Add WebGL and links addons for xterm.js

Makefile

@@ -12,7 +12,7 @@ docker:
 .PHONY: asset
 asset: bindata/static/js/gotty.js bindata/static/index.html bindata/static/favicon.png bindata/static/css/index.css bindata/static/css/xterm.css bindata/static/css/xterm_customize.css bindata/static/manifest.json bindata/static/icon_192.png server/asset.go
 
-server/asset.go:
+server/asset.go: bindata/* bindata/*/* bindata/*/*/*
 	go-bindata -prefix bindata -pkg server -ignore=\\.gitkeep -o server/asset.go bindata/...
 	gofmt -w server/asset.go
 

NEWS.md

@@ -1,5 +1,10 @@
 # GoTTY releases
 
+## v1.3.0 (Unreleased)
+
+ * Links in the tty are now clickable.
+ * Use WebGL for rendering by default.
+
 ## v1.2.0
 
  * Pass BUILD\_OPTIONS to gox, too, so release artifacts have version info included.

js/package-lock.json

@@ -1462,6 +1462,16 @@
             "resolved": "https://registry.npmjs.org/xterm-addon-fit/-/xterm-addon-fit-0.5.0.tgz",
             "integrity": "sha512-DsS9fqhXHacEmsPxBJZvfj2la30Iz9xk+UKjhQgnYNkrUIN5CYLbw7WEfz117c7+S86S/tpHPfvNxJsF5/G8wQ=="
         },
+        "xterm-addon-web-links": {
+            "version": "0.4.0",
+            "resolved": "https://registry.npmjs.org/xterm-addon-web-links/-/xterm-addon-web-links-0.4.0.tgz",
+            "integrity": "sha512-xv8GeiINmx0zENO9hf5k+5bnkaE8mRzF+OBAr9WeFq2eLaQSudioQSiT34M1ofKbzcdjSsKiZm19Rw3i4eXamg=="
+        },
+        "xterm-addon-webgl": {
+            "version": "0.10.0",
+            "resolved": "https://registry.npmjs.org/xterm-addon-webgl/-/xterm-addon-webgl-0.10.0.tgz",
+            "integrity": "sha512-MJzyWie5yw+PH6p//fXlXzmsULLtpBo992EWEKl2uv5M5Zj9etTwfuutCUK7o98mr6itDl+vS/CYIMP68jCf8w=="
+        },
         "yocto-queue": {
             "version": "0.1.0",
             "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz",

js/package.json

@@ -14,6 +14,8 @@
         "libapps": "github:yudai/libapps#release-hterm-1.70",
         "style-loader": "^2.0.0",
         "xterm": "^4.11.0",
-        "xterm-addon-fit": "^0.5.0"
+        "xterm-addon-fit": "^0.5.0",
+        "xterm-addon-web-links": "^0.4.0",
+        "xterm-addon-webgl": "^0.10.0"
     }
 }

js/src/hterm.ts

@@ -53,7 +53,9 @@ export class Hterm {
 
     setPreferences(value: object) {
         Object.keys(value).forEach((key) => {
-            this.term.getPrefs().set(key, value[key]);
+            if (key != "EnableWebGL") {
+                this.term.getPrefs().set(key, value[key]);
+            }
         });
     };
 
@@ -75,9 +77,9 @@ export class Hterm {
     };
 
     deactivate(): void {
-        this.io.onVTKeystroke    = function(){};
-        this.io.sendString       = function(){};
-        this.io.onTerminalResize = function(){};
+        this.io.onVTKeystroke = function () { };
+        this.io.sendString = function () { };
+        this.io.onTerminalResize = function () { };
         this.term.uninstallKeyboard();
     }
 

js/src/xterm.ts

@@ -1,5 +1,7 @@
 import { Terminal, IDisposable } from "xterm";
 import { FitAddon } from 'xterm-addon-fit';
+import { WebLinksAddon } from 'xterm-addon-web-links';
+import { WebglAddon } from 'xterm-addon-webgl';
 import { lib } from "libapps"
 
 export class Xterm {
@@ -13,19 +15,21 @@ export class Xterm {
     messageTimer: NodeJS.Timeout;
     onResizeHandler: IDisposable;
     onDataHandler: IDisposable;
+    fitAddOn: FitAddon;
 
     constructor(elem: HTMLElement) {
         this.elem = elem;
         this.term = new Terminal();
-        const fitAddon = new FitAddon();
-        this.term.loadAddon(fitAddon);
+        this.fitAddOn = new FitAddon();
+        this.term.loadAddon(new WebLinksAddon());
+        this.term.loadAddon(this.fitAddOn);
 
         this.message = elem.ownerDocument.createElement("div");
         this.message.className = "xterm-overlay";
         this.messageTimeout = 2000;
 
         this.resizeListener = () => {
-            fitAddon.fit();
+            this.fitAddOn.fit();
             this.term.scrollToBottom();
             this.showMessage(String(this.term.cols) + "x" + String(this.term.rows), this.messageTimeout);
         };
@@ -71,6 +75,11 @@ export class Xterm {
     };
 
     setPreferences(value: object) {
+        Object.keys(value).forEach((key) => {
+            if (key == "EnableWebGL" && key) {
+                this.term.loadAddon(new WebglAddon());
+            }
+        });
     };
 
     onInput(callback: (input: string) => void) {

server/handlers.go

@@ -154,9 +154,12 @@ func (server *Server) processWSConn(ctx context.Context, conn *websocket.Conn) e
 	if server.options.Height > 0 {
 		opts = append(opts, webtty.WithFixedRows(server.options.Height))
 	}
-	if server.options.Preferences != nil {
-		opts = append(opts, webtty.WithMasterPreferences(server.options.Preferences))
+	if server.options.Preferences == nil {
+		server.options.Preferences = &HtermPrefernces{}
 	}
+	// Awkward hack until HtermPreferences can be phased out
+	server.options.Preferences.EnableWebGL = server.options.EnableWebGL
+	opts = append(opts, webtty.WithMasterPreferences(server.options.Preferences))
 
 	tty, err := webtty.New(&wsWrapper{conn}, slave, opts...)
 	if err != nil {

server/options.go

@@ -31,6 +31,7 @@ type Options struct {
 	Height              int              `hcl:"height" flagName:"height" flagDescribe:"Static height of the screen, 0(default) means dynamically resize" default:"0"`
 	WSOrigin            string           `hcl:"ws_origin" flagName:"ws-origin" flagDescribe:"A regular expression that matches origin URLs to be accepted by WebSocket. No cross origin requests are acceptable by default" default:""`
 	Term                string           `hcl:"term" flagName:"term" flagDescribe:"Terminal name to use on the browser, one of xterm or hterm." default:"xterm"`
+	EnableWebGL         bool             `hcl:"enable_webgl" flagName:"enable-webgl" flagDescribe:"Enable WebGL renderer" default:"true"`
 
 	TitleVariables map[string]interface{}
 }
@@ -73,6 +74,7 @@ type HtermPrefernces struct {
 	EnableClipboardNotice         bool                         `hcl:"enable_clipboard_notice" json:"enable-clipboard-notice,omitempty"`
 	EnableClipboardWrite          bool                         `hcl:"enable_clipboard_write" json:"enable-clipboard-write,omitempty"`
 	EnableDec12                   bool                         `hcl:"enable_dec12" json:"enable-dec12,omitempty"`
+	EnableWebGL                   bool                         `json:"EnableWebGL,omitempty"`
 	Environment                   map[string]string            `hcl:"environment" json:"environment,omitempty"`
 	FontFamily                    string                       `hcl:"font_family" json:"font-family,omitempty"`
 	FontSize                      int                          `hcl:"font_size" json:"font-size,omitempty"`