添加测试信息

src/components/tree/index.css

@@ -1,10 +1,122 @@
 /* 树容器 */
 .bim-tree {
     width: 100%;
-    overflow: auto;
+    height: 100%;
+    display: flex;
+    flex-direction: column;
+    overflow: hidden; /* 内部滚动 */
     font-size: 14px;
     color: var(--bim-ui_text_primary, #333);
     user-select: none; /* 防止双击选中文字 */
+    position: relative; /* 为下拉框定位 */
+}
+
+/* 搜索区域 */
+.bim-tree-search {
+    padding: 8px;
+    /* border-bottom: 1px solid var(--bim-ui_border_color, #d9d9d9); */
+    /* 背景透明，使用父布局背景 */
+    background-color: transparent; 
+    flex-shrink: 0;
+    position: relative;
+}
+
+.bim-tree-search-wrapper {
+    position: relative;
+    width: 100%;
+    display: flex;
+    align-items: center;
+}
+
+.bim-tree-search-icon {
+    position: absolute;
+    left: 8px;
+    width: 16px;
+    height: 16px;
+    color: var(--bim-ui_text_secondary, #999);
+    pointer-events: none; /* 让点击穿透到 input */
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.bim-tree-search-icon svg {
+    width: 100%;
+    height: 100%;
+}
+
+.bim-tree-search-input {
+    width: 100%;
+    height: 32px;
+    /* 左侧留出图标位置: 8px left + 16px icon + 4px gap = 28px */
+    padding: 4px 8px 4px 30px; 
+    border: 1px solid var(--bim-ui_border_color, #d9d9d9);
+    border-radius: 4px;
+    outline: none;
+    font-size: 13px;
+    color: inherit;
+    /* 输入框背景半透明或白色，看设计，通常输入框本身还是需要背景的，否则文字看不清 */
+    background-color: var(--bim-ui_bg_color, #fff); 
+    transition: all 0.2s;
+    box-sizing: border-box;
+}
+
+.bim-tree-search-input:focus {
+    border-color: var(--bim-primary_color, #1890ff);
+    box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
+}
+
+/* 搜索结果下拉框 */
+.bim-tree-search-results {
+    position: absolute;
+    top: 100%;
+    left: 8px;
+    right: 8px;
+    background-color: var(--bim-ui_bg_color, #fff);
+    border: 1px solid var(--bim-ui_border_color, #eee);
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+    border-radius: 4px;
+    max-height: 200px;
+    overflow-y: auto;
+    z-index: 10;
+    display: none;
+}
+
+.bim-tree-search-results.is-visible {
+    display: block;
+}
+
+.bim-tree-search-item {
+    padding: 8px 12px;
+    cursor: pointer;
+    border-bottom: 1px solid rgba(0,0,0,0.03);
+}
+
+.bim-tree-search-item:last-child {
+    border-bottom: none;
+}
+
+.bim-tree-search-item:hover {
+    background-color: var(--bim-ui_bg_hover, #f5f5f5);
+}
+
+.bim-tree-search-item-title {
+    font-weight: 500;
+    display: block;
+}
+
+.bim-tree-search-item-path {
+    font-size: 12px;
+    color: var(--bim-ui_text_secondary, #999);
+    margin-top: 2px;
+    display: block;
+}
+
+/* 树内容区域 */
+.bim-tree-content {
+    flex: 1;
+    overflow-y: auto;
+    padding: 4px 0;
 }
 
 /* 节点行容器 */
@@ -146,16 +258,66 @@
 .bim-tree-title {
     flex: 1;
     white-space: nowrap;
-    overflow: hidden;
-    text-overflow: ellipsis;
+    /* 移除省略号样式，许文本撑开 */
+    /* overflow: hidden; */
+    /* text-overflow: ellipsis; */
 }
 
 /* 子节点容器 */
 .bim-tree-children {
     display: none;
-    overflow: hidden;
+    overflow: visible; /* 允许子节点撑开宽度 */
 }
 
 .bim-tree-children.is-visible {
     display: block;
 }
+
+/* 选中高亮状态 */
+.bim-tree-node-content.is-selected {
+    background-color: var(--bim-ui_bg_selected, rgba(24, 144, 255, 0.2));
+    color: var(--bim-primary_color, #1890ff);
+}
+
+/* 节点操作栏 */
+.bim-tree-node-actions {
+    display: none; /* 默认隐藏 */
+    align-items: center;
+    margin-left: 8px; /* 与文字的间距 */
+    flex-shrink: 0;
+}
+
+.bim-tree-node-content.is-selected .bim-tree-node-actions {
+    display: flex; /* 选中时显示 */
+}
+
+/* 树内容区域 */
+.bim-tree-content {
+    flex: 1;
+    overflow: auto; /* 支持横向和纵向滚动 */
+    padding: 4px 0;
+}
+
+/* 节点行容器 */
+.bim-tree-node {
+    display: flex;
+    flex-direction: column;
+    width: fit-content; /* 关键：让节点容器跟随内容宽度 */
+    min-width: 100%;
+}
+
+/* 节点内容行 (Flex 布局) */
+.bim-tree-node-content {
+    display: flex;
+    align-items: center;
+    height: 32px; /* 标准行高 */
+    cursor: pointer;
+    transition: background-color 0.2s;
+    border-radius: 4px;
+    padding-right: 8px;
+    
+    /* 关键：允许宽度根据内容撑开，且至少占满容器 */
+    width: fit-content;
+    min-width: 100%;
+    box-sizing: border-box; 
+}