On 2015-01-20 11:42 AM, Tomasz wrote:
You can do something similar to the beginning of mozilla::dom::CheckPermissions to get an nsPIDOMWindow*, and then call GetDocumentURI() on it.Thank you Ehsan. I tried to do that, but I did not afford to make that working. Probably, because I have totally no experience with Firefox code (actually, it is the first time I am looking at it) and I have no idea how the things are implemented there... So, in mozilla-central/dom/bindings/BindingUtils.cpp, there is a function: ----------------------------------------------------------------------- bool CheckPermissions(JSContext* aCx, JSObject* aObj, const char* const aPermissions[]) { JS::Rooted<JSObject*> rootedObj(aCx, aObj); nsPIDOMWindow* window = xpc::WindowGlobalOrNull(rootedObj); ----------------------------------------------------------------------- In every file generated by the Python script mozilla-central/dom/bindings/Codegen.py, the function headers are a little bit different, for example: ----------------------------------------------------------------------- set_border_spacing(JSContext* cx, JS::Handle<JSObject*> obj, nsDOMCSSDeclaration* self, JSJitSetterCallArgs args) ----------------------------------------------------------------------- It means that the second argument is JS::Handle<JSObject*> instead of JSObject* as in the previous case. I found that JS::Handle is just a const reference to JS::Rooted, so, if I understand correctly, I should just add the following line to mozilla-central/dom/bindings/Codegen.py: ----------------------------------------------------------------------- cgThings.append(CGGeneric('nsPIDOMWindow* cwindow = xpc::WindowGlobalOrNull(obj);\n')) ----------------------------------------------------------------------- However, when I do that, an error appears: ----------------------------------------------------------------------- error: cannot convert 'nsGlobalWindow*' to 'nsPIDOMWindow*' in initialization ----------------------------------------------------------------------- So, I tried to use nsGlobalWindow* instead of nsPIDOMWindow*: ----------------------------------------------------------------------- cgThings.append(CGGeneric('nsGlobalWindow* cwindow = xpc::WindowGlobalOrNull(obj);\n')) ----------------------------------------------------------------------- and I obtained no errors from the compiler (only warnings about the unused variable, which is normal). However, I am not able to do anything with this variable. If I try any of the following lines: ----------------------------------------------------------------------- cgThings.append(CGGeneric('nsIURI* oURI = cwindow->GetDocumentURI();\n')) cgThings.append(CGGeneric('nsPIDOMWindow* qwerty = cwindow->GetPrivateParent();\n')) ----------------------------------------------------------------------- I am obtaining 2 different errors: ----------------------------------------------------------------------- error: invalid use of incomplete type 'class nsGlobalWindow' nsIURI* oURI = cwindow->GetDocumentURI(); ../../dist/include/mozilla/dom/ScriptSettings.h:21:7: error: forward declaration of 'class nsGlobalWindow' class nsGlobalWindow ----------------------------------------------------------------------- Any idea what is the problem here?
You need to #include "nsGlobalWindow.h" in order to be able to use the type. Look for occurrences of CGHeaders in Codegen.py to see how to add a header #include statement to a generated bindings file.
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