B4A Library [Class] Flexible Table

klaus · Jun 30, 2013

This thread will be used by Erel, Melamoud and myself to discuss / post new releases of the Table class.

The table class is a flexible UI component that enable scrollable table like UI, with sortable columns, multiselect rows etc

the table is very efficient, maintaining labels only for visible rows

old thread with details : http://www.b4x.com/forum/additional...view-supports-tables-any-size.html#post110901

The class depend on following libraries:
- StringUtils (standard)
- SQL (standard)
- JavaObject (standard)
- ScrollView2D (additional)

List of major features.
1. scrollable table UI
2. sortable columns
3. select a row, cell or multi select rows
4. callback for selection / click a cell / row
5. callback for long click action
6. read / write to CSV file

Current version --> 3.35 Custom View
Current version --> 1.44 Class

Other complementary routines:

Load data with the Remote Database Connector.

EDIT: LucaMs has written a routine to fill a table with a Remote Database Connector query result see post 182.
The routine hasn't been added into the Class for the reasons explained in post 183.
A sample program can be found HERE.

Code:

B4X:

'load data from a RDC Request
'Result = DBResult object got from a RDC request
'AutomaticWidths  True > set the column widths automaticaly
'Written by LucasMs
Public Sub LoadRDCResult(Result As DBResult, AutomaticWidths As Boolean)
    cAutomaticWidths = AutomaticWidths
    NumberOfColumns = Result.Columns.Size
    innerClearAll(NumberOfColumns)

    Dim Headers(NumberOfColumns) As String
    Dim ColumnWidths(NumberOfColumns) As Int
    Dim HeaderWidths(NumberOfColumns) As Int
    Dim DataWidths(NumberOfColumns) As Int
    Dim col, row As Int
    Dim str As String
    For col = 0 To NumberOfColumns - 1
        Headers(col) = Result.Columns.GetKeyAt(col)
        If AutomaticWidths = False Then
            ColumnWidths(col) = 130dip
            HeaderWidths(col) = 130dip
            DataWidths(col) = 130dip
        Else
            HeaderWidths(col) = cvs.MeasureStringWidth(Headers(col), Typeface.DEFAULT, cTextSize) + 8dip + cLineWidth
            DataWidths(col) = 0

            Dim FieldValue As Object
            For row = 0 To Result.Rows.Size - 1
                Dim Record() As Object = Result.Rows.Get(row)
                FieldValue = Record(col)
                If GetType(FieldValue) = "java.lang.String" Then
                    DataWidths(col) = Max(DataWidths(col), cvs.MeasureStringWidth(str, Typeface.DEFAULT, cTextSize) + 8dip + cLineWidth)
                End If
            Next
            ColumnWidths(col) = Max(HeaderWidths(col), DataWidths(col))
        End If
    Next
    SetHeader(Headers)
    SetColumnsWidths(ColumnWidths)

    For Each Record() As Object In Result.Rows
        Dim R(NumberOfColumns) As String
        Dim FieldV As String
        For col = 0 To NumberOfColumns - 1
            FieldV = Record(col)
            R(col) = FieldV
        Next
        AddRow(R)
    Next
End Sub

This is another routine updated by cimperia in post #392 using a Map for the columns and a List for the rows.

B4X:

'load data from a RDC Request
'A RDC request returns a DBResult object, therefore this method
'could be called as is:
'LoadRDCResult(DBResult.Columns, DBResult.Rows, True)
'AutomaticWidths  True > set the column widths automaticaly
'Written by LucasMs
Public Sub LoadRDCResult(Columns As Map, Rows As List, AutomaticWidths As Boolean)
  cAutomaticWidths = AutomaticWidths
  NumberOfColumns = Columns.Size
  innerClearAll(NumberOfColumns)

  Dim Headers(NumberOfColumns) As String
  Dim ColumnWidths(NumberOfColumns) As Int
  Dim HeaderWidths(NumberOfColumns) As Int
  Dim DataWidths(NumberOfColumns) As Int
  Dim col, row As Int
  Dim str As String
  For col = 0 To NumberOfColumns - 1
    Headers(col) = Columns.GetKeyAt(col)
    If AutomaticWidths = False Then
      ColumnWidths(col) = 130dip
      HeaderWidths(col) = 130dip
      DataWidths(col) = 130dip
    Else
      HeaderWidths(col) = cvs.MeasureStringWidth(Headers(col), Typeface.DEFAULT, cTextSize) + 8dip + cLineWidth
      DataWidths(col) = 0

      Dim FieldValue As Object
      For row = 0 To Rows.Size - 1
        Dim Record() As Object = Rows.Get(row)
        FieldValue = Record(col)
       If GetType(FieldValue) = "java.lang.String" Then
         DataWidths(col) = Max(DataWidths(col), cvs.MeasureStringWidth(str, Typeface.DEFAULT, cTextSize) + 8dip + cLineWidth)
       End If
      Next
      ColumnWidths(col) = Max(HeaderWidths(col), DataWidths(col))
    End If
  Next
  SetHeader(Headers)
  SetColumnsWidths(ColumnWidths)

  For Each Record() As Object In Rows
    Dim R(NumberOfColumns) As String
    Dim FieldV As String
    For col = 0 To NumberOfColumns - 1
      FieldV = Record(col)
      R(col) = FieldV
    Next
    AddRow(R)
  Next
End Sub

Load data from a MSMariaDB database.

Another routine for loading data from a MSMariaDB database can be found in post#727.
Thanks to @Magma.

Updates:
EDIT: 2024.04.21 Version 3.35
Replaced the original sorting functions by new ones kindly provided by forum member RB Smissaert.
Amended first scroll scrolling back to 0
Amended Header with transparent color

EDIT: 2024.01.13 Version 3.33
Changed possible values for DataType
TEXT and NUMBER become T, R and I
Amended problem with column colors
Amended problems with SetHeaderColors and SetHeaderTextColors

Version 3.32
Amended Header and HeaderFirst problem in SaveCSVFromTable
Moved If (lblStatusline... from AddRow to ShowRow

Version 3.31
Added SingleLine property for the Designer
Added StatusLineHeight as a property
Added FastScrollLabelMaxChars as a property

EDIT: 2021.06.28 Version 3.30
Added a check for none numeric values for numeric sorting.

EDIT: 2021.06.28 Version 3.29
Amended problem with column colors
Version 3.28
Added NumberOfColumns in the code
Added TopRowIndex method
Version 3.27
Amended MultiSelect EDIT: 2020.09.02 Version 3.26
Amended problem with sort with remove accents
Amended problem with SetRowColorN
Added SetCellAlignmentColN method
Added SetHeaderAlignmentColN method

EDIT: 2020.08.05 Version 3.24
Amended problem with JumpToRowAndSelect not being selected.
Amended error when setting RowHeight before the table initialized

EDIT: 2020.06.19 Version 3.22
Amended error in the insertRowAt routine.

EDIT: 2020.05.25 Version 3.21
Amended bug with TextSize in fixed columns

EDIT: 2020.05.16 Version 3.20
Added fast scroll feature
Version 3.19
Improved automatic width calculation and hidden columns
Version 3.18
Added a check in RemoveRowColorN to ensure that Row is not out of bounds
Added ShowRow event
Amended automatic width calculations
Amended hidden column width problem

EDIT: 2020.04.21 Version 3.17
Amended HeaderHight problem with fixed columns

EDIT: 2020.04.21 Version 3.16
Amended two errors.

EDIT: 2020.04.14 Version 3.14
Added the methods below
- LoadSQLiteDB4(SQLite As SQL, Query As String, AutomaticWidths As Boolean)
loads SQLite data with data type checking
- LoadSQLiteDB5(SQLite As SQL, Query As String, Values() As String, AutomaticWidths As Boolean).
loads SQLite data with data type checking , similar to LoadSQLiteDB4 but for parametrized queries.
- GetColumnDataTypes As String(), returns an Array with the data type for each column.
- GetColumnDataType(Column As Int) As String, returns the data type of the fiven column.
Added the InnerTotalWidth property, read only.
Added multiple first fiexed columns
Added line colors

EDIT: 2020.03.10 Version 3.10
Amended bug reported HERE

EDIT: 2020.03.06 Version 3.09
Amended bug reported HERE.

EDIT: 2020.02.29 Version 3.08
Amended SetHeaderTypefaces method problem reprted HERE.
Added HeaderTypeface property.

EDIT: 2020.01.08 Version 3.07
Amended bug ShowStatisLine = False property bug.
Added MultiSelect property to Designer properties.
You need to open and close the Designer when you use the new version the first time to make the MultiSelect property active.

EDIT: 2019.12.28 Version 3.06
Amened some bugs

EDIT: 2019.12.25 Version 3.05
Added FirstColumnFixed property which allows to fix the first column.
Attention: You need to open and close the Designer to make the new property active.

EDIT: 2019.11.15 Version 3.04
- Added SelectedRowTextColor and SlectedCellTextColor properties
- Added ZeroSelections property, True > when a selected row is pressed it will be unselected False > it remains selected.

EDIT: 2019.11.12 Version 3.03
- Changed JumpToRowAndSelect(Row As Int, Col As Int) to JumpToRowAndSelect(Col As Int, Row As Int)
- Changed LoadSQLiteDB2 signature. Replaced the possible values from "T", "I", "R" to "TEXT", "NUMBER" for coherence with SetColumnDataTypes.
- Added internal sorting bitmaps, avoids loading the image files into the Files folder.
- Added two new properties: SortBitmapWidth and SortBitmapColor.
- Added SetCustomSortingBitmaps method, which allows to use custom bitmaps instead of the internal ones.
Attention: You need to open and close the Designer to make the new properties active.
Attention: You need to invert the parameters in JumpToRowAndSelect.

EDIT: 2019.07.04 Version 3.02
Amended error reported in post #887

EDIT: 2019.06.26 Version 3.01
Amended SingleLine property setting in the code

EDIT: 2019.04.05 Version 3.00
Amended SetColumnColors and SetTextColors
Removed Reflection library dependency

EDIT: 2018.04.11 Version 2.29
Version 2.27
set the two variables sortedCol and sortingDir to Public instaed of Private
added RemoveAccent routine for sorting with accented characters
Version 2.28
Added SetHeaderTypeFaces
Added SortRemoveAccents property
Version 2.29
Added SaveTableToCSV2 with a user defined separator character

EDIT: 2018.04.11 Version 2.26
added LoadSQLiteDB3 method using SQLExec2 instead of SQLExec
The query can include question marks which will be replaced with the values in the array.

EDIT: 2018.03.27 Version 2.25
amended minor errors
added UpdateCell method

EDIT: 2017.11.19 Version 2.22
improved JumpToRowAndSelect scrolls horizontally to the selected column
improved setHeaderHeight
added padding for status bar Label

EDIT: 2017.06.27 Version 2.19
Replaced DoEvents by Sleep(0)
Asked HERE

EDIT: 2017.06.27 Version 2.19
Replaced DoEvents by Sleep(0)
Asked HERE

EDIT: 2017.05.16 Version 2.18
Amended error reported HERE.

EDIT: 2017.03.09 Version 2.17
Amended error reported HERE.

EDIT: 2017.03.09 Version 2.15
Amended error reported here, Event signatures
#Event: CellClick(col As Int, row As Int)
#Event: CellLongClick(col As Int, row As Int)

EDIT: 2016.12.05 Version 2.14
Added NumberOfColumns and NumberOfRows as Public variables.
Amended error reported here.

EDIT: 2016.12.05 Version 2.13
Amended error reported here.
Added NumberOfColumns as a property for the Designer.

EDIT: 2016.07.30 Version 2.10
Amended error with TextAlignment and HeaderTextAlignment reported in post #606

EDIT: 2016.03.15 Version 2.00
Added CustomView support.
This version can be compiled into a library.
Changes between the previous versions and version 2.00
For a Table added in the Designer, this is new
No need to initialize nor add it onto a parent view
'For a Table added in the Designer, this is new
'No need to initialize nor add it onto a parent view

For a Table added in the code:
The Initialize routine has been splittend into two routines.
New:
Initialize (CallBack As Object, EventName As String)
InitializeTable (vNumberOfColumns As Int, cellAlignement As Int, showStatusL As Boolean)
'Example:
Table1.Initialize(Me, "Table1")
Table1.InitializeTable(5, Gravity.CENTER_HORIZONTAL, True)

Old:
Initialize(CallBack As Object, EventName As String, vNumberOfColumns As Int, cellAlignement As Int, showStatusL As Boolean)
Example:
Table1.Initialize(Me, "Table1", 5, Gravity.CENTER_HORIZONTAL, True)

EDIT: 2015.04.29 Version 1.43
As the modifications in LoadSQLiteDB don't work in all cases I went back.
LoadSQLiteDB as in version 1.40
Added LoadSQLiteDB2 where the column data types must be given.

EDIT: 2015.04.26 Version 1.42
Changed he LoadSQLiteDB routine, version 1.41 didn't work as expected.
The final solution was suggested by cimperia HERE.

EDIT: 2015.04.16 Version 1.41
Changed the LoadSQLiteDB routine according to the error reported in the SQL issue thread
and the SQLite Cursor GetString versus GetDouble thread.
The problem appears with numbers bigger than 999999.
I left version 1.40 in case of problems.
I tested it with a few databases, but I am not sure if it works in all cases.

EDIT: 2015.03.05
Amended bugs reported in posts #383 and #386
Added SetAutomaticWidths routine

EDIT: 2015.02.19
Amended the problem alignment reported in post # 378

EDIT: 2015.02.13
Amended the problem of rows not shown reported in post # 371

EDIT: 2015.01.09
Added header aligments

EDIT: 2014.08.14
Added HeaderHeight property
Amended RowColor problem reported in post #260

EDIT: 2014.08.10
Added SortColumn property asked in post #266
Added UseColumnColors ColumnColors and HeaderColors propeties

EDIT: 2014.05.10 Added RowHeight as a property

Screenshot:

Mike Olmsted · Sep 23, 2013

More......
I liken the problem to where you cannot edit under the space that a table has allocated.
There is a gray line there that stops me from selecting Wages. My Google Nexus 7 is the new one
with the HD display.

klaus · Sep 24, 2013

The problem only occurs when the table exceeds one page. Try to select Wages on page 2 of the table.

Sorry, but I don't understand what you mean with page 1 and page 2 ?
I tested the project you posted in post #18 and it works OK on my Nexus One.

Best regards.

shashkiranr · Oct 2, 2013

Hi,

1. How was Db created in the example. I am using SQLite Studio to create a db but i am getting an error "Table not found" when i load the db into the table.

2. I copied the table details into a CSV and tried to load it. The Column headers are getting loaded properly but the values is not getting loaded at all.
I called

B4X:

Table1.LoadTableFromCSV(File.DirAssets,"testdummy.csv",True)

to load from CSV.

3. Is it possible to use MySqL dump like

B4X:

dummytest.sql

Kindly let me know your inputs and suggestions.

Regards,
SK

Mike Olmsted · Oct 2, 2013

Here is how to do it with the least lines of code.

B4X:

    pnlTable.Initialize("")
    Activity.AddView(pnlTable, 0dip, 40dip, 100%x , 80%y ) 
    table1.Initialize(Me, "Table1", 11, 1, True)
    table1.AddToActivity(pnlTable, 0, 0, pnlTable.Width, pnlTable.Height)     

    query = "SELECT * from tblNameAddress ORDER BY NameorCompany"       
    table1.loadsqlitedb(Main.SQL1,query,True)
    table1.SetColumnsWidths(Array As Int(50dip,160dip,100dip,100dip,0dip, 100dip,100dip, 180dip, 120dip, 60dip, 60dip))

If you don't need the panel you can save two lines.....Mike

AubreyPCR · Oct 2, 2013

klaus said:
Could you post a screenshot.
On my Nexus One it works OK.
Try to replace the height of the table in this line:
Activity.AddView(pnlTable, 0dip, 0dip, 100%x , 90%y )

Best regards.

Klaus,
I have the same problem on my S4. It is almost impossible to select the last row in the table.
My panel size is set by a designer script at layout load time and then I use the code

B4X:

tblData.AddToActivity(pnlTable, 0, 0, pnlTable.Width, pnlTable.Height)

to add the table.
I tried

B4X:

tblData.AddToActivity(pnlTable, 0, 0, pnlTable.Width, (pnlTable.Height/100)*90)

and this seemed to cure the selection problem. It left part of its internal panel visble which sort of ruined the look and wasted screen space so its not an ideal solution. Would it be possible to have a look at why this might be happening and maybe propose a different solution.
I am using table V1.24. Thank you as ever for sharing your code.
Regards,

shashkiranr · Oct 3, 2013

Hi

Any reply for this?

Regards,
SK

klaus · Oct 5, 2013

@shashkiranr
I am answering only today, I was on travel the last four days and came back today at noon.
1) The persons.db was created in an Excel csv file and converted into a db with a Basic4PPC program.
2) I don't know why this happens, could you post your project as a zip file and I'll have a look at it (IDE menu Files / Export As Zip).
3) No.

Best regards.

klaus · Oct 5, 2013

@Mike Olmsted
If you use this line:
table1.LoadSQLiteDB(Main.SQL1,query,True)
you don't need this one
table1.SetColumnsWidths(Array As Int(50dip,160dip,100dip, ...
because the True parameter in LoadSQLiteDB means automatic column widths, the program calculates the widht of the longuest entry in each column to determine its width.

If you want to define the widths yourself use
table1.loadsqlitedb(Main.SQL1,query,False)
table1.SetColumnsWidths(Array As Int(50dip,160dip,100dip,...
This will be faster, no column width calculation.

Best regards.

klaus · Oct 5, 2013

@AubreyPCR
Could you post your project as a zip file (IDE menu Files / Export As Zip).
Without seeing what exactly you have done in your code it's almost impossible to give a concrete advice.
I have never encountered a case where the last line was not visible.

Best regards.

AubreyPCR · Oct 7, 2013

klaus said:
@AubreyPCR
Could you post your project as a zip file (IDE menu Files / Export As Zip).
Without seeing what exactly you have done in your code it's almost impossible to give a concrete advice.
I have never encountered a case where the last line was not visible.

Best regards.

Klaus, thanks for responding.
Just to clarify. When I use the table "as is" I have a problem selecting the last visible row in a table (same as Mike Olmstead). Its as if the area capturing the touch event did not extend all the way to the bottom of the table. So I tried your advice about reducing the size by 10% which resulted in the image I posted. I'll try to post the code later.

Regards.

sdujolo · Oct 10, 2013

Hi!

How to edit a cell?

klaus · Oct 10, 2013

You can get or set the content of a cell with:

B4X:

value = Table1.GetValue(col, row)
Table1.SetValue(col, row, value)

Best regards.

duneplodder · Oct 11, 2013

I use this table class in one of my projects. Thank you for making it available.
It is used mainly to present numeric data. I would like to highlight certain cells e.g. where the value is over 10.
Would it be possible to change the color of individual cells at a specific row/column? I haven't done much with classes and can't see how this could be achieved.
Regards,
Robert

shashkiranr · Oct 11, 2013

I am answering only today, I was on travel the last four days and came back today at noon.
1) The persons.db was created in an Excel csv file and converted into a db with a Basic4PPC program.
2) I don't know why this happens, could you post your project as a zip file and I'll have a look at it (IDE menu Files / Export As Zip).
3) No.

Hi Kluas,

Sorry for the delayed reply.

1. I am using Sql Studio. it creates Database in DBF format and not .db format. Is there any other way which i can use to create .db files?
IF yes kindly let me know

2. I have attached the sample project which is same as tableV1_24. Only thing is i am loading the contents using LoadTableFromCSV method.
Kindly let me know the mistake i am making. Is it possible to give an example to using the LoadTableFromCSV. It would be of great help.

Mike Olmsted · Oct 11, 2013

shashkiranr said:
Hi Kluas,

Sorry for the delayed reply.

1. I am using Sql Studio. it creates Database in DBF format and not .db format. Is there any other way which i can use to create .db files?
IF yes kindly let me know

2. I have attached the sample project which is same as tableV1_24. Only thing is i am loading the contents using LoadTableFromCSV method.
Kindly let me know the mistake i am making. Is it possible to give an example to using the LoadTableFromCSV. It would be of great help.

This fixes it.....

klaus · Oct 11, 2013

@duneplodder
Adding a different color for each cell would need a more deep modification of the class.
Because we need to add data to remember the background for each cell or at least for the modified cells which is currently not the case.
I'm afraid that this would slow down the loading of big tables.

Best regards.

duneplodder · Oct 11, 2013

Klaus,
I understand, thank you.
Regards,
Robert

klaus · Oct 11, 2013

@shashkiranr
In your code two problems:
1) You should use
Table1.LoadTableFromCSV(File.DirAssets,"mydatabase.csv",True) because your csv file has headers.
instead of
Table1.LoadTableFromCSV(File.DirAssets,"mydatabase.csv",False) in your case the haeder line is considered as the first row line !

2) As Mike Olnsted already reported you should add a line similar to this one after the previous one:
Table1.SetColumnsWidths(Array As Int(100dip, 100dip, 100dip))
Unfortunately the LoadTableFromCSV routine didn't set column widths by default.

Attached you find an amended version 1.25.
I added also a new routine :
LoadTableFromCSV2(Dir As String, Filename As String, HeadersExist As Boolean, SeparatorChar As String, AutomaticWidths As Boolean)
This routine alows to set the separator character and set an automatic column width calculation.
I kept the LoadTableFromCSV routine for backward compatibility.

To look at SQLite DB files I use a free program SQLite2009 Pro but there are also others.

Best regards.

EDIT:
Removed the zip file, the latest version is in the first post.

zeuspower · Oct 15, 2013

very good..
One problem,i have is when I use the LOADSQLITE and auto-width of columns,I can't put my own header names...
it receives automatic the field headers of my DB...

how to ?

vecino · Oct 16, 2013

Hello, the good version is the first post (v1.20) or that of the last post (1.25)?
Thanks and regards.

B4A Library [Class] Flexible Table

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