B4J Library [B4X] [XUI] SD FlexGrid (Table)

I created a new library to show a table (or grid) similar to the one in EXCEL.

There are already excellent classes that allow many to accomplish things, such as xCustomListView by @Erel (B4X) and with the FlexibleTable by @klaus (B4A). I wanted to make something slightly different suited to my needs.

WARNING
The use of libraries for personal and / or commercial use is permitted. It is not allowed to modify the sources or change the name of the library. Reverse engineering is not authorized to access the sources for any reason, not even for study or learning reasons.

Explanations:
  1. To get the calculation of the cells that contain a formula I have added Erel's B4XEval to my Library, but as soon as possible I will make it external so that everyone can modify it according to their needs.
  2. To select multiple cells, position yourself on the first cell of those to be selected (the one at the top left) click a shot and then click again and drag your finger to cover all the cells (or area) that you want to select
  3. It is still in beta version, presents problems in large grids.
  4. Now only for B4A and B4i Now for B4A,B4i,B4j
  5. In the example to select a group of cells just long click on a cell (not checkbox). In the case of B4J click with the right mouse button

SD_FlexGrid

Author:
Star-Dust
Version: 0.32
  • Eval
    version 2.00
    Eval Method By Erel: https://www.b4x.com/android/forum/threads/b4x-eval-expressions-evaluator.54629/
    • Fields:
      • Error As Boolean
    • Functions:
      • Calculate (Expression As String) As Double
      • Class_Globals As String
      • Initialize (FG As FlexGrid) As String
      • IsInitialized As Boolean
        Verifica se l'oggetto sia stato inizializzato.
  • FlexGrid
    • Events:
      • CellClick (Row As Int, Col As Int)
      • CellLongClick (Row As Int, Col As Int)
      • HeadClick (Index As Int)
      • Modified (Row As Int, Col As Int)
      • ScrollX (Position As Double)
      • ScrollY (Position As Double)
    • Fields:
      • TypeButton As Int
      • TypeCheck As Int
      • TypeDouble As Int
      • TypeFloat As Int
      • TypeImage As Int
      • TypeInt As Int
      • TypeList As Int
      • TypeString As Int
    • Functions:
      • AddRow (Cell As Object(), Refresh As Boolean) As String
        eg. Flexgrid.AddRow(Array As Object(i,B,"User ","Description " ,100.00), True)
      • AddRow2 (Cell As Object(), HeightRow As Int, Refresh As Boolean) As String
        eg. Flexgrid.AddRow(Array As Object(i,B,"User ","Description " ,100.00),40dip,True)
      • AddRowAt (index As Int, Cell As Object(), Refresh As Boolean) As String
        eg. Flexgrid.AddRow(2,Array As Object(i,B,"User ","Description " ,100.00), True)
      • AddRowCustomize (Cell As Object(), Text_Color As Int, Background_Color As Int, TextFont As B4XFont, Refresh As Boolean) As String
      • AddToParent (Parent As B4XView, Left As Int, Top As Int, Width As Int, Height As Int, ColsNumber As Int) As String
        Parent is Panel to Add Grid
        eg. Flexgrid.AddToParent(Activity,0,0,100%x,100%y,5)
      • Class_Globals As String
      • ClearRows As String
        erase all rows contents
      • ClearSelection As String
        cell no longer be selected.
      • DesignerCreateView (Base As Object, Lbl As Label, Props As Map) As String
        Base type must be Object
      • EditCell (Row As Int, Col As Int) As String
        eg. Flexgrid.EditCell(1,1)
      • EditCellOnSite (Row As Int, Col As Int) As String
        eg. Flexgrid.EditCell(1,1)
      • GetCellBackgroundColor (Row As Int, Col As Int) As Int
      • GetCellCol (Col As Int) As Object()
        eg. Dim S() as String = Flexgrid.GetCellCol(1)
        eg. Dim B() as Boolean = Flexgrid.GetCellCol(2)
      • GetCellRow (Row As Int) As Object()
        eg Dim Row() as Object = Flexgrid.GetCellRow(1)
      • GetCellTextColor (Row As Int, Col As Int) As Int
      • GetCellTextFont (Row As Int, Col As Int) As B4XFont
      • GetCellValue (Row As Int, Col As Int) As Object
        eg. Dim I as int = Flexgrid.GetCellValue(1,1)
        eg. Dim S as String = FlexGrid.GetCellValue(2,2)
      • GetTypeCol (Col As Int) As Int
        eg. If Flexgrid.GetTypeCol(1)=Flexgrid.TypeInt Then .....
      • Initialize (Callback As Object, EventName As String) As String
      • Invalidate As String
      • IsInitialized As Boolean
        Verifica se l'oggetto sia stato inizializzato.
      • RemoveRow (Row As Int) As String
        Row (0...n-1)
        eg. Flexgrid.RemoveRow(1)
      • ResetCustomizeCell (Col As Int, Row As Int) As String
        eg. Flexgrid.ResetCustomizeCell(1,1)
      • SearchInColumn (Text As String, Col As Int, FromRow As Int, exactly As Boolean, IgnoreCap As Boolean) As Int
        Search for text in the indicated column starting from the start row.
        If the start row is 0 it will check the entire column.
        It will return the position of the line containing the text
        <code>Dim Col As Int = 5
        Dim Row As Int = FlexGied1.SearchInColumn("My text",Col,0, False, True)
        if Row>-1 then Log("Find in row " & Row) Else log("Don't find")
        </code>
      • SearchInColumn2 (Text As String, Col As Int, FromRow As Int, exactly As Boolean, IgnoreCap As Boolean) As List
      • SelectCell (Row As Int, Col As Int, Mobile As Boolean) As String
        eg. Flexgrid.SelectCell(1,1,True)
        If Mobile is True, the selectable area can be enlarged by touching and dragging it to the desired box.
      • SelectCells (FromRow As Int, FromCol As Int, ToRow As Int, ToCol As Int, Mobile As Boolean) As String
        eg. Flexgrid.SelectCell(1,1,5,4,True)
        If Mobile is True, the selectable area can be enlarged by touching and dragging it to the desired box.
      • SelectCol (Col As Int) As String
        eg. Flexgrid.SelectCol(1)
      • SelectRow (Row As Int) As String
        eg. Flexgrid.SelectRow(1)
      • SetCellCustomize (Row As Int, Col As Int, Text_Color As Int, Background_Color As Int, TextFont As B4XFont) As String
        eg. Flexgrid.SetCellCustomize(1,1,XUI.Color_Black,XUI.Color_White,XUi.CreateDefaultFont(12))
      • SetCellListIndex (Row As Int, Col As Int, Index As Int) As String
      • SetCellValue (Row As Int, Col As Int, Value As Object) As String
        eg. Flexgrid.SetCellValue(1,1,True)
        eg. Flexgrid.SetCellValue(2,2,"OK")
        eg. Flexgrid.SetCellValue(3,3,3)
        eg. Flexgrid.SetCellValue(Row,Col,"A,B,C,D,E") for TypeList
      • SetColAlignment (ColumnIndex As Int, Alignment As String) As String
        Index (0..n-1)
        eg. SetColAlignment(0,"CENTER")
      • SetColCustomize (Col As Int, Text_Color As Int, Background_Color As Int, TextFont As B4XFont) As String
        eg. Flexgrid.SetColCistomize(1,XUI.Color_Black,XUI.Color_White,XUi.CreateDefaultFont(12))
      • SetColName (ColumnIndex As Int, Name As String) As String
        Index (0..n-1)
        eg. Flexgrid.SetColName(1,"Help")
      • SetColsNumber (ColumnNumber As Int) As String
        Reset Grid and Change Cols Number
      • SetColType (ColumnIndex As Int, Typ As Int) As String
        Index (0..n-1)
        eg. SetColType(0,FlexGrid.TypeInt)
      • SetColWidth (ColumnIndex As Int, Width As Int) As String
        Index (0..n-1)
        eg. SetColWidth(0,100dip)
      • SetDataRow (Row As Int, Cell As Object()) As String
        eg. Flexgrid.SetRow(Row,Array As Object(i,B,"User ","Description " ,100.00))
      • SetDataRow2 (Row As Int, Cell As Object(), HeightRow As Int) As String
        eg. Flexgrid.SetRow2(Row,Array As Object(i,B,"User ","Description " ,100.00),40dip)
      • setHeaderAlignment(ColumnIndex As Int, Alignment As String) As String
        eg. setHeaderAlignment(0,"CENTER")
      • SetHeadHeight (Height As Int) As String
        Set Header Height
      • SetRowCustomize (Row As Int, Text_Color As Int, Background_Color As Int, TextFont As B4XFont) As String
        eg. Flexgrid.SetRowCustomize(1,XUI.Color_Black,XUI.Color_White,XUi.CreateDefaultFont(12))
      • SetRowHeight (IndexRow As Int, Height As Int) As String
        IndexRow (0..Size-1)
        eg. setRowHeight(0,60dip)
      • SetRowsHeight (Height As Int) As String
        Set all Rows Height
      • SortForCol (Column As Int) As String
    • Properties:
      • Base As B4XView [read only]
      • ColCount As Int [read only]
      • ColorSelectedArea As Int [write only]
      • ColorSelectingArea As Int [write only]
      • ColsAlignment
        eg. setColsAlignment(Array As String ("LEFT","CENTER","CENTER","RIGHT"))
      • ColsName As String()
        eg. Flexgrid.ColName=array As String ("First","Second")
      • ColsType
        eg. ColsType=Array As Int(FlexGrid1.TypeInt,FlexGrid1.TypeCheck,FlexGrid1.TypeString,FlexGrid1.TypeString,FlexGrid1.TypeFloat)
      • ColsWidth
        eg. SetColsWìdth(Array As Int (100dip,50dip,100dip,100dip))
      • Font
        eg. Flexgrid.Font=xui.CreateDefaultFont(12)
      • HeaderFont
        eg. Flexgrid.HeaderFont=xui.CreateDefaultFont(12)
      • RowCount As Int [read only]
        Dim Size as int = Flexgrid.RowCount
      • ScrollToRow
        eg. Flexgrid.ScroolToRow=50
      • ScrollX As Double
      • ScrollY As Double
      • SelectedColumnEnd As Int [read only]
        return -1 if not selected
      • SelectedColumnStart As Int [read only]
        return -1 if not selected
      • SelectedRowEnd As Int [read only]
        return -1 if not selected
      • SelectedRowStart As Int [read only]
        return -1 if not selected


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List/Spinner
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For more details: https://www.b4x.com/android/forum/threads/xui-flexgrid.98686/

Significative release logs:
  • 0.12
    • Add method SelectCells (FromRow As Int, FromCol As Int, ToRow As Int, ToCol As Int, Mobile As Boolean)
    • Modify method SelectCell (Row As Int, Col As Int, Mobile As Boolean)
  • 0.15: Added HeaderFont
  • 0.16: Added SetColsNumber method.
  • 0.19 (Sample)
    • Add method AddRowCustomize (Cell As Object()
    • Add method SearchInColumn (Text As String, Col As Int, FromRow As Int, exactly As Boolean, IgnoreCap As Boolean) As Int
  • 0.21
    • Add TypeList. Allows you to add a ComboBox type box (Spinner in B4A and Picker in B4i) and select to a list
    • Added other examples to POST n. 2 To populate the grid from the database, search for a string in a column and to use TypeList in the grid
    • added SetCellListIndex method to change the position of the selected index
  • 0.25
    • Added SetHeadHeight method
      sets the height of the header
    • Added SetRowsHeight method
      sets the height of all lines
  • 0.27
    • added properties ScrollX and ScrollY
    • Added events ScrollX() and ScrollY()
  • 0.29: Fixed bugs in vertical scrolling
  • 0.31
    • Added SortForCol(Column As Int)
    • Added SetDataRow(Row As Int, Cell() As Object) and SetDataRow2(Row As Int, Cell() As Object, HeightRow As Int)
    • Added field ColorSelectedArea and ColorSelectingArea
    • Fix bug
  • 0.32
    • Added SearchInColumn2. Returns the list of search result lines
  • 0.33
    • Added setHeaderAlignment
 

Attachments

  • B4A Sample.zip
    31 KB · Views: 805
  • B4i Sample.zip
    24.2 KB · Views: 411
  • B4j Sample.zip
    23.9 KB · Views: 677
  • SD_FlexGrid 0.33.zip
    35.8 KB · Views: 83
  • jSD_FlexGrid 0.33.zip
    36.7 KB · Views: 67
  • iSD_FlexGrid 0.33.zip
    325.1 KB · Views: 47
Last edited:

calloatti

Member
Licensed User
I have replaced several B4XTables with FlexGrids. What a wonderful library. Thank you. May I suggest a few things that would be great to have at some point.

1. The selected row highlight color cannot be changed, it would be nice to be able to change it. For example in the first image the second row is selected. The second image is the result of handling setting highlighted rows using a helper class, but being able to change the highlight color would simplify things a lot.

Screenshot_20220911-125210.png
Screenshot_20220911-125246.png


2. There is no way to change the border color of the header, it seems the header text color is used. Again, the result can be seen in the previous images. Also it seems that the borders of the header are thicker that the borders of the rows?

3. There is no way to add left/right padding for the cell text. I implemented padding by adding spaces before/after the cell text in the helper class, considering the column alignment.

4. There is no way to set the alignment of the header cells text.

5. I could not find a way to set some grid colors programatically. Those can be set in the designer. It would be great to be able to change the colors programatically. Maybe a setcolors method?

6. A SetRow(row, Cell As Object()) method could be a nice addition, to easily update rows without having to update each row cell. The use case is when you have a cursor with unknown changes and it would be easier to just update each row instead of every cell of every row.

7. (very minor and low priority) Make ColsAlignment and SetColAlignment accept "L", "C", "R" in addition to "LEFT","CENTER","RIGHT"

Again, thank you for this class. The main reason I switched from B4XTable if the ability to scroll down.
 

bleber

New Member
Hi,
There are some method to search in list items when enter initial characters for an item.
Thanks.
 

Star-Dust

Expert
Licensed User
Currently you can search for exact text or text contained within the cell. (See exactly parameter)
But there is no search for a text starting with a specific string.

SearchInColumn (Text As String, Col As Int, FromRow As Int, exactly As Boolean, IgnoreCap As Boolean) As Int
 

pliroforikos

Active Member
Licensed User
Hello, i wonder if i can set the alligment of headers in B4i.

There is a function
  • setHeaderAlignment(ColumnIndex As Int, Alignment As String) As String
    eg. setHeaderAlignment(0,"CENTER")
but i don't know how to use it.
thank you
 

Star-Dust

Expert
Licensed User
Hello, i wonder if i can set the alligment of headers in B4i.

There is a function
  • setHeaderAlignment(ColumnIndex As Int, Alignment As String) As String
    eg. setHeaderAlignment(0,"CENTER")
but i don't know how to use it.
thank you
The first parameter is the column number to which you want to change the alignment (starts from zero) and the second parameter is a string which can be CENTER / LEFT / RIGHT
 
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