Resolve "Decouple multi-file editor from file list"

1 files changed, 109 insertions, 0 deletions

diff --git a/app/assets/javascripts/ide/lib/editor.js b/app/assets/javascripts/ide/lib/editor.js
new file mode 100644
index 00000000000..51e202b9348
--- /dev/null
+++ b/app/assets/javascripts/ide/lib/editor.js
@@ -0,0 +1,109 @@
+import DecorationsController from './decorations/controller';
+import DirtyDiffController from './diff/controller';
+import Disposable from './common/disposable';
+import ModelManager from './common/model_manager';
+import editorOptions from './editor_options';
+
+export default class Editor {
+  static create(monaco) {
+    this.editorInstance = new Editor(monaco);
+
+    return this.editorInstance;
+  }
+
+  constructor(monaco) {
+    this.monaco = monaco;
+    this.currentModel = null;
+    this.instance = null;
+    this.dirtyDiffController = null;
+    this.disposable = new Disposable();
+
+    this.disposable.add(
+      this.modelManager = new ModelManager(this.monaco),
+      this.decorationsController = new DecorationsController(this),
+    );
+
+    this.debouncedUpdate = _.debounce(() => {
+      this.updateDimensions();
+    }, 200);
+    window.addEventListener('resize', this.debouncedUpdate, false);
+  }
+
+  createInstance(domElement) {
+    if (!this.instance) {
+      this.disposable.add(
+        this.instance = this.monaco.editor.create(domElement, {
+          model: null,
+          readOnly: false,
+          contextmenu: true,
+          scrollBeyondLastLine: false,
+          minimap: {
+            enabled: false,
+          },
+        }),
+        this.dirtyDiffController = new DirtyDiffController(
+          this.modelManager, this.decorationsController,
+        ),
+      );
+    }
+  }
+
+  createModel(file) {
+    return this.modelManager.addModel(file);
+  }
+
+  attachModel(model) {
+    this.instance.setModel(model.getModel());
+    this.dirtyDiffController.attachModel(model);
+
+    this.currentModel = model;
+
+    this.instance.updateOptions(editorOptions.reduce((acc, obj) => {
+      Object.keys(obj).forEach((key) => {
+        Object.assign(acc, {
+          [key]: obj[key](model),
+        });
+      });
+      return acc;
+    }, {}));
+
+    this.dirtyDiffController.reDecorate(model);
+  }
+
+  clearEditor() {
+    if (this.instance) {
+      this.instance.setModel(null);
+    }
+  }
+
+  dispose() {
+    this.disposable.dispose();
+    window.removeEventListener('resize', this.debouncedUpdate);
+
+    // dispose main monaco instance
+    if (this.instance) {
+      this.instance = null;
+    }
+  }
+
+  updateDimensions() {
+    this.instance.layout();
+  }
+
+  setPosition({ lineNumber, column }) {
+    this.instance.revealPositionInCenter({
+      lineNumber,
+      column,
+    });
+    this.instance.setPosition({
+      lineNumber,
+      column,
+    });
+  }
+
+  onPositionChange(cb) {
+    this.disposable.add(
+      this.instance.onDidChangeCursorPosition(e => cb(this.instance, e)),
+    );
+  }
+}