feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

frontend/packages/project-ide/view/src/components/activity-bar/styles.ts

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+import { useStyling as useStylingCore } from '@coze-project-ide/core';
+
+export const useStyling = () => {
+  useStylingCore(
+    'flowide-activity-bar-widget',
+    (_, { getColor }) => `
+    .activity-bar-widget-container {
+      display: flex;
+      flex-direction: column;
+      height: 100%;
+      justify-content: space-between;
+
+      .top-container, .bottom-container {
+        display: flex;
+        flex-direction: column;
+      }
+
+      .item-container {
+        cursor: pointer;
+        position: relative;
+        color: ${getColor('flowide.color.base.text.2')};
+      }
+      .item-container.active {
+        color: ${getColor('flowide.color.base.text.0')};
+      }
+      .item-container.selected {
+        color: ${getColor('flowide.color.base.text.0')};
+      }
+      .item-container.selected::before {
+        content: "";
+        position: absolute;
+        width: 2px;
+        height: 100%;
+        background: ${getColor('flowide.color.base.primary')};
+      }
+      .item-container:hover {
+        color: ${getColor('flowide.color.base.text.0')};
+      }
+
+      .item-container > i {
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        font-size: 18px;
+        text-align: center;
+        color: inherit;
+
+        width: 36px;
+        height: 36px;
+        mask-repeat: no-repeat;
+        -webkit-mask-repeat: no-repeat;
+        mask-size: 24px;
+        -webkit-mask-size: 24px;
+        mask-position: 50% 50%;
+        -webkit-mask-position: 50% 50%;
+      }
+    }`,
+  );
+};