Submitted by gouki on 2008, August 23, 9:02 AM
不多说啥了。在网上看到这篇文章,难得是有详细介绍的。。虽然这个功能我很多时候其实已经在用了,但。那都是直接拿来用的,并没有深刻的研究过。今天这里终于看到一个有注释的,就贴上来看看。
这种用法,是被YAHOO所推荐的。因为。这样的用法,降低了图片的下载量。而且并在一起,并不会给图片的大小增加很多。
原文:http://iruif.cn/swd/?p=25
这里只贴重要的内容。请原作者不要伤心。谢谢
图片文件为:
首先我们得控制好要应用小图标的对象的高度. 否则到时候这个图标就会显示异常了.
比如说我们要给 li 标签使用这个小东东, 那么我们就得写上这样的代码:
CSS代码
- li {
- height: 12px;
- line-height: 12px;
- background: url('icons.gif') 0 -12px;
- padding-top: 0;
- padding-bottom: 0;
- padding-left: 14px;
- margin: 2px 0;
- overflow: hidden;
- }
显然, 把小图标都放到一个文件里的话会带来很多的问题. 比如要限定宽度和高度 [也就是内容会显示不完整] , 并且 padding 也将无法使用 [也就是会影响到 border 等属性的效果] .
当然也有解决办法. 那就是 — 把每个小图标的距离拉开, 或者干脆把他们都拆成单独的文件..
如果不明白可以问问原作者。。。
Tags: css, 背景色, position
Javascript | 评论:0
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Submitted by gouki on 2008, August 22, 9:33 AM
以前我写过一篇测试播放器的文章,当然,在我自己的网站是正常了。正好遇到一朋友需要在supesite下面为每篇文章增加不同的背景音乐,于是调试了一下。由于supesite的编辑器会自动过滤一些标签,最终我的处理方案如下:
1、先选中编辑器状态栏中的“源代码”,点击后,输入
<div id='audio_file' style="display:none">aaa.mp3</div> |
其中,aaa.mp3就是你要播放的音乐文件,默认在根目录下的music目录里,如果你在里面建立了目录hongkong来存放香港歌英,则aaa.mp3就变成了hongkong/aaa.mp3,即在文件名前要加上目录路径,id=audio_file不能被改变,
2、取消选中源代码,继续编辑你的文章,这时候刚才的 aaa.mp3 会显示在内容里,不用理会他,成功后不会影响文件的编辑的。或者,你也可以在文件内容编辑完毕后,再选中源代码,在源代码的最上面加入这一行就行了。
3、在模版里加上相应的代码
XML/HTML代码
- <script language="JavaScript" src="http://www.xxxx.com/public/audioplayer.js"></script>
- <script>
- try
- {
- var audio = document.getElementById('audio_file');
- if(audio.innerText != ''){
- var audio_flash = 'http://www.xxxxx.com/public/player.swf';
- var audio_vars = {};
- audio_vars.soundFile = 'http://www.xxxxx.com/music/' + audio.innerText;
- audio_vars.loop = 'yes';
- audio_vars.autostart = 'yes';
- set_audioplayer( audio_flash , audio_vars );
- }
- }
- catch (e){}
-
- </script>
4、成功……现在测试
具体的代码就不提供了。网上应该是有的下载。。。。只是提供这个解决方法。
演示地址:http://www.l2foto.com/s/?action-viewnews-itemid-4
Tags: supesite, 背景音乐, mp3播放器
Software | 评论:2
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Submitted by gouki on 2008, August 21, 10:49 PM
在mootools的官方网站有一个网页专门用来测试几个框架的速度,大概是:mootools,jquery,prototype,dojo,yui,测试下来jquery的平均速度应该算是最快的。
那个评测下来IE下JS运行速度慢果然是很明显的。同样的测试在IE下面比FF下面,速度慢了一倍左右啊。
不多了。自己测试一下看结果吧。。
http://mootools.net/slickspeed/
Tags: javascript, speed, framework
Javascript | 评论:0
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Submitted by gouki on 2008, August 20, 11:53 PM
1.6版本的zf终于将SOAP放进来了,同时也增加了DOJO的支持。不过我没有想通。为什么那么多的JS框架,最终会选择了DOJO。
这些不是我能够想得通的。还是看看到底更新了什么再说吧。
An overview of new features:
- Dojo Integration
- JSON-RPC
- Dojo Data packing
- Dojo View Helper
- Dijit integration with Zend_Form & Zend_View
- Dojo Library Distribution
- SOAP
- SOAP Server
- SOAP Client
- Autodiscovery
- WSDL access
- WSDL Generation
- Preview of Tooling Project in Laboratory (see /laboratory folder)
- Command Line Interface
- Project Asset Management
- Unit Testing Harness for Controllers
- Lucene 2.3 Index File Format Support
- Zend_Session save handler for Database Tables
- Paginator Component
- Text/Figlet Support
- ReCaptcha Service
- Zend_Config_Xml Attribute Support
- Character Set Option for DB Adapters
- Zend File Transfer Component
- New Media View Helpers (Flash, Quicktime, Object, and Page)
- Support in Zend_Translate for INI File Format
This obviously marks a very important step towards a high-quality, highly tested 1.6 GA release. Thanks to everyone who has contributed to this release in any way: with patches/check ins, documentation/translations, and bug reports.
But our work is not yet over! Let's do our best to bring this release to the breaking point to find areas we can improve the release for General Availability. Based on your feedback we will determine in the next few weeks whether we require additional release candidates, so please provide feedback on our issue tracker (http://framework.zend.com/issues) as soon as you can and ask any questions/post your experiences on the appropriate mailing list.
Again, the Zend Framework community does NOT recommend this release for production use. We do, however, recommend evaluating new features in this release with existing and new applications.
Enjoy 1.6RC1, and see you on the issue tracker, wiki, and mailing lists!
————END————
不知道:Zend File Transfer Component,这个会给我们带来什么样的惊喜?大文件传输还是其他的?下载源码研究一下,哈哈
Tags: soap, zend framework, zf, framework, dojo
PHP Framework | 评论:0
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Submitted by gouki on 2008, August 19, 11:20 PM
原文地址:http://devzone.zend.com/article/3509-Zend_Acl-and-MVC-Integration-Part-I-Basic-Use
原文内容:
By Aldemar Bernal
So, what is wrong with Zend_Acl and the current MVC implementation in the Zend Framework? there is nothing wrong, it is just that it gets not too obvious for developers how to achieve an optimal integration between these two important parts of the framework.
First at all, this article is based on the following Zend Framework Proporsal (link), by this moment this proposal is in Pending Recommendation state.
Well, how it works? There are two key components in this proposal:
- A Front Controller Plugin: This component resolves if the current user has access to the page which is being opened.
- An Action Helper: This component allows you to check whether the current user has access inside a controller.
Based on these two components, let's try them with an example. Let's talk about a website like DevZone, we would need a controller that work with the user management and another one which will deal with article management, as well we need 3 types of users (roles), one for guests, one for writers and another one which will approve the articles; resuming, we have:
Resources:
- user controller.
- article controller.
Roles:
- Guest.
- Writer.
- Admin.
Setting up the Zend_Acl component
After defined what we want to do, the next step will create a Zend_Acl instance which will reflect our model.
/** Creating the ACL object */
require_once 'Zend/Acl.php';
$myAcl = new Zend_Acl();
Creating the roles
Now we create the roles in our Zend_Acl instance.
/** Creating Roles */
require_once 'Zend/Acl/Role.php';
$myAcl->addRole(new Zend_Acl_Role('guest'))
->addRole(new Zend_Acl_Role('writer'), 'guest')
->addRole(new Zend_Acl_Role('admin'), 'writer');
Creating the resources
And then we create the resources needed (one per controller) and their relationship with the roles we created.
/** Creating resources */
require_once 'Zend/Acl/Resource.php';
$myAcl->add(new Zend_Acl_Resource('user'))
->add(new Zend_Acl_Resource('article'));
Creating the permissions
Now that we added the roles and resources to our Zend_Acl instance, it's time to explain what actions must be available to which roles.
- Guest won't have access to edit, add or approve an article.
- Writer won't have access to approve an article.
- Admin will have complete access.
/** Creating permissions */
$myAcl->allow('guest', 'user')
->deny('guest', 'article')
->allow('guest', 'article', 'view')
->allow('writer', 'article', array('add', 'edit'))
->allow('admin', 'article', 'approve');
Creating the access denied view file
We will need to create a view and an action which will address all those denied users, in order to do it, first we create a new action in our error controller:
class ErrorController extends Zend_Controller_Action
{
....
public function deniedAction()
{
}
....
}
And then we create our view file (/application/views/scripts/error/denied.phtml) with some warning message:
<h1>Error</h1>
<h2>Access denied</h2>
<p>You are trying to access an area which you have not allowed.</p>
Finishing the configuration
Okay, we have setup our Zend_Acl configuration, so far, it doesn't look like something new, but the next step is register the controller plugin, this important part takes the Zend_Acl instance we created and then validates it against the current page being accessed by an user.
/** Setting up the front controller */
require_once 'Zend/Controller/Front.php';
$front = Zend_Controller_Front::getInstance();
$front->setControllerDirectory('path/to/controllers');
/** Registering the Plugin object */
require_once 'Zend/Controller/Plugin/Acl.php';
$aclPlugin = new Zend_Controller_Plugin_Acl($myAcl);
$aclPlugin->setRoleName($currentUserRole);
$front->registerPlugin(new Zend_Controller_Plugin_Acl($acl, 'guest'));
/** Dispatching the front controller */
$front->dispatch();
After this configuration is done, once an user enters in our application, depending the role he/she has the page will be displayed or an access denied page will be displayed.
For more information about this you can go to:
Zend_Acl & MVC Integration
and here is a small implementation source code of this:
Source Code
————END————
由于本文并没有什么特别的地方,而且单词也没有什么,故不作翻译。
Tags: framework, zend, mvc, zend_acl
PHP Framework | 评论:0
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