Support global marks which select a tab

src/background/repositories/mark.js

@@ -0,0 +1,33 @@
+import MemoryStorage from '../infrastructures/memory-storage';
+import GlobalMark from 'background/domains/global-mark';
+
+const MARK_KEY = 'mark';
+
+export default class MarkRepository {
+  constructor() {
+    this.cache = new MemoryStorage();
+  }
+
+  getMark(key) {
+    let marks = this.getOrEmptyMarks();
+    let data = marks[key];
+    if (!data) {
+      return Promise.resolve(undefined);
+    }
+    let mark = new GlobalMark(data.tabId, data.x, data.y);
+    return Promise.resolve(mark);
+  }
+
+  setMark(key, mark) {
+    let marks = this.getOrEmptyMarks();
+    marks[key] = { tabId: mark.tabId, x: mark.x, y: mark.y };
+    this.cache.set(MARK_KEY, marks);
+
+    return Promise.resolve();
+  }
+
+  getOrEmptyMarks() {
+    return this.cache.get(MARK_KEY) || {};
+  }
+}
+