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Make ScrollPanel keep track of when fill requests are happening

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The dance to avoid doing repeated fill requests on every update is common, so
add it to ScrollPanel. Let onFillRequest return a promise, which prevents any
updates until it completes.
This commit is contained in:
Richard van der Hoff
2015-12-24 00:10:21 +00:00
parent 103b0a03b1
commit f2a24521dc
2 changed files with 72 additions and 18 deletions
src/components/structures
RoomView.jsScrollPanel.js

27
src/components/structures/RoomView.js

@ -330,8 +330,6 @@ module.exports = React.createClass({
this.scrollToBottom();
this.sendReadReceipt();
this.refs.messagePanel.checkFillState();
},
componentDidUpdate: function() {
@ -353,30 +351,25 @@ module.exports = React.createClass({
});
this.setState({paginating: false});
// we might not have got enough (or, indeed, any) results from the
// pagination request, so give the messagePanel a chance to set off
// another.
this.refs.messagePanel.checkFillState();
},
onSearchResultsFillRequest: function(backwards) {
if (!backwards || this.state.searchInProgress)
return;
if (!backwards)
return false;
if (this.nextSearchBatch) {
if (DEBUG_SCROLL) console.log("requesting more search results");
this._getSearchBatch(this.state.searchTerm,
this.state.searchScope);
return this._getSearchBatch(this.state.searchTerm,
this.state.searchScope).then(true);
} else {
if (DEBUG_SCROLL) console.log("no more search results");
return false;
}
},
// set off a pagination request.
onMessageListFillRequest: function(backwards) {
if (!backwards || this.state.paginating)
if (!backwards)
return;
// Either wind back the message cap (if there are enough events in the
@ -386,11 +379,13 @@ module.exports = React.createClass({
var cap = Math.min(this.state.messageCap + PAGINATE_SIZE, this.state.room.timeline.length);
if (DEBUG_SCROLL) console.log("winding back message cap to", cap);
this.setState({messageCap: cap});
return true;
} else if(this.state.room.oldState.paginationToken) {
var cap = this.state.messageCap + PAGINATE_SIZE;
if (DEBUG_SCROLL) console.log("starting paginate to cap", cap);
this.setState({messageCap: cap, paginating: true});
MatrixClientPeg.get().scrollback(this.state.room, PAGINATE_SIZE).finally(this._paginateCompleted).done();
return MatrixClientPeg.get().scrollback(this.state.room, PAGINATE_SIZE).
finally(this._paginateCompleted).then(true);
}
},
@ -515,8 +510,8 @@ module.exports = React.createClass({
var self = this;
if (DEBUG_SCROLL) console.log("sending search request");
MatrixClientPeg.get().search({ body: this._getSearchCondition(term, scope),
next_batch: this.nextSearchBatch })
return MatrixClientPeg.get().search({ body: this._getSearchCondition(term, scope),
next_batch: this.nextSearchBatch })
.then(function(data) {
if (DEBUG_SCROLL) console.log("search complete");
if (!self.state.searching || self.searchId != searchId) {