Add designer-selection element

elements/designer-selection/ResizeDirection.js

Index: elements/designer-selection/ResizeDirection.js
diff --git a/elements/designer-selection/ResizeDirection.js b/elements/designer-selection/ResizeDirection.js
new file mode 100644
index 0000000000000000000000000000000000000000..062fb87272463051f95a574500ffd788b7ce1ccb
--- /dev/null
+++ b/elements/designer-selection/ResizeDirection.js
@@ -0,0 +1,57 @@
+/**
+ * @license
+ * Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+
+function ResizeDirection(name, x, y) {
+  this.name = name;
+  this.x = x;
+  this.y = y;
+}
+
+ResizeDirection.prototype.toString = function() {
+  return 'ResizeDirection(' + this.name + ', ' + this.x + ', ' + 
+      this.y + ')';
+};
+
+ResizeDirection.prototype.locate = function(rect) {
+  return {
+    x: rect.left + rect.width * this.x,
+    y: rect.top + rect.height * this.y
+  };
+};
+
+ResizeDirection.prototype.resizesLeft = function() {
+  return this.x == 0.0;
+},
+
+ResizeDirection.prototype.resizesRight = function() {
+  return this.x == 1.0;
+},
+
+ResizeDirection.prototype.resizesTop = function() {
+  return this.y == 0.0;
+},
+
+ResizeDirection.prototype.resizesBottom = function() {
+  return this.y == 1.0;
+},
+
+(function () {
+  var top = ResizeDirection.top = new ResizeDirection('top', 0.5, 0.0);
+  var left = ResizeDirection.left = new ResizeDirection('left', 0.0, 0.5);
+  var bottom = ResizeDirection.bottom = new ResizeDirection('bottom', 0.5, 1.0);
+  var right = ResizeDirection.right = new ResizeDirection('right', 1.0, 0.5);
+  var top_left = ResizeDirection.top_left = new ResizeDirection('top_left', 0.0, 0.0);
+  var top_right = ResizeDirection.top_right = new ResizeDirection('top_right', 1.0, 0.0);
+  var bottom_left = ResizeDirection.bottom_left = new ResizeDirection('bottom_left', 0.0, 1.0);
+  var bottom_right = ResizeDirection.bottom_right = new ResizeDirection('bottom_right', 1.0, 1.0);
+
+  ResizeDirection.all_directions = [top, left, bottom, right, top_left, top_right, bottom_left, bottom_right];      
+  ResizeDirection.width_height = [bottom, right, bottom_right];      
+})();