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)
- B4XCollections (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:

klaus · Jul 6, 2016

Sorry, but without the possibility to test your problem I can't help.

vbmundo · Jul 6, 2016

Hi, I sent to you my entire project by Private.

I send to you My Trial DataBase Credentials and you must

1. Connect to this DataBase.
2. Choose QUERY
3. Run "SELECT * FROM videos"

And when the query finish (take over 2 minutes) try to scroll your Table control.

Thanks a Lot

klaus · Jul 6, 2016

Sorry, but you need to be patient. I will be on travel the next three days.

vbmundo · Jul 6, 2016

klaus said:
Sorry, but you need to be patient. I will be on travel the next three days.

Yes of course.

Thanks

watesoft · Jul 7, 2016

Very good,Thank for your great work!

vbmundo · Jul 8, 2016

Hi Klaus

I have the same problem with an only 29 records table.

And the SAVETOCSV doesn't work.. this option save the same record repeated a lot of times.

Regards

vbmundo · Jul 8, 2016

I see that the problem is with the NON-VISIBLE labels.. then you scroll the table and the NON-VISIBLE labels, appears repeatedly.

vbmundo · Jul 21, 2016

Hi

I have several problems with your lib.

On Every click in one cell, the data is changed .

This happend in every attempt.

I has remove this Grid in 2 Activities and replace this with a ListView, but in the last Activity I need to show several rows and columns..

Can you check to click a table with AutoWidth rows added ?

Regards

klaus · Jul 22, 2016

As already said in another thread, post a small project showing the problem !

vbmundo · Jul 22, 2016

I use a non FREE MySQL lib to fill this tables...

I ask to you about a CLICK EVENT issue in your lib.. when you have a TABLE that exced the Screen size and you need scroll this every click event fail...

You click on cell and the value change... and you have left a lot of repeted values.

You don't need a small project, you need to use your lib and try to click in one cell.

Sorry but is your lib, not my lib.

Regards

klaus · Jul 22, 2016

I tested the Table and it works as expected.
Therfore I cannot help because I cannot reproduce your problem.

Sorry but is your lib, not my lib.

It's not my class either.
The original class was written by Erel.
I added some features in this version.
Then Melamoud created this thread, but he is no more active in the forum.
I continue to maintain it.
And to be able to update new versions in the first post Erel changed me as the owner of this first post.

vbmundo · Jul 22, 2016

I'm debuging the Table Code.

When you click into a Cell, this control delete the entire row of labels and then recreate the new ones, with different colors.

When Delete the row (for example ROW 2) and recreate the new one, for any reason, this control take the Entire data of the ROW 3 and duplicate it into the NEW ROW 2)

This is a Control BUG... is not my project or my MySQL Controls...

Do you Understand ? when you DELETE the Row 2...

B4X:

Private Sub HideRow (Row As Int)
    'Log("HideRow: " & Row)
    Dim lbls() As Label
    lbls = visibleRows.get(Row)
    If lbls = Null Then
'        Log("HideRow: (null) " & Row)
        Return
    End If
    For I = 0 To lbls.Length - 1   
        lbls(I).RemoveView
    Next
    visibleRows.Remove(Row)
    LabelsCache.Add(lbls)
End Sub

THIS IS THE lbls = GetLabels(Row) Instruction

ROW 2 , have DELPHI info

THE NEXT INSTRUCTION IS values = Data.get(Row)

THE SAME ROW, BUT YOUR CONTROL RETRY DIFERENT DATA

THIS COBOL DATA, CORRESPOND TO THE NEXT ROW (I CLICK IN THE 2ND ROW, AND THE COBOL DATA IS IN THE 3RD ROW)

Maybe EREL need to see this...

Thanks

vbmundo · Jul 22, 2016

This is the principal BUG

For this reason... the scroll fails , and I has to quit this control of 2 activitys..

If Erel fix this Issue, this TABLE will the Holy Grial

vbmundo · Jul 22, 2016

DATA is the PROBLEM...

in Public Sub AddRowAutomaticWidth(Values() As String)

I debug and see 4 rows, with diferent VALUES,

But then DATA have 4 rows, with the same set of values... the Last values...

klaus · Jul 23, 2016

I had a closer look on your problem, I can reproduce it now and will look at it.
I suggest you to replace:

B4X:

For i = 0 To data.Size-1
    '
    '
    g.AddRowAutomaticWidth(Valores)
    g.RowHeight=35
    If Defa="auto_increment" Then MySQL.TieneAutoIncrement=True
Next

by

B4X:

g.RowHeight=35dip
For i = 0 To data.Size-1
    '
    '
    g.AddRow(Valores)
    If Defa="auto_increment" Then MySQL.TieneAutoIncrement=True
Next
g.SetAutomaticWidths

This will be more efficient.
You should move g.RowHeight=35 out of the loop and before it and replace 35 by 35dip.

vbmundo · Jul 23, 2016

Thanks Klaus,

But the problem is the DATA list .

I will debug line by line in some hours..

because DATA is fed with real and correct values. (I could debug it)

But then .. (not that SUB) something happens, and DATA is filled with the same INFO again and again.

Specifically, the last ROW read ...

So

You have 5 rows .... and the last is a fact about "Giraffes"

and you end up having the whole list DATA with the "Giraffes" ..

You understand?

vbmundo · Jul 23, 2016

Hi ,

Look.. this is the DATA list from your Control after CLICK

COBOL is the LAST row... and when you click (for example) in ROW 2.. and see the Entire DATA list.. you can see this... the last row repeated in all rows.

I hasn't modify or touch your TABLE.BAS file..

Can you help me ?

thanks

klaus · Jul 23, 2016

Can you try the attached project.

I could reproduce your problem once with the program I use to test the Table Class.
I added a filling routine similar to yours.
And the strange thing now, with exactly the same program it works as expected after several testing.
Can you try your project in Release mode.

In what module is your Click event ?

vbmundo · Jul 23, 2016

Doesn't work....

IS not only my movil... I have this APP in Google Play Beta Testing, and 2 betatesters report to me the same Issue.

vbmundo · Jul 23, 2016

Look.. this is with your last and previous Class.

B4A Library [Class] Flexible Table

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