Allow anyone to edit a "no topic" message

This change would allow anyone in the realm to set a topic for a "no topic"
message. As soon as the message topic is set, only the sender can change it again.

(imported from commit 0a91a93b8fd14549965cedc79f45ffd869d82307)

static/js/message_edit.js

@@ -2,14 +2,17 @@ var message_edit = (function () {
 var exports = {};
 var currently_editing_messages = {};
 
+
+//returns true if the edit task should end.
 exports.save = function (row) {
     var msg_list = current_msg_list;
     var message = current_msg_list.get(rows.id(row));
-    var new_subject = row.find(".message_edit_subject").val();
+    var new_topic = row.find(".message_edit_topic").val();
     var new_content = row.find(".message_edit_content").val();
+
     var request = {message_id: message.id};
-    if (new_subject !== message.subject) {
+    if (new_topic !== message.subject && new_topic.trim() !== "") {
-        request.subject = new_subject;
+        request.subject = new_topic;
     }
     if (new_content !== message.raw_content) {
         request.content = new_content;
@@ -17,7 +20,7 @@ exports.save = function (row) {
     if (request.subject === undefined &&
         request.content === undefined) {
         // If they didn't change anything, just cancel it.
-        return message_edit.end(row);
+        return true;
     }
     $.ajax({
         type: 'POST',
@@ -26,12 +29,12 @@ exports.save = function (row) {
         dataType: 'json',
         success: function (data) {
             if (msg_list === current_msg_list) {
-                message_edit.end(row);
+                return true;
             }
         },
         error: function (xhr, error_type, xhn) {
             var message = util.xhr_error_message("Error saving edit", xhr);
-            row.find(".message_edit_error").text(message).show();
+            row.find(".edit_error").text(message).show();
         }
     });
     // The message will automatically get replaced when it arrives.
@@ -43,7 +46,13 @@ function handle_edit_keydown(e) {
     if (e.target.id === "message_edit_content" && code === 13 &&
         (e.metaKey || e.ctrlKey)) {
         row = $(".message_edit_content").filter(":focus").closest(".message_row");
-        message_edit.save(row);
+        if (message_edit.save(row) === true) {
+            message_edit.end(row);
+        }
+    } else if (e.target.id === "message_edit_topic" && code === 13) {
+        //hitting enter in topic field isn't so great.
+        e.stopPropagation();
+        e.preventDefault();
     }
 }
 
@@ -55,7 +64,7 @@ function edit_message (row, raw_content) {
     var edit_row = row.find(".message_edit");
     var form = $(templates.render('message_edit_form',
                                   {is_stream: message.is_stream,
-                                   subject: message.subject,
+                                   topic: message.subject,
                                    content: raw_content}));
 
     var edit_obj = {form: form, raw_content: raw_content};
@@ -65,7 +74,7 @@ function edit_message (row, raw_content) {
 
     currently_editing_messages[message.id] = edit_obj;
     if (message.subject === compose.empty_subject_placeholder()) {
-        edit_row.find(".message_edit_subject").focus();
+        edit_row.find(".message_edit_topic").focus();
     } else {
         edit_row.find(".message_edit_content").focus();
     }
@@ -96,6 +105,13 @@ exports.start = function (row) {
     });
 };
 
+exports.start_topic_edit = function (recipient_row) {
+    var form = $(templates.render('topic_edit_form'));
+    current_msg_list.show_edit_topic(recipient_row, form);
+    form.keydown(handle_edit_keydown);
+    form.find(".message_edit_topic").focus();
+};
+
 exports.is_editing = function (id) {
     return currently_editing_messages[id] !== undefined;
 };

static/js/message_list.js

@@ -295,6 +295,17 @@ MessageList.prototype = {
         row.find(".message_edit").hide();
     },
 
+    show_edit_topic: function MessageList_show_edit_topic(recipient_row, form) {
+        recipient_row.find(".topic_edit_form").empty().append(form);
+        recipient_row.find(".stream_topic").hide();
+        recipient_row.find(".topic_edit").show();
+    },
+
+    hide_edit_topic: function MessageList_hide_edit_topic(recipient_row) {
+        recipient_row.find(".stream_topic").show();
+        recipient_row.find(".topic_edit").hide();
+    },
+
     show_message_as_read: function (message, options) {
         var row = this.get_row(message.id);
         if (options.from === 'pointer' && feature_flags.mark_read_at_bottom) {

static/js/ui.js

@@ -1318,14 +1318,30 @@ $(function () {
         popovers.hide_all();
     });
     $('body').on('click', '.edit_subject', function (e) {
-        var row = current_msg_list.get_row(rows.id($(this).closest(".recipient_row")));
+        var recipient_row = $(this).closest(".recipient_row");
-        message_edit.start(row);
+        message_edit.start_topic_edit(recipient_row);
+        e.stopPropagation();
+        popovers.hide_all();
+    });
+    $("body").on("click", ".topic_edit_save", function (e) {
+        var recipient_row = $(this).closest(".recipient_row");
+        if (message_edit.save(recipient_row) === true) {
+            current_msg_list.hide_edit_topic(recipient_row);
+        }
+        e.stopPropagation();
+        popovers.hide_all();
+    });
+    $("body").on("click", ".topic_edit_cancel", function (e) {
+        var recipient_row = $(this).closest(".recipient_row");
+        current_msg_list.hide_edit_topic(recipient_row);
         e.stopPropagation();
         popovers.hide_all();
     });
     $("body").on("click", ".message_edit_save", function (e) {
         var row = $(this).closest(".message_row");
-        message_edit.save(row);
+        if (message_edit.save(row) === true) {
+            message_edit.end(row);
+        }
         e.stopPropagation();
         popovers.hide_all();
     });

static/js/zulip.js

@@ -554,13 +554,10 @@ function add_message_metadata(message) {
         involved_people = [{'full_name': message.sender_full_name,
                             'email': message.sender_email}];
 
-        if ((message.subject === compose.empty_subject_placeholder()) &&
+        if (message.subject === compose.empty_subject_placeholder()) {
-            message.sent_by_me) {
+            message.empty_subject = true;
-            // You can only edit messages you sent, so only show the edit hint
-            // for empty subjects on messages you sent.
-            message.your_empty_subject = true;
         } else {
-            message.your_empty_subject = false;
+            message.empty_subject = false;
         }
         break;
 
@@ -736,9 +733,9 @@ function update_messages(events) {
             msg.subject = event.subject;
             msg.subject_links = event.subject_links;
             if (msg.subject === compose.empty_subject_placeholder()) {
-                msg.your_empty_subject = true;
+                msg.empty_subject = true;
             } else {
-                msg.your_empty_subject = false;
+                msg.empty_subject = false;
             }
             // Add the recent subjects entry for the new subject; must
             // be called after we update msg.subject

static/styles/zulip.css

@@ -2214,6 +2214,10 @@ div.edit_bot {
     margin-bottom: 5px;
 }
 
+#topic_edit_form {
+    display: inline;
+}
+
 .message_edit_notice {
     font-size: 11px;
 }

static/templates/message.handlebars

@@ -55,10 +55,17 @@
       <span class="message_label_clickable narrows_by_recipient stream_label"
             title="Narrow to stream &quot;{{display_recipient}}&quot;">{{display_recipient}}</span>
       &nbsp;<i class="icon-vector-narrow icon-vector-small"></i><span class="copy-paste-text">&gt;</span>&nbsp;
+      <span class="stream_topic">
         <span class="message_label_clickable narrows_by_subject"
               title="Narrow to stream &quot;{{display_recipient}}&quot;, topic &quot;{{subject}}&quot;">{{#if ../../../../use_match_properties}}{{{match_subject}}}{{else}}{{subject}}{{/if}}</span>
-      {{#if your_empty_subject}}<i class="icon-vector-pencil edit_subject"></i>{{/if}}
+        {{#if empty_subject}}
+          <i class="icon-vector-pencil edit_subject"></i>
+        {{/if}}
         {{#each subject_links}}<a href="{{this}}" target="_blank"><i class="icon-vector-external-link-sign"></i>{{/each}}
+      </span>
+      <span class="topic_edit">
+          <span class="topic_edit_form" id="{{id}}"></span>
+      </span>
     </td>
 </tr>
 {{else}}

static/templates/message_edit_form.handlebars

@@ -3,9 +3,9 @@
 <form id="message_edit_form" class="form-horizontal">
 {{#if is_stream}}
     <div class="control-group">
-        <label class="control-label edit-control-label" for="message_edit_subject">Topic</label>
+        <label class="control-label edit-control-label" for="message_edit_topic">Topic</label>
         <div class="controls edit-controls">
-          <input type="text" value="{{subject}}" class="message_edit_subject" id="message_edit_subject">
+          <input type="text" value="{{topic}}" class="message_edit_topic" id="message_edit_topic">
         </div>
     </div>
 {{/if}}
@@ -16,9 +16,9 @@
     </div>
     <div class="control-group">
         <div class="controls edit-controls">
-            <button type="button" class="message_edit_save btn btn-primary btn-small">Save</a>
+            <button type="button" class="message_edit_save btn btn-primary btn-small">Save</button>
-            <button type="button" class="message_edit_cancel btn btn-small">Cancel</a>
+            <button type="button" class="message_edit_cancel btn btn-small">Cancel</button>
         </div>
     </div>
-    <div class="alert alert-error message_edit_error hide"></div>
+    <div class="alert alert-error edit_error hide"></div>
 </form>

static/templates/topic_edit_form.handlebars

@@ -0,0 +1,10 @@
+{{! Client-side Mustache template for rendering the topic edit form. }}
+
+<form id="topic_edit_form" class="form-horizontal">
+{{!        <div class="controls edit-controls"> }}
+          <input type="text" value="" class="message_edit_topic" id="message_edit_topic">
+            <button type="button" class="topic_edit_save btn btn-primary btn-small">Save</button>
+            <button type="button" class="topic_edit_cancel btn btn-small">Cancel</button>
+{{!        </div> }}
+    <div class="alert alert-error edit_error hide"></div>
+</form>

zerver/lib/actions.py

@@ -963,6 +963,7 @@ def do_update_message(user_profile, message_id, subject, content):
     edit_history_event = {}
 
     if message.sender != user_profile:
+        if not (message.subject == "(no topic)" and content is None):
             raise JsonableError("Message was not sent by you")
 
     # Set first_rendered_content to be the oldest version of the