preview posts in stream

Changelog.md

@@ -127,6 +127,7 @@ by them self.
 * Add multiphoto for mobile post. [#4065](https://github.com/diaspora/diaspora/issues/4065)
 * Add hotkeys to navigate in stream [#4089](https://github.com/diaspora/diaspora/pull/4089)
 * Add a brief explanatory text about external services connections to services index page [#3064](https://github.com/diaspora/diaspora/issues/3064)
+* Add a preview for posts in the stream [#4099](https://github.com/diaspora/diaspora/issues/4099)
 
 # 0.0.3.4
 

app/assets/javascripts/app/views/publisher_view.js

@@ -18,6 +18,7 @@ app.views.Publisher = Backbone.View.extend(_.extend(
     "focus textarea" : "open",
     "click #hide_publisher" : "clear",
     "submit form" : "createStatusMessage",
+    "click .post_preview_button" : "createPostPreview",
     "click .service_icon": "toggleService",
     "textchange #status_message_fake_text": "handleTextchange",
     "click .dropdown .dropdown_list li": "toggleAspect"
@@ -29,6 +30,7 @@ app.views.Publisher = Backbone.View.extend(_.extend(
     this.el_hiddenInput = this.$('#status_message_text');
     this.el_wrapper = this.$('#publisher_textarea_wrapper');
     this.el_submit = this.$('input[type=submit]');
+    this.el_preview = this.$('button.post_preview_button');
     this.el_photozone = this.$('#photodropzone');
 
     // init mentions plugin
@@ -42,10 +44,11 @@ app.views.Publisher = Backbone.View.extend(_.extend(
       this.el_hiddenInput.val( this.el_input.val() );
     }
 
-    // hide close button, in case publisher is standalone
+    // hide close and preview buttons, in case publisher is standalone
     // (e.g. bookmarklet, mentions popup)
     if( this.options.standalone ) {
       this.$('#hide_publisher').hide();
+      this.el_preview.hide();
     }
 
     // this has to be here, otherwise for some reason the callback for the
@@ -86,6 +89,83 @@ app.views.Publisher = Backbone.View.extend(_.extend(
     this.clear();
   },
   
+  createPostPreview : function(evt) {
+    if(evt){ evt.preventDefault(); }
+
+    var serializedForm = $(evt.target).closest("form").serializeObject();
+    
+    var photos = new Array();
+    $('li.publisher_photo img').each(function(){
+      var file = $(this).attr('src').substring("/uploads/images/".length);
+      photos.push(
+        {
+          "sizes":{
+            "small" : "/uploads/images/thumb_small_" + file,
+            "medium" : "/uploads/images/thumb_medium_" + file,
+            "large" : "/uploads/images/scaled_full_" + file
+          }
+        }
+      );
+    });  
+    
+    var mentioned_people = new Array();
+    var regexp = new RegExp("@{\(\.\*\) ; \(\.\*\)}", "g");
+    while(user=regexp.exec(serializedForm["status_message[text]"])){
+      // user[1]: name, user[2]: handle
+      var mentioned_user = Mentions.contacts.filter(function(item) { return item.handle == user[2];})[0];
+      if(mentioned_user){
+        mentioned_people.push({
+          "id":mentioned_user["id"],
+          "guid":mentioned_user["guid"],
+          "name":user[1],
+          "diaspora_id":user[2],
+          "avatar":mentioned_user["avatar"]
+        });
+      }      
+    }
+    
+    var date = (new Date()).toISOString();
+    var previewMessage = {
+      "id" : 0,
+      "text" : serializedForm["status_message[text]"],
+      "public" : serializedForm["aspect_ids[]"]=="public",
+      "created_at" : date,
+      "interacted_at" : date,
+      "post_type" : "StatusMessage",
+      "author" : app.currentUser ? app.currentUser.attributes : {},
+      "mentioned_people" : mentioned_people,
+      "photos" : photos,
+      "frame_name" : "status",
+      "title" : serializedForm["status_message[text]"],
+      "interactions" : {"likes":[],"reshares":[],"comments_count":0,"likes_count":0,"reshares_count":0}
+    }
+
+    if(app.stream) {
+      this.removePostPreview();
+      app.stream.items.add(previewMessage);
+      this.recentPreview=previewMessage;
+      this.modifyPostPreview($('.stream_element:first'));   
+    }
+  },
+
+  modifyPostPreview : function(post) {
+    post.addClass('post_preview');
+    $('a.delete.remove_post',post).hide();
+    $('a.like, a.focus_comment_textarea',post).removeAttr("href");    
+    $('a.like',post).addClass("like_preview");
+    $('a.like',post).removeClass("like");
+    $('a.focus_comment_textarea',post).addClass("focus_comment_textarea_preview");
+    $('a.focus_comment_textarea',post).removeClass("focus_comment_textarea");
+    $('a',$('span.details.grey',post)).removeAttr("href");
+  },
+  
+  removePostPreview : function() {
+    if(app.stream && this.recentPreview){
+        app.stream.items.remove(this.recentPreview);
+        delete this.recentPreview;
+    }
+  },
+
   clear : function() {
     // clear text(s)
     this.el_input.val('');
@@ -105,6 +185,9 @@ app.views.Publisher = Backbone.View.extend(_.extend(
     // close publishing area (CSS)
     this.close();
     
+    // remove preview
+    this.removePostPreview();
+
     // disable submitting
     this.checkSubmitAvailability();
 
@@ -137,8 +220,10 @@ app.views.Publisher = Backbone.View.extend(_.extend(
   checkSubmitAvailability: function() {
     if( this._submittable() ) {
       this.el_submit.removeAttr('disabled');
+      this.el_preview.removeAttr('disabled');
     } else {
       this.el_submit.attr('disabled','disabled');
+      this.el_preview.attr('disabled','disabled');
     }
   },
 

app/assets/stylesheets/application.css.sass

@@ -3112,3 +3112,11 @@ body
   :font-size small
   :text-align right
   :margin 5px 2px
+  
+.post_preview
+  :padding
+    :top 5px
+  :border
+    :bottom 3px solid #3f8fba !important
+  :background
+    :color #e8f7ff

app/views/photos/_new_photo.haml

@@ -30,6 +30,7 @@
        onSubmit: function(id, fileName){
         $('#file-upload').addClass("loading");
         $('#publisher').find("input[type='submit']").attr('disabled','disabled');
+        $('#publisher').find("button.post_preview_button").attr('disabled','disabled');
 
         app.publisher.el_wrapper.addClass("with_attachments");
         $('#photodropzone').append(
@@ -61,6 +62,7 @@
             textarea = publisher.find('textarea');
 
         publisher.find("input[type='submit']").removeAttr('disabled');
+        publisher.find("button.post_preview_button").removeAttr('disabled');
 
         $('.x').bind('click', function(){
           var photo = $(this).closest('.publisher_photo');

app/views/shared/_publisher.html.haml

@@ -73,6 +73,9 @@
                 - for aspect in all_aspects
                   = aspect_dropdown_list_item(aspect, !all_aspects_selected?(selected_aspects) && selected_aspects.include?(aspect) )
 
+          %button{ :disabled => ("disabled" if publisher_hidden_text.blank?), :class => 'button post_preview_button'}
+            = t('.preview') 
+
           = status.submit t('.share'), :disabled => publisher_hidden_text.blank?, :class => 'button creation', :tabindex => 2
 
           .facebox_content

config/locales/diaspora/en.yml

@@ -789,6 +789,7 @@ en:
     publisher:
       posting: "Posting..."
       share: "Share"
+      preview: "Preview"
       post_a_message_to: "Post a message to %{aspect}"
       make_public: "make public"
       all: "all"

features/post_preview.feature

@@ -0,0 +1,52 @@
+@javascript
+Feature: preview posts in the stream
+    In order to test markdown without posting
+    As a user
+    I want to see a preview of my posts in the stream
+
+    Background:
+      Given following users exist:
+        | username     | email             |
+        | Bob Jones    | bob@bob.bob       |
+        | Alice Smith  | alice@alice.alice |
+      And a user with email "bob@bob.bob" is connected with "alice@alice.alice"
+      When I sign in as "bob@bob.bob"
+      And I am on the home page
+      Then I should not see any posts in my stream
+
+    Scenario: preview and post a text-only message
+      Given I expand the publisher
+      When I fill in the following:
+          | status_message_fake_text    | I am eating yogurt    |
+      And I press "Preview"
+      Then "I am eating yogurt" should be post 1
+      And the first post should be a preview
+      
+      When I fill in the following:
+          | status_message_fake_text    | This preview rocks    |
+      And I press "Preview"
+      Then "This preview rocks" should be post 1
+      And I should not see "I am eating a yogurt"
+      
+      When I fill in the following:
+          | status_message_fake_text    | I like rocks    |
+      And I press "Share"
+      And I wait for the ajax to finish
+      Then "I like rocks" should be post 1
+      And I should not see "This preview rocks"
+
+    Scenario: preview a photo with text
+      Given I expand the publisher
+      When I attach the file "spec/fixtures/button.png" to hidden element "file" within "#file-upload"
+      When I fill in the following:
+          | status_message_fake_text    | Look at this dog    |
+      And I press "Preview"
+      Then I should see a "img" within ".stream_element div.photo_attachments"
+      And I should see "Look at this dog" within ".stream_element"
+      
+    Scenario: preview a post with mentions
+      Given I expand the publisher
+      And I mention Alice in the publisher
+      And I press "Preview"
+      And I follow "Alice Smith"
+      Then I should see "Alice Smith"

features/step_definitions/mention_steps.rb

@@ -4,3 +4,8 @@ And /^Alice has a post mentioning Bob$/ do
   aspect = alice.aspects.where(:name => "Besties").first
   alice.post(:status_message, :text => "@{Bob Jones; #{bob.person.diaspora_handle}}", :to => aspect)
 end
+
+And /^I mention Alice in the publisher$/ do
+  alice = User.find_by_email 'alice@alice.alice'
+  fill_in 'status_message_fake_text', :with => "@{Alice Smith ; #{alice.person.diaspora_handle}}"
+end

features/step_definitions/post_preview_steps.rb

@@ -0,0 +1,3 @@
+Then /^the first post should be a preview$/ do
+  find(".post_preview .post-content").text.should == first_post_text
+end

features/support/publishing_cuke_helpers.rb

@@ -1,7 +1,7 @@
 module PublishingCukeHelpers
   def make_post(text)
     fill_in 'status_message_fake_text', :with => text
-    click_button :submit
+    find(".creation").click
     wait_for_ajax_to_finish
   end
 

spec/javascripts/app/views/publisher_view_spec.js

@@ -18,6 +18,10 @@ describe("app.views.Publisher", function() {
     it("hides the close button in standalone mode", function() {
       expect(this.view.$('#hide_publisher').is(':visible')).toBeFalsy();
     });
+    
+    it("hides the post preview button in standalone mode", function() {
+      expect(this.view.$('.post_preview_button').is(':visible')).toBeFalsy();
+    });
   });
 
   context("plain publisher", function() {
@@ -62,6 +66,13 @@ describe("app.views.Publisher", function() {
         expect(this.view.close).toHaveBeenCalled();
       })
       
+      it("calls removePostPreview", function(){
+        spyOn(this.view, "removePostPreview");
+
+        this.view.clear($.Event());
+        expect(this.view.removePostPreview).toHaveBeenCalled();
+      })
+
       it("clears all textareas", function(){
         _.each(this.view.$("textarea"), function(element){
           $(element).val('this is some stuff');