[flexcoders] Re: Getting selectedItems to properly *select*...
--- In flexcoders@yahoogroups.com, Alex Harui [EMAIL PROTECTED] wrote: Are you saying that myAC[0] was modified so that the sub AC was removed? I'd go find out what actually got changed. Actually no - I was simply reading the subAC, and when checking it a second time, the subAC was not actually removed, but all of its valueObjects were. i.e. length = 0 as seen in the gif. All of this said, after banging my head through this last night, I found that I was somehhow incorrectly assigning myGrid.selectedItems to the foundItems() function's returned Array (which loops and builds an array of found items). I definitely don't prefer to it this way, but in the end it was necessary, and its allowed me to move on past this! IMHO, should've been as easy as myGrid.selectedItems = myAC or some simple derivative. I would love to see a more thorough explanation of why this didn't work, and if you look at my gifs you can see my frustration! One of those few times where I feel like the debugger is just lying to me. Problem1: qnotemedia.com/wontwork.gif Problem2: qnotemedia.com/dissapearing.gif Thanks to all for your input. - Chris
RE: [flexcoders] Re: Getting selectedItems to properly *select*...
Too hard to tell from this far away. You'd have to produce a mini-example and file it as a bug at adobe.com/go/wish. -Alex From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of qnotemedia Sent: Thursday, March 15, 2007 5:21 AM To: flexcoders@yahoogroups.com Subject: [flexcoders] Re: Getting selectedItems to properly *select*... --- In flexcoders@yahoogroups.com mailto:flexcoders%40yahoogroups.com , Alex Harui [EMAIL PROTECTED] wrote: Are you saying that myAC[0] was modified so that the sub AC was removed? I'd go find out what actually got changed. Actually no - I was simply reading the subAC, and when checking it a second time, the subAC was not actually removed, but all of its valueObjects were. i.e. length = 0 as seen in the gif. All of this said, after banging my head through this last night, I found that I was somehhow incorrectly assigning myGrid.selectedItems to the foundItems() function's returned Array (which loops and builds an array of found items). I definitely don't prefer to it this way, but in the end it was necessary, and its allowed me to move on past this! IMHO, should've been as easy as myGrid.selectedItems = myAC or some simple derivative. I would love to see a more thorough explanation of why this didn't work, and if you look at my gifs you can see my frustration! One of those few times where I feel like the debugger is just lying to me. Problem1: qnotemedia.com/wontwork.gif Problem2: qnotemedia.com/dissapearing.gif Thanks to all for your input. - Chris
[flexcoders] Re: Getting selectedItems to properly *select*...
Got it! It appears that selectedItems is dependent on the data being *absolutely identical* to the dataProvider. And while I thought my data was identical, it really wasn't. In the debugger, if you look at a variable, its always: Array (@123456). What I found was that although the data was definitely the same, that number was not. To fix the problem, I centralized all data to go through one data manager, whereas before I was reinitializing a different data component in each component. So now, I'm basically calling parentApplication.dataManager.someFunction () from all of my components. This isn't good quite frankly, but by doing so, the @123456 is always the same. If anyone else can think of a better way, I'm all ears...
RE: [flexcoders] Re: Getting selectedItems to properly *select*...
If you set selectedItems, the array you set it to needs to contain actual object references to particular data items in the dataProvider. It can't simply contain objects with the same data. If you want to set the selection based on data, you'll have to loop through all the items, inspect whether each item has the data you want, and select it if so. - Gordon From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of qnotemedia Sent: Wednesday, March 14, 2007 9:48 AM To: flexcoders@yahoogroups.com Subject: [flexcoders] Re: Getting selectedItems to properly *select*... Got it! It appears that selectedItems is dependent on the data being *absolutely identical* to the dataProvider. And while I thought my data was identical, it really wasn't. In the debugger, if you look at a variable, its always: Array (@123456). What I found was that although the data was definitely the same, that number was not. To fix the problem, I centralized all data to go through one data manager, whereas before I was reinitializing a different data component in each component. So now, I'm basically calling parentApplication.dataManager.someFunction () from all of my components. This isn't good quite frankly, but by doing so, the @123456 is always the same. If anyone else can think of a better way, I'm all ears...
[flexcoders] Re: Getting selectedItems to properly *select*...
--- In flexcoders@yahoogroups.com, Gordon Smith [EMAIL PROTECTED] wrote: If you want to set the selection based on data, you'll have to loop through all the items, inspect whether each item has the data you want, and select it if so. I actually tried something like that. But myGrid.selectedItems += item doesn't work. What's the best practice way to push the item to selectedItems?
RE: [flexcoders] Re: Getting selectedItems to properly *select*...
Arrays in Flex and Flash are not watched for changes. After you mutate the array you have to set it again. var tmp:Array = myGrid.selectedItems tmp += item; myGrid.selectedItems = tmp; If you see something that takes an ArrayCollection then it is watched for changes. IOW, the grid did not know you added an item to its selectedItems array. From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of qnotemedia Sent: Wednesday, March 14, 2007 4:27 PM To: flexcoders@yahoogroups.com Subject: [flexcoders] Re: Getting selectedItems to properly *select*... --- In flexcoders@yahoogroups.com mailto:flexcoders%40yahoogroups.com , Gordon Smith [EMAIL PROTECTED] wrote: If you want to set the selection based on data, you'll have to loop through all the items, inspect whether each item has the data you want, and select it if so. I actually tried something like that. But myGrid.selectedItems += item doesn't work. What's the best practice way to push the item to selectedItems?
[flexcoders] Re: Getting selectedItems to properly *select*...
--- In flexcoders@yahoogroups.com, Alex Harui [EMAIL PROTECTED] wrote: Arrays in Flex and Flash are not watched for changes. After you mutate the array you have to set it again. var tmp:Array = myGrid.selectedItems tmp += item; myGrid.selectedItems = tmp; OK - I've retried specificaly what you've shown, and it still doesn't work. I assigned a findItems() function to a temporary array, arTemp. The function returns an Array of items found. The very next line is myGrid.selectedItems = arTemp. As mentioned in earlier posts, the items in this found array have precisely matched data to the dataProvider of the grid, and the selection still doesn't occur, without any errors either. The *only* difference between the two is the @123456 following the Array description in the debugger. At least I have something that works (three posts back), but now I'm running into a similar problem in another area of my app, and I'd like to move forward with this thread... I have another popup with two grids. Grid A has a multi-level ArrayCollection. i.e.: myAC[0].something myAC[0].somethingElse myAC[0].anotherAC[0].anotherSomething myAC[0].anotherAC[1].anotherSomethingElse myAC[1].something ...etc... When the user clicks on Grid A (not multi-select), Grid B's selectedItems is populated with the second-level AC anotherAC, like this: gridB.selectedItems = gridA.selectedItem.anotherAC.source And it works! BUT!!! When I select another item and come back to the first one, the anotherAC level has disappeared without a trace! It disappears from all bound ACs. WTF?! And BTW, I additionally tried the findItems() function as mentioned here. The same problem happens in that nothing is selected. Again, I've put together a gif to express my anxiety: qnotemedia.com/dissapearing.gif ...this is a before and after shot. On the left is before anything has been selected, and on the right, is immediately after a selection has occured. On the right side, notice that the dgAllRoles.selectedItems is correctly populated, but that both the dgSelectedNames dataProvider AND the original AC, selectedDevTeam have had thei second tiered item collectedRoles completely dissapear. Crossing my fingers that someone can understand this... - Chris
RE: [flexcoders] Re: Getting selectedItems to properly *select*...
Internally, we're doing an instance check, not a test of properties to see if they match. Unless you've handed the list an array of things that are the same instances as they are in the dataprovider it won't match. I can't get to the GIF for some reason. Are you saying that myAC[0] was modified so that the sub AC was removed? I'd go find out what actually got changed. -Alex From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of qnotemedia Sent: Wednesday, March 14, 2007 5:55 PM To: flexcoders@yahoogroups.com Subject: [flexcoders] Re: Getting selectedItems to properly *select*... --- In flexcoders@yahoogroups.com mailto:flexcoders%40yahoogroups.com , Alex Harui [EMAIL PROTECTED] wrote: Arrays in Flex and Flash are not watched for changes. After you mutate the array you have to set it again. var tmp:Array = myGrid.selectedItems tmp += item; myGrid.selectedItems = tmp; OK - I've retried specificaly what you've shown, and it still doesn't work. I assigned a findItems() function to a temporary array, arTemp. The function returns an Array of items found. The very next line is myGrid.selectedItems = arTemp. As mentioned in earlier posts, the items in this found array have precisely matched data to the dataProvider of the grid, and the selection still doesn't occur, without any errors either. The *only* difference between the two is the @123456 following the Array description in the debugger. At least I have something that works (three posts back), but now I'm running into a similar problem in another area of my app, and I'd like to move forward with this thread... I have another popup with two grids. Grid A has a multi-level ArrayCollection. i.e.: myAC[0].something myAC[0].somethingElse myAC[0].anotherAC[0].anotherSomething myAC[0].anotherAC[1].anotherSomethingElse myAC[1].something ...etc... When the user clicks on Grid A (not multi-select), Grid B's selectedItems is populated with the second-level AC anotherAC, like this: gridB.selectedItems = gridA.selectedItem.anotherAC.source And it works! BUT!!! When I select another item and come back to the first one, the anotherAC level has disappeared without a trace! It disappears from all bound ACs. WTF?! And BTW, I additionally tried the findItems() function as mentioned here. The same problem happens in that nothing is selected. Again, I've put together a gif to express my anxiety: qnotemedia.com/dissapearing.gif ...this is a before and after shot. On the left is before anything has been selected, and on the right, is immediately after a selection has occured. On the right side, notice that the dgAllRoles.selectedItems is correctly populated, but that both the dgSelectedNames dataProvider AND the original AC, selectedDevTeam have had thei second tiered item collectedRoles completely dissapear. Crossing my fingers that someone can understand this... - Chris
RE: [flexcoders] Re: Getting selectedItems to properly *select*...
I assume you meant tmp.push(item); instead of tmp += item; Array doesn't support a += operator as far as I know. - Gordon From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Alex Harui Sent: Wednesday, March 14, 2007 4:33 PM To: flexcoders@yahoogroups.com Subject: RE: [flexcoders] Re: Getting selectedItems to properly *select*... Arrays in Flex and Flash are not watched for changes. After you mutate the array you have to set it again. var tmp:Array = myGrid.selectedItems tmp += item; myGrid.selectedItems = tmp; If you see something that takes an ArrayCollection then it is watched for changes. IOW, the grid did not know you added an item to its selectedItems array. From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of qnotemedia Sent: Wednesday, March 14, 2007 4:27 PM To: flexcoders@yahoogroups.com Subject: [flexcoders] Re: Getting selectedItems to properly *select*... --- In flexcoders@yahoogroups.com mailto:flexcoders%40yahoogroups.com , Gordon Smith [EMAIL PROTECTED] wrote: If you want to set the selection based on data, you'll have to loop through all the items, inspect whether each item has the data you want, and select it if so. I actually tried something like that. But myGrid.selectedItems += item doesn't work. What's the best practice way to push the item to selectedItems?
[flexcoders] Re: Getting selectedItems to properly *select*...
To truly express my frustration, I've put together this shot of some code: qnotemedia.com / wontwork.gif ...note that in the above example, only arSecondSelection actually works. The others select nothing.
