From 0f5ce5b76e969aab74e0de00b9c04e9bc8e30445 Mon Sep 17 00:00:00 2001
From: Max Lynch <max@codiqa.com>
Date: Mon, 16 Sep 2013 21:56:22 -0500
Subject: [PATCH] Basic NavController working with demo

---
 hacking/Button.js             |  7 +++
 hacking/NavBar.js             | 36 ++++++++++++-
 hacking/NavController.js      | 45 +++++++++++++++-
 hacking/NavController.unit.js | 42 +++++++++------
 hacking/nav.html              | 96 +++++++++++++++++++++++++++++++++++
 5 files changed, 208 insertions(+), 18 deletions(-)
 create mode 100644 hacking/Button.js
 create mode 100644 hacking/nav.html

diff --git a/hacking/Button.js b/hacking/Button.js
new file mode 100644
index 0000000000..33b46f20da
--- /dev/null
+++ b/hacking/Button.js
@@ -0,0 +1,7 @@
+(function(window, document, ionic) {
+  ionic.Button = function(opts) {
+    this.el = opts.el;
+  };
+  ionic.Button.prototype = {
+  }
+})(this, document, ionic = this.ionic || {});
diff --git a/hacking/NavBar.js b/hacking/NavBar.js
index f82ff447f2..2ca62e26a6 100644
--- a/hacking/NavBar.js
+++ b/hacking/NavBar.js
@@ -1,9 +1,43 @@
 (function(window, document, ionic) {
 
-  NavBar = function() {
+  NavBar = function(opts) {
+    this.el = opts.el;
+
+    this._titleEl = this.el.querySelector('.title');
   };
 
   NavBar.prototype = {
+    shouldGoBack: function() {},
+
+    setTitle: function(title) {
+      if(!this._titleEl) {
+        return;
+      }
+      this._titleEl.innerHTML = title;
+    },
+
+    showBackButton: function(shouldShow) {
+      var _this = this;
+
+      if(!this._currentBackButton) {
+        var back = document.createElement('a');
+        back.className = 'button back';
+        back.innerHTML = 'Back';
+
+        this._currentBackButton = back;
+        this._currentBackButton.onclick = function(event) {
+          _this.shouldGoBack && _this.shouldGoBack();
+        }
+      }
+
+      if(shouldShow && !this._currentBackButton.parentNode) {
+        // Prepend the back button
+        this.el.insertBefore(this._currentBackButton, this.el.firstChild);
+      } else if(!shouldShow && this._currentBackButton.parentNode) {
+        // Remove the back button if it's there
+        this._currentBackButton.parentNode.removeChild(this._currentBackButton);
+      }
+    }
   };
 })(this, document, ion = this.ionic || {});
 
diff --git a/hacking/NavController.js b/hacking/NavController.js
index a0d005177c..e5cd730500 100644
--- a/hacking/NavController.js
+++ b/hacking/NavController.js
@@ -1,7 +1,16 @@
 (function(window, document, ionic) {
   NavController = function(opts) {
+    var _this = this;
+
     this.navBar = opts.navBar;
+    this.content = opts.content;
     this.controllers = opts.controllers || [];
+
+
+    // TODO: Is this the best way?
+    this.navBar.shouldGoBack = function() {
+      _this.pop();
+    }
   };
 
   NavController.prototype = {
@@ -12,6 +21,8 @@
       return this.topController;
     },
     push: function(controller) {
+      var last = this.topController;
+
       this.controllers.push(controller);
 
       // Indicate we are switching controllers
@@ -23,27 +34,57 @@
 
       // Actually switch the active controllers
 
+      // Remove the old one
+      last && last.detach();
+
       // Grab the top controller on the stack
       var next = this.controllers[this.controllers.length - 1];
+
+      this.content.el.appendChild(next.el);
+
       // Switch to it (TODO: Animate or such things here)
       this.topController = next;
 
+      this._updateNavBar();
+
       return controller;
     },
 
-
     pop: function() {
       var next, last;
 
+      // Make sure we keep one on the stack at all times
+      if(this.controllers.length < 2) {
+        return;
+      }
+
       // Grab the controller behind the top one on the stack
       last = this.controllers.pop();
+      
+      // Remove the old one
+      last && last.detach();
 
       next = this.controllers[this.controllers.length - 1];
 
+      this.content.el.appendChild(next.el);
+
       // Switch to it (TODO: Animate or such things here)
       this.topController = next;
 
+      this._updateNavBar();
+
       return last;
-    }
+    },
+
+    _updateNavBar: function() {
+      this.navBar.setTitle(this.topController.title);
+
+      if(this.controllers.length > 1) {
+        this.navBar.showBackButton(true);
+      } else {
+        this.navBar.showBackButton(false);
+      }
+    },
+
   };
 })(this, document, this.ionic || {});
diff --git a/hacking/NavController.unit.js b/hacking/NavController.unit.js
index 6373c96fb0..0f8fdd2fb0 100644
--- a/hacking/NavController.unit.js
+++ b/hacking/NavController.unit.js
@@ -1,27 +1,41 @@
 describe('NavController', function() {
-  var ctrl;
+  var ctrl, navBarEl, contentEl;
+
+  var content = function(title) {
+    return {
+      el: document.createElement('div'),
+      title: title,
+      detach: function() {
+        this.el.parentNode && this.el.parentNode.removeChild(this.el);
+      },
+      attach: function() {
+      }
+    }
+  }
 
   beforeEach(function() {
+    navBarEl = document.createElement('div');
+    contentEl = document.createElement('div');
+
     ctrl = new NavController({
-      navBar: new NavBar()
+      navBar: new NavBar({el: navBarEl }),
+      content: { el: contentEl }
     });
   });
 
   it('Should load controllers', function() {
     ctrl = new NavController({
+      navBar: new NavBar({el: navBarEl }),
+      content: { el: contentEl },
       controllers: [{}]
     });
     expect(ctrl.getControllers().length).toEqual(1);
   });
 
   it('Should push controller', function() {
-    ctrl.push({
-      title: 'Page 1'
-    });
+    ctrl.push(content('Page 1'));
     expect(ctrl.getControllers().length).toEqual(1);
-    ctrl.push({
-      title: 'Page 2'
-    });
+    ctrl.push(content('Page 2'));
     expect(ctrl.getControllers().length).toEqual(2);
     var last = ctrl.pop();
     expect(ctrl.getControllers().length).toEqual(1);
@@ -30,19 +44,17 @@ describe('NavController', function() {
 
   it('Should change top view controller', function() {
     expect(ctrl.getTopController()).toBe(undefined);
-    var c1 = {
-      title: 'Page 1'
-    };
-    var c2 = {
-      title: 'Page 2'
-    };
+    var c1 = content('Page 1');
+    var c2 = content('Page 2');
     ctrl.push(c1);
     expect(ctrl.getTopController()).toEqual(c1);
     ctrl.push(c2);
     expect(ctrl.getTopController()).toEqual(c2);
     ctrl.pop();
     expect(ctrl.getTopController()).toEqual(c1);
+
+    // Make sure we can't pop the first one off
     ctrl.pop();
-    expect(ctrl.getTopController()).toEqual(undefined);
+    expect(ctrl.getTopController()).toEqual(c1);
   });
 });
diff --git a/hacking/nav.html b/hacking/nav.html
new file mode 100644
index 0000000000..a3dd32736d
--- /dev/null
+++ b/hacking/nav.html
@@ -0,0 +1,96 @@
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>Nav Bars</title>
+
+    <!-- Sets initial viewport load and disables zooming  -->
+    <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
+    <link href="/vendor/font-awesome/css/font-awesome.css" rel="stylesheet">
+    <link rel="stylesheet" href="../dist/ionic.css">
+  </head>
+  <body>
+
+    <section>
+
+      <header id="nav-bar" class="bar bar-header bar-dark">
+        <h1 class="title"></h1>
+      </header>
+
+      <main class="has-header content" id="content">
+      </main>
+    </section>
+
+    <script src="../../js/ionic-events.js"></script>
+    <script src="../../js/ionic-gestures.js"></script>
+    <script src="NavBar.js"></script>
+    <script src="NavController.js"></script>
+    <script>
+      // Grab the sections
+      var navBar = document.getElementById('nav-bar');
+
+      var controller = function(opts) {
+        this.el = opts.el;
+      }
+      controller.prototype = {
+        detach: function() {
+          //this.el.style.display = 'none';
+          var parentNode = this.el.parentNode;
+          if(!parentNode) {
+            return;
+          }
+          var next = this.el.nextSibling;
+          this._lastNodeSpot = next;
+          this._lastNodeParent = parentNode;
+          parentNode.removeChild(this.el);
+        },
+        attach: function() {
+          //this.el.style.display = 'block';
+          if(this._lastNodeSpot) {
+            this._lastNodeParent.insertBefore(this.el, this._lastNodeSpot);
+          }
+        }
+      };
+
+      var createPage = function(title) {
+        var d = document.createElement('div');
+        d.innerHTML = '<h3>' + title + '</h3><a href=#" class="next button button-success">Next</a>';
+        var c = new controller({
+          el: d
+        });
+        c.title = title;
+        return c;
+      };
+
+      var View = function(opts) {
+        this.el = opts.el;
+      };
+
+      var page1 = createPage('Home');
+      var page2 = createPage('About');
+      var page3 = createPage('Cats');
+      var page4 = createPage('Pizza');
+
+      var pages = [page1, page2, page3, page4];
+
+      var cd = document.getElementById('content');
+      var content = new View({
+        el: cd
+      });
+
+      var c = new NavController({
+        navBar: new NavBar({ el: navBar }),
+        content: content
+      });
+      c.push(page1);
+
+      var currentPage = 1;
+      document.addEventListener('click', function(event) {
+        if(event.target.classList.contains('next')) {
+          c.push(pages[currentPage++ % pages.length]);
+        }
+        return false;
+      });
+    </script>
+  </body>
+</html>
+