feat: Notification Service (#1011)

* WIP - Notification Service

* add snackbar provider into the main App component

* feat: Notification Service

* revert unmodified file

* Update DicomHtmlViewport.js

* update css classnames

* revert toolbarRow

* fix revert toolbarRow

* styles adjustments and hide method

* remove unecessary default options

* minor fixes

* fix long truncated messages

* move SnackbarContext to ui project, rename, export

platform/ui/src/utils/SnackbarProvider.js

@@ -0,0 +1,102 @@
+import React, { useState, createContext, useContext } from 'react';
+import SnackbarContainer from '../components/snackbar/SnackbarContainer';
+import SnackbarTypes from '../components/snackbar/SnackbarTypes';
+
+const SnackbarContext = createContext(null);
+
+export const useSnackbarContext = () => useContext(SnackbarContext);
+
+const SnackbarProvider = ({ children }) => {
+  const DEFAULT_OPTIONS = {
+    title: '',
+    message: '',
+    duration: 5000,
+    autoClose: true,
+    position: 'bottomRight',
+    type: SnackbarTypes.INFO,
+  };
+
+  const [count, setCount] = useState(1);
+  const [snackbarItems, setSnackbarItems] = useState([]);
+
+  const show = options => {
+    if (!options || (!options.title && !options.message)) {
+      console.warn(
+        'Snackbar cannot be rendered without required parameters: title | message'
+      );
+
+      return null;
+    }
+
+    const newItem = {
+      ...DEFAULT_OPTIONS,
+      ...options,
+      id: count,
+      visible: true,
+    };
+
+    setSnackbarItems(state => [...state, newItem]);
+    setCount(count + 1);
+  };
+
+  const hide = id => {
+    const hideItem = items => {
+      const newItems = items.map(item => {
+        if (item.id === id) {
+          item.visible = false;
+        }
+
+        return item;
+      });
+
+      return newItems;
+    };
+
+    setSnackbarItems(state => hideItem(state));
+
+    setTimeout(() => {
+      setSnackbarItems(state => [...state.filter(item => item.id !== id)]);
+    }, 1000);
+  };
+
+  const hideAll = () => {
+    // reset count
+    setCount(1);
+
+    // remove all items from array
+    setSnackbarItems(() => []);
+  };
+
+  /**
+   * expose snackbar methods to window for debug purposes
+   * TODO: Check if it's really necessary
+   */
+  window.snackbar = {
+    show,
+    hide,
+    hideAll,
+  };
+
+  return (
+    <SnackbarContext.Provider value={{ show, hide, hideAll, snackbarItems }}>
+      {!!snackbarItems && <SnackbarContainer />}
+      {children}
+    </SnackbarContext.Provider>
+  );
+};
+
+/**
+ *
+ * High Order Component to use the snackbar methods through a Class Component
+ *
+ */
+export const withSnackbar = Component => {
+  return function WrappedComponent(props) {
+    const snackbarContext = {
+      ...useSnackbarContext(),
+    };
+    return <Component {...props} snackbarContext={snackbarContext} />;
+  };
+};
+
+export default SnackbarProvider;