Click here to close now.

Welcome!

You will be redirected in 30 seconds or close now.

ColdFusion Authors: Yakov Fain, Maureen O'Gara, Nancy Y. Nee, Tad Anderson, Daniel Kaar

Related Topics: Adobe Flex, ColdFusion, AJAX & REA

Adobe Flex: Tutorial

Adobe AIR: Creating Dock and System Tray Icon Menus

The AIR runtime allows you to manage and interact with the system tray and dock bar icons of your application

Many applications offer context menus associated with the application’s icon. On Windows systems, these menus are located in the system tray. If you’re working on a Mac OS X system, you’ll find these menus in the dock bar. Generally, these menus have shortcuts for the most common functions of the application you’re using. These menus might also contain commands that must be accessible even when the application is minimized or hidden by the desktop.

The AIR runtime allows you to manage and interact with the system tray and dock bar icons of your application. You can define context menus for them. On Microsoft Windows systems, the icons in the system tray don’t have any default context menus, so unless you have a specially prepared menu to display, it won’t provide a context menu. Mac OS X systems, on the other hand, have a default menu for dock bar icons. The menus you create will be added to the default menu provided by the operating system. You can’t modify or remove the default menus provided by the system for dock bar icons.

The application you will create in the next section will run on both Windows and Mac OS X.

Assigning a menu to an application icon
Start by opening the ch06p04.fla file in Flash CS4. The project, like the previous ones, only has an output TextArea. This TextArea will display the messages regarding the status of your application.

The project, as shown in Figure 6-13, displays an icon in the system tray or dock bar of the local system, which is why a symbol has been prepared in the library. The symbol is a movie clip: Application Icon, which represents the way you want to show the application icon. In the Symbol Properties panel, shown in Figure 6-14, the class name of the symbol has been specified: ApplicationIcon . This class name allows you to instantiate the symbol in the library via ActionScript.

0000f1306  
Figure 6-13. The stage and Library panel of the ch06p04.fla project

0000f1406 
Figure 6-14. The Symbol Properties panel

You access the document class of the Flash project by clicking the Edit class definition icon on the Document Properties panel. Like for the other projects in this chapter, the Flash project has been set up to not declare the variables automatically  for the elements on the stage. You’ll have to specify them yourself in the class associated with the project.

The class starts by declaring the namespace and the dependence on external classes, as shown here:

package com.comtaste.foed.essentialair.chapter6
{
import fl.controls.TextArea;
import flash.desktop.DockIcon;
import flash.desktop.NativeApplication;
import flash.desktop.SystemTrayIcon;
import flash.display.BitmapData;
import flash.display.MovieClip;
import flash.display.NativeMenu;
import flash.display.NativeMenuItem;
import flash.display.NativeWindow;
import flash.events.Event;
import flash.filesystem.File;
public class Ch06p04 extends MovieClip
{

Then you declare two class properties: one that refers to the component of the TextArea class on the stage of the project, and one to contain the native menu that the application will use:

// onstage components
public var output:TextArea;
// class properties
private var menuRoot:NativeMenu;

Next, the constructor method of the class will call the initialization of the native menu. It will check which options are supported by the local operating system. This method will also assign the menu to the menu bar of the application or window. Finally, it will assign the menu to the icon in the system tray or to the icon in the dock bar, depending on which one is available.

public function Ch06p04()
{
super();

You call the createNativeMenu() function to instantiate and populate the menu that will be used for the application as well as the application’s icon. Here’s the code:

// generate native menu to use
createNativeMenu();

Next, you check if the operating system supports application-level or window- level menus. After that, you assign the menu to the correct property on the basis of the functions of the operating system. This code accomplishes these tasks:

// assign to application menu if we are on Mac OS X
if ( NativeApplication.supportsMenu )
{
NativeApplication.nativeApplication.menu = menuRoot;
}
// assign to window menu if we are on Microsoft Windows
if ( NativeWindow.supportsMenu )
{
stage.nativeWindow.menu = menuRoot; }

Finally, you call the initIcon() method , which instantiates the ApplicationIcon symbol and uses its graphical representation as the application icon:

initIcon();
}

To instantiate and populate the native menu, you use the createNativeMenu() method , which assigns an instance of the NativeMenu class to the menuRoot class property. Then you add a submenu to the menu using the addItem() function of the NativeMenu class:

// create a complete native menu
private function createNativeMenu():void
{
// instantiate main menu object
menuRoot = new NativeMenu();
// append subMenus to menu root
menuRoot.addItem( createFirstSubMenu() );
}

The submenu is created and returned by the createFirstSubMenu() function , as shown here:

private function createFirstSubMenu():NativeMenuItem
{

Next, you create an instance of the NativeMenuItem class with a label of App settings. This object will be the element of the menu returned by the function. Then you assign an instance of the NativeMenu class to the submenu property of the element, so as to populate its list of items.

// create submenu
var subMenu:NativeMenuItem = new NativeMenuItem( "App settings" );
// initialize child container
subMenu.submenu = new NativeMenu();

You’ll add three methods to the menu, which will allow you to do the following:

Access the description of the application
Minimize the active window
Close the application

Each menu item is registered to an event listener method for the selection event, as shown here:

// create first child, register event listener for
// selection event and assign to submenu
var aboutCommand:NativeMenuItem = new NativeMenuItem( "About.." );
aboutCommand.addEventListener( Event.SELECT, getInformation );
subMenu.submenu.addItem( aboutCommand );
// create second child, register event listener for
// selection event and assign to submenu
var minimizeCommand:NativeMenuItem =
new NativeMenuItem( "Minimize" );
minimizeCommand.addEventListener( Event.SELECT,
minimizeApplication );
subMenu.submenu.addItem( minimizeCommand );
// create third child, register event listener for
// selection event and assign to submenu
var closeCommand:NativeMenuItem = new NativeMenuItem( "Close" );
closeCommand.addEventListener( Event.SELECT, closeApplication );
subMenu.submenu.addItem( closeCommand );
return subMenu;
}

The event listener functions for the three items on the native menu are the following, and have already been explained in detail in the previous exercise regarding application menus:

// get application description
private function getInformation( evt : Event ):void
{
// access to application XML descriptor
var appDescriptor:XML =
NativeApplication.nativeApplication.applicationDescriptor;
// retrieve XML descriptor namespace
var nsDeclaration:Namespace = appDescriptor.namespace();
// read description node from XML
var informationText:String = String( appDescriptor.nsDeclaration::description[ 0 ] );

// write into textarea 'output' description contents
output.appendText( "Adobe Air, test application for "
+ "menus functionalities." + File.lineEnding );
output.appendText( informationText + File.lineEnding );
}

// close application
private function closeApplication( e : Event ):void
{
NativeApplication.nativeApplication.exit();
}

// minimize application
private function minimizeApplication( e : Event ):void
{
stage.nativeWindow.minimize();
}

Preparing the application icon

Now all you have to do is correctly prepare the application icon. This is the task of the following initIcon() method , which is called at the end of the class constructor method:

// set up application icons
private function initIcon():void
{

First, you have to obtain an object of the BitmapData class to use as a graphical representation of the application icon. To do so, you have to instantiate the ApplicationIcon symbol in the ch06p04.fla project library .

Then create a local icon property, to which you assign an instance of the ApplicationIcon symbol. The local icon property is declared as a MovieClip, not an ApplicationIcon. This is possible because the ApplicationIcon symbol extends the MovieClip class , so it’s correct to say it’s a MovieClip. Inheritance is a fundamental concept for object- oriented programming languages like ActionScript 3.

// instanstiate icon symbol available in proj library
var icon:MovieClip = new ApplicationIcon();

Creating an object for raster representation
Now that you’ve instantiated the ApplicationIcon symbol, you have to create an object to be its raster representation. Begin by creating a BitmapData object . You specify the dimensions of its canvas as the dimensions of the icon instance you’ve just created. Then you draw the instance of the icon in the raster object using the draw() function of the BitmapData class. The draw() function allows you to draw any object that implements the IbitmapDrawable interface on the canvas of a BitmapData object. You can use this function to draw any object that implements the interface on the canvas of an object.
In ActionScript, this interface is implemented by the DisplayObject class and the Bitmap class . The following code accomplishes these tasks:

// access and save bitmapdata of icon
var iconImg:BitmapData = new BitmapData( icon.width, icon.height );
iconImg.draw( icon );

Next, you assign the raster representation of the icon for the application to the bitmaps property of the icon object of your AIR application. The bitmaps property is an array of raster representations of icons provided by an AIR application.

The runtime will use a representation with dimensions as similar as possible to the ones you’ve chosen (but exactly how similar depends on the local operating system and its graphical settings). The definition of the list of available icons for the application doesn’t depend on the local system, and you
always proceed as follows:

// define application icon
NativeApplication.nativeApplication.icon.bitmaps = [ iconImg ];

Using the correct class type for an application icon
According to the local operating system, the icon property of the nativeApplication object of the NativeApplication class can refer to instances of various classes. On Microsoft Windows systems, the icon represents an instance of the SystemTrayIcon class .
On Mac OS X systems, the icon represents an instance of the DockIcon class . You can check which type of icon is supported by checking the Boolean  supportsDockIcon and supportsSystemTrayIcon properties of the NativeApplication class , which let’s you know if the system supports dock icons or system tray icons, respectively.

Here’s an example of the NativeApplication class :

if ( NativeApplication.supportsDockIcon )
{

If the system supports DockIcon icons , you simply assign the native menu to the menu property of the icon object. The menu will be added on the one that is natively provided by the operating system. Here’s an example of the DockIcon icons:

// assign dock icon custom menu
DockIcon( NativeApplication.nativeApplication.icon ).menu = menuRoot;
}else if ( NativeApplication.supportsSystemTrayIcon )
{

If, on the other hand, the system supports SystemTrayIcon icons , you also define a string of text to be used as the icon’s tooltip. SystemTrayIcon icons don’t have a menu from the operating system—just the one you provided them. DockIcon icons don’t support tooltips.
Here’s an example of a SystemTrayIcon icon:

SystemTrayIcon( NativeApplication.nativeApplication.icon ).menu
= menuRoot;
// tooltip for tray icon, available only on Windows
SystemTrayIcon( NativeApplication.nativeApplication.icon ).tooltip = "Application settings";
}
}

Go back to the Flash ch06p04.fla project to execute the application and see the results of your work (Control > Test Movie). You can see the application icon with its activated context menu in Figures 6- 15 and 6- 16. The application will work both on operating systems that support SystemTrayIcon icons (Microsoft Windows) and systems that support DockIcon icons (Mac OS X).

0000f1506  
Figure 6-15. Application icon on Microsoft Windows systems

More Stories By Marco Casario

Marco Casario is CEO of Comtaste, a company devoted to develop Rich Internet Applications on the Web and for mobile devices.

He collaborates intensively with Adobe Italy as a speaker at conferences and as a consultant for Flash, Flex, and Flash Lite.

Learn more about Marco Casario at his blog http://casario.blogs.com. In 2005, Marco has founded Comtaste, a company dedicated to exploring new frontiers in Rich Internet Applications and the convergence between the web and the world of mobile devices — MobyMobile and YouThru are representative of their recent work. He is founder of the biggest worldwide Flash Lite User Group and of www.augitaly.com, a reference point for the Italian community of Adobe users, in which he carries out the role of Channel Manager for the section dedicated to Flex.

@ThingsExpo Stories
All major researchers estimate there will be tens of billions devices - computers, smartphones, tablets, and sensors - connected to the Internet by 2020. This number will continue to grow at a rapid pace for the next several decades. With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo, June 9-11, 2015, at the Javits Center in New York City. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be
The security devil is always in the details of the attack: the ones you've endured, the ones you prepare yourself to fend off, and the ones that, you fear, will catch you completely unaware and defenseless. The Internet of Things (IoT) is nothing if not an endless proliferation of details. It's the vision of a world in which continuous Internet connectivity and addressability is embedded into a growing range of human artifacts, into the natural world, and even into our smartphones, appliances, and physical persons. In the IoT vision, every new "thing" - sensor, actuator, data source, data con...
Container frameworks, such as Docker, provide a variety of benefits, including density of deployment across infrastructure, convenience for application developers to push updates with low operational hand-holding, and a fairly well-defined deployment workflow that can be orchestrated. Container frameworks also enable a DevOps approach to application development by cleanly separating concerns between operations and development teams. But running multi-container, multi-server apps with containers is very hard. You have to learn five new and different technologies and best practices (libswarm, sy...
SYS-CON Events announced today that DragonGlass, an enterprise search platform, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. After eleven years of designing and building custom applications, OpenCrowd has launched DragonGlass, a cloud-based platform that enables the development of search-based applications. These are a new breed of applications that utilize a search index as their backbone for data retrieval. They can easily adapt to new data sets and provide access to both structured and unstruc...
There's Big Data, then there's really Big Data from the Internet of Things. IoT is evolving to include many data possibilities like new types of event, log and network data. The volumes are enormous, generating tens of billions of logs per day, which raise data challenges. Early IoT deployments are relying heavily on both the cloud and managed service providers to navigate these challenges. In her session at Big Data Expo®, Hannah Smalltree, Director at Treasure Data, discussed how IoT, Big Data and deployments are processing massive data volumes from wearables, utilities and other machines...
Buzzword alert: Microservices and IoT at a DevOps conference? What could possibly go wrong? In this Power Panel at DevOps Summit, moderated by Jason Bloomberg, the leading expert on architecting agility for the enterprise and president of Intellyx, panelists will peel away the buzz and discuss the important architectural principles behind implementing IoT solutions for the enterprise. As remote IoT devices and sensors become increasingly intelligent, they become part of our distributed cloud environment, and we must architect and code accordingly. At the very least, you'll have no problem fil...
SYS-CON Events announced today that MetraTech, now part of Ericsson, has been named “Silver Sponsor” of SYS-CON's 16th International Cloud Expo®, which will take place on June 9–11, 2015, at the Javits Center in New York, NY. Ericsson is the driving force behind the Networked Society- a world leader in communications infrastructure, software and services. Some 40% of the world’s mobile traffic runs through networks Ericsson has supplied, serving more than 2.5 billion subscribers.
The 4th International Internet of @ThingsExpo, co-located with the 17th International Cloud Expo - to be held November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA - announces that its Call for Papers is open. The Internet of Things (IoT) is the biggest idea since the creation of the Worldwide Web more than 20 years ago.
The worldwide cellular network will be the backbone of the future IoT, and the telecom industry is clamoring to get on board as more than just a data pipe. In his session at @ThingsExpo, Evan McGee, CTO of Ring Plus, Inc., discussed what service operators can offer that would benefit IoT entrepreneurs, inventors, and consumers. Evan McGee is the CTO of RingPlus, a leading innovative U.S. MVNO and wireless enabler. His focus is on combining web technologies with traditional telecom to create a new breed of unified communication that is easily accessible to the general consumer. With over a de...
Disruptive macro trends in technology are impacting and dramatically changing the "art of the possible" relative to supply chain management practices through the innovative use of IoT, cloud, machine learning and Big Data to enable connected ecosystems of engagement. Enterprise informatics can now move beyond point solutions that merely monitor the past and implement integrated enterprise fabrics that enable end-to-end supply chain visibility to improve customer service delivery and optimize supplier management. Learn about enterprise architecture strategies for designing connected systems tha...
Cloud is not a commodity. And no matter what you call it, computing doesn’t come out of the sky. It comes from physical hardware inside brick and mortar facilities connected by hundreds of miles of networking cable. And no two clouds are built the same way. SoftLayer gives you the highest performing cloud infrastructure available. One platform that takes data centers around the world that are full of the widest range of cloud computing options, and then integrates and automates everything. Join SoftLayer on June 9 at 16th Cloud Expo to learn about IBM Cloud's SoftLayer platform, explore se...
SYS-CON Media announced today that 9 out of 10 " most read" DevOps articles are published by @DevOpsSummit Blog. Launched in October 2014, @DevOpsSummit Blog offers top articles, news stories, and blog posts from the world's well-known experts and guarantees better exposure for its authors than any other publication. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time to wait for long development cycles that produce softw...
With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo in Silicon Valley. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be! Internet of @ThingsExpo, taking place Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 17th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The Internet of Things (IoT) is the most profound change in personal an...
15th Cloud Expo, which took place Nov. 4-6, 2014, at the Santa Clara Convention Center in Santa Clara, CA, expanded the conference content of @ThingsExpo, Big Data Expo, and DevOps Summit to include two developer events. IBM held a Bluemix Developer Playground on November 5 and ElasticBox held a Hackathon on November 6. Both events took place on the expo floor. The Bluemix Developer Playground, for developers of all levels, highlighted the ease of use of Bluemix, its services and functionality and provide short-term introductory projects that developers can complete between sessions.
From telemedicine to smart cars, digital homes and industrial monitoring, the explosive growth of IoT has created exciting new business opportunities for real time calls and messaging. In his session at @ThingsExpo, Ivelin Ivanov, CEO and Co-Founder of Telestax, shared some of the new revenue sources that IoT created for Restcomm – the open source telephony platform from Telestax. Ivelin Ivanov is a technology entrepreneur who founded Mobicents, an Open Source VoIP Platform, to help create, deploy, and manage applications integrating voice, video and data. He is the co-founder of TeleStax, a...
The Internet of Things (IoT) promises to evolve the way the world does business; however, understanding how to apply it to your company can be a mystery. Most people struggle with understanding the potential business uses or tend to get caught up in the technology, resulting in solutions that fail to meet even minimum business goals. In his session at @ThingsExpo, Jesse Shiah, CEO / President / Co-Founder of AgilePoint Inc., showed what is needed to leverage the IoT to transform your business. He discussed opportunities and challenges ahead for the IoT from a market and technical point of vie...
Grow your business with enterprise wearable apps using SAP Platforms and Google Glass. SAP and Google just launched the SAP and Google Glass Challenge, an opportunity for you to innovate and develop the best Enterprise Wearable App using SAP Platforms and Google Glass and gain valuable market exposure. In his session at @ThingsExpo, Brian McPhail, Senior Director of Business Development, ISVs & Digital Commerce at SAP, outlined the timeline of the SAP Google Glass Challenge and the opportunity for developers, start-ups, and companies of all sizes to engage with SAP today.
The 3rd International @ThingsExpo, co-located with the 16th International Cloud Expo – to be held June 9-11, 2015, at the Javits Center in New York City, NY – is now accepting Hackathon proposals. Hackathon sponsorship benefits include general brand exposure and increasing engagement with the developer ecosystem. At Cloud Expo 2014 Silicon Valley, IBM held the Bluemix Developer Playground on November 5 and ElasticBox held the DevOps Hackathon on November 6. Both events took place on the expo floor. The Bluemix Developer Playground, for developers of all levels, highlighted the ease of use of...
Enthusiasm for the Internet of Things has reached an all-time high. In 2013 alone, venture capitalists spent more than $1 billion dollars investing in the IoT space. With "smart" appliances and devices, IoT covers wearable smart devices, cloud services to hardware companies. Nest, a Google company, detects temperatures inside homes and automatically adjusts it by tracking its user's habit. These technologies are quickly developing and with it come challenges such as bridging infrastructure gaps, abiding by privacy concerns and making the concept a reality. These challenges can't be addressed w...
The industrial software market has treated data with the mentality of “collect everything now, worry about how to use it later.” We now find ourselves buried in data, with the pervasive connectivity of the (Industrial) Internet of Things only piling on more numbers. There’s too much data and not enough information. In his session at @ThingsExpo, Bob Gates, Global Marketing Director, GE’s Intelligent Platforms business, to discuss how realizing the power of IoT, software developers are now focused on understanding how industrial data can create intelligence for industrial operations. Imagine ...