Add pinned posts (#4217)

api/admin_test.go

@@ -225,7 +225,7 @@ func TestGetTeamAnalyticsStandard(t *testing.T) {
 			t.Fatal()
 		}
 
-		if rows[0].Value != 3 {
+		if rows[0].Value != 4 {
 			t.Log(rows.ToJson())
 			t.Fatal()
 		}
@@ -245,7 +245,7 @@ func TestGetTeamAnalyticsStandard(t *testing.T) {
 			t.Fatal()
 		}
 
-		if rows[2].Value != 5 {
+		if rows[2].Value != 6 {
 			t.Log(rows.ToJson())
 			t.Fatal()
 		}

api/apitestlib.go

@@ -21,6 +21,7 @@ type TestHelper struct {
 	BasicUser2   *model.User
 	BasicChannel *model.Channel
 	BasicPost    *model.Post
+	PinnedPost   *model.Post
 
 	SystemAdminClient  *model.Client
 	SystemAdminTeam    *model.Team
@@ -91,6 +92,9 @@ func (me *TestHelper) InitBasic() *TestHelper {
 	me.BasicChannel = me.CreateChannel(me.BasicClient, me.BasicTeam)
 	me.BasicPost = me.CreatePost(me.BasicClient, me.BasicChannel)
 
+	pinnedPostChannel := me.CreateChannel(me.BasicClient, me.BasicTeam)
+	me.PinnedPost = me.CreatePinnedPost(me.BasicClient, pinnedPostChannel)
+
 	return me
 }
 
@@ -265,6 +269,21 @@ func (me *TestHelper) CreatePost(client *model.Client, channel *model.Channel) *
 	return r
 }
 
+func (me *TestHelper) CreatePinnedPost(client *model.Client, channel *model.Channel) *model.Post {
+	id := model.NewId()
+
+	post := &model.Post{
+		ChannelId: channel.Id,
+		Message:   "message_" + id,
+		IsPinned:  true,
+	}
+
+	utils.DisableDebugLogForTest()
+	r := client.Must(client.CreatePost(post)).Data.(*model.Post)
+	utils.EnableDebugLogForTest()
+	return r
+}
+
 func (me *TestHelper) LoginBasic() {
 	utils.DisableDebugLogForTest()
 	me.BasicClient.Must(me.BasicClient.Login(me.BasicUser.Email, me.BasicUser.Password))

api/channel.go

@@ -39,6 +39,7 @@ func InitChannel() {
 	BaseRoutes.NeedChannel.Handle("/stats", ApiUserRequired(getChannelStats)).Methods("GET")
 	BaseRoutes.NeedChannel.Handle("/members/{user_id:[A-Za-z0-9]+}", ApiUserRequired(getChannelMember)).Methods("GET")
 	BaseRoutes.NeedChannel.Handle("/members/ids", ApiUserRequired(getChannelMembersByIds)).Methods("POST")
+	BaseRoutes.NeedChannel.Handle("/pinned", ApiUserRequired(getPinnedPosts)).Methods("GET")
 	BaseRoutes.NeedChannel.Handle("/join", ApiUserRequired(join)).Methods("POST")
 	BaseRoutes.NeedChannel.Handle("/leave", ApiUserRequired(leave)).Methods("POST")
 	BaseRoutes.NeedChannel.Handle("/delete", ApiUserRequired(deleteChannel)).Methods("POST")
@@ -598,6 +599,21 @@ func getMyChannelMembers(c *Context, w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+func getPinnedPosts(c *Context, w http.ResponseWriter, r *http.Request) {
+	params := mux.Vars(r)
+	channelId := params["channel_id"]
+	posts := &model.PostList{}
+
+	if result := <-app.Srv.Store.Channel().GetPinnedPosts(channelId); result.Err != nil {
+		c.Err = result.Err
+		return
+	} else {
+		posts = result.Data.(*model.PostList)
+	}
+
+	w.Write([]byte(posts.ToJson()))
+}
+
 func addMember(c *Context, w http.ResponseWriter, r *http.Request) {
 	params := mux.Vars(r)
 	id := params["channel_id"]

api/channel_test.go

@@ -926,8 +926,8 @@ func TestGetMoreChannelsPage(t *testing.T) {
 	} else {
 		channels := r.Data.(*model.ChannelList)
 
-		// 1 for BasicChannel, 2 for open channels created above
-		if len(*channels) != 3 {
+		// 1 for BasicChannel, 1 for PinnedPostChannel, 2 for open channels created above
+		if len(*channels) != 4 {
 			t.Fatal("wrong length")
 		}
 
@@ -990,11 +990,11 @@ func TestGetChannelCounts(t *testing.T) {
 	} else {
 		counts := result.Data.(*model.ChannelCounts)
 
-		if len(counts.Counts) != 5 {
+		if len(counts.Counts) != 6 {
 			t.Fatal("wrong number of channel counts")
 		}
 
-		if len(counts.UpdateTimes) != 5 {
+		if len(counts.UpdateTimes) != 6 {
 			t.Fatal("wrong number of channel update times")
 		}
 
@@ -1024,8 +1024,8 @@ func TestGetMyChannelMembers(t *testing.T) {
 	} else {
 		members := result.Data.(*model.ChannelMembers)
 
-		// town-square, off-topic, basic test channel, channel1, channel2
-		if len(*members) != 5 {
+		// town-square, off-topic, basic test channel, pinned post channel, channel1, channel2
+		if len(*members) != 6 {
 			t.Fatal("wrong number of members", len(*members))
 		}
 	}
@@ -2117,3 +2117,24 @@ func TestUpdateChannelRoles(t *testing.T) {
 		t.Fatal("Channel member should not be able to promote itself to channel admin:", meta)
 	}
 }
+
+func TestGetPinnedPosts(t *testing.T) {
+	th := Setup().InitBasic()
+	Client := th.BasicClient
+
+	post1 := th.BasicPost
+	r1 := Client.Must(Client.GetPinnedPosts(post1.ChannelId)).Data.(*model.PostList)
+	if len(r1.Order) != 0 {
+		t.Fatal("should not have gotten a pinned post")
+	}
+
+	post2 := th.PinnedPost
+	r2 := Client.Must(Client.GetPinnedPosts(post2.ChannelId)).Data.(*model.PostList)
+	if len(r2.Order) == 0 {
+		t.Fatal("should have gotten a pinned post")
+	}
+
+	if _, ok := r2.Posts[post2.Id]; !ok {
+		t.Fatal("missing pinned post")
+	}
+}

api/post.go

@@ -38,6 +38,8 @@ func InitPost() {
 	BaseRoutes.NeedPost.Handle("/before/{offset:[0-9]+}/{num_posts:[0-9]+}", ApiUserRequired(getPostsBefore)).Methods("GET")
 	BaseRoutes.NeedPost.Handle("/after/{offset:[0-9]+}/{num_posts:[0-9]+}", ApiUserRequired(getPostsAfter)).Methods("GET")
 	BaseRoutes.NeedPost.Handle("/get_file_infos", ApiUserRequired(getFileInfosForPost)).Methods("GET")
+	BaseRoutes.NeedPost.Handle("/pin", ApiUserRequired(pinPost)).Methods("POST")
+	BaseRoutes.NeedPost.Handle("/unpin", ApiUserRequired(unpinPost)).Methods("POST")
 }
 
 func createPost(c *Context, w http.ResponseWriter, r *http.Request) {
@@ -91,6 +93,59 @@ func updatePost(c *Context, w http.ResponseWriter, r *http.Request) {
 	w.Write([]byte(rpost.ToJson()))
 }
 
+func saveIsPinnedPost(c *Context, w http.ResponseWriter, r *http.Request, isPinned bool) {
+	params := mux.Vars(r)
+
+	channelId := params["channel_id"]
+	if len(channelId) != 26 {
+		c.SetInvalidParam("savedIsPinnedPost", "channelId")
+		return
+	}
+
+	postId := params["post_id"]
+	if len(postId) != 26 {
+		c.SetInvalidParam("savedIsPinnedPost", "postId")
+		return
+	}
+
+	pchan := app.Srv.Store.Post().Get(postId)
+
+	var oldPost *model.Post
+	if result := <-pchan; result.Err != nil {
+		c.Err = result.Err
+		return
+	} else {
+		oldPost = result.Data.(*model.PostList).Posts[postId]
+		newPost := &model.Post{}
+		*newPost = *oldPost
+		newPost.IsPinned = isPinned
+
+		if result := <-app.Srv.Store.Post().Update(newPost, oldPost); result.Err != nil {
+			c.Err = result.Err
+			return
+		} else {
+			rpost := result.Data.(*model.Post)
+
+			message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_POST_EDITED, "", rpost.ChannelId, "", nil)
+			message.Add("post", rpost.ToJson())
+
+			go app.Publish(message)
+
+			app.InvalidateCacheForChannelPosts(rpost.ChannelId)
+
+			w.Write([]byte(rpost.ToJson()))
+		}
+	}
+}
+
+func pinPost(c *Context, w http.ResponseWriter, r *http.Request) {
+	saveIsPinnedPost(c, w, r, true)
+}
+
+func unpinPost(c *Context, w http.ResponseWriter, r *http.Request) {
+	saveIsPinnedPost(c, w, r, false)
+}
+
 func getFlaggedPosts(c *Context, w http.ResponseWriter, r *http.Request) {
 	params := mux.Vars(r)
 

api/post_test.go

@@ -1378,3 +1378,49 @@ func TestGetOpenGraphMetadata(t *testing.T) {
 		t.Fatal("should have failed with 501 - disabled link previews")
 	}
 }
+
+func TestPinPost(t *testing.T) {
+	th := Setup().InitBasic()
+	Client := th.BasicClient
+
+	post := th.BasicPost
+	if rupost1, err := Client.PinPost(post.ChannelId, post.Id); err != nil {
+		t.Fatal(err)
+	} else {
+		if rupost1.Data.(*model.Post).IsPinned != true {
+			t.Fatal("failed to pin post")
+		}
+	}
+
+	pinnedPost := th.PinnedPost
+	if rupost2, err := Client.PinPost(pinnedPost.ChannelId, pinnedPost.Id); err != nil {
+		t.Fatal(err)
+	} else {
+		if rupost2.Data.(*model.Post).IsPinned != true {
+			t.Fatal("pinning a post should be idempotent")
+		}
+	}
+}
+
+func TestUnpinPost(t *testing.T) {
+	th := Setup().InitBasic()
+	Client := th.BasicClient
+
+	pinnedPost := th.PinnedPost
+	if rupost1, err := Client.UnpinPost(pinnedPost.ChannelId, pinnedPost.Id); err != nil {
+		t.Fatal(err)
+	} else {
+		if rupost1.Data.(*model.Post).IsPinned != false {
+			t.Fatal("failed to unpin post")
+		}
+	}
+
+	post := th.BasicPost
+	if rupost2, err := Client.UnpinPost(post.ChannelId, post.Id); err != nil {
+		t.Fatal(err)
+	} else {
+		if rupost2.Data.(*model.Post).IsPinned != false {
+			t.Fatal("unpinning a post should be idempotent")
+		}
+	}
+}

i18n/en.json

@@ -4623,6 +4623,10 @@
     "id": "store.sql_channel.extra_updated.app_error",
     "translation": "Problem updating members last updated time"
   },
+  {
+    "id": "store.sql_channel.pinned_posts.app_error",
+    "translation": "We couldn't find the pinned posts"
+  },
   {
     "id": "store.sql_channel.get.existing.app_error",
     "translation": "We couldn't find the existing channel"

model/client.go

@@ -1533,6 +1533,16 @@ func (c *Client) GetFlaggedPosts(offset int, limit int) (*Result, *AppError) {
 	}
 }
 
+func (c *Client) GetPinnedPosts(channelId string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId)+"/pinned", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), PostListFromJson(r.Body)}, nil
+	}
+}
+
 func (c *Client) UploadProfileFile(data []byte, contentType string) (*Result, *AppError) {
 	return c.uploadFile(c.ApiUrl+"/users/newimage", data, contentType)
 }
@@ -2389,3 +2399,23 @@ func (c *Client) UpdateChannelRoles(channelId string, userId string, roles strin
 			}
 	}
 }
+
+func (c *Client) PinPost(channelId string, postId string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetChannelRoute(channelId)+"/posts/"+postId+"/pin", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), PostFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UnpinPost(channelId string, postId string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetChannelRoute(channelId)+"/posts/"+postId+"/unpin", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), PostFromJson(r.Body)}, nil
+	}
+}

model/post.go

@@ -38,6 +38,7 @@ type Post struct {
 	UpdateAt      int64           `json:"update_at"`
 	EditAt        int64           `json:"edit_at"`
 	DeleteAt      int64           `json:"delete_at"`
+	IsPinned      bool            `json:"is_pinned"`
 	UserId        string          `json:"user_id"`
 	ChannelId     string          `json:"channel_id"`
 	RootId        string          `json:"root_id"`

store/sql_channel_store.go

@@ -321,6 +321,32 @@ func (s SqlChannelStore) Get(id string, allowFromCache bool) StoreChannel {
 	return s.get(id, false, allowFromCache)
 }
 
+func (s SqlChannelStore) GetPinnedPosts(channelId string) StoreChannel {
+	storeChannel := make(StoreChannel, 1)
+
+	go func() {
+		result := StoreResult{}
+		pl := &model.PostList{}
+
+		var posts []*model.Post
+		if _, err := s.GetReplica().Select(&posts, "SELECT * FROM Posts WHERE IsPinned = true AND ChannelId = :ChannelId AND DeleteAt = 0 ORDER BY CreateAt ASC", map[string]interface{}{"ChannelId": channelId}); err != nil {
+			result.Err = model.NewLocAppError("SqlPostStore.GetPinnedPosts", "store.sql_channel.pinned_posts.app_error", nil, err.Error())
+		} else {
+			for _, post := range posts {
+				pl.AddPost(post)
+				pl.AddOrder(post.Id)
+			}
+		}
+
+		result.Data = pl
+
+		storeChannel <- result
+		close(storeChannel)
+	}()
+
+	return storeChannel
+}
+
 func (s SqlChannelStore) GetFromMaster(id string) StoreChannel {
 	return s.get(id, true, false)
 }

store/sql_channel_store_test.go

@@ -1493,3 +1493,46 @@ func TestChannelStoreAnalyticsDeletedTypeCount(t *testing.T) {
 		}
 	}
 }
+
+func TestChannelStoreGetPinnedPosts(t *testing.T) {
+	Setup()
+
+	o1 := Must(store.Channel().Save(&model.Channel{
+		TeamId:      model.NewId(),
+		DisplayName: "Name",
+		Name:        "a" + model.NewId() + "b",
+		Type:        model.CHANNEL_OPEN,
+	})).(*model.Channel)
+
+	p1 := Must(store.Post().Save(&model.Post{
+		UserId:    model.NewId(),
+		ChannelId: o1.Id,
+		Message:   "test",
+		IsPinned:  true,
+	})).(*model.Post)
+
+	if r1 := <-store.Channel().GetPinnedPosts(o1.Id); r1.Err != nil {
+		t.Fatal(r1.Err)
+	} else if r1.Data.(*model.PostList).Posts[p1.Id] == nil {
+		t.Fatal("didn't return relevant pinned posts")
+	}
+
+	o2 := Must(store.Channel().Save(&model.Channel{
+		TeamId:      model.NewId(),
+		DisplayName: "Name",
+		Name:        "a" + model.NewId() + "b",
+		Type:        model.CHANNEL_OPEN,
+	})).(*model.Channel)
+
+	Must(store.Post().Save(&model.Post{
+		UserId:    model.NewId(),
+		ChannelId: o2.Id,
+		Message:   "test",
+	}))
+
+	if r2 := <-store.Channel().GetPinnedPosts(o2.Id); r2.Err != nil {
+		t.Fatal(r2.Err)
+	} else if len(r2.Data.(*model.PostList).Posts) != 0 {
+		t.Fatal("wasn't supposed to return posts")
+	}
+}

store/sql_post_store.go

@@ -64,6 +64,7 @@ func (s SqlPostStore) CreateIndexesIfNotExists() {
 	s.CreateIndexIfNotExists("idx_posts_channel_id", "Posts", "ChannelId")
 	s.CreateIndexIfNotExists("idx_posts_root_id", "Posts", "RootId")
 	s.CreateIndexIfNotExists("idx_posts_user_id", "Posts", "UserId")
+	s.CreateIndexIfNotExists("idx_posts_is_pinned", "Posts", "IsPinned")
 
 	s.CreateFullTextIndexIfNotExists("idx_posts_message_txt", "Posts", "Message")
 	s.CreateFullTextIndexIfNotExists("idx_posts_hashtags_txt", "Posts", "Hashtags")

store/store.go

@@ -118,6 +118,7 @@ type ChannelStore interface {
 	InvalidateMemberCount(channelId string)
 	GetMemberCountFromCache(channelId string) int64
 	GetMemberCount(channelId string, allowFromCache bool) StoreChannel
+	GetPinnedPosts(channelId string) StoreChannel
 	RemoveMember(channelId string, userId string) StoreChannel
 	PermanentDeleteMembersByUser(userId string) StoreChannel
 	PermanentDeleteMembersByChannel(channelId string) StoreChannel

webapp/actions/post_actions.jsx

@@ -68,6 +68,14 @@ export function handleNewPost(post, msg) {
     });
 }
 
+export function pinPost(channelId, postId) {
+    AsyncClient.pinPost(channelId, postId);
+}
+
+export function unpinPost(channelId, postId) {
+    AsyncClient.unpinPost(channelId, postId);
+}
+
 export function flagPost(postId) {
     trackEvent('api', 'api_posts_flagged');
     AsyncClient.savePreference(Preferences.CATEGORY_FLAGGED_POST, postId, 'true');
@@ -96,7 +104,8 @@ export function getFlaggedPosts() {
             AppDispatcher.handleServerAction({
                 type: ActionTypes.RECEIVED_SEARCH,
                 results: data,
-                is_flagged_posts: true
+                is_flagged_posts: true,
+                is_pinned_posts: false
             });
 
             loadProfilesForPosts(data.posts);
@@ -107,6 +116,31 @@ export function getFlaggedPosts() {
     );
 }
 
+export function getPinnedPosts(channelId) {
+    Client.getPinnedPosts(channelId,
+        (data) => {
+            AppDispatcher.handleServerAction({
+                type: ActionTypes.RECEIVED_SEARCH_TERM,
+                term: null,
+                do_search: false,
+                is_mention_search: false
+            });
+
+            AppDispatcher.handleServerAction({
+                type: ActionTypes.RECEIVED_SEARCH,
+                results: data,
+                is_flagged_posts: false,
+                is_pinned_posts: true
+            });
+
+            loadProfilesForPosts(data.posts);
+        },
+        (err) => {
+            AsyncClient.dispatchError(err, 'getPinnedPosts');
+        }
+    );
+}
+
 export function loadPosts(channelId = ChannelStore.getCurrentId(), isPost = false) {
     const postList = PostStore.getAllPosts(channelId);
     const latestPostTime = PostStore.getLatestPostFromPageTime(channelId);

webapp/client/client.jsx

@@ -1802,6 +1802,15 @@ export default class Client {
         this.trackEvent('api', 'api_posts_get_flagged', {team_id: this.getTeamId()});
     }
 
+    getPinnedPosts(channelId, success, error) {
+        request.
+            get(`${this.getChannelNeededRoute(channelId)}/pinned`).
+            set(this.defaultHeaders).
+            type('application/json').
+            accept('application/json').
+            end(this.handleResponse.bind(this, 'getPinnedPosts', success, error));
+    }
+
     getFileInfosForPost(channelId, postId, success, error) {
         request.
             get(`${this.getChannelNeededRoute(channelId)}/posts/${postId}/get_file_infos`).
@@ -2187,6 +2196,24 @@ export default class Client {
         });
     }
 
+    pinPost(channelId, postId, success, error) {
+        request.
+            post(`${this.getChannelNeededRoute(channelId)}/posts/${postId}/pin`).
+            set(this.defaultHeaders).
+            accept('application/json').
+            send().
+            end(this.handleResponse.bind(this, 'pinPost', success, error));
+    }
+
+    unpinPost(channelId, postId, success, error) {
+        request.
+            post(`${this.getChannelNeededRoute(channelId)}/posts/${postId}/unpin`).
+            set(this.defaultHeaders).
+            accept('application/json').
+            send().
+            end(this.handleResponse.bind(this, 'unpinPost', success, error));
+    }
+
     saveReaction(channelId, reaction, success, error) {
         request.
             post(`${this.getChannelNeededRoute(channelId)}/posts/${reaction.post_id}/reactions/save`).

webapp/components/channel_header.jsx

@@ -30,7 +30,7 @@ import * as Utils from 'utils/utils.jsx';
 import * as ChannelUtils from 'utils/channel_utils.jsx';
 import {getSiteURL} from 'utils/url.jsx';
 import * as TextFormatting from 'utils/text_formatting.jsx';
-import {getFlaggedPosts} from 'actions/post_actions.jsx';
+import {getFlaggedPosts, getPinnedPosts} from 'actions/post_actions.jsx';
 
 import AppDispatcher from 'dispatcher/app_dispatcher.jsx';
 
@@ -53,6 +53,7 @@ export default class ChannelHeader extends React.Component {
         this.hideRenameChannelModal = this.hideRenameChannelModal.bind(this);
         this.handleShortcut = this.handleShortcut.bind(this);
         this.getFlagged = this.getFlagged.bind(this);
+        this.getPinnedPosts = this.getPinnedPosts.bind(this);
         this.initWebrtc = this.initWebrtc.bind(this);
         this.onBusy = this.onBusy.bind(this);
         this.openDirectMessageModal = this.openDirectMessageModal.bind(this);
@@ -158,6 +159,15 @@ export default class ChannelHeader extends React.Component {
         }
     }
 
+    getPinnedPosts(e) {
+        e.preventDefault();
+        if (SearchStore.isPinnedPosts) {
+            GlobalActions.toggleSideBarAction(false);
+        } else {
+            getPinnedPosts(this.props.channelId);
+        }
+    }
+
     getFlagged(e) {
         e.preventDefault();
         if (SearchStore.isFlaggedPosts) {
@@ -211,6 +221,7 @@ export default class ChannelHeader extends React.Component {
 
     render() {
         const flagIcon = Constants.FLAG_ICON_SVG;
+        const pinIcon = Constants.PIN_ICON;
 
         if (!this.validState()) {
             // Use an empty div to make sure the header's height stays constant
@@ -762,8 +773,20 @@ export default class ChannelHeader extends React.Component {
                                     </OverlayTrigger>
                                 </div>
                             </th>
-                            <th className='header-list__members'>
+                            <th className='header-list__right'>
                                 {popoverListMembers}
+                                <a
+                                    href='#'
+                                    type='button'
+                                    id='pinned-posts-button'
+                                    className='pinned-posts-button'
+                                    onClick={this.getPinnedPosts}
+                                >
+                                    <span
+                                        dangerouslySetInnerHTML={{__html: pinIcon}}
+                                        aria-hidden='true'
+                                    />
+                                </a>
                             </th>
                             <th className='search-bar__container'>
                                 <NavbarSearchBox

webapp/components/navbar.jsx

@@ -19,12 +19,15 @@ import UserStore from 'stores/user_store.jsx';
 import ChannelStore from 'stores/channel_store.jsx';
 import TeamStore from 'stores/team_store.jsx';
 import PreferenceStore from 'stores/preference_store.jsx';
+import SearchStore from 'stores/search_store.jsx';
 
 import ChannelSwitchModal from './channel_switch_modal.jsx';
 
 import * as Utils from 'utils/utils.jsx';
 import * as ChannelUtils from 'utils/channel_utils.jsx';
 import * as ChannelActions from 'actions/channel_actions.jsx';
+import * as GlobalActions from 'actions/global_actions.jsx';
+import {getPinnedPosts} from 'actions/post_actions.jsx';
 
 import Constants from 'utils/constants.jsx';
 const ActionTypes = Constants.ActionTypes;
@@ -62,6 +65,7 @@ export default class Navbar extends React.Component {
         this.hideChannelSwitchModal = this.hideChannelSwitchModal.bind(this);
 
         this.openDirectMessageModal = this.openDirectMessageModal.bind(this);
+        this.getPinnedPosts = this.getPinnedPosts.bind(this);
 
         const state = this.getStateFromStores();
         state.showEditChannelPurposeModal = false;
@@ -216,6 +220,15 @@ export default class Navbar extends React.Component {
         });
     }
 
+    getPinnedPosts(e) {
+        e.preventDefault();
+        if (SearchStore.isPinnedPosts) {
+            GlobalActions.toggleSideBarAction(false);
+        } else {
+            getPinnedPosts(this.state.channel.id);
+        }
+    }
+
     toggleFavorite = (e) => {
         e.preventDefault();
 
@@ -244,6 +257,7 @@ export default class Navbar extends React.Component {
             }
 
             let viewInfoOption;
+            let viewPinnedPostsOption;
             let addMembersOption;
             let manageMembersOption;
             let setChannelHeaderOption;
@@ -335,6 +349,21 @@ export default class Navbar extends React.Component {
                     </li>
                 );
 
+                viewPinnedPostsOption = (
+                    <li role='presentation'>
+                        <a
+                            role='menuitem'
+                            href='#'
+                            onClick={this.getPinnedPosts}
+                        >
+                            <FormattedMessage
+                                id='navbar.viewPinnedPosts'
+                                defaultMessage='View Pinned Posts'
+                            />
+                        </a>
+                    </li>
+                );
+
                 if (!ChannelStore.isDefault(channel)) {
                     addMembersOption = (
                         <li role='presentation'>
@@ -561,6 +590,7 @@ export default class Navbar extends React.Component {
                             role='menu'
                         >
                             {viewInfoOption}
+                            {viewPinnedPostsOption}
                             {notificationPreferenceOption}
                             {addMembersOption}
                             {manageMembersOption}

webapp/components/needs_team.jsx

@@ -12,6 +12,7 @@ import TeamStore from 'stores/team_store.jsx';
 import UserStore from 'stores/user_store.jsx';
 import PreferenceStore from 'stores/preference_store.jsx';
 import ChannelStore from 'stores/channel_store.jsx';
+import PostStore from 'stores/post_store.jsx';
 import * as GlobalActions from 'actions/global_actions.jsx';
 import {startPeriodicStatusUpdates, stopPeriodicStatusUpdates} from 'actions/status_actions.jsx';
 import Constants from 'utils/constants.jsx';
@@ -173,12 +174,25 @@ export default class NeedsTeam extends React.Component {
                 </div>
             );
         }
+
+        let channel = ChannelStore.getByName(this.props.params.channel);
+        if (channel == null) {
+            // the permalink view is not really tied to a particular channel but still needs it
+            const postId = PostStore.getFocusedPostId();
+            const post = PostStore.getEarliestPostFromPage(postId);
+
+            // the post take some time before being available on page load
+            if (post != null) {
+                channel = ChannelStore.get(post.channel_id);
+            }
+        }
+
         return (
             <div className='channel-view'>
                 <ErrorBar/>
                 <WebrtcNotification/>
                 <div className='container-fluid'>
-                    <SidebarRight/>
+                    <SidebarRight channel={channel}/>
                     <SidebarRightMenu teamType={this.state.team.type}/>
                     <WebrtcSidebar/>
                     {content}

webapp/components/popover_list_members.jsx

@@ -233,7 +233,7 @@ export default class PopoverListMembers extends React.Component {
         }
 
         return (
-            <div>
+            <div className='member-popover__container'>
                 <div
                     id='member_popover'
                     className='member-popover__trigger'
@@ -243,13 +243,11 @@ export default class PopoverListMembers extends React.Component {
                         AsyncClient.getProfilesInChannel(this.props.channel.id, 0);
                     }}
                 >
-                    <div>
-                        {countText}
-                        <span
-                            className='fa fa-user'
-                            aria-hidden='true'
-                        />
-                    </div>
+                    {countText}
+                    <span
+                        className='fa fa-user'
+                        aria-hidden='true'
+                    />
                 </div>
                 <Overlay
                     rootClose={true}

webapp/components/post_view/components/post_info.jsx

@@ -26,6 +26,8 @@ export default class PostInfo extends React.Component {
         this.removePost = this.removePost.bind(this);
         this.flagPost = this.flagPost.bind(this);
         this.unflagPost = this.unflagPost.bind(this);
+        this.pinPost = this.pinPost.bind(this);
+        this.unpinPost = this.unpinPost.bind(this);
 
         this.canEdit = false;
         this.canDelete = false;
@@ -148,6 +150,42 @@ export default class PostInfo extends React.Component {
             );
         }
 
+        if (this.props.post.is_pinned) {
+            dropdownContents.push(
+                <li
+                    key='unpinLink'
+                    role='presentation'
+                >
+                    <a
+                        href='#'
+                        onClick={this.unpinPost}
+                    >
+                        <FormattedMessage
+                            id='post_info.unpin'
+                            defaultMessage='Un-pin from channel'
+                        />
+                    </a>
+                </li>
+            );
+        } else {
+            dropdownContents.push(
+                <li
+                    key='pinLink'
+                    role='presentation'
+                >
+                    <a
+                        href='#'
+                        onClick={this.pinPost}
+                    >
+                        <FormattedMessage
+                            id='post_info.pin'
+                            defaultMessage='Pin to channel'
+                        />
+                    </a>
+                </li>
+            );
+        }
+
         if (this.canDelete) {
             dropdownContents.push(
                 <li
@@ -250,6 +288,16 @@ export default class PostInfo extends React.Component {
         );
     }
 
+    pinPost(e) {
+        e.preventDefault();
+        PostActions.pinPost(this.props.post.channel_id, this.props.post.id);
+    }
+
+    unpinPost(e) {
+        e.preventDefault();
+        PostActions.unpinPost(this.props.post.channel_id, this.props.post.id);
+    }
+
     flagPost(e) {
         e.preventDefault();
         PostActions.flagPost(this.props.post.id);
@@ -374,6 +422,18 @@ export default class PostInfo extends React.Component {
             );
         }
 
+        let pinnedBadge;
+        if (post.is_pinned) {
+            pinnedBadge = (
+                <span className='post__pinned-badge'>
+                    <FormattedMessage
+                        id='post_info.pinned'
+                        defaultMessage='Pinned'
+                    />
+                </span>
+            );
+        }
+
         return (
             <ul className='post__header--info'>
                 <li className='col'>
@@ -384,6 +444,7 @@ export default class PostInfo extends React.Component {
                         useMilitaryTime={this.props.useMilitaryTime}
                         postId={post.id}
                     />
+                    {pinnedBadge}
                     {flagTrigger}
                 </li>
                 {options}

webapp/components/rhs_comment.jsx

@@ -10,7 +10,7 @@ import ReactionListContainer from 'components/post_view/components/reaction_list
 import RhsDropdown from 'components/rhs_dropdown.jsx';
 
 import * as GlobalActions from 'actions/global_actions.jsx';
-import {flagPost, unflagPost} from 'actions/post_actions.jsx';
+import {flagPost, unflagPost, pinPost, unpinPost} from 'actions/post_actions.jsx';
 
 import TeamStore from 'stores/team_store.jsx';
 
@@ -36,6 +36,8 @@ export default class RhsComment extends React.Component {
         this.removePost = this.removePost.bind(this);
         this.flagPost = this.flagPost.bind(this);
         this.unflagPost = this.unflagPost.bind(this);
+        this.pinPost = this.pinPost.bind(this);
+        this.unpinPost = this.unpinPost.bind(this);
 
         this.canEdit = false;
         this.canDelete = false;
@@ -128,6 +130,16 @@ export default class RhsComment extends React.Component {
         unflagPost(this.props.post.id);
     }
 
+    pinPost(e) {
+        e.preventDefault();
+        pinPost(this.props.post.channel_id, this.props.post.id);
+    }
+
+    unpinPost(e) {
+        e.preventDefault();
+        unpinPost(this.props.post.channel_id, this.props.post.id);
+    }
+
     createDropdown() {
         const post = this.props.post;
 
@@ -195,6 +207,42 @@ export default class RhsComment extends React.Component {
             </li>
         );
 
+        if (post.is_pinned) {
+            dropdownContents.push(
+                <li
+                    key='rhs-comment-unpin'
+                    role='presentation'
+                >
+                    <a
+                        href='#'
+                        onClick={this.unpinPost}
+                    >
+                        <FormattedMessage
+                            id='rhs_root.unpin'
+                            defaultMessage='Un-pin from channel'
+                        />
+                    </a>
+                </li>
+            );
+        } else {
+            dropdownContents.push(
+                <li
+                    key='rhs-comment-pin'
+                    role='presentation'
+                >
+                    <a
+                        href='#'
+                        onClick={this.pinPost}
+                    >
+                        <FormattedMessage
+                            id='rhs_root.pin'
+                            defaultMessage='Pin to channel'
+                        />
+                    </a>
+                </li>
+            );
+        }
+
         if (this.canDelete) {
             dropdownContents.push(
                 <li
@@ -503,6 +551,18 @@ export default class RhsComment extends React.Component {
             );
         }
 
+        let pinnedBadge;
+        if (post.is_pinned) {
+            pinnedBadge = (
+                <span className='post__pinned-badge'>
+                    <FormattedMessage
+                        id='post_info.pinned'
+                        defaultMessage='Pinned'
+                    />
+                </span>
+            );
+        }
+
         const timeOptions = {
             day: 'numeric',
             month: 'short',
@@ -524,6 +584,7 @@ export default class RhsComment extends React.Component {
                             {botIndicator}
                             <li className='col'>
                                 {this.renderTimeTag(post, timeOptions)}
+                                {pinnedBadge}
                                 {flagTrigger}
                             </li>
                             {options}

webapp/components/rhs_root_post.jsx

@@ -14,7 +14,7 @@ import UserStore from 'stores/user_store.jsx';
 import TeamStore from 'stores/team_store.jsx';
 
 import * as GlobalActions from 'actions/global_actions.jsx';
-import {flagPost, unflagPost} from 'actions/post_actions.jsx';
+import {flagPost, unflagPost, pinPost, unpinPost} from 'actions/post_actions.jsx';
 
 import * as Utils from 'utils/utils.jsx';
 import * as PostUtils from 'utils/post_utils.jsx';
@@ -35,6 +35,8 @@ export default class RhsRootPost extends React.Component {
         this.handlePermalink = this.handlePermalink.bind(this);
         this.flagPost = this.flagPost.bind(this);
         this.unflagPost = this.unflagPost.bind(this);
+        this.pinPost = this.pinPost.bind(this);
+        this.unpinPost = this.unpinPost.bind(this);
 
         this.canEdit = false;
         this.canDelete = false;
@@ -143,6 +145,16 @@ export default class RhsRootPost extends React.Component {
             );
     }
 
+    pinPost(e) {
+        e.preventDefault();
+        pinPost(this.props.post.channel_id, this.props.post.id);
+    }
+
+    unpinPost(e) {
+        e.preventDefault();
+        unpinPost(this.props.post.channel_id, this.props.post.id);
+    }
+
     render() {
         const post = this.props.post;
         const user = this.props.user;
@@ -240,6 +252,42 @@ export default class RhsRootPost extends React.Component {
             </li>
         );
 
+        if (post.is_pinned) {
+            dropdownContents.push(
+                <li
+                    key='rhs-root-unpin'
+                    role='presentation'
+                >
+                    <a
+                        href='#'
+                        onClick={this.unpinPost}
+                    >
+                        <FormattedMessage
+                            id='rhs_root.unpin'
+                            defaultMessage='Un-pin from channel'
+                        />
+                    </a>
+                </li>
+            );
+        } else {
+            dropdownContents.push(
+                <li
+                    key='rhs-root-pin'
+                    role='presentation'
+                >
+                    <a
+                        href='#'
+                        onClick={this.pinPost}
+                    >
+                        <FormattedMessage
+                            id='rhs_root.pin'
+                            defaultMessage='Pin to channel'
+                        />
+                    </a>
+                </li>
+            );
+        }
+
         if (this.canDelete) {
             dropdownContents.push(
                 <li
@@ -450,6 +498,18 @@ export default class RhsRootPost extends React.Component {
             flagFunc = this.flagPost;
         }
 
+        let pinnedBadge;
+        if (post.is_pinned) {
+            pinnedBadge = (
+                <span className='post__pinned-badge'>
+                    <FormattedMessage
+                        id='post_info.pinned'
+                        defaultMessage='Pinned'
+                    />
+                </span>
+            );
+        }
+
         const timeOptions = {
             day: 'numeric',
             month: 'short',
@@ -470,6 +530,7 @@ export default class RhsRootPost extends React.Component {
                             {botIndicator}
                             <li className='col'>
                                 {this.renderTimeTag(post, timeOptions)}
+                                {pinnedBadge}
                                 <OverlayTrigger
                                     key={'rootpostflagtooltipkey' + flagVisible}
                                     delayShow={Constants.OVERLAY_TIME_DELAY}

webapp/components/search_results.jsx

@@ -213,6 +213,31 @@ export default class SearchResults extends React.Component {
                     </ul>
                 </div>
             );
+        } else if (this.props.isPinnedPosts && noResults) {
+            ctls = (
+                <div className='sidebar--right__subheader'>
+                    <ul>
+                        <li>
+                            <FormattedHTMLMessage
+                                id='search_results.usagePin1'
+                                defaultMessage='There are no pinned messages yet.'
+                            />
+                        </li>
+                        <li>
+                            <FormattedHTMLMessage
+                                id='search_results.usagePin2'
+                                defaultMessage={'You can pin a message by clicking the "Pin to channel" option from the message\'s menu.'}
+                            />
+                        </li>
+                        <li>
+                            <FormattedHTMLMessage
+                                id='search_results.usagePin3'
+                                defaultMessage='Pinned messages are accessible by all channel members and are a way to mark messages for future reference.'
+                            />
+                        </li>
+                    </ul>
+                </div>
+            );
         } else if (!searchTerm && noResults) {
             ctls = (
                 <div className='sidebar--right__subheader'>
@@ -289,6 +314,8 @@ export default class SearchResults extends React.Component {
                         toggleSize={this.props.toggleSize}
                         shrink={this.props.shrink}
                         isFlaggedPosts={this.props.isFlaggedPosts}
+                        isPinnedPosts={this.props.isPinnedPosts}
+                        channelDisplayName={this.props.channelDisplayName}
                     />
                     <div
                         id='search-items-container'
@@ -307,5 +334,7 @@ SearchResults.propTypes = {
     useMilitaryTime: React.PropTypes.bool.isRequired,
     toggleSize: React.PropTypes.func,
     shrink: React.PropTypes.func,
-    isFlaggedPosts: React.PropTypes.bool
+    isFlaggedPosts: React.PropTypes.bool,
+    isPinnedPosts: React.PropTypes.bool,
+    channelDisplayName: React.PropTypes.string.isRequired
 };

webapp/components/search_results_header.jsx

@@ -79,6 +79,16 @@ export default class SearchResultsHeader extends React.Component {
                     defaultMessage='Flagged Posts'
                 />
             );
+        } else if (this.props.isPinnedPosts) {
+            title = (
+                <FormattedMessage
+                    id='search_header.title4'
+                    defaultMessage='Pinned posts in {channelDisplayName}'
+                    values={{
+                        channelDisplayName: this.props.channelDisplayName
+                    }}
+                />
+            );
         }
 
         return (
@@ -131,5 +141,7 @@ SearchResultsHeader.propTypes = {
     isMentionSearch: React.PropTypes.bool,
     toggleSize: React.PropTypes.func,
     shrink: React.PropTypes.func,
-    isFlaggedPosts: React.PropTypes.bool
+    isFlaggedPosts: React.PropTypes.bool,
+    isPinnedPosts: React.PropTypes.bool,
+    channelDisplayName: React.PropTypes.string.isRequired
 };

webapp/components/search_results_item.jsx

@@ -289,6 +289,18 @@ export default class SearchResultsItem extends React.Component {
             );
         }
 
+        let pinnedBadge;
+        if (post.is_pinned) {
+            pinnedBadge = (
+                <span className='post__pinned-badge'>
+                    <FormattedMessage
+                        id='post_info.pinned'
+                        defaultMessage='Pinned'
+                    />
+                </span>
+            );
+        }
+
         return (
             <div className='search-item__container'>
                 <div className='date-separator'>
@@ -322,6 +334,7 @@ export default class SearchResultsItem extends React.Component {
                                 {botIndicator}
                                 <li className='col'>
                                     {this.renderTimeTag(post)}
+                                    {pinnedBadge}
                                     {flagContent}
                                 </li>
                                 {rhsControls}

webapp/components/sidebar_right.jsx

@@ -11,13 +11,13 @@ import UserStore from 'stores/user_store.jsx';
 import PreferenceStore from 'stores/preference_store.jsx';
 import WebrtcStore from 'stores/webrtc_store.jsx';
 
-import {getFlaggedPosts} from 'actions/post_actions.jsx';
+import {getFlaggedPosts, getPinnedPosts} from 'actions/post_actions.jsx';
 import {trackEvent} from 'actions/diagnostics_actions.jsx';
 
 import * as Utils from 'utils/utils.jsx';
 import Constants from 'utils/constants.jsx';
 
-import React from 'react';
+import React, {PropTypes} from 'react';
 
 export default class SidebarRight extends React.Component {
     constructor(props) {
@@ -27,6 +27,7 @@ export default class SidebarRight extends React.Component {
 
         this.onPreferenceChange = this.onPreferenceChange.bind(this);
         this.onSelectedChange = this.onSelectedChange.bind(this);
+        this.onPostPinnedChange = this.onPostPinnedChange.bind(this);
         this.onSearchChange = this.onSearchChange.bind(this);
         this.onUserChange = this.onUserChange.bind(this);
         this.onShowSearch = this.onShowSearch.bind(this);
@@ -39,6 +40,7 @@ export default class SidebarRight extends React.Component {
             searchVisible: SearchStore.getSearchResults() !== null,
             isMentionSearch: SearchStore.getIsMentionSearch(),
             isFlaggedPosts: SearchStore.getIsFlaggedPosts(),
+            isPinnedPosts: SearchStore.getIsPinnedPosts(),
             postRightVisible: Boolean(PostStore.getSelectedPost()),
             expanded: false,
             fromSearch: false,
@@ -50,6 +52,7 @@ export default class SidebarRight extends React.Component {
     componentDidMount() {
         SearchStore.addSearchChangeListener(this.onSearchChange);
         PostStore.addSelectedPostChangeListener(this.onSelectedChange);
+        PostStore.addPostPinnedChangeListener(this.onPostPinnedChange);
         SearchStore.addShowSearchListener(this.onShowSearch);
         UserStore.addChangeListener(this.onUserChange);
         PreferenceStore.addChangeListener(this.onPreferenceChange);
@@ -59,6 +62,7 @@ export default class SidebarRight extends React.Component {
     componentWillUnmount() {
         SearchStore.removeSearchChangeListener(this.onSearchChange);
         PostStore.removeSelectedPostChangeListener(this.onSelectedChange);
+        PostStore.removePostPinnedChangeListener(this.onPostPinnedChange);
         SearchStore.removeShowSearchListener(this.onShowSearch);
         UserStore.removeChangeListener(this.onUserChange);
         PreferenceStore.removeChangeListener(this.onPreferenceChange);
@@ -137,6 +141,12 @@ export default class SidebarRight extends React.Component {
         });
     }
 
+    onPostPinnedChange() {
+        if (this.props.channel && this.state.isPinnedPosts) {
+            getPinnedPosts(this.props.channel.id);
+        }
+    }
+
     onShrink() {
         this.setState({
             expanded: false
@@ -147,7 +157,8 @@ export default class SidebarRight extends React.Component {
         this.setState({
             searchVisible: SearchStore.getSearchResults() !== null,
             isMentionSearch: SearchStore.getIsMentionSearch(),
-            isFlaggedPosts: SearchStore.getIsFlaggedPosts()
+            isFlaggedPosts: SearchStore.getIsFlaggedPosts(),
+            isPinnedPosts: SearchStore.getIsPinnedPosts()
         });
     }
 
@@ -182,9 +193,11 @@ export default class SidebarRight extends React.Component {
                 <SearchResults
                     isMentionSearch={this.state.isMentionSearch}
                     isFlaggedPosts={this.state.isFlaggedPosts}
+                    isPinnedPosts={this.state.isPinnedPosts}
                     useMilitaryTime={this.state.useMilitaryTime}
                     toggleSize={this.toggleSize}
                     shrink={this.onShrink}
+                    channelDisplayName={this.props.channel ? this.props.channel.display_name : ''}
                 />
             );
         } else if (this.state.postRightVisible) {
@@ -222,3 +235,7 @@ export default class SidebarRight extends React.Component {
         );
     }
 }
+
+SidebarRight.propTypes = {
+    channel: PropTypes.object
+};

webapp/i18n/en.json

@@ -1670,6 +1670,7 @@
   "navbar.toggle1": "Toggle sidebar",
   "navbar.toggle2": "Toggle sidebar",
   "navbar.viewInfo": "View Info",
+  "navbar.viewPinnedPosts": "View Pinned Posts",
   "navbar_dropdown.about": "About Mattermost",
   "navbar_dropdown.accountSettings": "Account Settings",
   "navbar_dropdown.console": "System Console",
@@ -1726,6 +1727,9 @@
   "post_info.permalink": "Permalink",
   "post_info.reply": "Reply",
   "post_info.system": "System",
+  "post_info.pin": "Pin to channel",
+  "post_info.unpin": "Un-pin from channel",
+  "post_info.pinned": "Pinned",
   "post_message_view.edited": "(edited)",
   "posts_view.loadMore": "Load more messages",
   "posts_view.newMsg": "New Messages",
@@ -1778,11 +1782,14 @@
   "rhs_root.mobile.flag": "Flag",
   "rhs_root.mobile.unflag": "Unflag",
   "rhs_root.permalink": "Permalink",
+  "rhs_root.pin": "Pin to channel",
+  "rhs_root.unpin": "Un-pin from channel",
   "search_bar.search": "Search",
   "search_bar.usage": "<h4>Search Options</h4><ul><li><span>Use </span><b>\"quotation marks\"</b><span> to search for phrases</span></li><li><span>Use </span><b>from:</b><span> to find posts from specific users and </span><b>in:</b><span> to find posts in specific channels</span></li></ul>",
   "search_header.results": "Search Results",
   "search_header.title2": "Recent Mentions",
   "search_header.title3": "Flagged Posts",
+  "search_header.title4": "Pinned posts in {channelDisplayName}",
   "search_item.direct": "Direct Message (with {username})",
   "search_item.jump": "Jump",
   "search_results.because": "<ul><li>If you're searching a partial phrase (ex. searching \"rea\", looking for \"reach\" or \"reaction\"), append a * to your search term.</li><li>Two letter searches and common words like \"this\", \"a\" and \"is\" won't appear in search results due to excessive results returned.</li></ul>",
@@ -1792,6 +1799,9 @@
   "search_results.usageFlag2": "You can add a flag to messages and comments by clicking the ",
   "search_results.usageFlag3": " icon next to the timestamp.",
   "search_results.usageFlag4": "Flags are a way to mark messages for follow up. Your flags are personal, and cannot be seen by other users.",
+  "search_results.usagePin1": "There are no pinned messages yet.",
+  "search_results.usagePin2": "You can pin a message by clicking the \"Pin to channel\" option from the message's menu.",
+  "search_results.usagePin3": "Pinned messages are accessible by all channel members and are a way to mark messages for future reference.",
   "setting_item_max.cancel": "Cancel",
   "setting_item_max.save": "Save",
   "setting_item_min.edit": "Edit",

webapp/sass/layout/_content.scss

@@ -9,10 +9,20 @@
         .search-btns {
             display: none;
         }
-        .header-list__members {
+        .header-list__right {
+            // the negative margin-right is used
+            // to prevent the icons in the header from
+            // moving to the left when the RHS is open
+            //
+            // the below z-index is used to ensure the icons
+            // stays on the top and don't get hidden by the
+            // search's input block
+            position: relative;
+            z-index: 6;
+
             margin-right: -18px;
-            float: right;
             padding-right: 0px !important;
+            float: right;
         }
     }
 
@@ -23,10 +33,20 @@
         .search-btns {
             display: none;
         }
-        .header-list__members {
+        .header-list__right {
+            // the negative margin-right is used
+            // to prevent the icons in the header from
+            // moving to the left when the RHS is open
+            //
+            // the below z-index is used to ensure the icons
+            // stays on the top and don't get hidden by the
+            // search's input block
+            position: relative;
+            z-index: 6;
+
             margin-right: -18px;
-            float: right;
             padding-right: 0px !important;
+            float: right
         }
     }
 }

webapp/sass/layout/_headers.scss

@@ -7,26 +7,43 @@
     line-height: 56px;
     width: 100%;
 
-    .member-popover__trigger {
+    .member-popover__trigger,
+    .pinned-posts-button {
+        display: inline-block;
+        min-width: 30px;
         cursor: pointer;
-        min-width: 60px;
-        padding-right: 10px;
-        text-align: right;
+        margin-left: 10px;
+        text-align: center;
         white-space: nowrap;
 
         .fa {
             font-size: 16px;
+        }
+    }
+
+    .member-popover__container,
+    .member-popover__trigger {
+        display: inline;
+    }
+
+    .member-popover__trigger {
+        .fa {
             margin-left: 4px;
         }
     }
 
+    .pinned-posts-button svg {
+        position: relative;
+        top: 2px;
+    }
+
     &.alt {
         margin: 0;
 
         th {
             font-weight: normal !important;
 
-            &.header-list__members {
+            &.header-list__right {
                 padding-right: 4px;
             }
         }

webapp/sass/layout/_post.scss

@@ -1343,15 +1343,23 @@
     }
 }
 
-.bot-indicator {
+.bot-indicator,
+.post__pinned-badge {
     border-radius: 2px;
     font-family: inherit;
     font-size: 10px;
     font-weight: 600;
-    margin: 2px 10px 0 -4px;
     padding: 1px 4px;
 }
 
+.bot-indicator {
+    margin: 2px 10px 0 -4px;
+}
+
+.post__pinned-badge {
+    margin-left: 7px;
+}
+
 .permalink-text {
     overflow: hidden;
 }

webapp/sass/responsive/_desktop.scss

@@ -76,6 +76,23 @@
                 }
             }
         }
+
+        &.move--left {
+            .post {
+                &.post--root,
+                &.other--root {
+                    .post__header {
+                        padding-right: 70px;
+                    }
+                }
+
+                &.post--comment {
+                    .post__header {
+                        padding-right: 70px;
+                    }
+                }
+            }
+        }
     }
 }
 

webapp/sass/responsive/_mobile.scss

@@ -252,6 +252,7 @@
                     }
                 }
             }
+
             blockquote {
                 margin-top: 0;
             }
@@ -273,6 +274,7 @@
 
         .post__header {
             margin-bottom: 0;
+            padding-right: 70px;
 
             .col__reply {
                 top: -3px;

webapp/sass/responsive/_tablet.scss

@@ -127,6 +127,15 @@
                 top: auto;
             }
         }
+
+        &.move--left,
+        &.webrtc--show,
+        &.move--right {
+            .header-list__right {
+                // hide it behind the RHS
+                z-index: -1;
+            }
+        }
     }
     .post {
         .attachment {
@@ -182,6 +191,14 @@
                 }
             }
         }
+
+        .sidebar--right__title {
+            display: inline-block;
+            max-width: 300px;
+            white-space: nowrap;
+            overflow: hidden;
+            text-overflow: ellipsis;
+        }
     }
 
     .inner-wrap {
@@ -213,6 +230,11 @@
                 }
             }
 
+            .post__pinned-badge {
+                margin-left: 0;
+                margin-right: 5px;
+            }
+
             &:not(.post--thread) {
                 padding: 5px .5em 0 77px;
 
@@ -359,9 +381,16 @@
                 }
 
                 .post__header {
+                    float: left;
+                    padding-top: 3px;
+
                     .col__reply {
                         top: -21px;
                     }
+
+                    .post__pinned-badge {
+                        margin-right: 5px;
+                    }
                 }
 
                 &:not(.post--compact) {
@@ -381,6 +410,12 @@
                     }
                 }
             }
+
+            &.post--comment:not(.post--compact) {
+                .post__pinned-badge {
+                    margin-left: 10px;
+                }
+            }
         }
     }
 }

webapp/stores/post_store.jsx

@@ -16,6 +16,7 @@ const FOCUSED_POST_CHANGE = 'focused_post_change';
 const EDIT_POST_EVENT = 'edit_post';
 const POSTS_VIEW_JUMP_EVENT = 'post_list_jump';
 const SELECTED_POST_CHANGE_EVENT = 'selected_post_change';
+const POST_PINNED_CHANGE_EVENT = 'post_pinned_change';
 
 class PostStoreClass extends EventEmitter {
     constructor() {
@@ -259,22 +260,42 @@ class PostStoreClass extends EventEmitter {
         this.postsInfo[id].postList = combinedPosts;
     }
 
+    focusedPostListHasPost(id) {
+        const focusedPostId = this.getFocusedPostId();
+        if (focusedPostId == null) {
+            return false;
+        }
+
+        const focusedPostList = makePostListNonNull(this.getAllPosts(focusedPostId));
+        return focusedPostList.posts.hasOwnProperty(id);
+    }
+
     storePost(post, isNewPost = false) {
-        const postList = makePostListNonNull(this.getAllPosts(post.channel_id));
+        const ids = [
+            post.channel_id
+        ];
 
-        if (post.pending_post_id !== '') {
-            this.removePendingPost(post.channel_id, post.pending_post_id);
+        // update the post in the permalink view if it's there
+        if (!isNewPost && this.focusedPostListHasPost(post.id)) {
+            ids.push(this.getFocusedPostId());
         }
 
-        post.pending_post_id = '';
+        ids.forEach((id) => {
+            const postList = makePostListNonNull(this.getAllPosts(id));
+            if (post.pending_post_id !== '') {
+                this.removePendingPost(post.channel_id, post.pending_post_id);
+            }
 
-        postList.posts[post.id] = post;
-        if (isNewPost && postList.order.indexOf(post.id) === -1) {
-            postList.order.unshift(post.id);
-        }
+            post.pending_post_id = '';
 
-        this.makePostsInfo(post.channel_id);
-        this.postsInfo[post.channel_id].postList = postList;
+            postList.posts[post.id] = post;
+            if (isNewPost && postList.order.indexOf(post.id) === -1) {
+                postList.order.unshift(post.id);
+            }
+
+            this.makePostsInfo(post.channel_id);
+            this.postsInfo[id].postList = postList;
+        });
     }
 
     storeFocusedPost(postId, channelId, postList) {
@@ -500,6 +521,18 @@ class PostStoreClass extends EventEmitter {
         this.removeListener(SELECTED_POST_CHANGE_EVENT, callback);
     }
 
+    emitPostPinnedChange() {
+        this.emit(POST_PINNED_CHANGE_EVENT);
+    }
+
+    addPostPinnedChangeListener(callback) {
+        this.on(POST_PINNED_CHANGE_EVENT, callback);
+    }
+
+    removePostPinnedChangeListener(callback) {
+        this.removeListener(POST_PINNED_CHANGE_EVENT, callback);
+    }
+
     getCurrentUsersLatestPost(channelId, rootId) {
         const userId = UserStore.getCurrentId();
 
@@ -686,6 +719,10 @@ PostStore.dispatchToken = AppDispatcher.register((payload) => {
         PostStore.storeSelectedPostId(action.postId);
         PostStore.emitSelectedPostChange(action.from_search, action.from_flagged_posts);
         break;
+    case ActionTypes.RECEIVED_POST_PINNED:
+    case ActionTypes.RECEIVED_POST_UNPINNED:
+        PostStore.emitPostPinnedChange();
+        break;
     default:
     }
 });

webapp/stores/search_store.jsx

@@ -19,6 +19,7 @@ class SearchStoreClass extends EventEmitter {
         this.searchResults = null;
         this.isMentionSearch = false;
         this.isFlaggedPosts = false;
+        this.isPinnedPosts = false;
         this.isVisible = false;
         this.searchTerm = '';
     }
@@ -83,6 +84,10 @@ class SearchStoreClass extends EventEmitter {
         return this.isFlaggedPosts;
     }
 
+    getIsPinnedPosts() {
+        return this.isPinnedPosts;
+    }
+
     storeSearchTerm(term) {
         this.searchTerm = term;
     }
@@ -91,10 +96,11 @@ class SearchStoreClass extends EventEmitter {
         return this.searchTerm;
     }
 
-    storeSearchResults(results, isMentionSearch, isFlaggedPosts) {
+    storeSearchResults(results, isMentionSearch, isFlaggedPosts, isPinnedPosts) {
         this.searchResults = results;
         this.isMentionSearch = isMentionSearch;
         this.isFlaggedPosts = isFlaggedPosts;
+        this.isPinnedPosts = isPinnedPosts;
     }
 
     deletePost(post) {
@@ -120,7 +126,7 @@ SearchStore.dispatchToken = AppDispatcher.register((payload) => {
 
     switch (action.type) {
     case ActionTypes.RECEIVED_SEARCH:
-        SearchStore.storeSearchResults(action.results, action.is_mention_search, action.is_flagged_posts);
+        SearchStore.storeSearchResults(action.results, action.is_mention_search, action.is_flagged_posts, action.is_pinned_posts);
         SearchStore.emitSearchChange();
         break;
     case ActionTypes.RECEIVED_SEARCH_TERM:

webapp/utils/async_client.jsx

@@ -1607,6 +1607,40 @@ export function deleteEmoji(id) {
     );
 }
 
+export function pinPost(channelId, reaction) {
+    Client.pinPost(
+        channelId,
+        reaction,
+        () => {
+            // the "post_edited" websocket event take cares of updating the posts
+            // the action below is mostly dispatched for the RHS to update
+            AppDispatcher.handleServerAction({
+                type: ActionTypes.RECEIVED_POST_PINNED
+            });
+        },
+        (err) => {
+            dispatchError(err, 'pinPost');
+        }
+    );
+}
+
+export function unpinPost(channelId, reaction) {
+    Client.unpinPost(
+        channelId,
+        reaction,
+        () => {
+            // the "post_edited" websocket event take cares of updating the posts
+            // the action below is mostly dispatched for the RHS to update
+            AppDispatcher.handleServerAction({
+                type: ActionTypes.RECEIVED_POST_UNPINNED
+            });
+        },
+        (err) => {
+            dispatchError(err, 'unpinPost');
+        }
+    );
+}
+
 export function saveReaction(channelId, reaction) {
     Client.saveReaction(
         channelId,

webapp/utils/constants.jsx

@@ -90,6 +90,8 @@ export const ActionTypes = keyMirror({
     RECEIVED_POST_SELECTED: null,
     RECEIVED_MENTION_DATA: null,
     RECEIVED_ADD_MENTION: null,
+    RECEIVED_POST_PINNED: null,
+    RECEIVED_POST_UNPINNED: null,
 
     RECEIVED_PROFILES: null,
     RECEIVED_PROFILES_IN_TEAM: null,
@@ -419,6 +421,7 @@ export const Constants = {
     REPLY_ICON: "<svg version='1.1' id='Layer_1' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' x='0px' y='0px'viewBox='-158 242 18 18' style='enable-background:new -158 242 18 18;' xml:space='preserve'> <path d='M-142.2,252.6c-2-3-4.8-4.7-8.3-4.8v-3.3c0-0.2-0.1-0.3-0.2-0.3s-0.3,0-0.4,0.1l-6.9,6.2c-0.1,0.1-0.1,0.2-0.1,0.3 c0,0.1,0,0.2,0.1,0.3l6.9,6.4c0.1,0.1,0.3,0.1,0.4,0.1c0.1-0.1,0.2-0.2,0.2-0.4v-3.8c4.2,0,7.4,0.4,9.6,4.4c0.1,0.1,0.2,0.2,0.3,0.2 c0,0,0.1,0,0.1,0c0.2-0.1,0.3-0.3,0.2-0.4C-140.2,257.3-140.6,255-142.2,252.6z M-150.8,252.5c-0.2,0-0.4,0.2-0.4,0.4v3.3l-6-5.5 l6-5.3v2.8c0,0.2,0.2,0.4,0.4,0.4c3.3,0,6,1.5,8,4.5c0.5,0.8,0.9,1.6,1.2,2.3C-144,252.8-147.1,252.5-150.8,252.5z'/> </svg>",
     SCROLL_BOTTOM_ICON: "<svg version='1.1' id='Layer_1' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' x='0px' y='0px'viewBox='-239 239 21 23' style='enable-background:new -239 239 21 23;' xml:space='preserve'> <path d='M-239,241.4l2.4-2.4l8.1,8.2l8.1-8.2l2.4,2.4l-10.5,10.6L-239,241.4z M-228.5,257.2l8.1-8.2l2.4,2.4l-10.5,10.6l-10.5-10.6 l2.4-2.4L-228.5,257.2z'/> </svg>",
     VIDEO_ICON: "<svg width='55%'height='100%'viewBox='0 0 13 8'> <g transform='matrix(1,0,0,1,-507,-146)'> <g transform='matrix(0.0133892,0,0,0.014499,500.635,142.838)'> <path d='M1158,547.286L1158,644.276C1158,684.245 1125.55,716.694 1085.58,716.694L579.341,716.694C539.372,716.694 506.922,684.245 506.922,644.276L506.922,306.322C506.922,266.353 539.371,233.904 579.341,233.903L1085.58,233.903C1125.55,233.904 1158,266.353 1158,306.322L1158,402.939L1359.75,253.14C1365.83,248.362 1373.43,245.973 1382.56,245.973C1386.61,245.973 1390.83,246.602 1395.22,247.859C1408.4,252.134 1414.99,259.552 1414.99,270.113L1414.99,680.485C1414.99,691.046 1408.4,698.464 1395.22,702.739C1390.83,703.996 1386.61,704.624 1382.56,704.624C1373.43,704.624 1365.83,702.236 1359.75,697.458L1158,547.286Z'/> </g> </g> </svg>",
+    PIN_ICON: "<svg width='16px' height='16px'  viewBox='0 0 25 25' xmlns='http://www.w3.org/2000/svg' fill-rule='evenodd' clip-rule='evenodd' stroke-linejoin='round' stroke-miterlimit='1.414'><path d='M24.78 9.236L15.863.316l-1.487 4.46-4.46 4.46L8.43 7.75 3.972 9.235l4.458 4.458L.776 24.388l10.627-7.72 4.46 4.46 1.485-4.46-1.486-1.485 4.46-4.46 4.46-1.487z' fill-rule='nonzero'/></svg>",
     THEMES: {
         default: {
             type: 'Organization',

webapp/utils/utils.jsx

@@ -591,6 +591,7 @@ export function applyTheme(theme) {
         changeCss('.app__body .markdown__table tbody tr:nth-child(2n)', 'background:' + changeOpacity(theme.centerChannelColor, 0.07));
         changeCss('.app__body .channel-header__info>div.dropdown .header-dropdown__icon', 'color:' + changeOpacity(theme.centerChannelColor, 0.8));
         changeCss('.app__body .channel-header #member_popover', 'color:' + changeOpacity(theme.centerChannelColor, 0.8));
+        changeCss('.app__body .channel-header #pinned-posts-button', 'fill:' + changeOpacity(theme.centerChannelColor, 0.8));
         changeCss('.app__body .custom-textarea, .app__body .custom-textarea:focus, .app__body .file-preview, .app__body .post-image__details, .app__body .sidebar--right .sidebar-right__body, .app__body .markdown__table th, .app__body .markdown__table td, .app__body .suggestion-list__content, .app__body .modal .modal-content, .app__body .modal .settings-modal .settings-table .settings-content .divider-light, .app__body .webhooks__container, .app__body .dropdown-menu, .app__body .modal .modal-header, .app__body .popover', 'border-color:' + changeOpacity(theme.centerChannelColor, 0.2));
         changeCss('.app__body .popover.bottom>.arrow', 'border-bottom-color:' + changeOpacity(theme.centerChannelColor, 0.25));
         changeCss('.app__body .search-help-popover .search-autocomplete__divider span, .app__body .suggestion-list__divider > span', 'color:' + changeOpacity(theme.centerChannelColor, 0.7));
@@ -659,12 +660,12 @@ export function applyTheme(theme) {
     }
 
     if (theme.buttonBg) {
-        changeCss('.app__body .btn.btn-primary, .app__body .tutorial__circles .circle.active', 'background:' + theme.buttonBg);
+        changeCss('.app__body .btn.btn-primary, .app__body .tutorial__circles .circle.active, .app__body .post__pinned-badge', 'background:' + theme.buttonBg);
         changeCss('.app__body .btn.btn-primary:hover, .app__body .btn.btn-primary:active, .app__body .btn.btn-primary:focus', 'background:' + changeColor(theme.buttonBg, -0.25));
     }
 
     if (theme.buttonColor) {
-        changeCss('.app__body .btn.btn-primary', 'color:' + theme.buttonColor);
+        changeCss('.app__body .btn.btn-primary, .app__body .post__pinned-badge', 'color:' + theme.buttonColor);
     }
 
     if (theme.mentionHighlightBg) {