Hi,
I've to call injected javascript function in a web page by using JS-XPCOM from
my C++ XPCOM. Following are the skeleton of my work..
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?
Thanks in Advance,
Shan'
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