wxString& url, int flags = 0, wxWebViewWindowFeatures* windowFeatures = nullptr);
     virtual ~WebFrame();
 
     void UpdateState();
@@ -192,10 +199,18 @@ public:
     void OnEnableBrowserAcceleratorKeys(wxCommandEvent& evt);
 
 private:
+    // Return a special prefix for the "private" ("incognito") window titles.
+    wxString GetPrivatePrefix() const
+    {
+        wxString prefix;
+        if (m_flags & Private)
+            prefix = "[Private] ";
+        return prefix;
+    }
+
     wxTextCtrl* m_url;
     wxWebView* m_browser;
-    bool m_isMainFrame;
-    bool m_isPrivate;
+    int m_flags;
 
     wxToolBar* m_toolbar;
     wxToolBarToolBase* m_toolbar_back;
@@ -364,18 +379,16 @@ bool WebApp::OnInit()
 
     delete wxLog::SetActiveTarget(new DebugOnlyLog);
 
-    WebFrame *frame = new WebFrame(m_url);
+    WebFrame *frame = new WebFrame(m_url, WebFrame::Main);
     frame->Show();
 
     return true;
 }
 
-WebFrame::WebFrame(const wxString& url, bool isMain, wxWebViewWindowFeatures* windowFeatures, bool isPrivate):
-    wxFrame(nullptr, wxID_ANY, "wxWebView Sample")
+WebFrame::WebFrame(const wxString& url, int flags, wxWebViewWindowFeatures* windowFeatures) :
+    wxFrame(nullptr, wxID_ANY, "wxWebView Sample"),
+    m_flags(flags)
 {
-    m_isMainFrame = isMain;
-    m_isPrivate = isPrivate;
-
     // set the frame icon
     SetIcon(wxICON(sample));
     SetTitle("wxWebView Sample");
@@ -441,7 +454,7 @@ WebFrame::WebFrame(const wxString& url, bool isMain, wxWebViewWindowFeatures* wi
     topsizer->Add(m_info, wxSizerFlags().Expand());
 
     // Create a log window
-    if (m_isMainFrame)
+    if (m_flags & Main)
         new wxLogWindow(this, _("Logging"));
 
 #if wxUSE_WEBVIEW_EDGE
@@ -486,12 +499,12 @@ WebFrame::WebFrame(const wxString& url, bool isMain, wxWebViewWindowFeatures* wi
     if (!windowFeatures)
     {
         wxWebViewConfiguration conf = wxWebView::NewConfiguration(backend);
-        if (m_isPrivate)
+        if (m_flags & Private)
         {
             if (!conf.EnablePersistentStorage(false))
             {
-                wxMessageBox("Disabling persistent storage is not supported by this backend!", "Error", wxICON_ERROR | wxCENTER, this);
-                m_isPrivate = false;
+                wxLogWarning("Disabling persistent storage is not supported by this backend!");
+                m_flags ^= Private;
             }
         }
 
@@ -517,7 +530,7 @@ WebFrame::WebFrame(const wxString& url, bool isMain, wxWebViewWindowFeatures* wi
     }
 
 #ifdef __WXMAC__
-    if (m_isMainFrame)
+    if (m_flags & Main)
     {
         // With WKWebView handlers need to be registered before creation
         m_browser->RegisterHandler(wxSharedPtr<wxWebViewHandler>(new wxWebViewArchiveHandler("wxfs")));
@@ -532,7 +545,7 @@ WebFrame::WebFrame(const wxString& url, bool isMain, wxWebViewWindowFeatures* wi
 
     topsizer->Add(m_browser, wxSizerFlags().Expand().Proportion(1));
 
-    if (m_isMainFrame)
+    if (m_flags & Main)
     {
         // Log backend information
         wxLogMessage("Backend: %s Version: %s", m_browser->GetClassInfo()->GetClassName(),
@@ -809,10 +822,8 @@ void WebFrame::UpdateState()
         m_toolbar->EnableTool( m_toolbar_stop->GetId(), false );
     }
 
-    if (m_isPrivate)
-        SetTitle("[Private] " + m_browser->GetCurrentTitle());
-    else
-        SetTitle( m_browser->GetCurrentTitle() );
+    SetTitle(GetPrivatePrefix() + m_browser->GetCurrentTitle());
+
     m_url->SetValue( m_browser->GetCurrentURL() );
 }
 
@@ -1123,16 +1134,13 @@ void WebFrame::OnNewWindowFeatures(wxWebViewEvent &evt)
     wxLogMessage("Window features of child webview are available." + featureDescription);
 
     // Create child frame with the features specified by window.open() call
-    WebFrame* newFrame = new WebFrame(evt.GetURL(), false, features);
+    WebFrame* newFrame = new WebFrame(evt.GetURL(), WebFrame::Child, features);
     newFrame->Show();
 }
 
 void WebFrame::OnTitleChanged(wxWebViewEvent& evt)
 {
-    if (m_isPrivate)
-        SetTitle("[Private] " + evt.GetString());
-    else
-        SetTitle(evt.GetString());
+    SetTitle(GetPrivatePrefix() + evt.GetString());
     wxLogMessage("%s", "Title changed; title='" + evt.GetString() + "'");
 }
 
@@ -1158,7 +1166,7 @@ void WebFrame::OnScriptResult(wxWebViewEvent& evt)
 void WebFrame::OnWindowCloseRequested(wxWebViewEvent& WXUNUSED(evt))
 {
     wxLogMessage("Window close requested");
-    if (!m_isMainFrame)
+    if (!(m_flags & Main))
         Close();
 }
 
@@ -1574,7 +1582,7 @@ void WebFrame::OnPrint(wxCommandEvent& WXUNUSED(evt))
 
 void WebFrame::OnOpenPrivateWindow(wxCommandEvent& WXUNUSED(evt))
 {
-    WebFrame* newFrame = new WebFrame(m_browser->GetCurrentURL(), false, nullptr, true);
+    WebFrame* newFrame = new WebFrame(m_browser->GetCurrentURL(), WebFrame::Private);
     newFrame->Show();
 }