It seems to be a crash some people get sometimes, better safe than
sorry.

BUG: 394737

They get removed from the model through their status, they get added by
the class who requested them. Will allow for simpler code and more
semantics for the Transactions.

Let the transaction itself deal with it

Mostly new syntax connect

The TransactionModel tracks all transactions, we need to make sure we are
reacting to the correct Transaction.

React when the transaction is removed/cancelled
Notify that the properties have changed whenever the transacition has
changed
Disconnect from former transactions. They will be deleted soon most likely,
but it's safer.
Restore the cancelled() signal

I've re-added a barebones TransactionListener which fulfills Discover's usage needs. The new API did mean that I could strip away a bunch of the code that had been in TransactionListener, which it now obtains via the Transaction object and the model. :)

CCMAIL:aleixpol@kde.org

The change is quite expensive and we don't need it anyway.

Centralize the running() signal emitting to the workerEvent instead
of doing it in other places that coincidentially worked.

More s/application/resource in the API. I *think* I got all the QML references. Too bad the symbol rename feature in Qt Creator can't also rename QML references to the symbols. :(

Made sure the Muon Installer still works after all the changes on libmuonprivate.
Muon Installer has not been ported (yet?) to the ResourcesModel

Reorganized the transactions to work with the new infrastructure
Fixed with the reviews extraction

- center the progress view code in the QML. It's view will depend a lot
on the visual representation, so having c++ code controlling that is not
comfortable.
- The new progress view mixes both types of transactions, finished and
unfinished, lets you execute easily

- remove progressbar from the view component
- make sure we're told about removed transactions

Makes it possible for the InstallApplicationButton to properly react
to state changes

In the process, Libmuon gets a TransactionModel class which provides data about the transactions using the ApplicationModel roles.

I still have some things to do like add a cancel button for pending transactions, but that will wait until tomorrow.

FEATURE:284255
FIXED-IN:1.4

The cancel button only works during the download portion of the transaction, and should only be shown during that time.

When we click to install or remove, we'll use a TransactionListener
that will tell us about the installation states.