// ۞// text{ encoding:utf-8; bom:no; linebreaks:unix; tabs:4; } // ۞//

/*
 	miscelleneous javascript for corzblog	
	v0.3.9

	;o)
	(or

	© 2003-> (or @ corz.org ;o)

*/

/*

	the functions..

	with some pride I must add, these form functions are TOTALLY PORTABLE!
	no form elements are specifically named in this file, all are calculated at run-time.
	so, you can re-use them wherever you like, even for multiple forms on a single page. have fun!
	I say with pride, becasue JavaScript, for me, is usually a "total nightmare".

*/

/*

	oh joy of DOM!

	these two wee functions make the other functions totally portable. 
	now we can have multiple forms on one page, all with javascript
	enabled buttons, all re-using the same functions. coolness.

	Here we simply grab the element that was clicked, then run UP the DOM 
	tree until we meet a <form> element (the parent form) and return 
	that form's textarea element. 

	figuring this out taught me DOM! ;o)
*/

function GetParentForm(e) {	
	var targ;
	if (!e) var e = window.event;
	if (e.target) targ = e.target; 
	else if (e.srcElement) targ = e.srcElement;
	if (targ.nodeType == 3) { // Safari bug work-around
		targ = targ.parentNode;
	}
	targ = targ.parentNode;
    while (targ.tagName != "FORM") {
		targ = targ.parentNode;
	}
	return targ;
}

// as above, but returns the textarea from the parent form element
// note: passing "e" (event) around everywhere is for firefox. the bugger!
function GetParentFormTextarea(e) {
	return GetParentForm(e).getElementsByTagName('textarea')[0];
}



// place the caret at the bottom. ta epl!
// we use this to put references at the foot of your entry
function scroll(textarea) {
	textarea.focus();
	if (document.layers) {
		textarea.select();
		textarea.blur();
	} else {
		textarea.scrollTop = textarea.scrollHeight - textarea.offsetHeight + 3;
	}
}

// ctrl-z won't usually undo changes made with a JavaScript function, 
// but this will..
var StoredUndo;
function UndoThat(e) {
	textarea = GetParentFormTextarea(e);
	var TmpUndo = textarea.value;
	// there are data integrity disadvantages to this. 
	// but I can't remember what they are, so I enabled it. I like it!
	if (typeof(StoredUndo) != "undefined") { textarea.value = StoredUndo; }
	StoredUndo = TmpUndo; // it will flips back-and-forth
}

var StoredCaret;
var StoredSelLength;
function RestoreCaret(textarea) {
	if (typeof(textarea.StoredCaret) != "undefined") { 
		//var caretPos = textarea.StoredCaret;
		//caretPos.select();
	} else {
		textarea.setSelectionRange(StoredCaret, StoredCaret + StoredSelLength + 11);
	}
}

/*
	bugs:	caret isn't restored correctly with multiple forms, or IE
			on caret restore, textarea scrolls to incorrect position (Firefox)
			Opera gets it right!

*/

/*
	textarea manipulation..

	phpmyadmin started the craze, I think, and it's spawned from there.
	these are all based on stuff lifted from commonly available examples.
	we definitely need to be getting more of this sort of control "out there".
	all the major browsers support these methods these days.

	feel free to lift any of this for your own projects. 
*/

// store the current cursor position..
function storeCaret(textarea) {
	// is it worth storing?..
	if (typeof(textarea.createTextRange) != 'undefined') {
		textarea.caretPos = document.selection.createRange().duplicate();
	}
	StoredCaret = textarea.selectionStart;
}

// insert text at current caret position..
// [will replace current selection]
function InsertText(e, text) {

	// grab the textarea element from the current form..
	textarea = GetParentFormTextarea(e);
	StoredUndo = textarea.value;

	// IE...
	if (typeof(textarea.caretPos) != "undefined") { 
		var caretPos = textarea.caretPos;
		caretPos.text = text;
		caretPos.select();
		textarea.focus();

	// Mozish...
	} else if (typeof(textarea.selectionStart) != "undefined") { 
		var begin = textarea.value.substr(0, textarea.selectionStart);
		var end = textarea.value.substr(textarea.selectionEnd);
		var scrollPos = textarea.scrollTop;
		textarea.value = begin + text + end;
		textarea.scrollTop = scrollPos;
		textarea.setSelectionRange(begin.length + text.length, begin.length + text.length );
		textarea.focus();

	// whateva..
	} else {
		textarea.value += text;
		textarea.focus(textarea.value.length - 1);
	}
}


// surround the selected text with tStart and tEnd.
function SurroundText(e, tStart, tEnd) {

	// grab the textarea element from the current form..
	textarea = GetParentFormTextarea(e);
	StoredUndo = textarea.value;

	// can a valid text range be created?
	if (typeof(textarea.caretPos) != "undefined" && textarea.createTextRange) {
		var caretPos = textarea.caretPos;
		caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ? tStart + caretPos.text + tEnd + ' ' : tStart + caretPos.text + tEnd;
		caretPos.select();
		StoredSelLength = caretPos.text.length;

	// moz wrap..
	} else if (typeof(textarea.selectionStart) != "undefined") {
		var begin = textarea.value.substr(0, textarea.selectionStart);
		var selection = textarea.value.substr(textarea.selectionStart, textarea.selectionEnd - textarea.selectionStart);
		var end = textarea.value.substr(textarea.selectionEnd);
		var newCursorPos = textarea.selectionStart;
		var scrollPos = textarea.scrollTop;
		StoredSelLength = selection.length;
		textarea.value = begin + tStart + selection + tEnd + end;

		if (textarea.setSelectionRange) {
			if (selection.length == 0)
				textarea.setSelectionRange(newCursorPos + tStart.length, newCursorPos + tStart.length);
			else
				textarea.setSelectionRange(newCursorPos, newCursorPos + tStart.length + selection.length + tEnd.length);
			textarea.focus();
		}
		textarea.scrollTop = scrollPos;

	} else { // or else slam it on the end again..
		textarea.value += tStart + tEnd;
		textarea.focus(textarea.value.length - 1);
	}
}

// roll-overs for the style buttons..
// we switch the background (css) image only, hence the gifs :/
function button_highlight(button, baseurl, mode){
	button.style.backgroundImage = "url(" + baseurl + (mode ? "button_hover.gif)" : "button.gif)");
}


// the actual buttons and dials.. 
function linkz(e) {
	var linkz = prompt("type in a valid URL \n(for example: http://corz.org/)","http://corz.org/");
	var titlez = prompt("a pop-up title?..\n","pop-up title");
	SurroundText(e, "[url=\"" + linkz + "\" title=\"" + titlez + "\"]", "[/url]");
}
function codez(e) { 
	var codez = prompt("type in the box text (or paste - multiple lines are okay)","sudo"); 
	var codeztitle = prompt("type in a title for this box?","some code..");
	var insertz = "[block][sm][b]" + codeztitle +"[/b][/sm]\r\n[coderz]" + codez + "[/coderz][/block]";	
	InsertText(e, insertz);
}
function refz(e) {
	SurroundText(e, '[ref]', '[/ref]');
	// we only need to add this one time..
	var ThisTextarea = GetParentFormTextarea(e);
	if (ThisTextarea.value.indexOf("[reftxt]") == -1) {
		var refz ="\r\n\r\n\r\n[reftxt]THIS is the reference text itself.\r\nchange THIS to your own text. do what you like with it.[/reftxt]";
		ThisTextarea.onload = scroll(ThisTextarea);
		ThisTextarea.value += refz;
		RestoreCaret(ThisTextarea);
	}
}
function boldz(e) {
	SurroundText(e, '[b]', '[/b]');
}
function italicz(e) {
	SurroundText(e, '[i]', '[/i]');
}
function bigz(e) {
	SurroundText(e, '[big]', '[/big]');
}
function simcode(e) {
	SurroundText(e, '[code]', '[/code]');
}
function pre(e) {
	SurroundText(e, '[pre]', '[/pre]');
}
function ccc(e) {
	SurroundText(e, '[ccc]<?php\r\n', '\r\n?>[/ccc]');
}
function block(e) {
	SurroundText(e, '[block]', '[/block]');
}
function box(e) {
	SurroundText(e, '[box]', '[/box]');
}
function bbox(e) {
	SurroundText(e, '[bbox]', '[/bbox]');
}
function smallz(e) {
	SurroundText(e, '[sm]', '[/sm]');
}
function tt(e) {
	SurroundText(e, '[tt]', '[/tt]');
}
function h2(e) {
	SurroundText(e, '[h2]', '[/h2]');
}
function h3(e) {
	SurroundText(e, '[h3]', '[/h3]');
}
function h4(e) {
	SurroundText(e, '[h4]', '[/h4]');
}
function h5(e) {
	SurroundText(e, '[h5]', '[/h5]');
}
function h6(e) { 
	SurroundText(e, '[h6]', '[/h6]');
}

function doimage(e) {
	SurroundText(e, '[img]', '[/img]');
}

function symbol(e) {
	var ThisForm = GetParentForm(e);
	var myindex = ThisForm.dropdown.selectedIndex;
	var symbol = ThisForm.dropdown.options[myindex].value;
	InsertText(e, symbol);
}

// smileys..
function smiley_lol(e) {
	InsertText(e, ':lol:');
}
function smiley_ken(e) {
	InsertText(e, ':ken:');
}
function smiley_grin(e) {
	InsertText(e, ':D');
}
function smiley_smile(e) {
	InsertText(e, ':)');
}
function smiley_wink(e) {
	InsertText(e, ';)');
}
function smiley_eek(e) {
	InsertText(e, ':eek:');
}
function smiley_geek(e) {
	InsertText(e, ':geek:');
}
function smiley_roll(e) {
	InsertText(e, ':roll:');
}
function smiley_erm(e) {
	InsertText(e, ':erm:');
}
function smiley_cool(e) {
	InsertText(e, ':cool:');
}
function smiley_blank(e) {
	InsertText(e, ':blank:');
}
function smiley_idea(e) {
	InsertText(e, ':idea:');
}
function smiley_ehh(e) {
	InsertText(e, ':ehh:');
}
function smiley_aargh(e) {
	InsertText(e, ':aargh:');
}
function smiley_evil(e) {
	InsertText(e, ':evil:');
}


// an xhtml-friendly way to refresh a page
function jsPause(seconds, url) { 
	setTimeout( function() { 
		window.location = url; 
	}, seconds * 1000 ); 
}