package splppp0001; /** Class HTMLBody helps the programmer to build the body of an HTML page. Only a subset of possible tags and of their options is supported. */ public class HTMLBody { private String body; private static final String prologue = " \n" + "Dipartimento di Informatica - Università degli Studi di Torino \n" + "\n" + "\n" + "
\n" + "
\n" + "\n" + "
\n" + "
 
 "; private static final String epilogue = "

\n" + "\n" + "\n" + "\n" + "
\n" + "\n" + "\"Home\n" + "\n" + "[Presentazione]\n" + "[Info per studenti]\n" + "[Info per aziende]\n" + "[Bacheca]\n" + "
\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "
\n" + "" + "\n" + "
\n" + "
\n" + "\n" + "\n"; private static final String iniziotabella = "
\n" + "\n" + "\n" + "\n" + "\n" + "
\n"; private static final String finetabella = "
\n" + "
\n"; /** Constructor. */ public HTMLBody() { body = ""; } /** It inserts in an HTML page body a tag
followed by the text contained in 'txt'. */ public void addLine(String txt) { body += "\n
\n" + txt; } /** It inserts a new paragraph containing the text in 'txt'. */ public void addParagraph(String txt) { body += "\n

\n" + txt; } /** It formats the text in 'txt' by sorrounding it with tags belonging to the family

...

or

...

, etc. The particular tag is chosen according to the value of 'dim'. So if 'dim=1'

...

will be chosen. The so formatted text is added to the page body. */ public void addHeading(int dim, String txt) { body += "\n " + txt + "\n"; } /** It is used to begin an ordered list. The list is to be ended using method 'endOL'. */ public void beginOL() { body += "\n
    "; } /** It is used to end an ordered list, that was begun by using method 'beginOL'. */ public void endOL() { body += "\n
"; } /** It is used to begin an unordered list. The list is to be ended using method 'endUL'. */ public void beginUL() { body += "\n"; } /** It is used to to add items to an (un)ordered list. The text corresponding to the item is passed as an argument of the method when this is called. */ public void addListItem(String item) { body += "\n
  • " + item + "
    • "; } /** This is used to add some generic HTML code to a page body. */ public void appendHTML(String html) { body += html; } /** This method is used to begin a FORM definition. The FORM definition is to be ended by using 'endForm'. The two arguments correspond respectively to the values that will be given to the tag modifiers 'method' and 'action' of the tag
    . */ public void beginForm(String md, String act) { body += "\n"; body += "\n"; } /** This is used in order to add a Radio Button to an HTML form. The first argument is the name that identifies the set of alternatives to which the button belongs, The second argument is the value that is assigned to the tag option 'value'. The last argument is a label that is added to the radio button so that the user can understand its meaning. */ public void addRadioBut(String group, String value, String label) { body += "\n\n" + ""; } /** This is used in order to add a Checkbox to an HTML form. The tag modifiers 'name' and 'value' are respectivelly assigned the values of the first and second argument of this method. The third argument is a label that is added to the checkbox so that the user can understand its meaning. */ public void addCheckBox(String name, String value, String label) { body += "\n\n"; } /** This is used in order to add an to an HTML form. The value of 'label' is used to describe to the final user what kind of information (s)he has to insert in the text field. The values of the second and of the third argument are used to assign a value to the tag modifiers 'value' and 'size' of tag . */ public void addInputText(String label, String name, int size) { body += "\n\n"; } /** This method is used to end a FORM definition. The FORM definition is to be started by using 'beginForm'. It automatically adds buttons 'submit' and 'reset'. */ public void endForm() { body += "\n"; body += "\n
    " + label + "
    " + label + "
    " + label + ":
    \n"; body += "\n\n
    \n
    "; } /** This method inserts a form that consists of a single button. 'act' identifies the action that will occur when a click on the button occurs; the 'method' will always be set to 'post'. 'label' will be the button label and 'name' will be the value of the tag modifier 'name' of the tag that is used to define the button. */ public void addButton(String act, String label, String name) { body += "\n
    "; body += "\n"; body += "\n"; body += "\n
    \n
    \n
    "; } /** This method is used to compose the HTML page body. */ public String toString() { return prologue + iniziotabella + body + finetabella + epilogue; } }