begin rework of image editor

dashboard-ui/components/paperdialoghelper.js

@@ -0,0 +1,48 @@
+(function (globalScope) {
+
+    function paperDialogHashHandler(dlg, hash) {
+
+        function onHashChange(e, data) {
+
+            data = data.state;
+
+            if (data.direction == 'back') {
+                if (dlg) {
+                    if (data.hash != '#' + hash) {
+                        dlg.close();
+                        dlg = null;
+                    }
+                }
+            }
+        }
+
+        function onDialogClosed() {
+
+            dlg = null;
+            $(window).off('navigate', onHashChange);
+
+            if (window.location.hash == '#' + hash) {
+                history.back();
+            }
+        }
+
+        var self = this;
+
+        $(dlg).on('iron-overlay-closed', onDialogClosed);
+        dlg.open();
+
+        window.location.hash = hash;
+
+        $(window).on('navigate', onHashChange);
+    }
+
+    function openWithHash(dlg, hash) {
+
+        new paperDialogHashHandler(dlg, hash);
+    }
+
+    globalScope.PaperDialogHelper = {
+        openWithHash: openWithHash
+    };
+
+})(this);