html_editor.js

一款开源的sns系统源码 安装简单

// -----------------------------------------------------------------------
// This file is part of AROUNDMe
// 
// Copyright (C) 2003-2007 Barnraiser
// http://www.barnraiser.org/
// [e-mail]
// 
// This program 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 3 of the License, or
// (at your option) any later version.
// 
// This program 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 this program; see the file COPYING.txt.  If not, see
// <http://www.gnu.org/licenses/>
// -----------------------------------------------------------------------

function preview(html_editor_name) {
	var str = "content=" + escape(document.getElementById(html_editor_name).value);
	makeRequest('components/core/relay/html_editor.php', str, view_preview);
	document.getElementById('preview').style.display = "block";
	document.getElementById(html_editor_name).style.display = "none";
	document.getElementById('tools').style.display = "none";
	document.getElementById('_preview').className = "button active";
	document.getElementById('_edit').className = "button";
}

function view_preview() {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			parent.frames[0].document.getElementById('body_container').innerHTML = "";
			var result = http_request.responseText;
			parent.frames[0].document.getElementById('body_container').innerHTML = result;
			
			
		}
	}
}

function edit(html_editor_name) {
	document.getElementById('preview').style.display = "none";
	document.getElementById(html_editor_name).style.display = "block";
	document.getElementById('tools').style.display = "block";
	document.getElementById('_preview').className = "button";
	document.getElementById('_edit').className = "button active";
}


/*
The following function was from the Dokuwiki project (also GPL):
http://wiki.splitbrain.org/wiki:dokuwiki
by Andreas Gohr <[e-mail]>
Thank you to the docuwiki project for their contribution to this project!
*/

function insertTag(src,tagOpen,tagClose) {

  var txtarea = document.getElementById(src);
  // IE
  if(document.selection  && !is_gecko) {
    var theSelection = document.selection.createRange().text;
    var replaced = true;
    if(!theSelection){
      replaced = false;
    }
    txtarea.focus();

    // This has change
    var text = theSelection;
    
    if(theSelection.charAt(theSelection.length - 1) == " "){// exclude ending space char, if any
      theSelection = theSelection.substring(0, theSelection.length - 1);
      r = document.selection.createRange();
      r.text = tagOpen + theSelection + tagClose + " ";
    } else {
      r = document.selection.createRange();
      r.text = tagOpen + theSelection + tagClose;
    }
    if(!replaced){
      r.moveStart('character',-text.length-tagClose.length);
      r.moveEnd('character',-tagClose.length);
    }
    r.select();
  // Mozilla
  } else if(txtarea.selectionStart || txtarea.selectionStart == '0') {
	
    replaced = false;
    var startPos = txtarea.selectionStart;
    var endPos   = txtarea.selectionEnd;

    if(endPos - startPos) {
    	replaced = true;
    }
    
    var scrollTop=txtarea.scrollTop;
    var myText = (txtarea.value).substring(startPos, endPos);

    if(!myText) {
    	myText='';
    }
    
    if(myText.charAt(myText.length - 1) == " "){ // exclude ending space char, if any
      subst = tagOpen + myText.substring(0, (myText.length - 1)) + tagClose + " ";
    } else {
      subst = tagOpen + myText + tagClose;
    }
    txtarea.value = txtarea.value.substring(0, startPos) + subst +
                    txtarea.value.substring(endPos, txtarea.value.length);
    txtarea.focus();

    //set new selection
    if(replaced){
      var cPos=startPos+(tagOpen.length+myText.length+tagClose.length);
      txtarea.selectionStart=cPos;
      txtarea.selectionEnd=cPos;
    }else{
      txtarea.selectionStart=startPos+tagOpen.length;
      txtarea.selectionEnd=startPos+tagOpen.length+myText.length;
    }
    txtarea.scrollTop=scrollTop;
  // All others
  } else {
    var copy_alertText=alertText;
    var re1=new RegExp("\\$1","g");
    var re2=new RegExp("\\$2","g");
    copy_alertText=copy_alertText.replace(re1,'');
    copy_alertText=copy_alertText.replace(re2,tagOpen+tagClose);

    text=tagOpen+tagClose;
    //append to the end
    txtarea.value += "\n";

    // in Safari this causes scrolling
    if(!is_safari) {
      txtarea.focus();
    }

  }
  // reposition cursor if possible
  if (txtarea.createTextRange){
    txtarea.caretPos = document.selection.createRange().duplicate();
  }
}

// added by sebastian
function fetchCss() {

	var style = document.createElement('style');
	style.setAttribute('type', 'text/css');

	
	if(style.styleSheet) {
		var styles = parent.frames[0].document.styleSheets;
		styles[0].cssText = styles[0].cssText + '\n' + webspace_css;
	}
	else {
		var text = document.createTextNode(webspace_css);
		style.appendChild(text);
	}

	parent.frames[0].document.getElementsByTagName('head').item(0).appendChild(style);

}