Part 1: Adding More Buttons

<div id="main" class="palm-hasheader">
<div class="palm-header">Add/Subtract</div>
&nbsp;&nbsp;The number is currently:
<div id="count" class="palm-body-text">count</div>
<div id="MyButton" name="MyButton1" x-mojo-element="Button"></div>
<div id="ButtonSubtract" name="ButtonSubtract" x-mojo-element="Button"></div>
<div id="ButtonClear" name="ButtonClear" x-mojo-element="Button"></div>
</div>

function FirstAssistant() {
/* this is the creator function for your scene assistant object. It will be passed all the
additional parameters (after the scene name) that were passed to pushScene. The reference
to the scene controller (this.controller) has not be established yet, so any initialization
that needs the scene controller should be done in the setup function below. */


}
FirstAssistant.prototype.handleButtonPress = function(event){
//increment the total and update the display
this.total++;
this.controller.get('count').update(this.total);
}

FirstAssistant.prototype.handleA = function(event){

//subtract the total and update the display

this.total--;
this.controller.get('count').update(this.total);
}

FirstAssistant.prototype.handleC = function(event){

//clear the total and update the display

this.total=0;
this.controller.get('count').update(this.total);
}

FirstAssistant.prototype.setup = function() {
/* this function is for setup tasks that have to happen when the scene is first created */

/* use Mojo.View.render to render view templates and add them to the scene, if needed. */

/* setup widgets here */

/* add event handlers to listen to events from widgets */
// set the initial total and display it
this.total=0;
this.controller.get('count').update(this.total);

// Setup Application Menu - Remove the comment below in the 2nd tutorial
//this.controller.setupWidget(Mojo.Menu.appMenu, AddSubMenuAttr, AddSubMenuModel);

// a local object for button attributes
this.buttonAttributes = {};

// a local object for button model
this.buttonModel = {
buttonLabel : 'Add 1',
buttonClass : 'affirmative',
disabled : false
};

// set up the buttons
this.controller.setupWidget("MyButton", this.buttonAttributes, this.buttonModel);

this.controller.setupWidget("ButtonSubtract", this.buttonAttributes, this.Model = {buttonLabel : 'Subtract', buttonClass : 'negative', disabled : false});

this.controller.setupWidget("ButtonClear", this.buttonAttributes, this.Model = {buttonLabel : 'Clear', buttonClass : '', disabled : false});

// bind the button to its handler
Mojo.Event.listen(this.controller.get('MyButton'), Mojo.Event.tap, this.handleButtonPress.bind(this));

//Bind event handler for Subtract button
Mojo.Event.listen(this.controller.get('ButtonSubtract'), Mojo.Event.tap,this.handleA.bind(this));

//Bind event handler for Clear button
Mojo.Event.listen(this.controller.get('ButtonClear'), Mojo.Event.tap,this.handleC.bind(this));
}

FirstAssistant.prototype.activate = function(event) {
/* put in event handlers here that should only be in effect when this scene is active. For
example, key handlers that are observing the document */
}


FirstAssistant.prototype.deactivate = function(event) {
/* remove any event handlers you added in activate and do any other cleanup that should happen before
this scene is popped or another scene is pushed on top */
}

FirstAssistant.prototype.cleanup = function(event) {
/* this function should do any cleanup needed before the scene is destroyed as
a result of being popped off the scene stack */
this.controller.stopListening(this.controller.get('MyButton'), Mojo.Event.tap, this.handleButtonPress.bind(this));

//Cleanup Subtraction button
this.controller.stopListening(this.controller.get('ButtonSubtract'), Mojo.Event.tap,this.handleA.bind(this))

//Cleanup Clear button
this.controller.stopListening(this.controller.get('ButtonClear'), Mojo.Event.tap,this.handleC.bind(this))
}