exercise 2.3 with themes and styles

step2-03/demo/src/components/TodoApp.tsx

@@ -0,0 +1,95 @@
+import React from 'react';
+import { Stack, Customizer, mergeStyles, getTheme } from 'office-ui-fabric-react';
+import { TodoFooter } from './TodoFooter';
+import { TodoHeader } from './TodoHeader';
+import { TodoList } from './TodoList';
+import { Store } from '../store';
+import { FluentCustomizations } from '@uifabric/fluent-theme';
+
+let index = 0;
+
+const className = mergeStyles({
+  padding: 25,
+  ...getTheme().effects.elevation4
+});
+
+export class TodoApp extends React.Component<any, Store> {
+  constructor(props) {
+    super(props);
+    this.state = {
+      todos: {},
+      filter: 'all'
+    };
+  }
+  render() {
+    const { filter, todos } = this.state;
+    return (
+      <Customizer {...FluentCustomizations}>
+        <Stack horizontalAlign="center">
+          <Stack style={{ width: 400 }} gap={25} className={className}>
+            <TodoHeader addTodo={this._addTodo} setFilter={this._setFilter} filter={filter} />
+            <TodoList complete={this._complete} todos={todos} filter={filter} remove={this._remove} edit={this._edit} />
+            <TodoFooter clear={this._clear} todos={todos} />
+          </Stack>
+        </Stack>
+      </Customizer>
+    );
+  }
+
+  private _addTodo = label => {
+    const { todos } = this.state;
+    const id = index++;
+
+    this.setState({
+      todos: { ...todos, [id]: { label } }
+    });
+  };
+
+  private _remove = id => {
+    const newTodos = { ...this.state.todos };
+    delete newTodos[id];
+
+    this.setState({
+      todos: newTodos
+    });
+  };
+
+  private _complete = id => {
+    const newTodos = { ...this.state.todos };
+    newTodos[id].completed = !newTodos[id].completed;
+
+    this.setState({
+      todos: newTodos
+    });
+  };
+
+  private _edit = (id, label) => {
+    const newTodos = { ...this.state.todos };
+    newTodos[id] = { ...newTodos[id], label };
+
+    this.setState({
+      todos: newTodos
+    });
+  };
+
+  private _clear = () => {
+    const { todos } = this.state;
+    const newTodos = {};
+
+    Object.keys(this.state.todos).forEach(id => {
+      if (!todos[id].completed) {
+        newTodos[id] = todos[id];
+      }
+    });
+
+    this.setState({
+      todos: newTodos
+    });
+  };
+
+  private _setFilter = filter => {
+    this.setState({
+      filter: filter
+    });
+  };
+}