feat(fe): enable drag and drop to upload files

src/client/web/package.json

@@ -59,7 +59,7 @@
     "react-icons": "4.3.1",
     "react-qr-code": "^2.0.3",
     "react-svg": "^8.0.6",
-    "throttle-debounce": "^2.1.0",
+    "throttle-debounce": "^4.0.1",
     "webpack-bundle-analyzer": "^4.4.2",
     "worker-loader": "^3.0.7"
   },

src/client/web/src/common/controls.ts

@@ -2,6 +2,7 @@ export const settingsTabsCtrl = "settingsTabs";
 export const settingsDialogCtrl = "settingsDialog";
 export const sharingCtrl = "sharingCtrl";
 export const filesViewCtrl = "filesView";
+export const dropAreaCtrl = "dropArea";
 export const ctrlHidden = "hidden";
 export const ctrlOn = "on";
 export const ctrlOff = "off";

src/client/web/src/components/core_state.ts

@@ -15,6 +15,7 @@ import {
   ctrlOn,
   ctrlOff,
   loadingCtrl,
+  dropAreaCtrl,
 } from "../common/controls";
 import { LoginProps } from "./pane_login";
 import { AdminProps } from "./pane_admin";
@@ -134,6 +135,7 @@ export function initState(): ICoreState {
           [sharingCtrl]: ctrlOff,
           [filesViewCtrl]: "rows",
           [loadingCtrl]: ctrlOff,
+          [dropAreaCtrl]: ctrlOff,
         }),
         options: Map<string, Set<string>>({
           [panelTabs]: Set<string>([
@@ -146,6 +148,7 @@ export function initState(): ICoreState {
           [sharingCtrl]: Set<string>([ctrlOn, ctrlOff]),
           [filesViewCtrl]: Set<string>(["rows", "table"]),
           [loadingCtrl]: Set<string>([ctrlOn, ctrlOff]),
+          [dropAreaCtrl]: Set<string>([ctrlOn, ctrlOff]),
         }),
       },
     },

src/client/web/src/components/layers.tsx

@@ -1,5 +1,5 @@
 import * as React from "react";
-import { List } from "immutable";
+import { throttle } from "throttle-debounce";
 
 import { updater } from "./state_updater";
 import { ICoreState, MsgProps, UIProps } from "./core_state";
@@ -16,10 +16,12 @@ import {
   loadingCtrl,
   ctrlOn,
   ctrlHidden,
+  dropAreaCtrl,
 } from "../common/controls";
 import { LoadingIcon } from "./visual/loading";
 import { Title } from "./visual/title";
 import { HotkeyHandler } from "../common/hotkeys";
+import { getIcon } from "./visual/icons";
 
 export interface Props {
   filesInfo: FilesProps;
@@ -65,6 +67,10 @@ export class Layers extends React.Component<Props, State, {}> {
       (this.props.ui.control.controls.get(sharingCtrl) === ctrlOn &&
         this.props.filesInfo.isSharing);
     const loginPaneClass = hideLogin ? "hidden" : "";
+    const dropAreaClass =
+      this.props.ui.control.controls.get(dropAreaCtrl) === ctrlOn
+        ? ""
+        : "hidden";
 
     const showSettings =
       this.props.ui.control.controls.get(settingsDialogCtrl) === ctrlOn
@@ -82,7 +88,6 @@ export class Layers extends React.Component<Props, State, {}> {
         </div>
 
         <div id="login-layer" className={`layer ${loginPaneClass}`}>
-            {/* <div id="root-container"> */}
           <AuthPane
             login={this.props.login}
             ui={this.props.ui}
@@ -90,7 +95,16 @@ export class Layers extends React.Component<Props, State, {}> {
             msg={this.props.msg}
             enabled={!hideLogin}
           />
-          {/* </div> */}
+        </div>
+
+        {/* ${dropAreaClass} */}
+        <div id="drop-area-layer" className={`${dropAreaClass}`}>
+          <div className="drop-area-container">
+            <div className="drop-area major-bg focus-font">
+              <div>{getIcon("RiFolderUploadFill", "4rem", "focus")}</div>
+              <span>{this.props.msg.pkg.get("term.dropAnywhere")}</span>
+            </div>
+          </div>
         </div>
 
         <div id="settings-layer" className={`layer ${showSettings}`}>

src/client/web/src/components/panel_files.tsx

@@ -156,15 +156,15 @@ export class FilesPanel extends React.Component<Props, State, {}> {
     }
   };
 
-  addUploads = (event: React.ChangeEvent<HTMLInputElement>) => {
+  addFileList = (originalFileList: FileList) => {
-    if (event.target.files.length > 200) {
+    if (originalFileList.length > 200) {
       Env().alertMsg(this.props.msg.pkg.get("err.tooManyUploads"));
       return;
     }
 
     let fileList = List<File>();
-    for (let i = 0; i < event.target.files.length; i++) {
+    for (let i = 0; i < originalFileList.length; i++) {
-      fileList = fileList.push(event.target.files[i]);
+      fileList = fileList.push(originalFileList[i]);
     }
 
     const status = updater().addUploads(fileList);
@@ -174,6 +174,10 @@ export class FilesPanel extends React.Component<Props, State, {}> {
     this.props.update(updater().updateUploadingsInfo);
   };
 
+  addUploads = (event: React.ChangeEvent<HTMLInputElement>) => {
+    this.addFileList(event.target.files);
+  };
+
   mkDirFromKb = async (
     event: React.KeyboardEvent<HTMLInputElement>
   ): Promise<void> => {

src/client/web/src/components/root_frame.tsx

@@ -1,5 +1,6 @@
 import * as React from "react";
-import { Map } from "immutable";
+import { Map, List } from "immutable";
+import { throttle } from "throttle-debounce";
 
 import { ICoreState, MsgProps, UIProps } from "./core_state";
 import { FilesPanel, FilesProps } from "./panel_files";
@@ -13,8 +14,10 @@ import { AdminProps } from "./pane_admin";
 import { TopBar } from "./topbar";
 import { CronJobs } from "../common/cron";
 import { updater } from "./state_updater";
+import { dropAreaCtrl, ctrlOn, ctrlOff } from "../common/controls";
 
 export const controlName = "panelTabs";
+const dragOverthrottlePeriod = 200;
 export interface Props {
   filesInfo: FilesProps;
   uploadingsInfo: UploadingsProps;
@@ -26,10 +29,16 @@ export interface Props {
   update?: (updater: (prevState: ICoreState) => ICoreState) => void;
 }
 
-export interface State {}
+export interface State {
+  lastDragOverTime: number;
+}
 export class RootFrame extends React.Component<Props, State, {}> {
+  private filesPanelRef: FilesPanel;
   constructor(p: Props) {
     super(p);
+    this.state = {
+      lastDragOverTime: 0,
+    };
   }
 
   componentDidMount(): void {
@@ -38,12 +47,22 @@ export class RootFrame extends React.Component<Props, State, {}> {
       args: [],
       delay: 60 * 1000,
     });
+
+    CronJobs().setInterval("endDrag", {
+      func: this.endDrag,
+      args: [],
+      delay: dragOverthrottlePeriod * 2,
+    });
   }
 
   componentWillUnmount() {
     CronJobs().clearInterval("autoSwitchTheme");
   }
 
+  private setFilesPanelRef = (ref: FilesPanel) => {
+    this.filesPanelRef = ref;
+  };
+
   makeBgStyle = (): Object => {
     if (this.props.ui.clientCfg.allowSetBg) {
       if (
@@ -78,6 +97,39 @@ export class RootFrame extends React.Component<Props, State, {}> {
     return {};
   };
 
+  onDragOver = (ev: React.DragEvent<HTMLDivElement>) => {
+    this.onDragOverImp();
+    ev.preventDefault();
+  };
+
+  onDragOverImp = throttle(dragOverthrottlePeriod, () => {
+    updater().setControlOption(dropAreaCtrl, ctrlOn);
+    this.props.update(updater().updateUI);
+    this.setState({ lastDragOverTime: Date.now() });
+  });
+
+  onDrop = (ev: React.DragEvent<HTMLDivElement>) => {
+    if (ev.dataTransfer?.files?.length > 0) {
+      this.filesPanelRef.addFileList(ev.dataTransfer.files);
+    }
+    ev.preventDefault();
+  };
+
+  endDrag = () => {
+    const now = Date.now();
+    const isDragOverOff =
+      this.props.ui.control.controls.get(dropAreaCtrl) === ctrlOff;
+    if (
+      now - this.state.lastDragOverTime < dragOverthrottlePeriod * 1.5 ||
+      isDragOverOff
+    ) {
+      return;
+    }
+
+    updater().setControlOption(dropAreaCtrl, ctrlOff);
+    this.props.update(updater().updateUI);
+  };
+
   render() {
     const bgStyle = this.makeBgStyle();
     const autoTheme =
@@ -97,7 +149,12 @@ export class RootFrame extends React.Component<Props, State, {}> {
     const sharingsPanelClass = displaying === "sharingsPanel" ? "" : "hidden";
 
     return (
-      <div id="root-frame" className={`${theme} ${fontSizeClass}`}>
+      <div
+        id="root-frame"
+        className={`${theme} ${fontSizeClass}`}
+        onDragOver={this.onDragOver}
+        onDrop={this.onDrop}
+      >
         <div id="bg" style={bgStyle}>
           <div id="custom">
             <Layers
@@ -151,6 +208,7 @@ export class RootFrame extends React.Component<Props, State, {}> {
                   ui={this.props.ui}
                   enabled={displaying === "filesPanel"}
                   update={this.props.update}
+                  ref={this.setFilesPanelRef}
                 />
               </span>
 

src/client/web/src/components/visual/icons.tsx

@@ -23,6 +23,7 @@ import { BiSortUp } from "@react-icons/all-files/bi/BiSortUp";
 import { RiListSettingsFill } from "@react-icons/all-files/ri/RiListSettingsFill";
 import { RiHardDriveFill } from "@react-icons/all-files/ri/RiHardDriveFill";
 import { RiGridFill } from "@react-icons/all-files/ri/RiGridFill";
+import { RiFolderUploadFill } from "@react-icons/all-files/ri/RiFolderUploadFill";
 
 import { colorClass } from "./colors";
 
@@ -54,6 +55,7 @@ const icons = Map<string, IconType>({
   RiListSettingsFill: RiListSettingsFill,
   RiHardDriveFill: RiHardDriveFill,
   RiGridFill: RiGridFill,
+  RiFolderUploadFill: RiFolderUploadFill,
 });
 
 export function getIconWithProps(

src/client/web/src/i18n/en_US.ts

@@ -153,4 +153,5 @@ export const msgs: Map<string, string> = Map({
   "autoTheme": "Enable auto theme switching",
   "term.enabled": "Enabled",
   "term.disabled": "Disabled",
+  "term.dropAnywhere": "Drop files anywhere"
 });

src/client/web/src/i18n/zh_CN.ts

@@ -150,4 +150,5 @@ export const msgs: Map<string, string> = Map({
   "autoTheme": "自动切换主题",
   "term.enabled": "启用",
   "term.disabled": "关闭",
+  "term.dropAnywhere": "把文件在任意处释放"
 });

static/public/css/dark.css

@@ -328,6 +328,22 @@
   background-color: #333;
 }
 
+.theme-dark .drop-area-container {
+  position: relative;
+  width: 100%;
+  padding-top: 20rem;
+}
+
+.theme-dark .drop-area {
+  opacity: 0.8;
+  backdrop-filter: blur(9.5px);
+  text-align: center;
+  border-radius: 0.8rem;
+  padding: 2rem 0;
+  margin: auto;
+  width: 25rem;
+}
+
 /* +colors */
 
 .theme-dark .major-font {
@@ -354,6 +370,9 @@
 .theme-dark .focus-bg {
   background-color: #16a085;
 }
+.theme-dark .reverse-bg {
+  background-color: #fff;
+}
 .theme-dark .minor-bg {
   background-color: #333;
 }

static/public/css/white.css

@@ -330,6 +330,30 @@
   background-color: #ecf0f1;
 }
 
+.theme-default .drop-area-container {
+  position: relative;
+  width: 100%;
+  padding-top: 20rem;
+}
+
+.theme-default .drop-area {
+  opacity: 0.8;
+  backdrop-filter: blur(9.5px);
+  text-align: center;
+  border-radius: 0.8rem;
+  padding: 2rem 0;
+  margin: auto;
+  width: 25rem;
+}
+
+.theme-default #login-layer {
+  z-index: 200;
+}
+
+.theme-default #drop-area-layer {
+  z-index: 4;
+}
+
 /* +colors */
 
 .theme-default .minor-font {
@@ -360,6 +384,9 @@
 .theme-default .minor-bg {
   background-color: #ecf0f6;
 }
+.theme-default .reverse-bg {
+  background-color: #000;
+}
 .theme-default ::placeholder {
   color: #95a5a6;
 }

yarn.lock

@@ -4465,10 +4465,10 @@ throat@^6.0.1:
   resolved "https://registry.yarnpkg.com/throat/-/throat-6.0.1.tgz#d514fedad95740c12c2d7fc70ea863eb51ade375"
   integrity sha512-8hmiGIJMDlwjg7dlJ4yKGLK8EsYqKgPWbG3b4wjJddKNwc7N7Dpn08Df4szr/sZdMVeOstrdYSsqzX6BYbcB+w==
 
-throttle-debounce@^2.1.0:
+throttle-debounce@^4.0.1:
-  version "2.3.0"
+  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/throttle-debounce/-/throttle-debounce-2.3.0.tgz#fd31865e66502071e411817e241465b3e9c372e2"
+  resolved "https://registry.yarnpkg.com/throttle-debounce/-/throttle-debounce-4.0.1.tgz#f86656fe9c8a6b8218952ef36c3bf225089b1baf"
-  integrity sha512-H7oLPV0P7+jgvrk+6mwwwBDmxTaxnu9HMXmloNLXwnNO0ZxZ31Orah2n8lU1eMPvsaowP2CX+USCgyovXfdOFQ==
+  integrity sha512-s3PedbXdZtr8v3J5Sxd5T/GmWG80BcK5GVpwDdvgEaUXsaMqQe4zxgmC4TA7B8luSDCPxo3CeSBS3F9rF1CZwg==
 
 tmpl@1.0.5:
   version "1.0.5"