gristlabs_grist-core/app/client/models/entities/ViewFieldRec.ts

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import {ColumnRec, DocModel, IRowModel, refListRecords, refRecord, ViewSectionRec} from 'app/client/models/DocModel';
import {formatterForRec} from 'app/client/models/entities/ColumnRec';
import * as modelUtil from 'app/client/models/modelUtil';
import {removeRule, RuleOwner} from 'app/client/models/RuleOwner';
import {Style} from 'app/client/models/Styles';
import {ViewFieldConfig} from 'app/client/models/ViewFieldConfig';
import * as UserType from 'app/client/widgets/UserType';
import {DocumentSettings} from 'app/common/DocumentSettings';
import {BaseFormatter} from 'app/common/ValueFormatter';
import {createParser} from 'app/common/ValueParser';
import * as ko from 'knockout';
// Represents a page entry in the tree of pages.
export interface ViewFieldRec extends IRowModel<"_grist_Views_section_field">, RuleOwner {
viewSection: ko.Computed<ViewSectionRec>;
widthDef: modelUtil.KoSaveableObservable<number>;
widthPx: ko.Computed<string>;
column: ko.Computed<ColumnRec>;
origCol: ko.Computed<ColumnRec>;
colId: ko.Computed<string>;
label: ko.Computed<string>;
description: modelUtil.KoSaveableObservable<string>;
// displayLabel displays label by default but switches to the more helpful colId whenever a
// formula field in the view is being edited.
displayLabel: modelUtil.KoSaveableObservable<string>;
// The field knows when we are editing a formula, so that all rows can reflect that.
editingFormula: ko.Computed<boolean>;
// CSS class to add to formula cells, incl. to show that we are editing field's formula.
formulaCssClass: ko.Computed<string|null>;
// The fields's display column
_displayColModel: ko.Computed<ColumnRec>;
// Whether field uses column's widgetOptions (true) or its own (false).
// During transform, use the transform column's options (which should be initialized to match
// field or column when the transform starts TODO).
useColOptions: ko.Computed<boolean>;
// Helper that returns the RowModel for either field or its column, depending on
// useColOptions. Field and Column have a few identical fields:
// .widgetOptions() // JSON string of options
// .saveDisplayFormula() // Method to save the display formula
// .displayCol() // Reference to an optional associated display column.
_fieldOrColumn: ko.Computed<ColumnRec|ViewFieldRec>;
// Display col ref to use for the field, defaulting to the plain column itself.
displayColRef: ko.Computed<number>;
visibleColRef: modelUtil.KoSaveableObservable<number>;
// The display column to use for the field, or the column itself when no displayCol is set.
displayColModel: ko.Computed<ColumnRec>;
visibleColModel: ko.Computed<ColumnRec>;
// The widgetOptions to read and write: either the column's or the field's own.
_widgetOptionsStr: modelUtil.KoSaveableObservable<string>;
// Observable for the object with the current options, either for the field or for the column,
// which takes into account the default options for column's type.
widgetOptionsJson: modelUtil.SaveableObjObservable<any>;
disableModify: ko.Computed<boolean>;
disableEditData: ko.Computed<boolean>;
// Whether lines should wrap in a cell.
wrap: modelUtil.KoSaveableObservable<boolean>;
widget: modelUtil.KoSaveableObservable<string|undefined>;
textColor: modelUtil.KoSaveableObservable<string|undefined>;
fillColor: modelUtil.KoSaveableObservable<string|undefined>;
fontBold: modelUtil.KoSaveableObservable<boolean|undefined>;
fontUnderline: modelUtil.KoSaveableObservable<boolean|undefined>;
fontItalic: modelUtil.KoSaveableObservable<boolean|undefined>;
fontStrikethrough: modelUtil.KoSaveableObservable<boolean|undefined>;
// Helper computed to change style of a cell without saving it.
style: ko.PureComputed<Style>;
config: ViewFieldConfig;
documentSettings: ko.PureComputed<DocumentSettings>;
// Helper for Reference/ReferenceList columns, which returns a formatter according
// to the visibleCol associated with field.
visibleColFormatter: ko.Computed<BaseFormatter>;
// A formatter for values of this column.
// The difference between visibleColFormatter and formatter is especially important for ReferenceLists:
// `visibleColFormatter` is for individual elements of a list, sometimes hypothetical
// (i.e. they aren't actually referenced but they exist in the visible column and are relevant to e.g. autocomplete)
// `formatter` formats actual cell values, e.g. a whole list from the display column.
formatter: ko.Computed<BaseFormatter>;
createValueParser(): (value: string) => any;
// Helper which adds/removes/updates field's displayCol to match the formula.
saveDisplayFormula(formula: string): Promise<void>|undefined;
}
export function createViewFieldRec(this: ViewFieldRec, docModel: DocModel): void {
this.viewSection = refRecord(docModel.viewSections, this.parentId);
this.widthDef = modelUtil.fieldWithDefault(this.width, () => this.viewSection().defaultWidth());
this.widthPx = ko.pureComputed(() => this.widthDef() + 'px');
this.column = refRecord(docModel.columns, this.colRef);
this.origCol = ko.pureComputed(() => this.column().origCol());
this.colId = ko.pureComputed(() => this.column().colId());
this.label = ko.pureComputed(() => this.column().label());
this.description = modelUtil.savingComputed({
read: () => this.column().description(),
write: (setter, val) => setter(this.column().description, val)
});
// displayLabel displays label by default but switches to the more helpful colId whenever a
// formula field in the view is being edited.
this.displayLabel = modelUtil.savingComputed({
read: () => docModel.editingFormula() ? '$' + this.origCol().colId() : this.origCol().label(),
write: (setter, val) => setter(this.column().label, val)
});
// The field knows when we are editing a formula, so that all rows can reflect that.
const _editingFormula = ko.observable(false);
this.editingFormula = ko.pureComputed({
read: () => _editingFormula(),
write: val => {
// Whenever any view field changes its editingFormula status, let the docModel know.
docModel.editingFormula(val);
_editingFormula(val);
}
});
// CSS class to add to formula cells, incl. to show that we are editing this field's formula.
this.formulaCssClass = ko.pureComputed<string|null>(() => {
const col = this.column();
// If the current column is transforming, assign the CSS class "transform_field"
if (col.isTransforming()) {
if ( col.origCol().isFormula() && col.origCol().formula() !== "") {
return "transform_field formula_field";
}
return "transform_field";
}
// If the column is not transforming but a formula is being edited
else if (this.editingFormula()) {
return "formula_field_edit";
}
// If a formula exists and it is not empty
else if (col.isFormula() && col.formula() !== "") {
return "formula_field";
}
// If none of the above conditions are met, assign null
else {
return null;
}
});
// The fields's display column
this._displayColModel = refRecord(docModel.columns, this.displayCol);
// Helper which adds/removes/updates this field's displayCol to match the formula.
this.saveDisplayFormula = function(formula) {
if (formula !== (this._displayColModel().formula() || '')) {
return docModel.docData.sendAction(["SetDisplayFormula", this.column().table().tableId(),
this.getRowId(), null, formula]);
}
};
// Whether this field uses column's widgetOptions (true) or its own (false).
// During transform, use the transform column's options (which should be initialized to match
// field or column when the transform starts TODO).
this.useColOptions = this.autoDispose(ko.pureComputed(() => !this.widgetOptions() || this.column().isTransforming()));
// Helper that returns the RowModel for either this field or its column, depending on
// useColOptions. Field and Column have a few identical fields:
// .widgetOptions() // JSON string of options
// .saveDisplayFormula() // Method to save the display formula
// .displayCol() // Reference to an optional associated display column.
this._fieldOrColumn = this.autoDispose(ko.pureComputed(() => this.useColOptions() ? this.column() : this));
// Display col ref to use for the field, defaulting to the plain column itself.
this.displayColRef = this.autoDispose(ko.pureComputed(() => this._fieldOrColumn().displayCol() || this.colRef()));
this.visibleColRef = modelUtil.addSaveInterface(ko.pureComputed({
read: () => this._fieldOrColumn().visibleCol(),
write: (colRef) => this._fieldOrColumn().visibleCol(colRef),
}),
colRef => docModel.docData.bundleActions(null, async () => {
const col = docModel.columns.getRowModel(colRef);
await Promise.all([
this._fieldOrColumn().visibleCol.saveOnly(colRef),
this._fieldOrColumn().saveDisplayFormula(colRef ? `$${this.colId()}.${col.colId()}` : '')
]);
}, {nestInActiveBundle: this.column.peek().isTransforming.peek()})
);
// The display column to use for the field, or the column itself when no displayCol is set.
this.displayColModel = refRecord(docModel.columns, this.displayColRef);
this.visibleColModel = refRecord(docModel.columns, this.visibleColRef);
// Helper for Reference/ReferenceList columns, which returns a formatter according to the visibleCol
// associated with this field. If no visible column available, return formatting for the field itself.
this.visibleColFormatter = ko.pureComputed(() => formatterForRec(this, this.column(), docModel, 'vcol'));
this.formatter = ko.pureComputed(() => formatterForRec(this, this.column(), docModel, 'full'));
this.createValueParser = function() {
const fieldRef = this.useColOptions.peek() ? undefined : this.id.peek();
const parser = createParser(docModel.docData, this.colRef.peek(), fieldRef);
return parser.cleanParse.bind(parser);
};
// The widgetOptions to read and write: either the column's or the field's own.
this._widgetOptionsStr = this.autoDispose(modelUtil.savingComputed({
read: () => this._fieldOrColumn().widgetOptions(),
write: (setter, val) => setter(this._fieldOrColumn().widgetOptions, val)
}));
// Observable for the object with the current options, either for the field or for the column,
// which takes into account the default options for this column's type.
this.widgetOptionsJson = this.autoDispose(modelUtil.jsonObservable(this._widgetOptionsStr,
(opts: any) => UserType.mergeOptions(opts || {}, this.column().pureType())));
// When user has yet to specify a desired wrapping state, we use different defaults for
// GridView (no wrap) and DetailView (wrap).
this.wrap = this.autoDispose(modelUtil.fieldWithDefault(
this.widgetOptionsJson.prop('wrap'),
() => this.viewSection().parentKey() !== 'record'
));
this.widget = this.widgetOptionsJson.prop('widget');
this.textColor = this.widgetOptionsJson.prop('textColor');
this.fillColor = this.widgetOptionsJson.prop('fillColor');
this.fontBold = this.widgetOptionsJson.prop('fontBold');
this.fontUnderline = this.widgetOptionsJson.prop('fontUnderline');
this.fontItalic = this.widgetOptionsJson.prop('fontItalic');
this.fontStrikethrough = this.widgetOptionsJson.prop('fontStrikethrough');
this.documentSettings = ko.pureComputed(() => docModel.docInfoRow.documentSettingsJson());
this.style = ko.pureComputed({
read: () => ({
textColor: this.textColor(),
fillColor: this.fillColor(),
fontBold: this.fontBold(),
fontUnderline: this.fontUnderline(),
fontItalic: this.fontItalic(),
fontStrikethrough: this.fontStrikethrough(),
}) as Style,
write: (style: Style) => {
this.widgetOptionsJson.update(style);
},
});
this.tableId = ko.pureComputed(() => this.column().table().tableId());
this.rulesCols = refListRecords(docModel.columns, ko.pureComputed(() => this._fieldOrColumn().rules()));
this.rulesColsIds = ko.pureComputed(() => this.rulesCols().map(c => c.colId()));
this.rulesStyles = modelUtil.fieldWithDefault(
this.widgetOptionsJson.prop("rulesOptions") as modelUtil.KoSaveableObservable<Style[]>,
[]);
this.hasRules = ko.pureComputed(() => this.rulesCols().length > 0);
// Helper method to add an empty rule (either initial or additional one).
// Style options are added to widget options directly and can be briefly out of sync,
// which is taken into account during rendering.
this.addEmptyRule = async () => {
const useCol = this.useColOptions.peek();
const action = [
'AddEmptyRule',
this.column.peek().table.peek().tableId.peek(),
useCol ? 0 : this.id.peek(), // field_ref
useCol ? this.column.peek().id.peek() : 0, // col_ref
];
await docModel.docData.sendAction(action, `Update rules for ${this.colId.peek()}`);
};
this.removeRule = (index: number) => removeRule(docModel, this, index);
// Externalize widgetOptions configuration, to support changing those options
// for multiple fields at once.
this.config = new ViewFieldConfig(this, docModel);
this.disableModify = this.autoDispose(ko.pureComputed(() => this.column().disableModify()));
this.disableEditData = this.autoDispose(ko.pureComputed(() => this.column().disableEditData()));
}