gristlabs_grist-core/app/client/models/ViewFieldConfig.ts

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import * as modelUtil from 'app/client/models/modelUtil';
// This is circular import, but only for types so it's fine.
import type {DocModel, ViewFieldRec} from 'app/client/models/DocModel';
import * as UserType from 'app/client/widgets/UserType';
import {ifNotSet} from 'app/common/gutil';
import * as ko from 'knockout';
import intersection from "lodash/intersection";
import isEqual from "lodash/isEqual";
import zip from 'lodash/zip';
export class ViewFieldConfig {
/** If there are multiple columns selected in the viewSection */
public multiselect: ko.Computed<boolean>;
/** If all selected columns have the same widget list. */
public sameWidgets: ko.Computed<boolean>;
/** Widget options for a field or multiple fields. Doesn't contain style options */
public options: CommonOptions;
/** Style options for a field or multiple fields */
public style: ko.Computed<StyleOptions>;
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/** Header style options for a field or multiple fields */
public headerStyle: ko.Computed<StyleOptions>;
// Rest of the options mimic the same options from ViewFieldRec.
public wrap: modelUtil.KoSaveableObservable<boolean|undefined>;
public widget: ko.Computed<string|undefined>;
public alignment: modelUtil.KoSaveableObservable<string|undefined>;
public fields: ko.PureComputed<ViewFieldRec[]>;
constructor(private _field: ViewFieldRec, private _docModel: DocModel) {
// Everything here will belong to a _field, this class is just a builder.
const owner = _field;
// Get all selected fields from the viewSection, if there is only one field
// selected (or the selection is empty) return it in an array.
this.fields = owner.autoDispose(ko.pureComputed(() => {
const list = this._field.viewSection().selectedFields();
if (!list || !list.length) {
return [_field];
}
// Make extra sure that field and column is not disposed, most of the knockout
// based entities, don't dispose their computed observables. As we keep references
// for them, it can happen that some of them are disposed while we are still
// computing something (mainly when columns are removed or restored using undo).
return list.filter(f => !f.isDisposed() && !f.column().isDisposed());
}));
// Just a helper field to see if we have multiple selected columns or not.
this.multiselect = owner.autoDispose(ko.pureComputed(() => this.fields().length > 1));
// Calculate if all columns share the same allowed widget list (like for Numeric type
// we have normal TextBox and Spinner). This will be used to allow the user to change
// this type if such columns are selected.
this.sameWidgets = owner.autoDispose(ko.pureComputed(() => {
const list = this.fields();
// If we have only one field selected, list is always the same.
if (list.length <= 1) { return true; }
// Now get all widget list and calculate intersection of the Sets.
// Widget types are just strings defined in UserType.
const widgets = list.map(c =>
Object.keys(UserType.typeDefs[c.column().pureType()]?.widgets ?? {})
);
return intersection(...widgets).length === widgets[0]?.length;
}));
// Changing widget type is not trivial, as we need to carefully reset all
// widget options to their default values, and there is a nuance there.
this.widget = owner.autoDispose(ko.pureComputed({
read: () => {
// For single column, just return its widget type.
if (!this.multiselect()) {
return this._field.widget();
}
// If all have the same value, return it, otherwise
// return a default value for this option "undefined"
const values = this.fields().map(f => f.widget());
if (allSame(values)) {
return values[0];
} else {
return undefined;
}
},
write: (widget) => {
// Go through all the fields, and reset them all.
for(const field of this.fields.peek()) {
// Reset the entire JSON, so that all options revert to their defaults.
const previous = field.widgetOptionsJson.peek();
// We don't need to bundle anything (actions send in the same tick, are bundled
// by default).
field.widgetOptionsJson.setAndSave({
widget,
// Persists color settings across widgets (note: we cannot use `field.fillColor` to get the
// current value because it returns a default value for `undefined`. Same for `field.textColor`.
fillColor: previous.fillColor,
textColor: previous.textColor,
}).catch(reportError);
}
}
}));
// Calculate common options for all column types (and their widgets).
// We will use this, to know which options are allowed to be changed
// when multiple columns are selected.
const commonOptions = owner.autoDispose(ko.pureComputed(() => {
const fields = this.fields();
// Put all options of first widget in the Set, and then remove
// them one by one, if they are not present in other fields.
let options: Set<string>|null = null;
for(const field of fields) {
// First get the data, and prepare initial set.
const widget = field.widget() || '';
const widgetOptions = UserType.typeDefs[field.column().pureType()]?.widgets[widget]?.options;
if (!widgetOptions) { continue; }
if (!options) { options = new Set(Object.keys(widgetOptions)); }
else {
// And now remove options that are not common.
const newOptions = new Set(Object.keys(widgetOptions));
for(const key of options) {
if (!newOptions.has(key)) {
options.delete(key);
}
}
}
}
return options ?? new Set();
}));
// Prepare our "multi" widgetOptionsJson, that can read and save
// options for multiple columns.
const options = modelUtil.savingComputed({
read: () => {
// For one column, just proxy this to the field.
if (!this.multiselect()) {
return this._field.widgetOptionsJson();
}
// Assemble final json object.
const result: any = {};
// First get all widgetOption jsons from all columns/fields.
const optionList = this.fields().map(f => f.widgetOptionsJson());
// And fill only those that are common
const common = commonOptions();
for(const key of common) {
// Setting null means that this options is there, but has no value.
result[key] = null;
// If all columns have the same value, use it.
if (allSame(optionList.map(v => v[key]))) {
result[key] = optionList[0][key] ?? null;
}
}
return result;
},
write: (setter, value) => {
if (!this.multiselect.peek()) {
return setter(this._field.widgetOptionsJson, value);
}
// When the creator panel is saving widgetOptions, it will pass
// our virtual widgetObject, which has nulls for mixed values.
// If this option wasn't changed (set), we don't want to save it.
value = {...value};
for(const key of Object.keys(value)) {
if (value[key] === null) {
delete value[key];
}
}
// Now update all options, for all fields, by amending the options
// object from the field/column.
for(const item of this.fields.peek()) {
const previous = item.widgetOptionsJson.peek();
setter(item.widgetOptionsJson, {
...previous,
...value,
});
}
}
});
// We need some additional information about each property.
this.options = owner.autoDispose(extendObservable(modelUtil.objObservable(options), {
// Property is not supported by set of columns if it is not a common option.
disabled: prop => ko.pureComputed(() => !commonOptions().has(prop)),
// Property has mixed value, if not all options are the same.
mixed: prop => ko.pureComputed(() => !allSame(this.fields().map(f => f.widgetOptionsJson.prop(prop)()))),
// Property has empty value, if all options are empty (are null, undefined, empty Array or empty Object).
empty: prop => ko.pureComputed(() => allEmpty(this.fields().map(f => f.widgetOptionsJson.prop(prop)()))),
}));
// This is repeated logic for wrap property in viewFieldRec,
// every field has wrapping implicitly set to true on a card view.
this.wrap = modelUtil.fieldWithDefault(
this.options.prop('wrap'),
() => this._field.viewSection().parentKey() !== 'record'
);
this.alignment = this.options.prop('alignment');
// Style options are a bit different, as they are saved when style picker is disposed.
// By the time it happens, fields may have changed (since user might have clicked some other column).
// To support this use case we need to compute a snapshot of fields, and use it to save style. Style
// picker will be rebuild every time fields change, and it will have access to last selected fields
// when it will be disposed.
this.style = ko.pureComputed(() => {
const fields = this.fields();
const multiSelect = fields.length > 1;
const savableOptions = modelUtil.savingComputed({
read: () => {
// For one column, just proxy this to the field.
if (!multiSelect) {
return this._field.widgetOptionsJson();
}
// Assemble final json object.
const result: any = {};
// First get all widgetOption jsons from all columns/fields.
const optionList = fields.map(f => f.widgetOptionsJson());
// And fill only those that are common
for(const key of ['textColor', 'fillColor', 'fontBold',
'fontItalic', 'fontUnderline', 'fontStrikethrough']) {
// Setting null means that this options is there, but has no value.
result[key] = null;
// If all columns have the same value, use it.
if (allSame(optionList.map(v => v[key]))) {
result[key] = optionList[0][key] ?? null;
}
}
return result;
},
write: (setter, value) => {
if (!multiSelect) {
return setter(this._field.widgetOptionsJson, value);
}
// When the creator panel is saving widgetOptions, it will pass
// our virtual widgetObject, which has nulls for mixed values.
// If this option wasn't changed (set), we don't want to save it.
value = {...value};
for(const key of Object.keys(value)) {
if (value[key] === null) {
delete value[key];
}
}
// Now update all options, for all fields, by amending the options
// object from the field/column.
for(const item of fields) {
const previous = item.widgetOptionsJson.peek();
setter(item.widgetOptionsJson, {
...previous,
...value,
});
}
}
});
// Style picker needs to be able revert to previous value, if user cancels.
const state = fields.map(f => f.style.peek());
// We need some additional information about each property.
const result: StyleOptions = extendObservable(modelUtil.objObservable(savableOptions), {
// Property has mixed value, if not all options are the same.
mixed: prop => ko.pureComputed(() => !allSame(fields.map(f => f.widgetOptionsJson.prop(prop)()))),
// Property has empty value, if all options are empty (are null, undefined, empty Array or empty Object).
empty: prop => ko.pureComputed(() => allEmpty(fields.map(f => f.widgetOptionsJson.prop(prop)()))),
});
result.revert = () => { zip(fields, state).forEach(([f, s]) => f!.style(s!)); };
return result;
});
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this.headerStyle = ko.pureComputed(() => {
const fields = this.fields();
const multiSelect = fields.length > 1;
const savableOptions = modelUtil.savingComputed({
read: () => {
// For one column, just proxy this to the field.
if (!multiSelect) {
return this._field.widgetOptionsJson();
}
// Assemble final json object.
const result: any = {};
// First get all widgetOption jsons from all columns/fields.
const optionList = fields.map(f => f.widgetOptionsJson());
// And fill only those that are common
for(const key of ['headerTextColor', 'headerFillColor', 'headerFontBold',
'headerFontItalic', 'headerFontUnderline', 'headerFontStrikethrough']) {
// Setting null means that this options is there, but has no value.
result[key] = null;
// If all columns have the same value, use it.
if (allSame(optionList.map(v => v[key]))) {
result[key] = optionList[0][key] ?? null;
}
}
return result;
},
write: (setter, value) => {
if (!multiSelect) {
return setter(this._field.widgetOptionsJson, value);
}
// When the creator panel is saving widgetOptions, it will pass
// our virtual widgetObject, which has nulls for mixed values.
// If this option wasn't changed (set), we don't want to save it.
value = {...value};
for(const key of Object.keys(value)) {
if (value[key] === null) {
delete value[key];
}
}
// Now update all options, for all fields, by amending the options
// object from the field/column.
for(const item of fields) {
const previous = item.widgetOptionsJson.peek();
setter(item.widgetOptionsJson, {
...previous,
...value,
});
}
}
});
// Style picker needs to be able revert to previous value, if user cancels.
const state = fields.map(f => f.headerStyle.peek());
// We need some additional information about each property.
const result: StyleOptions = extendObservable(modelUtil.objObservable(savableOptions), {
// Property has mixed value, if not all options are the same.
mixed: prop => ko.pureComputed(() => !allSame(fields.map(f => f.widgetOptionsJson.prop(prop)()))),
// Property has empty value, if all options are empty (are null, undefined, empty Array or empty Object).
empty: prop => ko.pureComputed(() => allEmpty(fields.map(f => f.widgetOptionsJson.prop(prop)()))),
});
result.revert = () => { zip(fields, state).forEach(([f, s]) => f!.headerStyle(s!)); };
return result;
});
}
// Helper for Choice/ChoiceList columns, that saves widget options and renames values in a document
// in one bundle
public async updateChoices(renames: Record<string, string>, options: any){
const hasRenames = !!Object.entries(renames).length;
const tableId = this._field.column.peek().table.peek().tableId.peek();
if (this.multiselect.peek()) {
this._field.config.options.update(options);
const colIds = this.fields.peek().map(f => f.colId.peek());
return this._docModel.docData.bundleActions("Update choices configuration", () => Promise.all([
this._field.config.options.save(),
!hasRenames ? null : this._docModel.docData.sendActions(
colIds.map(colId => ["RenameChoices", tableId, colId, renames])
)
]));
} else {
const column = this._field.column.peek();
// In case this column is being transformed - using Apply Formula to Data, bundle the action
// together with the transformation.
const actionOptions = {nestInActiveBundle: column.isTransforming.peek()};
this._field.widgetOptionsJson.update(options);
return this._docModel.docData.bundleActions("Update choices configuration", () => Promise.all([
this._field.widgetOptionsJson.save(),
!hasRenames ? null
: this._docModel.docData.sendAction(["RenameChoices", tableId, column.colId.peek(), renames])
]), actionOptions);
}
}
}
/**
* Deeply checks that all elements in a list are equal. Equality is checked by first
* converting "empty like" elements to null and then deeply comparing the elements.
*/
function allSame(arr: any[]) {
if (arr.length <= 1) { return true; }
const first = ifNotSet(arr[0], null);
const same = arr.every(next => {
return isEqual(ifNotSet(next, null), first);
});
return same;
}
/**
* Checks if every item in a list is empty (empty like in empty string, null, undefined, empty Array or Object)
*/
function allEmpty(arr: any[]) {
if (arr.length === 0) { return true; }
return arr.every(item => ifNotSet(item, null) === null);
}
/**
* Extended version of widget options observable that contains information about mixed and empty values.
*/
type CommonOptions = modelUtil.SaveableObjObservable<any> & {
disabled(prop: string): ko.Computed<boolean>,
mixed(prop: string): ko.Computed<boolean>,
empty(prop: string): ko.Computed<boolean>,
}
/**
* Extended version of widget options observable that contains information about mixed and empty styles, and supports
* reverting to a previous value.
*/
type StyleOptions = modelUtil.SaveableObjObservable<any> & {
mixed(prop: string): ko.Computed<boolean>,
empty(prop: string): ko.Computed<boolean>,
revert(): void;
}
// This is helper that adds disabled computed to an ObjObservable, it follows
// the same pattern as `prop` helper.
function extendObservable(
obs: modelUtil.SaveableObjObservable<any>,
options: { [key: string]: (prop: string) => ko.PureComputed<boolean> }
) {
const result = obs as any;
for(const key of Object.keys(options)) {
const cacheKey = `__${key}`;
result[cacheKey] = new Map();
result[key] = (prop: string) => {
if (!result[cacheKey].has(prop)) {
result[cacheKey].set(prop, options[key](prop));
}
return result[cacheKey].get(prop);
};
}
return result;
}