/**
* $Id: helpers.js 366 2007-11-24 02:27:32Z wingedfox $
* $HeadURL: https://svn.debugger.ru/repos/jslibs/BrowserExtensions/tags/BrowserExtensions.015/helpers.js $
*
* File contains differrent helper functions
*
* @author Ilya Lebedev <ilya@lebedev.net>
* @license LGPL
* @version $Rev: 366 $
*/
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_=arguments,c=false,C;if(!isUndefined(_[3])&&_[3].indexOf("*")==0){_[3]=parseInt(_[3].replace(/\D/g,""));if(isNaN(_[3])){_[3]=l[o];o++}else{_[3]=l[_[3]]}}if(""!=_[4]){if(_[4].indexOf("*")==1){_[4]=parseInt(_[4].replace(/\D/g,""));if(isNaN(_[4])){_[4]=l[o];o++}else{_[4]=l[_[4]]}}else{_[4]=_[4].replace(/\D/,"")}_[4]=Math.abs(_[4]);}_[1]=parseInt(_[1]);var C;if(isNumeric(_[1])){C=l[_[1]]}else{C=l[o];o++}switch(_[5]){case"b":if(C<0)C=0x10000000000000000+parseInt(C);C=Number(C).bin(_[4]);if(_[4])C=C.substr(0,_[4]);if(_[2]=='#')C='0b'+C;break;case"c":C=String.fromCharCode(C);break;case"u":C=Math.abs(C);case"d":C=Math.round(C);if(C<0){C="-"+Math.abs(C).dec(_[4]);}else{C=Number(C).dec(_[4]);c=(_[2]==' '||_[2]=='+');}break;case"e":case"E":if(C>0){c=(_[2]==' '||_[2]=='+');}C=Number(C).toExponential(_[4]?_[4]:6);if(_[5]=='E')C=C.toUpperCase();break;case"f":if(C>0){c=(_[2]==' '||_[2]=='+');}C=Number(C).toFixed(isNumeric(_[4])?_[4]:6);break;case"o":if(C<0)C=0x10000000000000000+parseInt(C);C=Number(C).toString(8);if(_[4])C=C.substr(0,_[4]);if(_[2]=='#'&&C!=0)C='0'+C;break;case"s":C=String(C);if(_[4])C=C.substr(0,_[4]);break;case"x":case"X":if(C<0)C=0x10000000000000000+parseInt(C);C=Number(C).hex(-_[4]);if(_[4])C=C.substr(0,_[4]);if(_[2]=='#')C='0x'+C;if(_[5]=='X')C=C.toUpperCase();break}if(c)C=_[2]+C;if(_[3])C=(_[2]=='-'||_[3]<0)?C.padRight(_[3]):C.padLeft(_[3],_[2]=='0'?0:" ");return C});return O.replace(/\0\0/g,"%");};DocumentSelection=new function(){var O=this;var Q={'prevCalcNode':'__prevCalcNode'};var _=function(l,o){var C=o[0],e,v="";if(!C||!C.tagName)return false;switch(o[0].tagName.toLowerCase()){case'input':if(C.type&&C.type!='text'&&C.type!='password')return false;case'textarea':v="input";break;case'iframe':v="frame";o[0]=C.contentWindow;break;default:return false}if('function'==typeof O.module[v])O.module[v]=new O.module[v](Q);if(!O.module[v]||!O.module[v][l])throw new Error('Method \''+l+'\' is not implemented for DocumentSelection \''+v+'\' module.');return O.module[v][l].apply(O,o);};var c=function(I,l,o){if(window.getSelection){var C=O.getSelectionOffset(I);if(I.contentWindow)I=I.contentWindow.document.body;if(l>C.y)I.scrollTop=C.y;else if(l+I.clientHeight>C.y)I.scrollTop=l;else I.scrollTop=C.y-I.clientHeight/2;if(o>C.x)I.scrollLeft=C.x;else if(o+I.clientWidth>C.x)I.scrollLeft=o;else I.scrollLeft=C.x-I.clientWidth/2}};O.setRange=function(I,C,e,v){var V=I.scrollTop,x=I.scrollLeft;if(v){var X=O.getStart(I);e=X+e;C=X+C}if(C<0)C=0;if(e<C)e=C;_('setRange',[I,C,e]);c(I,V,x);};O.getSelection=function(i){return _('getSelection',[i]);};O.getStart=function(i){return _('getPos',[i,true]);};O.getEnd=function(i){return _('getPos',[i,false]);};O.getCursorPosition=function(I){return O.getStart(I);};O.insertAtCursor=function(i,I,C){var e=i.scrollTop,v=i.scrollLeft;if(!C){_('del',[i]);}var V=_('ins',[i,I]);c(i,e,v);return V};O.wrapSelection=function(I,l,o){var C=O.getCursorPosition(I),e=O.getEnd(I);if(C==e){O.insertAtCursor(I,l+o);}else{O.insertAtCursor(I,l,true);O.setRange(I,e+l.length,e+l.length);O.insertAtCursor(I,o,true);}};O.deleteAtCursor=function(I,l){if(!O.getSelection(I)){if(l)O.setRange(I,0,1,true);else O.setRange(I,-1,0,true);}return O.deleteSelection(I);};O.deleteSelection=function(i){var I=i.scrollLeft,C=i.scrollTop,e=_('del',[i]);c(i,C,I);return e};O.getSelectionOffset=function(i){return _('getSelectionOffset',[i],true);}};DocumentSelection.module={'input':function(o){var O=this;var Q=null;O.getPos=function(i,I){var l;try{i.setActive();if(I)l=Math.abs(document.selection.createRange().moveStart("character",-100000000));else l=Math.abs(document.selection.createRange().moveEnd("character",-100000000));if(i.tagName.toLowerCase()!='input'){var _=document.body.createTextRange();_.moveToElementText(i);var c=Math.abs(_.moveStart("character",-100000000));l-=c}}catch(e){try{l=(I?i.selectionStart:i.selectionEnd);}catch(e){l=0}}return l};O.del=function(i){var l="",_=O.getPos(i,true),c=O.getPos(i,false);if(_!=c){var C=document.selection&&!window.opera?i.value.replace(/\r/g,""):i.value;l=C.substring(_,c);i.value=C.substring(0,_)+C.substring(c,C.length);O.setRange(i,_,_);}return l};O.ins=function(i,l){var _="",c=O.getPos(i,true);var C=document.selection&&!window.opera?i.value.replace(/\r/g,""):i.value;i.value=C.substring(0,c)+l+C.substring(c,C.length);c+=l.length;O.setRange(i,c,c);return c};O.getSelection=function(i){var l=O.getPos(i,true),_=O.getPos(i,false);if(_<l)_=l;var c=document.selection&&!window.opera?i.value.replace(/\r/g,""):i.value;return c.substring(l,_);};O.setRange=function(i,I,l){if('function'==typeof i.setSelectionRange){try{i.setSelectionRange(I,l)}catch(e){}}else{var _;try{_=i.createTextRange();}catch(e){try{_=document.body.createTextRange();_.moveToElementText(i);}catch(e){return false}}_.collapse(true);_.moveStart("character",I);_.moveEnd("character",l-I);_.select();}};O.getSelectionOffset=function(I){var _;if('function'==typeof I.setSelectionRange){if(!Q){Q=document.createElement('td');document.body.appendChild(Q);}if(Q[o.prevCalcNode]!=I){Q[o.prevCalcNode]=I;var c=document.defaultView.getComputedStyle(I,null);for(var C in c){try{if(c[C])Q.style[C]=c[C]}catch(e){}}Q.style.overflow='auto';Q.style.position='absolute';Q.style.visibility='hidden';Q.style.zIndex='-10';Q.style.left="-10000px";Q.style.top="-10000px";Q.style.backgroundColor='yellow'}var _=document.createRange(),v=I.value||" ";if('input'==I.tagName.toLowerCase()){Q.style.width='auto';Q.style.whiteSpace='nowrap'}else{Q.style.whiteSpace='off'==I.getAttribute('wrap')?"pre":""}v=v.replace(/\x20\x20/g,"\x20\xa0").replace(/</g,"<").replace(/>/g,">");Q.innerHTML=(v.substring(0,I.selectionStart-1)+"<span>"+v.substring(I.selectionStart-1,I.selectionStart)+"</span>"+v.substring(I.selectionStart)).replace(/\n/g,"<br />").replace(/\t/g,"<em style=\"white-space:pre\">\t</em>");var V=Q.getElementsByTagName('span')[0];V.style.border='1px solid red';_.offsetLeft=V.offsetLeft;_.offsetTop=V.offsetTop;_.offsetHeight=V.offsetHeight;if("\n"==v.charAt(I.selectionStart-1))_.offsetTop+=_.offsetHeight*2;V=null}else if(document.selection&&document.selection.createRange){_=document.selection.createRange();_.offsetHeight=Math.round(_.boundingHeight/(_.text.replace(/[^\n]/g,"").length+1));if(I.tagName&&'textarea'==I.tagName.toLowerCase()){var x=DOM.getOffset(I);_={'offsetTop':_.offsetTop-x.y+DOM.getBodyScrollTop(),'offsetLeft':_.offsetLeft-x.x+DOM.getBodyScrollLeft(),'offsetHeight':_.offsetHeight}}}if(_){return{'x':_.offsetLeft,'y':_.offsetTop,'h':_.offsetHeight}}return{'x':0,'y':0,'h':0}}},'frame':function(){var I=this;I.getPos=function(i,l){var o=0;if('function'==typeof i.getSelection){var O=i.getSelection(),Q=O.anchorNode,_=O.anchorOffset,c=O.focusNode,C=O.focusOffset,e=false,v=false,V=0,x=0,X,z=document.createTreeWalker(i.document.body,NodeFilter.SHOW_TEXT,null,false);if(Q.nodeType!=3){Q=Q.childNodes[_];_=0}if(c.nodeType!=3){c=c.childNodes[C];C=0}while(X=z.nextNode()){if(X==c){x+=C;v=true}if(X==Q){V+=_;e=true}if(!v)x+=X.nodeValue.length;if(!e)V+=X.nodeValue.length;if(v&&e)break}o=l?Math.min(x,V):Math.max(x,V)}else{i.document.body.setActive();o=Math.abs(i.document.selection.createRange()[l?"moveStart":"moveEnd"]("character",-100000000));}return o};I.del=function(i){if('function'==typeof i.getSelection){var l=i.getSelection(),o=l.rangeCount;while(--o>-1)l.getRangeAt(o).deleteContents();}else if(i.document&&i.document.selection){i.document.selection.createRange().text="";i.document.selection.createRange().select();}};I.ins=function(l,o){var O=I.getPos(l,true)+o.length;if('function'==typeof l.getSelection){var Q=l.document.createTextNode(o),_=l.getSelection();_.getRangeAt(0).insertNode(Q);Q.parentNode.normalize();}else if(l.document&&l.document.selection){l.document.body.setActive();l.document.selection.createRange().text=o}I.setRange(l,O,O);return O};I.getSelection=function(i,l,o){if('function'==typeof i.getSelection){var l=i.getSelection();return l?l.toString():""}else if(i.document&&i.document.selection){return i.document.selection.createRange().text}};I.setRange=function(i,l,o){if('function'==typeof i.getSelection){var O=i.getSelection();O.removeAllRanges();var Q=i.document.createRange(),_=0,c=0,C,e,v=document.createTreeWalker(i.document.body,NodeFilter.SHOW_TEXT,null,false);while((C=v.nextNode())&&(!C.nodeValue.length||(_+C.nodeValue.length<l))){e=C;_+=C.nodeValue.length}if(C||(C=e)){Q.setStart(C,l-_);Q.setEnd(C,l-_);}if(C){do{if(C.nodeType!=3)continue;if(_+C.nodeValue.length<o){_+=C.nodeValue.length}else{Q.setEnd(C,o-_);break}}while(C=v.nextNode())}O.addRange(Q);}else if(i.document&&i.document.selection){i.document.body.setActive();var Q=i.document.selection.createRange();Q.moveToElementText(i.document.body);Q.move("character",l);Q.moveEnd("character",o-l);Q.select();}};I.getSelectionOffset=function(i){var l={'x':0,'y':0,'h':0};if('function'==typeof i.getSelection){var o=i.getSelection().getRangeAt(0),O=o.endOffset,Q=i.document.createElement('span'),_=Q;Q.style.borderLeft='1px solid red';o.insertNode(Q);l.h=_.offsetHeight;while(_.offsetParent){l.x+=_.offsetLeft;l.y+=_.offsetTop;_=_.offsetParent}Q.parentNode.removeChild(Q);if(O-o.endOffset){o.setEnd(o.endContainer.nextSibling,O-o.endOffset);i.getSelection().addRange(o)}}else if(i.document&&i.document.selection){var o=i.document.selection.createRange();l.h=o.boundingHeight;l.x=o.offsetLeft;l.y=o.offsetTop}return l}}};
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