improve & refactor quote reply

app/assets/javascripts/discourse/controllers/quote_button_controller.js

@@ -29,17 +29,15 @@ Discourse.QuoteButtonController = Discourse.Controller.extend({
 
     @method selectText
   **/
-  selectText: function(e) {
+  selectText: function(postId) {
     // anonymous users cannot "quote-reply"
     if (!Discourse.get('currentUser')) return;
     // don't display the "quote-reply" button if we can't create a post
     if (!this.get('controllers.topic.content.can_create_post')) return;
 
     var selection = window.getSelection();
-
     // no selections
     if (selection.rangeCount === 0) return;
-
     // retrieve the selected range
     var range = selection.getRangeAt(0),
         cloned = range.cloneRange(),
@@ -51,9 +49,17 @@ Discourse.QuoteButtonController = Discourse.Controller.extend({
 
     var selectedText = Discourse.Utilities.selectedText();
     if (this.get('buffer') === selectedText) return;
-    if (this.get('lastSelected') === selectedText) return;
 
-    this.set('post', e.context);
+    // we need to retrieve the post data from the posts collection in the topic controller
+    var posts = this.get('controllers.topic.posts'),
+        length = posts.length,
+        post;
+
+    for (var p = 0; p < length; p++) {
+      if (posts[p].id === postId) { post = posts[p]; break; }
+    }
+
+    this.set('post', post);
     this.set('buffer', selectedText);
 
     // collapse the range at the beginning of the selection
@@ -117,6 +123,18 @@ Discourse.QuoteButtonController = Discourse.Controller.extend({
     }
     this.set('buffer', '');
     return false;
+  },
+
+  /**
+    Deselect the currently selected text
+
+    @method deselectText
+  **/
+  deselectText: function() {
+    // clear selected text
+    window.getSelection().removeAllRanges();
+    // clean up the buffer
+    this.set('buffer', '');
   }
 
 });

app/assets/javascripts/discourse/views/post_view.js

@@ -43,34 +43,19 @@ Discourse.PostView = Discourse.View.extend({
     this.set('context', this.get('content'));
   },
 
-  mouseDown: function(e) {
-    this.set('isMouseDown', true);
-  },
-
   mouseUp: function(e) {
     if (this.get('controller.multiSelect') && (e.metaKey || e.ctrlKey)) {
       this.toggleProperty('post.selected');
     }
-
-    if (!Discourse.get('currentUser.enable_quoting')) return;
-    if ($(e.target).closest('.topic-body').length === 0) return;
-
-    var qbc = this.get('controller.controllers.quoteButton');
-    if (qbc) {
-      e.context = this.get('post');
-      qbc.selectText(e);
-    }
-
-    this.set('isMouseDown', false);
   },
 
-  selectText: (function() {
+  selectText: function() {
     return this.get('post.selected') ? Em.String.i18n('topic.multi_select.selected', { count: this.get('controller.selectedCount') }) : Em.String.i18n('topic.multi_select.select');
-  }).property('post.selected', 'controller.selectedCount'),
+  }.property('post.selected', 'controller.selectedCount'),
 
-  repliesHidden: (function() {
+  repliesHidden: function() {
     return !this.get('repliesShown');
-  }).property('repliesShown'),
+  }.property('repliesShown'),
 
   // Click on the replies button
   showReplies: function() {
@@ -262,30 +247,5 @@ Discourse.PostView = Discourse.View.extend({
     if (controller && controller.postRendered) {
       controller.postRendered(post);
     }
-
-    // make the selection work under iOS
-    // "selectionchange" event is only supported in IE, Safari & Chrome
-    var postView = this;
-    $(document).on('selectionchange', function(e) {
-      // quoting as been disabled by the user
-      if (!Discourse.get('currentUser.enable_quoting')) return;
-      // there is no need to handle this event when the mouse is down
-      if (postView.get('isMouseDown')) return;
-      // find out whether we currently are selecting inside a post
-      var closestPosts = $(window.getSelection().anchorNode).closest('.topic-post');
-      if (closestPosts.length === 0) return;
-      // this event is bound for every posts in the topic, but is triggered on "document"
-      // we should therefore filter the event to only the right post
-      if (closestPosts[0].id !== postView.elementId) return;
-      var qbc = postView.get('controller.controllers.quoteButton');
-      if (qbc) {
-        e.context = postView.get('post');
-        qbc.selectText(e);
-      }
-    });
-  },
-
-  willDestroyElement: function() {
-    $(document).off('selectionchange');
   }
 });

app/assets/javascripts/discourse/views/quote_button_view.js

@@ -8,32 +8,92 @@
 **/
 Discourse.QuoteButtonView = Discourse.View.extend({
   classNames: ['quote-button'],
-  classNameBindings: ['hasBuffer'],
+  classNameBindings: ['visible'],
+  isMouseDown: false,
 
+  /**
+    Determines whether the pop-up quote button should be visible.
+    The button is visible whenever there is something in the buffer
+    (ie. something has been selected)
+
+    @property visible
+  **/
+  visible: function() {
+    return this.present('controller.buffer');
+  }.property('controller.buffer'),
+
+  /**
+    Renders the pop-up quote button.
+
+    @method render
+  **/
   render: function(buffer) {
     buffer.push('<i class="icon-quote-right"></i>&nbsp;&nbsp;');
     buffer.push(Em.String.i18n("post.quote_reply"));
   },
 
-  hasBuffer: function() {
-    return this.present('controller.buffer') ? 'visible' : null;
-  }.property('controller.buffer'),
-
-  willDestroyElement: function() {
-    $(document).off("mousedown.quote-button");
-  },
+  /**
+    Binds to the following global events:
+      - `mousedown` to clear the quote button if they click elsewhere.
+      - `mouseup` to trigger the display of the quote button.
+      - `selectionchange` to make the selection work under iOS
 
+    @method didInsertElement
+  **/
   didInsertElement: function() {
-    // Clear quote button if they click elsewhere
-    var quoteButtonView = this;
-    $(document).on("mousedown.quote-button", function(e) {
-      if ($(e.target).hasClass('quote-button')) return;
-      if ($(e.target).hasClass('create')) return;
-      quoteButtonView.set('controller.lastSelected', quoteButtonView.get('controller.buffer'));
-      quoteButtonView.set('controller.buffer', '');
+    var controller = this.get('controller'),
+        view = this;
+
+    $(document)
+    .on("mousedown.quote-button", function(e) {
+      view.set('isMouseDown', true);
+      if ($(e.target).hasClass('quote-button') || $(e.target).hasClass('create')) return;
+      controller.deselectText();
+    })
+    .on('mouseup.quote-button', function(e) {
+      view.selectText(e.target, controller);
+      view.set('isMouseDown', false);
+    })
+    .on('selectionchange', function() {
+      // there is no need to handle this event when the mouse is down
+      if (view.get('isMouseDown')) return;
+      // `selection.anchorNode` is used as a target
+      view.selectText(window.getSelection().anchorNode, controller);
     });
   },
 
+  /**
+    Selects the text
+
+    @method selectText
+  **/
+  selectText: function(target, controller) {
+    var $target = $(target);
+    // quoting as been disabled by the user
+    if (!Discourse.get('currentUser.enable_quoting')) return;
+    // retrieve the post id from the DOM
+    var postId = $target.closest('.boxed').data('post-id');
+    // select the text
+    if (postId) controller.selectText(postId);
+  },
+
+  /**
+    Unbinds from global `mouseup, mousedown, selectionchange` events
+
+    @method willDestroyElement
+  **/
+  willDestroyElement: function() {
+    $(document)
+    .off("mousedown.quote-button")
+    .off("mouseup.quote-button")
+    .off("selectionchange");
+  },
+
+  /**
+    Quote the selected text when clicking on the quote button.
+
+    @method click
+  **/
   click: function(e) {
     e.stopPropagation();
     return this.get('controller').quoteText(e);