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:

luciano deri · Jun 4, 2015

Tomorrow i will try to do a complete example

klaus · Jun 4, 2015

I didn't know that the ScrollViews, horizontal or vertical, consumed only the swipe for their own direction and pass the other direction to the underlying view.
Interesting.

LucaMs · Jun 4, 2015

Now, thanks to Klaus for the info about "event name" of ScrollViews, I modified the simple project.

I have to invent a better scrolling.

klaus · Jun 4, 2015

As you want to fix the first column you should use only 2 ScrollViews.
The problem is that every time svColumns(i).ScrollPosition is called it raises a ScrollChanged event. Calling itself again !

LucaMs · Jun 4, 2015

klaus said:
As you want to fix the first column you should use only 2 ScrollViews.

Yes, this was one "request", thank you. (I did it few months ago placing a listview on the left of a Table .

klaus said:
The problem is that every time svColumns(i).ScrollPosition is called it raises a ScrollChanged event. Calling itself again !

Yes, a recursive call, I know, sigh

I'm trying using a global variable like "IsScrolling" and also checking the sender, but, at the moment, without success. I would need of a "scrollingCompleted" event.

Thank you, Klaus.

LucaMs · Jun 4, 2015

LucaMs said:
I would need of a "scrollingCompleted" event.

if I know better java and I had not a headache, perhaps I would find the solution here.

LucaMs · Jun 4, 2015

LucaMs said:
if I know better java and I had not a headache, perhaps I would find the solution here.

... or not; I fear he searched the bottom of panel reached. (sorry, my english!)

LucaMs · Jun 4, 2015

This is "better", probably.

LucaMs · Jun 4, 2015

LucaMs said:
This is "better", probably.

Here we (I ?) need the intervention of Erel, DonManfred or some other Java expert.

LucaMs · Jun 4, 2015

Most likely use a OnTouchListener is easier, but you should give up the "long scrolling".

LucaMs · Jun 4, 2015

I have almost reached the target (attached).

The problem is to find the point where set to Null the ScrollView that started the scrolling (svStarter)

LucaMs · Jun 4, 2015

LucaMs said:
The problem is to find the point where set to Null the ScrollView that started the scrolling (svStarter)

... just for now, I used a timer.

I think it is possible to use an OnTouchListener: if the user press again on a ScrollView, set svStarter = Null

(I have found that, in English, this is called "soliloquy" )

luciano deri · Jun 5, 2015

This is my solution

LucaMs · Jun 5, 2015

@luciano deri, non ho capito lo scopo del timer, della velocità (una variabile, cE, non è inizializzata) etc.

Per me era sufficiente il fatto che puoi usare una ScrollView all'interno di una HorizontalView.

I did not understand the purpose of the timer, speed (BTW, a variable, cE, is "empty") etc.

For me it was enough the fact that you can use a ScrollView inside a HorizontalView.

luciano deri · Jun 5, 2015

Serve a centrare sempre il layout, se scorri in orizzontale solo parzialmente la app centra sulla successiva o la precedente.

It serves to center always the layout, if you scroll horizontally only partially the app focuses on the next or previous.

P.S.is not flour of my bag
https://www.b4x.com/android/forum/threads/horizontalscrollview-need-end-scroll-event.49123/

Jay Young · Jun 9, 2015

I am trying to load a sqlite db that i made into the flextable example and i keep getting errors the first one is on
line 324 cd1.Initialize(cColumnColors(i), 0) where (i) = index 5 and length = 5, i have a feeling this has to do with more columns in my db than the one that came with the example, any help on where to set these in the example.

error msg: java.lang.ArrayIndexOutOfBoundsException: length=5; index=5

klaus · Jun 9, 2015

Sorry, but without seeing the whole code it's impossible to give you a concrete answer.
You should at least post the whole code where you initialize the Table class and where you load the database, or better post a small project showing the problem.

luciano deri · Jun 9, 2015

Jay Young said:
I am trying to load a sqlite db that i made into the flextable example and i keep getting errors the first one is on
line 324 cd1.Initialize(cColumnColors(i), 0) where (i) = index 5 and length = 5, i have a feeling this has to do with more columns in my db than the one that came with the example, any help on where to set these in the example.

error msg: java.lang.ArrayIndexOutOfBoundsException: length=5; index=5

Control this:

How many column have the quary.
in DBTABLE.SetHeaderColors(Array As Int(Colors.Magenta,Colors.Blue,..)) are there enough colors for each column of the query?
in DBTABLE.SetColumnsWidths(Array As Int(25%x,75%X)) are there enough dimension for each column of the query?
Every where you have a array for define same propetis of colum you must control that there are enough colors for each column of the query

Jay Young · Jun 10, 2015

luciano deri said:
Control this:

How many column have the quary.

in DBTABLE.SetHeaderColors(Array As Int(Colors.Magenta,Colors.Blue,..)) are there enough colors for each column of the query?

in DBTABLE.SetColumnsWidths(Array As Int(25%x,75%X)) are there enough dimension for each column of the query?

Every where you have a array for define same propetis of colum you must control that there are enough colors for each column of the query

Hey thanks for your help i found out what is was I was not setting the number of colors in the code below, my table has 16 columns the example only had 5 in the Array

B4X:

    Dim tf() As Typeface
    tf = Array As Typeface(Typeface.DEFAULT, Typeface.DEFAULT_BOLD, Typeface.DEFAULT, Typeface.DEFAULT_BOLD, Typeface.DEFAULT, Typeface.DEFAULT, Typeface.DEFAULT, Typeface.DEFAULT, Typeface.DEFAULT, Typeface.DEFAULT, Typeface.DEFAULT, Typeface.DEFAULT, Typeface.DEFAULT, Typeface.DEFAULT, Typeface.DEFAULT, Typeface.DEFAULT)
    Table1.SetTypeFaces(tf)

    Table1.UseColumnColors = True
    Table1.SetColumnColors(Array As Int(Colors.White, 0xFF98F5FF, 0xFFFFC0FF, 0xFFC0FFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0))
    Table1.SetTextColors(Array As Int(Colors.Black, 0xFF800000, 0xFF0000FF, 0xFF004000, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040))
    Table1.SetHeaderColors(Array As Int(Colors.Black, 0xFF800000, 0xFF0000FF, 0xFF004000, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040, 0xFF400040))
    Table1.SetHeaderTextColors(Array As Int(Colors.White, 0xFF98F5FF, 0xFFFFC0FF, 0xFFC0FFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0, 0xFFFFFFC0))

>

Jay Young · Jun 10, 2015

using Flexible Table is it possible to click on a cell and change the value and update it in the sqlite db?

B4A Library [Class] Flexible Table

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