/*
Script: Element.Style.js
Contains methods for interacting with the styles of Elements in a fashionable way.

License:
MIT-style license.
*/

Element.Properties.styles = {set: function(styles){
this.setStyles(styles);
}};

Element.Properties.opacity = {

set: function(opacity, novisibility){
if (!novisibility){
if (opacity == 0){
if (this.style.visibility != 'hidden') this.style.visibility = 'hidden';
} else {
if (this.style.visibility != 'visible') this.style.visibility = 'visible';
}
}
if (!this.currentStyle || !this.currentStyle.hasLayout) this.style.zoom = 1;
if (Browser.Engine.trident) this.style.filter = (opacity == 1) ? '' : 'alpha(opacity=' + opacity * 100 + ')';
this.style.opacity = opacity;
this.store('opacity', opacity);
},

get: function(){
return this.retrieve('opacity', 1);
}

};

Element.implement({

setOpacity: function(value){
return this.set('opacity', value, true);
},

getOpacity: function(){
return this.get('opacity');
},

setStyle: function(property, value){
switch (property){
case 'opacity': return this.set('opacity', parseFloat(value));
case 'float': property = (Browser.Engine.trident) ? 'styleFloat' : 'cssFloat';
}
property = property.camelCase();
if ($type(value) != 'string'){
var map = (Element.Styles.get(property) || '@').split(' ');
value = $splat(value).map(function(val, i){
if (!map[i]) return '';
return ($type(val) == 'number') ? map[i].replace('@', Math.round(val)) : val;
}).join(' ');
} else if (value == String(Number(value))){
value = Math.round(value);
}
this.style[property] = value;
return this;
},

getStyle: function(property){
switch (property){
case 'opacity': return this.get('opacity');
case 'float': property = (Browser.Engine.trident) ? 'styleFloat' : 'cssFloat';
}
property = property.camelCase();
var result = this.style[property];
if (!$chk(result)){
result = [];
for (var style in Element.ShortStyles){
if (property != style) continue;
for (var s in Element.ShortStyles[style]) result.push(this.getStyle(s));
return result.join(' ');
}
result = this.getComputedStyle(property);
}
if (result){
result = String(result);
var color = result.match(/rgba?\([\d\s,]+\)/);
if (color) result = result.replace(color[0], color[0].rgbToHex());
}
if (Browser.Engine.presto || (Browser.Engine.trident && !$chk(parseInt(result)))){
if (property.test(/^(height|width)$/)){
var values = (property == 'width') ? ['left', 'right'] : ['top', 'bottom'], size = 0;
values.each(function(value){
size += this.getStyle('border-' + value + '-width').toInt() + this.getStyle('padding-' + value).toInt();
}, this);
return this['offset' + property.capitalize()] - size + 'px';
}
if (Browser.Engine.presto && String(result).test('px')) return result;
if (property.test(/(border(.+)Width|margin|padding)/)) return '0px';
}
return result;
},

setStyles: function(styles){
for (var style in styles) this.setStyle(style, styles[style]);
return this;
},

getStyles: function(){
var result = {};
Array.each(arguments, function(key){
result[key] = this.getStyle(key);
}, this);
return result;
}

});

Element.Styles = new Hash({
left: '@px', top: '@px', bottom: '@px', right: '@px',
width: '@px', height: '@px', maxWidth: '@px', maxHeight: '@px', minWidth: '@px', minHeight: '@px',
backgroundColor: 'rgb(@, @, @)', backgroundPosition: '@px @px', color: 'rgb(@, @, @)',
fontSize: '@px', letterSpacing: '@px', lineHeight: '@px', clip: 'rect(@px @px @px @px)',
margin: '@px @px @px @px', padding: '@px @px @px @px', border: '@px @ rgb(@, @, @) @px @ rgb(@, @, @) @px @ rgb(@, @, @)',
borderWidth: '@px @px @px @px', borderStyle: '@ @ @ @', borderColor: 'rgb(@, @, @) rgb(@, @, @) rgb(@, @, @) rgb(@, @, @)',
zIndex: '@', 'zoom': '@', fontWeight: '@', textIndent: '@px', opacity: '@'
});

Element.ShortStyles = {margin: {}, padding: {}, border: {}, borderWidth: {}, borderStyle: {}, borderColor: {}};

['Top', 'Right', 'Bottom', 'Left'].each(function(direction){
var Short = Element.ShortStyles;
var All = Element.Styles;
['margin', 'padding'].each(function(style){
var sd = style + direction;
Short[style][sd] = All[sd] = '@px';
});
var bd = 'border' + direction;
Short.border[bd] = All[bd] = '@px @ rgb(@, @, @)';
var bdw = bd + 'Width', bds = bd + 'Style', bdc = bd + 'Color';
Short[bd] = {};
Short.borderWidth[bdw] = Short[bd][bdw] = All[bdw] = '@px';
Short.borderStyle[bds] = Short[bd][bds] = All[bds] = '@';
Short.borderColor[bdc] = Short[bd][bdc] = All[bdc] = 'rgb(@, @, @)';
});