c2589de4
 Luigi Serra
added demo page
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EditArea.prototype.focus = function() {
this.textarea.focus();
this.textareaFocused=true;
};
EditArea.prototype.check_line_selection= function(timer_checkup){
var changes, infos, new_top, new_width,i;
var t1=t2=t2_1=t3=tLines=tend= new Date().getTime();
// l'editeur n'existe plus => on quitte
if(!editAreas[this.id])
return false;
if(!this.smooth_selection && !this.do_highlight)
{
//do nothing
}
else if(this.textareaFocused && editAreas[this.id]["displayed"]==true && this.isResizing==false)
{
infos = this.get_selection_infos();
changes = this.checkTextEvolution( typeof( this.last_selection['full_text'] ) == 'undefined' ? '' : this.last_selection['full_text'], infos['full_text'] );
t2= new Date().getTime();
// if selection change
if(this.last_selection["line_start"] != infos["line_start"] || this.last_selection["line_nb"] != infos["line_nb"] || infos["full_text"] != this.last_selection["full_text"] || this.reload_highlight || this.last_selection["selectionStart"] != infos["selectionStart"] || this.last_selection["selectionEnd"] != infos["selectionEnd"] || !timer_checkup )
{
// move and adjust text selection elements
new_top = this.getLinePosTop( infos["line_start"] );
new_width = Math.max(this.textarea.scrollWidth, this.container.clientWidth -50);
this.selection_field.style.top=this.selection_field_text.style.top=new_top+"px";
if(!this.settings['word_wrap']){
this.selection_field.style.width=this.selection_field_text.style.width=this.test_font_size.style.width=new_width+"px";
}
// usefull? => _$("cursor_pos").style.top=new_top+"px";
if(this.do_highlight==true)
{
// fill selection elements
var curr_text = infos["full_text"].split("\n");
var content = "";
//alert("length: "+curr_text.length+ " i: "+ Math.max(0,infos["line_start"]-1)+ " end: "+Math.min(curr_text.length, infos["line_start"]+infos["line_nb"]-1)+ " line: "+infos["line_start"]+" [0]: "+curr_text[0]+" [1]: "+curr_text[1]);
var start = Math.max(0,infos["line_start"]-1);
var end = Math.min(curr_text.length, infos["line_start"]+infos["line_nb"]-1);
//curr_text[start]= curr_text[start].substr(0,infos["curr_pos"]-1) +"¤_overline_¤"+ curr_text[start].substr(infos["curr_pos"]-1);
for(i=start; i< end; i++){
content+= curr_text[i]+"\n";
}
// add special chars arround selected characters
selLength = infos['selectionEnd'] - infos['selectionStart'];
content = content.substr( 0, infos["curr_pos"] - 1 ) + "\r\r" + content.substr( infos["curr_pos"] - 1, selLength ) + "\r\r" + content.substr( infos["curr_pos"] - 1 + selLength );
content = '<span>'+ content.replace(/&/g,"&").replace(/</g,"<").replace(/>/g,">").replace("\r\r", '</span><strong>').replace("\r\r", '</strong><span>') +'</span>';
if( this.isIE || ( this.isOpera && this.isOpera < 9.6 ) ) {
this.selection_field.innerHTML= "<pre>" + content.replace(/^\r?\n/, "<br>") + "</pre>";
} else {
this.selection_field.innerHTML= content;
}
this.selection_field_text.innerHTML = this.selection_field.innerHTML;
t2_1 = new Date().getTime();
// check if we need to update the highlighted background
if(this.reload_highlight || (infos["full_text"] != this.last_text_to_highlight && (this.last_selection["line_start"]!=infos["line_start"] || this.show_line_colors || this.settings['word_wrap'] || this.last_selection["line_nb"]!=infos["line_nb"] || this.last_selection["nb_line"]!=infos["nb_line"]) ) )
{
this.maj_highlight(infos);
}
}
}
t3= new Date().getTime();
// manage line heights
if( this.settings['word_wrap'] && infos["full_text"] != this.last_selection["full_text"])
{
// refresh only 1 line if text change concern only one line and that the total line number has not changed
if( changes.newText.split("\n").length == 1 && this.last_selection['nb_line'] && infos['nb_line'] == this.last_selection['nb_line'] )
{
this.fixLinesHeight( infos['full_text'], changes.lineStart, changes.lineStart );
}
else
{
this.fixLinesHeight( infos['full_text'], changes.lineStart, -1 );
}
}
tLines= new Date().getTime();
// manage bracket finding
if( infos["line_start"] != this.last_selection["line_start"] || infos["curr_pos"] != this.last_selection["curr_pos"] || infos["full_text"].length!=this.last_selection["full_text"].length || this.reload_highlight || !timer_checkup )
{
// move _cursor_pos
var selec_char= infos["curr_line"].charAt(infos["curr_pos"]-1);
var no_real_move=true;
if(infos["line_nb"]==1 && (this.assocBracket[selec_char] || this.revertAssocBracket[selec_char]) ){
no_real_move=false;
//findEndBracket(infos["line_start"], infos["curr_pos"], selec_char);
if(this.findEndBracket(infos, selec_char) === true){
_$("end_bracket").style.visibility ="visible";
_$("cursor_pos").style.visibility ="visible";
_$("cursor_pos").innerHTML = selec_char;
_$("end_bracket").innerHTML = (this.assocBracket[selec_char] || this.revertAssocBracket[selec_char]);
}else{
_$("end_bracket").style.visibility ="hidden";
_$("cursor_pos").style.visibility ="hidden";
}
}else{
_$("cursor_pos").style.visibility ="hidden";
_$("end_bracket").style.visibility ="hidden";
}
//alert("move cursor");
this.displayToCursorPosition("cursor_pos", infos["line_start"], infos["curr_pos"]-1, infos["curr_line"], no_real_move);
if(infos["line_nb"]==1 && infos["line_start"]!=this.last_selection["line_start"])
this.scroll_to_view();
}
this.last_selection=infos;
}
tend= new Date().getTime();
//if( (tend-t1) > 7 )
// console.log( "tps total: "+ (tend-t1) + " tps get_infos: "+ (t2-t1)+ " tps selec: "+ (t2_1-t2)+ " tps highlight: "+ (t3-t2_1) +" tps lines: "+ (tLines-t3) +" tps cursor+lines: "+ (tend-tLines)+" \n" );
if(timer_checkup){
setTimeout("editArea.check_line_selection(true)", this.check_line_selection_timer);
}
};
EditArea.prototype.get_selection_infos= function(){
var sel={}, start, end, len, str;
this.getIESelection();
start = this.textarea.selectionStart;
end = this.textarea.selectionEnd;
if( this.last_selection["selectionStart"] == start && this.last_selection["selectionEnd"] == end && this.last_selection["full_text"] == this.textarea.value )
{
return this.last_selection;
}
if(this.tabulation!="\t" && this.textarea.value.indexOf("\t")!=-1)
{ // can append only after copy/paste
len = this.textarea.value.length;
this.textarea.value = this.replace_tab(this.textarea.value);
start = end = start+(this.textarea.value.length-len);
this.area_select( start, 0 );
}
sel["selectionStart"] = start;
sel["selectionEnd"] = end;
sel["full_text"] = this.textarea.value;
sel["line_start"] = 1;
sel["line_nb"] = 1;
sel["curr_pos"] = 0;
sel["curr_line"] = "";
sel["indexOfCursor"] = 0;
sel["selec_direction"] = this.last_selection["selec_direction"];
//return sel;
var splitTab= sel["full_text"].split("\n");
var nbLine = Math.max(0, splitTab.length);
var nbChar = Math.max(0, sel["full_text"].length - (nbLine - 1)); // (remove \n caracters from the count)
if( sel["full_text"].indexOf("\r") != -1 )
nbChar = nbChar - ( nbLine - 1 ); // (remove \r caracters from the count)
sel["nb_line"] = nbLine;
sel["nb_char"] = nbChar;
if(start>0){
str = sel["full_text"].substr(0,start);
sel["curr_pos"] = start - str.lastIndexOf("\n");
sel["line_start"] = Math.max(1, str.split("\n").length);
}else{
sel["curr_pos"]=1;
}
if(end>start){
sel["line_nb"]=sel["full_text"].substring(start,end).split("\n").length;
}
sel["indexOfCursor"]=start;
sel["curr_line"]=splitTab[Math.max(0,sel["line_start"]-1)];
// determine in which direction the selection grow
if(sel["selectionStart"] == this.last_selection["selectionStart"]){
if(sel["selectionEnd"]>this.last_selection["selectionEnd"])
sel["selec_direction"]= "down";
else if(sel["selectionEnd"] == this.last_selection["selectionStart"])
sel["selec_direction"]= this.last_selection["selec_direction"];
}else if(sel["selectionStart"] == this.last_selection["selectionEnd"] && sel["selectionEnd"]>this.last_selection["selectionEnd"]){
sel["selec_direction"]= "down";
}else{
sel["selec_direction"]= "up";
}
_$("nbLine").innerHTML = nbLine;
_$("nbChar").innerHTML = nbChar;
_$("linePos").innerHTML = sel["line_start"];
_$("currPos").innerHTML = sel["curr_pos"];
return sel;
};
// set IE position in Firefox mode (textarea.selectionStart and textarea.selectionEnd)
EditArea.prototype.getIESelection= function(){
var selectionStart, selectionEnd, range, stored_range;
if( !this.isIE )
return false;
// make it work as nowrap mode (easier for range manipulation with lineHeight)
if( this.settings['word_wrap'] )
this.textarea.wrap='off';
try{
range = document.selection.createRange();
stored_range = range.duplicate();
stored_range.moveToElementText( this.textarea );
stored_range.setEndPoint( 'EndToEnd', range );
if( stored_range.parentElement() != this.textarea )
throw "invalid focus";
// the range don't take care of empty lines in the end of the selection
var scrollTop = this.result.scrollTop + document.body.scrollTop;
var relative_top= range.offsetTop - parent.calculeOffsetTop(this.textarea) + scrollTop;
var line_start = Math.round((relative_top / this.lineHeight) +1);
var line_nb = Math.round( range.boundingHeight / this.lineHeight );
selectionStart = stored_range.text.length - range.text.length;
selectionStart += ( line_start - this.textarea.value.substr(0, selectionStart).split("\n").length)*2; // count missing empty \r to the selection
selectionStart -= ( line_start - this.textarea.value.substr(0, selectionStart).split("\n").length ) * 2;
selectionEnd = selectionStart + range.text.length;
selectionEnd += (line_start + line_nb - 1 - this.textarea.value.substr(0, selectionEnd ).split("\n").length)*2;
this.textarea.selectionStart = selectionStart;
this.textarea.selectionEnd = selectionEnd;
}
catch(e){}
// restore wrap mode
if( this.settings['word_wrap'] )
this.textarea.wrap='soft';
};
// select the text for IE (and take care of \r caracters)
EditArea.prototype.setIESelection= function(){
var a = this.textarea, nbLineStart, nbLineEnd, range;
if( !this.isIE )
return false;
nbLineStart = a.value.substr(0, a.selectionStart).split("\n").length - 1;
nbLineEnd = a.value.substr(0, a.selectionEnd).split("\n").length - 1;
range = document.selection.createRange();
range.moveToElementText( a );
range.setEndPoint( 'EndToStart', range );
range.moveStart('character', a.selectionStart - nbLineStart);
range.moveEnd('character', a.selectionEnd - nbLineEnd - (a.selectionStart - nbLineStart) );
range.select();
};
EditArea.prototype.checkTextEvolution=function(lastText,newText){
// ch will contain changes datas
var ch={},baseStep=200, cpt=0, end, step,tStart=new Date().getTime();
end = Math.min(newText.length, lastText.length);
step = baseStep;
// find how many chars are similar at the begin of the text
while( cpt<end && step>=1 ){
if(lastText.substr(cpt, step) == newText.substr(cpt, step)){
cpt+= step;
}else{
step= Math.floor(step/2);
}
}
ch.posStart = cpt;
ch.lineStart= newText.substr(0, ch.posStart).split("\n").length -1;
cpt_last = lastText.length;
cpt = newText.length;
step = baseStep;
// find how many chars are similar at the end of the text
while( cpt>=0 && cpt_last>=0 && step>=1 ){
if(lastText.substr(cpt_last-step, step) == newText.substr(cpt-step, step)){
cpt-= step;
cpt_last-= step;
}else{
step= Math.floor(step/2);
}
}
ch.posNewEnd = cpt;
ch.posLastEnd = cpt_last;
if(ch.posNewEnd<=ch.posStart){
if(lastText.length < newText.length){
ch.posNewEnd= ch.posStart + newText.length - lastText.length;
ch.posLastEnd= ch.posStart;
}else{
ch.posLastEnd= ch.posStart + lastText.length - newText.length;
ch.posNewEnd= ch.posStart;
}
}
ch.newText = newText.substring(ch.posStart, ch.posNewEnd);
ch.lastText = lastText.substring(ch.posStart, ch.posLastEnd);
ch.lineNewEnd = newText.substr(0, ch.posNewEnd).split("\n").length -1;
ch.lineLastEnd = lastText.substr(0, ch.posLastEnd).split("\n").length -1;
ch.newTextLine = newText.split("\n").slice(ch.lineStart, ch.lineNewEnd+1).join("\n");
ch.lastTextLine = lastText.split("\n").slice(ch.lineStart, ch.lineLastEnd+1).join("\n");
//console.log( ch );
return ch;
};
EditArea.prototype.tab_selection= function(){
if(this.is_tabbing)
return;
this.is_tabbing=true;
//infos=getSelectionInfos();
//if( document.selection ){
this.getIESelection();
/* Insertion du code de formatage */
var start = this.textarea.selectionStart;
var end = this.textarea.selectionEnd;
var insText = this.textarea.value.substring(start, end);
/* Insert tabulation and ajust cursor position */
var pos_start=start;
var pos_end=end;
if (insText.length == 0) {
// if only one line selected
this.textarea.value = this.textarea.value.substr(0, start) + this.tabulation + this.textarea.value.substr(end);
pos_start = start + this.tabulation.length;
pos_end=pos_start;
} else {
start= Math.max(0, this.textarea.value.substr(0, start).lastIndexOf("\n")+1);
endText=this.textarea.value.substr(end);
startText=this.textarea.value.substr(0, start);
tmp= this.textarea.value.substring(start, end).split("\n");
insText= this.tabulation+tmp.join("\n"+this.tabulation);
this.textarea.value = startText + insText + endText;
pos_start = start;
pos_end= this.textarea.value.indexOf("\n", startText.length + insText.length);
if(pos_end==-1)
pos_end=this.textarea.value.length;
//pos = start + repdeb.length + insText.length + ;
}
this.textarea.selectionStart = pos_start;
this.textarea.selectionEnd = pos_end;
//if( document.selection ){
if(this.isIE)
{
this.setIESelection();
setTimeout("editArea.is_tabbing=false;", 100); // IE can't accept to make 2 tabulation without a little break between both
}
else
{
this.is_tabbing=false;
}
};
EditArea.prototype.invert_tab_selection= function(){
var t=this, a=this.textarea;
if(t.is_tabbing)
return;
t.is_tabbing=true;
//infos=getSelectionInfos();
//if( document.selection ){
t.getIESelection();
var start = a.selectionStart;
var end = a.selectionEnd;
var insText = a.value.substring(start, end);
/* Tab remove and cursor seleciton adjust */
var pos_start=start;
var pos_end=end;
if (insText.length == 0) {
if(a.value.substring(start-t.tabulation.length, start)==t.tabulation)
{
a.value = a.value.substr(0, start-t.tabulation.length) + a.value.substr(end);
pos_start = Math.max(0, start-t.tabulation.length);
pos_end = pos_start;
}
/*
a.value = a.value.substr(0, start) + t.tabulation + insText + a.value.substr(end);
pos_start = start + t.tabulation.length;
pos_end=pos_start;*/
} else {
start = a.value.substr(0, start).lastIndexOf("\n")+1;
endText = a.value.substr(end);
startText = a.value.substr(0, start);
tmp = a.value.substring(start, end).split("\n");
insText = "";
for(i=0; i<tmp.length; i++){
for(j=0; j<t.tab_nb_char; j++){
if(tmp[i].charAt(0)=="\t"){
tmp[i]=tmp[i].substr(1);
j=t.tab_nb_char;
}else if(tmp[i].charAt(0)==" ")
tmp[i]=tmp[i].substr(1);
}
insText+=tmp[i];
if(i<tmp.length-1)
insText+="\n";
}
//insText+="_";
a.value = startText + insText + endText;
pos_start = start;
pos_end = a.value.indexOf("\n", startText.length + insText.length);
if(pos_end==-1)
pos_end=a.value.length;
//pos = start + repdeb.length + insText.length + ;
}
a.selectionStart = pos_start;
a.selectionEnd = pos_end;
//if( document.selection ){
if(t.isIE){
// select the text for IE
t.setIESelection();
setTimeout("editArea.is_tabbing=false;", 100); // IE can accept to make 2 tabulation without a little break between both
}else
t.is_tabbing=false;
};
EditArea.prototype.press_enter= function(){
if(!this.smooth_selection)
return false;
this.getIESelection();
var scrollTop= this.result.scrollTop;
var scrollLeft= this.result.scrollLeft;
var start=this.textarea.selectionStart;
var end= this.textarea.selectionEnd;
var start_last_line= Math.max(0 , this.textarea.value.substring(0, start).lastIndexOf("\n") + 1 );
var begin_line= this.textarea.value.substring(start_last_line, start).replace(/^([ \t]*).*/gm, "$1");
var lineStart = this.textarea.value.substring(0, start).split("\n").length;
if(begin_line=="\n" || begin_line=="\r" || begin_line.length==0)
{
return false;
}
if(this.isIE || ( this.isOpera && this.isOpera < 9.6 ) ){
begin_line="\r\n"+ begin_line;
}else{
begin_line="\n"+ begin_line;
}
//alert(start_last_line+" strat: "+start +"\n"+this.textarea.value.substring(start_last_line, start)+"\n_"+begin_line+"_")
this.textarea.value= this.textarea.value.substring(0, start) + begin_line + this.textarea.value.substring(end);
this.area_select(start+ begin_line.length ,0);
// during this process IE scroll back to the top of the textarea
if(this.isIE){
this.result.scrollTop = scrollTop;
this.result.scrollLeft = scrollLeft;
}
return true;
};
EditArea.prototype.findEndBracket= function(infos, bracket){
var start=infos["indexOfCursor"];
var normal_order=true;
//curr_text=infos["full_text"].split("\n");
if(this.assocBracket[bracket])
endBracket=this.assocBracket[bracket];
else if(this.revertAssocBracket[bracket]){
endBracket=this.revertAssocBracket[bracket];
normal_order=false;
}
var end=-1;
var nbBracketOpen=0;
for(var i=start; i<infos["full_text"].length && i>=0; ){
if(infos["full_text"].charAt(i)==endBracket){
nbBracketOpen--;
if(nbBracketOpen<=0){
//i=infos["full_text"].length;
end=i;
break;
}
}else if(infos["full_text"].charAt(i)==bracket)
nbBracketOpen++;
if(normal_order)
i++;
else
i--;
}
//end=infos["full_text"].indexOf("}", start);
if(end==-1)
return false;
var endLastLine=infos["full_text"].substr(0, end).lastIndexOf("\n");
if(endLastLine==-1)
line=1;
else
line= infos["full_text"].substr(0, endLastLine).split("\n").length + 1;
var curPos= end - endLastLine - 1;
var endLineLength = infos["full_text"].substring(end).split("\n")[0].length;
this.displayToCursorPosition("end_bracket", line, curPos, infos["full_text"].substring(endLastLine +1, end + endLineLength));
return true;
};
EditArea.prototype.displayToCursorPosition= function(id, start_line, cur_pos, lineContent, no_real_move){
var elem,dest,content,posLeft=0,posTop,fixPadding,topOffset,endElem;
elem = this.test_font_size;
dest = _$(id);
content = "<span id='test_font_size_inner'>"+lineContent.substr(0, cur_pos).replace(/&/g,"&").replace(/</g,"<")+"</span><span id='endTestFont'>"+lineContent.substr(cur_pos).replace(/&/g,"&").replace(/</g,"<")+"</span>";
if( this.isIE || ( this.isOpera && this.isOpera < 9.6 ) ) {
elem.innerHTML= "<pre>" + content.replace(/^\r?\n/, "<br>") + "</pre>";
} else {
elem.innerHTML= content;
}
endElem = _$('endTestFont');
topOffset = endElem.offsetTop;
fixPadding = parseInt( this.content_highlight.style.paddingLeft.replace("px", "") );
posLeft = 45 + endElem.offsetLeft + ( !isNaN( fixPadding ) && topOffset > 0 ? fixPadding : 0 );
posTop = this.getLinePosTop( start_line ) + topOffset;// + Math.floor( ( endElem.offsetHeight - 1 ) / this.lineHeight ) * this.lineHeight;
// detect the case where the span start on a line but has no display on it
if( this.isIE && cur_pos > 0 && endElem.offsetLeft == 0 )
{
posTop += this.lineHeight;
}
if(no_real_move!=true){ // when the cursor is hidden no need to move him
dest.style.top=posTop+"px";
dest.style.left=posLeft+"px";
}
// usefull for smarter scroll
dest.cursor_top=posTop;
dest.cursor_left=posLeft;
// _$(id).style.marginLeft=posLeft+"px";
};
EditArea.prototype.getLinePosTop= function(start_line){
var elem= _$('line_'+ start_line), posTop=0;
if( elem )
posTop = elem.offsetTop;
else
posTop = this.lineHeight * (start_line-1);
return posTop;
};
// return the dislpayed height of a text (take word-wrap into account)
EditArea.prototype.getTextHeight= function(text){
var t=this,elem,height;
elem = t.test_font_size;
content = text.replace(/&/g,"&").replace(/</g,"<");
if( t.isIE || ( this.isOpera && this.isOpera < 9.6 ) ) {
elem.innerHTML= "<pre>" + content.replace(/^\r?\n/, "<br>") + "</pre>";
} else {
elem.innerHTML= content;
}
height = elem.offsetHeight;
height = Math.max( 1, Math.floor( elem.offsetHeight / this.lineHeight ) ) * this.lineHeight;
return height;
};
/**
* Fix line height for the given lines
* @param Integer linestart
* @param Integer lineEnd End line or -1 to cover all lines
*/
EditArea.prototype.fixLinesHeight= function( textValue, lineStart,lineEnd ){
var aText = textValue.split("\n");
if( lineEnd == -1 )
lineEnd = aText.length-1;
for( var i = Math.max(0, lineStart); i <= lineEnd; i++ )
{
if( elem = _$('line_'+ ( i+1 ) ) )
{
elem.style.height= typeof( aText[i] ) != "undefined" ? this.getTextHeight( aText[i] )+"px" : this.lineHeight;
}
}
};
EditArea.prototype.area_select= function(start, length){
this.textarea.focus();
start = Math.max(0, Math.min(this.textarea.value.length, start));
end = Math.max(start, Math.min(this.textarea.value.length, start+length));
if(this.isIE)
{
this.textarea.selectionStart = start;
this.textarea.selectionEnd = end;
this.setIESelection();
}
else
{
// Opera bug when moving selection start and selection end
if(this.isOpera && this.isOpera < 9.6 )
{
this.textarea.setSelectionRange(0, 0);
}
this.textarea.setSelectionRange(start, end);
}
this.check_line_selection();
};
EditArea.prototype.area_get_selection= function(){
var text="";
if( document.selection ){
var range = document.selection.createRange();
text=range.text;
}else{
text= this.textarea.value.substring(this.textarea.selectionStart, this.textarea.selectionEnd);
}
return text;
};
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