add history and sources button to chose between view

scm-ui/src/repos/sources/containers/SourcesView.js

@@ -0,0 +1,100 @@
+// @flow
+import React from "react";
+import { translate } from "react-i18next";
+
+import SourcecodeViewer from "../components/content/SourcecodeViewer";
+import ImageViewer from "../components/content/ImageViewer";
+import DownloadViewer from "../components/content/DownloadViewer";
+import { ExtensionPoint } from "@scm-manager/ui-extensions";
+import { getContentType } from "./contentType";
+import type { File, Repository } from "@scm-manager/ui-types";
+import { ErrorNotification, Loading } from "@scm-manager/ui-components";
+
+type Props = {
+  repository: Repository,
+  file: File,
+  revision: string,
+  path: string,
+  classes: any,
+  t: string => string
+};
+
+type State = {
+  contentType: string,
+  language: string,
+  loaded: boolean,
+  error?: Error
+};
+
+class SourcesView extends React.Component<Props, State> {
+  constructor(props: Props) {
+    super(props);
+
+    this.state = {
+      contentType: "",
+      language: "",
+      loaded: false
+    };
+  }
+
+  componentDidMount() {
+    const { file } = this.props;
+    getContentType(file._links.self.href)
+      .then(result => {
+        if (result.error) {
+          this.setState({
+            ...this.state,
+            error: result.error,
+            loaded: true
+          });
+        } else {
+          this.setState({
+            ...this.state,
+            contentType: result.type,
+            language: result.language,
+            loaded: true
+          });
+        }
+      })
+      .catch(err => {});
+  }
+
+  showSources() {
+    const { file, revision } = this.props;
+    const { contentType, language } = this.state;
+    if (contentType.startsWith("image/")) {
+      return <ImageViewer file={file} />;
+    } else if (language) {
+      return <SourcecodeViewer file={file} language={language} />;
+    } else if (contentType.startsWith("text/")) {
+      return <SourcecodeViewer file={file} language="none" />;
+    } else {
+      return (
+        <ExtensionPoint
+          name="repos.sources.view"
+          props={{ file, contentType, revision }}
+        >
+          <DownloadViewer file={file} />
+        </ExtensionPoint>
+      );
+    }
+  }
+
+  render() {
+    const { classes, file } = this.props;
+    const { loaded, error } = this.state;
+
+    if (!file || !loaded) {
+      return <Loading />;
+    }
+    if (error) {
+      return <ErrorNotification error={error} />;
+    }
+
+    const sources = this.showSources();
+
+    return <>{sources}</>;
+  }
+}
+
+export default translate("repos")(SourcesView);