added button on hover for exposing fields to linear workflow ui

invokeai/frontend/web/src/features/nodes/components/flow/nodes/Invocation/fields/FieldLinearViewToggle.tsx

@@ -0,0 +1,74 @@
+import { IconButton } from '@invoke-ai/ui-library';
+import { createSelector } from '@reduxjs/toolkit';
+import { useAppDispatch, useAppSelector } from 'app/store/storeHooks';
+import {
+  selectWorkflowSlice,
+  workflowExposedFieldAdded,
+  workflowExposedFieldRemoved,
+} from 'features/nodes/store/workflowSlice';
+import { memo, useCallback, useMemo } from 'react';
+import { useTranslation } from 'react-i18next';
+import { PiMinusBold, PiPlusBold } from 'react-icons/pi';
+
+type Props = {
+  nodeId: string;
+  fieldName: string;
+  isHovered: boolean;
+};
+
+const FieldLinearViewToggle = ({ nodeId, fieldName, isHovered }: Props) => {
+  const dispatch = useAppDispatch();
+  const { t } = useTranslation();
+
+  const selectIsExposed = useMemo(
+    () =>
+      createSelector(selectWorkflowSlice, (workflow) => {
+        return Boolean(workflow.exposedFields.find((f) => f.nodeId === nodeId && f.fieldName === fieldName));
+      }),
+    [fieldName, nodeId]
+  );
+
+  const isExposed = useAppSelector(selectIsExposed);
+
+  const handleExposeField = useCallback(() => {
+    dispatch(workflowExposedFieldAdded({ nodeId, fieldName }));
+  }, [dispatch, fieldName, nodeId]);
+
+  const handleUnexposeField = useCallback(() => {
+    dispatch(workflowExposedFieldRemoved({ nodeId, fieldName }));
+  }, [dispatch, fieldName, nodeId]);
+
+  const ToggleButton = useMemo(() => {
+    if (!isHovered) {
+      return null;
+    } else if (!isExposed) {
+      return (
+        <IconButton
+          mx="2"
+          tooltip={t('nodes.addLinearView')}
+          aria-label={t('nodes.addLinearView')}
+          icon={<PiPlusBold />}
+          onClick={handleExposeField}
+          pointerEvents="auto"
+          size="xs"
+        />
+      );
+    } else if (isExposed) {
+      return (
+        <IconButton
+          mx="2"
+          tooltip={t('nodes.removeLinearView')}
+          aria-label={t('nodes.removeLinearView')}
+          icon={<PiMinusBold />}
+          onClick={handleUnexposeField}
+          pointerEvents="auto"
+          size="xs"
+        />
+      );
+    }
+  }, [isHovered, handleExposeField, handleUnexposeField, isExposed, t]);
+
+  return ToggleButton;
+};
+
+export default memo(FieldLinearViewToggle);

invokeai/frontend/web/src/features/nodes/components/flow/nodes/Invocation/fields/InputField.tsx

@@ -4,12 +4,13 @@ import { useDoesInputHaveValue } from 'features/nodes/hooks/useDoesInputHaveValu
 import { useFieldInputInstance } from 'features/nodes/hooks/useFieldInputInstance';
 import { useFieldInputTemplate } from 'features/nodes/hooks/useFieldInputTemplate';
 import type { PropsWithChildren } from 'react';
-import { memo, useMemo } from 'react';
+import { memo, useCallback, useMemo, useState } from 'react';
 import { useTranslation } from 'react-i18next';
 
 import EditableFieldTitle from './EditableFieldTitle';
 import FieldContextMenu from './FieldContextMenu';
 import FieldHandle from './FieldHandle';
+import FieldLinearViewToggle from './FieldLinearViewToggle';
 import InputFieldRenderer from './InputFieldRenderer';
 
 interface Props {
@@ -22,6 +23,7 @@ const InputField = ({ nodeId, fieldName }: Props) => {
   const fieldTemplate = useFieldInputTemplate(nodeId, fieldName);
   const fieldInstance = useFieldInputInstance(nodeId, fieldName);
   const doesFieldHaveValue = useDoesInputHaveValue(nodeId, fieldName);
+  const [isHovered, setIsHovered] = useState(false);
 
   const { isConnected, isConnectionInProgress, isConnectionStartField, connectionError, shouldDim } =
     useConnectionState({ nodeId, fieldName, kind: 'input' });
@@ -46,6 +48,14 @@ const InputField = ({ nodeId, fieldName }: Props) => {
     return false;
   }, [fieldTemplate, isConnected, doesFieldHaveValue]);
 
+  const handleMouseOver = useCallback(() => {
+    setIsHovered(true);
+  }, []);
+
+  const handleMouseOut = useCallback(() => {
+    setIsHovered(false);
+  }, []);
+
   if (!fieldTemplate || !fieldInstance) {
     return (
       <InputFieldWrapper shouldDim={shouldDim}>
@@ -87,17 +97,20 @@ const InputField = ({ nodeId, fieldName }: Props) => {
   return (
     <InputFieldWrapper shouldDim={shouldDim}>
       <FormControl isInvalid={isMissingInput} isDisabled={isConnected} orientation="vertical" px={2}>
-        <Flex flexDir="column" w="full" gap={1}>
+        <Flex flexDir="column" w="full" gap={1} onMouseEnter={handleMouseOver} onMouseLeave={handleMouseOut}>
           <FieldContextMenu nodeId={nodeId} fieldName={fieldName} kind="input">
             {(ref) => (
-              <EditableFieldTitle
-                ref={ref}
-                nodeId={nodeId}
-                fieldName={fieldName}
-                kind="input"
-                isMissingInput={isMissingInput}
-                withTooltip
-              />
+              <Flex>
+                <EditableFieldTitle
+                  ref={ref}
+                  nodeId={nodeId}
+                  fieldName={fieldName}
+                  kind="input"
+                  isMissingInput={isMissingInput}
+                  withTooltip
+                />
+                <FieldLinearViewToggle nodeId={nodeId} fieldName={fieldName} isHovered={isHovered} />
+              </Flex>
             )}
           </FieldContextMenu>
           <InputFieldRenderer nodeId={nodeId} fieldName={fieldName} />