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70 lines
3.1 KiB
70 lines
3.1 KiB
import {BoxSpec} from 'app/client/components/Layout';
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import {KoArray} from 'app/client/lib/koArray';
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import * as koUtil from 'app/client/lib/koUtil';
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import {DocModel, IRowModel, recordSet, refRecord} from 'app/client/models/DocModel';
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import {TabBarRec, ViewSectionRec} from 'app/client/models/DocModel';
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import * as modelUtil from 'app/client/models/modelUtil';
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import * as ko from 'knockout';
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// Represents a view (now also referred to as a "page") containing one or more view sections.
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export interface ViewRec extends IRowModel<"_grist_Views"> {
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viewSections: ko.Computed<KoArray<ViewSectionRec>>;
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tabBarItem: ko.Computed<KoArray<TabBarRec>>;
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layoutSpecObj: modelUtil.SaveableObjObservable<BoxSpec>;
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// An observable for the ref of the section last selected by the user.
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activeSectionId: ko.Computed<number>;
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// This is active collapsed section id. Set when the widget is clicked.
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activeCollapsedSectionId: ko.Observable<number>;
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// Saved collapsed sections.
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collapsedSections: ko.Computed<number[]>;
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// Active collapsed sections, changed by the user, can be different from the
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// saved collapsed sections, for a brief moment (editor is buffering changes).
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activeCollapsedSections: ko.Observable<number[]>;
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activeSection: ko.Computed<ViewSectionRec>;
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// If the active section is removed, set the next active section to be the default.
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_isActiveSectionGone: ko.Computed<boolean>;
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}
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export function createViewRec(this: ViewRec, docModel: DocModel): void {
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this.viewSections = recordSet(this, docModel.viewSections, 'parentId');
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this.tabBarItem = recordSet(this, docModel.tabBar, 'viewRef');
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this.layoutSpecObj = modelUtil.jsonObservable(this.layoutSpec);
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// An observable for the ref of the section last selected by the user.
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this.activeSectionId = koUtil.observableWithDefault(ko.observable(), () => {
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// The default function which is used when the conditional case is true.
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// Read may occur for recently disposed sections, must check condition first.
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return !this.isDisposed() &&
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// `!this.getRowId()` implies that this is an empty (non-existent) view record
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// which happens when viewing the raw data tables, in which case the default is no active view section.
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this.getRowId() && this.viewSections().all().length > 0 ? this.viewSections().at(0)!.getRowId() : 0;
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});
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this.activeSection = refRecord(docModel.viewSections, this.activeSectionId);
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this.activeCollapsedSectionId = ko.observable(0);
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this.collapsedSections = this.autoDispose(ko.pureComputed(() => {
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const allSections = new Set(this.viewSections().all().map(x => x.id()));
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const collapsed: number[] = (this.layoutSpecObj().collapsed || []).map(x => x.leaf as number);
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return collapsed.filter(x => allSections.has(x));
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}));
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this.activeCollapsedSections = ko.observable(this.collapsedSections.peek());
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// If the active section is removed, set the next active section to be the default.
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this._isActiveSectionGone = this.autoDispose(ko.computed(() => this.activeSection()._isDeleted()));
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this.autoDispose(this._isActiveSectionGone.subscribe(gone => {
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if (gone) {
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this.activeSectionId(0);
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}
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}));
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}
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