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: 0.46

• 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)
    • FeetClick (Index As Int)
    • HeadClick (Index As Int)
    • Modified (Row As Int, Col As Int)
    • ScrollX (Position As Double)
    • ScrollY (Position As Double)
  • Fields:
    • EditBackgroundColor As Int
    • EditTextColor As Int
    • 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
      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 list of position of the line containing the text
      <code>Dim Col As Int = 5
      Dim IndexFinded As List = FlexGied1.SearchInColumn2("My text",Col,0, False, True)
      if IndexFinded.Size>0 then Log("Find in row " & Row) Else log("Don't find")
      </code>
    • 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)
    • SetFeetHeight (Height As Int) As String
      Set Header Height
    • setFootColValue (col As Int, Fv As String) As String
      eg. Flexgrid.FeetValue=array As String ("First","Second")
    • setHeaderAlignment (Col As Int, Alignment As String) As String
      eg. Flexgrid.HeaderAlignment="CENTER"
    • SetHeadHeight (Height As Int) As String
      Set Header Height
    • SetPadding (Left As Int, Top As Int, Right As Int, Bottom As Int) As String
      eg. FlexGrid1.SetPadding(10dip,0,10dip,0)
    • 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
    • SetSingleLine (SLine As Boolean) As String
      To set the cells to single or multiple lines
    • SortForCol (Column As Int) As String
  • Properties:
    • Base As B4XView [read only]
    • ColCount As Int [read only]
    • ColorSelectedArea
      Set the color of the selected area
    • ColorSelectingArea
      Set the color of the area during the selection phase
    • 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)
    • FootFont
      eg. Flexgrid.FeetFont=xui.CreateDefaultFont(12)
    • FootValue As String()
      eg. Flexgrid.FeetValue=array As String ("First","Second")
    • FootVisible
      eg. FG.FeetVisible=True
    • HeaderFont
      eg. Flexgrid.HeaderFont=xui.CreateDefaultFont(12)
    • HeaderVisible
      eg. FG.HeadVisible=True
    • Height As Int
    • RowCount As Int [read only]
      Dim Size as int = Flexgrid.RowCount
    • ScrollToCol
      eg. Flexgrid.ScroolToCol=50 (Col= 0..Size-1)
    • ScrollToRow
      eg. Flexgrid.ScroolToRow=50 (Row= 0..Size-1)
    • 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
    • Width As Int

List/Spinner

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
• 0.34
  • Added the ability to freeze the last row (foot row) as well as the header so you can enter column totals that always remain visible
  • Fix minor bugs
• 0.35
  • Added the ability to select from Design that text cells are single or multiline
• 0.36
  • Fix bugs: SortForCol; SetColsNumber
• 0.37
  • Added: EditTextColor and EditBackgroundColor fields to be able to select colors for the on-site editable cell. By default it is black background and white text
• 0.38
  • Fixed bug on CheckBox alignment
• 0.39
  • Singleline and multiline option of the design now also affects the column header and column foot
• 0.40
  • Added ScrollToCol (together with ScrollToRow it is possible to position in a specific cell)
• 0.41
  • Fix bug
• 0.42
  • Added Width and Height to change the size of the grid from code during execution
• 0.43
  • Fixed bug on SearchInColumn2
• 0.44
  • Added SetSingleLine - To set the cells to single or multiple lines
• 0.45
  • Added SetPadding
• 0.46
  • Fix bugs
• 0.47
  • Fix Bugs

 

[calloatti]

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.

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.

 

[calloatti]

Could you please check out my comments here: https://www.b4x.com/android/forum/threads/b4x-xui-sd-flexgrid-table.100897/post-905208

Thanks!

 

[Star-Dust]

Could you please check out my comments here: https://www.b4x.com/android/forum/threads/b4x-xui-sd-flexgrid-table.100897/post-905208

Thanks!

Hi,
Although I have not answered you, I have read your comments. Thank you I'll think about it

 

[bleber]

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

 

[Star-Dust]

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]

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]

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

 

[pliroforikos]

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

No i mean where is function?

 

[Star-Dust]

No i mean where is function?

View attachment 134704

You need to upgrade to version 0.33

 

[pliroforikos]

I am an idiot.
Thank you very much.

 

[Star-Dust]

Update 0.34

• Added the ability to freeze the last row (foot row) as well as the header so you can enter column totals that always remain visible.
  It is possible to enable by code and by design. Choose text and background color
• fix minor bugs

Attachment example 5

 

[hazaal]

Sorry if this sounds a bit stupid question, but is it possible to get a height of the row(s)? I need to be able to change FlexGrid height after some items have been added. Items are multirow text (one to 5 rows typically).

 

[Star-Dust]

The question is not clear to me. Do you want to know how many dots the height of a multi-line text is?

The height of the row is always the one set, it doesn't change if you put a text with several lines.

 

[hazaal]

The question is not clear to me. Do you want to know how many dots the height of a multi-line text is?

The height of the row is always the one set, it doesn't change if you put a text with several lines.

Hi and thank you for your fast reply,

Yes, that is what I would like to know, but of course FlexGrid should support text wrap + autosize, or I should know how to calculate text height from it's canvas. Well, I don't, and from your answer I am sensing that wrap+autosize isn't available?

I guess I have to take a look CustomListView, I was just hoping to manage with FlexGrid since it's so straightforward in every other way I am using list/grid here.

 

[Star-Dust]

There is no autosize available. You could measure the text with the command with B4CCanvas and then change the line height. I have no other solutions at the moment

 

[David Hawkins]

Hi Star-Dust good grid but I wondered if the Sorting problem had been resolved i.e. not removing duplicates

 

[Star-Dust]

Hi Star-Dust good grid but I wondered if the Sorting problem had been resolved i.e. not removing duplicates

Hi,
I didn't quite understand the question. Is it about the sorting that's giving you trouble? I'm not aware of any sorting issues.
Or are you talking about something else?

 

[David Hawkins]

Hi Star-Dust I have implemented your Flexgrid and when I try to sort on various columns it removes all the duplicates, this is the code I use.

Private Sub FlexGrid1_HeadClick(Index As Int)
    Try
        FlexGrid1.SortForCol(Index)
    Catch
        Log(LastException)
    End Try
End Sub

 

[Star-Dust]

Hi Star-Dust I have implemented your Flexgrid and when I try to sort on various columns it removes all the duplicates, this is the code I use.

Private Sub FlexGrid1_HeadClick(Index As Int)
    Try
        FlexGrid1.SortForCol(Index)
    Catch
        Log(LastException)
    End Try
End Sub

I'll try with an example.

 

[David Hawkins]

Thank you