A list with 3 columns. First column for show/hide, second for the model name and the third for lock/unlock that will only appear when the item is clicked.
How do you create something like this using QTableWidget and QStyledItemDelegate? I have been looking at the documentations and some questions and I still find it hard to understand.
Related
I am trying to use doStartEdit(inCell, inRowIndex) function of datagrid to open first cell of newly added row for editing in dojo 1.9 Enhanced grid, but the function does not work.
It says in api that the arguments should be:
inCell - object of a cell (I get it with getCell() function)
inRowIndex - index number of a row
I am not sure because arguments are not clearly described in the api, I tried to look at the same variable descriptions near other grid functions.
I tried other variations of arguments, like cell number insted of object, and row object instead of row index. None of them worked. Is it a bug? Or I just use it in wrong way?
If you are looking to do is focus and set a cell for editing by the user then below should work for you.. that will focus on column 1 row 1.
grid.edit.setEditCell(grid.getCell(0),0)
Fiddle:http://jsfiddle.net/Pjzef/
I have a grid with 10 columns, and another with over 60. I want to offer a view of these grids where any column or number of columns can be selected to remain visible. Then submit a request to hide all of the remaining 'UN-selected' grid columns, leaving the selected columns viewable.
End-users need to have a mechanism where they can choose which column(s) to view and the remaining columns will be hidden temporarily from view. I know that I can choose each column from the context menu to hide each column, but if I have a grid with multiple columns it can be quite difficult to select each column to hide. I would like to create a mechanism where users can select which columns they want to 'view' and allow the remaining columns to hide.
I believe that grid reconfigure may be the way to go, but there are no real examples showing how I might select the columns to allow viewable "on-the-fly", and then reconfigure the grid based on the new column model.
There are a couple of ways you could approach this:
One way would be to loop through the columns and call hide() method on those you wish to hide.
For a large number of columns it might be better to use reconfigure method. using reconfigure with the first paremeter undefined you get to reuse the store that was originally configured:
reconfigure( undefined, myColumns )
I am using QtableWidget for my GUI application.
In my GUI , I have to display a table widget which has Rows and Columns and for each row , column is further divided into two sub columns.
Can any body please tell me how to divide columns into subcolumn for Qtable Widget? (I need to divide horizontal header view also into sub columns).
From the question it is unclear what/how you want to subdivide, but in general Qt has no concept of a subcolumn.
You can however control the display and editing of individual items using an item delegate. So I suggest you experiment with that.
http://doc.qt.io/qt-5/qabstractitemview.html#setIndexWidget
http://doc.qt.io/qt-5/qabstractitemview.html#setItemDelegate
http://doc.qt.io/qt-5/qabstractitemview.html#setItemDelegateForColumn
http://doc.qt.io/qt-5/qabstractitemview.html#setItemDelegateForRow
I would like to edit a cell by the row and column indexes so essentially do the following:
advDataGrid[2][3] = "Dogs"
so that I am setting the data grid row 2 and column 3 to Dogs. I cannot for the life of me figure out how to do this!
Side note: I need this because I am trying to allow the user to copy a section of an excel file to a section of an AdvancedDataGrid like Google Docs does. I am using this idea to do it: http://mannu.livejournal.com/348299.html
Thanks! Any help will be greatly appreciated!
In general you want to operate on the dataProvider rather than the presentation (AdvancedDataGrid). So in your case, I would get the item associated with the specified row from your dataProvider and modify whichever element is specified to "Dogs". So something like this: adg.dataProvider[row].someColumnData = "Dogs"
EDIT: "someColumnData" refers to whatever property you have set for the column to display. So when you defined your AdvancedDataGrid's columns, you set the 4th column to use the "someColumnData" property of the items in your dataProvider, and you want to change the value in the 4th column, then you'd set it as described above. Hope that clarifies things.
Flex components are data driven, so you should modify the data provider of the grid.
What if you want to edit specific individual cells, eg I want to to keep running totals of some cells in other cells, IE: as a user edits I update whole columns.
Surely their must be a way to walk the array and get Column4.row6 = something.
How do you make a List control wrap around to a second column (or multiple columns)? Thanks, let me know if there is a solution for this with the List control or some other Flex control.
For example, if you have one list with 42 items in it, but I want to cap the height of a list to 20 items; then instead of having one list with 42 items all the way down, I would have that list of items look like the equivalent of 3 adjacent lists: the first with 20 items, the second with 20 items, and the third with 2 items (which represent the original list of 42 items).
This question seems similar but it is in ColdFusion:
Wrapping lists into columns
Using a TileList and changing the direction variable is the best solution I have come up with.
You could use a Repeater and a simple Label based itemRenderer for the list items and avoid using a list completely. If you wrap it all up inside a custom control you can provide the same API as List so your consumers will never tell the difference.
I think you're looking for a second row, as others have noted. Either setting the wordWrap to true or using a different item renderer are the best way to get it done, but using a custom item renderer will give you more control over how the object is displayed.
I suggest creating a custom Component that wraps a variable number of Lists. This custom component can have a property named "maxListHeight". It can also have a "dataProvider" property. This custom component will produce a set of horizontally aligned lists. The number of lists produced by the custom component will be: floor(dataProvider.length/maxListHeight)+1. Where all but the last list produced will have a listHeight of maxListHeight; the last list produced will have a listHeight of: dataProvider.length % maxListHeight.
This should work but managing the addition and removal of items to the masterList should require some extra work (if it is not appended/removed from the back). This would also require instantiating multiple lists instead of just one.
The default itemRenderer for a List control is TextInput that supports only single line text. Use TextArea instead.
<mx:List itemRenderer="mx.controls.TextArea"/>
Try setting the following two properties on List:
wordWrap=true
variableRowHeight=true