As you've discovered, there's a lot of magic and boilerpate that's easy to get wrong. You can find some simple test XPCOM components in js/xpconnect/components. Try grabbing one of those, making sure that it works, and then iterating on it to turn it into what you need.
bholley On Wed, Oct 16, 2013 at 10:16 AM, Vasu Yadav <vasuyadavkri...@gmail.com> wrote: > On Friday, October 4, 2013 6:16:36 PM UTC+5:30, Bobby Holley wrote: >> On Fri, Oct 4, 2013 at 2:36 PM, <vasuyadavkri...@gmail.com> wrote: >> >> >> >> > Based on my understanding, I need to create a JS XPCOM component apart >> >> > from the existing C++ XPCOM component I already have. All the JavaScript >> >> > function calls need to be made from JS XPCOM component. >> >> > >> >> >> >> Precisely. >> >> >> >> >> >> > How will the C++ XPCOM and JS XPCOM communicate to each other? Can we >> >> > instantiate JS XPCOM component from C++ XPCOM Component? >> >> > >> >> >> >> Yes. The great the about XPCOM components is that they can be instantiated >> >> and manipulated in either C++ or JS - the language of the implementation >> >> doesn't matter. >> >> >> >> > >> >> > I want to deliver only one .xpi to my customers. I hope it is possible to >> >> > package both C++ XPCOM and JS XPCOM components in the same .xpi file. >> >> > Please let me know if this is possible and whether you see any problems in >> >> > this approach. >> >> > >> >> >> >> Yep, that should work just fine. >> >> >> >> Here are some links that might be useful: >> >> >> >> https://developer.mozilla.org/en/docs/How_to_Build_an_XPCOM_Component_in_Javascript >> >> http://kb.mozillazine.org/Implementing_XPCOM_components_in_JavaScript >> >> >> >> bholley > > Sorry for troubling you again. > > I am trying to create one sample JavaScript XPCOM component.But not able to > instantiate JavaScript XPCOM component from C++ code. > > Steps to create JavaScript XPCOM component- > 1) Create nsIHelloWorld.idl file for nsIHelloWorld interface. > 2) Create nsIHelloWorld.js file > 3) Generating .xpt and header file using Python22.0. > 4) Instantiate JavaScript XPCOM component from C++ code. > > Code- > nsIHelloWorld.idl > ---------------------------------------------------------- > #include "nsISupports.idl" > [scriptable, uuid(8e001740-322b-11e3-aa6e-0800200c9a66)] > interface nsIHelloWorld : nsISupports > { > string Hellovasu(); > }; > ---------------------------------------------------------- > > nsIHelloWorld.js > ----------------------------------------------------------------------------------------------------- > Components.utils.import("resource://gre/modules/XPCOMUtils.jsm"); > function HelloWorld() > { > } > HelloWorld.prototype = { > classDescription: "My Hello World Javascript XPCOM Component", > classID: Components.ID("{031572f4-3629-11e3-98fd-ce3f5508acd9}"), > contractID: "@keynote.com/firefox/helloworld;1", > QueryInterface: > XPCOMUtils.generateQI([Components.interfaces.nsIHelloWorld]), > > Hellovasu: function() { > return "Hello World!"; > } > }; > var components = [HelloWorld]; > if (XPCOMUtils.generateNSGetFactory) > this.NSGetFactory = XPCOMUtils.generateNSGetFactory([components]); // > Firefox 4.0 and higher > else > var NSGetModule = XPCOMUtils.generateNSGetModule([components]); // > Firefox 3.x > ---------------------------------------------------------------------------------------------------- > > chrome.manifest > ---------------------------------------------------------------------------------- > interfaces components/nsIHelloWorld.xpt > component 031572f4-3629-11e3-98fd-ce3f5508acd9 nsIHelloWorld.js > contract @keynote.com/firefox/helloworld;1 > {031572f4-3629-11e3-98fd-ce3f5508acd9} > application={ec8030f7-c20a-464f-9b0e-13a3a9e97384} > ----------------------------------------------------------------------------------- > > Instantiate JavaScript XPCOM compnent from C++ code > ----------------------------------------------------------------------------------------------- > #include "nsComponentManagerUtils.h" > #include "nsIHelloWorld.h" > > nsCOMPtr<nsISupports> iSupports = > do_CreateInstance("@keynote.com/Firefox/helloworld;1",&rv1); > or > nsCOMPtr<nsIHelloWorld> ihello = > do_CreateInstance("@keynote.com/Firefox/helloworld;1",&rv1); > > Not able to instantiate helloworld component. > ----------------------------------------------------------------------------------------------- > Logs value for IHello and rv1 in hexa formet- IHello=0 rv1=80040154 > > Do you fell anything missing or wrong in this code? If you have any better > approach or solution please suggest me. I am completely stuck here. > > Regards > Vasu > > _______________________________________________ > dev-platform mailing list > dev-platform@lists.mozilla.org > https://lists.mozilla.org/listinfo/dev-platform _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
