Adding light monitor

lib/dashboard/light_monitor.js

@@ -0,0 +1,171 @@
+let blessed = require("neo-blessed");
+let CommandHistory = require('./command_history.js');
+
+class LightMonitor {
+  constructor(_options) {
+    let options = _options || {};
+    this.env = options.env;
+    this.console = options.console;
+    this.history = new CommandHistory();
+    this.events = options.events;
+
+    this.color = options.color || "green";
+    this.minimal = options.minimal || false;
+
+    this.screen = blessed.screen({
+      smartCSR: true,
+      title: options.title || ("Embark " + options.version),
+      dockBorders: false,
+      fullUnicode: true,
+      autoPadding: true
+    });
+
+    this.layoutLog();
+    this.layoutCmd();
+
+    this.screen.key(["C-c"], function () {
+      process.exit(0);
+    });
+
+    this.logEntry = this.logEntry.bind(this);
+
+    this.screen.render();
+    this.input.focus();
+  }
+
+  logEntry() {
+    this.logText.log(...arguments);
+    this.screen.render();
+  }
+
+  layoutLog() {
+    this.log = blessed.box({
+      label: __("Logs"),
+      padding: 1,
+      width: "100%",
+      height: "100%",
+      left: "0%",
+      top: "0%",
+      border: {
+        type: "line"
+      },
+      style: {
+        fg: -1,
+        border: {
+          fg: this.color
+        }
+      }
+    });
+
+    this.logText = blessed.log({
+      parent: this.log,
+      tags: true,
+      width: "100%-5",
+      //height: '90%',
+      scrollable: true,
+      input: false,
+      alwaysScroll: true,
+      scrollbar: {
+        ch: " ",
+        inverse: true
+      },
+      keys: false,
+      vi: false,
+      mouse: true
+    });
+
+    this.screen.append(this.log);
+  }
+
+  layoutCmd() {
+    this.consoleBox = blessed.box({
+      label: __('Console'),
+      tags: true,
+      padding: 0,
+      width: '100%',
+      height: '6%',
+      left: '0%',
+      top: '95%',
+      border: {
+        type: 'line'
+      },
+      style: {
+        fg: 'black',
+        border: {
+          fg: this.color
+        }
+      }
+    });
+
+    this.input = blessed.textbox({
+      parent: this.consoleBox,
+      name: 'input',
+      input: true,
+      keys: false,
+      top: 0,
+      left: 1,
+      height: '50%',
+      width: '100%-2',
+      inputOnFocus: true,
+      style: {
+        fg: 'green',
+        bg: 'black',
+        focus: {
+          bg: 'black',
+          fg: 'green'
+        }
+      }
+    });
+
+    let self = this;
+
+    this.input.key(["C-c"], function () {
+      self.events.emit('exit');
+      process.exit(0);
+    });
+
+    this.input.key(["C-w"], function () {
+      self.input.clearValue();
+      self.input.focus();
+    });
+
+    this.input.key(["up"], function () {
+      let cmd = self.history.getPreviousCommand();
+      self.input.setValue(cmd);
+      self.input.focus();
+    });
+
+    this.input.key(["down"], function () {
+      let cmd = self.history.getNextCommand();
+      self.input.setValue(cmd);
+      self.input.focus();
+    });
+
+    this.input.on('submit', this.submitCmd.bind(this));
+
+    this.screen.append(this.consoleBox);
+  }
+
+  submitCmd(cmd) {
+    if (cmd !== '') {
+      this.history.addCommand(cmd);
+      this.executeCmd(cmd);
+    }
+    this.input.clearValue();
+    this.input.focus();
+  }
+
+  executeCmd(cmd, cb) {
+    const self = this;
+    self.logText.log('console> '.bold.green + cmd);
+    self.console.executeCmd(cmd, function (result) {
+      self.logText.log(result);
+      if (cb) {
+        cb(result);
+      }
+    });
+  }
+
+}
+
+module.exports = LightMonitor;