1 files changed, 39 insertions, 0 deletions
diff --git a/app/javascript/flavours/glitch/reducers/modal.js b/app/javascript/flavours/glitch/reducers/modal.js
new file mode 100644
index 000000000..c48117181
--- /dev/null
+++ b/app/javascript/flavours/glitch/reducers/modal.js
@@ -0,0 +1,39 @@
+import { MODAL_OPEN, MODAL_CLOSE } from 'flavours/glitch/actions/modal';
+import { TIMELINE_DELETE } from 'flavours/glitch/actions/timelines';
+import { COMPOSE_UPLOAD_CHANGE_SUCCESS } from 'flavours/glitch/actions/compose';
+import { Stack as ImmutableStack, Map as ImmutableMap } from 'immutable';
+
+const initialState = ImmutableMap({
+  ignoreFocus: false,
+  stack: ImmutableStack(),
+});
+
+const popModal = (state, { modalType, ignoreFocus }) => {
+  if (modalType === undefined || modalType === state.getIn(['stack', 0, 'modalType'])) {
+    return state.set('ignoreFocus', !!ignoreFocus).update('stack', stack => stack.shift());
+  } else {
+    return state;
+  }
+};
+
+const pushModal = (state, modalType, modalProps) => {
+  return state.withMutations(map => {
+    map.set('ignoreFocus', false);
+    map.update('stack', stack => stack.unshift(ImmutableMap({ modalType, modalProps })));
+  });
+};
+
+export default function modal(state = initialState, action) {
+  switch(action.type) {
+  case MODAL_OPEN:
+    return pushModal(state, action.modalType, action.modalProps);
+  case MODAL_CLOSE:
+    return popModal(state, action);
+  case COMPOSE_UPLOAD_CHANGE_SUCCESS:
+    return popModal(state, { modalType: 'FOCAL_POINT', ignoreFocus: false });
+  case TIMELINE_DELETE:
+    return state.update('stack', stack => stack.filterNot((modal) => modal.get('modalProps').statusId === action.id));
+  default:
+    return state;
+  }
+}