1 files changed, 107 insertions, 0 deletions
diff --git a/ecomp-portal-FE/client/bower_components/jqTree/src/key_handler.coffee b/ecomp-portal-FE/client/bower_components/jqTree/src/key_handler.coffee
new file mode 100644
index 00000000..c8c17e7c
--- /dev/null
+++ b/ecomp-portal-FE/client/bower_components/jqTree/src/key_handler.coffee
@@ -0,0 +1,107 @@
+$ = jQuery
+
+
+class KeyHandler
+    LEFT = 37
+    UP = 38
+    RIGHT = 39
+    DOWN = 40
+
+    constructor: (tree_widget) ->
+        @tree_widget = tree_widget
+
+        if tree_widget.options.keyboardSupport
+            $(document).bind('keydown.jqtree', $.proxy(@handleKeyDown, this))
+
+    deinit: ->
+        $(document).unbind('keydown.jqtree')
+
+    moveDown: ->
+        node = @tree_widget.getSelectedNode()
+
+        if node
+            return @selectNode(node.getNextNode())
+        else
+            return false
+
+    moveUp: ->
+        node = @tree_widget.getSelectedNode()
+
+        if node
+            return @selectNode(node.getPreviousNode())
+        else
+            return false
+
+    moveRight: ->
+        node = @tree_widget.getSelectedNode()
+
+        if not node
+            return true
+        else if not node.isFolder()
+            return true
+        else
+            # folder node
+            if node.is_open
+                # Right moves to the first child of an open node
+                return @selectNode(node.getNextNode())
+            else
+                # Right expands a closed node
+                @tree_widget.openNode(node)
+                return false
+
+    moveLeft: ->
+        node = @tree_widget.getSelectedNode()
+
+        if not node
+            return true
+        else if node.isFolder() and node.is_open
+            # Left on an open node closes the node
+            @tree_widget.closeNode(node)
+            return false
+        else
+            # Left on a closed or end node moves focus to the node's parent
+            return @selectNode(node.getParent())
+
+    handleKeyDown: (e) ->
+        if not @tree_widget.options.keyboardSupport
+            return true
+
+        if $(document.activeElement).is('textarea,input,select')
+            return true
+
+        if not @tree_widget.getSelectedNode()
+            return true
+
+        key = e.which
+
+        switch key
+            when DOWN
+                return @moveDown()
+
+            when UP
+                return @moveUp()
+
+            when RIGHT
+                return @moveRight()
+
+            when LEFT
+                return @moveLeft()
+
+        return true
+
+    selectNode: (node) =>
+        if not node
+            return true
+        else
+            @tree_widget.selectNode(node)
+
+            if (
+                @tree_widget.scroll_handler and
+                (not @tree_widget.scroll_handler.isScrolledIntoView($(node.element).find('.jqtree-element')))
+            )
+                @tree_widget.scrollToNode(node)
+
+            return false
+
+
+module.exports = KeyHandler