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import {
deleteCellMetadata,
setCellMetadata,
getCellMetadata,
getPanelMetadata,
} from '@deathbeds/jupyterlab-fonts/lib/labcompat';
import { VDomModel, VDomRenderer } from '@jupyterlab/apputils';
import { Cell, ICellModel } from '@jupyterlab/cells';
import { INotebookTools, NotebookTools } from '@jupyterlab/notebook';
import { JSONExt } from '@lumino/coreutils';
import { PanelLayout } from '@lumino/widgets';
import React from 'react';
import { ICONS } from '../icons';
import {
CSS,
ICellDeckMetadata,
ID,
IDeckManager,
IStylePreset,
LAYER_SCOPES,
LAYER_TITLES,
META,
TLayerScope,
} from '../tokens';
type __ = IDeckManager['__'];
export class NotebookMetaTools extends NotebookTools.Tool {
constructor(options: NotebookMetaTools.IOptions) {
super();
const layout = new PanelLayout();
this._model = new DeckCellEditor.Model(options);
this._notebookTools = options.notebookTools;
layout.addWidget(new DeckCellEditor(this._model));
this.layout = layout;
this.addClass(CSS.metaTool);
}
protected onActiveCellChanged(): void {
this._model.activeCell = this._notebookTools.activeCell;
}
protected onActiveCellMetadataChanged(): void {
this._model.update();
}
protected _model: DeckCellEditor.Model;
protected _notebookTools: INotebookTools;
}
export namespace NotebookMetaTools {
export interface IOptions {
manager: IDeckManager;
notebookTools: INotebookTools;
}
}
export class DeckCellEditor extends VDomRenderer<DeckCellEditor.Model> {
protected render(): JSX.Element {
const m = this.model;
const { activeMeta, manager } = m;
const { __ } = manager;
const layer = activeMeta?.layer || '-';
return (
<div>
{this.layerTool(layer, __)}
{this.presetTool(__)}
</div>
);
}
presetTool(__: __) {
return (
<div className={CSS.toolPreset}>
<label
title={__('Choose from pre-defined style templates.')}
htmlFor={ID.layerSelect}
>
{__('Slide Style')}
<ICONS.deckStart.react tag="span" width={16} />
</label>
<div className={CSS.selectSplit}>
<div className={CSS.selectWrapper}>
<select
className={CSS.styled}
value={this.model.selectedPreset}
onChange={this.model.onPresetSelect}
id={ID.presetSelect}
>
{this.presetOptions(__)}
</select>
</div>
<button
className={`${CSS.styled} ${CSS.apply}`}
onClick={this.model.applyPreset}
>
{__('Add Style')}
</button>
</div>
</div>
);
}
layerTool(layer: TLayerScope | '-', __: __) {
return (
<div className={CSS.toolLayer}>
<label
title={__('Display this cell as an out-of-order layer.')}
htmlFor={ID.layerSelect}
>
{__('Layer')}
<ICONS.deckStart.react tag="span" width={16} />
<div className={CSS.selectWrapper}>
<select
className={CSS.styled}
value={layer}
onChange={this.model.onLayerChange}
id={ID.layerSelect}
>
{this.layerOptions(__)}
</select>
</div>
</label>
</div>
);
}
presetOptions(__: __): JSX.Element[] {
// todo: get options from... elsewhere
const presetOptions: JSX.Element[] = [
<option key="-" value="">
-
</option>,
];
for (const preset of this.model.stylePresets) {
presetOptions.push(
<option value={preset.key} key={preset.key}>
{__(preset.label)}
</option>,
);
}
return presetOptions;
}
layerOptions(__: __): JSX.Element[] {
const layerOptions: JSX.Element[] = [];
for (const [layerValue, layerTitle] of Object.entries(LAYER_TITLES)) {
layerOptions.push(
<option value={layerValue} key={layerValue} title={__(layerTitle)}>
{__(layerValue)}
</option>,
);
}
return layerOptions;
}
}
export namespace DeckCellEditor {
export class Model extends VDomModel {
constructor(options: NotebookMetaTools.IOptions) {
super();
this._manager = options.manager;
this._notebookTools = options.notebookTools;
}
update() {
this._activeMeta =
(this._activeCell?.model
? (getCellMetadata(this._activeCell?.model, META.deck) as ICellDeckMetadata)
: null) || JSONExt.emptyObject;
this.stateChanged.emit(void 0);
}
onLayerChange = (change: React.ChangeEvent<HTMLSelectElement>) => {
const { _activeCell } = this;
/* istanbul ignore if */
if (!_activeCell) {
return;
}
let layer = change.target.value;
let newMeta = { ...this._activeMeta } || {};
if (layer === '-') {
delete newMeta.layer;
this._setDeckMetadata(newMeta, _activeCell);
} else if (LAYER_SCOPES.includes(layer as any)) {
newMeta.layer = layer as TLayerScope;
this._setDeckMetadata(newMeta, _activeCell);
}
};
applyPreset = () => {
Iif (!this._activeCell || !this._selectedPreset) {
return;
}
let meta = {
...((getCellMetadata(this._activeCell.model, META.fonts) ||
JSONExt.emptyObject) as ISettings),
};
for (const preset of this._manager.stylePresets) {
if (preset.key != this._selectedPreset) {
continue;
}
if (!meta['styles']) {
meta['styles'] = {};
}
let metaStyles = meta['styles'] as any;
if (!metaStyles[META.nullSelector]) {
metaStyles[META.nullSelector] = {};
}
let metaNull = metaStyles[META.nullSelector] as any;
if (!metaNull[META.presentingCell]) {
metaNull[META.presentingCell] = {};
}
let presenting = metaNull[META.presentingCell];
for (let [key, value] of Object.entries(preset.styles)) {
presenting[key] = value;
}
deleteCellMetadata(this._activeCell.model, META.fonts);
setCellMetadata(this._activeCell.model, META.fonts, meta);
this.forceStyle();
this._notebookTools.update();
return;
}
};
forceStyle() {
let panel = this._notebookTools.activeNotebookPanel;
Iif (!panel) {
return;
}
let stylist = (this._manager.fonts as any)._stylist as Stylist;
let meta =
(panel.model ? getPanelMetadata(panel.model, META.fonts) : null) ||
JSONExt.emptyObject;
stylist.stylesheet(meta as ISettings, panel);
}
get selectedPreset() {
return this._selectedPreset;
}
get stylePresets(): IStylePreset[] {
return this._manager.stylePresets;
}
onPresetSelect = (change: React.ChangeEvent<HTMLSelectElement>) => {
this._selectedPreset = change.target.value;
this.stateChanged.emit(void 0);
};
protected _setDeckMetadata(newMeta: ICellDeckMetadata, cell: Cell<ICellModel>) {
if (Object.keys(newMeta).length) {
setCellMetadata(cell.model, META.deck, newMeta);
} else {
deleteCellMetadata(cell.model, META.deck);
}
}
get manager() {
return this._manager;
}
set activeCell(activeCell: Cell<ICellModel> | null) {
if (this._activeCell === activeCell) {
return;
}
this._activeCell = activeCell;
this.update();
}
get activeMeta() {
return this._activeMeta;
}
private _manager: IDeckManager;
private _activeCell: Cell<ICellModel> | null = null;
private _activeMeta: ICellDeckMetadata | null = null;
private _selectedPreset: string = '';
private _notebookTools: INotebookTools;
}
}
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