Introduce expandable diffs

scm-ui/ui-components/src/repos/DiffExpander.ts

@@ -0,0 +1,61 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020-present Cloudogu GmbH and Contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+import { File, Hunk } from "./DiffTypes";
+
+class DiffExpander {
+  file: File;
+
+  constructor(file: File) {
+    this.file = file;
+  }
+
+  hunkCount = () => {
+    return this.file.hunks.length;
+  };
+
+  getHunk: (n: number) => ExpandableHunk = (n: number) => {
+    return {
+      maxExpandHeadRange: 10,
+      maxExpandBottomRange: 10,
+      expandHead: () => {
+        console.log("expand head", n);
+      },
+      expandBottom: () => {
+        console.log("expand bottom", n);
+      },
+      hunk: this.file.hunks[n]
+    };
+  };
+}
+
+export type ExpandableHunk = {
+  hunk: Hunk;
+  maxExpandHeadRange: number;
+  maxExpandBottomRange: number;
+  expandHead: () => void;
+  expandBottom: () => void;
+};
+
+export default DiffExpander;