Registering an Enumeration through a Plugin

[Gary_]

XmlListModel has the ability to access it's enumeration values for Status in QML (Qt Quick).

@
if (status == XmlListModel.Ready) {
// do something
}
@

I would like my class to expose it's enumerated values as well. The following QML does not work:

@
if (status == MyModel.Ready) { // ERROR (ReferenceError: Can't find variable: MyModel)
// do something
}

if (status == XmlListModel.Ready) { // SUCCESS (My enum values match XmlListModel's enums)
// do something
}

if (status == 1) { // SUCCESS (Just making sure my plugin works and it isn't a red herring)
// do something
}
@

I get the following error: ReferenceError: Can't find variable: MyModel.

MyModel.h

@
class MyModel : public QAbstractListModel
{
Q_Object
Q_PROPERTY(Status status READ getStatus NOTIFY statusChanged);

public:
Q_ENUMS(Status)
enum Status { Null, Ready, Loading, Error };
Status getStatus() const;

private:
Status _status;

signals:
void statusChanged(MyModel::Status);

...

}
@

MyPlugin.cpp

@
void Plugin::registerTypes(const char *uri)
{
qmlRegisterType<MyModel>(uri, 1, 0, "MyModel");
}

Q_EXPORT_PLUGIN2(MyPlugin, MyPugin)
@

[mbrasser]

This sounds like a bug. Are you using an import statement for your plugin (e.g. "import MyPlugin 1.0" or "import MyPlugin 1.0 as MyPlugin")?

[Gary_]

I am not using import statement. I am using qmldir and it resides in the same directory as the main qml file.

[mbrasser]

Okay. This seems to work fine in the non-plugin case, and I suspect it would work correctly for plugins with an explicit import statement as well. Could you please add a bug report for this using the "tracker":http://bugreports.qt.nokia.com?

[Schneidi]

I have a problem similar to this topic except the use of the plugin.

I build an qml interface to share signals and information between my c++ and qml layer.

It works fine but I can't provide my enums to qml. I already saw an example to this topic but I miss some informations.

Could you show me an Example of how to providing an enum to qml ?

Thanks

[thorbjorn]

@Schneidi

Did you try the code posted by Gary_? That is the correct way to expose an enum to QML as far as I know, which has worked for me both with and without using a plugin.

(though his Q_OBJECT macro is wrongly written as Q_Object)

[Schneidi]

Hi Thorbjørn

sorry had some other issues to solve.
I already tried it this way but I don't know how to implement the READ method
in this case the

Status getStatus() const;

Do you have a complete example for this ?

[Gary_]

Sorry for not updating till now. I was able to resolve this issue.

First, I had to change the registration function to:

@
void Plugin::registerTypes(const char *uri)
{
qmlRegisterType<MyModel>("MyPlugin", 1, 0, "MyModel");
}

Q_EXPORT_PLUGIN2(MyPlugin, MyPugin)
@

Then included:

@
import MyPlugin 1.0
@

Without any additional changes, the Enumeration was visible to QML.

[thorbjorn]

Hmm, you shouldn't do that change to qmlRegisterType though, and it's strange that it would fix your issue. Did you have a look at the value of "uri"?