1 files changed, 70 insertions, 0 deletions
diff --git a/sdnr/wt/odlux/framework/src/handlers/applicationStateHandler.ts b/sdnr/wt/odlux/framework/src/handlers/applicationStateHandler.ts
new file mode 100644
index 000000000..2a952b61e
--- /dev/null
+++ b/sdnr/wt/odlux/framework/src/handlers/applicationStateHandler.ts
@@ -0,0 +1,70 @@
+import { IActionHandler } from '../flux/action';
+import { SetTitleAction } from '../actions/titleActions';
+
+import { AddSnackbarNotification, RemoveSnackbarNotification } from '../actions/snackbarActions';
+import { AddErrorInfoAction, RemoveErrorInfoAction, ClearErrorInfoAction } from '../actions/errorActions';
+
+import { IconType } from '../models/iconDefinition';
+
+import { ErrorInfo } from '../models/errorInfo';
+import { SnackbarItem } from '../models/snackbarItem';
+
+export interface IApplicationState {
+  title: string;
+  icon?: IconType; 
+
+  errors: ErrorInfo[];
+  snackBars: SnackbarItem[];
+}
+
+const applicationStateInit: IApplicationState = { title: "Loading ...", errors: [], snackBars:[] };
+
+export const applicationStateHandler: IActionHandler<IApplicationState> = (state = applicationStateInit, action) => {
+  if (action instanceof SetTitleAction) {
+    state = {
+      ...state,
+      title: action.title,
+      icon: action.icon
+    };
+  } else if (action instanceof AddErrorInfoAction) {
+    state = {
+      ...state,
+      errors: [
+        ...state.errors,
+        action.errorInfo
+      ]
+    };
+  } else if (action instanceof RemoveErrorInfoAction) {
+    const index = state.errors.indexOf(action.errorInfo);
+    if (index > -1) {
+      state = {
+        ...state,
+        errors: [
+          ...state.errors.slice(0, index),
+          ...state.errors.slice(index + 1)
+        ]
+      };
+    }
+  } else if (action instanceof ClearErrorInfoAction) {
+    if (state.errors && state.errors.length) {
+      state = {
+        ...state,
+        errors: []
+      };
+    }
+  } else if (action instanceof AddSnackbarNotification) {
+    state = {
+      ...state,
+      snackBars: [
+        ...state.snackBars,
+        action.notification
+      ]
+    };
+  } else if (action instanceof RemoveSnackbarNotification) {
+    state = {
+      ...state,
+      snackBars: state.snackBars.filter(s => s.key !== action.key)
+    };
+  }
+  return state;
+};