/****************************************** This file is part of Bangla Unicode Web Tools. Bangla Unicode Web Tools is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. Bangla Unicode Web Tools is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Bangla Unicode Web Tools; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Contains common utilities to: 1. Insert and Remove character into text area. 2. Hide and show any div element 3. Determine bangla character category 4. Find equivalent kar to sorborno mapping Author: S M Mahbub Murshed Copyright: S M Mahbub Murshed Email: udvranto@yahoo.com Version: 1.2.0 Date: September 06, 2006, XX:XX GMT *******************************************/ /****************************************** ****************************************** General utility to insert text into the cursor position ****************************************** *******************************************/ /****************************************** Function to insert a character into the text area. \param text The string or character to insert Coded by : Arup Kamal Date: August 26, 2006 (approx) *******************************************/ function Insert(field, text) { if (document.selection) { field.focus(); sel = document.selection.createRange(); sel.text = text; sel.collapse(true); sel.select(); } else if (field.selectionStart || field.selectionStart == '0') { var startPos = field.selectionStart; var endPos = field.selectionEnd; var scrollTop = field.scrollTop; startPos = (startPos == -1 ? field.value.length : startPos ); field.value = field.value.substring(0, startPos) + text + field.value.substring(endPos, field.value.length); field.focus(); field.selectionStart = startPos + text.length; field.selectionEnd = startPos + text.length; field.scrollTop = scrollTop; } else { var scrollTop = field.scrollTop; field.value += value; field.focus(); field.scrollTop = scrollTop; } } // end function Insert /****************************************** Function to delete a set of character and insert a set of characters into the text area. \param value The string or character to insert \param len Number of characters to delete from current cursor position Coded by : Arup Kamal Date: August 26, 2006 (approx) *******************************************/ function RemoveNInsert(field, value, len) { if (document.selection) { field.focus(); sel = document.selection.createRange(); if (field.value.length >= len) { sel.moveStart('character', -1*(len)); } sel.text = value; sel.collapse(true); sel.select(); } else if (field.selectionStart || field.selectionStart == 0) { field.focus(); var startPos = field.selectionStart-len; var endPos = field.selectionEnd; var scrollTop = field.scrollTop; startPos = (startPos == -1 ? field.value.length : startPos ); field.value = field.value.substring(0, startPos) + value + field.value.substring(endPos, field.value.length); field.focus(); field.selectionStart = startPos + value.length; field.selectionEnd = startPos + value.length; field.scrollTop = scrollTop; } else { var scrollTop = field.scrollTop; field.value += value; field.focus(); field.scrollTop = scrollTop; } } // end function RemoveNInsert /****************************************** Function to detect caps lock Returns true if caps lock is on \param e The keypress event Coded by : http://www.howtocreate.co.uk/jslibs/htmlhigh/capsDetect.html Date: Sepetember 11, 2006 *******************************************/ function capsDetect( e ) { if( !e ) e = window.event; if( !e ) return false; //what (case sensitive in good browsers) key was pressed var theKey = e.which ? e.which : ( e.keyCode ? e.keyCode : ( e.charCode ? e.charCode : 0 ) ); //was the shift key was pressed var theShift = e.shiftKey || ( e.modifiers && ( e.modifiers & 4 ) ); //bitWise AND //if upper case, check if shift is not pressed. if lower case, check if shift is pressed return ( ( theKey > 64 && theKey < 91 && !theShift ) || ( theKey > 96 && theKey < 123 && theShift ) ); } /****************************************** General utility to show or hide a div element *******************************************/ /****************************************** Hides an html div element \param id the id of the html element Coded by : (Lost the URL where I obtained it from) Date: September 05, 2006 *******************************************/ function HideDIV(id) { //safe function to hide an element with a specified id if (document.getElementById) { // DOM3 = IE5, NS6 document.getElementById(id).style.display = 'none'; } else { if (document.layers) { // Netscape 4 document.id.display = 'none'; } else { // IE 4 document.all.id.style.display = 'none'; } } } // end function hidediv /****************************************** Shows an html div element \param id the id of the html element Coded by : (Lost the URL where I obtained it from) Date: September 05, 2006 *******************************************/ function ShowDIV(id) { //safe function to show an element with a specified id if (document.getElementById) { // DOM3 = IE5, NS6 document.getElementById(id).style.display = 'block'; } else { if (document.layers) { // Netscape 4 document.id.display = 'block'; } else { // IE 4 document.all.id.style.display = 'block'; } } } // end function showdiv /****************************************** ******************************************* Bangla unicode utility ******************************************* *******************************************/ /****************************************** Determines whether the unicode character is an bangla digit character or not. \param CUni The Unicode character Coded by : S M Mahbub Murshed Date: August 28, 2006 *******************************************/ function IsBanglaDigit(CUni) { if(CUni=='০' || CUni=='১' || CUni=='২' || CUni=='৩' || CUni=='৪' || CUni=='৫' || CUni=='৬' || CUni=='৭' || CUni=='৮' || CUni=='৯') return true; return false; } // end function IsBanglaDigit /****************************************** Determines whether the unicode character is a bangla pre kar character or not. Pre kar character are appended BEFORE a banjonborno or juktakhor character after rendering. \param CUni The Unicode character Coded by : S M Mahbub Murshed Date: August 28, 2006 *******************************************/ function IsBanglaPreKar(CUni) { if(CUni=='ি' || CUni=='ৈ' || CUni=='ে' ) return true; return false; } // end function IsBanglaPreKar /****************************************** Determines whether the unicode character is a bangla post kar character or not. Post kar character are appended AFTER a banjonborno or juktakhor character after rendering. \param CUni The Unicode character Coded by : S M Mahbub Murshed Date: August 28, 2006 *******************************************/ function IsBanglaPostKar(CUni) { if(CUni == 'া' || CUni=='ো' || CUni=='ৌ' || CUni=='ৗ' || CUni=='ু' || CUni=='ূ' || CUni=='ী' || CUni=='ৃ') return true; return false; } // end function IsBanglaPostKar /****************************************** Determines whether the unicode character is a bangla kar character or not. Its a super set or Pre and Post kars. \param CUni The Unicode character Coded by : S M Mahbub Murshed Date: August 28, 2006 *******************************************/ function IsBanglaKar(CUni) { if(IsBanglaPreKar(CUni) || IsBanglaPostKar(CUni) ) return true; return false; } // end function IsBanglaKar /****************************************** Determines whether the unicode character is a bangla banjonborno character or not. \param CUni The Unicode character Coded by : S M Mahbub Murshed Date: August 28, 2006 *******************************************/ function IsBanglaBanjonborno(CUni) { if(CUni=='ক' || CUni=='খ' || CUni=='গ' || CUni=='ঘ' || CUni=='ঙ' || CUni=='চ' || CUni=='ছ' || CUni=='জ' || CUni=='ঝ' || CUni=='ঞ' || CUni=='ট' || CUni=='ঠ' || CUni=='ড' || CUni=='ঢ' || CUni=='ণ' || CUni=='ত' || CUni=='থ' || CUni=='দ' || CUni=='ধ' || CUni=='ন' || CUni=='প' || CUni=='ফ' || CUni=='ব' || CUni=='ভ' || CUni=='ম' || CUni=='শ' || CUni=='ষ' || CUni=='স' || CUni=='হ' || CUni=='য' || CUni=='র' || CUni=='ল' || CUni=='য়' || CUni=='ং' || CUni=='ঃ' || CUni=='ঁ' || CUni=='ৎ') return true; return false; } // end function IsBanglaBanjonborno /****************************************** Determines whether the unicode character is a bangla soroborno character or not. \param CUni The Unicode character Coded by : S M Mahbub Murshed Date: August 28, 2006 *******************************************/ function IsBanglaSoroborno(CUni) { if(CUni == 'অ' || CUni=='আ' || CUni=='ই' || CUni=='ঈ' || CUni=='উ' || CUni=='ঊ' || CUni=='ঋ' || CUni=='ঌ' || CUni=='এ' || CUni=='ঐ' || CUni=='ও' || CUni=='ঔ' ) return true; return false; } // end function IsBanglaSoroborno /****************************************** Determines whether the unicode character is a bangla nukta character or not. \param CUni The Unicode character Coded by : S M Mahbub Murshed Date: August 28, 2006 *******************************************/ function IsBanglaNukta(CUni) { if(CUni=='ং' || CUni=='ঃ' || CUni=='ঁ') return true; return false; } // end function IsBanglaNukta /****************************************** Determines whether the unicode character is a bangla ja fola or ra fola character or not. \param CUni The Unicode string Coded by : S M Mahbub Murshed Date: August 30, 2006 *******************************************/ function IsBanglaFola(CUni) { if(CUni=="্য" || CUni=="্র") return true; return false; } // end function IsBanglaFola /****************************************** Determines whether the unicode character is a bangla halant character or not. \param CUni The Unicode character Coded by : S M Mahbub Murshed Date: August 28, 2006 *******************************************/ function IsBanglaHalant(CUni) { if(CUni=='্') return true; return false; } // end function IsBanglaHalant /****************************************** Determines whether the character is a space character or not. \param C The character Coded by : S M Mahbub Murshed Date: August 28, 2006 *******************************************/ function IsSpace(C) { if( C==' ' || C=='\t' || C=='\n' || C=='\r') return true; return false; } // end function IsSpace /****************************************** Maps an unicode character to its equivalent soroborno \param CUni The Unicode kar character to map with Coded by : S M Mahbub Murshed Date: August 30, 2006 *******************************************/ function MapKarToSorborno(CUni) { var CSorborno = CUni; if(CUni=='া') CSorborno = 'আ'; else if(CUni=='ি') CSorborno = 'ই'; else if(CUni=='ী') CSorborno = 'ঈ'; else if(CUni=='ু') CSorborno = 'উ'; else if(CUni=='ূ') CSorborno = 'ঊ'; else if(CUni=='ৃ') CSorborno = 'ঋ'; else if(CUni=='ে') CSorborno = 'এ'; else if(CUni=='ৈ') CSorborno = 'ঐ'; else if(CUni=='ো') CSorborno = 'ও'; else if(CUni=="ো") CSorborno = 'ও'; else if(CUni=='ৌ') CSorborno = 'ঔ'; else if(CUni=="ৌ") CSorborno = 'ঔ'; return CSorborno; } // end function MapKarToSorborno /****************************************** Maps an unicode soroborono to its equivalent kar \param CUni The Unicode sorborno character to map with Coded by : S M Mahbub Murshed Date: August 30, 2006 *******************************************/ function MapSorbornoToKar(CUni) { var CKar = CUni; if(CUni=='আ') CKar = 'া'; else if(CUni=='ই') CKar = 'ি'; else if(CUni=='ঈ') CKar = 'ী'; else if(CUni=='উ') CKar = 'ু'; else if(CUni=='ঊ') CKar = 'ূ'; else if(CUni=='ঋ') CKar = 'ৃ'; else if(CUni=='এ') CKar = 'ে'; else if(CUni=='ঐ') CKar = 'ৈ'; else if(CUni=='ও') CKar = 'ো'; else if(CUni=='ঔ') CKar = 'ৌ'; return CKar; } // end function MapSorbornoToKar