116 lines
3.3 KiB
JavaScript
116 lines
3.3 KiB
JavaScript
/**
|
|
* Copyright (c) 2015-present, Facebook, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under the BSD-style license found in the
|
|
* LICENSE file in the root directory of this source tree. An additional grant
|
|
* of patent rights can be found in the PATENTS file in the same directory.
|
|
*
|
|
* @providesModule SwipeableListViewDataSource
|
|
*/
|
|
'use strict';
|
|
|
|
const ListViewDataSource = require('ListViewDataSource');
|
|
|
|
/**
|
|
* Data source wrapper around ListViewDataSource to allow for tracking of
|
|
* which row is swiped open and close opened row(s) when another row is swiped
|
|
* open.
|
|
*
|
|
* See https://github.com/facebook/react-native/pull/5602 for why
|
|
* ListViewDataSource is not subclassed.
|
|
*/
|
|
class SwipeableListViewDataSource {
|
|
_previousOpenRowID: string;
|
|
_openRowID: string;
|
|
|
|
_dataBlob: any;
|
|
_dataSource: ListViewDataSource;
|
|
|
|
rowIdentities: Array<Array<string>>;
|
|
sectionIdentities: Array<string>;
|
|
|
|
constructor(params: Object) {
|
|
this._dataSource = new ListViewDataSource({
|
|
getRowData: params.getRowData,
|
|
getSectionHeaderData: params.getSectionHeaderData,
|
|
rowHasChanged: (row1, row2) => {
|
|
/**
|
|
* Row needs to be re-rendered if its swiped open/close status is
|
|
* changed, or its data blob changed.
|
|
*/
|
|
return (
|
|
(row1.id !== this._previousOpenRowID && row2.id === this._openRowID) ||
|
|
(row1.id === this._previousOpenRowID && row2.id !== this._openRowID) ||
|
|
params.rowHasChanged(row1, row2)
|
|
);
|
|
},
|
|
sectionHeaderHasChanged: params.sectionHeaderHasChanged,
|
|
});
|
|
}
|
|
|
|
cloneWithRowsAndSections(
|
|
dataBlob: any,
|
|
sectionIdentities: ?Array<string>,
|
|
rowIdentities: ?Array<Array<string>>
|
|
): SwipeableListViewDataSource {
|
|
this._dataSource = this._dataSource.cloneWithRowsAndSections(
|
|
dataBlob,
|
|
sectionIdentities,
|
|
rowIdentities
|
|
);
|
|
|
|
this._dataBlob = dataBlob;
|
|
this.rowIdentities = this._dataSource.rowIdentities;
|
|
this.sectionIdentities = this._dataSource.sectionIdentities;
|
|
|
|
return this;
|
|
}
|
|
|
|
// For the actual ListView to use
|
|
getDataSource(): ListViewDataSource {
|
|
return this._dataSource;
|
|
}
|
|
|
|
getOpenRowID(): ?string {
|
|
return this._openRowID;
|
|
}
|
|
|
|
getFirstRowID(): ?string {
|
|
/**
|
|
* If rowIdentities is specified, find the first data row from there since
|
|
* we don't want to attempt to bounce section headers. If unspecified, find
|
|
* the first data row from _dataBlob.
|
|
*/
|
|
if (this.rowIdentities) {
|
|
return this.rowIdentities[0] && this.rowIdentities[0][0];
|
|
}
|
|
return Object.keys(this._dataBlob)[0];
|
|
}
|
|
|
|
getLastRowID(): ?string {
|
|
if (this.rowIdentities && this.rowIdentities.length) {
|
|
const lastSection = this.rowIdentities[this.rowIdentities.length - 1];
|
|
if (lastSection && lastSection.length) {
|
|
return lastSection[lastSection.length - 1];
|
|
}
|
|
}
|
|
return Object.keys(this._dataBlob)[this._dataBlob.length - 1];
|
|
}
|
|
|
|
setOpenRowID(rowID: string): SwipeableListViewDataSource {
|
|
this._previousOpenRowID = this._openRowID;
|
|
this._openRowID = rowID;
|
|
|
|
this._dataSource = this._dataSource.cloneWithRowsAndSections(
|
|
this._dataBlob,
|
|
this.sectionIdentities,
|
|
this.rowIdentities
|
|
);
|
|
|
|
return this;
|
|
}
|
|
}
|
|
|
|
module.exports = SwipeableListViewDataSource;
|