Posts Tagged ‘text’

Using client side JavaScript is an efficient way to validate the user input in web forms. When there are many fields in the form, the JavaScript validation becomes too complex.

The JavaScript class presented here makes the form validations many times easier.

Contents

  1. Download the JavaScript form validation script
  2. Using the form validation script
  3. Adding a custom validation
  4. Table of Validation Descriptors
  5. Showing the form validation errors next to the element
  6. ‘Conditional’ form validations
  7. Form validation without coding!

How to add JavaScript Form Validation quickly

First, download the JavaScript form validation script here.
The zip file contains the javascript file, examples.

The script has a catalog of almost all the common validation types built-in.

The idea is to create a set of “validation descriptors” associated with each element in a form. The “validation descriptor” is nothing but a string specifying the type of validation to be performed.

Each field in the form can have zero one or more validations. For example, you can have an input field that should not be empty, should be less than 25 chars and should be alpha-numeric.

In other words, in order to validate a field, you just associate a set of validation descriptors for each input field in the form.

Just Choose Validations!
Simfatic Forms is a feature-rich web form maker.
You just have to choose the validations. More info & downloads

Using the form validation script

  1. Include gen_validatorv4.js in your html file just before closing the HEAD tag
<script src="gen_validatorv4.js" type="text/javascript"></script>
</head>
  1. Just after defining your form, create a Validator() object passing the name of the form
<form id='myform' action="">
 <!----Your input fields go here -->
 </form>
<script type="text/javascript">
 var frmvalidator  = new Validator("myform");
                     //where myform is the name/id of your form
  1. Now, add the validations required
frmvalidator.addValidation("FirstName","req","Please enter your First Name");

The format of the addValidation() function is:

frmvalidator.addValidation(Field Name, Validation Descriptor, Error String);

See below for the complete list of validation descriptors. The third parameter ( Error string ) is optional.
You can add any number of validations to a field.

frmvalidator.addValidation("FirstName","req","Please enter your First Name");
frmvalidator.addValidation("FirstName","maxlen=40",
                                          "Max length for FirstName is 40");

Example

Here is a complete example:

<form action="" id="myform" >
<p>
    <label for='FirstName'>First Name:</label>
    <input type="text" id="FirstName" name="FirstName" />
</p>
<p>
    <label for='LastName'>Last Name:</label>
    <input type="text" id="LastName" name="LastName" />
</p>
<p>
    <label for='EMail'>EMail:</label>
    <input type="text" id="EMail" name="EMail" />
</p>
<p>
    <label for='Phone'>Phone:</label>
    <input type="text" id="Phone" name="Phone" />
</p>
<p>
    <label for='Address'>Address:</label>
    <textarea cols="20" rows="5" id="Address" name="Address"></textarea>
</p>
<p>
    <label for='Country'>Country:</label>
    <select id="Country"  name="Country">
        <option value="000" selected="selected">[choose yours]</option>
        <option value="008">Albania</option>
        <option value="012">Algeria</option>
        <option value="016">American Samoa</option>
        <option value="020">Andorra</option>
        <option value="024">Angola</option>
        <option value="660">Anguilla</option>
        <option value="010">Antarctica</option>
        <option value="028">Antigua And Barbuda</option>
        <option value="032">Argentina</option>
        <option value="051">Armenia</option>
        <option value="533">Aruba</option>
    </select>
</p>
<p>
    <input type="submit" name="submit" value="Submit">
</p>
</form>
<script  type="text/javascript">
 var frmvalidator = new Validator("myform");
 frmvalidator.addValidation("FirstName","req","Please enter your First Name");
 frmvalidator.addValidation("FirstName","maxlen=20",
        "Max length for FirstName is 20");
 frmvalidator.addValidation("LastName","req");
 frmvalidator.addValidation("LastName","maxlen=20");
 frmvalidator.addValidation("Email","maxlen=50");
 frmvalidator.addValidation("Email","req");
 frmvalidator.addValidation("Email","email");
 frmvalidator.addValidation("Phone","maxlen=50");
 frmvalidator.addValidation("Phone","numeric");
 frmvalidator.addValidation("Address","maxlen=50");
 frmvalidator.addValidation("Country","dontselect=000");
</script>

Some Additional Notes

  • The form validators should be created only after defining the HTML form (only after the tag. )
  • Your form should have a distinguished name. If there are more than one form in the same page, you can add validators for each of them. The names of the forms and the validators should not clash.
  • You can’t use the javascript onsubmit event of the form if it you are using this validator script. It is because the validator script automatically overrides the onsubmit event. If you want to add a custom validation, see the section below

Adding a custom validation

If you want to add a custom validation, which is not provided by the validation descriptors, you can do so. Here are the steps:

  1. Create a javascript function which returns true or false depending on the validation
function DoCustomValidation()
{
  var frm = document.forms["myform"];
  if(frm.pwd1.value != frm.pwd2.value)
  {
    sfm_show_error_msg('The Password and verified password does not match!',frm.pwd1);
    return false;
  }
  else
  {
    return true;
  }
}

sfm_show_error_msg() function displays the error message in your chosen style. The first parameter is the error message and the second parameter is the input object.

  1. Associate the validation function with the validator object.
frmvalidator.setAddnlValidationFunction("DoCustomValidation");

The custom validation function will be called automatically after other validations.

If you want to do more than one custom validations, you can do all those validations in the same function.

function DoCustomValidation()
{
  var frm = document.forms["myform"];
  if(false == DoMyValidationOne())
  {
    sfm_show_error_msg('Validation One Failed!');
    return false;
  }
  else
  if(false == DoMyValidationTwo())
  {
    sfm_show_error_msg('Validation Two Failed!');
    return false;
  }
  else
  {
    return true;
  }
}

where DoMyValidationOne() and DoMyValidationTwo() are custom functions for validation.

Clear All Validations

In some dynamically programmed pages, it may be required to change the validations in the form at run time. For such cases, a function is included which clears all validations in the validator object.

frmvalidator.clearAllValidations();

This function call clears all validations you set.

Set focus on validation failure

By default, if there is a validation error, the focus is set on the input element having the error. You can disable this behavior by calling:

frmvalidator.EnableFocusOnError(false);

Table of Validation Descriptors

Validation Descriptor Usage
required or
req
The field should not be empty.Note that this validation if for fields like Textbox and multi-line text box. For ‘selections’ like drop down and radio group, use an appropriate validation like ‘dontselect’ or ‘selone_radio’.
maxlen=??? or
maxlength=???
Limits the length of the input.
For example, if the maximum size permitted is 25, give the validation descriptor as “maxlen=25″
minlen=??? or
minlength=???
Checks the length of the entered string to the required minimum.
Example “minlen=5″
alphanumeric or
alnum
The input can contain alphabetic or numeric characters only.
(Note that space or punctuation also are not allowed since those characters are not alpha numeric)
alphanumeric_space
alnum_s
Allows only alphabetic, numeric and space characters
num
numeric
Allow numbers only
alpha
alphabetic
Allow only alphabetic characters.
alpha_s
alphabetic_space
Allows alphabetic and space characters
email Validates the field to be a proper email address.
(Note, However that the validation can’t check whether the email address exists or not)
lt=???
lessthan=???
Verify the data to be less than the value passed. Valid only for numeric fields.
Example: if the value should be less than 1000 give validation description as “lt=1000″
gt=???
greaterthan=???
Verify the data to be greater than the value passed. Valid only for numeric fields.
Example: if the value should be greater than 10 give validation description as “gt=10″
regexp=??? Match the input with a regular expression.
Example: “regexp=^[A-Za-z]{1,20}$” allow up to 20 alphabetic characters.
dontselect=?? This validation descriptor is valid only for drop down lists. The drop down select list boxes usually will have one item saying ‘Select One’ (and that item will be selected by default). The user should select an option other than this ‘Select One’ item.
If the valueof this default option is ’000′, the validation description should be “dontselect=000″Dropdown box with default selected

Drop down list source

dontselectchk=?? This validation descriptor is only for check boxes. The user should not select the given check box. Provide the value of the check box instead of ??
For example, dontselectchk=on
shouldselchk=?? This validation descriptor is only for check boxes. The user should select the given check box. Provide the value of the check box instead of ??
For example, shouldselchk=on
selone_radio One of the radio buttons should be selected.
Example:

chktestValidator.addValidation("Options","selone");
Compare two input elements
eqelmnt=??? Compare two input elements. For example: password and confirm password. Replace ??? with the name of the other input element.
Example:

frmvalidator.addValidation("confpassword","eqelmnt=password",
 "The confirmed password is not same as password");
neelmnt=??? The value should not be equal to the other input element
Example:

frmvalidator.addValidation("password","neelmnt=username",
"The password should not be same as username");
ltelmnt=??? The input should be less than the other input. Give the name of the other input instead of ???
leelmnt=??? The input should be less than or equal to the other input. Give the name of the other input instead of ???
gtelmnt=??? The input should be greater than the other input. Give the name of the other input instead of ???
geelmnt=??? The input should be greater than or equal to the other input. Give the name of the other input instead of ???

Go to the second part of this post to learn about the advanced features of this validation script.

The example below illustrates how you can convert the HTML of RadEditor to PDF format using an HTML2PDF convertor tool of Tall Components. For a live demo, please go to http://www.tallcomponents.com/cp0803.aspx

 

ASPX code

<form id=”Form1″ method=”post” runat=”server”>
    RadEditor id=”RadEditor1″ Runat=”server”>
    <asp:button id=”showPDF” runat=”server” Text=”Show PDF”></asp:button>

C# code

private void showPDF_Click(object sender, EventArgs e)
{
    string html = “<html>” + RadEditor1.Html + “</html>”;
    TallComponents.PDF.Layout.Document document = new TallComponents.PDF.Layout.Document();
    TallComponents.PDF.Layout.Section section = document.Sections.Add();
    TallComponents.PDF.Layout.HtmlParagraph htmlParagraph = new TallComponents.PDF.Layout.HtmlParagraph();
    htmlParagraph.FontPath = “fonts“;
    htmlParagraph.Text = html;
    section.Paragraphs.Add( htmlParagraph );
    Response.Clear();
    document.Write( Response );
    Response.End();
}

VB.NET code

Private Sub showPDF_Click(ByVal sender As Object, ByVal e As EventArgs)
 Dim html As String = “<html>” + RadEditor1.Html + “</html>”
 Dim document As TallComponents.PDF.Layout.Document = New TallComponents.PDF.Layout.Document
 Dim section As TallComponents.PDF.Layout.Section = document.Sections.Add
 Dim htmlParagraph As TallComponents.PDF.Layout.HtmlParagraph = New TallComponents.PDF.Layout.HtmlParagraph
 htmlParagraph.FontPath = “fonts”
 htmlParagraph.Text = html
 section.Paragraphs.Add(htmlParagraph)
 Response.Clear
 document.Write(Response)
 Response.End
End Sub

ASPX code

<form id=”Form1″ method=”post” runat=”server”>
    ScriptManager ID=”ScriptManager1″ runat=”server” />
    <telerik:RadEditor id=”RadEditor1″ Runat=”server”>
    <asp:button id=”showPDF” runat=”server” Text=”Show PDF”></asp:button>
</form>

C# code

private void showPDF_Click(object sender, EventArgs e)
{
    string html = “<html>” + RadEditor1.Content + “</html>”;
    TallComponents.PDF.Layout.Document document = new TallComponents.PDF.Layout.Document();
    TallComponents.PDF.Layout.Section section = document.Sections.Add();
    TallComponents.PDF.Layout.HtmlParagraph htmlParagraph = new TallComponents.PDF.Layout.HtmlParagraph();
    htmlParagraph.FontPath = “fonts”;
    htmlParagraph.Text = html;
    section.Paragraphs.Add( htmlParagraph );
    Response.Clear();
    document.Write( Response );
    Response.End();
}

VB.NET code

Private Sub showPDF_Click(ByVal sender As Object, ByVal e As EventArgs)
 Dim html As String = “<html>” + RadEditor1.Content+ “</html>”
 Dim document As TallComponents.PDF.Layout.Document = New TallComponents.PDF.Layout.Document
 Dim section As TallComponents.PDF.Layout.Section = document.Sections.Add
 Dim htmlParagraph As TallComponents.PDF.Layout.HtmlParagraph = New TallComponents.PDF.Layout.HtmlParagraph
 htmlParagraph.FontPath = “fonts”
 htmlParagraph.Text = html
 section.Paragraphs.Add(htmlParagraph)
 Response.Clear
 document.Write(Response)
 Response.End
End Sub

In the “Article Files” section, there is attached a sample project with RadEditor 6.1 demonstrating the described functionality.

Article Links

Fantastic JavaScript 3D Libraries


Ever imagined if the tiny JavaScript code could render amazing out of the box 3D? Then be ready to enjoy wonderful 3D effects in simple JavaScript code. These JavaScript 3D Libraries let you render smooth yet attractive 3D effects with great ease.

JS3D – The 3d Javascript Graphics Layer

JS3D is a library which allows you to have interactive 3d objects on your website, such as the spinning cube at the top of the page. The 3d effect is created using actual text, try selecting the text on the cube.

JavaScript Raytracer

The JavaScript Raytracer is a 3D rendering engine written entirely in JavaScript. It implements the raytracing algorithm to create images of mathematically defined shapes such as spheres.

3d graphics in JavaScript

Just because I do not do enough silly things with JavaScript already and a raytracer, here are some 3d graphics done with just JavaScript. You should see a TIE fighter rotating, and moving left and right.

Realtime 3D Triangles in Javascript

A wonderful real time 3d triangle generated using javascript.

Javascript Wolfenstein 3D

This a Javascript implementation of id Software 1992 game, Wolfenstein 3D. Should work in all canvas-enabled browsers, that is it means no Internet Explorer.

JavaScript-Powered Web 3D

JavaScript is the standard scripting language of Web development, and a far larger number of people know JavaScript than Java. JavaScript is easy to learn and fun to experiment with. No compiler or development environment is required. So lets learn how to create awesome 3D in JacaScript.

Incredible JavaScript and Canvas 3D demos from Japan

Mr. Satoshi Ueyama hacked out the new era of JavaScript 3D tech by unveiling the real of Google Chrome s power. Satoshi is one of the great JavaScript hackers in Japan. He has introduced the brand new JavaScript technique using Canvas for 3D on his post.

C3DL – Canvas 3D JavaScript Library

The Canvas 3D JS Libary (C3DL) is a javascript library that will make it easier to write 3D applications using canvas 3d. It will provide a set of math, scene, and 3d object classes to make the canvas more accessible for developers that want to develop 3D content in browser but do not want to have to deal in depth with the 3D math needed to make it work.

3D Javascript Chess

This is a work-in-progress 3D Javascript chess game, rendered using the canvas element and this Javascript 3D renderer. Special chess moves are not implemented yet and the interface needs a bit of work.

SVG-VML-3D Javscript Libraries

SVG-VML-3D is a free JavaScript library which can be used to draw and manipulate 3D objects in html pages by using SVG or VML. The JavaScript code which has to be typed into the html page to define the Scene (3D Objects, Viewer Position, Light.) is the same for SVG and VML.

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JavaScript variable =”<%=   there is your java code     %>”;

like …….

var companyId:<%=request.getParameter();%>

 

Conversion PDF to Byte and Vice verse

Posted: January 13, 2012 in Random Posts
Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Simple conversion easily enjoy the word of JAVA……………….

public static byte[] convertPDFToByteArray(String sourcePath) {
byte[] bytes=null;
InputStream inputStream;

File file = new File(sourcePath);

try {
inputStream = new FileInputStream(file);
bytes = new byte[(int)file.length()];
int read = inputStream.read(bytes);
} catch (IOException ex) {
Logger.getLogger(

DesktopApplication3View.class.getName()).log(Level.SEVERE, null, ex);
}return bytes;

}

public void convertByteArrayToPDF(String sourcePath,byte[] bytes) {
OutputStream out;
try {
out = new FileOutputStream(sourcePath);
try {
out.write(bytes);
out.close();
} catch (IOException ex) {
Logger.getLogger(DesktopApplication3View.class.getName()).log(Level.SEVERE, null, ex);
}
} catch (FileNotFoundException ex) {
Logger.getLogger(DesktopApplication3View.class.getName()).log(Level.SEVERE, null, ex);
}

}

Java PDF Generation with IText

Posted: January 4, 2012 in Random Posts
Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Multi Site Keyword Extractor Tool
Analyze Keywords

First Method creates ur PDF File and Second Download your file from the relative Path in JSF

public String mypdfGeneratorAmd() {
// fileCreation();
List mylist = this.getListDfAmd();
if (mylist != null) {
Document pdf = new Document();
Date today = new Date();
ServletContext servletContext = null;
// (ServletContext)
// FacesContext.getCurrentInstance().getExternalContext().getContext();
// String logo1 = servletContext.getRealPath(“”) + “/” +
// “WebContent”
// + “/” + “reports” + “/”;

String fileName = “AssistedMaintenanceDocking.pdf”;

File f;
String fileTitle = “AssistedMaintenanceDocking ”
+ (new Date().toString());
servletContext = (ServletContext) FacesContext.getCurrentInstance()
.getExternalContext().getContext();
String logo = servletContext.getRealPath(“”) + “/” + “images” + “/”
+ “user-image.jpg”;

int rowCount = mylist.size();
PdfPTable t = new PdfPTable(5);
Paragraph title1 = new Paragraph();
try {
Image img = Image.getInstance(logo);
String mypdfFile = servletContext.getRealPath(“”) + “/”
+ “reports” + “/” + “DefectAndHistory.pdf”;
f = new File(mypdfFile);
// “/home/shussain/workspace2/DNRMS-PMSA/WebContent/reports/”+
// “AssistedMaintenanceDocking.pdf”);
if (!f.exists()) {
try {
f.createNewFile();
System.out
.println(“New file ‘AssistedMaintenanceDocking.pdf’ has been created to the current directory”);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} else {
System.out
.println(“File ‘AssistedMaintenanceDocking.pdf’ Already in the current directory”);
}
PdfWriter.getInstance(pdf, new FileOutputStream(f));
pdf.addTitle(fileTitle);
pdf.setMargins((float) 1.5, (float) 1.5, 30, 30);
pdf.addAuthor(session.getAttribute(“sessionUserName”)
.toString());
pdf.addCreationDate();
pdf.addCreator(session.getAttribute(“sessionUserName”)
.toString());
pdf.addSubject(“Assisted Maintenance Docking”);
pdf.open();

title1.add(new Paragraph(“Assisted Maintenance Docking” + “\n”
+ (new Date().toString()), FontFactory.getFont(
FontFactory.HELVETICA, 20, Font.BOLD,
new Color(0, 0, 0))));
title1.setAlignment(“CENTER”);
Chapter chapter1 = new Chapter(title1, 1);
chapter1.setNumberDepth(0);

pdf.add(chapter1);
addEmptyLine(title1, 2);
Phrase phraseOfImage = new Phrase();
phraseOfImage.add(new Chunk(img, 18, -18));
pdf.add(phraseOfImage);

pdf.add(Chunk.NEWLINE);
pdf.add(Chunk.NEWLINE);

t.setWidthPercentage(90);
Phrase phrase1 = null;

float[] columnWidths = { 200, 200, 200, 200, 200 };
t.setWidths(columnWidths);

PdfPCell c1 = new PdfPCell(new Phrase(“Ship/Unit”,
FontFactory.getFont(FontFactory.HELVETICA, 12,
Font.BOLD, Color.BLACK)));

c1.setBackgroundColor(Color.gray);
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
t.addCell(c1);

c1 = new PdfPCell(new Phrase(“Last AMD”, FontFactory.getFont(
FontFactory.HELVETICA, 12, Font.BOLD, Color.BLACK)));
c1.setBackgroundColor(Color.gray);
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
t.addCell(c1);

c1 = new PdfPCell(new Phrase(“AMD Plan”, FontFactory.getFont(
FontFactory.HELVETICA, 12, Font.BOLD, Color.BLACK)));
c1.setBackgroundColor(Color.gray);
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
t.addCell(c1);

c1 = new PdfPCell(new Phrase(“Duration”, FontFactory.getFont(
FontFactory.HELVETICA, 12, Font.BOLD, Color.BLACK)));
c1.setBackgroundColor(Color.gray);
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
t.addCell(c1);

c1 = new PdfPCell(new Phrase(“Package”, FontFactory.getFont(
FontFactory.HELVETICA, 12, Font.BOLD, Color.BLACK)));
c1.setBackgroundColor(Color.gray);
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
t.addCell(c1);

t.setHeaderRows(1);

for (int i = 0; i < rowCount; i++) {

dfamd = (DfAmd) mylist.get(i);
t.addCell(dfamd.getDfShipUnits().getShip());

t.addCell(dfamd.getLastAmd());
t.addCell(dfamd.getAmdPlan());
t.addCell(dfamd.getDuration());
t.addCell(dfamd.getPackage_());

}

pdf.add(t);

// section1.add(t);
pdf.setPageSize(PageSize.A4);

pdf.add(pdf.getPageSize());

} catch (DocumentException e) {
System.err.println(e.getMessage());
} catch (IOException ex) {
System.err.println(ex.getMessage());
}
pdf.close();
try {
downloadPDF();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} else {
msging = new FacesMessage(FacesMessage.SEVERITY_WARN, "Error",
"Your Report Is Empty Please Search Some Data");
// msging ="Your Report Is Empty Please Search Some Data";

}
FacesContext.getCurrentInstance().addMessage(null, msging);
return "success";
}

// put new line after specific Element
private static void addEmptyLine(Paragraph paragraph, int number) {
for (int i = 0; i 0) {
output.write(buffer, 0, length);
}

// Finalize task.
output.flush();
} finally {
// Gently close streams.
close(output);
close(input);
}

facesContext.responseComplete();
}

private static void close(Closeable resource) {
if (resource != null) {
try {
resource.close();
} catch (IOException e) {

e.printStackTrace();
}
}
}