/**
 * Functions for the ImageEditor interface, used by editor.php only	
 * @author $Author: Wei Zhuo $
 * @version $Id: editor.js 26 2004-03-31 02:35:21Z Wei Zhuo $
 * @package ImageManager
 */

	var current_action = null;
	var actions = ['crop', 'scale', 'rotate', 'measure', 'save'];
	var orginal_width = null, orginal_height=null;
	function toggle(action) 
	{
		if(current_action != action)
		{

			for (var i in actions)
			{
				if(actions[i] != action)
				{
					var tools = document.getElementById('tools_'+actions[i]);
					tools.style.display = 'none';
					var icon = document.getElementById('icon_'+actions[i]);
					icon.className = '';
				}
			}

			current_action = action;
			
			var tools = document.getElementById('tools_'+action);
			tools.style.display = 'block';
			var icon = document.getElementById('icon_'+action);
			icon.className = 'iconActive';

			var indicator = document.getElementById('indicator_image');
			indicator.src = 'img/'+action+'.gif';

			editor.setMode(current_action);

			//constraints on the scale,
			//code by Frédéric Klee <fklee@isuisse.com>
			if(action == 'scale') 
			{
				var theImage = editor.window.document.getElementById('theImage');
				orginal_width = theImage.width ;
				orginal_height = theImage.height;

                var w = document.getElementById('sw');
				w.value = orginal_width ;
				var h = document.getElementById('sh') ;
				h.value = orginal_height ;
			}

		}
	}

	function toggleMarker() 
	{
		var marker = document.getElementById("markerImg");
		
		if(marker != null && marker.src != null) {
			if(marker.src.indexOf("t_black.gif") >= 0)
				marker.src = "img/t_white.gif";
			else
				marker.src = "img/t_black.gif";

			editor.toggleMarker();
		}
	}

	//Togggle constraints, by Frédéric Klee <fklee@isuisse.com>
	function toggleConstraints() 
	{
		var lock = document.getElementById("scaleConstImg");
		var checkbox = document.getElementById("constProp");
		
		if(lock != null && lock.src != null) {
			if(lock.src.indexOf("unlocked2.gif") >= 0)
			{
				lock.src = "img/islocked2.gif";
				checkbox.checked = true;
				checkConstrains('width');

			}
			else
			{
				lock.src = "img/unlocked2.gif";
				checkbox.checked = false;
			}
		}
	}
	
	//check the constraints, by Frédéric Klee <fklee@isuisse.com>
	function checkConstrains(changed) 
	{
		var constrained = document.getElementById('constProp');
		if(constrained.checked) 
		{
			var w = document.getElementById('sw') ;
			var width = w.value ;
			var h = document.getElementById('sh') ;
			var height = h.value ;
			
			if(orginal_width > 0 && orginal_height > 0) 
			{
				if(changed == 'width' && width > 0) 
					h.value = parseInt((width/orginal_width)*orginal_height);
				else if(changed == 'height' && height > 0) 
					w.value = parseInt((height/orginal_height)*orginal_width);
			}
		}
		
		updateMarker('scale') ;
	}


	function updateMarker(mode) 
	{
		if (mode == 'crop')
		{
			var t_cx = document.getElementById('cx');
			var t_cy = document.getElementById('cy');
			var t_cw = document.getElementById('cw');
			var t_ch = document.getElementById('ch');

			editor.setMarker(parseInt(t_cx.value), parseInt(t_cy.value), parseInt(t_cw.value), parseInt(t_ch.value));
		}
		else if(mode == 'scale') {
			var s_sw = document.getElementById('sw');
			var s_sh = document.getElementById('sh');
			editor.setMarker(0, 0, parseInt(s_sw.value), parseInt(s_sh.value));
		}
	}

	
	function rotatePreset(selection) 
	{
		var value = selection.options[selection.selectedIndex].value;
		
		if(value.length > 0 && parseInt(value) != 0) {
			var ra = document.getElementById('ra');
			ra.value = parseInt(value);
		}
	}

	function updateFormat(selection) 
	{
		var selected = selection.options[selection.selectedIndex].value;

		var values = selected.split(",");
		if(values.length >1) {
			updateSlider(parseInt(values[1]));
		}

	}
	function addEvent(obj, evType, fn)
	{ 
		if (obj.addEventListener) { obj.addEventListener(evType, fn, true); return true; } 
		else if (obj.attachEvent) {  var r = obj.attachEvent("on"+evType, fn);  return r;  } 
		else {  return false; } 
	} 

	init = function()
	{
		var bottom = document.getElementById('bottom');
		if(window.opener)
		{
			__dlg_init(bottom);
			__dlg_translate(I18N);
		}
	}

	addEvent(window, 'load', init);