为Swatch Builder增加保存草稿的功能。

src/page-components/scheme/m2-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/m2-scheme/Builder.tsx

@@ -2,8 +2,12 @@ import { includes, isEmpty, isNil, merge } 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 { MaterialDesign2SchemeStorage } from '../../../material-2-scheme';
+import {
+  MaterialDesign2SchemeSource,
+  MaterialDesign2SchemeStorage,
+} from '../../../material-2-scheme';
 import { SchemeContent } from '../../../models';
 import { useUpdateScheme } from '../../../stores/schemes';
 import { mapToObject } from '../../../utls';
@@ -16,6 +20,7 @@ type M2SchemeBuilderProps = {
 };
 
 export function M2SchemeBuilder({ scheme, onBuildComplete }: M2SchemeBuilderProps) {
+  const { showToast } = useNotification();
   const { colorFn } = useColorFunction();
   const updateScheme = useUpdateScheme(scheme.id);
   const originalColors = useMemo(() => {
@@ -35,45 +40,67 @@ export function M2SchemeBuilder({ scheme, onBuildComplete }: M2SchemeBuilderProp
         .filter((c) => !includes(deleted, c)),
     [originalColors, newColors, deleted],
   );
+  const colectSchemeSource = (formData: FormData): MaterialDesign2SchemeSource => {
+    const primaryColor = formData.get('primary') as string;
+    const secondaryColor = formData.get('secondary') 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 {
+      primary: isNil(primaryColor) || isEmpty(primaryColor) ? null : primaryColor,
+      secondary: isNil(secondaryColor) || isEmpty(secondaryColor) ? null : secondaryColor,
+      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 = colectSchemeSource(formData);
+      updateScheme((prev) => {
+        prev.schemeStorage.source = collectedSource;
+        return prev;
+      });
+      setNewColors([]);
+
+      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 primaryColor = formData.get('primary') as string;
+        const collected = colectSchemeSource(formData);
-        if (isNil(primaryColor) || isEmpty(primaryColor)) {
+        if (isNil(collected.primary) || isEmpty(collected.primary)) {
           errMsg.set('primary', 'Primary color is required');
         }
-        const secondaryColor = formData.get('secondary') as string;
+        if (isNil(collected.secondary) || isEmpty(collected.secondary)) {
-        if (isNil(secondaryColor) || isEmpty(secondaryColor)) {
           errMsg.set('secondary', 'Secondary color is required');
         }
-        const errorColor = formData.get('error') as string;
+        if (isNil(collected.error) || isEmpty(collected.error)) {
-        if (isNil(errorColor) || isEmpty(errorColor)) {
           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_2_scheme(
-          primaryColor,
+          collected.primary,
-          secondaryColor,
+          collected.secondary,
-          errorColor,
+          collected.error,
-          customColors,
+          collected.custom_colors,
         );
         updateScheme((prev) => {
-          prev.schemeStorage.source = {
+          prev.schemeStorage.source = collected;
-            primary: primaryColor,
-            secondary: secondaryColor,
-            error: errorColor,
-            custom_colors: customColors,
-          };
           prev.schemeStorage.scheme = merge(generatedScheme[0], {
             light: { custom_colors: mapToObject(generatedScheme[0].light.custom_colors) },
             dark: { custom_colors: mapToObject(generatedScheme[0].dark.custom_colors) },
@@ -168,10 +195,13 @@ export function M2SchemeBuilder({ scheme, onBuildComplete }: M2SchemeBuilderProp
               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>

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

@@ -29,6 +29,12 @@
       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-dynamic-scheme/Builder.tsx

@@ -2,10 +2,14 @@ import { includes, isEmpty, isEqual, 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 { Switch } from '../../../components/Switch';
 import { VSegmentedControl } from '../../../components/VSegmentedControl';
-import { MaterialDesign3DynamicSchemeStorage } from '../../../material-3-scheme';
+import {
+  MaterialDesign3DynamicSchemeSource,
+  MaterialDesign3DynamicSchemeStorage,
+} from '../../../material-3-scheme';
 import { Option, SchemeContent } from '../../../models';
 import { useUpdateScheme } from '../../../stores/schemes';
 import { mapToObject } from '../../../utls';
@@ -18,6 +22,7 @@ type M3DynamicSchemeBuilderProps = {
 };
 
 export function M3DynamicSchemeBuilder({ scheme, onBuildCompleted }: M3DynamicSchemeBuilderProps) {
+  const { showToast } = useNotification();
   const { colorFn } = useColorFunction();
   const updateScheme = useUpdateScheme(scheme.id);
   const originalColors = useMemo(() => {
@@ -49,47 +54,69 @@ export function M3DynamicSchemeBuilder({ scheme, onBuildCompleted }: M3DynamicSc
   const [contrastLevel, setContrastLevel] = useState<number>(
     () => scheme.schemeStorage.source?.contrastLevel ?? 1,
   );
+  const collectSchemeSource = (formData: FormData): MaterialDesign3DynamicSchemeSource => {
+    const sourceColor = formData.get('source') as string;
+    const dynamicVariant = Number(formData.get('variant'));
+    const contrast = Number(formData.get('contrast_level'));
+    const harmonizeCustoms = isEqual(formData.get('harmonize_customs'), 'true');
+    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,
+      variant: dynamicVariant,
+      contrastLevel: contrast,
+      harmonizeCustoms: harmonizeCustoms,
+    };
+  };
+
+  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;
+      });
+      setNewColors([]);
+
+      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>();
 
-      const sourceColor = formData.get('source') as string;
+      const collectedSource = collectSchemeSource(formData);
-      if (isNil(sourceColor) || isEmpty(sourceColor)) {
+      if (isNil(collectedSource.source) || isEmpty(collectedSource.source)) {
         errMsg.set('source', 'Source color is required');
       }
       if (!isEmpty(errMsg)) return errMsg;
 
       try {
-        const dynamicVariant = Number(formData.get('variant'));
-        const contrast = Number(formData.get('contrast_level'));
-        const harmonizeCustoms = isEqual(formData.get('harmonize_customs'), 'true');
-        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;
-        }
-
         const generate_scheme = colorFn.generate_material_design_3_dynamic_scheme(
-          sourceColor,
+          collectedSource.source,
-          isNil(errorColor) || isEmpty(errorColor) ? null : errorColor,
+          collectedSource.error,
-          dynamicVariant,
+          collectedSource.variant,
-          contrastLevel,
+          collectedSource.contrastLevel,
-          harmonizeCustoms,
+          collectedSource.harmonizeCustoms,
-          customColors,
+          collectedSource.custom_colors,
         );
         updateScheme((prev) => {
-          prev.schemeStorage.source = {
+          prev.schemeStorage.source = collectedSource;
-            source: sourceColor,
-            error: errorColor,
-            custom_colors: customColors,
-            variant: dynamicVariant,
-            contrastLevel: contrast,
-            harmonizeCustoms: harmonizeCustoms,
-          };
           prev.schemeStorage.scheme = {
             white: generate_scheme[0].white,
             black: generate_scheme[0].black,
@@ -204,10 +231,13 @@ export function M3DynamicSchemeBuilder({ scheme, onBuildCompleted }: M3DynamicSc
               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>

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 +42,62 @@ 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;
+      });
+      setNewColors([]);
+
+      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;
+        const collectedSource = collectSchemeSource(formData);
-        if (isNil(sourceColor) || isEmpty(sourceColor)) {
+        if (isNil(collectedSource.source) || isEmpty(collectedSource.source)) {
           errMsg.set('source', 'Source color is required');
         }
-        const errorColor = formData.get('error') as string;
+        if (isNil(collectedSource.error) || isEmpty(collectedSource.error)) {
-        if (isNil(errorColor) || isEmpty(errorColor)) {
           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,
+          collectedSource.source,
-          errorColor,
+          collectedSource.error,
-          customColors,
+          collectedSource.custom_colors,
         );
         updateScheme((prev) => {
-          prev.schemeStorage.source = {
+          prev.schemeStorage.source = collectedSource;
-            source: sourceColor as string,
-            error: errorColor as string,
-            custom_colors: customColors,
-          };
           prev.schemeStorage.scheme = {
             white: generatedScheme[0].white,
             black: generatedScheme[0].black,
@@ -155,10 +183,13 @@ 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>

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

@@ -30,6 +30,12 @@
     .parameter_input {
       max-width: 8em;
     }
+    .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/swatch-scheme/Builder.tsx

@@ -2,6 +2,7 @@ import { ColorShifting, SwatchEntry, SwatchSchemeSetting } from 'color-module';
 import { includes, isEmpty, isEqual, isNaN } from 'lodash-es';
 import { useActionState, useCallback, useMemo, useState } from 'react';
 import { useColorFunction } from '../../../ColorFunctionContext';
+import { NotificationType, useNotification } from '../../../components/Notifications';
 import { ScrollArea } from '../../../components/ScrollArea';
 import { Switch } from '../../../components/Switch';
 import { SchemeContent } from '../../../models';
@@ -10,6 +11,7 @@ import {
   QSwatchEntry,
   QSwatchSchemeSetting,
   SwatchScheme,
+  SwatchSchemeSource,
   SwatchSchemeStorage,
 } from '../../../swatch_scheme';
 import { mapToObject } from '../../../utls';
@@ -22,6 +24,7 @@ type SwatchSchemeBuilderProps = {
 };
 
 export function SwatchSchemeBuilder({ scheme, onBuildCompleted }: SwatchSchemeBuilderProps) {
+  const { showToast } = useNotification();
   const { colorFn } = useColorFunction();
   const updateScheme = useUpdateScheme(scheme.id);
   const originalColors = useMemo(() => {
@@ -64,63 +67,95 @@ export function SwatchSchemeBuilder({ scheme, onBuildCompleted }: SwatchSchemeBu
     }
     return null;
   }, [scheme.schemeStorage.source]);
+  const collectSchemeSource = (formData: FormData): SwatchSchemeSource => {
+    const swatchAmount = Number(formData.get('amount'));
+    const minLightness = Number(formData.get('min_lightness'));
+    const maxLightness = Number(formData.get('max_lightness'));
+    const includePrimary = isEqual(formData.get('include_primary'), 'true');
+    const darkConvertChroma = Number(formData.get('dark_chroma')) / 100.0;
+    const darkConvertLightness = Number(formData.get('dark_lightness')) / 100.0;
 
+    const swatchSetting = new SwatchSchemeSetting(
+      swatchAmount,
+      minLightness / 100.0,
+      maxLightness / 100.0,
+      includePrimary,
+      new ColorShifting(darkConvertChroma, darkConvertLightness),
+    );
+    const dumpedSettings = swatchSetting.toJsValue() as QSwatchSchemeSetting;
+    const entries: SwatchEntry[] = [];
+    for (const key of colorKeys) {
+      const name = String(formData.get(`name_${key}`));
+      const color = String(formData.get(`color_${key}`));
+      if (isEmpty(name) || isEmpty(color)) continue;
+      entries.push(new SwatchEntry(name, color));
+    }
+    const dumpedEntries = entries.map((entry) => entry.toJsValue() as QSwatchEntry);
+
+    return {
+      colors: dumpedEntries,
+      setting: dumpedSettings,
+    };
+  };
+
+  const [, handleDraftAction] = useActionState<Map<string, string>, FormData>(
+    (_state, formData) => {
+      const errMsg = new Map<string, string>();
+
+      const collected = collectSchemeSource(formData);
+      updateScheme((prev) => {
+        prev.schemeStorage.source = collected;
+        return prev;
+      });
+      setNewColors([]);
+
+      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 swatchAmount = Number(formData.get('amount'));
+        const collected = collectSchemeSource(formData);
-        if (isNaN(swatchAmount) || swatchAmount <= 0) {
+        if (isNaN(collected.setting.amount) || collected.setting.amount <= 0) {
           errMsg.set('amount', 'MUST be a positive number');
         }
-        if (swatchAmount > 30) {
+        if (collected.setting.amount > 30) {
           errMsg.set('amount', 'MUST be less than 30');
         }
 
-        const minLightness = Number(formData.get('min_lightness'));
+        if (
-        if (isNaN(minLightness) || minLightness < 0 || minLightness > 100) {
+          isNaN(collected.setting.min_lightness) ||
+          collected.setting.min_lightness < 0 ||
+          collected.setting.min_lightness > 1.0
+        ) {
           errMsg.set('min', 'MUST be a number between 0 and 100');
         }
 
-        const maxLightness = Number(formData.get('max_lightness'));
+        if (
-        if (isNaN(maxLightness) || maxLightness < 0 || maxLightness > 100) {
+          isNaN(collected.setting.max_lightness) ||
+          collected.setting.max_lightness < 0 ||
+          collected.setting.max_lightness > 1.0
+        ) {
           errMsg.set('max', 'MUST be a number between 0 and 100');
         }
 
-        const includePrimary = isEqual(formData.get('include_primary'), 'true');
+        if (isEmpty(collected.colors)) {
-        const darkConvertChroma = Number(formData.get('dark_chroma')) / 100.0;
-        const darkConvertLightness = Number(formData.get('dark_lightness')) / 100.0;
-
-        const swatchSetting = new SwatchSchemeSetting(
-          swatchAmount,
-          minLightness / 100.0,
-          maxLightness / 100.0,
-          includePrimary,
-          new ColorShifting(darkConvertChroma, darkConvertLightness),
-        );
-        const dumpedSettings = swatchSetting.toJsValue() as QSwatchSchemeSetting;
-        const entries: SwatchEntry[] = [];
-        for (const key of colorKeys) {
-          const name = String(formData.get(`name_${key}`));
-          const color = String(formData.get(`color_${key}`));
-          if (isEmpty(name) || isEmpty(color)) continue;
-          entries.push(new SwatchEntry(name, color));
-        }
-        const dumpedEntries = entries.map((entry) => entry.toJsValue() as QSwatchEntry);
-        if (isEmpty(entries)) {
           errMsg.set('color', 'At least one color is required');
         }
 
         if (!isEmpty(errMsg)) return errMsg;
 
-        const generatedScheme = colorFn?.generate_swatch_scheme(entries, swatchSetting);
+        const generatedScheme = colorFn?.generate_swatch_scheme(
-        console.debug('[generated scheme]', generatedScheme);
+          collected.colors,
+          collected.setting,
+        );
         updateScheme((prev) => {
-          prev.schemeStorage.source = {
+          prev.schemeStorage.source = collected;
-            colors: dumpedEntries,
-            setting: dumpedSettings,
-          };
           prev.schemeStorage.scheme = mapToObject(generatedScheme[0]) as SwatchScheme;
           prev.schemeStorage.cssVariables = generatedScheme[1];
           prev.schemeStorage.cssAutoSchemeVariables = generatedScheme[2];
@@ -237,10 +272,13 @@ export function SwatchSchemeBuilder({ scheme, onBuildCompleted }: SwatchSchemeBu
             <span className={styles.error_msg}>{errMsg.get('color')}</span>
           </div>
         )}
-        <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>