bluetooth: Add adapter page to internals page.

chrome/browser/resources/bluetooth_internals/object_fieldset.js

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/**
+ * Javascript for ObjectFieldSet, a UI element for displaying the properties
+ * of a given Javascript object. These properties are displayed in a fieldset
+ * as a series of rows for each key-value pair.
+ * Served from chrome://bluetooth-internals/.
+ */
+
+cr.define('object_fieldset', function() {
+
+  /**
+   * A fieldset that lists the properties of a given object. These properties
+   * are displayed as a series of rows for each key-value pair.
+   * Only the object's own properties are displayed. Boolean values are
+   * displayed using images: a green check for 'true', and a red cancel 'x' for
+   * 'false'. All other types are converted to their string representation for
+   * display.
+   * @constructor
+   * @extends {HTMLFieldSetElement}
+   */
+  var ObjectFieldSet = cr.ui.define('fieldset');
+
+  ObjectFieldSet.prototype = {
+    __proto__: HTMLFieldSetElement.prototype,
+
+    /**
+     * Decorates the element as an ObjectFieldset.
+     */
+    decorate: function() {
+      this.classList.add('object-fieldset');
+    },
+
+    /**
+     * Sets the object data to be displayed in the fieldset.
+     * @param {!Object} value
+     */
+    setObject: function(value) {
+      this.value = value;
+      this.redraw();
+    },
+
+    /**
+     * Sets the object used to map property names to display names. If a display
+     * name is not provided, the default property name will be used.
+     * @param {!Object<string, string>} nameMap
+     */
+    setPropertyDisplayNames: function(nameMap) {
+      this.nameMap_ = nameMap;

[dpapad, 2017/01/10 17:21:33]

Doesn't |this.value| and |this.nameMap_| need to be declared somewhere?

[mbrunson, 2017/01/10 20:01:21]

Done.

+    },
+
+    /**
+     * Deletes and recreates the table structure with current object data.
+     */
+    redraw: function() {
+      this.innerHTML = '';
+
+      for (var propName in this.value) {

[dpapad, 2017/01/10 17:21:33]

Can you use Object.keys(this.value).forEach() instead of using for..in and then
having to call hasOwnProperty()?

[mbrunson, 2017/01/10 20:01:21]

Done.

+        if (!this.value.hasOwnProperty(propName)) continue;
+
+        var name = this.nameMap_[propName] || propName;
+        var value = this.value[propName];
+        var newField = document.createElement('div');
+        newField.classList.add('status');
+
+        var nameDiv = document.createElement('div');
+        nameDiv.textContent = name + ':';
+        newField.appendChild(nameDiv);
+
+        var valueDiv = document.createElement('div');
+        valueDiv.dataset.field = propName;
+
+        if (typeof(value) === 'boolean') {
+          valueDiv.classList.add('toggle-status');
+          valueDiv.classList.toggle('checked', value);
+        } else {
+          valueDiv.textContent = String(value);
+        }
+
+        newField.appendChild(valueDiv);
+        this.appendChild(newField);
+      }
+    },
+  };
+
+  return {
+    ObjectFieldSet: ObjectFieldSet,
+  };
+});