Invocation from function in QML? - qml

Question

I can share an item easily using an InvokeActionItem in a Page but I need to be able to call it in a listview item. I've managed to trigger an invoke, but I cannot figure out how to add data when triggering it. I keep getting an error message of
InvocationPrivate::setQuery: you are not allowed to change InvokeQuery object
Note: I am trying to do this in purely QML, I will do it via c++ if necessary but QML would be preferable.
Code that works inside a Page object:
actions: [
InvokeActionItem {
ActionBar.placement: ActionBarPlacement.OnBar
title: "Share"
query {
mimeType: "text/plain"
invokeActionId: "bb.action.SHARE"
}
onTriggered: {
//myTextProperty is a string variable property for the page.
data = myTextProperty;
}
}
]
The code I've tried to use in the other item is as follows, but does NOT work:
Container {
gestureHandlers: [
TapHandler {
LongPressHandler {
onLongPressed: {
console.log("Longpress");
invokeQuery.setData("test");
invokeShare.trigger("bb.action.SHARE");
}
}
]
attachedObjects: [
Invocation {
id: invokeShare
query: InvokeQuery {
id:invokeQuery
mimeType: "text/plain"
}
}
]
}
Is there a way to change the data for an invoke purely with QML or do I need to just run it through c++ instead?

Answer 1

After a fair amount of browsing forums and testing various methods, I have finally found one that works.
Add the following in your attachedObjects:
attachedObjects: [
Invocation {
id: invokeShare
query: InvokeQuery {
id:invokeQuery
mimeType: "text/plain"
}
onArmed: {
if (invokeQuery.data != "") {
trigger("bb.action.SHARE");
}
}
}
]
Then wherever you need to call the invocation do the following:
invokeQuery.mimeType = "text/plain"
invokeQuery.data = "mytext";
invokeQuery.updateQuery();
Note that if you do not do a check in the onArmed for data it will automatically call the invocation on creation - in the case of a listview this can result in 20+ screens asking you to share on bbm... ;)

Answer 2

You can actually use the InvokeActionItem, you just have to call updateQuery to retrigger the invokeQuery.
When the ListItemData changes, the binding will cause the values to update.
InvokeActionItem {
enabled: recordItem.ListItem.data.videoId != undefined
id: invokeAction
query{
uri: "http://www.youtube.com/watch?v=" + recordItem.ListItem.data.videoId
onQueryChanged: {
updateQuery()
}
}
}

Answer 3

For remove "InvocationPrivate::setQuery: you are not allowed to change InvokeQuery object" message I use this:
attachedObjects: [
Invocation {
id: invoke
query {
mimeType: "text/plain"
invokeTargetId: "sys.bbm.sharehandler"
onDataChanged: {
console.log("change data")
}
}
onArmed: {
if (invoke.query.data != "") {
invoke.trigger("bb.action.SHARE");
}
}
}
]
function shareBBM(){
invoke.query.setData("TEXT TO SHARE");
invoke.query.updateQuery();
}