Category Archives: News

Windows October Update ODBC export Excel problems

WindowsUpdate

Windows updates, you gotta love them! This October update has a lot of developers scratching their head.

Here at OneTwo, we became first aware of the problem when some clients called our support team with the same remark: “Exporting the data to Excel does not work!”  After going through the usual procedure following the directions of Roy Trenneman from the IT crowdhave you tried turning it on and off again?“, we quickly became aware there was something more going on…

Indeed, Microsoft had rolled out a new update.  “Drop everything, we have a KB hunt on our hands!”  A time consuming thing to do, and in the meantime a lot of worried users.  Google and the MSDN site had to do overtime too.

SEE UPDATE FURTHER FOR A MORE PERMANENT SOLUTION!

Quite some time later, we found the little buggers. Here is the list for anyone out there banging his head aginst the wall asking himself why his code, which has been running for years, suddenly stopped working:

  • Windows 7: KB4041681
  • Windows 8.1: KB40416393
  • Windows 10: KB4040724/KB4041676

Uninstall them and reboot. Hooray, code is working again!

UPDATE:

It looks like Windows keeps insisting to run the update.  Here is a more permanent solution.

1. Find prior version (4.0.9801.0) of msexcl40.dll

2. Place in another directory. They suggest the application directory, but since in the next step you will modify registry to point to this older version, it can probably go anywhere.

3. Update registry key HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Jet\4.0\Engines\Excel\win32 to point to the location from step 2.

You don’t even have to restart your PC.

Have a great weekend, my fellow IT minions!

Alwaysbusy

Click here to Donation and support ABMaterial

Or make a donation with Bitcoins:

BTC: 13x7b12GonCj6iphnjLuonrwURK2jCgMdE

This is my bitcoin address as a QR code. It is possible to send bitcoins to me from mobile wallets by scanning this code.

13x7b12GonCj6iphnjLuonrwURK2jCgMdE

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B4J: Printing/Reporting with upcoming ABMaterial 3.75

2
A sneak peek on a new feature of ABMaterial for B4J I’m working on: Printing/Reporting.

This is an example of a report in ABMaterial. You build it right into your other pages and just by setting a couple of parameters, you control what will be shown on screen and what will be printed.

1
The block your see above ‘INVOICE’ will not be printed, just my setting lbl.IsPrintable = false.  What is shown on screen you control by using the normal ABM.VISIBLE_ constants. For example there are some additional notes with a chart that you can’t see here on screen, but will be printed.

You can use almost every ABM component in your report. Good examples are the ABMChart, the ABMChronologyList or even like in this example you can let your client sign the document using an ABMSignaturePad and print it right out.

The ABM components avoid being split over two pages (e.g. an image will be printed on the next page if it does not fit). Browsers let you control very little on how things are printed, but I’ve added some things like ReportFooter.row(3).PrintPageBreak = ABM.PRINT_PAGEBREAK_BEFORE_ALWAYS to give you some control.

Note that the navigation bar is not printed either. All of this is taken care for you automatically by ABMaterial!

3
Some example pdf prints from the demo app (without making any modification to the source code!). Try printing the same pages with ABMaterial 3.50 or before and you’ll see the difference.

http://gorgeousapps.com/PrintExamples.zip

Making the above ‘invoice report’ is really simple and in the spirit of ABMaterial. I’ve created a new component ABMReport (and ABMReportBlock) which you can use just like you would make an ABMCustomComponent.

Relevant source code snippet of the above report (the Build event is where the magic happens, the rest are more helper methods):

Sub Class_Globals
   Dim ABM As ABMaterial
   Dim Report As ABMReport

   ' some CSS to format the 'body' of the report
   Dim ReportCSS As String = $"
   .repheader, .repfooter, .repheaderright, .repfooterright {
     background-color: lightgray;
     font-size: 1.8rem;
   }
   .repheaderright, .repbodyright, .repfooterright {
     text-align: right;
   }
   .repbody, .repbodyright {
     font-size: 1.5rem;
   }

   @media only print {
     html { font-size: 60%}
   }"$

   Dim mSQL As SQL 'ignore
   Dim mInvoiceID As Int 'ignore
End Sub

Public Sub Initialize(InternalPage As ABMPage, ID As String)
   Report.Initialize("Report", Me, InternalPage, ID, ReportCSS, "")
End Sub

Sub Report_Build(InternalPage As ABMPage, internalID As String)
   ' the report header
   Dim ReportHeader As ABMContainer = Report.Header.InitializeAsContainer(InternalPage, "reportheader", "", ABM.PRINT_PAGEBREAK_INSIDE_AVOID)
   ReportHeader.AddRows(1,False, "border").AddCells12(1,"")
   ReportHeader.AddRows(1,False, "").AddCellsOS(1,0,0,0,9,9,9,"").AddCellsOSMP(1,0,0,0,3,3,3,20,0,0,0,"right")
   ReportHeader.AddRows(1,False, "").AddCellsOS(1,0,0,0,7,7,7,"").AddCellsOS(1,0,0,0,5,5,5,"")
   ReportHeader.BuildGrid

   ReportHeader.CellR(0,1).AddComponent(BuildLabel(InternalPage, "repTitle", "{B}I N V O I C E{/B}", ABM.SIZE_H4, "center", True, ABM.VISIBILITY_ALL))
   ReportHeader.CellR(1,1).AddComponent(BuildLabel(InternalPage, "repAddress", "Jonathan Neal{BR}{BR}101 E. Chapman Ave{BR}Orange, CA 92866{BR}{BR}(800) 555-1234",ABM.SIZE_H5, "", True, ABM.VISIBILITY_ALL))
   ReportHeader.CellR(0,2).AddComponent(BuildImage(InternalPage, "repImg", "../images/logo2.png", True, ABM.VISIBILITY_ALL))
   ReportHeader.CellR(1,1).AddComponent(BuildLabel(InternalPage, "repCompany", "{B}Some Company{/B}{BR}{B}c/o Some Guy{/B}", ABM.SIZE_H4, "", True, ABM.VISIBILITY_ALL))
   ReportHeader.CellR(0,2).AddComponent(Build3Block(InternalPage, "repInvoiceData", "{B}Invoice #{/B}", "101138", "{B}Date{/B}", "Januari 1, 2017","{B}Amount Due{/B}","$ 600.00", True, ABM.VISIBILITY_ALL)   )

   ' the report body
   Dim Body As ABMReport
   Body.Initialize("Body", Me, InternalPage, internalID & "body", "", ABM.PRINT_PAGEBREAK_INSIDE_AVOID)
   ' header of the body
   Body.Header.InitializeAsTexts(Array As String("Year(s) Overview", "Q1", "Q2", "Q3", "Q4"), Array As Int(40,15,15,15,15), Array As String("repheader","repheaderright","repheaderright","repheaderright","repheaderright"), "")

   ' detail lines: here you can e.g. run queries but for demo purposes let's do everything manual
   Dim sums(5) As Int
   For i = 1 To 9
     ' change the class of the last column on the second row
     Dim ColorClass As String = "repbodyright"
     If i = 2 Then
       ColorClass = "repbodyright red-text"
     End If

     ' create a text block
     Dim block As ABMReportBlock
     block.InitializeAsTexts(Array As String("Year 200" & i, 200*i, 300*i, 400*i, 500*i), Array As Int(40,15,15,15,15), Array As String("repbody","repbodyright",ColorClass, "repbodyright","repbodyright"), "")
     Body.AddBodyBlock(block)

     ' dirty way to make the sums
     For k = 1 To 4
       sums(k) = sums(k) + (20 + (k-1)*100) * i
     Next
   Next

   ' footer of the body
   Body.Footer.InitializeAsTexts(Array As String("{NBSP}", sums(1) , sums(2), "{B}" & sums(3) & "{/B}", sums(4)), Array As Int(40,15,15,15, 15), Array As String("repfooter", "repfooterright","repfooterright","repfooterright","repfooterright"), "")
   ' add the subreport 'body' to the body of the main report
   Report.AddBodySubReport(Body)

   ' the report footer
   Dim ReportFooter As ABMContainer = Report.Footer.InitializeAsContainer(InternalPage, "reportfooter", "", "")

   ReportFooter.AddRows(1,False, "").AddCells12(1,"")
   ReportFooter.AddRows(1,False, "").AddCellsOS(1,0,0,0,2,2,2,"").AddCellsOSMP(1,0,0,0,5,5,5,0,0,10,40,"").AddCellsOS(1,0,0,0,5,5,5,"")
   ReportFooter.AddRows(1,False, "").AddCells12(1,"")
   ReportFooter.AddRows(1,False, "").AddCells12(1,"")
   ReportFooter.AddRows(1,False, "").AddCellsOSMP(1,4,4,4,4,4,4,0,0,0,0,"")
   ReportFooter.AddRows(2,False, "").AddCells12(1,"")
   ReportFooter.BuildGrid

   ReportFooter.CellR(1,1).AddComponent(BuildLabel(InternalPage, "RepSignatureLbl", "Please sign this document", ABM.SIZE_H5, "", True, ABM.VISIBILITY_ALL))
   ReportFooter.CellR(0,2).AddComponent(BuildSignature(InternalPage, "repSignature", True, ABM.VISIBILITY_ALL))
   ReportFooter.CellR(0,3).AddComponent(Build3Block(InternalPage, "repTotalData", "{B}Total{/B}","$ 600.00","{B}Amount Paid{/B}","$ 0.00","{B}Balance Due{/B}","$ 600.00", True, ABM.VISIBILITY_ALL))

   ' avoid row 2 to be broken (can give weird results, depends on browser support!)
   ReportFooter.row(2).PrintPageBreak = ABM.PRINT_PAGEBREAK_INSIDE_AVOID

   ' alaways break before printing row 3
   ReportFooter.row(3).PrintPageBreak = ABM.PRINT_PAGEBREAK_BEFORE_ALWAYS

   ' all the rest is only visible on the print, not on the screen
   ReportFooter.CellR(1,1).AddComponent(BuildLabel(InternalPage, "AdditionalNotes", "{B}A D D I T I O N A L {NBSP}  N O T E S{/B}", ABM.SIZE_H4, "center", True, ABM.VISIBILITY_HIDE_ALL))
   ReportFooter.CellR(0,1).AddComponent(BuildDivider(InternalPage, "divider", True, ABM.VISIBILITY_HIDE_ALL))
   ReportFooter.CellR(0,1).AddComponent(BuildLabel(InternalPage, "note1", "Note 1: A finance charge of 1.5% will be made on unpaid balances after 30 days.", ABM.SIZE_H6, "", True, ABM.VISIBILITY_HIDE_ALL))
   ReportFooter.CellR(1,1).AddComponent(BuildLabel(InternalPage, "note2", "Note 2: Your current purchase chart.", ABM.SIZE_H6, "", True, ABM.VISIBILITY_HIDE_ALL))

   ' create a pie chart
   Dim chart5 As ABMChart
   chart5.Initialize(InternalPage, "chart5", ABM.CHART_TYPEPIE, ABM.CHART_RATIO_SQUARE, "chart5theme")
   chart5.Visibility = ABM.VISIBILITY_HIDE_ALL
   ' Something special, Label interpolation.  the value will transformed into a percentage format (This is Javascript!)
   Dim SumValues As Int = 30+50+70+80+100+140+170
   chart5.OptionsPie.LabelInterpolation = "Math.round(value / " & SumValues  & " * 100) + '%'"
   ' add ONE serie
   Dim Serie5A As ABMChartSerie
   Serie5A.InitializeForPie
   Serie5A.SetValues(Array As Int(30,50,70,80,100,140,170))
   chart5.AddSerie(Serie5A)
   ' add the chart to the cell
   ReportFooter.CellR(1,1).AddComponent(chart5)
End Sub

' Helper Methods
Sub BuildLabel(internalPage As ABMPage, ID As String, Text As String, Size As String, theme As String, isPrintable As Boolean, Visibility As String) As ABMLabel
   Dim tmpLbl As ABMLabel
   tmpLbl.Initialize(internalPage, ID, Text, Size, False, theme)
   tmpLbl.IsPrintable = isPrintable
   tmpLbl.Visibility = Visibility
   Return tmpLbl
End Sub
...

It will never be able to print everything of course (e.g. scrolling components), but I’m pretty happy with the things it will be able to do.  Browser support for report printing is still in its infancy I’m afraid and it will take some time before all browsers are lined up supporting all HTML printing features.

But, together with the new ABMreport component, you will already be able to create reports with very little effort using ABMaterial and B4J!

ABMaterial 3.75 will be available for donators in a couple of weeks.

Alwaysbusy

Click here to Donation and support ABMaterial

Or make a donation with Bitcoins:

BTC: 13x7b12GonCj6iphnjLuonrwURK2jCgMdE

This is my bitcoin address as a QR code. It is possible to send bitcoins to me from mobile wallets by scanning this code.

13x7b12GonCj6iphnjLuonrwURK2jCgMdE


B4J: IMPORTANT change in ABMaterial for B4J 5.80+

As B4J 5.80 has been updated to Jetty 9.4.6 (which contains an important change in the internal Session framework), you will need to update some code in StartServer() and StartServerHTTP2() in the ABMApplication module.

In pre B4J 5.80 with Jetty 9.3.x it was:

Dim joServer As JavaObject = srvr
joServer.GetFieldJO("server").RunMethod("stop", Null)
joServer.GetFieldJO("context").RunMethodJO("getSessionHandler", Null).RunMethodJO("getSessionManager", Null).RunMethodJO("getSessionCookieConfig", Null).RunMethod("setMaxAge", Array(31536000)) ' 1 year

'NEW FEATURE! Each App has its own Session Cookie
joServer.GetFieldJO("context").RunMethodJO("getSessionHandler", Null).RunMethodJO("getSessionManager", Null).RunMethodJO("getSessionCookieConfig", Null).RunMethod("setName", Array(ABMShared.AppName.ToUpperCase))
joServer.GetFieldJO("server").RunMethod("start", Null)

must be changed to this in B4J 5.80+ with Jetty 9.4.6:

Dim joServer As JavaObject = srvr
joServer.GetFieldJO("server").RunMethod("stop", Null)
joServer.GetFieldJO("context").RunMethodJO("getSessionHandler", Null).RunMethodJO("getSessionCookieConfig", Null).RunMethod("setMaxAge", Array(31536000)) ' 1 year

' NEW FEATURE! Each App has its own Session Cookie
joServer.GetFieldJO("context").RunMethodJO("getSessionHandler", Null).RunMethodJO("getSessionCookieConfig", Null).RunMethod("setName", Array(ABMShared.AppName.ToUpperCase))
joServer.GetFieldJO("server").RunMethod("start", Null)

' + This setting is with reservation until confirmation
Dim secs As Long = ABMShared.CacheScavengePeriodSeconds ' must be defined as a long, else you get a 'java.lang.RuntimeException: Method: setIntervalSec not matched.' error
joServer.GetFieldJO("context").RunMethodJO("getSessionHandler", Null).RunMethodJO("getSessionIdManager", Null).RunMethodJO("getSessionHouseKeeper", Null).RunMethod("setIntervalSec", Array As Object(secs))

This will be corrected in the next upcoming release 3.75 of ABMaterial.

Alwaysbusy

Click here to Donation and support ABMaterial


B4J: ABMaterial 3.20 Public/3.50 Donators Released!

ABMB4JABMaterial 3.50 for B4J introduces Drag & Drop of ABMContainers between Cells! This new feature took a couple of weeks to implement, but I’m proud of the result.
It opens up a whole new range of possibilities for Web Apps.

Not many bug fixing needed in this release. Proves ABMaterial is really stable and truly production ready! (Happy face)

ABMGoogleMap also adds the possibility to use marker clusters, which cleans up your google map if you have many markers in one map.

GM2

Head to the ABMaterial section on this blog to get your free copy of 3.20, or make a small donation to support the development and get the latest 3.50 version + 9 extra libraries and tools to use in your own projects!

Have a great summer!

Alwaysbusy

Click here to Donation and support ABMaterial

 


B4X: ABMaterial 3.03 Public/3.20 Donators released

A lot of internal changes were made in the ABMaterial 3.20 ‘Chipmunk’ release.  For example, ABMContainer has been rewritten from the ground-up, but with minimal impact to your existing projects.  It allows adding them as array components, and has much shorter ID tags in the generated HTML.

Mindful and Stanmiller had another go on the cache issues.  They came up with a very nice solution (I had tears in my eyes) and both have done extensive testing on this subject. A big thanks again!  ABM 3.20 is backwards compatible with the previous 3.0.3 Cache System, but I would advice you to make the changes whenever you have the chance.

A nice new feature for mobile devices is the New Debug feature using a modified version of Conzole!

New Debug at work:

Using this new feature is very simple in B4J:

First, you have to enable the console in BuildPage():

' params are: open on load, width
page.DebugConsoleEnable(True, 300)

Two methods can be used to show or hide the console programmaticaly. Can be handy as a buid-in tool in your apps where the user enters a code on his device and you can then check the console.

page.DebugConsoleShow
page.DebugConsoleHide

Now you can start doing some cool stuff 🙂 Some examples:

Show some text, or a server value (note: strings must be between single quotes!)

page.DebugConsoleLog("'Server click at: " & DateTime.Time(DateTime.Now) & "'") ' shows the text

Now I generated an error on purpose, so the demo can show it catches the error:

page.DebugConsoleLog("'value: ' + $('#pi002-r2c1').html();") ' generates an error, the ; at the end is wrong

Same code, but with the correct javascript syntax, showing the html() value of the tag:

page.DebugConsoleLog("'value: ' + $('#pi002-r2c1').html()") ' generates the html value of the pi002-r2c1 tag

It works also on the desktop, although you probably will use the Chrome console as you can do more.

But there is more. You can also redirect all browser console message directly into the B4J log window!  You can use the following commands anywhere in your own code to start/stop receiving the browser console messages.

page.DebugConsoleB4JStart
page.DebugConsoleB4JStop

This is a very powerful feature if you develop Webapps for mobile devices.  It can be done otherwise, but it is a pain in the a$$ to set it up. Now, you can easily debug it on your iPhone, iPad, Android or any other device.

ABMaterial 3.20 has over 20 new features and bug fixes.  Following the same philosophy as B4X, the quick release cycle has proven to work very well for ABMaterial and its many users.  Donators will receive their download mail shortly.  The public version 3.03 can be downloaded from this blog too.

I’m also glad that with these releases, now everyone can work with ‘Chipmunk‘, and this does also mean the development cycle for ‘Butterfly‘  has ended.

I would like to take this opportunity to thank everyone for the support, hourless testing and inventive ideas you came up with in the last few years. You’ve made ABMaterial one hell of a WebApp Development Tool!

ThankYou

But we are not at the end! Far from it as I already have big ideas for the next releases.

Until then, happy programming!

Alwaysbusy

Click here to Donation and support ABMaterial


B4A: ABFlicB4A library for Flic buttons

cute-as-a-button-1

You probably have seen these nifty little IoT Flic buttons around. They are a fun and relative cheap BLE button that allows you to do something when the button is clicked, doubleclicked or hold.

I decided to write a wrapper for the Android SDK to use with B4A.

How to use:
1. Install the Flic app from the Google Play.
2. On their developer page, create a new app: you get a key and a secret.
3. Copy the ABFlicB4A library jar and xml to your library folder and select it in B4A

Here is a small video demonstrating the library.  You can the use the full power of B4A to do about, well, everything…

Example usage code:

Sub Process_Globals

End Sub

Sub Globals
   Private flic As ABFlic
   Private Button2 As Button
   Private Button3 As Button
   Private Button4 As Button
   Private Label1 As Label
   Private Button1 As Button

   Private MyFlicID As String

   Private FlicResults As List
End Sub

Sub Activity_Create(FirstTime As Boolean)
   Activity.LoadLayout("1")
   FlicResults.Initialize
   FlicResults.Add("RESULTACTION_HOLD")
   FlicResults.Add("RESULTACTION_SINGLECLICK")
   FlicResults.Add("RESULTACTION_DOUBLECLICK")
End Sub

Sub Activity_Resume
   ' your key and secret
   flic.Initialize("Flic", "d60d36a0-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", "db5c2b3d-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", "ABFlicTest")
End Sub

Sub Button1_Click
   flic.ForgetButton(MyFlicID)
End Sub

Sub Button2_Click
   flic.GrabButton
End Sub

Sub Button3_Click
   flic.StartListening
End Sub

Sub Button4_Click
   flic.StopListening
End Sub

Sub flic_Added(buttonID As String, Name As String)
   MyFlicID = buttonID
   Log("Added: " & buttonID)
   Label1.Text = "Added: " & buttonID & CRLF & Label1.Text
End Sub

Sub flic_Clicked(buttonID As String, wasQueued As Boolean, timeDiff As Int)
   MyFlicID = buttonID
   Log("Clicked: " & buttonID)
   Label1.Text = "Clicked: " & buttonID & CRLF & Label1.Text
End Sub

Sub flic_DoubleClicked(buttonID As String, wasQueued As Boolean, timeDiff As Int)
   MyFlicID = buttonID
   Log("DoubleClicked: " & buttonID)
   Label1.Text = "DoubleClicked: " & buttonID & CRLF & Label1.Text
End Sub

Sub flic_Holded(buttonID As String, wasQueued As Boolean, timeDiff As Int)
   MyFlicID = buttonID
   Log("Holded: " & buttonID)
   Label1.Text = "Holded: " & buttonID & CRLF & Label1.Text
End Sub

Sub flic_Removed(buttonID As String)
   MyFlicID = ""
   Log("Removed: " & buttonID)
   Label1.Text = "Removed: " & buttonID & CRLF & Label1.Text
End Sub

Sub flic_Error(err As Int)
   Log("Error: " & err)
   Label1.Text = "Error: " & err & CRLF & Label1.Text
End Sub

I’m currently working on a Desktop/Raspberry Pi version of this library, which I will share in the B4J forum later.

The library can be found at the B4A forum.

Happy programming!

Alwaysbusy


B4J: New ABMChat component for ABMaterial 2.50

abmchat

ABMChat is a new cool looking ABMaterial component to create a Web based chat program. The inner workings are very much like Erels ChatRoom, but with a slick interface. This can be a useful control if for example you want to give chat-like support within you own B4J webapp.

Some features:
– Balloon/Bubble-like chat
– Support for some ASCII emoji
– IsTyping ballon

Coding this with B4J and ABMaterial is very easy:

Code ChatShared module:

Sub Process_Globals
   Public AvoidDuplicates As Map
   Private connections As Map
   Public LastMessages As List
   Private IsTypingMap As Map
End Sub

public Sub Init
   AvoidDuplicates = Main.srvr.CreateThreadSafeMap
   connections.Initialize
   LastMessages.Initialize
   IsTypingMap.Initialize
End Sub

public Sub NewConnection(page As ChatPage, pageID As String)
   DateTime.TimeFormat = "HH:mm"

   Dim IdentifyBubble As ABMChatBubble
   IdentifyBubble.Initialize("Server", page.ChatName & " has joined the chat...", "Server " & DateTime.Time(DateTime.Now), "server", "server")
   JoinLeftMessage(pageID, IdentifyBubble)
   connections.Put(pageID, page)
   CallSubDelayed2(page, "CurrentConversation", LastMessages)
End Sub

public Sub NewMessage(pageID As String, Message As ABMChatBubble)
   LastMessages.Add(Message)
   For Each page As ChatPage In connections.Values
     CallSubDelayed2(page, "NewMessage", Message)
   Next
End Sub

public Sub JoinLeftMessage(pageID As String, Message As ABMChatBubble)
   For Each page As ChatPage In connections.Values
     CallSubDelayed2(page, "NewMessage", Message)
   Next
End Sub

public Sub IsTyping(pageID As String, Value As String)
   Dim typeBool As Boolean
   If Value = "" Then
     IsTypingMap.Remove(pageID.ToLowerCase)
   Else
     IsTypingMap.put(pageID.ToLowerCase, "true")
   End If
   If IsTypingMap.Size > 0 Then
     typeBool = True
   End If
   For Each page As ChatPage In connections.Values
     CallSubDelayed3(page, "IsTyping", pageID, typeBool)
   Next
End Sub

public Sub Disconnected(page As ChatPage, pageID As String)
   If connections.ContainsKey(pageID) = False Or connections.Get(pageID) <> page Then Return
   Dim LeaveBubble As ABMChatBubble
   LeaveBubble.Initialize("Server", page.ChatName & " has left the chat...", "Server " & DateTime.Time(DateTime.Now), "server","server")
   JoinLeftMessage(pageID, LeaveBubble)
   connections.Remove(pageID)
   AvoidDuplicates.Remove(pageID.ToLowerCase)
End Sub

Public Sub HasIdentified(pageID As String) As Boolean
   Return connections.ContainsKey(pageID)
End Sub

Relevant Code ChatPage class:

Private Sub WebSocket_Disconnected
   Log("Disconnected")
   If ABMPageId <> "" Then CallSubDelayed3(ChatShared, "Disconnected", Me, ABMPageId)
End Sub

public Sub BuildTheme()
   ' start with the base theme defined in ABMShared
   theme.Initialize("pagetheme")
   theme.AddABMTheme(ABMShared.MyTheme)

   ' add additional themes specific for this page
   theme.AddChatTheme("myChat")
   theme.Chat("myChat").AddBubble("server")
   theme.Chat("myChat").Bubble("server").Color = ABM.COLOR_BLACK
   theme.Chat("myChat").Bubble("server").TextColor = ABM.COLOR_WHITE

   theme.Chat("myChat").AddBubble("me")
   theme.Chat("myChat").Bubble("me").Color = ABM.COLOR_LIGHTBLUE
   theme.Chat("myChat").Bubble("me").TextColor = ABM.COLOR_WHITE

   theme.Chat("myChat").AddBubble("them")
   theme.Chat("myChat").Bubble("them").Color = ABM.COLOR_GREY
   theme.Chat("myChat").Bubble("them").ColorIntensity = ABM.INTENSITY_LIGHTEN2
   theme.Chat("myChat").Bubble("them").TextColor = ABM.COLOR_BLACK
End Sub

public Sub ConnectPage()
'   connecting the navigation bar    

'   init all your own variables (like a List, Map) and add your components
   Dim chat As ABMChat
   chat.Initialize(page, "conversation",600, 450, 255, "mychat")
   chat.AddBubble("Server", "I'm Server, what is your name?", "The Server", "server", "server")

   page.Cell(1,1).AddComponent(chat)

   Dim ChatInput As ABMInput
   ChatInput.Initialize(page, "ChatInput", ABM.INPUT_TEXT, "", False, "")
   ChatInput.PlaceHolderText = "Type your message here...."
   ChatInput.RaiseChangedEvent = True
   page.Cell(2,1).AddComponent(ChatInput)

   ' refresh the page
   page.Refresh
   ' Tell the browser we finished loading
   page.FinishedLoading
   ' restoring the navigation bar position
   page.RestoreNavigationBarPosition
End Sub

Sub ChatInput_Changed(value As String)
   If ChatShared.HasIdentified(ABMPageId) Then
     CallSubDelayed3(ChatShared, "IsTyping", ABMPageId, value)
   End If
End Sub

Sub ChatInput_EnterPressed(value As String)
   DateTime.TimeFormat = "HH:mm"

   If ChatShared.HasIdentified(ABMPageId) Then
     Dim bubble As ABMChatBubble
     bubble.Initialize(ChatName, value, ChatName & " " & DateTime.Time(DateTime.Now), "me", "them")
     CallSubDelayed3(ChatShared, "NewMessage", ABMPageId, bubble)
     CallSubDelayed3(ChatShared, "IsTyping", ABMPageId, "")
   Else
     If value = "" Then Return
     If ChatShared.AvoidDuplicates.ContainsKey(value.ToLowerCase) Then
       Dim chat As ABMChat = page.Component("conversation")
       chat.AddBubble("Server", "Sorry, but " & value & " is already taken!", "The Server", "server", "server")
       chat.Refresh
     Else
       ChatName = value
       ChatShared.AvoidDuplicates.Put(value.ToLowerCase, value)
       Dim chat As ABMChat = page.Component("conversation")
       chat.SetMyFrom(ChatName)
       chat.AddBubble("Server", "Welcome to ABMChat " & ChatName & "!", "The Server", "server", "server")
       chat.Refresh
       CallSubDelayed3(ChatShared, "NewConnection", Me, ABMPageId)
     End If
   End If

   Dim ChatInput As ABMInput = page.Component("ChatInput")
   ChatInput.Text = ""
   ChatInput.Refresh
End Sub

public Sub NewMessage(bubble As ABMChatBubble)
   Dim chat As ABMChat = page.Component("conversation")
   chat.AddBubble2(bubble)
   chat.Refresh
   chat.ScrollToBottom   ' scroll to the end of the chat
End Sub

public Sub IsTyping(pageID As String, typeBool As Boolean)
   Dim chat As ABMChat = page.Component("conversation")
   If pageID <> ABMPageId Then
     If typeBool = False Then
       chat.ThemAreTyping(False, "") 'hide the 'is typing' bubble
     Else
       chat.ThemAreTyping(True, "") ' show the 'is typing' bubble if not yet shown
     End If
     chat.Refresh
     chat.ScrollToBottom   ' scroll to the end of the chat
   End If
End Sub

public Sub CurrentConversation(LastMessages As List)
   If LastMessages.Size > 0 Then
     Dim chat As ABMChat = page.Component("conversation")
     chat.SetConversation(LastMessages)
     chat.Refresh
     chat.ScrollToBottom   ' scroll to the end of the chat
   End If
End Sub

So, there you have it. A complete modern looking multichat webapp that runs on all platforms in just about 150 lines of code!

Alwaysbusy

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