Famo.us Timbre app Scrollview - famo.us

Question

I'm new to Famo.us and I am trying to expand on the Timbre sample app by adding a scrollview to the PageView where the image would be (in the _createBody function). In other words, I'm trying to add a feed similar to Facebook or Tango, etc. I found two pieces of code online that's been working with (links below). I get no errors on the console log, yet the scrollview won't display, so I'm not sure what I am missing. Your guidance is much appreciated (would also love to know if there is a better way). Finally, this is my first post ever on StackOverflow, so please let me know if I can expose my issue in a better fashion.
Links I have been using for guidance:
StackOverflowFamo.us swipe on scrollview
JSFiddle
/*** AppView.js ***/
define(function(require, exports, module) {
var View = require('famous/core/View');
var Surface = require('famous/core/Surface');
var Modifier = require('famous/core/Modifier');
var Transform = require('famous/core/Transform');
var StateModifier = require('famous/modifiers/StateModifier');
var Easing = require('famous/transitions/Easing');
var Transitionable = require('famous/transitions/Transitionable');
var GenericSync = require('famous/inputs/GenericSync');
var MouseSync = require('famous/inputs/MouseSync');
var TouchSync = require('famous/inputs/TouchSync');
GenericSync.register({'mouse': MouseSync, 'touch': TouchSync});
var PageView = require('views/PageView');
var MenuView = require('views/MenuView');
var StripData = require('data/StripData');
function AppView() {
View.apply(this, arguments);
this.menuToggle = false;
this.pageViewPos = new Transitionable(0);
_createPageView.call(this);
_createMenuView.call(this);
_setListeners.call(this);
_handleSwipe.call(this);
}
AppView.prototype = Object.create(View.prototype);
AppView.prototype.constructor = AppView;
AppView.DEFAULT_OPTIONS = {
openPosition: 276,
transition: {
duration: 300,
curve: 'easeOut'
},
posThreshold: 138,
velThreshold: 0.75
};
function _createPageView() {
this.pageView = new PageView();
this.pageModifier = new Modifier({
transform: function() {
return Transform.translate(this.pageViewPos.get(), 0, 0);
}.bind(this)
});
this._add(this.pageModifier).add(this.pageView);
}
function _createMenuView() {
this.menuView = new MenuView({ stripData: StripData });
var menuModifier = new StateModifier({
transform: Transform.behind
});
this.add(menuModifier).add(this.menuView);
}
function _setListeners() {
this.pageView.on('menuToggle', this.toggleMenu.bind(this));
}
function _handleSwipe() {
var sync = new GenericSync(
['mouse', 'touch'],
{direction : GenericSync.DIRECTION_X}
);
this.pageView.pipe(sync);
sync.on('update', function(data) {
var currentPosition = this.pageViewPos.get();
if(currentPosition === 0 && data.velocity > 0) {
this.menuView.animateStrips();
}
this.pageViewPos.set(Math.max(0, currentPosition + data.delta));
}.bind(this));
sync.on('end', (function(data) {
var velocity = data.velocity;
var position = this.pageViewPos.get();
if(this.pageViewPos.get() > this.options.posThreshold) {
if(velocity < -this.options.velThreshold) {
this.slideLeft();
} else {
this.slideRight();
}
} else {
if(velocity > this.options.velThreshold) {
this.slideRight();
} else {
this.slideLeft();
}
}
}).bind(this));
}
AppView.prototype.toggleMenu = function() {
if(this.menuToggle) {
this.slideLeft();
} else {
this.slideRight();
this.menuView.animateStrips();
}
};
AppView.prototype.slideLeft = function() {
this.pageViewPos.set(0, this.options.transition, function() {
this.menuToggle = false;
}.bind(this));
};
AppView.prototype.slideRight = function() {
this.pageViewPos.set(this.options.openPosition, this.options.transition, function() {
this.menuToggle = true;
}.bind(this));
};
module.exports = AppView;
});
/*** PageView.js ***/
define(function(require, exports, module) {
var View = require('famous/core/View');
var Surface = require('famous/core/Surface');
var Transform = require('famous/core/Transform');
var StateModifier = require('famous/modifiers/StateModifier');
var HeaderFooter = require('famous/views/HeaderFooterLayout');
var ImageSurface = require('famous/surfaces/ImageSurface');
var Scrollview = require('famous/views/Scrollview');
function PageView() {
View.apply(this, arguments);
_createBacking.call(this);
_createLayout.call(this);
_createHeader.call(this);
_createBody.call(this);
_setListeners.call(this);
}
PageView.prototype = Object.create(View.prototype);
PageView.prototype.constructor = PageView;
PageView.DEFAULT_OPTIONS = {
headerSize: 44
};
function _createBacking() {
var backing = new Surface({
properties: {
backgroundColor: 'black',
boxShadow: '0 0 20px rgba(0,0,0,0.5)'
}
});
this.add(backing);
}
function _createLayout() {
this.layout = new HeaderFooter({
headerSize: this.options.headerSize
});
var layoutModifier = new StateModifier({
transform: Transform.translate(0, 0, 0.1)
});
this.add(layoutModifier).add(this.layout);
}
function _createHeader() {
var backgroundSurface = new Surface({
properties: {
backgroundColor: 'black'
}
});
this.hamburgerSurface = new ImageSurface({
size: [44, 44],
content : 'img/hamburger.png'
});
var searchSurface = new ImageSurface({
size: [232, 44],
content : 'img/search.png'
});
var iconSurface = new ImageSurface({
size: [44, 44],
content : 'img/icon.png'
});
var backgroundModifier = new StateModifier({
transform : Transform.behind
});
var hamburgerModifier = new StateModifier({
origin: [0, 0.5],
align : [0, 0.5]
});
var searchModifier = new StateModifier({
origin: [0.5, 0.5],
align : [0.5, 0.5]
});
var iconModifier = new StateModifier({
origin: [1, 0.5],
align : [1, 0.5]
});
this.layout.header.add(backgroundModifier).add(backgroundSurface);
this.layout.header.add(hamburgerModifier).add(this.hamburgerSurface);
this.layout.header.add(searchModifier).add(searchSurface);
this.layout.header.add(iconModifier).add(iconSurface);
}
function _createBody() {
var surfaces = [];
this.scrollview = new Scrollview();
var temp;
for (var i = 0; i < 30; i++) {
temp = new Surface({
size: [undefined, 80],
content: 'Surface: ' + (i + 1),
properties: {
textAlign: 'left',
lineHeight: '80px',
borderTop: '1px solid #000',
borderBottom: '1px solid #fff',
backgroundColor: '#ffff00',
fontFamily: 'Arial',
backfaceVisibility: 'visible',
paddingLeft: '10px'
}
});
temp.pipe(this.scrollview);
surfaces.push(temp);
}
this.scrollview.sequenceFrom(surfaces);
this.bodyContent = new Surface({
size: [undefined, undefined],
properties: {
backgroundColor: '#f4f4f4'
}
});
this.layout.content.add(this.bodyContent);
}
function _setListeners() {
this.hamburgerSurface.on('click', function() {
this._eventOutput.emit('menuToggle');
}.bind(this));
//this.bodyContent.pipe(this._eventOutput);
this.scrollview.pipe(this._eventOutput);
}
module.exports = PageView;
});

Answer 1

You need to add this.scrollview to your layout.content element on the page. Put this in place of this.bodyContent. layout.content is the node for the content of the page.
//this.layout.content.add(this.bodyContent);
this.layout.content.add(this.scrollview);