Lens app source code (#119)

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>
Signed-off-by: Cody Belcher <cody.t.belcher@gmail.com>

dashboard/client/components/dialog/dialog.tsx

@@ -0,0 +1,145 @@
+import "./dialog.scss";
+
+import * as React from "react";
+import { createPortal, findDOMNode } from "react-dom";
+import { disposeOnUnmount, observer } from "mobx-react";
+import { reaction } from "mobx";
+import { Animate } from "../animate";
+import { cssNames, noop, stopPropagation } from "../../utils";
+import { navigation } from "../../navigation";
+
+export interface DialogProps {
+  className?: string;
+  isOpen?: boolean;
+  open?: () => void;
+  close?: () => void;
+  onOpen?: () => void;
+  onClose?: () => void;
+  modal?: boolean;
+  pinned?: boolean;
+  animated?: boolean;
+}
+
+interface DialogState {
+  isOpen: boolean;
+}
+
+// fixme: handle animation end props.onClose() (await props.close()?)
+@observer
+export class Dialog extends React.PureComponent<DialogProps, DialogState> {
+  private contentElem: HTMLElement;
+
+  static defaultProps: DialogProps = {
+    isOpen: false,
+    open: noop,
+    close: noop,
+    onOpen: noop,
+    onClose: noop,
+    modal: true,
+    animated: true,
+    pinned: false,
+  };
+
+  @disposeOnUnmount
+  closeOnNavigate = reaction(() => navigation.getPath(), () => this.close())
+
+  public state: DialogState = {
+    isOpen: this.props.isOpen,
+  }
+
+  get elem() {
+    return findDOMNode(this) as HTMLElement;
+  }
+
+  get isOpen() {
+    return this.state.isOpen;
+  }
+
+  componentDidMount() {
+    if (this.isOpen) this.onOpen();
+  }
+
+  componentDidUpdate(prevProps: DialogProps) {
+    const { isOpen } = this.props;
+    if (isOpen !== prevProps.isOpen) {
+      this.toggle(isOpen);
+    }
+  }
+
+  componentWillUnmount() {
+    if (this.isOpen) this.onClose();
+  }
+
+  toggle(isOpen: boolean) {
+    if (isOpen) this.open();
+    else this.close();
+  }
+
+  open() {
+    requestAnimationFrame(this.onOpen); // wait for render(), bind close-event to this.elem
+    this.setState({ isOpen: true });
+    this.props.open();
+  }
+
+  close() {
+    this.onClose(); // must be first to get access to dialog's content from outside
+    this.setState({ isOpen: false });
+    this.props.close();
+  }
+
+  onOpen = () => {
+    this.props.onOpen();
+    if (!this.props.pinned) {
+      if (this.elem) this.elem.addEventListener('click', this.onClickOutside);
+      window.addEventListener('keydown', this.onEscapeKey);
+    }
+  }
+
+  onClose = () => {
+    this.props.onClose();
+    if (!this.props.pinned) {
+      if (this.elem) this.elem.removeEventListener('click', this.onClickOutside);
+      window.removeEventListener('keydown', this.onEscapeKey);
+    }
+  }
+
+  onEscapeKey = (evt: KeyboardEvent) => {
+    const escapeKey = evt.code === "Escape";
+    if (escapeKey) {
+      this.close();
+      evt.stopPropagation();
+    }
+  }
+
+  onClickOutside = (evt: MouseEvent) => {
+    const target = evt.target as HTMLElement;
+    if (!this.contentElem.contains(target)) {
+      this.close();
+      evt.stopPropagation();
+    }
+  }
+
+  render() {
+    const { modal, animated, pinned } = this.props;
+    let { className } = this.props;
+    className = cssNames("Dialog flex center", className, { modal, pinned });
+    let dialog = (
+      <div className={className} onClick={stopPropagation}>
+        <div className="box" ref={e => this.contentElem = e}>
+          {this.props.children}
+        </div>
+      </div>
+    );
+    if (animated) {
+      dialog = (
+        <Animate enter={this.isOpen} name="opacity-scale">
+          {dialog}
+        </Animate>
+      );
+    }
+    else if (!this.isOpen) {
+      return null;
+    }
+    return createPortal(dialog, document.body);
+  }
+}