feat(grid): preview image URLs in cell details

apps/desktop/src/components/grid/DataGrid.vue

@@ -91,6 +91,7 @@ import {
 } from "@/lib/dataGridTranspose";
 import { matchesRowStatusFilter, type RowStatus, type RowStatusFilter } from "@/lib/gridRowStatus";
 import { displayCellValue, type CellValue } from "@/lib/cellValue";
+import { cellImagePreviewUrl } from "@/lib/cellImageUrl";
 import {
   applyColumnFormatter,
   buildColumnFormatterKey,
@@ -253,6 +254,8 @@ function typeColorClass(t: string): string {
 const contextCell = ref<{ rowId: number; rowIndex: number; col: number } | null>(null);
 const detailCell = ref<{ rowIndex: number; col: number } | null>(null);
 const showCellDetail = ref(false);
+const detailWidth = ref(320);
+const isResizingDetail = ref(false);
 const transposeRowIndex = ref<number | null>(null);
 const showTranspose = ref(false);
 const transposeScrollRef = ref<HTMLElement | { $el?: HTMLElement }>();
@@ -1596,6 +1599,7 @@ const activeCellDetail = computed(() => {
     value,
     rawValue,
     displayValue,
+    imagePreviewUrl: cellImagePreviewUrl(value),
     length: value === null ? 0 : String(value).length,
     formattedJson,
     isEditable: canEditCellItem(item, cell.col),
@@ -2143,6 +2147,8 @@ const ddlWrap = ref(true);
 const isResizingDdl = ref(false);
 let ddlResizeStartX = 0;
 let ddlResizeStartWidth = 0;
+let detailResizeStartX = 0;
+let detailResizeStartWidth = 0;
 const indexes = ref<IndexInfo[]>([]);
 const indexesLoaded = ref(false);
 const indexesLoading = ref(false);
@@ -2160,6 +2166,10 @@ const ddlDrawerStyle = computed(() => ({
   width: `${ddlWidth.value}px`,
 }));
 
+const detailDrawerStyle = computed(() => ({
+  width: `${detailWidth.value}px`,
+}));
+
 const tableInfoTabs = computed(
   () =>
     [
@@ -2325,6 +2335,28 @@ function onDdlResizeEnd() {
   window.removeEventListener("mouseup", onDdlResizeEnd);
 }
 
+function onDetailResizeStart(event: MouseEvent) {
+  isResizingDetail.value = true;
+  detailResizeStartX = event.clientX;
+  detailResizeStartWidth = detailWidth.value;
+  document.body.classList.add("select-none", "cursor-col-resize");
+  window.addEventListener("mousemove", onDetailResizeMove);
+  window.addEventListener("mouseup", onDetailResizeEnd);
+}
+
+function onDetailResizeMove(event: MouseEvent) {
+  if (!isResizingDetail.value) return;
+  const nextWidth = detailResizeStartWidth + detailResizeStartX - event.clientX;
+  detailWidth.value = Math.min(Math.max(nextWidth, 260), 900);
+}
+
+function onDetailResizeEnd() {
+  isResizingDetail.value = false;
+  document.body.classList.remove("select-none", "cursor-col-resize");
+  window.removeEventListener("mousemove", onDetailResizeMove);
+  window.removeEventListener("mouseup", onDetailResizeEnd);
+}
+
 const loadingElapsed = ref(0);
 let _loadingTimer: ReturnType<typeof setInterval> | undefined;
 let _loadingStart = 0;
@@ -2346,6 +2378,7 @@ watch(
 onUnmounted(() => {
   cleanupFrames();
   onDdlResizeEnd();
+  onDetailResizeEnd();
   finishCellSelection();
   clearTimeout(_searchTimer);
   clearInterval(_loadingTimer);
@@ -3537,8 +3570,14 @@ defineExpose({
             <!-- Cell Detail Drawer -->
             <div
               v-if="showCellDetail && activeCellDetail"
-              class="relative w-80 shrink-0 border-l flex flex-col bg-background min-w-0"
+              class="relative shrink-0 border-l flex flex-col bg-background min-w-0"
+              :class="{ 'detail-drawer-resizing': isResizingDetail }"
+              :style="detailDrawerStyle"
             >
+              <div
+                class="absolute left-0 top-0 bottom-0 z-20 w-1.5 -translate-x-1/2 cursor-col-resize hover:bg-primary/30"
+                @mousedown.prevent="onDetailResizeStart"
+              />
               <div class="h-9 flex items-center gap-2 px-3 border-b shrink-0 bg-muted/20">
                 <Info class="w-3.5 h-3.5 text-muted-foreground" />
                 <span class="text-xs font-medium flex-1 min-w-0 truncate">{{ t("grid.cellDetails") }}</span>
@@ -3582,6 +3621,24 @@ defineExpose({
                 </div>
                 <div class="space-y-1">
                   <div class="text-muted-foreground">{{ t("grid.cellValue") }}</div>
+                  <div v-if="activeCellDetail.imagePreviewUrl && !isEditingDetail" class="space-y-1.5">
+                    <div class="text-muted-foreground">{{ t("grid.imagePreview") }}</div>
+                    <a
+                      :href="activeCellDetail.imagePreviewUrl"
+                      target="_blank"
+                      rel="noreferrer"
+                      class="block overflow-hidden rounded border bg-muted/20"
+                    >
+                      <img
+                        :src="activeCellDetail.imagePreviewUrl"
+                        :alt="activeCellDetail.column"
+                        loading="lazy"
+                        decoding="async"
+                        referrerpolicy="no-referrer"
+                        class="max-h-72 w-full object-contain"
+                      />
+                    </a>
+                  </div>
                   <template v-if="isEditingDetail">
                     <textarea
                       v-model="detailEditValue"

apps/desktop/src/i18n/locales/en.ts

@@ -342,6 +342,7 @@ export default {
     selectedCells: "{count} selected",
     cellDetails: "Cell Details",
     cellValue: "Value",
+    imagePreview: "Image Preview",
     columnName: "Column",
     columnType: "Type",
     columnComment: "Comment",

apps/desktop/src/i18n/locales/es.ts

@@ -318,6 +318,7 @@ export default {
     selectedCells: "{count} seleccionadas",
     cellDetails: "Detalles de celda",
     cellValue: "Valor",
+    imagePreview: "Vista previa de imagen",
     columnName: "Columna",
     columnType: "Tipo",
     columnComment: "Comentario",

apps/desktop/src/i18n/locales/zh-CN.ts

@@ -338,6 +338,7 @@ export default {
     selectedCells: "已选 {count} 个单元格",
     cellDetails: "单元格详情",
     cellValue: "值",
+    imagePreview: "图片预览",
     columnName: "列名",
     columnType: "类型",
     columnComment: "注释",

apps/desktop/src/lib/cellImageUrl.ts

@@ -0,0 +1,27 @@
+import type { CellValue } from "@/lib/cellValue";
+
+const IMAGE_PATH_RE = /\.(?:png|jpe?g|webp|gif|avif|bmp|svg)$/i;
+const SAFE_DATA_IMAGE_RE = /^data:image\/(?:png|jpe?g|webp|gif|avif|bmp);base64,[a-z0-9+/=\s]+$/i;
+
+function isLocalHttpHost(hostname: string): boolean {
+  return hostname === "localhost" || hostname === "127.0.0.1" || hostname === "::1";
+}
+
+export function cellImagePreviewUrl(value: CellValue): string | null {
+  if (typeof value !== "string") return null;
+  const text = value.trim();
+  if (!text) return null;
+  if (SAFE_DATA_IMAGE_RE.test(text)) return text;
+
+  let url: URL;
+  try {
+    url = new URL(text);
+  } catch {
+    return null;
+  }
+
+  if (url.protocol === "http:" && !isLocalHttpHost(url.hostname)) return null;
+  if (url.protocol !== "https:" && url.protocol !== "http:") return null;
+  if (!IMAGE_PATH_RE.test(url.pathname)) return null;
+  return text;
+}

packages/app-tests/cellImageUrl.test.ts

@@ -0,0 +1,32 @@
+import { strict as assert } from "node:assert";
+import test from "node:test";
+import { cellImagePreviewUrl } from "../../apps/desktop/src/lib/cellImageUrl.ts";
+
+test("detects obvious remote image URLs", () => {
+  assert.equal(cellImagePreviewUrl("https://cdn.example.com/avatar/user.png"), "https://cdn.example.com/avatar/user.png");
+  assert.equal(
+    cellImagePreviewUrl(" https://cdn.example.com/photo.JPG?width=320#preview "),
+    "https://cdn.example.com/photo.JPG?width=320#preview",
+  );
+  assert.equal(cellImagePreviewUrl("https://cdn.example.com/image.webp"), "https://cdn.example.com/image.webp");
+});
+
+test("allows localhost HTTP image URLs for development data", () => {
+  assert.equal(cellImagePreviewUrl("http://localhost:3000/image.gif"), "http://localhost:3000/image.gif");
+  assert.equal(cellImagePreviewUrl("http://127.0.0.1:8080/image.jpg"), "http://127.0.0.1:8080/image.jpg");
+});
+
+test("rejects non-image and unsafe URLs", () => {
+  assert.equal(cellImagePreviewUrl("https://example.com/page"), null);
+  assert.equal(cellImagePreviewUrl("https://example.com/image.txt"), null);
+  assert.equal(cellImagePreviewUrl("http://example.com/image.png"), null);
+  assert.equal(cellImagePreviewUrl("file:///tmp/image.png"), null);
+  assert.equal(cellImagePreviewUrl("javascript:alert(1)"), null);
+  assert.equal(cellImagePreviewUrl(42), null);
+  assert.equal(cellImagePreviewUrl(null), null);
+});
+
+test("detects safe data image URLs", () => {
+  assert.equal(cellImagePreviewUrl("data:image/png;base64,abc123"), "data:image/png;base64,abc123");
+  assert.equal(cellImagePreviewUrl("data:image/svg+xml;base64,abc123"), null);
+});