On Wed, Jul 30, 2014 at 8:56 AM, Shanmugham Sundaram <shansyman...@gmail.com
> wrote:
> 1 - My IDL is as follows
> #include "nsISupports.idl"
> [scriptable, uuid(f22e7808-17a7-11e4-9620-58fc1d5d46b0)]
> interface nsIJSSupport: nsISupports
> {
> boolean doSomething(in string frameId, in string
> siteId,in bool bPage, in bool bIsGreater);
> };
>
>
> 2 - My JS file is as follows
>
>
> Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
>
> function MyComponent() { }
>
> MyComponent.prototype = {
> classDescription: "Shans Javascript XPCOM Component",
> classID:
> Components.ID("{17ca79ee-17ae-11e4-a5ea-fa011e5d46b0}"),
> contractID: "@Shans.com/jssource;1",
> QueryInterface:
> XPCOMUtils.generateQI([Components.interfaces.nsIJSSupport,Components.interfaces.nsISupports]),
>
> doSomething: function(frameId, siteId, bPage, bIsGreater) {
> //Get the proper window and
> get the call to sb_MyComponent
> //assuming the following will
> call the "sb_MyComponent"
>
> win.wrappedJSObject.injectedFunctioninWebPage(frameId, siteId, bPage,
> bIsGreater);
> }
> }
>
> var components = [MyComponent];
>
> if ("generateNSGetFactory" in XPCOMUtils)
> var NSGetFactory =
> XPCOMUtils.generateNSGetFactory(components);
> else
> var NSGetModule =
> XPCOMUtils.generateNSGetModule(components);
>
>
>
> 3 - My C++ XP-COM code (skeleton) to make JS-XPCOM call as below :
>
> nsresult rv;
> nsCOMPtr<nsIDOMWindow> aDOMWindow( do_GetInterface(
> aWebProgress, &rv ) );
> nsCOMPtr< nsPIDOMWindow > privateWindow( do_QueryInterface(
> aDOMWindow, &rv ) );
> nsCOMPtr< nsIDocShell > docShell =
> privateWindow->GetDocShell();
> nsCOMPtr<nsIJSSupport> iJSSupport =
> do_CreateInstance("@Shans.com/jssource;1",&rv);
> if(NS_SUCCEEDED(rv) && iJSSupport)
> {
> iJSSupport-> doSomething (frameId, siteId,
> bPage, bIsGreater)
> }
>
>
> Is it possible to call the "injectedFunctioninWebPage()" by using
> win.wrappedJSObject ? If not, how to call the JS functions in the page by
> using JS-XPCOM?
>
Yes. You might consider passing aDOMWindow directly through the IDL since
you already have it in C++, rather than using the frameId.
bholley
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