Re: [Interest] QML id property to string?

[Jason H]

Awesome! Thanks.

 

But shouldn't this be in QML by default? Seems like it'd be a simple thing to add and use?

 

 

 

Sent: Thursday, March 10, 2016 at 1:10 PM
From: "Jérôme Godbout" <jer...@bodycad.com>
To: "Jason H" <jh...@gmx.com>
Cc: "Dmitry Volosnykh" <dmitry.volosn...@gmail.com>, "interest@qt-project.org" <interest@qt-project.org>
Subject: Re: [Interest] QML id property to string?

Another useful one:

 

Q_INVOKABLE QString MySingleton::ownership( QObject * object ) const

{

auto ownership = QQmlEngine::contextForObject(object)->engine()->objectOwnership(object);

switch(ownership)

{

case QQmlEngine::CppOwnership: return QString("CppOwnership");

case QQmlEngine::_javascript_Ownership: return QString("_javascript_Ownership");

default: break;

}

       return QString("error");

}

 

On Thu, Mar 10, 2016 at 1:07 PM, Jérôme Godbout <jer...@bodycad.com> wrote:

You can create a C++ method for this, expose it into a C++ singleton to easily access it:

 

Q_INVOKABLE QString MySingleton::idName(QObject * object) const

{

const auto context = qmlContext(object);

return context ? context->nameForObject(object): QString("context not found");

}

 

http://doc.qt.io/qt-5/qqmlcontext.html#nameForObject

 

For Qml it return the context id.

 

Other useful methods would be address and file where the object come from:

Q_INVOKABLE QString MySingleton::objHexAddress(QObject * object) const

{

return QString().sprintf("%08p", object);

}

 

Q_INVOKABLE QUrl MySingleton::whereAmIDeclared(QObject * object) const

{

if (object)

if (auto context = QQmlEngine::contextForObject(object))

return context->baseUrl();

return QUrl();

}

 

This help a lot to debug into the console.

Regards,

Jerome

 

On Thu, Mar 10, 2016 at 12:45 PM, Jason H <jh...@gmx.com> wrote:

Yes, Ideally what I want:

1. Be able to get object id as string

2. Search the object heirarchy for that string and get that object 

 

Sent: Thursday, March 10, 2016 at 12:14 PM
From: "Dmitry Volosnykh" <dmitry.volosn...@gmail.com>
To: "Jason H" <jh...@gmx.com>, "interest@qt-project.org" <interest@qt-project.org>
Subject: Re: [Interest] QML id property to string?

I feel the same need frequently, too. Without such feature I have to set objectName by copy-pasting and qouting id. This is quite annoying.

 

On Thu, Mar 10, 2016 at 8:08 PM Jason H <jh...@gmx.com> wrote:

A few times now, I've wanted to display the id as a string. Usually when something goes wrong on the console, but sometimes in a hash/map.  I've got a function that takes an object (QML item) and does some processing on it. Is there a way to get it? I know I can just set a property, but then that has to be maintained separately.
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