/*
	Copyright (C) 2003-2011 UseBB Team
	http://www.usebb.net
	
	$Id: javascript.js 1754 2011-07-18 14:57:36Z pc_freak $
	
	This file is part of UseBB.
	
	UseBB 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.
	
	UseBB 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 UseBB; if not, write to the Free Software
	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

/**
 * Some browser detection
 */
var clientPC	= navigator.userAgent.toLowerCase(); // Get client info
var is_gecko	= ((clientPC.indexOf('gecko')!=-1) && (clientPC.indexOf('spoofer')==-1)
								&& (clientPC.indexOf('khtml') == -1) && (clientPC.indexOf('netscape/7.0')==-1));
var is_safari = ((clientPC.indexOf('AppleWebKit')!=-1) && (clientPC.indexOf('spoofer')==-1));
var is_khtml = (navigator.vendor == 'KDE' || ( document.childNodes && !document.all && !navigator.taintEnabled ));
if (clientPC.indexOf('opera')!=-1) {
	var is_opera = true;
	var is_opera_preseven = (window.opera && !document.childNodes);
	var is_opera_seven = (window.opera && document.childNodes);
}

/**
 * apply tagOpen/tagClose to selection in textarea, use sampleText instead
 * of selection if there is none copied and adapted from phpBB
 *
 * @author phpBB development team
 * @author MediaWiki development team
 * @author Andreas Gohr <andi@splitbrain.org>
 * @author Jim Raynor <jim_raynor@web.de>
 */
function insert_tags(tagOpen, tagClose) {
	var txtarea = document.getElementById('tags-txtarea');
	var sampleText = '';
	// IE
	if(document.selection	&& !is_gecko) {
		var theSelection = document.selection.createRange().text;
		var replaced = true;
		if(!theSelection){
			replaced = false;
			theSelection=sampleText;
		}
		txtarea.focus();
 
		// This has change
		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') {
		var 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=sampleText;}
		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,sampleText);
		copy_alertText=copy_alertText.replace(re2,tagOpen+sampleText+tagClose);
		var text;
		if (sampleText) {
			text=prompt(copy_alertText);
		} else {
			text="";
		}
		if(!text) { text=sampleText;}
		text=tagOpen+text+tagClose;
		//append to the end
		txtarea.value += "\n"+text;

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

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

//
// Shortcut for smiley adding code
//
function insert_smiley(code) {
	
	insert_tags(' '+code+' ', '');
	
}

//
// Set focus to input field
//
function set_focus(field_id) {
	
	document.getElementById(field_id).focus();
	
}

//
// Insert database table name
//
function insert_table(name) {
	
	insert_tags(name, '');
	
}

//
// Toggle ACP general configuration panels
//
function acp_config_toggle(panel) {
	
	if ( !document.getElementsByTagName || !panel )
		return;
	
	var panels = document.getElementsByTagName('div');
	
	for ( var i = 0; i < panels.length; i++ ) {
		
		if ( panels[i].className == 'adminconfigtablecell' )
			panels[i].style.display = 'none';
		
	}
	
	var selected = document.getElementById(panel);

	if ( selected != null )
		selected.style.display = 'block';
	
}

function acp_config_onload() {

	var hash = self.document.location.hash.substring(1);

	if ( hash )
		acp_config_toggle(hash);
	else
		acp_config_toggle('general');


}

//
// Standards compliant external windows
//
function init_external() {
	
	if ( !document.getElementsByTagName )
		return;
	
	var anchors = document.getElementsByTagName('a');
	
	for ( var i = 0; i < anchors.length; i++ ) {
		
		var anchor = anchors[i];
		if ( anchor.href && anchor.rel && (' '+anchor.rel+' ').indexOf(' external ') != -1 )
			anchor.target = '_blank';
		
	}
	
}

//
// Avatars resize function
//
function resize_avatars(allowed_width, allowed_height) {
	
	if ( !document.getElementsByTagName )
		return;
	
	var avatars = document.getElementsByTagName('img');
	
	for ( var i = 0; i < avatars.length; i++ ) {
		
		if ( avatars[i].className == 'usebb-avatar' ) {
			
			var avatar = avatars[i];
			
			if ( allowed_width > 0 && avatar.width > allowed_width )
				avatar.width = allowed_width;
			
			if ( allowed_height > 0 && avatar.height > allowed_height )
				avatar.height = allowed_height;
			
		}
		
	}
	
}