feat(endpoints): add the ability to browse offline endpoints (#2253)

* feat(back): saved data in snapshot

* feat(endpoints): adding interceptors to retrieve saved data on offline endpoints

* feat(endpoints): offline dashboard working - need tests on offline views

* refactor(endpoints): interceptors cleaning and saving/loading offline endpoints data in/from localstorage

* feat(endpoints): browsing offline endpoints

* feat(endpoints): removing all the link in offline mode - sidebar not working when switching between off and on modes w/ stateManager logic

* feat(endpoints): endpoint status detection in real time

* fix(endpoints): offline swarm endpoint are not accessible anymore

* fix(endpoints): refactor message + disable offline browsing for an endpoint when no snapshot is available for it

* fix(endpoints): adding timeout and enabling loading bar for offline requests

* fix(endpoints): trying to access a down endpoint wont remove sidebar items if it fails

* feat(endpoints): disable checkboxes on offline views for offline mode

* feat(endpoints): updating endpoint status when detecting a change

* refactor(host): moved offline status panel from engine view to new host view

* fix(endpoints): missing endpoint update on ping from home view

* fix(api): rework EndpointUpdate operation

* refactor(offline): moved endpoint status to EndpointProvider and refactor the status-changed detection

* fix(offline): moved status detection to callback on views -> prevent displaying the offline message when endpoint is back online on view change

* fix(offline): offline message is now displayed online when browsing an offline endpoint

* fix(offline): sidebar updates correctly on endpoint status change

* fix(offline): offline panel not displayed and hidden on online mode

* refactor(offline): rework of OfflineMode management

* refactor(offline): extract information-panel for offlineMode into a component

* refactor(offline): remove redundant binding of informationPanel + endpointStatusInterceptor patter as service

* refactor(interceptors): moved interceptors pattern to service pattern

* feat(stacks): prevent inspection of a stack in offline mode

* feat(host): hide devices/disk panels in offline mode

* feat(host): disable browse action in offline mode

* refactor(home): remove comments

app/docker/components/host-overview/host-overview.html

@@ -8,25 +8,27 @@
   <rd-header-content>Docker</rd-header-content>
 </rd-header>
 
+<information-panel-offline ng-if="$ctrl.offlineMode"></information-panel-offline>
+
 <host-details-panel
   host="$ctrl.hostDetails"
-  is-browse-enabled="$ctrl.isAgent && $ctrl.agentApiVersion > 1"
+  is-browse-enabled="$ctrl.isAgent && $ctrl.agentApiVersion > 1 && !$ctrl.offlineMode"
   browse-url="{{$ctrl.browseUrl}}"
-  is-job-enabled="$ctrl.isJobEnabled"
+  is-job-enabled="$ctrl.isJobEnabled && !$ctrl.offlineMode"
   job-url="{{$ctrl.jobUrl}}"
 ></host-details-panel>
 
 <engine-details-panel engine="$ctrl.engineDetails"></engine-details-panel>
 
 <jobs-datatable
-  ng-if="$ctrl.isJobEnabled && $ctrl.jobs"
+  ng-if="$ctrl.isJobEnabled && $ctrl.jobs && !$ctrl.offlineMode"
   title-text="Jobs" title-icon="fa-tasks"
   dataset="$ctrl.jobs"
   table-key="jobs"
   order-by="Created" reverse-order="true"
 ></jobs-datatable>
 
-<devices-panel ng-if="$ctrl.isAgent && $ctrl.agentApiVersion > 1" devices="$ctrl.devices"></devices-panel>
-<disks-panel ng-if="$ctrl.isAgent && $ctrl.agentApiVersion > 1" disks="$ctrl.disks"></disks-panel>
+<devices-panel ng-if="$ctrl.isAgent && $ctrl.agentApiVersion > 1 && !$ctrl.offlineMode" devices="$ctrl.devices"></devices-panel>
+<disks-panel ng-if="$ctrl.isAgent && $ctrl.agentApiVersion > 1 && !$ctrl.offlineMode" disks="$ctrl.disks"></disks-panel>
 
 <ng-transclude></ng-transclude>

app/docker/components/host-overview/host-overview.js

@@ -6,6 +6,7 @@ angular.module('portainer.docker').component('hostOverview', {
     devices: '<',
     disks: '<',
     isAgent: '<',
+    offlineMode: '<',
     agentApiVersion: '<',
     refreshUrl: '@',
     browseUrl: '@',