Merge pull request #500 from taigaio/enhancement/2807/multiple-backlog-check-with-shift

if the user check one item in the backlog the items between this item…

app/coffee/modules/backlog/main.coffee

@@ -603,9 +603,11 @@ BacklogDirective = ($repo, $rootscope, $translate) ->
                 $ctrl.loadProjectStats()
 
 
-        # Enable move to current sprint only when there are selected us's
+        shiftPressed = false
-        $el.on "change", ".backlog-table-body .user-stories input:checkbox", (event) ->
+        lastChecked = null
-            target = angular.element(event.currentTarget)
+
+        checkSelected = (target) ->
+            lastChecked = target.closest(".us-item-row")
             moveToCurrentSprintDom = $el.find("#move-to-current-sprint")
             selectedUsDom = $el.find(".backlog-table-body .user-stories input:checkbox:checked")
 
@@ -616,6 +618,33 @@ BacklogDirective = ($repo, $rootscope, $translate) ->
 
             target.closest('.us-item-row').toggleClass('ui-multisortable-multiple')
 
+        $(window).on "keydown.shift-pressed keyup.shift-pressed", (event) ->
+            shiftPressed = !!event.shiftKey
+
+            return true
+
+        # Enable move to current sprint only when there are selected us's
+        $el.on "change", ".backlog-table-body .user-stories input:checkbox", (event) ->
+            # check elements between the last two if shift is pressed
+            if lastChecked && shiftPressed
+                elements = []
+                current = $(event.currentTarget).closest(".us-item-row")
+                nextAll = lastChecked.nextAll()
+                prevAll = lastChecked.prevAll()
+
+                if _.some(nextAll, (next) -> next == current[0])
+                    elements = lastChecked.nextUntil(current)
+                else if _.some(prevAll, (prev) -> prev == current[0])
+                    elements = lastChecked.prevUntil(current)
+
+                _.map elements, (elm) ->
+                    input = $(elm).find("input:checkbox")
+                    input.prop('checked', true);
+                    checkSelected(input)
+
+            target = angular.element(event.currentTarget)
+            checkSelected(target)
+
         $el.on "click", "#move-to-current-sprint", (event) =>
             # Calculating the us's to be modified
             ussDom = $el.find(".backlog-table-body .user-stories input:checkbox:checked")
@@ -701,6 +730,7 @@ BacklogDirective = ($repo, $rootscope, $translate) ->
 
         $scope.$on "$destroy", ->
             $el.off()
+            $(window).off(".shift-pressed")
 
     return {link: link}