Add text alignment to context menus

Signed-off-by: gjmooney <[email protected]>

Author: gjmooney

js/core/gridContextMenu.ts

@@ -112,6 +112,21 @@ export class FeatherGridContextMenu extends GridContextMenu {
         this._menu.addItem({
           type: 'separator',
         });
+        this._menu.addItem({
+          command: FeatherGridContextMenu.CommandID.AlignLeft,
+          args: args,
+        });
+        this._menu.addItem({
+          command: FeatherGridContextMenu.CommandID.AlignCenter,
+          args: args,
+        });
+        this._menu.addItem({
+          command: FeatherGridContextMenu.CommandID.AlignRight,
+          args: args,
+        });
+        this._menu.addItem({
+          type: 'separator',
+        });
         this._menu.addItem({
           command: FeatherGridContextMenu.CommandID.OpenFilterByConditionDialog,
           args: args,
@@ -255,6 +270,9 @@ export namespace FeatherGridContextMenu {
     SaveSelectionAsCsv = 'saveSelectionAsCsv',
     SaveAllAsCsv = 'saveAllAsCsv',
     ClearSelection = 'clearSelection',
+    AlignLeft = 'align:Left',
+    AlignCenter = 'align:Center',
+    AlignRight = 'align:Right',
   }
 
   /**

js/datagrid.ts

@@ -23,6 +23,7 @@ import {
   JupyterLuminoPanelWidget,
   // @ts-ignore needed for ipywidgetx 7.x compatibility
   JupyterPhosphorPanelWidget,
+  pack_models,
   resolvePromisesDict,
   unpack_models,
   WidgetModel,
@@ -35,9 +36,9 @@ import { ViewBasedJSONModel } from './core/viewbasedjsonmodel';
 import { MODULE_NAME, MODULE_VERSION } from './version';
 
 import { CellRendererModel, CellRendererView } from './cellrenderer';
+import { DataSource } from './datasource';
 import { FeatherGrid } from './feathergrid';
 import { Theme } from './utils';
-import { DataSource } from './datasource';
 
 // Import CSS
 import '../style/jupyter-widget.css';
@@ -371,7 +372,10 @@ export class DataGridModel extends DOMWidgetModel {
   static serializers: ISerializers = {
     ...DOMWidgetModel.serializers,
     transforms: { deserialize: unpack_models as any },
-    renderers: { deserialize: unpack_models as any },
+    renderers: {
+      deserialize: unpack_models as any,
+      serialize: pack_models as any,
+    },
     corner_renderer: { deserialize: unpack_models as any },
     default_renderer: { deserialize: unpack_models as any },
     header_renderer: { deserialize: unpack_models as any },
@@ -853,14 +857,14 @@ export class DataGridView extends DOMWidgetView {
 export {
   BarRendererModel,
   BarRendererView,
-  ImageRendererModel,
-  ImageRendererView,
+  HtmlRendererModel,
+  HtmlRendererView,
   HyperlinkRendererModel,
   HyperlinkRendererView,
+  ImageRendererModel,
+  ImageRendererView,
   TextRendererModel,
   TextRendererView,
-  HtmlRendererModel,
-  HtmlRendererView,
 } from './cellrenderer';
 export { VegaExprModel, VegaExprView } from './vegaexpr';
 

js/feathergrid.ts

@@ -18,9 +18,16 @@ import { ViewBasedJSONModel } from './core/viewbasedjsonmodel';
 import { KeyHandler } from './keyhandler';
 import { MouseHandler as FeatherGridMouseHandler } from './mousehandler';
 import { Theme } from './utils';
+import { MODULE_NAME, MODULE_VERSION } from './version';
 
 import { DataGridModel as BackBoneModel } from './datagrid';
 
+import {
+  DOMWidgetModel,
+  ISerializers,
+  unpack_models,
+} from '@jupyter-widgets/base';
+
 import '@lumino/default-theme/style/datagrid.css';
 import '../style/feathergrid.css';
 
@@ -107,6 +114,11 @@ const themeVariables: Map<string, string[]> = new Map([
 ]);
 
 export class FeatherGrid extends Widget {
+  static serializers: ISerializers = {
+    ...DOMWidgetModel.serializers,
+    renderers: { deserialize: unpack_models as any },
+  };
+
   constructor(options: DataGrid.IOptions = {}) {
     super();
     this.addClass('ipydatagrid-widget');
@@ -871,6 +883,55 @@ export class FeatherGrid extends Widget {
     });
   }
 
+  private async _createTextRendererWidget() {
+    const model = await this.backboneModel.widget_manager.new_widget({
+      model_name: 'TextRendererModel',
+      model_module: MODULE_NAME,
+      model_module_version: MODULE_VERSION,
+      view_name: 'TextRendererView',
+      view_module: MODULE_NAME,
+      view_module_version: MODULE_VERSION,
+    });
+    return model;
+  }
+
+  private async _updateTextAlignment(
+    columnName: string,
+    alignment: 'left' | 'center' | 'right',
+  ) {
+    const currentRenderers = this.backboneModel.get('renderers');
+    const defaultRenderer = this.backboneModel.get('default_renderer');
+    const currentRendererForColumn = currentRenderers[columnName];
+
+    // If there is a renderer for which we can set the alignment, set it
+    if (
+      currentRendererForColumn !== undefined &&
+      'horizontal_alignment' in currentRendererForColumn.attributes
+    ) {
+      currentRendererForColumn.set('horizontal_alignment', alignment);
+      currentRendererForColumn.save_changes();
+      return;
+    }
+
+    // Assuming it's using the default renderer, we create a new renderer and copy its attributes
+    // TODO create a renderer of the same type as the default renderer
+    const model = await this._createTextRendererWidget();
+    for (const attr in model.attributes) {
+      if (attr in defaultRenderer.attributes) {
+        model.set(attr, defaultRenderer.get(attr));
+      }
+    }
+    model.set('horizontal_alignment', alignment);
+    model.save_changes();
+
+    const updatedRenderers = { ...currentRenderers };
+    updatedRenderers[columnName] = model;
+
+    // TODO Find why this is not propagated to Python correctly
+    this.backboneModel.set('renderers', updatedRenderers);
+    this.backboneModel.save_changes();
+  }
+
   private _createCommandRegistry(): CommandRegistry {
     const commands = new CommandRegistry();
     commands.addCommand(FeatherGridContextMenu.CommandID.SortAscending, {
@@ -1034,6 +1095,48 @@ export class FeatherGrid extends Widget {
         this.grid.selectionModel?.clear();
       },
     });
+    commands.addCommand(FeatherGridContextMenu.CommandID.AlignLeft, {
+      label: 'Align Left',
+      mnemonic: -1,
+      execute: async (args) => {
+        const commandArgs = <FeatherGridContextMenu.CommandArgs>args;
+        const columnName: string = this.dataModel.metadata(
+          commandArgs.region,
+          commandArgs.rowIndex,
+          commandArgs.columnIndex,
+        )['name'];
+
+        await this._updateTextAlignment(columnName, 'left');
+      },
+    });
+    commands.addCommand(FeatherGridContextMenu.CommandID.AlignCenter, {
+      label: 'Align Center',
+      mnemonic: -1,
+      execute: async (args) => {
+        const commandArgs = <FeatherGridContextMenu.CommandArgs>args;
+        const columnName: string = this.dataModel.metadata(
+          commandArgs.region,
+          commandArgs.rowIndex,
+          commandArgs.columnIndex,
+        )['name'];
+
+        await this._updateTextAlignment(columnName, 'center');
+      },
+    });
+    commands.addCommand(FeatherGridContextMenu.CommandID.AlignRight, {
+      label: 'Align Right',
+      mnemonic: -1,
+      execute: async (args) => {
+        const commandArgs = <FeatherGridContextMenu.CommandArgs>args;
+        const columnName: string = this.dataModel.metadata(
+          commandArgs.region,
+          commandArgs.rowIndex,
+          commandArgs.columnIndex,
+        )['name'];
+
+        await this._updateTextAlignment(columnName, 'right');
+      },
+    });
 
     return commands;
   }