GenericChangeHistory: split the change history to its own component.

src/Collections/CollectionChangeEntries.tsx

@@ -3,27 +3,19 @@
 
 import * as React from "react";
 
-import moment from "moment";
-
 import * as Etebase from "etebase";
 
-import { AutoSizer, List as VirtualizedList } from "react-virtualized";
-
-import { List, ListItem } from "../widgets/List";
 import Dialog from "@material-ui/core/Dialog";
 import DialogTitle from "@material-ui/core/DialogTitle";
 import DialogContent from "@material-ui/core/DialogContent";
 import DialogActions from "@material-ui/core/DialogActions";
 import Button from "@material-ui/core/Button";
-import IconEdit from "@material-ui/icons/Edit";
-import IconDelete from "@material-ui/icons/Delete";
-import IconError from "@material-ui/icons/Error";
 
 import { useCredentials } from "../credentials";
 import { useItems } from "../etebase-helpers";
-import { TaskType, EventType, ContactType, parseString } from "../pim-types";
 import { CachedCollection } from "../Pim/helpers";
 import LoadingIndicator from "../widgets/LoadingIndicator";
+import GenericChangeHistory from "../components/GenericChangeHistory";
 
 export interface CachedItem {
   item: Etebase.Item;
@@ -82,65 +74,8 @@ export default function CollectionChangeEntries(props: PropsType) {
     return a - b;
   });
 
-  const rowRenderer = (params: { index: number, key: string, style: React.CSSProperties }) => {
-    const { key, index, style } = params;
-    const cacheItem = entriesList[entriesList.length - index - 1]!;
-    let comp;
-    try {
-      comp = parseString(cacheItem.content);
-    } catch (e) {
-      const icon = (<IconError style={{ color: "red" }} />);
-      return (
-        <ListItem
-          key={key}
-          style={style}
-          leftIcon={icon}
-          primaryText="Failed parsing item"
-          secondaryText="Unknown"
-          onClick={() => setDialog(cacheItem)}
-        />
-      );
-    }
-
-    let icon;
-    if (!cacheItem.item.isDeleted) {
-      icon = (<IconEdit style={{ color: "#16B14B" }} />);
-    } else {
-      icon = (<IconDelete style={{ color: "#F20C0C" }} />);
-    }
-
-    let name;
-    if (comp.name === "vcalendar") {
-      if (EventType.isEvent(comp)) {
-        const vevent = EventType.fromVCalendar(comp);
-        name = vevent.summary;
-      } else {
-        const vtodo = TaskType.fromVCalendar(comp);
-        name = vtodo.summary;
-      }
-    } else if (comp.name === "vcard") {
-      const vcard = new ContactType(comp);
-      name = vcard.fn;
-    } else {
-      name = "Error processing entry";
-    }
-
-    const mtime = (cacheItem.metadata.mtime) ? moment(cacheItem.metadata.mtime) : undefined;
-
-    return (
-      <ListItem
-        key={key}
-        style={style}
-        leftIcon={icon}
-        primaryText={name}
-        secondaryText={mtime && mtime.format("llll")}
-        onClick={() => setDialog(cacheItem)}
-      />
-    );
-  };
-
   return (
-    <div>
+    <div style={{ height: "calc(100vh - 300px)" }}>
       <Dialog
         open={dialog !== undefined}
         onClose={() => setDialog(undefined)}
@@ -163,19 +98,10 @@ export default function CollectionChangeEntries(props: PropsType) {
           </Button>
         </DialogActions>
       </Dialog>
-      <List style={{ height: "calc(100vh - 300px)" }}>
-        <AutoSizer>
-          {({ height, width }) => (
-            <VirtualizedList
-              width={width}
-              height={height}
-              rowCount={entriesList.length}
-              rowHeight={56}
-              rowRenderer={rowRenderer}
-            />
-          )}
-        </AutoSizer>
-      </List>
+      <GenericChangeHistory
+        items={entriesList}
+        onItemClick={setDialog}
+      />
     </div>
   );
 }

src/components/GenericChangeHistory.tsx

@@ -0,0 +1,112 @@
+// SPDX-FileCopyrightText: © 2017 EteSync Authors
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import * as React from "react";
+
+import moment from "moment";
+
+import * as Etebase from "etebase";
+
+import { AutoSizer, List as VirtualizedList } from "react-virtualized";
+
+import { List, ListItem } from "../widgets/List";
+import IconEdit from "@material-ui/icons/Edit";
+import IconDelete from "@material-ui/icons/Delete";
+import IconError from "@material-ui/icons/Error";
+
+import { TaskType, EventType, ContactType, parseString } from "../pim-types";
+
+export interface CachedItem {
+  item: Etebase.Item;
+  metadata: Etebase.ItemMetadata;
+  content: string;
+}
+
+interface PropsType {
+  items: CachedItem[];
+  onItemClick: (item: CachedItem) => void;
+
+}
+
+export default function GenericChangeHistory(props: PropsType) {
+  const entriesList = props.items.sort((a_, b_) => {
+    const a = a_.metadata.mtime ?? 0;
+    const b = b_.metadata.mtime ?? 0;
+    return a - b;
+  });
+
+  const onItemClick = props.onItemClick;
+
+  const rowRenderer = (params: { index: number, key: string, style: React.CSSProperties }) => {
+    const { key, index, style } = params;
+    const cacheItem = entriesList[entriesList.length - index - 1]!;
+    let comp;
+    try {
+      comp = parseString(cacheItem.content);
+    } catch (e) {
+      const icon = (<IconError style={{ color: "red" }} />);
+      return (
+        <ListItem
+          key={key}
+          style={style}
+          leftIcon={icon}
+          primaryText="Failed parsing item"
+          secondaryText="Unknown"
+          onClick={() => onItemClick(cacheItem)}
+        />
+      );
+    }
+
+    let icon;
+    if (!cacheItem.item.isDeleted) {
+      icon = (<IconEdit style={{ color: "#16B14B" }} />);
+    } else {
+      icon = (<IconDelete style={{ color: "#F20C0C" }} />);
+    }
+
+    let name;
+    if (comp.name === "vcalendar") {
+      if (EventType.isEvent(comp)) {
+        const vevent = EventType.fromVCalendar(comp);
+        name = vevent.summary;
+      } else {
+        const vtodo = TaskType.fromVCalendar(comp);
+        name = vtodo.summary;
+      }
+    } else if (comp.name === "vcard") {
+      const vcard = new ContactType(comp);
+      name = vcard.fn;
+    } else {
+      name = "Error processing entry";
+    }
+
+    const mtime = (cacheItem.metadata.mtime) ? moment(cacheItem.metadata.mtime) : undefined;
+
+    return (
+      <ListItem
+        key={key}
+        style={style}
+        leftIcon={icon}
+        primaryText={name}
+        secondaryText={mtime && mtime.format("llll")}
+        onClick={() => onItemClick(cacheItem)}
+      />
+    );
+  };
+
+  return (
+    <List style={{ height: "100%" }}>
+      <AutoSizer>
+        {({ height, width }) => (
+          <VirtualizedList
+            width={width}
+            height={height}
+            rowCount={entriesList.length}
+            rowHeight={56}
+            rowRenderer={rowRenderer}
+          />
+        )}
+      </AutoSizer>
+    </List>
+  );
+}