UWP: allow servo's initial URL to be set before Servo starts

support/hololens/ServoApp/DefaultUrl.h

@@ -4,5 +4,5 @@
 
 // For development purpose.
 // Will override DEFAULT_URL_PROD or any locally stored preferences.
-// #define OVERRIDE_DEFAULT_URL "data:text/html,<input>"
-// #define OVERRIDE_DEFAULT_URL "http://localhost:8000/test.html"
+// #define OVERRIDE_DEFAULT_URL L"data:text/html,<input>"
+// #define OVERRIDE_DEFAULT_URL L"http://localhost:8000/test.html"

support/hololens/ServoApp/ServoControl/Servo.cpp

@@ -134,8 +134,8 @@ const char *prompt_input(const char *message, const char *default,
   }
 }
 
-Servo::Servo(hstring args, GLsizei width, GLsizei height,
-             EGLNativeWindowType eglNativeWindow, float dpi,
+Servo::Servo(std::optional<hstring> initUrl, hstring args, GLsizei width,
+             GLsizei height, EGLNativeWindowType eglNativeWindow, float dpi,
              ServoDelegate &aDelegate)
     : mWindowHeight(height), mWindowWidth(width), mDelegate(aDelegate) {
   ApplicationDataContainer localSettings =
@@ -172,13 +172,22 @@ Servo::Servo(hstring args, GLsizei width, GLsizei height,
       auto val = unbox_value<bool>(value);
       cpref.value = &val;
     } else if (type == Windows::Foundation::PropertyType::String) {
-      cpref.pref_type = capi::CPrefType::Str;
-      cpref.value = *hstring2char(unbox_value<hstring>(value));
-#ifdef OVERRIDE_DEFAULT_URL
+      hstring strValue;
       if (pref.Key() == L"shell.homepage") {
-        cpref.value = OVERRIDE_DEFAULT_URL;
-      }
+        if (initUrl.has_value()) {
+          strValue = *initUrl;
+        } else {
+#ifdef OVERRIDE_DEFAULT_URL
+          strValue = OVERRIDE_DEFAULT_URL;
+#else
+          strValue = unbox_value<hstring>(value);
 #endif
+        }
+      } else {
+        strValue = unbox_value<hstring>(value);
+      }
+      cpref.pref_type = capi::CPrefType::Str;
+      cpref.value = *hstring2char(strValue);
     } else if (type == Windows::Foundation::PropertyType::Int64) {
       cpref.pref_type = capi::CPrefType::Int;
       auto val = unbox_value<int64_t>(value);
@@ -200,7 +209,7 @@ Servo::Servo(hstring args, GLsizei width, GLsizei height,
 
   capi::CInitOptions o;
   o.prefs = &prefsList;
-  o.args = *hstring2char(args + L"--devtools");
+  o.args = *hstring2char(args + L" --devtools");
   o.width = mWindowWidth;
   o.height = mWindowHeight;
   o.density = dpi;

support/hololens/ServoApp/ServoControl/Servo.h

@@ -26,7 +26,8 @@ class ServoDelegate;
 
 class Servo {
 public:
-  Servo(hstring, GLsizei, GLsizei, EGLNativeWindowType, float, ServoDelegate &);
+  Servo(std::optional<hstring>, hstring, GLsizei, GLsizei, EGLNativeWindowType,
+        float, ServoDelegate &);
   ~Servo();
   ServoDelegate &Delegate() { return mDelegate; }
 

support/hololens/ServoApp/ServoControl/ServoControl.cpp

@@ -379,6 +379,8 @@ void ServoControl::TryLoadUri(hstring input) {
         });
       }
     });
+  } else {
+    mInitUrl = input;
   }
 }
 
@@ -398,8 +400,8 @@ void ServoControl::Loop() {
     log(L"Entering loop");
     ServoDelegate *sd = static_cast<ServoDelegate *>(this);
     EGLNativeWindowType win = GetNativeWindow();
-    mServo = std::make_unique<Servo>(mArgs, mPanelWidth, mPanelHeight, win,
-                                     mDPI, *sd);
+    mServo = std::make_unique<Servo>(mInitUrl, mArgs, mPanelWidth, mPanelHeight,
+                                     win, mDPI, *sd);
   } else {
     // FIXME: this will fail since create_task didn't pick the thread
     // where Servo was running initially.

support/hololens/ServoApp/ServoControl/ServoControl.h

@@ -217,6 +217,7 @@ struct ServoControl : ServoControlT<ServoControl>, public servo::ServoDelegate {
   float mDPI = 1;
   hstring mCurrentUrl = L"";
   bool mTransient = false;
+  std::optional<hstring> mInitUrl = {};
 
   Windows::UI::Xaml::Controls::SwapChainPanel ServoControl::Panel();
   void CreateNativeWindow();