[flexcoders] Re: Flex 2:Package/Class problem
Well that definatly clears up a few things that were confusing me. Basicaly what I am doing is that we have several intrAnet applications that we are trying to create a central reporting system for. In all cases the reports will be based on a person or list of people. We have a tabed interface where the first tab lets the manager build the list of people. They can do this either by searching for and selecting individual people which builds a list of people's unique campus wide ID, or using departments and department codes, or eventually companies and company codes. When you click on the next tab it takes whichever type of list the manager built and generates a list of whatever in a dataGrid. You can then double click on a row and it uses a accordian to show a viewstack with all the details for that record. However instead of coding the visual part all in one mxml file I have a main mxml file with the search, then each additional tab I have in a seperate mxml file as a component. So in the tabNavigator I simply add lines like local:otdTab id=otdTabHandle/ When I am inside one of the components I want to access the same doubleclick function I use in the main mxml. However since the as file the doubleclick code is in is included in the main mxml the component can't see the function. I have to add the mx.core.Application.application. in order for the component to see it. So what I would rather do is just be able to add a include or something in the component making the functions already loaded in the main file available to the component file. --- In flexcoders@yahoogroups.com, Roger Gonzalez [EMAIL PROTECTED] wrote: This seems like you're talking about a couple different things here. I'm not sure I understand where mx.core.Application.application comes into it. You can do the same thing with source as you can with a SWC; Make a new directory tree, looks like you're using mrstd. Then, you'll make one source file per class (that you are currently putting in one file). Name the source file the same as the classname. BTW - several of your utility functions should probably really be static - there's no reason to create a class instance just to call a function when there are no vars on the object! Add the directory one level above the mrstd directory to your actionscript-classpath (either via the flex-config file or by setting it in FlexBuilder; Project ActionScript Build Path Class path. When you want to use these classes from some other file, just do import mrstd.*; Use the classes as you would expect. This should get you most of the way there. Ok, so what if you want to hand your mrstd classes off to someone else? Or maybe you don't want to keep compiling them? That's when you need a SWC. Unfortunately, the alpha build of FlexBuilder doesn't have any SWC support built-in, so you need to drop down to the command line. Run compc.exe -i source source source -o mrstd.swc Go back into FlexBuilder, and remove the mrstd directory from the classpath, and add the mrstd.swc file to the library path tab. Is this what you need? -Roger Roger Gonzalez mailto:[EMAIL PROTECTED] -Original Message- From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Greg Johnson Sent: Tuesday, November 01, 2005 11:45 AM To: flexcoders@yahoogroups.com Subject: [flexcoders] Re: Flex 2:Package/Class problem This is a part I didn't even get a chance to get into with 1.5 so im coming kinda late in 2. In my post you saw the functions that I want to make so I can use them all over without having to use mx.core.Application.application. every time I use one. Most of them I use in .as files not .mxml files. And the ones I use in the .mxml files I usually use as function calls. Like for a grid column that contains a date, I use the dateFunction parameter and give the function name. I have looked at the interface and class builder wizards. But didn't really get anywhere with them. I definatly need to optimize as much as I can as the applications I will be working on are going to be extensive in some cases. Can you point me somewhere that shows how to build a library that I can use in any code I have by just putting in the import mylib.whatever.*? Thanks Greg --- In flexcoders@yahoogroups.com, Roger Gonzalez [EMAIL PROTECTED] wrote: How so? A library isn't one file. You should package everything up by making a manifest file so that you can use your classes as MXML tags, and then use compc.exe to bundle a SWC. You can also bundle in additional stuff like icons and CSS and whatnot. Its a much more efficient distribution and packaging mechanism! -Roger Roger Gonzalez mailto:[EMAIL PROTECTED] -Original Message- From: flexcoders@yahoogroups.com
RE: [flexcoders] Re: Flex 2:Package/Class problem
When I am inside one of the components I want to access the
same doubleclick function I use in the main mxml. However
since the as file the doubleclick code is in is included in
the main mxml the component can't see the function. I have
to add the mx.core.Application.application. in order for
the component to see it.
The key here is to stop thinking about it as inclusion. That will
lead to very brittle applications where you can't easily write reusable
code.
What you need to do is to have your application pass a reference to
either your application or pieces of your application down to your
helper classes. One option is to simply pass a reference to a
particular Function down to your helper code. However, I prefer using
interfaces; here's an example:
I'm going to skip a lot of syntactic sugar (imports and package and
whatnot) in order to try to type this in this lousy email IDE. No
promises that it will actually work, I haven't tested this because
Microsoft Outlook doesn't have a run button. :-)
// IGreeting.as - interface for things that know how to print greetings
public interface IGreeting
{
function get greet():String;
}
// World.as - a little object that uses the services of a greeter
public class World
{
public function set greeting( greeting:IGreeting ):Void
{
_greeting = greeting;
}
public function get print():String
{
return _greeting.greet + world;
}
private var _greeting:IGreeting;
}
// MyApp.mxml - an app that implements the IGreeting interface and lets
// its services be used by the World object. (Could just as easily be
an .as app!)
mx:Application implements=IGreeting initialize=setup()
mx:Script
private var world:World = new World();
private function setup():Void
{
world.greeting = this;
}
public function get greet()
{
return hello;
}
/mx:Script
mx:Button label={world.print} /
/mx:Application
So, if I were writing this stuff, I might not want to have the IGreeting
implementation in the app, I might want to reuse that as well. So, lets
treat it as a sort of mixin...
// HelloGreeter.as
public class HelloGreeter implements IGreeting
{
public function get greet()
{
return hello;
}
}
Just for kicks, lets add a different IGreeting implementation.
// HowdyGreeter.as
public class HowdyGreeter implements IGreeting
{
public function get greet()
{
return howdy;
}
}
// MyApp.mxml - mostly the same app, except this one delegates the
greetings.
// We'll also make it so it can change greeters on the fly
mx:Application initialize=setup()
mx:Script
private var world:World;
private function setup():Void
{
world = new World();
world.greeting = new HelloGreeter();
}
private function change():Void
{
world.greeting = new HowdyGreeter();
}
/mx:Script
mx:Button label={world.print} /
mx:Button label=change the greeting click=change() /
/mx:Application
All of the reusable classes (IGreeting, HelloGreeter, HowdyGreeter,
World) could easily be put off in a dedicated package hierarchy so that
they could be shared between multiple apps. To really encapsulate them,
package them up into a SWC library using compc.exe.
Hope this gives you some ideas,
-rg
-Original Message-
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Greg Johnson
Sent: Wednesday, November 02, 2005 6:05 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Flex 2:Package/Class problem
Well that definatly clears up a few things that were confusing me.
Basicaly what I am doing is that we have several intrAnet
applications that we are trying to create a central reporting
system for.
In all cases the reports will be based on a person or list of
people. We have a tabed interface where the first tab lets
the manager build the list of people. They can do this
either by searching for and selecting individual people which
builds a list of people's unique campus wide ID, or using
departments and department codes, or eventually companies and
company codes.
When you click on the next tab it takes whichever type of
list the manager built and generates a list of whatever in a
dataGrid. You can then double click on a row and it uses a
accordian to show a viewstack with all the details for that record.
However instead of coding the visual part all in one mxml
file I have a main mxml file with the search, then each
additional tab I have in a seperate mxml file as a component.
So in the tabNavigator I simply add lines like local:otdTab
id=otdTabHandle/
When I am inside one of the components I want to access the
same doubleclick function I use in the main mxml. However
since the as file the doubleclick code is in is included in
the main mxml the component can't see the function. I have
to add the mx.core.Application.application. in order
[flexcoders] Re: Flex 2:Package/Class problem
Hmm, well that pokes a hole in that plan. If I have to create a
bunch of different files it kinda is contrary to my goal of combining
things into one main generic library :(
--- In flexcoders@yahoogroups.com, Geoffrey Williams [EMAIL PROTECTED]
wrote:
You can only have one public function / class / prop per .as file.
Also, the
.as files name must match that of the function / class / prop.
-Original Message-
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On
Behalf Of Greg Johnson
Sent: Tuesday, November 01, 2005 9:43 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Flex 2:Package/Class problem
I am tryinig to create a class with functions that I use repeatedly
so I can just include them in different components/applications.
As
far as I can tell I have written it correctly, but when I use an
include, and they try calling one of the functions, it doesn't work.
Here is the package
package mrstd{
// Imported Libraries
import mx.managers.PopUpManager;
import mx.containers.TitleWindow;
import mx.controls.gridclasses.DataGridColumn;
import mx.managers.DragManager;
import mx.events.DragEvent;
import mx.formatters.*
import flash.util.Timer;
// Standard Library Class
public class stdlib {
// Does what it says, used when a function has to be
called, but you don't actually want to do anything
public function doNothing():Void {}
// Get Today's Date as a string
public function getToday():String {
var today_date:Date = new Date();
var date_str:String = ((today_date.getMonth()
+1)+/+today_date.getDate()+/+today_date.getFullYear());
return date_str;
}
}
// Mouse Related Functions
public class mouseHandlers {
// Handles drag and drop events.
public function doDragDrop(event:DragEvent):Void {
private var items:Array =
event.dragSource.dataForFormat(items);
private var dest:Object = event.currentTarget;
private var dropLoc:int = dest.getDropLocation
();
dest.hideDropFeedback(event);
items.reverse();
var l:int = items.length;
for(var i:int = 0; i l; i++) {
dest.dataProvider.addItemAt(items[i],
dropLoc);
}
event.preventDefault();
}
// Variables used for detectDoubleClick function
private var lastClick:int = 0;
private var lastObject:Object = new Object();;
private var lastIndex:int = 0;
private var maxTicks:int = 300;
// Detect if a double click was made and if so, call
a function
public function detectDoubleClick(event:Object,
functionToCall:Function, ... args):Void {
var currentClick:int;
var currentObject:Object;
var currentIndex:int;
var clickDif:int;
currentClick = getTimer();
currentObject = event.target;
currentIndex = event.index;
clickDif = currentClick - lastClick;
if( clickDif = maxTicks currentObject ==
lastObject currentIndex == lastIndex ) {
lastClick = currentClick;
lastObject = currentObject;
lastIndex = currentIndex;
if (args[0] == null) {
functionToCall();
} else {
functionToCall(args);
}
}
lastClick = currentClick;
lastObject = currentObject;
lastIndex = currentIndex;
}
}
// Standard Formaters
public class formaters {
private var StdMoneyFormat:CurrencyFormatter = new
CurrencyFormatter();
private var StdDateFormat:DateFormatter = new
DateFormatter();
StdMoneyFormat.precision=2;
// Formats a dataGrid cell as money
public function formatMoney(dpItem:Object,
dgColumn:DataGridColumn):String {
return StdMoneyFormat.format(dpItem
[dgColumn.columnName]);
}
// Formats a dataGrid cell as a date
public function formatDate(dpItem:Object,
dgColumn:DataGridColumn):String {
return StdDateFormat.format(dpItem
RE: [flexcoders] Re: Flex 2:Package/Class problem
How so? A library isn't one file.
You should package everything up by making a manifest file so that you
can use your classes as MXML tags, and then use compc.exe to bundle a
SWC. You can also bundle in additional stuff like icons and CSS and
whatnot.
Its a much more efficient distribution and packaging mechanism!
-Roger
Roger Gonzalez
mailto:[EMAIL PROTECTED]
-Original Message-
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Greg Johnson
Sent: Tuesday, November 01, 2005 8:05 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Flex 2:Package/Class problem
Hmm, well that pokes a hole in that plan. If I have to create a
bunch of different files it kinda is contrary to my goal of combining
things into one main generic library :(
--- In flexcoders@yahoogroups.com, Geoffrey Williams [EMAIL PROTECTED]
wrote:
You can only have one public function / class / prop per .as file.
Also, the
.as files name must match that of the function / class / prop.
-Original Message-
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On
Behalf Of Greg Johnson
Sent: Tuesday, November 01, 2005 9:43 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Flex 2:Package/Class problem
I am tryinig to create a class with functions that I use repeatedly
so I can just include them in different components/applications.
As
far as I can tell I have written it correctly, but when I use an
include, and they try calling one of the functions, it doesn't work.
Here is the package
package mrstd{
// Imported Libraries
import mx.managers.PopUpManager;
import mx.containers.TitleWindow;
import mx.controls.gridclasses.DataGridColumn;
import mx.managers.DragManager;
import mx.events.DragEvent;
import mx.formatters.*
import flash.util.Timer;
// Standard Library Class
public class stdlib {
// Does what it says, used when a function has to be
called, but you don't actually want to do anything
public function doNothing():Void {}
// Get Today's Date as a string
public function getToday():String {
var today_date:Date = new Date();
var date_str:String = ((today_date.getMonth()
+1)+/+today_date.getDate()+/+today_date.getFullYear());
return date_str;
}
}
// Mouse Related Functions
public class mouseHandlers {
// Handles drag and drop events.
public function doDragDrop(event:DragEvent):Void {
private var items:Array =
event.dragSource.dataForFormat(items);
private var dest:Object = event.currentTarget;
private var dropLoc:int = dest.getDropLocation
();
dest.hideDropFeedback(event);
items.reverse();
var l:int = items.length;
for(var i:int = 0; i l; i++) {
dest.dataProvider.addItemAt(items[i],
dropLoc);
}
event.preventDefault();
}
// Variables used for detectDoubleClick function
private var lastClick:int = 0;
private var lastObject:Object = new Object();;
private var lastIndex:int = 0;
private var maxTicks:int = 300;
// Detect if a double click was made and if so, call
a function
public function detectDoubleClick(event:Object,
functionToCall:Function, ... args):Void {
var currentClick:int;
var currentObject:Object;
var currentIndex:int;
var clickDif:int;
currentClick = getTimer();
currentObject = event.target;
currentIndex = event.index;
clickDif = currentClick - lastClick;
if( clickDif = maxTicks currentObject ==
lastObject currentIndex == lastIndex ) {
lastClick = currentClick;
lastObject = currentObject;
lastIndex = currentIndex;
if (args[0] == null) {
functionToCall();
} else {
functionToCall(args);
}
}
lastClick = currentClick;
lastObject = currentObject;
lastIndex = currentIndex;
}
}
// Standard Formaters
public class formaters {
private var StdMoneyFormat:CurrencyFormatter = new
[flexcoders] Re: Flex 2:Package/Class problem
This is a part I didn't even get a chance to get into with 1.5 so im
coming kinda late in 2.
In my post you saw the functions that I want to make so I can use
them all over without having to
use mx.core.Application.application. every time I use one.
Most of them I use in .as files not .mxml files. And the ones I use
in the .mxml files I usually use as function calls. Like for a grid
column that contains a date, I use the dateFunction parameter and
give the function name.
I have looked at the interface and class builder wizards. But
didn't really get anywhere with them. I definatly need to optimize
as much as I can as the applications I will be working on are going
to be extensive in some cases.
Can you point me somewhere that shows how to build a library that I
can use in any code I have by just putting in the import
mylib.whatever.*?
Thanks
Greg
--- In flexcoders@yahoogroups.com, Roger Gonzalez [EMAIL PROTECTED]
wrote:
How so? A library isn't one file.
You should package everything up by making a manifest file so that
you
can use your classes as MXML tags, and then use compc.exe to bundle
a
SWC. You can also bundle in additional stuff like icons and CSS and
whatnot.
Its a much more efficient distribution and packaging mechanism!
-Roger
Roger Gonzalez
mailto:[EMAIL PROTECTED]
-Original Message-
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Greg Johnson
Sent: Tuesday, November 01, 2005 8:05 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Flex 2:Package/Class problem
Hmm, well that pokes a hole in that plan. If I have to create a
bunch of different files it kinda is contrary to my goal of
combining
things into one main generic library :(
--- In flexcoders@yahoogroups.com, Geoffrey Williams
[EMAIL PROTECTED]
wrote:
You can only have one public function / class / prop per .as
file.
Also, the
.as files name must match that of the function / class / prop.
-Original Message-
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On
Behalf Of Greg Johnson
Sent: Tuesday, November 01, 2005 9:43 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Flex 2:Package/Class problem
I am tryinig to create a class with functions that I use
repeatedly
so I can just include them in different
components/applications.
As
far as I can tell I have written it correctly, but when I use
an
include, and they try calling one of the functions, it doesn't
work.
Here is the package
package mrstd{
// Imported Libraries
import mx.managers.PopUpManager;
import mx.containers.TitleWindow;
import mx.controls.gridclasses.DataGridColumn;
import mx.managers.DragManager;
import mx.events.DragEvent;
import mx.formatters.*
import flash.util.Timer;
// Standard Library Class
public class stdlib {
// Does what it says, used when a function has to be
called, but you don't actually want to do anything
public function doNothing():Void {}
// Get Today's Date as a string
public function getToday():String {
var today_date:Date = new Date();
var date_str:String = ((today_date.getMonth()
+1)+/+today_date.getDate()+/+today_date.getFullYear());
return date_str;
}
}
// Mouse Related Functions
public class mouseHandlers {
// Handles drag and drop events.
public function doDragDrop(event:DragEvent):Void {
private var items:Array =
event.dragSource.dataForFormat(items);
private var dest:Object = event.currentTarget;
private var dropLoc:int = dest.getDropLocation
();
dest.hideDropFeedback(event);
items.reverse();
var l:int = items.length;
for(var i:int = 0; i l; i++) {
dest.dataProvider.addItemAt(items[i],
dropLoc);
}
event.preventDefault();
}
// Variables used for detectDoubleClick function
private var lastClick:int = 0;
private var lastObject:Object = new Object();;
private var lastIndex:int = 0;
private var maxTicks:int = 300;
// Detect if a double click was made and if so, call
a function
public function detectDoubleClick(event:Object,
functionToCall:Function, ... args):Void {
var currentClick:int;
var currentObject:Object;
var currentIndex:int;
var clickDif:int;
currentClick = getTimer();
currentObject = event.target
RE: [flexcoders] Re: Flex 2:Package/Class problem
This seems like you're talking about a couple different things here.
I'm not sure I understand where mx.core.Application.application comes
into it.
You can do the same thing with source as you can with a SWC;
Make a new directory tree, looks like you're using mrstd.
Then, you'll make one source file per class (that you are currently
putting in one file). Name the source file the same as the classname.
BTW - several of your utility functions should probably really be static
- there's no reason to create a class instance just to call a function
when there are no vars on the object!
Add the directory one level above the mrstd directory to your
actionscript-classpath (either via the flex-config file or by setting it
in FlexBuilder; Project ActionScript Build Path Class path.
When you want to use these classes from some other file, just do
import mrstd.*;
Use the classes as you would expect.
This should get you most of the way there.
Ok, so what if you want to hand your mrstd classes off to someone else?
Or maybe you don't want to keep compiling them? That's when you need a
SWC. Unfortunately, the alpha build of FlexBuilder doesn't have any SWC
support built-in, so you need to drop down to the command line.
Run compc.exe -i source source source -o mrstd.swc
Go back into FlexBuilder, and remove the mrstd directory from the
classpath, and add the mrstd.swc file to the library path tab.
Is this what you need?
-Roger
Roger Gonzalez
mailto:[EMAIL PROTECTED]
-Original Message-
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Greg Johnson
Sent: Tuesday, November 01, 2005 11:45 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Flex 2:Package/Class problem
This is a part I didn't even get a chance to get into with 1.5 so im
coming kinda late in 2.
In my post you saw the functions that I want to make so I can use
them all over without having to
use mx.core.Application.application. every time I use one.
Most of them I use in .as files not .mxml files. And the ones I use
in the .mxml files I usually use as function calls. Like for a grid
column that contains a date, I use the dateFunction parameter and
give the function name.
I have looked at the interface and class builder wizards. But
didn't really get anywhere with them. I definatly need to optimize
as much as I can as the applications I will be working on are going
to be extensive in some cases.
Can you point me somewhere that shows how to build a library that I
can use in any code I have by just putting in the import
mylib.whatever.*?
Thanks
Greg
--- In flexcoders@yahoogroups.com, Roger Gonzalez [EMAIL PROTECTED]
wrote:
How so? A library isn't one file.
You should package everything up by making a manifest file so that
you
can use your classes as MXML tags, and then use compc.exe to bundle
a
SWC. You can also bundle in additional stuff like icons and CSS and
whatnot.
Its a much more efficient distribution and packaging mechanism!
-Roger
Roger Gonzalez
mailto:[EMAIL PROTECTED]
-Original Message-
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Greg Johnson
Sent: Tuesday, November 01, 2005 8:05 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Flex 2:Package/Class problem
Hmm, well that pokes a hole in that plan. If I have to create a
bunch of different files it kinda is contrary to my goal of
combining
things into one main generic library :(
--- In flexcoders@yahoogroups.com, Geoffrey Williams
[EMAIL PROTECTED]
wrote:
You can only have one public function / class / prop per .as
file.
Also, the
.as files name must match that of the function / class / prop.
-Original Message-
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On
Behalf Of Greg Johnson
Sent: Tuesday, November 01, 2005 9:43 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Flex 2:Package/Class problem
I am tryinig to create a class with functions that I use
repeatedly
so I can just include them in different
components/applications.
As
far as I can tell I have written it correctly, but when I use
an
include, and they try calling one of the functions, it doesn't
work.
Here is the package
package mrstd{
// Imported Libraries
import mx.managers.PopUpManager;
import mx.containers.TitleWindow;
import mx.controls.gridclasses.DataGridColumn;
import mx.managers.DragManager;
import mx.events.DragEvent;
import mx.formatters.*
import flash.util.Timer;
// Standard Library Class
public class stdlib {
// Does what it says, used when a
function has to be
called, but you don't actually want to do
