[Interest] [Qtwebengine] Inject QWebChannel and/or JQuery into QWebEnginePage

[Aleksey Yermakov]

Hi,

You don't have to inject QWebChannel.js every time if you use
QWebEngineScriptCollection in your QWebEngineProfile. Here is a sample code
from my project:

const char s_qWebChannelAdditionalScript[] = "new
QWebChannel(qt.webChannelTransport, function(channel) {"
                                             "  window.exported_object =
channel.objects.exported_object;"
                                             "});";

QWebEngineProfile *WebEngineView::prepareProfile()
{
    QWebEngineProfile *profile = new QWebEngineProfile("Profile", this);

    ...

    // Preparing qwebchannel.js for injection
    QFile qWebChannelJsFile(":/qtwebchannel/qwebchannel.js");

    if(! qWebChannelJsFile.open(QIODevice::ReadOnly)) {
        MY_ERROR("Failed to load qwebchannel.js with error: " +
qWebChannelJsFile.errorString());
    } else {
        QByteArray qWebChannelJs = qWebChannelJsFile.readAll();

        qWebChannelJs.append(QString(s_qWebChannelAdditionalScript));

        QWebEngineScript script;

        script.setSourceCode(qWebChannelJs);
        script.setName("qwebchannel.js");
        script.setWorldId(QWebEngineScript::MainWorld);
        script.setInjectionPoint(QWebEngineScript::DocumentCreation);
        script.setRunsOnSubFrames(false);

        profile->scripts()->insert(script);
    }

    return profile;
}

Don't forget to create your QWebEnginePage with this profile instead of
default one.

Cheers,
Aleksey

On Sun, Mar 20, 2016 at 9:30 PM, NoRulez <norulez at me.com> wrote:

> Hello,
>
> Did I have to inject QWebChannel and for example JQuery every time before
> or after I call setUrl()/load() to QWebEngineView or only once?
>
> Because the jquery event for loading a site is only called once and if
> loaded then it has the previous url:
>
> $(window).load(function () {
>     alert('page is loaded');
>     alert(window.location.href);
> });
>
> Thanks in advance
>
> Best Regards
>
> _______________________________________________
> QtWebEngine mailing list
> QtWebEngine at qt-project.org
> http://lists.qt-project.org/mailman/listinfo/qtwebengine
>



-- 
Aleksey Yermakov
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