为M3 Builder增加保存草稿的功能。

src/page-components/scheme/m3-scheme/Builder.module.css

@@ -23,6 +23,12 @@
       align-items: center;
       gap: var(--spacing-s);
     }
+    .button_row {
+      display: flex;
+      flex-direction: row;
+      align-items: center;
+      gap: var(--spacing-s);
+    }
     h5 {
       font-size: var(--font-size-m);
       line-height: 1.7em;

src/page-components/scheme/m3-scheme/Builder.tsx

@@ -2,8 +2,13 @@ import { includes, isEmpty, isNil } from 'lodash-es';
 import { useActionState, useCallback, useMemo, useState } from 'react';
 import { useColorFunction } from '../../../ColorFunctionContext';
 import { FloatColorPicker } from '../../../components/FloatColorPicker';
+import { NotificationType, useNotification } from '../../../components/Notifications';
 import { ScrollArea } from '../../../components/ScrollArea';
-import { MaterialDesign3Scheme, MaterialDesign3SchemeStorage } from '../../../material-3-scheme';
+import {
+  MaterialDesign3Scheme,
+  MaterialDesign3SchemeSource,
+  MaterialDesign3SchemeStorage,
+} from '../../../material-3-scheme';
 import { SchemeContent } from '../../../models';
 import { useUpdateScheme } from '../../../stores/schemes';
 import { mapToObject } from '../../../utls';
@@ -16,6 +21,7 @@ type M3SchemeBuilderProps = {
 };
 
 export function M3SchemeBuilder({ scheme, onBuildCompleted }: M3SchemeBuilderProps) {
+  const { showToast } = useNotification();
   const { colorFn } = useColorFunction();
   const updateScheme = useUpdateScheme(scheme.id);
   const originalColors = useMemo(() => {
@@ -36,40 +42,61 @@ export function M3SchemeBuilder({ scheme, onBuildCompleted }: M3SchemeBuilderPro
     [originalColors, newColors, deleted],
   );
 
+  const collectSchemeSource = (formData: FormData): MaterialDesign3SchemeSource => {
+    const sourceColor = formData.get('source') as string;
+    const errorColor = formData.get('error') as string;
+    const customColors: Record<string, string> = {};
+    for (const key of colorKeys) {
+      const name = formData.get(`name_${key}`) as string;
+      const color = formData.get(`color_${key}`) as string;
+      if (isNil(name) || isEmpty(name) || isNil(color) || isEmpty(color)) continue;
+      customColors[name] = color;
+    }
+
+    return {
+      source: isNil(sourceColor) || isEmpty(sourceColor) ? null : sourceColor,
+      error: isNil(errorColor) || isEmpty(errorColor) ? null : errorColor,
+      custom_colors: customColors,
+    };
+  };
+
+  const [, handleDraftAction] = useActionState<Map<string, string>, FormData>(
+    (_state, formData) => {
+      const errMsg = new Map<string, string>();
+      const collectedSource = collectSchemeSource(formData);
+
+      updateScheme((prev) => {
+        prev.schemeStorage.source = collectedSource;
+        return prev;
+      });
+
+      showToast(NotificationType.SUCCESS, 'Scheme draft saved!', 'tabler:device-floppy', 3000);
+
+      return errMsg;
+    },
+    new Map<string, string>(),
+  );
   const [errMsg, handleSubmitAction] = useActionState<Map<string, string>, FormData>(
     (_state, formData) => {
       const errMsg = new Map<string, string>();
 
       try {
-        const sourceColor = formData.get('source') as string;
-        if (isNil(sourceColor) || isEmpty(sourceColor)) {
+        const collectedSource = collectSchemeSource(formData);
+        if (isNil(collectedSource.source) || isEmpty(collectedSource.source)) {
           errMsg.set('source', 'Source color is required');
         }
-        const errorColor = formData.get('error') as string;
-        if (isNil(errorColor) || isEmpty(errorColor)) {
+        if (isNil(collectedSource.error) || isEmpty(collectedSource.error)) {
           errMsg.set('error', 'Error color is required');
         }
         if (!isEmpty(errMsg)) return errMsg;
 
-        const customColors: Record<string, string> = {};
-        for (const key of colorKeys) {
-          const name = formData.get(`name_${key}`) as string;
-          const color = formData.get(`color_${key}`) as string;
-          if (isNil(name) || isEmpty(name) || isNil(color) || isEmpty(color)) continue;
-          customColors[name] = color;
-        }
-
         const generatedScheme = colorFn?.generate_material_design_3_scheme(
-          sourceColor,
-          errorColor,
-          customColors,
+          collectedSource.source,
+          collectedSource.error,
+          collectedSource.custom_colors,
         );
         updateScheme((prev) => {
-          prev.schemeStorage.source = {
-            source: sourceColor as string,
-            error: errorColor as string,
-            custom_colors: customColors,
-          };
+          prev.schemeStorage.source = collectedSource;
           prev.schemeStorage.scheme = {
             white: generatedScheme[0].white,
             black: generatedScheme[0].black,
@@ -155,10 +182,13 @@ export function M3SchemeBuilder({ scheme, onBuildCompleted }: M3SchemeBuilderPro
               onDelete={(index) => setDeleted((prev) => [...prev, index])}
             />
           ))}
-        <div style={{ gridColumn: '2 / span 2' }}>
+        <div className={styles.button_row} style={{ gridColumn: '2 / span 2' }}>
           <button type="submit" className="primary">
             Build Scheme
           </button>
+          <button type="submit" className="secondary" formAction={handleDraftAction}>
+            Save Draft
+          </button>
         </div>
       </form>
     </ScrollArea>