Actionscript 3 :: Flex - Selection In Flex Datagrid Does Not Pass The ValueObject To SelectionChangeHandler Function
Aug 11, 2011
I have a TabNavigator, and each tab is a Module. One of the modules is labelled Units and the full code of the module is posted in this post. There are several problems:
1) Forms are not populated with data from the datagrid selection.
2) Selecting a row and clicking delete gives the very-common error: TypeError: Error #1009: Cannot access a property or method of a null object reference.
A trace on the valueObject unit within the selectionChangeHandler function gives NULL. Why? Note: In other modules (other tabs of the TabNavigator), I have DropDownLists populated with units. This means that the valueObject Unit is defined in the other modules. However, valueObjects should be private to modules, and not shared.
My datagrid is filled with data from an Oracle database. The datagrid refreshes after 1 min. After that, I lose the selected item. I want to avoid that. Consider that it's quite possible that there is new data after refresh, so the selected index may no longer appear in the datagrid after a refresh.
I have a dataGrid in Flex to which data is added dynamically using dataGrid1.dataProvider=myArrayCollection;The DataGrid is non-editable and defined in mxml as [code]The data in myArrayCollection definitely does not contain duplicates.I am not able to select any row except the last.This occurs when I overlay the AIR 3 SDK on my copy of Flex
Back again with another Flex question. I have an XML structure like...
[Code]...
Now I got his displaying on my grid by saying dataProvider=XMLListCollection... What I want to do is on selection of a row, check if it has "Address" tag, if it has display the other grid, else hide the grid.
I have a datagrid with 5 columns. The first column has checkboxs and rest four columns have data from the dataProvider.
I have two relating issues: First: I want the row to get selected when I click on a checkbox, or if i click on multiple checkboxes, every row should stay selected in the datagrid for whose checkbox is selected.
Second: If a row or multiple rows are selected, the corresponding checkbox should get selected too.
I have a question I came up with 3 days ago about how to do the blue underlining of a datagrid row programmatically. I thought to have found the solution, with just adding the column and row Indexes to the datagrids editedItemPosition Property.It turned out, that this is just practical if you want to be able to edit the grids row right away. But what if I just want to underline it with the blue color?Additionally how to detect that a list based Item got this kind of selection? es there a event to detect that? whats the name of this kind of selection?
I have a DataGrid and I set the DataProvider to my data. When my data changes the DataGrid loses the selected row and the scroll bar jumps back to the top. How do I maintain the selection and scroll position?
I'm working on my first ever AIR application with flashbuilder - just so you know. I've bound a mx:DataGrid component to a DataProvider which is a mx:HTTPService fetching an xml file with items. To keep the data up to data I'm polling the webservice on a given interval.
My problem is that I loose the currently selected item in my DataGrid when the data is updated. I've tried to save the DataGrid.selectedIndex and set when the data is updated, but I'm not sure when to do it?! The closest I've come is to restore the index when the updateComplete event of DataGrid is fired. This works, but the selection first fades away and then fades in - not updated soon enough. So what is the best way to keep the selection? (only one selected item at a time) And as a side question: is there a convenient way to only update the data when it has actually changed?
I have a datagrid.In this datagrid I have a combobox item editor. This datagrid also has multiple columns where a user inputs numbers in each column. These numbers are then calculated by formula where the sum is posted in the "total" column. In this combobox there are two options for the user to choose from and each option has a different formula for calculating the inputted numbers. What I want is for when a user chooses "option 1" one formula is used to do the calculation, when "option 2" is chosen by the user then formula two is used to the calculation.Here's an example:
Combobox Option 1 (formula 1) is chosen by user = (Column2 - Column1) x column3 = "total" column Combobox Option 2 (formula 2) is chosen by user = (Column1 - Column2) x column3 ="total" column
I realize you would use a conditional such as "if else" statement, but im just not sure how to do it. I've been trying to implement this for a while with no success.
i have an array list of data which i am showing in spark data grid. once i select an idem and click on a button that i have linked with datagrid it adds a panel on screen. I want to disable this selection i-e to tell that this item panel have already been added. Any ideas how can i do that?
I have a datagrid which is editable and I need to send that back to the database via a CFC for insertion into the database after all the editing is complete. Dumping the array collection to cfdump tells me that I have an array with items and a structure but i cannot understand how to "loop" through each and insert into the DB.There seems to be very little written which actually works! My MXML and CFC are below but give me the error of "You have attempted to dereference a scalar variable of type class coldfusion.runtime.Array as a structure with members." -which is nice
[Bindable] private var getconsent:ArrayCollection = new ArrayCollection([ {LocationName:'Service A', Contact: 'Bob Jones' },
I have a custom skin applied to a Flex 4 spark datagrid. One really annoying issue I am having is finding the ability to override or change the selected row border color. I was able to set the selectionColor just fine but the border is still the default light blue color. I need it to be yellow.
Anyone know where I can find this style or override this border that is being set when selection happens within the skin itself.
I have a DataGrid, and what I would like to do, is when a user clicks on a row to select it, check a certain condition, and if it's met prevent the row from getting selected and keep the old selection intact.
I have used the index of a value object to map to a screen object so that new items added index as -1, -2, -3, -4, -5 etc. Now that I am ready to add these new objects to the database I want to clear their index value so that I can run a createService on them.
It wont allow me to delete object.property and setting it to 0 or trying to set it to null will not allow the object to be created in the database.
What other method can I use for clearing the property?
I have two datagrids which should do everything synchronic except the data entry. I already managed to make them scroll synchronic by using the scroll event. My question is now how to select a item of a datagrid only programmatically, and how to get the mouseover effect and underlining the corresponding row with a bright blue color?
I have a spark datagrid on a mobile application, I set the
interactionMode="touch"
and the dataGrid scrolling is good, I got some problems adding a selectionChange eventListener to it, because scrolling the dataGrid will automatically change the selection and instead simply scrolling it, the function binded will start...
How can I add the touch dalay before select the index, so if I scroll the grid the selection won't change, and it change only if I press the item without scrolling?
I need to display DropDownLists in a column of a DataGrid in my Flex application. Here is what I am doing:
First, I have a item renderer function that creates a custom item renderer, and passes it a property that is an IList that will be used as the dataProvider of the dropDownList:
private function rendererFunction(item:Object):ClassFactory { var itemRenderer:ClassFactory = new ClassFactory(AudActionDropDownIR); itemRenderer.properties = {AudActionData: AudActionData};
[Code]....
First, how can I call the init function when the renderer is created? Second, when I set the column's itemRendererFunction="rendererFunction", the app will not launch, a white screen comes up. But when I set itemRenderer="components.AudActionDropDownIR", the app will launch, but of course there is no data in the dropdown list.
I have a mxml component with a datagrid listing project names and code versions. I have the selected projects from the datagrid binded to a public variable named "selectedProjects". But how to access this variable in another mxml component. I want the selected project's name in that component's text area. I even created an instance of the first component and using that called the selectedProjects variable. But I do not get the value updated in the text area.
This is the code for the first component where I get the selected projects name in a variable:
In as3, I am adding event listener and then attaching the anonymous function to it:[code]Now this whole piece of code is looped n times. Now, I have n myBoxes and whenever I roll my mouse over the box, it should alert the name. But, what I see is that the last value of count is used by each box. How can I pass parameter or value to the anonymous function? ( as roll over , I believe, expects only one variable)
Is it possible to call the function by using the datagrid column item?I want to call the function while the user click the particular column item in the datagrid?
i have a datagrid which contained several items,when i click one row, a panel will show,however, if i have already selected one row and then click some blank place, this panel will also show because there is already a selecteditem,which will be a problem. Then i change this click event to change event, however, there will be another problem, which is if i click the same row, nothing will happend. so is there any better idea when i click a row, a panel shows and when i click the blank place, nothing happened.
Like we have rendererAdd function/hook for a Spark List which is dispatched when an itemrenderer is added to the container? Do we have any similar method/hook at DataGrid level also?
I'm making multiple similar calls with similar results to one remote object. Because these calls are so similar and very changeable, I've been keeping the name of the remote method in a config file, and when I need to make the call I use getOperation() on the remote object, and call send() on the operation object. However, the requirements have changed so that not all of the calls will have the same number of parameters. Because send uses ..., will I be able to continue using the same formation and pass an array, or will send() treat that as passing one argument of type array?
I am working with flex's datagrid. I have a DataGridColumn defined as the following, where labelFunction would allow me to display a custom text. I am also using a itemEditEnd handler on the grid to manipulate the entered data for this column. The purpose is to take the user input and split it then store the result in different properties other than "fixedValue". My problem with this approach is that I can't find a way to prevent assignment to the fixedValue property (which doesn't exist).
And using event.preventDefault() in the itemEditEnd handler would stop other events from happening like changing the row from edit mode to the view mode. My question is that if there is other way to achieve the same thing, or a way to just prevent the assignment of the "dataField" data. I am using the dataField to identify the column I am editing. Leaving it null might not be an option.