(core) Add cut, copy, and paste to context menu

Summary:
On supported browsers, the new context menu commands work exactly as they do
via keyboard shortcuts. On unsupported browsers, an unavailable command
modal is shown with a suggestion to use keyboard shortcuts instead.

Test Plan: Browser tests.

Reviewers: jarek

Reviewed By: jarek

Differential Revision: https://phab.getgrist.com/D3867

app/client/components/BaseView.js

@@ -22,7 +22,7 @@ const {ClientColumnGetters} = require('app/client/models/ClientColumnGetters');
 const {reportError, reportSuccess} = require('app/client/models/errors');
 const {urlState} = require('app/client/models/gristUrlState');
 const {SectionFilter} = require('app/client/models/SectionFilter');
-const {copyToClipboard} = require('app/client/lib/copyToClipboard');
+const {copyToClipboard} = require('app/client/lib/clipboardUtils');
 const {setTestState} = require('app/client/lib/testState');
 const {ExtraRows} = require('app/client/models/DataTableModelWithDiff');
 const {createFilterMenu} = require('app/client/ui/ColumnFilterMenu');
@@ -153,7 +153,7 @@ function BaseView(gristDoc, viewSectionModel, options) {
     return linking && linking.disableEditing();
   }));
 
-  this.isPreview = this.options.isPreview;
+  this.isPreview = this.options.isPreview ?? false;
 
   this.enableAddRow = this.autoDispose(ko.computed(() => this.options.addNewRow &&
     !this.viewSection.disableAddRemoveRows() && !this.disableEditing()));
@@ -602,6 +602,9 @@ BaseView.prototype._saveEditRowField = function(editRowModel, colName, value) {
  * @returns {pasteObj} - Paste object
  */
 BaseView.prototype.copy = function(selection) {
+  // Clear the previous copy selection, if any.
+  commands.allCommands.clearCopySelection.run();
+
   this.copySelection(selection);
 
   return {
@@ -617,6 +620,9 @@ BaseView.prototype.copy = function(selection) {
  * @returns {pasteObj} - Paste object
  */
 BaseView.prototype.cut = function(selection) {
+  // Clear the previous copy selection, if any.
+  commands.allCommands.clearCopySelection.run();
+
   this.copySelection(selection);
 
   return {

app/client/components/Clipboard.js

@@ -34,14 +34,23 @@
 
 /* global window, document */
 
-var {tsvDecode} = require('app/common/tsvFormat');
+var {getHumanKey, isMac} = require('app/client/components/commands');
+var {copyToClipboard, readDataFromClipboard} = require('app/client/lib/clipboardUtils');
 var {FocusLayer} = require('app/client/lib/FocusLayer');
+var {makeT} = require('app/client/lib/localization');
+
+var {tsvDecode} = require('app/common/tsvFormat');
+var {ShortcutKey, ShortcutKeyContent} = require('app/client/ui/ShortcutKey');
+var {confirmModal} = require('app/client/ui2018/modals');
+var {styled} = require('grainjs');
 
 var commands = require('./commands');
 var dom = require('../lib/dom');
 var Base = require('./Base');
 var tableUtil = require('../lib/tableUtil');
 
+const t = makeT('Clipboard');
+
 function Clipboard(app) {
   Base.call(this, null);
   this._app = app;
@@ -91,9 +100,17 @@ function Clipboard(app) {
   // The plaintext content of the cut callback. Used to verify that we are pasting the results
   // of the cut, rather than new data from outside.
   this._cutData = null;
+
+  this.autoDispose(commands.createGroup(Clipboard.commands, this, true));
 }
 Base.setBaseFor(Clipboard);
 
+Clipboard.commands = {
+  contextMenuCopy: function() { this._doContextMenuCopy(); },
+  contextMenuCut: function() { this._doContextMenuCut(); },
+  contextMenuPaste: function() { this._doContextMenuPaste(); },
+};
+
 /**
  * Internal helper fired on `copy` events. If a callback was registered from a component, calls the
  * callback to get selection data and puts it on the clipboard.
@@ -106,6 +123,12 @@ Clipboard.prototype._onCopy = function(elem, event) {
   this._setCBdata(pasteObj, event.originalEvent.clipboardData);
 };
 
+Clipboard.prototype._doContextMenuCopy = function() {
+  let pasteObj = commands.allCommands.copy.run();
+
+  this._copyToClipboard(pasteObj, 'copy');
+};
+
 Clipboard.prototype._onCut = function(elem, event) {
   event.preventDefault();
 
@@ -114,20 +137,63 @@ Clipboard.prototype._onCut = function(elem, event) {
   this._setCBdata(pasteObj, event.originalEvent.clipboardData);
 };
 
-Clipboard.prototype._setCBdata = function(pasteObj, clipboardData) {
+Clipboard.prototype._doContextMenuCut = function() {
+  let pasteObj = commands.allCommands.cut.run();
 
-  if (!pasteObj) {
+  this._copyToClipboard(pasteObj, 'cut');
+};
+
+Clipboard.prototype._setCBdata = function(pasteObj, clipboardData) {
+  if (!pasteObj) { return; }
+
+  const plainText = tableUtil.makePasteText(pasteObj.data, pasteObj.selection);
+  clipboardData.setData('text/plain', plainText);
+  const htmlText = tableUtil.makePasteHtml(pasteObj.data, pasteObj.selection);
+  clipboardData.setData('text/html', htmlText);
+
+  this._setCutCallback(pasteObj, plainText);
+};
+
+Clipboard.prototype._copyToClipboard = async function(pasteObj, action) {
+  if (!pasteObj) { return; }
+
+  const plainText = tableUtil.makePasteText(pasteObj.data, pasteObj.selection);
+  let data;
+  if (typeof ClipboardItem === 'function') {
+    const htmlText = tableUtil.makePasteHtml(pasteObj.data, pasteObj.selection);
+    // eslint-disable-next-line no-undef
+    data = new ClipboardItem({
+      // eslint-disable-next-line no-undef
+      'text/plain': new Blob([plainText], {type: 'text/plain'}),
+      // eslint-disable-next-line no-undef
+      'text/html': new Blob([htmlText], {type: 'text/html'}),
+    });
+  } else {
+    data = plainText;
+  }
+
+  try {
+    await copyToClipboard(data);
+  } catch {
+    showUnavailableMenuCommandModal(action);
     return;
   }
 
-  let plainText = tableUtil.makePasteText(pasteObj.data, pasteObj.selection);
+  this._setCutCallback(pasteObj, plainText);
-  clipboardData.setData('text/plain', plainText);
+};
-  let htmlText = tableUtil.makePasteHtml(pasteObj.data, pasteObj.selection);
-  clipboardData.setData('text/html', htmlText);
 
+/**
+ * Sets the cut callback from the `pasteObj` if one exists. Otherwise clears the
+ * cut callback.
+ *
+ * The callback is called on paste, and only if the pasted data matches the `cutData`
+ * that was cut from within Grist. The callback handles removal of the data that was
+ * cut.
+ */
+Clipboard.prototype._setCutCallback = function(pasteObj, cutData) {
   if (pasteObj.cutCallback) {
     this._cutCallback = pasteObj.cutCallback;
-    this._cutData = plainText;
+    this._cutData = cutData;
   } else {
     this._cutCallback = null;
     this._cutData = null;
@@ -140,36 +206,11 @@ Clipboard.prototype._setCBdata = function(pasteObj, clipboardData) {
  */
 Clipboard.prototype._onPaste = function(elem, event) {
   event.preventDefault();
-  let cb = event.originalEvent.clipboardData;
+  const cb = event.originalEvent.clipboardData;
-  let plainText = cb.getData('text/plain');
+  const plainText = cb.getData('text/plain');
-  let htmlText = cb.getData('text/html');
+  const htmlText = cb.getData('text/html');
-  let data;
+  const pasteData = getPasteData(plainText, htmlText);
-
+  this._doPaste(pasteData, plainText);
-  // Grist stores both text/html and text/plain when copying data. When pasting back, we first
-  // check if text/html exists (should exist for Grist and other spreadsheet software), and fall
-  // back to text/plain otherwise.
-  try {
-    data = tableUtil.parsePasteHtml(htmlText);
-  } catch (e) {
-    if (plainText === '' || plainText.charCodeAt(0) === 0xFEFF) {
-      data = [['']];
-    } else {
-      data = tsvDecode(plainText.replace(/\r\n?/g, "\n").trimEnd());
-    }
-  }
-
-  if (this._cutData === plainText) {
-    if (this._cutCallback) {
-      // Cuts should only be possible on the first paste after a cut and only if the data being
-      // pasted matches the data that was cut.
-      commands.allCommands.paste.run(data, this._cutCallback);
-    }
-  } else {
-    this._cutData = null;
-    commands.allCommands.paste.run(data, null);
-  }
-  // The cut callback should only be usable once so it needs to be cleared after every paste.
-  this._cutCallback = null;
 };
 
 var FOCUS_TARGET_TAGS = {
@@ -179,6 +220,72 @@ var FOCUS_TARGET_TAGS = {
   'IFRAME': true,
 };
 
+Clipboard.prototype._doContextMenuPaste = async function() {
+  let clipboardItem;
+  try {
+    clipboardItem = (await readDataFromClipboard())?.[0];
+  } catch {
+    showUnavailableMenuCommandModal('paste');
+    return;
+  }
+  const plainText = await getTextFromClipboardItem(clipboardItem, 'text/plain');
+  const htmlText = await getTextFromClipboardItem(clipboardItem, 'text/html');
+  const pasteData = getPasteData(plainText, htmlText);
+  this._doPaste(pasteData, plainText);
+};
+
+Clipboard.prototype._doPaste = function(pasteData, plainText) {
+  console.log(this._cutData, plainText, this._cutCallback);
+  if (this._cutData === plainText) {
+    if (this._cutCallback) {
+      // Cuts should only be possible on the first paste after a cut and only if the data being
+      // pasted matches the data that was cut.
+      commands.allCommands.paste.run(pasteData, this._cutCallback);
+    }
+  } else {
+    this._cutData = null;
+    commands.allCommands.paste.run(pasteData, null);
+  }
+  // The cut callback should only be usable once so it needs to be cleared after every paste.
+  this._cutCallback = null;
+}
+
+/**
+ * Returns data formatted as a 2D array of strings, suitable for pasting within Grist.
+ *
+ * Grist stores both text/html and text/plain when copying data. When pasting back, we first
+ * check if text/html exists (should exist for Grist and other spreadsheet software), and fall
+ * back to text/plain otherwise.
+ */
+function getPasteData(plainText, htmlText) {
+  try {
+    return tableUtil.parsePasteHtml(htmlText);
+  } catch (e) {
+    if (plainText === '' || plainText.charCodeAt(0) === 0xFEFF) {
+      return [['']];
+    } else {
+      return tsvDecode(plainText.replace(/\r\n?/g, "\n").trimEnd());
+    }
+  }
+}
+
+/**
+ * Returns clipboard data of the given `type` from `clipboardItem` as text.
+ *
+ * Returns an empty string if `clipboardItem` is nullish or no data exists
+ * for the given `type`.
+ */
+async function getTextFromClipboardItem(clipboardItem, type) {
+  if (!clipboardItem) { return ''; }
+
+  try {
+    return (await clipboardItem.getType(type)).text();
+  } catch {
+    // No clipboard data exists for the MIME type.
+    return '';
+  }
+}
+
 /**
  * Helper to determine if the currently active element deserves to keep its own focus, and capture
  * copy-paste events. Besides inputs and textareas, any element can be marked to be a valid
@@ -192,4 +299,48 @@ function allowFocus(elem) {
 
 Clipboard.allowFocus = allowFocus;
 
+function showUnavailableMenuCommandModal(action) {
+  let keys;
+  switch (action) {
+    case 'cut': {
+      keys = 'Mod+X'
+      break;
+    }
+    case 'copy': {
+      keys = 'Mod+C'
+      break;
+    }
+    case 'paste': {
+      keys = 'Mod+V'
+      break;
+    }
+    default: {
+      throw new Error(`Clipboard: unrecognized action ${action}`);
+    }
+  }
+
+  confirmModal(
+    t("Unavailable Command"),
+    t("Got it"),
+    () => {},
+    {
+      explanation: cssModalContent(
+        t(
+          'The {{action}} menu command is not available in this browser. You can still {{action}}' +
+          ' by using the keyboard shortcut {{shortcut}}.',
+          {
+            action,
+            shortcut: ShortcutKey(ShortcutKeyContent(getHumanKey(keys, isMac))),
+          }
+        ),
+      ),
+      hideCancel: true,
+    },
+  );
+}
+
 module.exports = Clipboard;
+
+const cssModalContent = styled('div', `
+  line-height: 18px;
+`);

app/client/components/DataTables.ts

@@ -1,5 +1,5 @@
 import {GristDoc} from 'app/client/components/GristDoc';
-import {copyToClipboard} from 'app/client/lib/copyToClipboard';
+import {copyToClipboard} from 'app/client/lib/clipboardUtils';
 import {setTestState} from 'app/client/lib/testState';
 import {TableRec} from 'app/client/models/DocModel';
 import {docListHeader, docMenuTrigger} from 'app/client/ui/DocMenuCss';

app/client/components/DetailView.js

@@ -11,9 +11,12 @@ require('app/client/lib/koUtil'); // Needed for subscribeInit.
 
 const Base          = require('./Base');
 const BaseView      = require('./BaseView');
+const selector      = require('./CellSelector');
 const {CopySelection} = require('./CopySelection');
 const RecordLayout  = require('./RecordLayout');
 const commands      = require('./commands');
+const tableUtil     = require('../lib/tableUtil');
+const {FieldContextMenu} = require('../ui/FieldContextMenu');
 const {RowContextMenu} = require('../ui/RowContextMenu');
 const {parsePasteForView} = require("./BaseView2");
 const {columnInfoTooltip} = require("../ui/tooltips");
@@ -25,6 +28,8 @@ const {columnInfoTooltip} = require("../ui/tooltips");
 function DetailView(gristDoc, viewSectionModel) {
   BaseView.call(this, gristDoc, viewSectionModel, { 'addNewRow': true });
 
+  this.cellSelector = selector.CellSelector.create(this, this);
+
   this.viewFields = gristDoc.docModel.viewFields;
   this._isSingle = (this.viewSection.parentKey.peek() === 'single');
 
@@ -33,7 +38,8 @@ function DetailView(gristDoc, viewSectionModel) {
   this.recordLayout = this.autoDispose(RecordLayout.create({
     viewSection: this.viewSection,
     buildFieldDom: this.buildFieldDom.bind(this),
-    buildContextMenu : this.buildContextMenu.bind(this),
+    buildRowContextMenu : this.buildRowContextMenu.bind(this),
+    buildFieldContextMenu : this.buildFieldContextMenu.bind(this),
     resizeCallback: () => {
       if (!this._isSingle) {
         this.scrolly().updateSize();
@@ -109,8 +115,10 @@ function DetailView(gristDoc, viewSectionModel) {
   //--------------------------------------------------
   // Instantiate CommandGroups for the different modes.
   this.autoDispose(commands.createGroup(DetailView.generalCommands, this, this.viewSection.hasFocus));
-  this.newFieldCommandGroup = this.autoDispose(
+  this.autoDispose(commands.createGroup(DetailView.fieldCommands, this, this.viewSection.hasFocus));
-    commands.createGroup(DetailView.newFieldCommands, this, this.isNewFieldActive));
+  const hasSelection = this.autoDispose(ko.pureComputed(() =>
+    !this.cellSelector.isCurrentSelectType('') || this.copySelection()));
+  this.autoDispose(commands.createGroup(DetailView.selectionCommands, this, hasSelection));
 }
 Base.setBaseFor(DetailView);
 _.extend(DetailView.prototype, BaseView.prototype);
@@ -151,7 +159,17 @@ DetailView.generalCommands = {
       this.scrolly().scrollRowIntoView(this.cursor.rowIndex());
     }
     this.recordLayout.editLayout(this.cursor.rowIndex());
-  }
+  },
+};
+
+DetailView.fieldCommands = {
+  clearCardFields: function() { this._clearCardFields(); },
+  hideCardFields: function() { this._hideCardFields(); },
+};
+
+DetailView.selectionCommands = {
+  clearCopySelection: function() { this._clearCopySelection(); },
+  cancel: function() { this._clearSelection(); }
 };
 
 //----------------------------------------------------------------------
@@ -205,7 +223,7 @@ DetailView.prototype.paste = async function(data, cutCallback) {
       const addRowId = (action[0] === 'BulkAddRecord' ? results[0][0] : null);
       // Restore the cursor to the right rowId, even if it jumped.
       this.cursor.setCursorPos({rowId: cursorPos.rowId === 'new' ? addRowId : cursorPos.rowId});
-      this.copySelection(null);
+      commands.allCommands.clearCopySelection.run();
     });
 };
 
@@ -224,14 +242,15 @@ DetailView.prototype.getSelection = function() {
   );
 };
 
-DetailView.prototype.buildContextMenu = function(row, options) {
+DetailView.prototype.buildRowContextMenu = function(row) {
-  const defaults = {
+  const rowOptions = this._getRowContextMenuOptions(row);
-    disableInsert: Boolean(this.gristDoc.isReadonly.get() || this.viewSection.disableAddRemoveRows() || this.tableModel.tableMetaRow.onDemand()),
+  return RowContextMenu(rowOptions);
-    disableDelete: Boolean(this.gristDoc.isReadonly.get() || this.viewSection.disableAddRemoveRows() || row._isAddRow()),
+}
-    isViewSorted: this.viewSection.activeSortSpec.peek().length > 0,
+
-    numRows: this.getSelection().rowIds.length,
+DetailView.prototype.buildFieldContextMenu = function(row) {
-  };
+  const rowOptions = this._getRowContextMenuOptions(row);
-  return RowContextMenu(options ? Object.assign(defaults, options) : defaults);
+  const fieldOptions = this._getFieldContextMenuOptions();
+  return FieldContextMenu(rowOptions, fieldOptions);
 }
 
 /**
@@ -463,4 +482,61 @@ DetailView.prototype._canSingleClick = function(field) {
   return true;
 };
 
+DetailView.prototype._clearCardFields = function() {
+  const {isFormula} = this._getFieldContextMenuOptions();
+  if (isFormula === true) {
+    this.activateEditorAtCursor({init: ''});
+  } else {
+    const clearAction = tableUtil.makeDeleteAction(this.getSelection());
+    if (clearAction) {
+      this.gristDoc.docData.sendAction(clearAction);
+    }
+  }
+};
+
+DetailView.prototype._hideCardFields = function() {
+  const selection = this.getSelection();
+  const actions = selection.fields.map(field => ['RemoveRecord', field.id()]);
+  return this.gristDoc.docModel.viewFields.sendTableActions(
+    actions,
+    `Hide fields ${actions.map(a => a[1]).join(', ')} ` +
+      `from ${this.tableModel.tableData.tableId}.`
+  );
+}
+
+DetailView.prototype._clearSelection = function() {
+  this.copySelection(null);
+  this.cellSelector.setToCursor();
+};
+
+DetailView.prototype._clearCopySelection = function() {
+  this.copySelection(null);
+};
+
+DetailView.prototype._getRowContextMenuOptions = function(row) {
+  return {
+    disableInsert: Boolean(
+      this.gristDoc.isReadonly.get() ||
+      this.viewSection.disableAddRemoveRows() ||
+      this.tableModel.tableMetaRow.onDemand()
+    ),
+    disableDelete: Boolean(
+      this.gristDoc.isReadonly.get() ||
+      this.viewSection.disableAddRemoveRows() ||
+      row._isAddRow()
+    ),
+    isViewSorted: this.viewSection.activeSortSpec.peek().length > 0,
+    numRows: this.getSelection().rowIds.length,
+  };
+}
+
+DetailView.prototype._getFieldContextMenuOptions = function() {
+  const selection = this.getSelection();
+  return {
+    disableModify: Boolean(selection.fields[0]?.disableModify.peek()),
+    isReadonly: this.gristDoc.isReadonly.get() || this.isPreview,
+    isFormula: Boolean(selection.fields[0]?.column.peek().isRealFormula.peek()),
+  };
+}
+
 module.exports = DetailView;

app/client/components/GridView.js

@@ -277,6 +277,7 @@ _.extend(GridView.prototype, BaseView.prototype);
 // Moved out of all commands to support Raw Data Views (which use this command to close
 // the Grid popup).
 GridView.selectionCommands = {
+  clearCopySelection: function() { this._clearCopySelection(); },
   cancel: function() { this.clearSelection(); }
 }
 
@@ -455,7 +456,7 @@ GridView.prototype.paste = async function(data, cutCallback) {
           topRowIndex + outputHeight - 1, leftIndex + outputWidth - 1);
       }
 
-      this.copySelection(null);
+      commands.allCommands.clearCopySelection.run();
     });
   }
 };
@@ -1738,6 +1739,10 @@ GridView.prototype._duplicateRows = async function() {
   }
 }
 
+GridView.prototype._clearCopySelection = function() {
+  this.copySelection(null);
+};
+
 function buildStyleOption(owner, computedRule, optionName) {
   return ko.computed(() => {
     if (owner.isDisposed()) { return null; }

app/client/components/RecordLayout.js

@@ -54,7 +54,8 @@ const t = makeT('RecordLayout');
 function RecordLayout(options) {
   this.viewSection = options.viewSection;
   this.buildFieldDom = options.buildFieldDom;
-  this.buildContextMenu = options.buildContextMenu;
+  this.buildRowContextMenu = options.buildRowContextMenu;
+  this.buildFieldContextMenu = options.buildFieldContextMenu;
   this.isEditingLayout = ko.observable(false);
   this.editIndex = ko.observable(0);
   this.layoutEditor = ko.observable(null);    // RecordLayoutEditor when one is active.
@@ -340,8 +341,8 @@ RecordLayout.prototype.buildLayoutDom = function(row, optCreateEditor) {
       this.layoutEditor.peek().dispose();
       this.layoutEditor(null);
     }) : null,
-    // enables row context menu anywhere on the card
+    // enables field context menu anywhere on the card
-    contextMenu(() => this.buildContextMenu(row)),
+    contextMenu(() => this.buildFieldContextMenu(row)),
     dom('div.detail_row_num',
       kd.text(() => (row._index() + 1)),
       dom.on('contextmenu', ev => {
@@ -357,7 +358,7 @@ RecordLayout.prototype.buildLayoutDom = function(row, optCreateEditor) {
           this.viewSection.hasFocus(true);
           commands.allCommands.setCursor.run(row);
         }),
-        menu(() => this.buildContextMenu(row)),
+        menu(() => this.buildRowContextMenu(row)),
         testId('card-menu-trigger')
       )
     ),

app/client/components/SelectionSummary.ts

@@ -1,5 +1,5 @@
 import {CellSelector, COL, ROW} from 'app/client/components/CellSelector';
-import {copyToClipboard} from 'app/client/lib/copyToClipboard';
+import {copyToClipboard} from 'app/client/lib/clipboardUtils';
 import {Delay} from "app/client/lib/Delay";
 import {KoArray} from 'app/client/lib/koArray';
 import {ViewFieldRec} from 'app/client/models/entities/ViewFieldRec';

app/client/components/ViewConfigTab.js

@@ -99,19 +99,19 @@ ViewConfigTab.prototype._makeOnDemand = function(table) {
   }
 
   if (table.onDemand()) {
-    confirmModal('Unmark table On-Demand?', 'Unmark On-Demand', onConfirm,
+    confirmModal('Unmark table On-Demand?', 'Unmark On-Demand', onConfirm, {
-      dom('div', 'If you unmark table ', dom('b', table), ' as On-Demand, ' +
+      explanation: dom('div', 'If you unmark table ', dom('b', table), ' as On-Demand, ' +
         'its data will be loaded into the calculation engine and will be available ' +
         'for use in formulas. For a big table, this may greatly increase load times.',
-        dom('br'), dom('br'), 'Changing this setting will reload the document for all users.')
+        dom('br'), dom('br'), 'Changing this setting will reload the document for all users.'),
-    );
+    });
   } else {
-    confirmModal('Make table On-Demand?', 'Make On-Demand', onConfirm,
+    confirmModal('Make table On-Demand?', 'Make On-Demand', onConfirm, {
-      dom('div', 'If you make table ', dom('b', table), ' On-Demand, ' +
+      explanation: dom('div', 'If you make table ', dom('b', table), ' On-Demand, ' +
         'its data will no longer be loaded into the calculation engine and will not be available ' +
         'for use in formulas. It will remain available for viewing and editing.',
-        dom('br'), dom('br'), 'Changing this setting will reload the document for all users.')
+        dom('br'), dom('br'), 'Changing this setting will reload the document for all users.'),
-    );
+    });
   }
 };
 

app/client/components/commandList.ts

@@ -59,6 +59,9 @@ export type CommandName =
   | 'copy'
   | 'cut'
   | 'paste'
+  | 'contextMenuCopy'
+  | 'contextMenuCut'
+  | 'contextMenuPaste'
   | 'fillSelectionDown'
   | 'clearValues'
   | 'input'
@@ -80,9 +83,11 @@ export type CommandName =
   | 'insertFieldAfter'
   | 'renameField'
   | 'hideFields'
+  | 'hideCardFields'
   | 'toggleFreeze'
   | 'deleteFields'
   | 'clearColumns'
+  | 'clearCardFields'
   | 'convertFormulasToData'
   | 'addSection'
   | 'deleteSection'
@@ -102,6 +107,7 @@ export type CommandName =
   | 'clearLinks'
   | 'clearSectionLinks'
   | 'transformUpdate'
+  | 'clearCopySelection'
   ;
 
 
@@ -109,6 +115,7 @@ export interface CommandDef {
   name: CommandName;
   keys: string[];
   desc: string | null;
+  bindKeys?: boolean;
   deprecated?: boolean;
 }
 
@@ -367,6 +374,10 @@ export const groups: CommendGroupDef[] = [{
       name: 'copyLink',
       keys: ['Mod+Shift+A'],
       desc: 'Copy anchor link'
+    }, {
+      name: 'clearCopySelection',
+      keys: [],
+      desc: 'Clears the current copy selection, if any'
     }
   ],
 }, {
@@ -399,7 +410,22 @@ export const groups: CommendGroupDef[] = [{
     }, {
       name: 'paste',
       keys: [],
-      desc: 'Paste clipboard contents at cursor'
+      desc: 'Paste clipboard contents at cursor',
+    }, {
+      name: 'contextMenuCopy',
+      keys: ['Mod+C'],
+      desc: 'Copy current selection to clipboard',
+      bindKeys: false,
+    }, {
+      name: 'contextMenuCut',
+      keys: ['Mod+X'],
+      desc: 'Cut current selection to clipboard',
+      bindKeys: false,
+    }, {
+      name: 'contextMenuPaste',
+      keys: ['Mod+V'],
+      desc: 'Paste clipboard contents at cursor',
+      bindKeys: false,
     }, {
       name: 'fillSelectionDown',
       keys: ['Mod+D'],
@@ -489,6 +515,10 @@ export const groups: CommendGroupDef[] = [{
       name: 'hideFields',
       keys: ['Alt+Shift+-'],
       desc: 'Hide currently selected columns'
+    }, {
+      name: 'hideCardFields',
+      keys: [],
+      desc: 'Hide currently selected fields'
     }, {
       name: 'toggleFreeze',
       keys: [],
@@ -501,6 +531,10 @@ export const groups: CommendGroupDef[] = [{
       name: 'clearColumns',
       keys: [],
       desc: 'Clear the selected columns'
+    }, {
+      name: 'clearCardFields',
+      keys: [],
+      desc: 'Clear the selected fields'
     }, {
       name: 'convertFormulasToData',
       keys: [],

app/client/components/commands.ts

@@ -22,7 +22,7 @@ const G = getBrowserGlobals('window');
 type BoolLike = boolean|ko.Observable<boolean>|ko.Computed<boolean>;
 
 // Same logic as used by mousetrap to map 'Mod' key to platform-specific key.
-const isMac = (typeof navigator !== 'undefined' && navigator &&
+export const isMac = (typeof navigator !== 'undefined' && navigator &&
                /Mac|iPod|iPhone|iPad/.test(navigator.platform));
 
 /**
@@ -62,7 +62,10 @@ export function init(optCommandGroups?: CommendGroupDef[]) {
       if (allCommands[c.name]) {
         console.error("Ignoring duplicate command %s in commandList", c.name);
       } else {
-        allCommands[c.name] = new Command(c.name, c.desc, c.keys, c.deprecated);
+        allCommands[c.name] = new Command(c.name, c.desc, c.keys, {
+          bindKeys: c.bindKeys,
+          deprecated: c.deprecated,
+        });
       }
     });
   });
@@ -95,7 +98,7 @@ const KEY_MAP_WIN = {
   Down: '↓',
 };
 
-function getHumanKey(key: string, mac: boolean): string {
+export function getHumanKey(key: string, mac: boolean): string {
   const keyMap = mac ? KEY_MAP_MAC : KEY_MAP_WIN;
   let keys = key.split('+').map(s => s.trim());
   keys = keys.map(k => {
@@ -106,6 +109,11 @@ function getHumanKey(key: string, mac: boolean): string {
   return keys.join( mac ? '' : ' + ');
 }
 
+export interface CommandOptions {
+  bindKeys?: boolean;
+  deprecated?: boolean;
+}
+
 /**
  * Command represents a single command. It is exposed via the `allCommands` map.
  * @property {String} name: The name of the command, same as the key into the `allCommands` map.
@@ -119,21 +127,23 @@ export class Command implements CommandDef {
   public desc: string|null;
   public humanKeys: string[];
   public keys: string[];
+  public bindKeys: boolean;
   public isActive: ko.Observable<boolean>;
   public deprecated: boolean;
   public run: (...args: any[]) => any;
   private _implGroupStack: CommandGroup[] = [];
   private _activeFunc: (...args: any[]) => any = _.noop;
 
-  constructor(name: CommandName, desc: string|null, keys: string[], deprecated?: boolean) {
+  constructor(name: CommandName, desc: string|null, keys: string[], options: CommandOptions = {}) {
     this.name = name;
     this.desc = desc;
     this.humanKeys = keys.map(key => getHumanKey(key, isMac));
     this.keys = keys.map(function(k) { return k.trim().toLowerCase().replace(/ *\+ */g, '+'); });
+    this.bindKeys = options.bindKeys ?? true;
     this.isActive = ko.observable(false);
     this._implGroupStack = [];
     this._activeFunc = _.noop; // The function to run when this command is invoked.
-    this.deprecated = deprecated || false;
+    this.deprecated = options.deprecated || false;
     // Let .run bind the Command object, so that it can be used as a stand-alone callback.
     this.run = this._run.bind(this);
   }
@@ -192,6 +202,7 @@ export class Command implements CommandDef {
       this._activeFunc = _.noop;
     }
 
+    if (this.bindKeys) {
       // Now bind or unbind the affected key combinations.
       this.keys.forEach(function(key) {
         const keyGroups = _allKeys[key];
@@ -206,6 +217,7 @@ export class Command implements CommandDef {
         }
       });
     }
+  }
 
   private _run(...args: any[]) {
     return this._activeFunc(...args);

app/client/lib/clipboardUtils.ts

@@ -3,9 +3,20 @@ import {get as getBrowserGlobals} from 'app/client/lib/browserGlobals';
 const G = getBrowserGlobals('document', 'window');
 
 /**
- * Copy some text to the clipboard, by hook or by crook.
+ * Copy text or data to the clipboard.
  */
-export async function copyToClipboard(txt: string) {
+export async function copyToClipboard(data: string | ClipboardItem) {
+  if (typeof data === 'string') {
+    await copyTextToClipboard(data);
+  } else {
+    await copyDataToClipboard(data);
+  }
+}
+
+/**
+ * Copy text to the clipboard.
+ */
+async function copyTextToClipboard(txt: string) {
   // If present and we have permission to use it, the navigator.clipboard interface
   // is convenient.  This method works in non-headless tests, and regular chrome
   // and firefox.
@@ -36,3 +47,36 @@ export async function copyToClipboard(txt: string) {
     G.document.getSelection().addRange(selection);
   }
 }
+
+/**
+ * Copy data to the clipboard.
+ */
+async function copyDataToClipboard(data: ClipboardItem) {
+  if (!G.window.navigator?.clipboard?.write) {
+    throw new Error('navigator.clipboard.write is not supported on this browser');
+  }
+
+  await G.window.navigator.clipboard.write([data]);
+}
+
+/**
+ * Read text from the clipboard.
+ */
+export function readTextFromClipboard(): Promise<string> {
+  if (!G.window.navigator?.clipboard?.readText) {
+    throw new Error('navigator.clipboard.readText is not supported on this browser');
+  }
+
+  return G.window.navigator.clipboard.readText();
+}
+
+/**
+ * Read data from the clipboard.
+ */
+export function readDataFromClipboard(): Promise<ClipboardItem[]> {
+  if (!G.window.navigator?.clipboard?.read) {
+    throw new Error('navigator.clipboard.read is not supported on this browser');
+  }
+
+  return G.window.navigator.clipboard.read();
+}

app/client/ui/CellContextMenu.ts

@@ -32,9 +32,10 @@ export function CellContextMenu(rowOptions: IRowContextMenu, colOptions: IMultiC
   const result: Array<Element|null> = [];
 
   result.push(
-
+    menuItemCmd(allCommands.contextMenuCut, t('Cut'), disableForReadonlyColumn),
-    // TODO: implement copy/paste actions
+    menuItemCmd(allCommands.contextMenuCopy, t('Copy')),
-
+    menuItemCmd(allCommands.contextMenuPaste, t('Paste'), disableForReadonlyColumn),
+    menuDivider(),
     colOptions.isFormula ?
       null :
       menuItemCmd(allCommands.clearValues, nameClearCells, disableForReadonlyColumn),
@@ -46,7 +47,7 @@ export function CellContextMenu(rowOptions: IRowContextMenu, colOptions: IMultiC
         menuItemCmd(allCommands.copyLink, t("Copy anchor link")),
         menuDivider(),
         menuItemCmd(allCommands.filterByThisCellValue, t("Filter by this value")),
-        menuItemCmd(allCommands.openDiscussion, 'Comment', dom.cls('disabled', (
+        menuItemCmd(allCommands.openDiscussion, t('Comment'), dom.cls('disabled', (
          isReadonly || numRows === 0 || numCols === 0
         )), dom.hide(use => !use(COMMENTS()))) //TODO: i18next
       ]

app/client/ui/ColumnTitle.ts

@@ -1,6 +1,6 @@
 import * as Clipboard from 'app/client/components/Clipboard';
 import * as commands from 'app/client/components/commands';
-import {copyToClipboard} from 'app/client/lib/copyToClipboard';
+import {copyToClipboard} from 'app/client/lib/clipboardUtils';
 import {FocusLayer} from 'app/client/lib/FocusLayer';
 import {makeT} from 'app/client/lib/localization';
 import {setTestState} from 'app/client/lib/testState';

app/client/ui/DocumentSettings.ts

@@ -5,7 +5,7 @@
 import {GristDoc} from 'app/client/components/GristDoc';
 import {ACIndexImpl} from 'app/client/lib/ACIndex';
 import {ACSelectItem, buildACSelect} from 'app/client/lib/ACSelect';
-import {copyToClipboard} from 'app/client/lib/copyToClipboard';
+import {copyToClipboard} from 'app/client/lib/clipboardUtils';
 import {makeT} from 'app/client/lib/localization';
 import {reportError} from 'app/client/models/AppModel';
 import {urlState} from 'app/client/models/gristUrlState';

app/client/ui/FieldContextMenu.ts

@@ -0,0 +1,27 @@
+import {allCommands} from 'app/client/components/commands';
+import {makeT} from 'app/client/lib/localization';
+import {IRowContextMenu} from 'app/client/ui/RowContextMenu';
+import {menuDivider, menuItemCmd} from 'app/client/ui2018/menus';
+import {dom} from 'grainjs';
+
+const t = makeT('FieldContextMenu');
+
+export interface IFieldContextMenu {
+  disableModify: boolean;
+  isReadonly: boolean;
+}
+
+export function FieldContextMenu(_rowOptions: IRowContextMenu, fieldOptions: IFieldContextMenu) {
+  const {disableModify, isReadonly} = fieldOptions;
+  const disableForReadonlyColumn = dom.cls('disabled', disableModify || isReadonly);
+  return [
+    menuItemCmd(allCommands.contextMenuCut, t('Cut'), disableForReadonlyColumn),
+    menuItemCmd(allCommands.contextMenuCopy, t('Copy')),
+    menuItemCmd(allCommands.contextMenuPaste, t('Paste'), disableForReadonlyColumn),
+    menuDivider(),
+    menuItemCmd(allCommands.clearCardFields, t('Clear field'), disableForReadonlyColumn),
+    menuItemCmd(allCommands.hideCardFields, t('Hide field')),
+    menuDivider(),
+    menuItemCmd(allCommands.copyLink, t('Copy anchor link')),
+  ];
+}

app/client/ui/UserManager.ts

@@ -14,7 +14,7 @@ import {Computed, Disposable, dom, DomElementArg, Observable, observable, styled
 import pick = require('lodash/pick');
 
 import {ACIndexImpl, normalizeText} from 'app/client/lib/ACIndex';
-import {copyToClipboard} from 'app/client/lib/copyToClipboard';
+import {copyToClipboard} from 'app/client/lib/clipboardUtils';
 import {setTestState} from 'app/client/lib/testState';
 import {buildMultiUserManagerModal} from 'app/client/lib/MultiUserManager';
 import {ACUserItem, buildACMemberEmail} from 'app/client/lib/ACUserManager';

test/nbrowser/testUtils.ts

@@ -33,7 +33,21 @@ setOptionsModifyFunc(({chromeOpts, firefoxOpts}) => {
     // Don't show popups to save passwords, which are shown when running against a deployment when
     // we use a login form.
     "credentials_enable_service": false,
-    "profile.password_manager_enabled" : false,
+    "profile": {
+      content_settings: {
+        exceptions: {
+          clipboard: {
+            '*': {
+              // Grant access to the system clipboard. This applies to regular (non-headless)
+              // Chrome. On headless Chrome, this has no effect.
+              setting: 1,
+            }
+          },
+        },
+      },
+      // Don't show popups to save passwords.
+      password_manager_enabled: false,
+    },
 
     // These preferences are my best effort to set up "print to pdf" that saves into the test's temp
     // dir, based on discussion here: https://bugs.chromium.org/p/chromedriver/issues/detail?id=2821.