gristlabs_grist-core/app/client/widgets/NewAbstractWidget.ts

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/**
* NewAbstractWidget is equivalent to AbstractWidget for outside code, but is in typescript, and
* so is friendlier and clearer to derive TypeScript classes from.
*/
import {DocComm} from 'app/client/components/DocComm';
import {DocData} from 'app/client/models/DocData';
import {ViewFieldRec} from 'app/client/models/entities/ViewFieldRec';
import {SaveableObjObservable} from 'app/client/models/modelUtil';
import {cssLabel, cssRow} from 'app/client/ui/RightPanel';
import {colorSelect} from 'app/client/ui2018/ColorSelect';
import {BaseFormatter, createFormatter} from 'app/common/ValueFormatter';
import {Computed, Disposable, DomContents, fromKo, Observable} from 'grainjs';
import * as ko from 'knockout';
export interface Options {
// A hex value to set the default widget text color. Default to '#000000' if omitted.
defaultTextColor?: string;
}
/**
* NewAbstractWidget - The base of the inheritance tree for widgets.
* @param {Function} field - The RowModel for this view field.
*/
export abstract class NewAbstractWidget extends Disposable {
/**
* Override the create() method to match the parameters of create() expected by FieldBuilder.
*/
public static create(field: ViewFieldRec) {
return Disposable.create.call(this as any, null, field);
}
protected options: SaveableObjObservable<any>;
protected valueFormatter: Observable<BaseFormatter>;
protected textColor: Observable<string>;
protected fillColor: Observable<string>;
constructor(protected field: ViewFieldRec, opts: Options = {}) {
super();
const {defaultTextColor = '#000000'} = opts;
this.options = field.widgetOptionsJson;
this.textColor = Computed.create(this, (use) => (
use(this.field.textColor) || defaultTextColor
)).onWrite((val) => this.field.textColor(val === defaultTextColor ? undefined : val));
this.fillColor = fromKo(this.field.fillColor);
// Note that its easier to create a knockout computed from the several knockout observables,
// but then we turn it into a grainjs observable.
const formatter = this.autoDispose(ko.computed(() =>
createFormatter(field.displayColModel().type(), this.options())));
this.valueFormatter = fromKo(formatter);
}
/**
* Builds the DOM showing configuration buttons and fields in the sidebar.
*/
public buildConfigDom(): DomContents { return null; }
/**
* Builds the transform prompt config DOM in the few cases where it is necessary.
* Child classes need not override this function if they do not require transform config options.
*/
public buildTransformConfigDom(): DomContents { return null; }
public buildColorConfigDom(): Element[] {
return [
cssLabel('CELL COLOR'),
cssRow(
colorSelect(
this.textColor,
this.fillColor,
// Calling `field.widgetOptionsJson.save()` saves both fill and text color settings.
() => this.field.widgetOptionsJson.save()
)
)
];
}
/**
* Builds the data cell DOM.
* @param {DataRowModel} row - The rowModel object.
*/
public abstract buildDom(row: any): Element;
/**
* Returns the DocData object to which this field belongs.
*/
protected _getDocData(): DocData {
// TODO: There should be a better way to access docData and docComm, or better yet GristDoc.
return this.field._table.tableData.docData;
}
/**
* Returns the docComm object for communicating with the server.
*/
protected _getDocComm(): DocComm { return this._getDocData().docComm; }
}