1 files changed, 29 insertions, 0 deletions
diff --git a/src/client/util/SnappingManager.ts b/src/client/util/SnappingManager.ts
new file mode 100644
index 000000000..fc07e8ab4
--- /dev/null
+++ b/src/client/util/SnappingManager.ts
@@ -0,0 +1,29 @@
+import { observable, action, runInAction } from "mobx";
+
+export namespace SnappingManager {
+
+    class Manager {
+        @observable IsDragging: boolean = false;
+        @observable public horizSnapLines: number[] = [];
+        @observable public vertSnapLines: number[] = [];
+        @action public clearSnapLines() {
+            this.vertSnapLines = [];
+            this.horizSnapLines = [];
+        }
+        @action public setSnapLines(horizLines: number[], vertLines: number[]) {
+            this.horizSnapLines = horizLines;
+            this.vertSnapLines = vertLines;
+        }
+    }
+
+    const manager = new Manager();
+
+    export function clearSnapLines() { manager.clearSnapLines(); }
+    export function setSnapLines(horizLines: number[], vertLines: number[]) { manager.setSnapLines(horizLines, vertLines); }
+    export function horizSnapLines() { return manager.horizSnapLines; }
+    export function vertSnapLines() { return manager.vertSnapLines; }
+
+    export function SetIsDragging(dragging: boolean) { runInAction(() => manager.IsDragging = dragging); }
+    export function GetIsDragging() { return manager.IsDragging; }
+}
+