Flesh out the location-page class to make it more general.

chrome/browser/resources/settings/location_page/location_page.js

 // Copyright 2015 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.
 
 /**
  * @fileoverview
  * 'cr-settings-location-page' is the settings page for location access.
  *
  * Example:
  *
@@ skipping 41 matching lines @@
 
     /**
      * Title for the page header and navigation menu.
      */
     pageTitle: {
       type: String,
       value: '',
     },
 
     /**
-     * Name of the 'iron-icon' to show.
-     */
-    icon: {
-      type: String,
-      value: 'communication:location-on',
-      readOnly: true,
-    },
-
-    /**
      * Array of objects with url members.
      */
     block: {
       type: Array,
     },
 
     /**
      * Array of objects with url members.
      */
     allow: {
       type: Array,
     },
+
+    /**
+     * The content_settings_type value for the category we are displaying.
+     * TODO(finnur): Get this working so that it can be set from outside.
+     */
+    contentSettingsType: {
+      type: Number,
+      value: 8,
+    },
+
+    /**
+     * What the main toggle for the category is set to (the global default if
+     * no other policy is in effect).
+     */
+    globalDefault: {
+      type: Boolean,
+      value: false,
+    },
+
+    /**
+     * The site selected by the user in the dropdown list.
+     */
+    siteSelected: {
+      type: String,
+      notify: true,
+    }
   },
 
   ready: function() {
-    this.block = [];
-    this.allow = [];
+    chrome.send('fetchContentSettingsData', [this.contentSettingsType]);

[Dan Beam, 2015/09/29 16:38:55]

michaelpg@: how do you feel about this?

   },
 
-  getTitleAndCount_: function(title, count) {
+  receiveData_: function(allowedList, blockedList, defaultValue) {
+    this.block = blockedList;
+    this.allow = allowedList;
+    this.globalDefault = defaultValue;
+  },
+
+  handleToggleChange_: function(event) {
+    chrome.send(
+        'toggleChanged', [this.contentSettingsType, this.globalDefault]);
+  },
+
+  handleDblClick_: function(event) {
+    this.siteSelected = event.model.item.url;
+  },
+
+  attached: function() {
+    var self = this;
+    cr.define('Settings', function() {
+      return {
+        receiveData: function() {
+          return self.receiveData_.apply(self, arguments);
+        },
+      };
+    });
+  },
+
+  computeIcon_: function(contentSettingsType) {
+    // Wonder if any of these enum values are directly accessible from .js?
+    switch (contentSettingsType) {
+      case 0:  // COOKIES.
+        return '';  // Haven't found a good cookies icon under iron-icons.
+      case 2:  // JAVASCRIPT.
+        return 'icons:input';
+      case 8:  // FULLSCREEN.
+        return 'icons:fullscreen';
+      case 4:  // POPUPS.
+        return 'icons:open-in-new';
+      case 5:  // LOCATION.
+        return 'communication:location-on';
+      case 6:  // NOTIFICATION.
+        return 'social:notifications';
+      case 13:  // CAMERA.
+        return 'av:videocam';
+      case 14:  // MIC.
+        return 'av:mic';
+      default:
+        return '';
+    }
+  },
+
+  computeTitle_: function(contentSettingsType) {
+    switch (contentSettingsType) {
+      case 0:
+        return loadTimeData.getString('siteSettingsCookies');
+      case 2:
+        return loadTimeData.getString('siteSettingsJavascript');
+      case 8:
+        return loadTimeData.getString('siteSettingsFullscreen');
+      case 4:
+        return loadTimeData.getString('siteSettingsPopups');
+      case 5:
+        return loadTimeData.getString('siteSettingsLocation');
+      case 6:
+        return loadTimeData.getString('siteSettingsNotifications');
+      case 13:
+        return loadTimeData.getString('siteSettingsCamera');
+      case 14:
+        return loadTimeData.getString('siteSettingsMic');
+      default:

[Dan Beam, 2015/09/29 16:38:55]

assertNotReached();

+        return 'unknown';
+    }
+  },
+
+  computeDesc_: function(contentSettingsType, globalDefault) {
+    switch (contentSettingsType) {
+      case 2:  // JAVASCRIPT.

[Dan Beam, 2015/09/29 16:38:55]

make an enum in the JS

+        // "Allowed (recommended)" vs "Blocked".
+        return globalDefault ?
+            loadTimeData.getString('siteSettingsAllowedRecommended') :
+            loadTimeData.getString('siteSettingsBlocked');
+      case 4: // POPUPS.
+        // "Allowed" vs "Blocked (recommended)".
+        return globalDefault ?
+            loadTimeData.getString('siteSettingsAllowed') :
+            loadTimeData.getString('siteSettingsBlockedRecommended');
+      case 6:
+        // "Ask before sending (recommended)" vs "Blocked".
+        return globalDefault ?
+            loadTimeData.getString('siteSettingsAskBeforeSending') :
+            loadTimeData.getString('siteSettingsBlocked');
+      case 5:  // LOCATION.
+      case 13:  // CAMERA.
+      case 14:  // MIC.
+        // "Ask before accessing (recommended)" vs "Blocked".
+        return globalDefault ?
+            loadTimeData.getString('siteSettingsAskBeforeAccessing') :
+            loadTimeData.getString('siteSettingsBlocked');
+      case 8:  // FULLSCREEN.
+        // "Allowed" vs. "Ask first (recommended)".
+        return globalDefault ?
+            loadTimeData.getString('siteSettingsAllowed') :
+            loadTimeData.getString('siteSettingsAskFirstRecommended');
+      case 0:  // COOKIES.
+        // "Allow sites to save and read cookie data" vs "Blocked".
+        return globalDefault ?
+            loadTimeData.getString('siteSettingsCookiesAllowed') :
+            loadTimeData.getString('siteSettingsBlocked');
+      default:

[Dan Beam, 2015/09/29 16:38:55]

assertNotReached();

+        return 'unknown';
+    }
+  },
+
+  computeBlockedListHeader_: function(blockList) {
     return loadTimeData.getStringF(
-        'titleAndCount', loadTimeData.getString(title), count);
+        'titleAndCount',
+        loadTimeData.getString('siteSettingsBlock'),
+        blockList.length);
+  },
+
+  computeAllowedListHeader_: function(allowedList, globalDefault) {
+    return loadTimeData.getStringF(
+        'titleAndCount',
+        loadTimeData.getString(
+            globalDefault ? 'siteSettingsAllow' : 'siteSettingsExceptions'),
+        allowedList.length);
+  },
+
+  showAllowedList_: function(allowedList) {
+    return allowedList.length > 0;
+  },
+

[Dan Beam, 2015/09/29 16:38:55]

all these need /** @private */ and maybe to document their @params

+  showBlockedList_: function(blockedList, defaultValue) {
+    return blockedList.length > 0 && defaultValue;
   },
 });