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Add visual indication that data is being fetched 

This turns `paginationInProgress` field of `TimelineModel` into a `Q_PROPERTY`, so the Ui can bind to it.
For the moment, I'm showing the same spinner as we do during initial sync. It's not ideal, on the count of being giant and in the middle but it's better than nothing. We can make it more subtle later.
This commit is contained in:
Lasath Fernando 2020-04-28 02:07:24 -07:00
parent 19ec8d261d
commit 1f9d3024b1
3 changed files with 23 additions and 6 deletions
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2
resources/qml/TimelineView.qml
View File

@ -93,7 +93,7 @@ Page {
BusyIndicator {
anchors.centerIn: parent
running: timelineManager.isInitialSync
running: timelineManager.isInitialSync || chat.model.paginationInProgress
height: 200
width: 200
z: 3

20
src/timeline/TimelineModel.cpp
View File

@ -432,15 +432,26 @@ TimelineModel::canFetchMore(const QModelIndex &) const
return false;
}
void
TimelineModel::setPaginationInProgress(const bool paginationInProgress)
{
if (m_paginationInProgress == paginationInProgress) {
return;
}
m_paginationInProgress = paginationInProgress;
emit paginationInProgressChanged(m_paginationInProgress);
}
void
TimelineModel::fetchMore(const QModelIndex &)
{
if (paginationInProgress) {
if (m_paginationInProgress) {
nhlog::ui()->warn("Already loading older messages");
return;
}
paginationInProgress = true;
setPaginationInProgress(true);
mtx::http::MessagesOpts opts;
opts.room_id = room_id_.toStdString();
opts.from = prev_batch_token_.toStdString();
@ -455,12 +466,13 @@ TimelineModel::fetchMore(const QModelIndex &)
mtx::errors::to_string(err->matrix_error.errcode),
err->matrix_error.error,
err->parse_error);
paginationInProgress = false;
emit oldMessagesRetrieved(std::move(res));
setPaginationInProgress(false);
return;
}
emit oldMessagesRetrieved(std::move(res));
paginationInProgress = false;
setPaginationInProgress(false);
});
}

7
src/timeline/TimelineModel.h
View File

@ -124,6 +124,7 @@ class TimelineModel : public QAbstractListModel
Q_PROPERTY(std::vector<QString> typingUsers READ typingUsers WRITE updateTypingUsers NOTIFY
typingUsersChanged)
Q_PROPERTY(QString reply READ reply WRITE setReply NOTIFY replyChanged RESET resetReply)
Q_PROPERTY(bool paginationInProgress READ paginationInProgress NOTIFY paginationInProgressChanged)
public:
explicit TimelineModel(TimelineViewManager *manager,
@ -208,6 +209,7 @@ public slots:
}
}
std::vector<QString> typingUsers() const { return typingUsers_; }
bool paginationInProgress() const { return m_paginationInProgress; }
QString reply() const { return reply_; }
void setReply(QString newReply)
@ -246,6 +248,7 @@ signals:
void eventFetched(QString requestingEvent, mtx::events::collections::TimelineEvents event);
void typingUsersChanged(std::vector<QString> users);
void replyChanged(QString reply);
void paginationInProgressChanged(const bool);
private:
DecryptionResult decryptEvent(
@ -261,6 +264,8 @@ private:
mtx::http::RequestErr err);
void readEvent(const std::string &id);
void setPaginationInProgress(const bool paginationInProgress);
QHash<QString, mtx::events::collections::TimelineEvents> events;
QSet<QString> read;
QList<QString> pending;
@ -270,8 +275,8 @@ private:
QString prev_batch_token_;
bool isInitialSync = true;
bool paginationInProgress = false;
bool decryptDescription = true;
bool m_paginationInProgress = false;
QString currentId;
QString reply_;