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implement logic when date separator should be shown

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This commit is contained in:
Bruno Windels 2022-06-25 12:47:57 +02:00
parent 6697bb8ddf
commit 49752a0e7c
1 changed files with 25 additions and 3 deletions
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28
src/domain/session/room/timeline/tiles/SimpleTile.js
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@ -23,6 +23,7 @@ export class SimpleTile extends ViewModel {
super(options);
this._entry = entry;
this._date = this._entry.timestamp ? new Date(this._entry.timestamp) : null;
this._hasDateSeparator = false;
this._emitUpdate = undefined;
}
// view model props for all subclasses
@ -39,7 +40,25 @@ export class SimpleTile extends ViewModel {
}
get hasDateSeparator() {
return false;
return this._hasDateSeparator;
}
_updateDateSeparator(prev) {
let hasDateSeparator;
if (prev instanceof SimpleTile) {
if (prev && prev._date) {
hasDateSeparator = prev._date.getFullYear() !== this._date.getFullYear() ||
prev._date.getMonth() !== this._date.getMonth() ||
prev._date.getDate() !== this._date.getDate();
} else {
hasDateSeparator = !!this._date;
}
} else {
hasDateSeparator = true;
}
const changed = hasDateSeparator !== this._hasDateSeparator;
this._hasDateSeparator = hasDateSeparator;
return changed;
}
get id() {
@ -127,9 +146,12 @@ export class SimpleTile extends ViewModel {
tryIncludeEntry() {
return false;
}
// let item know it has a new sibling
updatePreviousSibling(/*prev*/) {
// let item know it has a new sibling
updatePreviousSibling(prev) {
if (this._updateDateSeparator(prev)) {
this.emitChange();
}
}
// let item know it has a new sibling