New content function within containeritem for easy text manipulation

Change-Id: If4ca3bb317af35449a25b9924501c64f19a7c95e
diff --git a/dev/demo/containermenudemo.js b/dev/demo/containermenudemo.js
index f1f66c0..2983230 100644
--- a/dev/demo/containermenudemo.js
+++ b/dev/demo/containermenudemo.js
@@ -24,9 +24,8 @@
     },
 
     // enter or click
-    onclick : function (event) {
+    onclick : function () {
       console.log(this._name);
-      event.halt();
     },
 
     // right arrow
@@ -42,7 +41,7 @@
       this._name = params[0];
       this._content = document.createTextNode(this._name);
       this._lcField = ' ' + this.content().textContent.toLowerCase();
-      this._i=0;
+      this.newLimit=0;
       return this;
     }
   };
@@ -69,17 +68,10 @@
     further : function () {
       this.value = this.value + this.value;
     },
-    isSelectable : function () {
-      return (this.value !== "");
-    },
-    chop : function () {
-      console.log("chop");
-      console.log(this.content(this.value));
-    },
     onclick : function () {
       console.log('ContainerItem ' + this.value);
-      console.log(this._i);
-      this._menu.limit(this._i);
+      console.log(this.newLimit);
+      this._menu.limit(this.newLimit);
       this._menu.show();
     }
   };
@@ -89,13 +81,14 @@
   ExampleItemList.push(OwnContainerItemClass.create());
   ExampleItemList.push(OwnContainerItemClass.create());
   ExampleItemList[0].value = "Example Item 1";
-  ExampleItemList[0]._i = 3;
-  ExampleItemList[1]._i = 4;
+  ExampleItemList[0].newLimit = 3;
+  ExampleItemList[1].newLimit = 4;
   ExampleItemList[2].value = "Remove the Prefix Test";
-  ExampleItemList[2]._i=5;
+  ExampleItemList[2].newLimit=5;
   ExampleItemList[2].onclick = function (e) {
-    this._menu.container().removeItemByIndex(3);
-    //Should fail, that's ok. You can also try index 0 for testing functionality.
+    this._menu.container().addItem({defaultTextValue: "new", newLimit:4 })
+    this.initContent("I created a new item");
+    this._menu.container().removeItemByIndex(0);
   };
 
   //Own container class.
@@ -220,7 +213,7 @@
   document.getElementById('menu').appendChild(menu.element());
   //document.getElementById('largemenu').appendChild(largeMenu.element());
 
-  menu.container().addItem({ value : "Dynamically added", defaultTextValue : "dynamic", _i : 5})
+  menu.container().addItem({ value : "Dynamically added", defaultTextValue : "dynamic", newLimit : 5})
 
   menu.limit(3).show(3);
   menu.focus();
diff --git a/dev/js/spec/containerMenuSpec.js b/dev/js/spec/containerMenuSpec.js
index a6d85b7..5a628e4 100644
--- a/dev/js/spec/containerMenuSpec.js
+++ b/dev/js/spec/containerMenuSpec.js
@@ -210,8 +210,8 @@
         expect(liElements[2].classList.contains("no-more")).toBe(false);
 
         var items = menu.container().items;
-        expect(items[0].content().nodeValue).toEqual("CIText1 ");
-        expect(items[1].content().nodeValue).toEqual("CIText2 ");
+        expect(items[0].initContent().nodeValue).toEqual("CIText1 ");
+        expect(items[1].initContent().nodeValue).toEqual("CIText2 ");
         expect(items[2].element().innerHTML).toEqual(""); //prefix!
         expect(items[3]).toBe(undefined);
       });
@@ -2129,21 +2129,21 @@
         
         var menu = OwnContainerMenu.create(list,ExampleItemList2);
         var container = menu.container();
-        expect(container.item(0).content().nodeValue).toEqual("CIText1 ");
-        expect(container.item(1).content().nodeValue).toEqual("");
+        expect(container.item(0).initContent().nodeValue).toEqual("CIText1 ");
+        expect(container.item(1).initContent().nodeValue).toEqual("");
         expect(container.item(2)).toBeDefined();
-        expect(container.item(2).content()).toEqual(undefined);
+        expect(container.item(2).initContent()).toEqual(undefined);
         expect(container._cItemPrefix.element().innerHTML).toEqual("");
-        expect(container.item(0).content("New1").nodeValue).toEqual("New1");
-        expect(container.item(1).content("New2").nodeValue).toEqual("New2");
+        expect(container.item(0).initContent("New1").nodeValue).toEqual("New1");
+        expect(container.item(1).initContent("New2").nodeValue).toEqual("New2");
         expect(container._cItemPrefix.element().innerHTML).toEqual("");
         expect(container.item(2)).toBeDefined();
-        expect(container.item(2).content()).toEqual(undefined);
-        expect(container.item(0).content().nodeValue).toEqual("CIText1 ");
-        expect(container.item(1).content().nodeValue).toEqual("");
+        expect(container.item(2).initContent()).toEqual(undefined);
+        expect(container.item(0).initContent().nodeValue).toEqual("CIText1 ");
+        expect(container.item(1).initContent().nodeValue).toEqual("");
         expect(container._cItemPrefix.element().innerHTML).toEqual("");
         expect(container.item(2)).toBeDefined();
-        expect(container.item(2).content()).toEqual(undefined);
+        expect(container.item(2).initContent()).toEqual(undefined);
         
         
       });
@@ -2164,18 +2164,45 @@
         
         var menu = OwnContainerMenu.create(list,ExampleItemList2);
         var container = menu.container();
-        expect(container.item(0).content().nodeValue).toEqual("CIText1 ");
-        expect(container.item(1).content().nodeValue).toEqual("");
-        expect(container.item(2).content()).toEqual(undefined);
+
+        var testElement = container.element().children[0]; // Use this to test wether the HTML elements are in the correct order.
+
+        expect(container.item(0).initContent().nodeValue).toEqual("CIText1 ");
+        expect(testElement).toEqual(container.item(0).element())
+
+        testElement = testElement.nextElementSibling;
+        expect(container.item(1).initContent().nodeValue).toEqual("");
+        expect(testElement).toEqual(container.item(1).element())
+
+        testElement = testElement.nextElementSibling;
+        expect(container.item(2).initContent()).toEqual(undefined);
         expect(container.item(2)).toBeDefined();
+        expect(testElement).toEqual(container.item(2).element()) // = prefix
         expect(container._cItemPrefix.element().innerHTML).toEqual("");
+        expect(container.element().lastChild).toEqual(container._cItemPrefix.element());
+
         container.addItem({defaultTextValue : "CIText2 "});
-        expect(container.item(0).content().nodeValue).toEqual("CIText1 ");
-        expect(container.item(1).content().nodeValue).toEqual("");
-        expect(container.item(2).content().nodeValue).toEqual("CIText2 ");
+        
+        var testElement = container.element().children[0]; // Use this to test wether the HTML elements are in the correct order.
+
+        expect(container.item(0).initContent().nodeValue).toEqual("CIText1 ");
+        expect(testElement).toEqual(container.item(0).element())
+
+        testElement = testElement.nextElementSibling;
+        expect(container.item(1).initContent().nodeValue).toEqual("");
+        expect(testElement).toEqual(container.item(1).element())
+
+        testElement = testElement.nextElementSibling;
+        expect(container.item(2).initContent().nodeValue).toEqual("CIText2 ");
+        expect(testElement).toEqual(container.item(2).element())
+
+        testElement = testElement.nextElementSibling;
         expect(container.item(3)).toBeDefined();
-        expect(container.item(3).content()).toEqual(undefined);
+        expect(container.item(3).initContent()).toEqual(undefined);
+        expect(testElement).toEqual(container.item(3).element())
         expect(container._cItemPrefix.element().innerHTML).toEqual("");
+        expect(container.element().lastChild).toEqual(container._cItemPrefix.element()); //Prefix must always be at the very back.
+        
         container.add("a");
 
         menu.next();
@@ -2207,98 +2234,6 @@
         
       });
 
-      it("should support dynamic changing of text content", function () {
-        var list = [
-          ["Constituency"],
-          ["Lemma"],
-          ["Morphology"],
-          ["Part-of-Speech"],
-          ["Syntax"]
-        ];
-        
-        var ExampleItemList2 = new Array;
-        ExampleItemList2.push({defaultTextValue : "CIText1 "});
-        ExampleItemList2.push({});
-        
-        var menu = OwnContainerMenu.create(list,ExampleItemList2);
-        var container = menu.container();
-        expect(container.item(0).content().nodeValue).toEqual("CIText1 ");
-        expect(container.item(1).content().nodeValue).toEqual("");
-        expect(container.item(2)).toBeDefined();
-        expect(container.item(2).content()).toEqual(undefined);
-        expect(container._cItemPrefix.element().innerHTML).toEqual("");
-        expect(container.item(0).content("New1").nodeValue).toEqual("New1");
-        expect(container.item(1).content("New2").nodeValue).toEqual("New2");
-        expect(container._cItemPrefix.element().innerHTML).toEqual("");
-        expect(container.item(2)).toBeDefined();
-        expect(container.item(2).content()).toEqual(undefined);
-        expect(container.item(0).content().nodeValue).toEqual("CIText1 ");
-        expect(container.item(1).content().nodeValue).toEqual("");
-        expect(container._cItemPrefix.element().innerHTML).toEqual("");
-        expect(container.item(2)).toBeDefined();
-        expect(container.item(2).content()).toEqual(undefined);
-        
-        
-      });
-
-      it("should support dynamic adding of items", function () {
-
-        var list = [
-          ["Constituency"],
-          ["Lemma"],
-          ["Morphology"],
-          ["Part-of-Speech"],
-          ["Syntax"]
-        ];
-        
-        var ExampleItemList2 = new Array;
-        ExampleItemList2.push({defaultTextValue : "CIText1 "});
-        ExampleItemList2.push({});
-        
-        var menu = OwnContainerMenu.create(list,ExampleItemList2);
-        var container = menu.container();
-        expect(container.item(0).content().nodeValue).toEqual("CIText1 ");
-        expect(container.item(1).content().nodeValue).toEqual("");
-        expect(container.item(2).content()).toEqual(undefined);
-        expect(container.item(2)).toBeDefined();
-        expect(container._cItemPrefix.element().innerHTML).toEqual("");
-        container.addItem({defaultTextValue : "CIText2 "});
-        expect(container.item(0).content().nodeValue).toEqual("CIText1 ");
-        expect(container.item(1).content().nodeValue).toEqual("");
-        expect(container.item(2).content().nodeValue).toEqual("CIText2 ");
-        expect(container.item(3)).toBeDefined();
-        expect(container.item(3).content()).toEqual(undefined);
-        expect(container._cItemPrefix.element().innerHTML).toEqual("");
-        container.add("a");
-
-        menu.next();
-        menu.next();
-        menu.next();
-        menu.next();
-        menu.next();
-        expect(container.item(0).active()).toBeTruthy();
-        menu.next();
-        expect(container.item(1).active()).toBeTruthy();
-        menu.next();
-        expect(container.item(2).active()).toBeTruthy();
-        menu.next();
-        expect(container.item(3).active()).toBeTruthy();
-        menu.next();
-        expect(container.item(3).active()).toBeFalsy();
-        menu.prev();
-        expect(container.item(3).active()).toBeTruthy();
-        menu.prev();
-        expect(container.item(2).active()).toBeTruthy();
-        menu.prev();
-        expect(container.item(1).active()).toBeTruthy();
-        menu.prev();
-        expect(container.item(0).active()).toBeTruthy();
-        menu.prev();
-        expect(container.item(0).active()).toBeFalsy();
-
-        
-        
-      });
 
     });
   });
diff --git a/dev/js/src/container/container.js b/dev/js/src/container/container.js
index 3f6a54d..6c4b759 100644
--- a/dev/js/src/container/container.js
+++ b/dev/js/src/container/container.js
@@ -31,10 +31,14 @@
       } else {
         this._containerItemClass = defaultContainerItemClass;
       };
-      this._el = document.createElement("ul");
-      this._el.style.outline = 0;
-      this._el.setAttribute('tabindex', 0);
-      this._el.classList.add('menu', 'container'); //container class allows for more stylesheet changes
+      var el = document.createElement("ul");
+      el.style.outline = 0;
+      el.setAttribute('tabindex', 0);
+      el.classList.add('menu', 'container'); //container class allows for more stylesheet changes
+
+      this._el = el;
+      this._cItemPrefix = undefined; //required for re-setting the menus pointer correctly
+      // after having upgraded a new item scss style to the prefix object.
 
       this.items = new Array();
       //items are stored in the order they are added in. This includes the prefix.
@@ -57,34 +61,41 @@
       //t._el.classList.add('visible'); //Done by containermenu
     },
 
+
     /**
-     * Adds a static item to this container by creating a standard containerItem as specified when this container was created,
-     * then upgrading it to the item passed to this function, and calling element() and content(). For a full list of supported functions see
-     * containeritem.js .
-     * Example:
-     * 
-     * menu.container().addItem(
-     *  {defaultTextValue : "dynamic", onClick : function (e) { ... }
-     * )
-     * 
-     *  For a full demo see containermenudemo.js.
-     * 
-     * @param {Object} item An object with any number of functions like in containeritem.js or an attribute defaultTextValue,
-     * as well as any number of own properties.
-     * @returns the new use-ready containerItem
-     */
+    * Adds a static item to this container by creating a standard containerItem as specified when this container was created,
+    * then upgrading it to the item passed to this function, and calling element() and content(). For a full list of supported functions see
+    * containeritem.js .
+    * Example:
+    * 
+    * menu.container().addItem(
+    *  {defaultTextValue : "dynamic", onClick : function (e) { ... }
+    * )
+    * 
+    *  For a full demo see containermenudemo.js.
+    * 
+    * @param {Object} item An object with any number of functions like in containeritem.js or an attribute defaultTextValue,
+    * as well as any number of own properties.
+    * @returns the new use-ready containerItem
+    */
     addItem : function (item) {
       //Call Order: First _containerItemClass is created and then upgraded To whatever object is passed to this function
       //Then container calls first element() and then container()
       var cItem = this._containerItemClass.create().upgradeTo(item);
       cItem._menu = this._menu; //if not set then undefined, but thats OK
       this.items.push(cItem);
+      this.element().appendChild(cItem.element());
+      cItem.initContent(); // create its textNode
       if (this._cItemPrefix !== undefined){ //this must be dynamic adding of CIs, move prefix to the back
+        //adjust the prefix' position within .items to be in the back
         this.items.splice(this.items.indexOf(this._cItemPrefix) , 1); //remove cItemPrefix
         this.items.push(this._cItemPrefix); //and move it to the end;
+        //adjust the prefix' HTML elements position
+        this.element().removeChild(this._cItemPrefix.element());
+        this.element().appendChild(this._cItemPrefix.element());
+        //adjust the prefix' stored position
+        this._prefixPosition = this.items.length;
       };
-      this._el.appendChild(cItem.element());
-      cItem.content(); // create its textNode
       return cItem;
     },
 
@@ -95,21 +106,21 @@
       };
       for (let item of this.items) {
         item._menu=menu;
-      }
+      };
     },
 
     addPrefix : function (prefix) {
       prefix.isSelectable =  function () {
         return this.isSet(); //TODO check!
-      }
+      };
       this._prefixPosition = this.items.length;
-      prefix.content = function () {}; //Does not need a textNode Child!
+      prefix.initContent = function () {}; //Does not need a textNode Child!
       var prefItem = this.addItem(prefix);
       this._cItemPrefix = prefItem;
       prefItem._el["onclick"] = prefItem.onclick.bind(prefItem);
       if (this._menu !== undefined){
         this._menu._prefix=prefItem;
-      }
+      };
     },
     
     //Taken from Branch 5133
@@ -137,6 +148,7 @@
       this.items.splice(this.items.indexOf(item) , 1);
     },
 
+
     /**
      * Remove a containeritem from the container by its index. Should not be used with prefix.
      * CAUTION liveIndex, so what you see, is not the actual index within the containerItem list.
@@ -206,8 +218,11 @@
           this.position = 0;
           this._cItemPrefix.active(false); // usually the menu makes the prefix active anyway.
           this.item().active(true);
-        }
-      }
+        } else {
+          console.log("It appears that both containermenu and its container contain no selectable items.\
+ Let us hope there is no problem. - container.js");
+        };
+      };
     },
     
     /**
diff --git a/dev/js/src/container/containeritem.js b/dev/js/src/container/containeritem.js
index 6d0ef59..2e181ae 100644
--- a/dev/js/src/container/containeritem.js
+++ b/dev/js/src/container/containeritem.js
@@ -29,7 +29,7 @@
     else cl.remove("active"); //allows for setting it to inactive if not (equal to undefined or truthy)
   },
 
-  /**
+ /**
    * Get/create the document element of the container item. Can be overwritten. Standard class: li
    * If you wish to change the textNode please overwrite the content function instead.
    */
@@ -49,12 +49,12 @@
   },
 
   /**
-   * Get/create a TextNode with text "content". If content is left blank it gets set to this.defaultTextValue,
-   * or the empty string if it does not exists
+   * Set the items text content to "content". If content is left blank it gets set to this.defaultTextValue,
+   * or the empty string if a default value does not exists. Also decides how the text is represented.
    * @param {String} content String to which to set the text
    * @returns textNode with content or undefined
    */
-  content : function (content) {
+  initContent : function (content) {
     var newText; //set textNode to this
     if (arguments.length === 1) { //new value!
       newText = content;
diff --git a/dev/js/src/menu.js b/dev/js/src/menu.js
index 857c2db..dc998d1 100644
--- a/dev/js/src/menu.js
+++ b/dev/js/src/menu.js
@@ -191,6 +191,8 @@
     },
     
     // Initialize the item list
+    // returns true if the length of the resulting list is at least 1
+    // and there was a prefix value. Returns true if there was no prefix value set.
     _initList : function () {
       // Upon change also update alwaysmenu.js please
       const t = this;