基于mootools插件实现遮罩层新手引导

插件代码

/* 
--- 
name: UserGuider 
authors: 
- Garland Yang 
requires: [Core/Class, Core/Element.Style, Core/Element.Event, Core/Element.Dimensions] 
version: 
- 1.0 
... 
*/ 
var UserGuider = new Class({ 
Implements: [Options, Events], 
options: { 
UserGuideList: new Array(), 
step: 0 
}, 
initialize: function (options) { 
this.setOptions(options); 
this.step = this.options.step; 
}, 
createGuide: function () { 
var self = this; 
$$('.userGuide').dispose(); 
var UserGuideList = this.options.UserGuideList; 
var config = UserGuideList[this.step]; 
if (config == null) { 
return; 
} 
var ele = $$('.' + config.className)[0]; 
if (ele == null) { 
return; 
} 
$$('.' + config.className + ' a').set('target', '_blank'); 
var top = ele.getCoordinates().top; 
var right = ele.getCoordinates().right; 
var bottom = ele.getCoordinates().bottom; 
var left = ele.getCoordinates().left; 
var width = ele.getCoordinates().width; 
var height = ele.getCoordinates().height; 
var x = window.getScrollSize().x; 
var y = window.getScrollSize().y; 
this.createShadowDiv('shadowTop', left, 0, width, top); 
this.createShadowDiv('shadowRight', right, 0, x - right, y); 
this.createShadowDiv('shadowButtom', left, bottom, width, y - bottom); 
this.createShadowDiv('shadowLeft', 0, 0, left, y); 
if (config.src != null) { 
this.createUserGuideImg(left + config.imgLeft, top + config.imgTop, config.src); 
} 
if (config.navUrl != null) { 
this.createUserGuideNavImg(right - 50, bottom, config.navUrl); 
} 
if (this.step > 0) { 
this.createUserButton('userguide_undo', 'UserGuide/undo.png', this.step - 1); 
} 
if (this.step < UserGuideList.length - 1) { 
this.createUserButton('userguide_next', 'UserGuide/next.png', this.step + 1); 
} 
this.createUserButton('userguide_finish', 'UserGuide/finish.png', 10000); 
this.changeUserGuideButton(); 
if (config.src2 != null) { 
this.createUserGuideImg(left + config.imgLeft2, top + config.imgTop2, config.src2); 
} 
return this; 
}, 
createShadowDiv: function (id, left, top, width, height) { 
var self = this; 
var div = new Element('div'); 
div.set('id', id); 
div.addClass('userGuide'); 
div.setStyles({ 
left: left + 'px', 
top: top + 'px', 
width: width + 'px', 
height: height + 'px', 
position: 'absolute', 
'background-color': '#000', 
'z-index': 100, 
opacity: 0.5, 
filter: 'alpha(opacity=50)' 
}); 
$$('body').adopt(div); 
return this; 
}, 
createUserGuideNavImg: function (left, top, nav) { 
var self = this; 
var img = new Element('img'); 
img.addClass('userGuideNav'); 
img.addClass('userGuide'); 
img.setStyles({ 
cursor: 'pointer', 
'z-index': 10000, 
left: left + 'px', 
top: top + 'px', 
position: 'absolute' 
}); 
img.set('src', 'userguide/nav.png'); 
img.addEvent('click', function () { 
window.open(nav); 
}); 
$$('body').adopt(img); 
return this; 
}, 
createUserGuideImg: function (left, top, src) { 
var self = this; 
var img = new Element('img'); 
img.addClass('userGuideImg'); 
img.addClass('userGuide'); 
img.setStyles({ 
'z-index': 1000, 
left: left + 'px', 
top: top + 'px', 
position: 'absolute' 
}); 
img.set('src', src); 
$$('body').adopt(img); 
return this; 
}, 
createUserButton: function (className, src, thisStep) { 
var self = this; 
var img = new Element('img'); 
img.addClass(className); 
img.addClass('userGuide'); 
img.setStyles({ 
cursor: 'pointer', 
'z-index': 1000000, 
position: 'absolute' 
}); 
img.set('src', src); 
img.addEvent('click', function () { 
self.step = thisStep; 
self.createGuide(); 
}); 
$$('body').adopt(img); 
return this; 
}, 
changeUserGuideButton: function () { 
var self = this; 
var size = window.getSize(); 
var scroll = window.getScroll(); 
var scrollSize = window.getScrollSize(); 
$$('.userguide_finish').setStyles({ 
left: (size.x - 220) + 'px', 
top: (size.y + scroll.y - 80) + 'px' 
}); 
$$('.userguide_next').setStyles({ 
left: (size.x - 420) + 'px', 
top: (size.y + scroll.y - 80) + 'px' 
}); 
$$('.userguide_undo').setStyles({ 
left: (size.x - 620) + 'px', 
top: (size.y + scroll.y - 80) + 'px' 
}); 
return this; 
} 
});

调用方式

var UserGuider; 
var UserGuideList = new Array({ 
className: 'step0', 
src: 'UserGuide/step0.png', 
imgTop: 50, 
imgLeft: 50 
}, { 
className: 'step1', 
src: 'UserGuide/step1.png', 
imgTop: -150, 
imgLeft: 0, 
src2: 'UserGuide/pic/1.gif', 
imgTop2: 210, 
imgLeft2: 450 
}, { 
className: 'step2', 
src: 'UserGuide/step2.png', 
imgTop: 0, 
imgLeft: -600, 
navUrl: '/MyMessageCenter.aspx', 
src2: 'UserGuide/pic/2.gif', 
imgTop2: 110, 
imgLeft2: 80 
}, { 
className: 'step3', 
src: 'UserGuide/step3.png', 
imgTop: -150, 
imgLeft: 130, 
navUrl: '/MyTaskSearch.aspx', 
src2: 'UserGuide/pic/3.png', 
imgTop2: -120, 
imgLeft2: 250 
}); 
window.addEvent('domready',function(){ 
UserGuider = new UserGuider({ 
UserGuideList: UserGuideList 
}) 
UserGuider.createGuide(); 
});