Scrollable text area on sencha touch 2 on iPad - extjs

Question

I'd like to make a full screen (or a part of screen) text area that user can scroll on iPad.
Something similar to the Notes.app: there's a screen/panel that can contain a lot of text, and it is scrollable.
If you tap on it, you can edit the text. 

Is there any suitable component or workaround?


Thanks!

Answer 1

As far as I know, TextArea in Sencha Touch doesn't have this "scrollable" property.
In my app I used a workaround, overriding the TextArea component, here is the code:
Ext.define('Ext.overrides.TextArea', {
override: 'Ext.form.TextArea',
initialize: function() {
this.callParent();
this.element.dom.addEventListener(
Ext.feature.has.Touch ? 'touchstart' : 'mousedown',
this.handleTouchListener = Ext.bind(this.handleTouch, this),
false);
this.element.dom.addEventListener(
Ext.feature.has.Touch ? 'touchmove' : 'mousemove',
this.handleMoveListener = Ext.bind(this.handleMove, this),
false);
this.moveListenersAttached = true;
},
destroy: function() {
// cleanup event listeners to avoid memory leak
if (this.moveListenersAttached) {
this.moveListenersAttached = false;
this.element.dom.removeEventListener(
Ext.feature.has.Touch ? 'touchstart' : 'mousedown',
this.handleTouchListener,
false);
this.element.dom.removeEventListener(
Ext.feature.has.Touch ? 'touchmove' : 'mousemove',
this.handleMoveListener,
false);
this.handleTouchListener = this.handleMoveListener = null;
};
this.callParent();
},
handleTouch: function(e) {
this.lastY = e.pageY;
},
handleMove: function(e) {
var textArea = e.target;
var top = textArea.scrollTop <= 0;
var bottom = textArea.scrollTop + textArea.clientHeight >= textArea.scrollHeight;
var up = e.pageY > this.lastY;
var down = e.pageY < this.lastY;
this.lastY = e.pageY;
// default (mobile safari) action when dragging past the top or bottom of a scrollable
// textarea is to scroll the containing div, so prevent that.
if((top && up) || (bottom && down)) e.preventDefault();
// Sencha disables textarea scrolling on iOS by default,
// so stop propagating the event to delegate to iOS.
if(!(top && bottom)) e.stopPropagation();
}
});