From b9acb41321c9666154a9eddfafaca59141497523 Mon Sep 17 00:00:00 2001
From: Tom MacWright <tom@macwright.org>
Date: Fri, 2 Nov 2012 16:32:36 -0400
Subject: [PATCH] Escape actions with the escape key

---
 index.html               |  2 --
 js/iD/actions/actions.js | 46 +++++++++++++++++++++++++++++++++++++---
 2 files changed, 43 insertions(+), 5 deletions(-)

diff --git a/index.html b/index.html
index f285645b7..52efa243a 100755
--- a/index.html
+++ b/index.html
@@ -83,8 +83,6 @@
                 });
             }
 
-            for (var a in iD.actions) iD.actions[a].bind();
-
             d3.select('#geocode-form').on('submit', function() {
                 d3.event.preventDefault();
                 var val = d3.select('#geocode-location').node().value;
diff --git a/js/iD/actions/actions.js b/js/iD/actions/actions.js
index 876f280cd..4bc28f191 100644
--- a/js/iD/actions/actions.js
+++ b/js/iD/actions/actions.js
@@ -1,7 +1,8 @@
 iD.actions = {};
 
 iD.actions.AddPlace = {
-    bind: function() {
+    bind: function(controller) {
+        this.controller = controller;
         d3.selectAll('button#place').on('click', function() {
             iD.actions.AddPlace.enter();
         });
@@ -19,7 +20,8 @@ iD.actions.AddPlace = {
 };
 
 iD.actions.AddRoad = {
-    bind: function() {
+    bind: function(controller) {
+        this.controller = controller;
         d3.selectAll('button#road').on('click', function() {
             iD.actions.AddRoad.enter();
         });
@@ -37,7 +39,8 @@ iD.actions.AddRoad = {
 };
 
 iD.actions.AddArea = {
-    bind: function() {
+    bind: function(controller) {
+        this.controller = controller;
         d3.selectAll('button#area').on('click', function() {
             iD.actions.AddArea.enter();
         });
@@ -53,3 +56,40 @@ iD.actions.AddArea = {
         d3.selectAll('button#area').classed('active', false);
     }
 };
+
+iD.actions.Move = {
+    bind: function(controller) {
+        this.controller = controller;
+    },
+    enter: function() {
+        d3.selectAll('button').classed('active', false);
+    },
+    exit: function() { }
+};
+
+iD.controller = (function() {
+    var controller = {},
+        action;
+
+    for (var a in iD.actions) iD.actions[a].bind(controller);
+
+    controller.go = function(x) {
+        if (action) {
+            action.exit();
+        }
+        x.enter();
+        action = x;
+    };
+
+    controller.go(iD.actions.Move);
+
+    // Pressing 'escape' should exit any action.
+    d3.select(document).on('keydown', function() {
+        if (d3.event.keyCode === 27) {
+            iD.controller.go(iD.actions.Move);
+        }
+    });
+
+    return controller;
+})();
+