Re: [flexcoders] XMLListCollection DataGrid Performance vs Any Other DataProvider Type
I don’t know of any links off-hand. I would simply create a class with the set of properties you are interested in, then take the XML and parse it into instances of that class. You can try to get XMLDecoder to do it, but sometimes it is more efficient just to write your own converter. On 4/29/10 7:50 PM, Angelo Anolin angelo_ano...@yahoo.com wrote: Any link to show us some samples? My data is coming from a .NET backend and most of it are in XML format and parsed into XMLListCollection. Would appreciate some more info on this. THanks. From: Alex Harui aha...@adobe.com To: flexcoders@yahoogroups.com flexcoders@yahoogroups.com Sent: Wed, 28 April, 2010 21:49:52 Subject: Re: [flexcoders] XMLListCollection DataGrid Performance vs Any Other DataProvider Type Convert the XML to Class instances. On 4/28/10 10:06 AM, jamesfin james.alan.finnigan @gmail.com wrote: Here's the scenario... Simple datagrid with XMLListCollection data provider. Average collection size is 200 rows of XML (shown below) 10 columns in the datagrid with a unique item renderer for each. 1 Column can display 1 of 10 embedded images depending on an xml attribute. AS3-only Renderers are highly optimized. Average visible rows = 30 (simultaneously visible rows / meaning at least 300 renderers being recycled when scrolling? Typical XML row data foodata fooid=4997 fooid2=0 fooid3=2909 foot=9 startdate=2010-04-09 13:45:00 enddate=2010-04-09 14:45:00 foost=1 fooname=New Foobar foosub=More Foobardata fooloc=false fooonly=false /foodata When all said and done being loaded, vertical scrolling is noticeably slow on a new iMac (Safari or Firefox with latest FlashPlayer) compared to a stripped down non-XML data provider version which scrolls quickly. Googling consensus shows that XMLListCollection is not the optimal dataprovider in this scenario and that XML in general is not the best choice if it can be avoided. Can anybody shed any light on a better way to improve scrolling performance based upon this scenario? Thanks in advance. -- Alex Harui Flex SDK Team Adobe System, Inc. http://blogs.adobe.com/aharui
Re: [flexcoders] [FB4] Creating a simple Sprite inside a Component
It depends. Just like in Flex 3, there are some “rules” to being a child
component in the Flex framework and Wprites are generally too low-level to be
used everywhere. There is documentation and examples on writing a custom
component and various methods you have to implement to get the component to
display correctly. The rules are a bit different for Flex 4, but mostly the
same.
You can probably use Group or SpriteVisualElement instead of Sprite but again,
they may not size correctly unless you follow the rules.
On 4/29/10 9:40 AM, helmutgranda helmutgra...@yahoo.com wrote:
I am trying to create a simple sprite that I can draw to during instantiation
but I keep getting error after error and here is one of the most common one:
error
Multiple markers at this line:
-SkinnableContainer
-Could not resolve s:Sprite to a component implementation.
/error
All I want to do is create a sprite with one color which then will listen to
different events during the life of the application and then display a color
that reflects the event dispatched.
Here is some code:
fx:Script
![CDATA[
private const spr1:Sprite = new Sprite();
private const spr2:Sprite = new Sprite();
private function init():void {
spr1.graphics.beginFill(0xFF, 0.5);
spr1.graphics.drawRect(10, 10, 100, 80);
spr1.graphics.endFill();
dom.addChild(spr1);
spr2.graphics.beginFill(0xFF, 0.3);
spr2.graphics.drawRect(20, 20, 80, 100);
spr2.graphics.endFill();
dom.addChild(spr2);
}
]]
/fx:Script
s:Sprite x=33 y=38 width=200 height=200 id=dom
/s:Sprite
Now if I change the Sprite to a Button it works as expected and it does because
the Button subclasses spark.components so if that is the only way to get around
it what would be the spark.component that would give me the freedom I want?
TIA
--
Alex Harui
Flex SDK Team
Adobe System, Inc.
http://blogs.adobe.com/aharui
Re: [flexcoders] Re: Thoughts on Flash by Steve Jobs
Global exception handling is in FP 10.1 and AIR 2.0. There should be better printing APIs in AIR 2.0 as well. These new features are not leveraged in the Flex framework because they were not committed until too late in our schedule for Flex 4.0, but they were committed before Jobs starting posting about Flash. On 4/29/10 9:33 PM, mitek17 mite...@gmail.com wrote: --- In flexcoders@yahoogroups.com mailto:flexcoders%40yahoogroups.com , Seth Caldwell w...@... wrote: Steve is employing several tactics used by politicians. The iphone is not open. iPhone is a device, not a technology. Technology should be open, device software could be proprietary. Steve stresses it particularly, please read Job's message more throroughly. I hope that the pressure from Jobs will finally make Adobe get cracking. Hey, what's with Linux support? What is happening with exception handling? are we there yet? No? Adobe, are you still busy with FX prefix? How many more years it will take to implement the feature which should appear first in any development platform. It took us YEARS (sic!) for voting, whinging and asking to fix the bugs and provide basic features. Printing support? Forget it, the company which invented PDF Postscript is too busy with something else. Adobe, please wake up and make your call, otherwise it will be too late. PS By waking up I don't mean submitting another pile of letters to FTC :) -- Alex Harui Flex SDK Team Adobe System, Inc. http://blogs.adobe.com/aharui
[flexcoders] Re: Thoughts on Flash by Steve Jobs
https://bugs.adobe.com/jira/browse/FP-444 Created: 06/21/07 03:43 PM Is it already available? 10.1 is still pre-release beta with no API available for GEH. Almost 3 years...And counting. Printing improvements in Flex 4? Well, we have to trasnform 300 000 lines of code into Flex 4 first to check it. Does it finally do a second pass on validNextPage()? Alex, a question for you. Does anyone at Flex SDK Team know what's happening with matrix transform and properties of Flex containers? Flash itself respects transform method and updates all properties correctly. Is there any reason why the Flex containers are not updating their own properies after transform? PS I am a strong Flex/Flash platform supporter and we are working on a huge project written in Flex 3 and I want to see Flex/Flash alive. But with the current state of developers support and overall approach to the platform I would say that Adobe is not going to make it. Cheers, Dmitri. --- In flexcoders@yahoogroups.com, Alex Harui aha...@... wrote: Global exception handling is in FP 10.1 and AIR 2.0. There should be better printing APIs in AIR 2.0 as well. These new features are not leveraged in the Flex framework because they were not committed until too late in our schedule for Flex 4.0, but they were committed before Jobs starting posting about Flash. On 4/29/10 9:33 PM, mitek17 mite...@... wrote: --- In flexcoders@yahoogroups.com mailto:flexcoders%40yahoogroups.com , Seth Caldwell wiz@ wrote: Steve is employing several tactics used by politicians. The iphone is not open. iPhone is a device, not a technology. Technology should be open, device software could be proprietary. Steve stresses it particularly, please read Job's message more throroughly. I hope that the pressure from Jobs will finally make Adobe get cracking. Hey, what's with Linux support? What is happening with exception handling? are we there yet? No? Adobe, are you still busy with FX prefix? How many more years it will take to implement the feature which should appear first in any development platform. It took us YEARS (sic!) for voting, whinging and asking to fix the bugs and provide basic features. Printing support? Forget it, the company which invented PDF Postscript is too busy with something else. Adobe, please wake up and make your call, otherwise it will be too late. PS By waking up I don't mean submitting another pile of letters to FTC :) -- Alex Harui Flex SDK Team Adobe System, Inc. http://blogs.adobe.com/aharui
Re: [flexcoders] Thoughts on Flash by Steve Jobs
On Thursday 29 Apr 2010 21:08:42 you wrote: Hi, I want to share this (http://www.apple.com/hotnews/thoughts-on-flash/) with the people who hasn't read it before and maybe read your comments on this topic. /me puts down his smart phone with a full Flash player with great performance That article is so wrong, in so many places, but the corrections will never get the same exposure. Good tactic, unfortunately. -- Tom Chiverton Helping to assertively grow cross-platform initiatives as part of the IT team of the year 2010, '09 and '08 This email is sent for and on behalf of Halliwells LLP. Halliwells LLP is a limited liability partnership registered in England and Wales under registered number OC307980 whose registered office address is at Halliwells LLP, 3 Hardman Square, Spinningfields, Manchester, M3 3EB. A list of members is available for inspection at the registered office together with a list of those non members who are referred to as partners. We use the word ?partner? to refer to a member of the LLP, or an employee or consultant with equivalent standing and qualifications. Regulated by the Solicitors Regulation Authority. CONFIDENTIALITY This email is intended only for the use of the addressee named above and may be confidential or legally privileged. If you are not the addressee you must not read it and must not use any information contained in nor copy it nor inform any person other than Halliwells LLP or the addressee of its existence or contents. If you have received this email in error please delete it and notify Halliwells LLP IT Department on 0870 365 2500. For more information about Halliwells LLP visit www.halliwells.com.
[flexcoders] Re: Prevent number splitting into two lines when using space as thousand separator
Hey, thanks. Thought everything (even making my own custom logic for checking if the values are higher than 999) but this. :D So adding numberformatter.thousandsSeparatorTo = #xA0;; instead of thousandsSeparatorTo = ; did the trick. :) Thanks again. :) Cheers, Jukka --- In flexcoders@yahoogroups.com, Oleg Sivokon olegsivo...@... wrote: Use non-breaking space?
[flexcoders] setters on my repeated custom component fire twice
I am using a repeater to display thumbnails. The repeated component is a custom
component includes a setter for the image property. When the setter runs, it
loads an external image.
The problem is that when I change the repeater's data provider, it appears that
the setters for the images fire twice; once when the data provider is changed
but before the repeater starts, and then again when the repeater runs.
As a result, each component loads it's image twice, which uses extra bandwidth.
Plus, if the new data provider has less items than the one it's replacing, the
existing repeated components that are beyond the number of the new components,
try to load an image that there is no data for, resulting in a browser error.
This happens weather recycleChildren is true or false. I made a bare bones
test, and it did the same thing, so I'm guessing this is normal behavior.
So, what should I be doing differently so that the setters don't fire twice?
Here's the repeater code:
mx:Repeater id=myRepeater repeatStart={trace('repeatStart')}
local:myBox myText={XML(myRepeater.currentItem).text}/
/mx:Repeater
Here's the custom component:
?xml version=1.0 encoding=utf-8?
mx:Canvas xmlns:mx=http://www.adobe.com/2006/mxml; width=100 height=100
mx:Script
![CDATA[
[Bindable]
private var _myText:String;
public function set myText(val:String):void
{
trace(setter called)
_myText = val;
}
]]
/mx:Script
mx:Box backgroundColor=0xFF
mx:Label text={_myText}/
/mx:Box
/mx:Canvas
[flexcoders] Re: XMLListCollection DataGrid Performance vs Any Other DataProvider Type
This code will convert for you...
You need to replace the xmllist.myxmldata with your own xml structure names.
private function convertXmlToArrayCollection( myxml:String
):ArrayCollection
{
var xml:XMLDocument = new XMLDocument( myxml );
var decoder:SimpleXMLDecoder = new
SimpleXMLDecoder();
var data:Object = decoder.decodeXML( xml );
var array:Array =
ArrayUtil.toArray(data.xmllist.myxmldata);
return new ArrayCollection( array );
}
A quick follow-up after I made this tweak to use objects vs xml.
In my case, performance increased by about 20% when scrolling on a 24 monitor
browser full-size by reducing the number of renderers from 10 to 3. I then
pre-translated the original xml data in the conversion so that I didn't need to
do it with a label function.
Performance is now acceptable in full-screen (24) mode.
Bottom-line, avoid renderers. Label functions are better but are still taxing
on the performance if there is a bunch of computing going on in those
functions. Pre-render data when converting from xml to objects.
--- In flexcoders@yahoogroups.com, Alex Harui aha...@... wrote:
I don't know of any links off-hand. I would simply create a class with the
set of properties you are interested in, then take the XML and parse it into
instances of that class.
You can try to get XMLDecoder to do it, but sometimes it is more efficient
just to write your own converter.
On 4/29/10 7:50 PM, Angelo Anolin angelo_ano...@... wrote:
Any link to show us some samples?
My data is coming from a .NET backend and most of it are in XML format and
parsed into XMLListCollection.
Would appreciate some more info on this.
THanks.
From: Alex Harui aha...@...
To: flexcoders@yahoogroups.com flexcoders@yahoogroups.com
Sent: Wed, 28 April, 2010 21:49:52
Subject: Re: [flexcoders] XMLListCollection DataGrid Performance vs Any Other
DataProvider Type
Convert the XML to Class instances.
On 4/28/10 10:06 AM, jamesfin james.alan.finnigan @gmail.com wrote:
Here's the scenario...
Simple datagrid with XMLListCollection data provider.
Average collection size is 200 rows of XML (shown below)
10 columns in the datagrid with a unique item renderer for each. 1 Column
can display 1 of 10 embedded images depending on an xml attribute.
AS3-only Renderers are highly optimized.
Average visible rows = 30 (simultaneously visible rows / meaning at least 300
renderers being recycled when scrolling?
Typical XML row data
foodata fooid=4997 fooid2=0 fooid3=2909 foot=9 startdate=2010-04-09
13:45:00 enddate=2010-04-09 14:45:00 foost=1 fooname=New Foobar
foosub=More Foobardata fooloc=false fooonly=false
/foodata
When all said and done being loaded, vertical scrolling is noticeably slow on
a new iMac (Safari or Firefox with latest FlashPlayer) compared to a stripped
down non-XML data provider version which scrolls quickly.
Googling consensus shows that XMLListCollection is not the optimal
dataprovider in this scenario and that XML in general is not the best choice
if it can be avoided.
Can anybody shed any light on a better way to improve scrolling performance
based upon this scenario?
Thanks in advance.
--
Alex Harui
Flex SDK Team
Adobe System, Inc.
http://blogs.adobe.com/aharui
[flexcoders] Re: Binding and square brackets
--- In flexcoders@yahoogroups.com, Richard Rodseth rrods...@... wrote:
I'm interested in getting rid of Data binding will not be able to
detect changes when using square bracket operator without introducing
an ArrayCollection.
The view displays data for the seven days of the week. Not using a
repeater (though one could).
I invite opinions on the relative merits (performance/elegance) of the
following:
A) Split the data in the presentation model when the combined data comes in
c:DailyView day=Monday data={model.mondayData}
c:DailyView day=Tuesday data={model.tuesdayData}
Obviously only an option because there are only seven days.
B) Use a function in the view
private function dailyData(combinedDailyData:Array, dayIndex:int) {
return model.combinedData[day]; // could also use a dictionary
}
c:DailyView day=Monday data={this.dailyData(model.stuff, 0)}/
C) A bindable non-getter in the presentation model
c:DailyView day=Monday data={model.dataForDay(0)}/
In the model:
[Bindable(event=combinedDataChanged)]
public function dataForDay(day:int):Array {
return combinedData[day];
}
Obviously the setter for combinedData dispatches combinedDataChanged.
I actually wasn't aware, or had forgotten, that C) is possible on a
non-getter function until I tried it just now. I actually like this
option because it encapsulates the storage used (array, dictionary,
whatever). I think I just answered my own question.
Had you considered just using getItemAt() on your ArrayCollection?
RE: [flexcoders] Re: Thoughts on Flash by Steve Jobs
Mike, Adobe get cracking - are you kidding me They've just released a slew of new products in the last two months; they're nearly done on FP 10.1, Air 2.0, and forged an important alliance with Google. What more do you want them to do before you can say they've gotten cracking? Jeff -Original Message- From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of mitek17 Sent: Friday, April 30, 2010 12:33 AM To: flexcoders@yahoogroups.com Subject: [flexcoders] Re: Thoughts on Flash by Steve Jobs --- In flexcoders@yahoogroups.com, Seth Caldwell w...@... wrote: Steve is employing several tactics used by politicians. The iphone is not open. iPhone is a device, not a technology. Technology should be open, device software could be proprietary. Steve stresses it particularly, please read Job's message more throroughly. I hope that the pressure from Jobs will finally make Adobe get cracking. Hey, what's with Linux support? What is happening with exception handling? are we there yet? No? Adobe, are you still busy with FX prefix? How many more years it will take to implement the feature which should appear first in any development platform. It took us YEARS (sic!) for voting, whinging and asking to fix the bugs and provide basic features. Printing support? Forget it, the company which invented PDF Postscript is too busy with something else. Adobe, please wake up and make your call, otherwise it will be too late. PS By waking up I don't mean submitting another pile of letters to FTC :) -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Alternative FAQ location: https://share.acrobat.com/adc/document.do?docid=942dbdc8-e469-446f-b4cf-1e62079f6847 Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.comYahoo! Groups Links
[flexcoders] Re: Thoughts on Flash by Steve Jobs
--- In flexcoders@yahoogroups.com, mitek17 mite...@... wrote: --- In flexcoders@yahoogroups.com, Seth Caldwell wiz@ wrote: Steve is employing several tactics used by politicians. The iphone is not open. iPhone is a device, not a technology. Technology should be open, device software could be proprietary. Steve stresses it particularly, please read Job's message more throroughly. I hope that the pressure from Jobs will finally make Adobe get cracking. Get cracking at what? Steve Jobs is on record as saying that no matter what Adobe does with the player, the iPhone and iTampon won't support it. -Amy
[flexcoders] Re: setters on my repeated custom component fire twice
I forgot to say that I'm using Flex Builder 3.
[flexcoders] Re: Thoughts on Flash by Steve Jobs
The talk about openness is completely disingenuous. Flash/Flex/ActionScript is vastly more open than any of the relevant Apple technologies. Moreover, what Jobs really wants is for Quicktime to be the video technology of choice. I believe Apple will eventually have to cave to market pressure on this one. Unfortunately, the delay is a pain in the neck for everyone. -pd
Re: [flexcoders] Re: Binding and square brackets
without introducing an ArrayCollection
The data is an array and always changes atomically. Wrapping it in an
ArrayCollection is certainly one option.
On Fri, Apr 30, 2010 at 8:15 AM, Amy amyblankens...@bellsouth.net wrote:
--- In flexcoders@yahoogroups.com flexcoders%40yahoogroups.com, Richard
Rodseth rrods...@... wrote:
I'm interested in getting rid of Data binding will not be able to
detect changes when using square bracket operator without introducing
an ArrayCollection.
The view displays data for the seven days of the week. Not using a
repeater (though one could).
I invite opinions on the relative merits (performance/elegance) of the
following:
A) Split the data in the presentation model when the combined data comes
in
c:DailyView day=Monday data={model.mondayData}
c:DailyView day=Tuesday data={model.tuesdayData}
Obviously only an option because there are only seven days.
B) Use a function in the view
private function dailyData(combinedDailyData:Array, dayIndex:int) {
return model.combinedData[day]; // could also use a dictionary
}
c:DailyView day=Monday data={this.dailyData(model.stuff, 0)}/
C) A bindable non-getter in the presentation model
c:DailyView day=Monday data={model.dataForDay(0)}/
In the model:
[Bindable(event=combinedDataChanged)]
public function dataForDay(day:int):Array {
return combinedData[day];
}
Obviously the setter for combinedData dispatches combinedDataChanged.
I actually wasn't aware, or had forgotten, that C) is possible on a
non-getter function until I tried it just now. I actually like this
option because it encapsulates the storage used (array, dictionary,
whatever). I think I just answered my own question.
Had you considered just using getItemAt() on your ArrayCollection?
Re: [flexcoders] Re: Thoughts on Flash by Steve Jobs
There are no printing improvements in Flex 4. AIR 2.0 supposedly has some new APIs you can use instead of our print code and it might have landed in 10.1 but I haven’t verified. GEH is doc’d here: http://help.adobe.com/en_US/FlashPlatform//reference/actionscript/3/flash/events/UncaughtErrorEvents.html. However, it still may not do what you think it will. GEH is not being given a high priority since the release players don’t display exception dialogs. If you have a specific bug with our transform code (assuming you are using our APIs to alter the transform), file a bug or start a new thread or post a link to an old thread. I didn’t do the transform code so I can’t answer. On 4/30/10 12:36 AM, mitek17 mite...@gmail.com wrote: https://bugs.adobe.com/jira/browse/FP-444 Created: 06/21/07 03:43 PM Is it already available? 10.1 is still pre-release beta with no API available for GEH. Almost 3 years...And counting. Printing improvements in Flex 4? Well, we have to trasnform 300 000 lines of code into Flex 4 first to check it. Does it finally do a second pass on validNextPage()? Alex, a question for you. Does anyone at Flex SDK Team know what's happening with matrix transform and properties of Flex containers? Flash itself respects transform method and updates all properties correctly. Is there any reason why the Flex containers are not updating their own properies after transform? PS I am a strong Flex/Flash platform supporter and we are working on a huge project written in Flex 3 and I want to see Flex/Flash alive. But with the current state of developers support and overall approach to the platform I would say that Adobe is not going to make it. Cheers, Dmitri. --- In flexcoders@yahoogroups.com mailto:flexcoders%40yahoogroups.com , Alex Harui aha...@... wrote: Global exception handling is in FP 10.1 and AIR 2.0. There should be better printing APIs in AIR 2.0 as well. These new features are not leveraged in the Flex framework because they were not committed until too late in our schedule for Flex 4.0, but they were committed before Jobs starting posting about Flash. On 4/29/10 9:33 PM, mitek17 mite...@... wrote: --- In flexcoders@yahoogroups.com mailto:flexcoders%40yahoogroups.com mailto:flexcoders%40yahoogroups.com , Seth Caldwell wiz@ wrote: Steve is employing several tactics used by politicians. The iphone is not open. iPhone is a device, not a technology. Technology should be open, device software could be proprietary. Steve stresses it particularly, please read Job's message more throroughly. I hope that the pressure from Jobs will finally make Adobe get cracking. Hey, what's with Linux support? What is happening with exception handling? are we there yet? No? Adobe, are you still busy with FX prefix? How many more years it will take to implement the feature which should appear first in any development platform. It took us YEARS (sic!) for voting, whinging and asking to fix the bugs and provide basic features. Printing support? Forget it, the company which invented PDF Postscript is too busy with something else. Adobe, please wake up and make your call, otherwise it will be too late. PS By waking up I don't mean submitting another pile of letters to FTC :) -- Alex Harui Flex SDK Team Adobe System, Inc. http://blogs.adobe.com/aharui -- Alex Harui Flex SDK Team Adobe System, Inc. http://blogs.adobe.com/aharui
Re: [flexcoders] RobotLegs Framework
I can testify, robotlegs is pretty good coming from 2yrs+ of doing Cairngorm. A lot less boiler plate code that's for sure. Dependency Injection for mock objects makes it great for the devs on my team to develop views when the service layer is not quite ready yet. Give the best practices a good read through and it should be a happy experience. On Thu, Apr 29, 2010 at 6:12 PM, Patricia Han flex...@yahoo.com wrote: Thanks a lot, John! Currently we're using Cairngorm, but we are thinking to move to Robotlegs in the next product. My concern on the Robotlegs is that not many people are using the new framework. So there won't be too many examples, talks, workarounds, etc. Thanks again. Pat. -- *From:* John McCormack j...@easypeasy.co.uk *To:* flexcoders@yahoogroups.com *Sent:* Thu, April 29, 2010 1:37:37 AM *Subject:* Re: [flexcoders] RobotLegs Framework Have a look at John Lindquist's video - 3rd one down: http://pv3d. org/ http://pv3d.org/ John Patricia Han wrote: Hi Everyone, Have you used Robotlegs framework? Please share your experience with me. (compare with Cairngorm or PureMVC) Thanks, Pat
[flexcoders] How to do the majic of scrolling?
I want the contents of the main Application to scroll Vertically so I can have an extra long web site. I added a scroller to the content area of an Application Skin and I see the application...but despite putting 3 containers that exceed the height of my laptop, the scroller is grayed out. Any examples on how to do this, seemingly, simple thing? Scroller that is wrapped around all the groups in a spark.component.Application skin: s:Scroller id=siteScroller horizontalScrollPolicy=off verticalScrollPolicy=on width=100% height=100%.. I have it wrapped around the group of groups.
Re: [flexcoders] Re: Thoughts on Flash by Steve Jobs
I get it, Steve, no Flash on iWhatever...now just shut up.. My job and life will move right along. Wasn't he supposed to be dead by now or something...or did he replace his cancer with a iBodyPart...what a douche. On 4/30/2010 11:50 AM, PFD Studio wrote: The talk about openness is completely disingenuous. Flash/Flex/ActionScript is vastly more open than any of the relevant Apple technologies. Moreover, what Jobs really wants is for Quicktime to be the video technology of choice. I believe Apple will eventually have to cave to market pressure on this one. Unfortunately, the delay is a pain in the neck for everyone. -pd
Re: [flexcoders] How to do the majic of scrolling?
Try setting minHeight=”0” on the scroller On 4/30/10 12:14 PM, Wally Kolcz wko...@isavepets.com wrote: I want the contents of the main Application to scroll Vertically so I can have an extra long web site. I added a scroller to the content area of an Application Skin and I see the application...but despite putting 3 containers that exceed the height of my laptop, the scroller is grayed out. Any examples on how to do this, seemingly, simple thing? Scroller that is wrapped around all the groups in a spark.component.Application skin: s:Scroller id=siteScroller horizontalScrollPolicy=off verticalScrollPolicy=on width=100% height=100%.. I have it wrapped around the group of groups. -- Alex Harui Flex SDK Team Adobe System, Inc. http://blogs.adobe.com/aharui
[flexcoders] Flashbuilder hang loading workbench
Not a good way to end the week. FlashBuilder hangs loading the workbench. Spinning beach ball, must Force Quit. Is there some cache I can delete to get up and running again? I saw a similar post on the flex forums from a few days ago, but no one has responded.
Re: [flexcoders] Re: Thoughts on Flash by Steve Jobs
Oh dude, come on, that's low. Either agree or disagree with what he says (I agree with most of it - HTML5 et al can replace the need for a lot of what Flash often does, and it's support is growing and standards are good for all of us) but don't make it personal. Guy On 01/05/2010, at 5:17 AM, Wally Kolcz wrote: I get it, Steve, no Flash on iWhatever...now just shut up.. My job and life will move right along. Wasn't he supposed to be dead by now or something...or did he replace his cancer with a iBodyPart...what a douche. On 4/30/2010 11:50 AM, PFD Studio wrote: The talk about openness is completely disingenuous. Flash/Flex/ActionScript is vastly more open than any of the relevant Apple technologies. Moreover, what Jobs really wants is for Quicktime to be the video technology of choice. I believe Apple will eventually have to cave to market pressure on this one. Unfortunately, the delay is a pain in the neck for everyone. -pd
Re: [flexcoders] Thoughts on Flash by Steve Jobs
On 30/04/2010, at 6:22 PM, Tom Chiverton wrote: On Thursday 29 Apr 2010 21:08:42 you wrote: Hi, I want to share this (http://www.apple.com/hotnews/thoughts-on-flash/) with the people who hasn't read it before and maybe read your comments on this topic. /me puts down his smart phone with a full Flash player with great performanceJobs isn't saying that Flash could never work on a smartphone, he's just saying he doesn't want it on Apple's smartphones, for the reasons he's listed. That article is so wrong, in so many places, but the corrections will never get the same exposure. Good tactic, unfortunately.I'm interested to know where you think he is factually wrong.Guy
Re: [flexcoders] Re: Thoughts on Flash by Steve Jobs
On 01/05/2010, at 1:50 AM, PFD Studio wrote: The talk about openness is completely disingenuous. Flash/Flex/ActionScript is vastly more open than any of the relevant Apple technologies. How do you figure that HTML5 is less open than Flash? Moreover, what Jobs really wants is for Quicktime to be the video technology of choice. And Adobe wants everyone to use Flash...but at least Apple is driving adoption of bona-fide standards. Flash is not an open standard. I believe Apple will eventually have to cave to market pressure on this one. Unfortunately, the delay is a pain in the neck for everyone. It's an interesting battle. I'd have to say Jobs is running a pretty ballsy line on it. At this stage it doesn't seem to be doing Apple any harm at all and it's certainly helping to raise the profile of HTML5 and the benefits of standards in general, which I think is a good thing. Guy -pd
Re: [flexcoders] Thoughts on Flash by Steve Jobs
On 30/04/2010, at 12:10 PM, Oleg Sivokon wrote: I've got this same link from my friend, and it's funny how it serves the facts... well, flash was in fact the first to use h.264 codec for video on the web (could be that some other existed before, but the HTML5 wasn't the first, that's for sure), Quicktime 7 had H.264 support, so if you used that to view video content you'd have been able to see h.264 video as early as April 2005of course video on the web prior to html5 pretty much relied on Flash to make it work nicely, so of course Flash supporting h.264 in 2007 was arguably a bigger deal to all intents and purposes. and it does use hardware rendering to display that on Windows. It is true it uses pure CPU rendering on Macs and both sides blame it on poor cooperation of the other side. Which kinda makes Steve's point, that a cross-platform runtime will never maximise the performance of individual platforms unless there is a commercial incentive to do so. I think, maybe one valid point that he makes is that Adobe didn't invest to much into mobile market until very recently... and, to be honest, flash rendering may be more optimized... like using platform available graphics tools - be it DirectX or OpenGL. It is also true that flash is kind of stuck in it's development... well, the language hadn't seen any significant change in years... But I don't think that what Apple cares about is how flash performs... not is it at all familiar with the situation around the product... For example I have Adobe tools to develop for flash on my Windows installation, but on Linux I have only non-Adobe tools, which is more by accident, but, anyway, this kind of contradicts what he says about non openess of the platform. Yes, but that's not the point he's making. He's saying they see Flash crashing macs more often than any other technology. They think it's insecure and inefficient and doesn't run well on their platform and they see an open alternative that they believe both performs better and makes better commercial sense for them, so that's what they are choosing to use. I also think that the main profit from banning other popular development tools like .NET and Java from Macs Apple may hope for good revenues from selling their development tools... Their development tools are free, go get them - http://developer.apple.com/technologies/xcode.html. So, interesting idea, but wrong. Think about that due to iProducts popularity the popularity of Obj-C grew a lot. It was a marginal language in terms of penetration until iPhone... So, they may hope to build a community of developers, who would develop in this language and thus became dependent on Apple's tools and the entire ecosystem... well, just like there's a lot of C# programmers in the world, not because it's the best language ever, but because of the demand. Yes, of course, I'm sure they do hope the success of the iPhone, iPad and the Mac in general will help drive developers to their platforms. What is your point? I think that Mac world sees the surrounding world from the entrenchment level, it's like after all those years! they are going to win one marketing war. They won't think about that their victory may turn into much larger loss on a general scale. Like, what good will come out of promoting obsolete technologies like HTML and JavaScript? LOL. Obsolete? Please. If you think that you are totally misguided. And that's after it's been proven many times that the disadvantages are inherent to the technology and it is probably seeing it's last years... Well, for me going back to making web apps in HTML and JavaScript would be like dark ages comparing to any technology, not necessarily Flash, that offers compiled language and better integration with the native API... No, Flash is not going to ever dominate in the way you imagine. Ever. It will see a decline over time as people adopt HTML5, and competing products such as Silverlight. I think it will continue to be the most-used plug-in for some time, but I think the need for it will wane over time. Think about it. What is Flash MOSTLY used for today? Video players and simple animations? Both of those can and will soon be done in HTML 5. RIAs will continue to be done in Flash/Flex/Silverlight for years to come, but the ubiquity of Flash as a runtime will wane as the need most users have for it today evaporates over the next few years. There may be to many marketing factors involved, of which I have little knowledge... and this may sound out of place... but, what would be if Abobe have cooperated with projects like HaXe and GNash? Or, offer to download the SWFTools' AS3 compiler along with Flex / Flash Builder? Or, at least bring their existence to the public attention somehow. What would that achieve? People who want those things today know where to get them. Adobe, rightly, has no interest in
Re: [flexcoders] Re: Thoughts on Flash by Steve Jobs
mitek17 This is just a thought regarding matrix transformation applied to visual components in flex framework. Firstly, you cannot make it bindable, but not so fast... I find i perfect! Trying to animate flex components and make it smooth is a pain, especially because of binding and all the extra architecture added on top of DisplayObject properties. So, maybe even if you don't find it convenient, there may be a different point of view on this matter. Speaking in more general sense, there are bugs, of course, and especially painful are those of sound and timeline... But, the worst thing is that flash isn't progressing for real in last years. Flex framework is just a project built using the available tools - I don't think there is a point in asking flex people to do more or improve stuff... how flash behaves is in general above their responsibility... However, we have a bad example right next to us, which is Java... it totally looks like it is on it's way to became history - no improvements to the language in years, no new releases... I think that if Adobe won't work in direction of making more dramatic changes to the language and how the runtime works we may find ourselves one day obsoleted... That's precisely why I mentioned other technologies targeting flash platform, and I believe that if Adobe cooperated with them better we might hope for a different future :) Guy Morton. I've said that before, he is not wrong, he's just serving the facts in a way that will most likely give you a wrong impression. He never says that h.264 codec is proprietary, but after reading what he says you may think it is. It may also create a wrong impression, when he says that flash had recently learned to play those videos using h/w rendering. The technology was released about 6 years ago, but if you compare that to dinosaurs, than it may in fact sound like very recently :) Well, if you know the context, then it doesn't look that bad, but the less savvy people will understand it very differently. Oh, one more thing regarding the openness of the platform. On my Linux installation I have HaXe and SWFTools compilers, GNash player (I have Adobe's player too, but I'm testing against both players) and I do the coding in AXDT and VIM with AS language coloring - none of these tools has anything to do with Adobe, and all of them are OSS of different kinds. So, his statement about flash being proprietary is not correct, however, you may put many different meanings in that word, so, it may happen that some of those meanings would not be false... He also doesn't mention that what and how Apple had implemented in HTML5 is not a standard, because HTML5 isn't a standard. It is about to became standard in 2 years from now. You may call that pushing technology forward, but, then you would have to agree to call ActiveX a standard and a technology break-through... Is that called baked facts in proper English? :)
Re: [flexcoders] Thoughts on Flash by Steve Jobs
On 30/04/2010, at 7:50 AM, Seth Caldwell wrote: Steve is employing several tactics used by politicians. The iphone is not “open”. Their app store is a money making machine and they guard it fiercely. If their web browser was able to deliver flash content, there would be no need to deliver apps as you could just have a set of bookmarks of flash apps. If that was the reason why not allow Flash apps to be created using Adobe's iPhone packager? Everyone's got a conspiracy theory, but I don't see too many people actually thinking through and rationally evaluating the arguments that Jobs has made. Conspiracy theories are easier and more fun I guess. How much money have they made off silly little animated games selling for $1.99 that were developed YEARS ago in flash that had to be redeveloped for their platform? And they have control over approving what apps are allowed. So? How much money have Flash developers made from making silly little games that were developed YEARS ago in C or assembler that had to be redeveloped in Actionscript? He says that apple gave adobe some support to make a flash player for the mac… if that is the case perhaps those engineers purposely made it buggy on their platform so people wouldn’t want to use flash? It’s no coincidence that they are driving the “html 5” standard to fit within their own codebase, which gives their developers a lead since they are the ones writing the code that interprets/renders that content and others will have to do the slower reverse-engineering which puts their platforms behind in the race. Every inch counts. Rubbish. Every major modern browser is implementing HTML 5. HTML 5 support is well under way in Opera and Mozilla, and Google Chrome (the best browser for Windows) uses the WebKit engine. The only holdout on standards adoption has been Microsoft and even they are now getting on board. Personally, I’m switching from my iphone to nexus… html 5 does not have anywhere near the level of development tools that flash does… when my phone can run an air app I will be a very happy camper indeed. I would bet all the money in my bank account that we will have flash on a phone this year, so just hold tight. Sure, but so what? You'll have html 5 on that phone too, probably. I don't think that proves anything. Don’t drink Steve’s koolaid guys… he’s declared war and the tactics he’s using, the insults he’s throwing about adobe not being “open” and so on… they are just plain immature. The standard of argument against his posting that I've seen on this list is MUCH lower. Not being open is not an insult, and it's a fact. I think you should carefully re-read his arguments so you understand them. It's not koolaid, it's a pina-colada, and he's making it plain you can take it or leave it. When the iphone first came out I loved it. I put an apple sticker on my motorcycle helmet after having been a PC guy my entire life. But now.. now I’m tearing that sticker off. I am shamed to represent this man. And you think Steve Jobs is being immature...? Guy
Re: [flexcoders] Re: Thoughts on Flash by Steve Jobs
On 01/05/2010, at 11:37 AM, Oleg Sivokon wrote: Guy Morton. I've said that before, he is not wrong, he's just serving the facts in a way that will most likely give you a wrong impression. He never says that h.264 codec is proprietary, but after reading what he says you may think it is. I disagree with your reading of his post. He says nothing to indicate that h.264 is even SLIGHTLY proprietary. It may also create a wrong impression, when he says that flash had recently learned to play those videos using h/w rendering. The technology was released about 6 years ago, but if you compare that to dinosaurs, than it may in fact sound like very recently :) Well, if you know the context, then it doesn't look that bad, but the less savvy people will understand it very differently. He is pretty clearly speaking from the point of view of Flash's support of Apple's platforms. Oh, one more thing regarding the openness of the platform. On my Linux installation I have HaXe and SWFTools compilers, GNash player (I have Adobe's player too, but I'm testing against both players) and I do the coding in AXDT and VIM with AS language coloring - none of these tools has anything to do with Adobe, and all of them are OSS of different kinds. So, his statement about flash being proprietary is not correct, however, you may put many different meanings in that word, so, it may happen that some of those meanings would not be false... No, they're not. Flash is a proprietary *technology*. Only Adobe can say where it's heading, and how. There are open-source *tools* for making it, that's all. He also doesn't mention that what and how Apple had implemented in HTML5 is not a standard, because HTML5 isn't a standard. It is about to became standard in 2 years from now. You may call that pushing technology forward, but, then you would have to agree to call ActiveX a standard and a technology break-through... Is that called baked facts in proper English? :) If you've been around long enough to know how these things work you will see that they usually get a groundswell of support for elements of the proposal being built into browsers and used long before the w3c completes it's work. However, knowing what is proposed for the standard certainly helps to get all browsers aligned in terms of behaviour and capabilities, and the groundswell of support for various things is usually pretty obvious and reflects the demand for those features from developers and users. ActiveX was always a bad idea as it could never be ported to platforms other than Windows. The web is about interoperability, something it took MS a long time to figure out. Guy
[flexcoders] MS - The future of the web is HTML 5
http://www.engadget.com/2010/04/30/microsoft-weighs-in-the-future-of-the-web-is-html5/ and http://blogs.msdn.com/ie/archive/2010/04/29/html5-video.aspx So, I wonder if the Steve/Apple bashing will now move on to MS-bashing? I'm guessing not... Reposted here for posterity, from http://www.engadget.com/2010/04/30/microsoft-weighs-in-the-future-of-the-web-is-html5/: Where Steve Jobs leads, Microsoft follows -- how's that for shaking up the hornet's nest? It's said in jest, of course, but we've just come across a post from the General Manager for Internet Explorer, Dean Hachamovitch, and the perspective expressed by him on the subject of web content delivery broadly agrees with the essay penned by Jobs yesterday on the very same subject. Echoing the Apple CEO's words, Hachamovitch describes HTML5 as the future of the web, praising it for allowing content to be played without the need for plug-ins and with native hardware acceleration (in both Windows 7 and Mac OS X). He goes on to identify H.264 as the best video codec for the job -- so much so that it'll be the only one supported in IE9's HTML5 implementation -- before turning to the dreaded subject of Flash. This is where it gets good, because he literally repeats one of Jobs' six pillars of Flash hate: reliability, security, and performance are not as good as Microsoft would like them. Where Hachamovitch diverges from Apple's messiah, however, is in describing Flash as an important part of a good consumer experience on today's web, primarily because it's difficult for the typical consumer to access Flash-free content. Still, it's got to be depressing for Adobe's crew when the best thing either of the two biggest players in tech has to say about your wares is that they're ubiquitous. Wonder how Shantanu Narayen is gonna try and spin this one. P.S. : it's notable that in multiple paragraphs of discussing the future, Microsoft's IE general fails to once mention the fabled Silverlight, itself a rich media browser plug-in. Given Silverlight's featured role in the Windows Phone 7 infrastructure and other things like Netflix, we doubt it's on the outs, but there are sure to be some sour faces greeting Hachamovitch this morning. And from http://blogs.msdn.com/ie/archive/2010/04/29/html5-video.aspx There’s been a lot of posting about video and video formats on the web recently. This is a good opportunity to talk about Microsoft’s point of view. The future of the web is HTML5. Microsoft is deeply engaged in the HTML5 process with the W3C. HTML5 will be very important in advancing rich, interactive web applications and site design. The HTML5 specification describes video support without specifying a particular video format. We think H.264 is an excellent format. In its HTML5 support, IE9 will support playback of H.264 video only. H.264 is an industry standard, with broad and strong hardware support. Because of this standardization, you can easily take what you record on a typical consumer video camera, put it on the web, and have it play in a web browser on any operating system or device with H.264 support (e.g. a PC with Windows 7). Recently, we publicly showed IE9 playing H.264-encoded video from YouTube. You can read about the benefits of hardware acceleration here, or see an example of the benefits at the 26:35 mark here. For all these reasons, we’re focusing our HTML5 video support on H.264. Other codecs often come up in these discussions. The distinction between the availability of source code and the ownership of the intellectual property in that available source code is critical. Today, intellectual property rights for H.264 are broadly available through a well-defined program managed by MPEG LA. The rights to other codecs are often less clear, as has been described in the press. Of course, developers can rely on the H.264 codec and hardware acceleration support of the underlying operating system, like Windows 7, without paying any additional royalty. Today, video on the web is predominantly Flash-based. While video may be available in other formats, the ease of accessing video using just a browser on a particular website without using Flash is a challenge for typical consumers. Flash does have some issues, particularly around reliability, security, and performance. We work closely with engineers at Adobe, sharing information about the issues we know of in ongoing technical discussions. Despite these issues, Flash remains an important part of delivering a good consumer experience on today’s web. Dean Hachamovitch General Manager, Internet Explorer -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Alternative FAQ location: https://share.acrobat.com/adc/document.do?docid=942dbdc8-e469-446f-b4cf-1e62079f6847 Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.comYahoo! Groups Links *
Re: [flexcoders] MS - The future of the web is HTML 5
On Sat, May 1, 2010 at 12:13 PM, Guy Morton g...@alchemy.com.au wrote: http://www.engadget.com/2010/04/30/microsoft-weighs-in-the-future-of-the-web-is-html5/ and http://blogs.msdn.com/ie/archive/2010/04/29/html5-video.aspx So, I wonder if the Steve/Apple bashing will now move on to MS-bashing? I'm guessing not... I think it's a pain that Apple won't allow Flash on their devices and are blocking cross-compiling. I personally like Flex because it seems to be the best way to make cross-platform RIA apps these days - it's a whole lot faster and easier than using a JS framework. I'd really like to see the platform continue to improve and flourish. With that said, Adobe needs to lift their game in some areas. Not picking on Flex or Flash here, but Adobe has really become the new Microsoft when it comes to security problems. PDF exploits, as an example, have been in the news a lot this year. Apple and Microsoft both make patching/updating the OS and various critical components a pretty smooth experience. Adobe? I'm technical and fail more often than not. The most reliable thing to do is to download the full installer for the product (if you can find the right version) and install from scratch. Not good.
Re: [flexcoders] Thoughts on Flash by Steve Jobs
Guy Morton Oh, I haven't seen your previous reply. Sorry. AS3 and h.246 codec support were available in 2005... just so you know. Also, there's a free version of Visual Studio (which I like and use a lot, and the same way you can say that MS development tools are free), however, this wasn't my point - Apple profits from selling their OS / software - the more developers see it profitable to develop against their API, the more it will pay back to Apple because it will escalate like this: you need software - you need the OS to run it, you get the OS, you find out there's more software you want and so on. This is good for Apple, but is bad for me personally - I don't like their technology (I'm a long time Mac user, but long time ago - I've used to work on G3-G4 computers). What their success will mean for me is that I would rather have to adapt to the language that I don't like, or I will have less job opportunities in the language I do like. For my manager that would mean that if the company wants to support multiple platforms they would need to hire more personal, buy more software (btw, since when Mac OS became a freeware?). Apple doesn't care about that (not that others care a lot, but that's not the point). Why do I think that HTML and JavaScript are dead for *web application *(if your mail doesn't support HTML formating, web application is in strong/strong). This is because it is: - compiled in browser (nothing you can do with it, the JavaScript not compiled in browser is ActionScript, well, at least the version implemented by Mozilla). - inefficient rendering model. It is not because of the implementation, it is engraved in the design, HTML / SVG are bad for describing graphics, HTML is for text. Using HTML to make graphic content is similar to making typography in MSWord, or book illustration in Excell ( http://www.youtube.com/watch?v=4YG_WWZYqUs ) I find it awesome btw :) - Absolutely no tools for basic optimizations, everything in the language is reflection - zillions of loops where you could use references or pointers... JavaScript performs many orders of magnitude worse than native code, and it is not only because of how it is implemented, it is the feature of the language, it can never work even close to what your computer may do. The side effects, which are not inherent to the technology, but also associated with it are these: most of the JavaScript code I've seen so far is a very low grade code, be it JQuery, Prototype and so on - it's lame... :) It looks even worse then other mature now languages looked like back in 90-s... 90% of all HTML pages found on the web don't validate in the free validators provided by Mozilla and W3C. They are bad software! All current browsers except FireFox are running JavaScript 1.5 (or somewhat compatible JScript 5.5) version - do you know when this standard was established? It is even funny to think about those tools as real programming tools. It is only because of the browsers war that this technology still survives, it should've been dead decades ago and take it's proper place next to Turbo Basic in the computer science museum :) The high demand and no alternative is what is keeping it alive. The technology is crap, it's amazing how one can be so blind to not see that. I am not a Flash fan, actually, I'm waiting for NaCl to get strength. My greatest ambition was to design an on-line video editor. It didn't quite work in Flash, but, if I think about JavaScript... oh well... :) What I mean is - web applications should be applications, JavaScript is a tool to script an application, but it's not a tool for writing one. Or, just to give you another example - World of Warcraft :) It is a web application if you want! It connects to the internet and it uses the same computer, that your browser does! Would you think of making that in HTML5 and JavaScript? Why do you think it's ridiculous? It's not, it's basically the same technology! :) And that's where internet is heading to - applications, not pages. Regarding what you say about those tools: well, you see, most developers are unaware of them. It may never appear to the AS3 people how much they are missing when they don't have generics, templates, inlining and so on. While, I think that, this is mutually dependent - if you have smarter developer in your community, it is more likely to make better products - better products will make joining the community more attractive for others - you will get better developers on your side. As a side effect, the community members may contribute to the development of the technology as a whole. Sorry for the flame, and if I made you tired reading this. I really hope you or anyone reading this doesn't take this as a personal offence. After all it's a metal box and the small lights flushing inside of it :) PS. In my previous post there was a mistake: He never says that h.264 codec is proprietary, but after reading what he says you may think it is. Should read: He never says
Re: [flexcoders] Thoughts on Flash by Steve Jobs
I think you are blurring the boundaries between networked applications and web applications. Web applications run in a web browser and ideally use web standards to make their content 100% interoperable on different devices and platforms. That's a foundational idea of the web, after all. Networked applications can be written for any device or platform you want to support, and can use whatever protocol they like to communicate over the network. Flash/AIR will continue to be a good way to develop applications that can run on multiple platforms and devices but the fact that they are delivered through a web browser has always been a bit of a hack, insofar as Flash provided functionality that web browsers lacked and so was used to add missing features but that it also deviated from what the web is supposed to be about. They really are more like networked applications that happen to be wrapped in html, than web applications. I see this debate as a healthy one about re-establishing what the web needs to be able to do, and the benefits of standards. I also think it's worth re-evaluating the tools we use and the outcomes we want and how best to get there. There are many web apps out there today that use modern web technologies to do things that you used to need Flash for. That's a good thing as it leads to better interoperable on different devices and platforms. That doesn't mean there isn't a place for different technologies, like Flash, to deliver other types of applications on specific platforms or devices, but we should certainly start to reevaluate whether Flash really == Web Applications. Guy On 01/05/2010, at 12:38 PM, Oleg Sivokon wrote: Guy Morton Oh, I haven't seen your previous reply. Sorry. AS3 and h.246 codec support were available in 2005... just so you know. Also, there's a free version of Visual Studio (which I like and use a lot, and the same way you can say that MS development tools are free), however, this wasn't my point - Apple profits from selling their OS / software - the more developers see it profitable to develop against their API, the more it will pay back to Apple because it will escalate like this: you need software - you need the OS to run it, you get the OS, you find out there's more software you want and so on. This is good for Apple, but is bad for me personally - I don't like their technology (I'm a long time Mac user, but long time ago - I've used to work on G3-G4 computers). What their success will mean for me is that I would rather have to adapt to the language that I don't like, or I will have less job opportunities in the language I do like. For my manager that would mean that if the company wants to support multiple platforms they would need to hire more personal, buy more software (btw, since when Mac OS became a freeware?). Apple doesn't care about that (not that others care a lot, but that's not the point). Why do I think that HTML and JavaScript are dead for web application (if your mail doesn't support HTML formating, web application is in strong/strong). This is because it is: - compiled in browser (nothing you can do with it, the JavaScript not compiled in browser is ActionScript, well, at least the version implemented by Mozilla). - inefficient rendering model. It is not because of the implementation, it is engraved in the design, HTML / SVG are bad for describing graphics, HTML is for text. Using HTML to make graphic content is similar to making typography in MSWord, or book illustration in Excell ( http://www.youtube.com/watch?v=4YG_WWZYqUs ) I find it awesome btw :) - Absolutely no tools for basic optimizations, everything in the language is reflection - zillions of loops where you could use references or pointers... JavaScript performs many orders of magnitude worse than native code, and it is not only because of how it is implemented, it is the feature of the language, it can never work even close to what your computer may do. The side effects, which are not inherent to the technology, but also associated with it are these: most of the JavaScript code I've seen so far is a very low grade code, be it JQuery, Prototype and so on - it's lame... :) It looks even worse then other mature now languages looked like back in 90-s... 90% of all HTML pages found on the web don't validate in the free validators provided by Mozilla and W3C. They are bad software! All current browsers except FireFox are running JavaScript 1.5 (or somewhat compatible JScript 5.5) version - do you know when this standard was established? It is even funny to think about those tools as real programming tools. It is only because of the browsers war that this technology still survives, it should've been dead decades ago and take it's proper place next to Turbo Basic in the computer science museum :) The high demand and no alternative is what is keeping it alive. The technology is
[flexcoders] Re: Thoughts on Flash by Steve Jobs
--- In flexcoders@yahoogroups.com, Guy Morton g...@... wrote: Oh dude, come on, that's low. Either agree or disagree with what he says (I agree with most of it - HTML5 et al can replace the need for a lot of what Flash often does, and it's support is growing and standards are good for all of us) but don't make it personal. It may be low, but there's a certain amount of logic to it, considering when Steve Jobs was out, he was given a liver transplant. In ancient times, the liver was considered to be the seat of anger. MPO is that there's been a lot of angry behavior coming out of Apple lately, and not just aimed at Adobe.
Re: [flexcoders] Re: Thoughts on Flash by Steve Jobs
Just my 2 cents. The way I see it, I'd rather focus on creating better, bigger and greater applications with Adobe/Flex which my users/customers will love rather than sulk in a corner because some guy is imposing his stupidity on what I can provide. From: Amy amyblankens...@bellsouth.net To: flexcoders@yahoogroups.com Sent: Fri, 30 April, 2010 20:54:20 Subject: [flexcoders] Re: Thoughts on Flash by Steve Jobs --- In flexcod...@yahoogro ups.com, Guy Morton g...@... wrote: Oh dude, come on, that's low. Either agree or disagree with what he says (I agree with most of it - HTML5 et al can replace the need for a lot of what Flash often does, and it's support is growing and standards are good for all of us) but don't make it personal. It may be low, but there's a certain amount of logic to it, considering when Steve Jobs was out, he was given a liver transplant. In ancient times, the liver was considered to be the seat of anger. MPO is that there's been a lot of angry behavior coming out of Apple lately, and not just aimed at Adobe.
Re: [flexcoders] Re: XMLListCollection DataGrid Performance vs Any Other DataProvider Type
I know a bit of converting my XML data into array collection which I can use as
DP for my data-based controls.
I want to get some good examples on what Alex posted to convert the
xmllistcollection to class instances.
I was just thinking cause, xmllistcollection can be definitely bound as a
dataprovider to a flex control but if I am going to convert the
xmllistcollection to a class instance and use that class as dataprovider for
the control, then the overhead may be too much to actually ponder on?
From: jamesfin james.alan.finni...@gmail.com
To: flexcoders@yahoogroups.com
Sent: Fri, 30 April, 2010 7:46:57
Subject: [flexcoders] Re: XMLListCollection DataGrid Performance vs Any Other
DataProvider Type
This code will convert for you...
You need to replace the xmllist.myxmldata with your own xml structure names.
private function convertXmlToArrayCo llection( myxml:String ):ArrayCollection
{
var xml:XMLDocument = new XMLDocument( myxml );
var decoder:SimpleXMLDe coder = new SimpleXMLDecoder( );
var data:Object = decoder.decodeXML( xml );
var array:Array = ArrayUtil.toArray( data.xmllist. myxmldata) ;
return new ArrayCollection( array );
}
A quick follow-up after I made this tweak to use objects vs xml.
In my case, performance increased by about 20% when scrolling on a 24 monitor
browser full-size by reducing the number of renderers from 10 to 3. I then
pre-translated the original xml data in the conversion so that I didn't need to
do it with a label function.
Performance is now acceptable in full-screen (24) mode.
Bottom-line, avoid renderers. Label functions are better but are still taxing
on the performance if there is a bunch of computing going on in those
functions. Pre-render data when converting from xml to objects.
--- In flexcod...@yahoogro ups.com, Alex Harui aha...@... wrote:
I don't know of any links off-hand. I would simply create a class with the
set of properties you are interested in, then take the XML and parse it into
instances of that class.
You can try to get XMLDecoder to do it, but sometimes it is more efficient
just to write your own converter.
On 4/29/10 7:50 PM, Angelo Anolin angelo_anolin@ ... wrote:
Any link to show us some samples?
My data is coming from a .NET backend and most of it are in XML format and
parsed into XMLListCollection.
Would appreciate some more info on this.
THanks.
_ _ __
From: Alex Harui aha...@...
To: flexcod...@yahoogro ups.com flexcod...@yahoogro ups.com
Sent: Wed, 28 April, 2010 21:49:52
Subject: Re: [flexcoders] XMLListCollection DataGrid Performance vs Any Other
DataProvider Type
Convert the XML to Class instances.
On 4/28/10 10:06 AM, jamesfin james.alan. finnigan @gmail.com wrote:
Here's the scenario...
Simple datagrid with XMLListCollection data provider.
Average collection size is 200 rows of XML (shown below)
10 columns in the datagrid with a unique item renderer for each. 1 Column
can display 1 of 10 embedded images depending on an xml attribute.
AS3-only Renderers are highly optimized.
Average visible rows = 30 (simultaneously visible rows / meaning at least 300
renderers being recycled when scrolling?
Typical XML row data
foodata fooid=4997 fooid2=0 fooid3=2909 foot=9 startdate=2010-
04-09 13:45:00 enddate=2010- 04-09 14:45:00 foost=1 fooname=New Foobar
foosub=More Foobardata fooloc=false fooonly=false
/foodata
When all said and done being loaded, vertical scrolling is noticeably slow on
a new iMac (Safari or Firefox with latest FlashPlayer) compared to a stripped
down non-XML data provider version which scrolls quickly.
Googling consensus shows that XMLListCollection is not the optimal
dataprovider in this scenario and that XML in general is not the best choice
if it can be avoided.
Can anybody shed any light on a better way to improve scrolling performance
based upon this scenario?
Thanks in advance.
--
Alex Harui
Flex SDK Team
Adobe System, Inc.
http://blogs. adobe.com/ aharui
