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Bind Javascript to textbox after ajax postbak?

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Ajax
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Jamal Roshan
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Jamal Roshan asked on 17 May 2012, 12:00 PM
I using a javascript for type farsi (persian) language in textbox field. I add [lang="fa"] to textbox and include my java script file in aspx file
then i can type farsi in text box. but when i refresh or postback my page using radajaxpanel my script not working
see my code and please help me.

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<head runat="server">
    <title></title>
    <script src="FarsiType.js" type="text/javascript"></script>
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager ID="RadScriptManager1" runat="server">
        <scripts>
            <%--Needed for JavaScript IntelliSense in VS2010--%>
            <%--For VS2008 replace RadScriptManager with ScriptManager--%>
            <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js" />
            <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js" />
            <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQueryInclude.js" />
        </scripts>
    </telerik:RadScriptManager>
    <script type="text/javascript">
        //Put your JavaScript code here.
    </script>
    <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" BackgroundPosition="Top">
    </telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
        <ajaxsettings>
            <telerik:AjaxSetting AjaxControlID="button1" >
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="panel1" LoadingPanelID="RadAjaxLoadingPanel1" />
                </UpdatedControls>
            </telerik:AjaxSetting>
        </ajaxsettings>
    </telerik:RadAjaxManager>
    <asp:Button Text="refresh panel1" runat="server" ID="button1" />
    <asp:Panel ID="Panel1" runat="server" BackColor="Yellow">
        <p>
            panel1
        </p>
        textbox inside AjaxLoadingPanel:
        <asp:TextBox runat="server" lang="fa" ID="TextBox2" Font-Names="tahoma" />
        <br />
        <br />
    </asp:Panel>
    <p>
    </p>
    <hr />
    <asp:Panel ID="Panel2" runat="server" BackColor="Green">
        <p>
            panel2
        </p>
        textbox outside adAjaxLoadingPanel:
        <asp:TextBox ID="TextBox1" runat="server" lang="fa" Font-Names="tahoma" />
        <br />
        <br />
    </asp:Panel>
    <asp:Button Text="postback page" runat="server" ID="button2" />
    </form>
</body>
</html>

and my script file is : (Farsitype.js)
/*
FarsiType
Version: 1.3.6
 
This script developed to ease typing Farsi (Persian) in web forms where there is no Farsi Keyboard installed on a PC.
Works with Internet Explorer, FireFox, Opera and Chrome.
For more information and getting the using manual please visit the script website (http://www.farsitype.ir).
 
Copyright 2002-2011  Kaveh Ahmadi  (http://www.kavehahmadi.com, email: me@kavehahmadi.com).
Licensed under the GPL (http://www.opensource.org/licenses/gpl-license.php) license.
*/
 
// insertAdjacentHTML(), insertAdjacentText() and insertAdjacentElement() for Netscape 6/Mozilla by Thor Larholm me@jscript.dk
if (typeof HTMLElement!="undefined" && ! HTMLElement.prototype.insertAdjacentElement) {
    HTMLElement.prototype.insertAdjacentElement = function (where,parsedNode) {
        switch (where) {
            case 'beforeBegin':
                this.parentNode.insertBefore(parsedNode,this)
                break;
            case 'afterBegin':
                this.insertBefore(parsedNode,this.firstChild);
                break;
            case 'beforeEnd':
                this.appendChild(parsedNode);
                break;
            case 'afterEnd':
                if (this.nextSibling)
                    this.parentNode.insertBefore(parsedNode,this.nextSibling);
                else
                    this.parentNode.appendChild(parsedNode);
                break;
        }
    }
 
    HTMLElement.prototype.insertAdjacentHTML = function (where,htmlStr) {
        var r = this.ownerDocument.createRange();
        r.setStartBefore(this);
        var parsedHTML = r.createContextualFragment(htmlStr);
        this.insertAdjacentElement(where,parsedHTML)
    }
 
    HTMLElement.prototype.insertAdjacentText = function (where,txtStr) {
        var parsedText = document.createTextNode(txtStr)
        this.insertAdjacentElement(where,parsedText)
    }
}
 
var FarsiType = {
    // Farsi keyboard map based on Iran Popular Keyboard Layout
    farsiKey: [
        32, 33, 34, 35, 36, 37, 1548,   1711,
        41, 40, 215,    43, 1608,   45, 46, 47,
        48, 49, 50, 51, 52, 53, 54, 55,
        56, 57, 58, 1705,   44, 61, 46, 1567,
        64, 1616,   1584,   125,    1609,   1615,   1609,   1604,
        1570,   247,    1600,   1548,   47, 8217,   1583,   215,
        1563,   1614,   1569,   1613,   1601,   8216,   123,    1611,
        1618,   1573,   126,    1580,   1688,   1670,   94, 95,
        1662,   1588,   1584,   1586,   1740,   1579,   1576,   1604,
        1575,   1607,   1578,   1606,   1605,   1574,   1583,   1582,
        1581,   1590,   1602,   1587,   1601,   1593,   1585,   1589,
        1591,   1594,   1592,   60, 124,    62, 1617
    ],
    Type: true,
    counter: 0,
    ShowChangeLangButton: 1,    // 0: Hidden / 1: Visible
    KeyBoardError: 0,           // 0: Disable FarsiType / 1: Show Error
    ChangeDir: 2,           // 0: No Action / 1: Do Rtl-Ltr / 2: Rtl-Ltr button
    UnSupportedAction: 0        //0: Disable FarsiType / 1: Low Support
}
 
FarsiType.enable_disable = function(Dis) {
    var invis, obj;
     
    if (!Dis.checked)  {
        FarsiType.Type = true;
        disable = false;
        color = 'darkblue';
    } else {
        FarsiType.Type = false;
        disable = true;
        color = '#ECE9D8';
    }
 
    if (FarsiType.ShowChangeLangButton == 1) {
        for (var i=1; i<= FarsiType.counter; i++) {
            obj = document.getElementById('FarsiType_button_' + i);
            obj.disabled = disable;
            obj.style.backgroundColor = color;
        }
    }
}
 
FarsiType.Disable = function() {
    FarsiType.Type = false;
    var Dis = document.getElementById('disableFarsiType')
    if (Dis != null) {
        Dis.checked = true;
    }
 
    if (FarsiType.ShowChangeLangButton == 1) {
        for (var i=1; i<= FarsiType.counter; i++) {
            obj = document.getElementById('FarsiType_button_' + i);
            obj.disabled = true;
            obj.style.backgroundColor = '#ECE9D8';
        }
    }
}
 
FarsiType.init = function() {
 
    var Inputs = document.getElementsByTagName('INPUT');
    for (var i=0; i<Inputs.length; i++) {
        if (Inputs[i].type.toLowerCase() == 'text' && (Inputs[i].lang.toLowerCase() == 'fa' || Inputs[i].lang.toLowerCase() == 'fa-ir')) {
            FarsiType.counter++;
            new FarsiType.KeyObject(Inputs[i], FarsiType.counter);
        }
    }
 
    var Areas = document.getElementsByTagName('TEXTAREA');
    for (var i=0; i<Areas.length; i++) {
        if (Areas[i].lang.toLowerCase() == 'fa' || Areas[i].lang.toLowerCase() == 'fa-ir') {
            FarsiType.counter++;
            new FarsiType.KeyObject(Areas[i], FarsiType.counter);
        }
    }
     
    var Dis = document.getElementById('disableFarsiType')
    if (Dis != null) {
        FarsiType.enable_disable (Dis);
        Dis.onclick = new Function( "FarsiType.enable_disable (this);" )
    }
}
 
FarsiType.KeyObject = function(z,x) {
 
    GenerateStr = "";
    if (FarsiType.ShowChangeLangButton == 1) {
        GenerateStr = GenerateStr + "<input type='button' id=FarsiType_button_"+x+" style='border: none; background-color:darkblue; font-size:11; color:white; font-family:tahoma; padding: 1px; margin: 1px; width: auto; height: auto;' value='FA' /> ";
    }
    if (FarsiType.ChangeDir == 2) {
        GenerateStr = GenerateStr  + "<input type='button' id=FarsiType_ChangeDir_"+x+" style='border: none; background-color:darkblue; font-size:11; color:white; font-family:tahoma; padding: 1px; margin: 1px; width: auto; height: auto;' value='RTL' />"
    }
    z.insertAdjacentHTML("afterEnd", GenerateStr);
 
    if (FarsiType.ShowChangeLangButton == 1) {
        z.bottelm = document.getElementById ('FarsiType_button_' + x);
        z.bottelm.title = 'Change lang to english';
    }
    if (FarsiType.ChangeDir == 2) {
        z.Direlm = document.getElementById ('FarsiType_ChangeDir_' + x);
    }
 
    z.farsi = true;
    z.dir = "rtl";
    z.align = "right";
 
    z.style.textAlign = z.align;
    z.style.direction = z.dir;
 
    setSelectionRange = function(input, selectionStart, selectionEnd) {
        input.focus()
        input.setSelectionRange(selectionStart, selectionEnd)
    }
 
    ChangeDirection = function() {
        if (z.dir == "rtl") {
            z.dir = "ltr";
            z.align = "left";
            z.Direlm.value = "LTR";
            z.Direlm.title = "Change direction: Right to Left"
        } else {
            z.dir = "rtl";
            z.align = "right";
            z.Direlm.value = "RTL";
            z.Direlm.title = "Change direction: Left to Right"
        }
        z.style.textAlign = z.align;
        z.style.direction = z.dir;
        z.focus();
    }
 
    ChangeLang = function(e, ze) {
        if(ze)
            z = ze;
 
        if (FarsiType.Type) {
            if (z.farsi) {
                z.farsi = false;
                if (FarsiType.ShowChangeLangButton == 1) {
                    z.bottelm.value = "EN";
                    z.bottelm.title = 'Change lang to persian';
                }
                if (FarsiType.ChangeDir == 1) {
                    z.style.textAlign = "left";
                    z.style.direction = "ltr";
                }
            } else {
                z.farsi = true;
                if (FarsiType.ShowChangeLangButton == 1) {
                    z.bottelm.value = "FA";
                    z.bottelm.title = 'Change lang to english';
                }
                if (FarsiType.ChangeDir == 1) {
                    z.style.textAlign = "right";
                    z.style.direction = "rtl";
                }
            }
            z.focus();
        }
         
        if (e.preventDefault) e.preventDefault();
        e.returnValue = false;
        return false;
    }
 
    Convert = function(e) {
 
        if (e == null)
            e = window.event;
 
        var key = e.which || e.charCode || e.keyCode;
        var eElement = e.target || e.originalTarget || e.srcElement;
 
        if (e.ctrlKey && key == 32) {
            ChangeLang(e, z);
        }
 
        if (FarsiType.Type) {
            if (
                (e.charCode != null && e.charCode != key) ||
                (e.which != null && e.which != key) ||
                (e.ctrlKey || e.altKey || e.metaKey) ||
                (key == 13 || key == 27 || key == 8)
            ) return true;
 
            //check windows lang
            if (key > 128) {
                if (FarsiType.KeyBoardError == 0) {
                    FarsiType.Disable();
                } else {
                    alert("Please change your windows language to English");
                    return false;
                }
            }
 
            // If Farsi
            if (FarsiType.Type && z.farsi) {
 
                //check CpasLock
                if ((key >= 65 && key <= 90&& !e.shiftKey) || (key >= 97 && key <= 122 ) && e.shiftKey) {
                    alert("Caps Lock is On. To prevent entering farsi incorrectly, you should press Caps Lock to turn it off.");
                    return false;
                }
 
                // Shift-space -> ZWNJ
                if (key == 32 && e.shiftKey)
                    key = 8204;
                else
                    key = FarsiType.farsiKey[key-32];
 
                key = typeof key == 'string' ? key : String.fromCharCode(key);
 
                // to farsi
                try {
                 
                    var docSelection = document.selection;
                    var selectionStart = eElement.selectionStart;
                    var selectionEnd = eElement.selectionEnd;
 
                    if (typeof selectionStart == 'number') {
                        //FOR W3C STANDARD BROWSERS
                        var nScrollTop = eElement.scrollTop;
                        var nScrollLeft = eElement.scrollLeft;
                        var nScrollWidth = eElement.scrollWidth;
     
                        eElement.value = eElement.value.substring(0, selectionStart) + key + eElement.value.substring(selectionEnd);
                        setSelectionRange(eElement, selectionStart + key.length, selectionStart + key.length);
         
                        var nW = eElement.scrollWidth - nScrollWidth;
                        if (eElement.scrollTop == 0) { eElement.scrollTop = nScrollTop }
                    } else if (docSelection) {
                        var nRange = docSelection.createRange();
                        nRange.text = key;
                        nRange.setEndPoint('StartToEnd', nRange);
                        nRange.select();
                    }
     
                } catch(error) {
                    try {
                        // IE
                        e.keyCode = key
                    } catch(error) {
                        try {
                            // OLD GECKO
                            e.initKeyEvent("keypress", true, true, document.defaultView, false, false, true, false, 0, key, eElement);
                        } catch(error) {
                            //OTHERWISE
                            if (FarsiType.UnSupportedAction == 0) {
                                alert('Sorry! no FarsiType support')
                                FarsiType.Disable();
                                var Dis = document.getElementById('disableFarsiType')
                                if (Dis != null) {
                                    Dis.disabled = true;
                                }
                                return false;
                            } else {
                                eElement.value += key;                 
                            }
                        }
                    }
                }
 
                if (e.preventDefault)
                    e.preventDefault();
                e.returnValue = false;
            }
        }
        return true;
    }
 
    if (FarsiType.ShowChangeLangButton == 1) { z.bottelm.onmouseup = ChangeLang; }
    if (FarsiType.ChangeDir == 2) { z.Direlm.onmouseup = ChangeDirection; }
    z.onkeypress = Convert;
}
 
if (window.attachEvent) {
    window.attachEvent('onload', FarsiType.init)
} else if (window.addEventListener) {
    window.addEventListener('load', FarsiType.init, false)
}

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Asked by
Jamal Roshan
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