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71380: Remove object updates for drag-and-drop and send out immediate patch requests for bitstream drag-and-drop

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This commit is contained in:
Kristof De Langhe
2020-06-15 17:48:03 +02:00
parent 8b8d7ba91a
commit 16d3d0e063
8 changed files with 98 additions and 474 deletions
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3
src/app/+item-page/edit-item-page/item-bitstreams/item-bitstreams.component.html
View File

@@ -36,7 +36,8 @@
<ds-item-edit-bitstream-bundle *ngFor="let bundle of bundles"
[bundle]="bundle"
[item]="item"
[columnSizes]="columnSizes">
[columnSizes]="columnSizes"
(dropObject)="dropBitstream(bundle, $event)">
</ds-item-edit-bitstream-bundle>
</div>
<div *ngIf="bundles?.length === 0"

67
src/app/+item-page/edit-item-page/item-bitstreams/item-bitstreams.component.ts
View File

@@ -1,6 +1,6 @@
import { ChangeDetectorRef, Component, Inject, OnDestroy } from '@angular/core';
import { ChangeDetectorRef, Component, OnDestroy } from '@angular/core';
import { AbstractItemUpdateComponent } from '../abstract-item-update/abstract-item-update.component';
import { filter, map, switchMap, take, tap } from 'rxjs/operators';
import { filter, map, switchMap, take } from 'rxjs/operators';
import { Observable } from 'rxjs/internal/Observable';
import { Subscription } from 'rxjs/internal/Subscription';
import { ItemDataService } from '../../../core/data/item-data.service';
@@ -9,8 +9,8 @@ import { ActivatedRoute, Router } from '@angular/router';
import { NotificationsService } from '../../../shared/notifications/notifications.service';
import { TranslateService } from '@ngx-translate/core';
import { BitstreamDataService } from '../../../core/data/bitstream-data.service';
import { hasValue, isNotEmpty, isNotEmptyOperator } from '../../../shared/empty.util';
import { zip as observableZip, combineLatest as observableCombineLatest, of as observableOf } from 'rxjs';
import { hasValue, isNotEmpty } from '../../../shared/empty.util';
import { zip as observableZip, of as observableOf } from 'rxjs';
import { ErrorResponse, RestResponse } from '../../../core/cache/response.models';
import { ObjectCacheService } from '../../../core/cache/object-cache.service';
import { RequestService } from '../../../core/data/request.service';
@@ -22,8 +22,6 @@ import { Bundle } from '../../../core/shared/bundle.model';
import { FieldUpdate, FieldUpdates } from '../../../core/data/object-updates/object-updates.reducer';
import { Bitstream } from '../../../core/shared/bitstream.model';
import { FieldChangeType } from '../../../core/data/object-updates/object-updates.actions';
import { Operation } from 'fast-json-patch';
import { MoveOperation } from 'fast-json-patch/lib/core';
import { BundleDataService } from '../../../core/data/bundle-data.service';
import { PaginatedSearchOptions } from '../../../shared/search/paginated-search-options.model';
import { ResponsiveColumnSizes } from '../../../shared/responsive-table-sizes/responsive-column-sizes';
@@ -143,7 +141,6 @@ export class ItemBitstreamsComponent extends AbstractItemUpdateComponent impleme
/**
* Submit the current changes
* Bitstreams that were dragged around send out a patch request with move operations to the rest API
* Bitstreams marked as deleted send out a delete request to the rest API
* Display notifications and reset the current item/updates
*/
@@ -151,32 +148,6 @@ export class ItemBitstreamsComponent extends AbstractItemUpdateComponent impleme
this.submitting = true;
const bundlesOnce$ = this.bundles$.pipe(take(1));
// Fetch all move operations for each bundle
const moveOperations$ = bundlesOnce$.pipe(
switchMap((bundles: Bundle[]) => observableZip(...bundles.map((bundle: Bundle) =>
this.objectUpdatesService.getMoveOperations(bundle.self).pipe(
take(1),
map((operations: MoveOperation[]) => [...operations.map((operation: MoveOperation) => Object.assign(operation, {
from: `/_links/bitstreams${operation.from}/href`,
path: `/_links/bitstreams${operation.path}/href`
}))])
)
)))
);
// Send out an immediate patch request for each bundle
const patchResponses$ = observableCombineLatest(bundlesOnce$, moveOperations$).pipe(
switchMap(([bundles, moveOperationList]: [Bundle[], Operation[][]]) =>
observableZip(...bundles.map((bundle: Bundle, index: number) => {
if (isNotEmpty(moveOperationList[index])) {
return this.bundleService.patch(bundle, moveOperationList[index]);
} else {
return observableOf(undefined);
}
}))
)
);
// Fetch all removed bitstreams from the object update service
const removedBitstreams$ = bundlesOnce$.pipe(
switchMap((bundles: Bundle[]) => observableZip(
@@ -201,19 +172,35 @@ export class ItemBitstreamsComponent extends AbstractItemUpdateComponent impleme
);
// Perform the setup actions from above in order and display notifications
patchResponses$.pipe(
switchMap((responses: RestResponse[]) => {
this.displayNotifications('item.edit.bitstreams.notifications.move', responses);
return removedResponses$
}),
take(1)
).subscribe((responses: RestResponse[]) => {
removedResponses$.pipe(take(1)).subscribe((responses: RestResponse[]) => {
this.displayNotifications('item.edit.bitstreams.notifications.remove', responses);
this.reset();
this.submitting = false;
});
}
/**
* A bitstream was dropped in a new location. Send out a Move Patch request to the REST API, display notifications,
* refresh the bundle's cache (so the lists can properly reload) and call the event's callback function (which will
* navigate the user to the correct page)
* @param bundle The bundle to send patch requests to
* @param event The event containing the index the bitstream came from and was dropped to
*/
dropBitstream(bundle: Bundle, event: any) {
if (hasValue(event) && hasValue(event.fromIndex) && hasValue(event.toIndex) && hasValue(event.finish)) {
const moveOperation = Object.assign({
op: 'move',
from: `/_links/bitstreams/${event.fromIndex}/href`,
path: `/_links/bitstreams/${event.toIndex}/href`
});
this.bundleService.patch(bundle, [moveOperation]).pipe(take(1)).subscribe((response: RestResponse) => {
this.displayNotifications('item.edit.bitstreams.notifications.move', [response]);
this.requestService.removeByHrefSubstring(bundle.self);
event.finish();
});
}
}
/**
* Display notifications
* - Error notification for each failed response with their message

2
src/app/+item-page/edit-item-page/item-bitstreams/item-edit-bitstream-bundle/item-edit-bitstream-bundle.component.html
View File

@@ -17,5 +17,5 @@
</div>
</div>
</div>
<ds-paginated-drag-and-drop-bitstream-list [bundle]="bundle" [columnSizes]="columnSizes"></ds-paginated-drag-and-drop-bitstream-list>
<ds-paginated-drag-and-drop-bitstream-list [bundle]="bundle" [columnSizes]="columnSizes" (dropObject)="dropObject.emit($event)"></ds-paginated-drag-and-drop-bitstream-list>
</ng-template>

9
src/app/+item-page/edit-item-page/item-bitstreams/item-edit-bitstream-bundle/item-edit-bitstream-bundle.component.ts
View File

@@ -1,4 +1,4 @@
import { Component, Input, OnInit, ViewChild, ViewContainerRef } from '@angular/core';
import { Component, EventEmitter, Input, OnInit, Output, ViewChild, ViewContainerRef } from '@angular/core';
import { Bundle } from '../../../../core/shared/bundle.model';
import { Item } from '../../../../core/shared/item.model';
import { ResponsiveColumnSizes } from '../../../../shared/responsive-table-sizes/responsive-column-sizes';
@@ -36,6 +36,13 @@ export class ItemEditBitstreamBundleComponent implements OnInit {
*/
@Input() columnSizes: ResponsiveTableSizes;
/**
* Send an event when the user drops an object on the pagination
* The event contains details about the index the object came from and is dropped to (across the entirety of the list,
* not just within a single page)
*/
@Output() dropObject: EventEmitter<any> = new EventEmitter<any>();
/**
* The bootstrap sizes used for the Bundle Name column
* This column stretches over the first 3 columns and thus is a combination of their sizes processed in ngOnInit

88
src/app/core/data/object-updates/object-updates.actions.ts
View File

@@ -8,7 +8,6 @@ import {INotification} from '../../../shared/notifications/models/notification.m
*/
export const ObjectUpdatesActionTypes = {
INITIALIZE_FIELDS: type('dspace/core/cache/object-updates/INITIALIZE_FIELDS'),
ADD_PAGE_TO_CUSTOM_ORDER: type('dspace/core/cache/object-updates/ADD_PAGE_TO_CUSTOM_ORDER'),
SET_EDITABLE_FIELD: type('dspace/core/cache/object-updates/SET_EDITABLE_FIELD'),
SET_VALID_FIELD: type('dspace/core/cache/object-updates/SET_VALID_FIELD'),
ADD_FIELD: type('dspace/core/cache/object-updates/ADD_FIELD'),
@@ -17,8 +16,7 @@ export const ObjectUpdatesActionTypes = {
REINSTATE: type('dspace/core/cache/object-updates/REINSTATE'),
REMOVE: type('dspace/core/cache/object-updates/REMOVE'),
REMOVE_ALL: type('dspace/core/cache/object-updates/REMOVE_ALL'),
REMOVE_FIELD: type('dspace/core/cache/object-updates/REMOVE_FIELD'),
MOVE: type('dspace/core/cache/object-updates/MOVE'),
REMOVE_FIELD: type('dspace/core/cache/object-updates/REMOVE_FIELD')
};
/* tslint:disable:max-classes-per-file */
@@ -29,8 +27,7 @@ export const ObjectUpdatesActionTypes = {
export enum FieldChangeType {
UPDATE = 0,
ADD = 1,
REMOVE = 2,
MOVE = 3
REMOVE = 2
}
/**
@@ -41,10 +38,7 @@ export class InitializeFieldsAction implements Action {
payload: {
url: string,
fields: Identifiable[],
lastModified: Date,
order: string[],
pageSize: number,
page: number
lastModified: Date
};
/**
@@ -61,42 +55,9 @@ export class InitializeFieldsAction implements Action {
constructor(
url: string,
fields: Identifiable[],
lastModified: Date,
order: string[] = [],
pageSize: number = 9999,
page: number = 0
lastModified: Date
) {
this.payload = { url, fields, lastModified, order, pageSize, page };
}
}
/**
* An ngrx action to initialize a new page's fields in the ObjectUpdates state
*/
export class AddPageToCustomOrderAction implements Action {
type = ObjectUpdatesActionTypes.ADD_PAGE_TO_CUSTOM_ORDER;
payload: {
url: string,
fields: Identifiable[],
order: string[],
page: number
};
/**
* Create a new AddPageToCustomOrderAction
*
* @param url The unique url of the page for which the fields are being added
* @param fields The identifiable fields of which the updates are kept track of
* @param order A custom order to keep track of objects moving around
* @param page The page to populate in the custom order
*/
constructor(
url: string,
fields: Identifiable[],
order: string[] = [],
page: number = 0
) {
this.payload = { url, fields, order, page };
this.payload = { url, fields, lastModified };
}
}
@@ -320,43 +281,6 @@ export class RemoveFieldUpdateAction implements Action {
}
}
/**
* An ngrx action to remove a single field update in the ObjectUpdates state for a certain page url and field uuid
*/
export class MoveFieldUpdateAction implements Action {
type = ObjectUpdatesActionTypes.MOVE;
payload: {
url: string,
from: number,
to: number,
fromPage: number,
toPage: number,
field?: Identifiable
};
/**
* Create a new RemoveObjectUpdatesAction
*
* @param url
* the unique url of the page for which a field's change should be removed
* @param from The index of the object to move
* @param to The index to move the object to
* @param fromPage The page to move the object from
* @param toPage The page to move the object to
* @param field Optional field to add to the fieldUpdates list (useful when we want to track updates across multiple pages)
*/
constructor(
url: string,
from: number,
to: number,
fromPage: number,
toPage: number,
field?: Identifiable
) {
this.payload = { url, from, to, fromPage, toPage, field };
}
}
/* tslint:enable:max-classes-per-file */
/**
@@ -369,8 +293,6 @@ export type ObjectUpdatesAction
| ReinstateObjectUpdatesAction
| RemoveObjectUpdatesAction
| RemoveFieldUpdateAction
| MoveFieldUpdateAction
| AddPageToCustomOrderAction
| RemoveAllObjectUpdatesAction
| SelectVirtualMetadataAction
| SetEditableFieldUpdateAction

193
src/app/core/data/object-updates/object-updates.reducer.ts
View File

@@ -1,8 +1,8 @@
import {
AddFieldUpdateAction, AddPageToCustomOrderAction,
AddFieldUpdateAction,
DiscardObjectUpdatesAction,
FieldChangeType,
InitializeFieldsAction, MoveFieldUpdateAction,
InitializeFieldsAction,
ObjectUpdatesAction,
ObjectUpdatesActionTypes,
ReinstateObjectUpdatesAction,
@@ -12,9 +12,7 @@ import {
SetValidFieldUpdateAction,
SelectVirtualMetadataAction,
} from './object-updates.actions';
import { hasNoValue, hasValue, isEmpty, isNotEmpty } from '../../../shared/empty.util';
import { moveItemInArray, transferArrayItem } from '@angular/cdk/drag-drop';
import { from } from 'rxjs/internal/observable/from';
import { hasNoValue, hasValue } from '../../../shared/empty.util';
import {Relationship} from '../../shared/item-relationships/relationship.model';
/**
@@ -83,20 +81,6 @@ export interface DeleteRelationship extends Relationship {
keepRightVirtualMetadata: boolean,
}
/**
* A custom order given to the list of objects
*/
export interface CustomOrder {
initialOrderPages: OrderPage[],
newOrderPages: OrderPage[],
pageSize: number;
changed: boolean
}
export interface OrderPage {
order: string[]
}
/**
* The updated state of a single page
*/
@@ -105,7 +89,6 @@ export interface ObjectUpdatesEntry {
fieldUpdates: FieldUpdates;
virtualMetadataSources: VirtualMetadataSources;
lastModified: Date;
customOrder: CustomOrder
}
/**
@@ -138,9 +121,6 @@ export function objectUpdatesReducer(state = initialState, action: ObjectUpdates
case ObjectUpdatesActionTypes.INITIALIZE_FIELDS: {
return initializeFieldsUpdate(state, action as InitializeFieldsAction);
}
case ObjectUpdatesActionTypes.ADD_PAGE_TO_CUSTOM_ORDER: {
return addPageToCustomOrder(state, action as AddPageToCustomOrderAction);
}
case ObjectUpdatesActionTypes.ADD_FIELD: {
return addFieldUpdate(state, action as AddFieldUpdateAction);
}
@@ -168,9 +148,6 @@ export function objectUpdatesReducer(state = initialState, action: ObjectUpdates
case ObjectUpdatesActionTypes.SET_VALID_FIELD: {
return setValidFieldUpdate(state, action as SetValidFieldUpdateAction);
}
case ObjectUpdatesActionTypes.MOVE: {
return moveFieldUpdate(state, action as MoveFieldUpdateAction);
}
default: {
return state;
}
@@ -186,50 +163,18 @@ function initializeFieldsUpdate(state: any, action: InitializeFieldsAction) {
const url: string = action.payload.url;
const fields: Identifiable[] = action.payload.fields;
const lastModifiedServer: Date = action.payload.lastModified;
const order = action.payload.order;
const pageSize = action.payload.pageSize;
const page = action.payload.page;
const fieldStates = createInitialFieldStates(fields);
const initialOrderPages = addOrderToPages([], order, pageSize, page);
const newPageState = Object.assign(
{},
state[url],
{ fieldStates: fieldStates },
{ fieldUpdates: {} },
{ virtualMetadataSources: {} },
{ lastModified: lastModifiedServer },
{ customOrder: {
initialOrderPages: initialOrderPages,
newOrderPages: initialOrderPages,
pageSize: pageSize,
changed: false }
}
{ lastModified: lastModifiedServer }
);
return Object.assign({}, state, { [url]: newPageState });
}
/**
* Add a page of objects to the state of a specific url and update a specific page of the custom order
* @param state The current state
* @param action The action to perform on the current state
*/
function addPageToCustomOrder(state: any, action: AddPageToCustomOrderAction) {
const url: string = action.payload.url;
const fields: Identifiable[] = action.payload.fields;
const fieldStates = createInitialFieldStates(fields);
const order = action.payload.order;
const page = action.payload.page;
const pageState: ObjectUpdatesEntry = state[url] || {};
const newPageState = Object.assign({}, pageState, {
fieldStates: Object.assign({}, pageState.fieldStates, fieldStates),
customOrder: Object.assign({}, pageState.customOrder, {
newOrderPages: addOrderToPages(pageState.customOrder.newOrderPages, order, pageState.customOrder.pageSize, page),
initialOrderPages: addOrderToPages(pageState.customOrder.initialOrderPages, order, pageState.customOrder.pageSize, page)
})
});
return Object.assign({}, state, { [url]: newPageState });
}
/**
* Add a new update for a specific field to the store
* @param state The current state
@@ -338,19 +283,9 @@ function discardObjectUpdatesFor(url: string, state: any) {
}
});
const newCustomOrder = Object.assign({}, pageState.customOrder);
if (pageState.customOrder.changed) {
const initialOrder = pageState.customOrder.initialOrderPages;
if (isNotEmpty(initialOrder)) {
newCustomOrder.newOrderPages = initialOrder;
newCustomOrder.changed = false;
}
}
const discardedPageState = Object.assign({}, pageState, {
fieldUpdates: {},
fieldStates: newFieldStates,
customOrder: newCustomOrder
fieldStates: newFieldStates
});
return Object.assign({}, state, { [url]: discardedPageState }, { [url + OBJECT_UPDATES_TRASH_PATH]: pageState });
}
@@ -504,121 +439,3 @@ function createInitialFieldStates(fields: Identifiable[]) {
uuids.forEach((uuid: string) => fieldStates[uuid] = initialFieldState);
return fieldStates;
}
/**
* Method to add a list of objects to an existing FieldStates object
* @param fieldStates FieldStates to add states to
* @param fields Identifiable objects The list of objects to add to the FieldStates
*/
function addFieldStates(fieldStates: FieldStates, fields: Identifiable[]) {
const uuids = fields.map((field: Identifiable) => field.uuid);
uuids.forEach((uuid: string) => fieldStates[uuid] = initialFieldState);
return fieldStates;
}
/**
* Move an object within the custom order of a page state
* @param state The current state
* @param action The move action to perform
*/
function moveFieldUpdate(state: any, action: MoveFieldUpdateAction) {
const url = action.payload.url;
const fromIndex = action.payload.from;
const toIndex = action.payload.to;
const fromPage = action.payload.fromPage;
const toPage = action.payload.toPage;
const field = action.payload.field;
const pageState: ObjectUpdatesEntry = state[url];
const initialOrderPages = pageState.customOrder.initialOrderPages;
const customOrderPages = [...pageState.customOrder.newOrderPages];
// Create a copy of the custom orders for the from- and to-pages
const fromPageOrder = [...customOrderPages[fromPage].order];
const toPageOrder = [...customOrderPages[toPage].order];
if (fromPage === toPage) {
if (isNotEmpty(customOrderPages[fromPage]) && isNotEmpty(customOrderPages[fromPage].order[fromIndex]) && isNotEmpty(customOrderPages[fromPage].order[toIndex])) {
// Move an item from one index to another within the same page
moveItemInArray(fromPageOrder, fromIndex, toIndex);
// Update the custom order for this page
customOrderPages[fromPage] = { order: fromPageOrder };
}
} else {
if (isNotEmpty(customOrderPages[fromPage]) && hasValue(customOrderPages[toPage]) && isNotEmpty(customOrderPages[fromPage].order[fromIndex])) {
// Move an item from one index of one page to an index in another page
transferArrayItem(fromPageOrder, toPageOrder, fromIndex, toIndex);
// Update the custom order for both pages
customOrderPages[fromPage] = { order: fromPageOrder };
customOrderPages[toPage] = { order: toPageOrder };
}
}
// Create a field update if it doesn't exist for this field yet
let fieldUpdate = {};
if (hasValue(field)) {
fieldUpdate = pageState.fieldUpdates[field.uuid];
if (hasNoValue(fieldUpdate)) {
fieldUpdate = { field: field, changeType: undefined }
}
}
// Update the store's state with new values and return
return Object.assign({}, state, { [url]: Object.assign({}, pageState, {
fieldUpdates: Object.assign({}, pageState.fieldUpdates, hasValue(field) ? { [field.uuid]: fieldUpdate } : {}),
customOrder: Object.assign({}, pageState.customOrder, { newOrderPages: customOrderPages, changed: checkForOrderChanges(initialOrderPages, customOrderPages) })
})})
}
/**
* Compare two lists of OrderPage objects and return whether there's at least one change in the order of objects within
* @param initialOrderPages The initial list of OrderPages
* @param customOrderPages The changed list of OrderPages
*/
function checkForOrderChanges(initialOrderPages: OrderPage[], customOrderPages: OrderPage[]) {
let changed = false;
initialOrderPages.forEach((orderPage: OrderPage, page: number) => {
if (isNotEmpty(orderPage) && isNotEmpty(orderPage.order) && isNotEmpty(customOrderPages[page]) && isNotEmpty(customOrderPages[page].order)) {
orderPage.order.forEach((id: string, index: number) => {
if (id !== customOrderPages[page].order[index]) {
changed = true;
return;
}
});
if (changed) {
return;
}
}
});
return changed;
}
/**
* Initialize a custom order page by providing the list of all pages, a list of UUIDs, pageSize and the page to populate
* @param initialPages The initial list of OrderPage objects
* @param order The list of UUIDs to create a page for
* @param pageSize The pageSize used to populate empty spacer pages
* @param page The index of the page to add
*/
function addOrderToPages(initialPages: OrderPage[], order: string[], pageSize: number, page: number): OrderPage[] {
const result = [...initialPages];
const orderPage: OrderPage = { order: order };
if (page < result.length) {
// The page we're trying to add already exists in the list. Overwrite it.
result[page] = orderPage;
} else if (page === result.length) {
// The page we're trying to add is the next page in the list, add it.
result.push(orderPage);
} else {
// The page we're trying to add is at least one page ahead of the list, fill the list with empty pages before adding the page.
const emptyOrder = [];
for (let i = 0; i < pageSize; i++) {
emptyOrder.push(undefined);
}
const emptyOrderPage: OrderPage = { order: emptyOrder };
for (let i = result.length; i < page; i++) {
result.push(emptyOrderPage);
}
result.push(orderPage);
}
return result;
}

89
src/app/core/data/object-updates/object-updates.service.ts
View File

@@ -8,16 +8,15 @@ import {
Identifiable,
OBJECT_UPDATES_TRASH_PATH,
ObjectUpdatesEntry,
ObjectUpdatesState, OrderPage,
ObjectUpdatesState,
VirtualMetadataSource
} from './object-updates.reducer';
import { Observable } from 'rxjs';
import {
AddFieldUpdateAction, AddPageToCustomOrderAction,
AddFieldUpdateAction,
DiscardObjectUpdatesAction,
FieldChangeType,
InitializeFieldsAction,
MoveFieldUpdateAction,
ReinstateObjectUpdatesAction,
RemoveFieldUpdateAction,
SelectVirtualMetadataAction,
@@ -27,9 +26,6 @@ import {
import { distinctUntilChanged, filter, map, switchMap } from 'rxjs/operators';
import { hasNoValue, hasValue, isEmpty, isNotEmpty } from '../../../shared/empty.util';
import { INotification } from '../../../shared/notifications/models/notification.model';
import { ArrayMoveChangeAnalyzer } from '../array-move-change-analyzer.service';
import { MoveOperation } from 'fast-json-patch/lib/core';
import { flatten } from '@angular/compiler';
function objectUpdatesStateSelector(): MemoizedSelector<CoreState, ObjectUpdatesState> {
return createSelector(coreSelector, (state: CoreState) => state['cache/object-updates']);
@@ -52,9 +48,7 @@ function virtualMetadataSourceSelector(url: string, source: string): MemoizedSel
*/
@Injectable()
export class ObjectUpdatesService {
constructor(private store: Store<CoreState>,
private comparator: ArrayMoveChangeAnalyzer<string>) {
constructor(private store: Store<CoreState>) {
}
/**
@@ -67,28 +61,6 @@ export class ObjectUpdatesService {
this.store.dispatch(new InitializeFieldsAction(url, fields, lastModified));
}
/**
* Method to dispatch an InitializeFieldsAction to the store and keeping track of the order objects are stored
* @param url The page's URL for which the changes are being mapped
* @param fields The initial fields for the page's object
* @param lastModified The date the object was last modified
* @param pageSize The page size to use for adding pages to the custom order
* @param page The first page to populate the custom order with
*/
initializeWithCustomOrder(url, fields: Identifiable[], lastModified: Date, pageSize = 9999, page = 0): void {
this.store.dispatch(new InitializeFieldsAction(url, fields, lastModified, fields.map((field) => field.uuid), pageSize, page));
}
/**
* Method to dispatch an AddPageToCustomOrderAction, adding a new page to an already existing custom order tracking
* @param url The URL for which the changes are being mapped
* @param fields The fields to add a new page for
* @param page The page number (starting from index 0)
*/
addPageToCustomOrder(url, fields: Identifiable[], page: number): void {
this.store.dispatch(new AddPageToCustomOrderAction(url, fields, fields.map((field) => field.uuid), page));
}
/**
* Method to dispatch an AddFieldUpdateAction to the store
* @param url The page's URL for which the changes are saved
@@ -166,31 +138,6 @@ export class ObjectUpdatesService {
}))
}
/**
* Method that combines the state's updates with the initial values (when there's no update),
* sorted by their custom order to create a FieldUpdates object
* @param url The URL of the page for which the FieldUpdates should be requested
* @param initialFields The initial values of the fields
* @param page The page to retrieve
*/
getFieldUpdatesByCustomOrder(url: string, initialFields: Identifiable[], page = 0): Observable<FieldUpdates> {
const objectUpdates = this.getObjectEntry(url);
return objectUpdates.pipe(map((objectEntry) => {
const fieldUpdates: FieldUpdates = {};
if (hasValue(objectEntry) && hasValue(objectEntry.customOrder) && isNotEmpty(objectEntry.customOrder.newOrderPages) && page < objectEntry.customOrder.newOrderPages.length) {
for (const uuid of objectEntry.customOrder.newOrderPages[page].order) {
let fieldUpdate = objectEntry.fieldUpdates[uuid];
if (isEmpty(fieldUpdate)) {
const identifiable = initialFields.find((object: Identifiable) => object.uuid === uuid);
fieldUpdate = {field: identifiable, changeType: undefined};
}
fieldUpdates[uuid] = fieldUpdate;
}
}
return fieldUpdates;
}))
}
/**
* Method to check if a specific field is currently editable in the store
* @param url The URL of the page on which the field resides
@@ -260,19 +207,6 @@ export class ObjectUpdatesService {
this.saveFieldUpdate(url, field, FieldChangeType.UPDATE);
}
/**
* Dispatches a MoveFieldUpdateAction
* @param url The page's URL for which the changes are saved
* @param from The index of the object to move
* @param to The index to move the object to
* @param fromPage The page to move the object from
* @param toPage The page to move the object to
* @param field Optional field to add to the fieldUpdates list (useful if we want to track updates across multiple pages)
*/
saveMoveFieldUpdate(url: string, from: number, to: number, fromPage = 0, toPage = 0, field?: Identifiable) {
this.store.dispatch(new MoveFieldUpdateAction(url, from, to, fromPage, toPage, field));
}
/**
* Check whether the virtual metadata of a given item is selected to be saved as real metadata
* @param url The URL of the page on which the field resides
@@ -387,7 +321,7 @@ export class ObjectUpdatesService {
* @param url The page's url to check for in the store
*/
hasUpdates(url: string): Observable<boolean> {
return this.getObjectEntry(url).pipe(map((objectEntry) => hasValue(objectEntry) && (isNotEmpty(objectEntry.fieldUpdates) || objectEntry.customOrder.changed)));
return this.getObjectEntry(url).pipe(map((objectEntry) => hasValue(objectEntry) && isNotEmpty(objectEntry.fieldUpdates)));
}
/**
@@ -405,19 +339,4 @@ export class ObjectUpdatesService {
getLastModified(url: string): Observable<Date> {
return this.getObjectEntry(url).pipe(map((entry: ObjectUpdatesEntry) => entry.lastModified));
}
/**
* Get move operations based on the custom order
* @param url The page's url
*/
getMoveOperations(url: string): Observable<MoveOperation[]> {
return this.getObjectEntry(url).pipe(
map((objectEntry) => objectEntry.customOrder),
map((customOrder) => this.comparator.diff(
flatten(customOrder.initialOrderPages.map((orderPage: OrderPage) => orderPage.order)),
flatten(customOrder.newOrderPages.map((orderPage: OrderPage) => orderPage.order)))
)
);
}
}

121
src/app/shared/pagination-drag-and-drop/abstract-paginated-drag-and-drop-list.component.ts
View File

@@ -5,19 +5,20 @@ import { PaginatedList } from '../../core/data/paginated-list';
import { PaginationComponentOptions } from '../pagination/pagination-component-options.model';
import { BehaviorSubject } from 'rxjs/internal/BehaviorSubject';
import { ObjectUpdatesService } from '../../core/data/object-updates/object-updates.service';
import { switchMap, take, tap } from 'rxjs/operators';
import { hasValue, isEmpty, isNotEmpty } from '../empty.util';
import { switchMap, take } from 'rxjs/operators';
import { hasValue } from '../empty.util';
import { paginatedListToArray } from '../../core/shared/operators';
import { DSpaceObject } from '../../core/shared/dspace-object.model';
import { CdkDragDrop } from '@angular/cdk/drag-drop';
import { ElementRef, ViewChild } from '@angular/core';
import { ElementRef, EventEmitter, Output, ViewChild } from '@angular/core';
import { PaginationComponent } from '../pagination/pagination.component';
/**
* An abstract component containing general methods and logic to be able to drag and drop objects within a paginated
* list. This implementation supports being able to drag and drop objects between pages.
* Dragging an object on top of a page number will automatically detect the page it's being dropped on, send an update
* to the store and add the object on top of that page.
* Dragging an object on top of a page number will automatically detect the page it's being dropped on and send a
* dropObject event to the parent component containing detailed information about the indexes the object was dropped from
* and to.
*
* To extend this component, it is important to make sure to:
* - Initialize objectsRD$ within the initializeObjectsRD() method
@@ -34,6 +35,13 @@ export abstract class AbstractPaginatedDragAndDropListComponent<T extends DSpace
*/
@ViewChild(PaginationComponent, {static: false}) paginationComponent: PaginationComponent;
/**
* Send an event when the user drops an object on the pagination
* The event contains details about the index the object came from and is dropped to (across the entirety of the list,
* not just within a single page)
*/
@Output() dropObject: EventEmitter<any> = new EventEmitter<any>();
/**
* The URL to use for accessing the object updates from this list
*/
@@ -52,7 +60,7 @@ export abstract class AbstractPaginatedDragAndDropListComponent<T extends DSpace
/**
* The amount of objects to display per page
*/
pageSize = 10;
pageSize = 2;
/**
* The page options to use for fetching the objects
@@ -69,22 +77,6 @@ export abstract class AbstractPaginatedDragAndDropListComponent<T extends DSpace
*/
currentPage$ = new BehaviorSubject<number>(1);
/**
* A list of pages that have been initialized in the field-update store
*/
initializedPages: number[] = [];
/**
* An object storing information about an update that should be fired whenever fireToUpdate is called
*/
toUpdate: {
fromIndex: number,
toIndex: number,
fromPage: number,
toPage: number,
field?: T
};
protected constructor(protected objectUpdatesService: ObjectUpdatesService,
protected elRef: ElementRef) {
}
@@ -110,28 +102,17 @@ export abstract class AbstractPaginatedDragAndDropListComponent<T extends DSpace
/**
* Initialize the field-updates in the store
* This method ensures (new) pages displayed are automatically added to the field-update store when the objectsRD updates
*/
initializeUpdates(): void {
this.objectsRD$.pipe(
paginatedListToArray(),
take(1)
).subscribe((objects: T[]) => {
this.objectUpdatesService.initialize(this.url, objects, new Date());
});
this.updates$ = this.objectsRD$.pipe(
paginatedListToArray(),
tap((objects: T[]) => {
// Pages in the field-update store are indexed starting at 0 (because they're stored in an array of pages)
const updatesPage = this.currentPage$.value - 1;
if (isEmpty(this.initializedPages)) {
// No updates have been initialized yet for this list, initialize the first page
this.objectUpdatesService.initializeWithCustomOrder(this.url, objects, new Date(), this.pageSize, updatesPage);
this.initializedPages.push(updatesPage);
} else if (this.initializedPages.indexOf(updatesPage) < 0) {
// Updates were initialized for this list, but not the page we're on. Add the current page to the field-update store for this list
this.objectUpdatesService.addPageToCustomOrder(this.url, objects, updatesPage);
this.initializedPages.push(updatesPage);
}
// The new page is loaded into the store, check if there are any updates waiting and fire those as well
this.fireToUpdate();
}),
switchMap((objects: T[]) => this.objectUpdatesService.getFieldUpdatesByCustomOrder(this.url, objects, this.currentPage$.value - 1))
switchMap((objects: T[]) => this.objectUpdatesService.getFieldUpdatesExclusive(this.url, objects))
);
}
@@ -144,52 +125,42 @@ export abstract class AbstractPaginatedDragAndDropListComponent<T extends DSpace
}
/**
* An object was moved, send updates to the store.
* An object was moved, send updates to the dropObject EventEmitter
* When the object is dropped on a page within the pagination of this component, the object moves to the top of that
* page and the pagination automatically loads and switches the view to that page.
* page and the pagination automatically loads and switches the view to that page (this is done by calling the event's
* finish() method after sending patch requests to the REST API)
* @param event
*/
drop(event: CdkDragDrop<any>) {
const dragIndex = event.previousIndex;
let dropIndex = event.currentIndex;
const dragPage = this.currentPage$.value - 1;
let dropPage = this.currentPage$.value - 1;
// Check if the user is hovering over any of the pagination's pages at the time of dropping the object
const droppedOnElement = this.elRef.nativeElement.querySelector('.page-item:hover');
if (hasValue(droppedOnElement) && hasValue(droppedOnElement.textContent)) {
// The user is hovering over a page, fetch the page's number from the element
const page = Number(droppedOnElement.textContent);
if (hasValue(page) && !Number.isNaN(page)) {
const id = event.item.element.nativeElement.id;
this.updates$.pipe(take(1)).subscribe((updates: FieldUpdates) => {
const field = hasValue(updates[id]) ? updates[id].field : undefined;
this.toUpdate = Object.assign({
fromIndex: event.previousIndex,
toIndex: 0,
fromPage: this.currentPage$.value - 1,
toPage: page - 1,
field
});
// Switch to the dropped-on page and force a page update for the pagination component
this.currentPage$.next(page);
this.paginationComponent.doPageChange(page);
if (this.initializedPages.indexOf(page - 1) >= 0) {
// The page the object is being dropped to has already been loaded before, directly fire an update to the store.
// For pages that haven't been loaded before, the updates$ observable will call fireToUpdate after the new page
// has loaded
this.fireToUpdate();
}
});
}
} else {
this.objectUpdatesService.saveMoveFieldUpdate(this.url, event.previousIndex, event.currentIndex, this.currentPage$.value - 1, this.currentPage$.value - 1);
const droppedPage = Number(droppedOnElement.textContent);
if (hasValue(droppedPage) && !Number.isNaN(droppedPage)) {
dropPage = droppedPage - 1;
dropIndex = 0;
}
}
/**
* Method checking if there's an update ready to be fired. Send out a MoveFieldUpdate to the store if there's an
* update present and clear the update afterwards.
*/
fireToUpdate() {
if (hasValue(this.toUpdate)) {
this.objectUpdatesService.saveMoveFieldUpdate(this.url, this.toUpdate.fromIndex, this.toUpdate.toIndex, this.toUpdate.fromPage, this.toUpdate.toPage, this.toUpdate.field);
this.toUpdate = undefined;
const redirectPage = dropPage + 1;
const fromIndex = (dragPage * this.pageSize) + dragIndex;
const toIndex = (dropPage * this.pageSize) + dropIndex;
// Send out a drop event when the field exists and the "from" and "to" indexes are different from each other
if (fromIndex !== toIndex) {
this.dropObject.emit(Object.assign({
fromIndex,
toIndex,
finish: () => {
this.currentPage$.next(redirectPage);
this.paginationComponent.doPageChange(redirectPage);
}
}));
}
}
}