JavaScript DHTML/YUI Library/Event

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Implementing Container Keyboard Shortcuts with KeyListener

 

<!--
Software License Agreement (BSD License)
Copyright (c) 2009, Yahoo! Inc.
All rights reserved.
Redistribution and use of this software in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright notice, this list of conditions and the
      following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
    * Neither the name of Yahoo! Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission of Yahoo! Inc.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Sources of Intellectual Property Included in the YUI Library
YUI is issued by Yahoo! under the BSD license above. Below is a list of certain publicly available software that is the source of intellectual property in YUI, along with the licensing terms that pertain to thosesources of IP. This list is for informational purposes only and is not intended to represent an exhaustive list of third party contributions to the YUI.
    * Douglas Crockford"s JSON parsing and stringifying methods: In the JSON Utility, Douglas Crockford"s JSON parsing and stringifying methods are adapted from work published at JSON.org. The adapted work is in the public domain.
    * Robert Penner"s animation-easing algorithms: In the Animation Utility, YUI makes use of Robert Penner"s algorithms for easing.
    * Geoff Stearns"s SWFObject: In the Charts Control and the Uploader versions through 2.7.0, YUI makes use of Geoff Stearns"s SWFObject v1.5 for Flash Player detection and embedding. More information on SWFObject can be found here (http://blog.deconcept.ru/swfobject/). SWFObject is (c) 2007 Geoff Stearns and is released under the MIT License (http://www.opensource.org/licenses/mit-license.php).
    * Diego Perini"s IEContentLoaded technique: The Event Utility employs a technique developed by Diego Perini and licensed under GPL. YUI"s use of this technique is included under our BSD license with the author"s permission.
-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>

    <meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Implementing Container Keyboard Shortcuts with KeyListener</title>
<style type="text/css">
/*margin and padding on body element
  can introduce errors in determining
  element position and are not recommended;
  we turn them off as a foundation for YUI
  CSS treatments. */
body {
  margin:0;
  padding:0;
}
</style>
<link rel="stylesheet" type="text/css" href="yui_2.7.0b-lib/fonts/fonts-min.css" />
<link rel="stylesheet" type="text/css" href="yui_2.7.0b-lib/container/assets/skins/sam/container.css" />
<script type="text/javascript" src="yui_2.7.0b-lib/yahoo-dom-event/yahoo-dom-event.js"></script>
<script type="text/javascript" src="yui_2.7.0b-lib/dragdrop/dragdrop-min.js"></script>
<script type="text/javascript" src="yui_2.7.0b-lib/container/container-min.js"></script>
<!--there is no custom header content for this example-->
</head>
<body class=" yui-skin-sam">

<h1>Implementing Container Keyboard Shortcuts with KeyListener</h1>
<div class="exampleIntro">
  <p>The KeyListener class integrates with the Container family allowing you to specify specific keys or key combinations to show and hide your containers.</p>
      
</div>
<!--BEGIN SOURCE CODE FOR EXAMPLE  -->
<style>
  #example {height:20em;}
</style>
<script>
YAHOO.namespace("example.container");
function init() {
  // Build panel1 based on markup
  YAHOO.example.container.panel1 = new YAHOO.widget.Panel("panel1", { xy:[350,330], width:"250px", visible: false } );
  
  var kl = new YAHOO.util.KeyListener(document, { keys:27 },                
                          { fn:YAHOO.example.container.panel1.hide,
                          scope:YAHOO.example.container.panel1,
                          correctScope:true }, "keyup" ); 
                          // keyup is used here because Safari won"t recognize the ESC
                          // keydown event, which would normally be used by default
  YAHOO.example.container.panel1.cfg.queueProperty("keylisteners", kl);
  YAHOO.example.container.panel1.render();
  var kl2 = new YAHOO.util.KeyListener(document, { ctrl:true, keys:89 }, 
                           { fn:YAHOO.example.container.panel1.show, 
                           scope:YAHOO.example.container.panel1,
                           correctScope:true } );
  
  kl2.enable();
  YAHOO.util.Event.addListener("show", "click", YAHOO.example.container.panel1.show, YAHOO.example.container.panel1, true);
  YAHOO.util.Event.addListener("hide", "click", YAHOO.example.container.panel1.hide, YAHOO.example.container.panel1, true);
}
YAHOO.util.Event.onDOMReady(init);
</script>
<div>
panel1: 
<button id="show">Show (Ctrl+Y)</button> 
<button id="hide">Hide (Esc)</button>
</div>
<div id="panel1" style="visibility:hidden">
<div class="hd">KeyListener Example Panel</div>
<div class="bd">Press [ESC] to dismiss this Panel.</div>
</div>
<!--END SOURCE CODE FOR EXAMPLE  -->
</body>
</html>
<!-- presentbright.corp.yahoo.ru uncompressed/chunked Thu Feb 19 10:53:11 PST 2009 -->


<A href="http://www.wbex.ru/Code/JavaScriptDownload/yui_2.7.0b.zip">yui_2.7.0b.zip( 4,431 k)</a>


Simple Event Handling and Processing

 
<!--
Software License Agreement (BSD License)
Copyright (c) 2009, Yahoo! Inc.
All rights reserved.
Redistribution and use of this software in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright notice, this list of conditions and the
      following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
    * Neither the name of Yahoo! Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission of Yahoo! Inc.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Sources of Intellectual Property Included in the YUI Library
YUI is issued by Yahoo! under the BSD license above. Below is a list of certain publicly available software that is the source of intellectual property in YUI, along with the licensing terms that pertain to thosesources of IP. This list is for informational purposes only and is not intended to represent an exhaustive list of third party contributions to the YUI.
    * Douglas Crockford"s JSON parsing and stringifying methods: In the JSON Utility, Douglas Crockford"s JSON parsing and stringifying methods are adapted from work published at JSON.org. The adapted work is in the public domain.
    * Robert Penner"s animation-easing algorithms: In the Animation Utility, YUI makes use of Robert Penner"s algorithms for easing.
    * Geoff Stearns"s SWFObject: In the Charts Control and the Uploader versions through 2.7.0, YUI makes use of Geoff Stearns"s SWFObject v1.5 for Flash Player detection and embedding. More information on SWFObject can be found here (http://blog.deconcept.ru/swfobject/). SWFObject is (c) 2007 Geoff Stearns and is released under the MIT License (http://www.opensource.org/licenses/mit-license.php).
    * Diego Perini"s IEContentLoaded technique: The Event Utility employs a technique developed by Diego Perini and licensed under GPL. YUI"s use of this technique is included under our BSD license with the author"s permission.
-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>

    <meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Simple Event Handling and Processing</title>
<style type="text/css">
/*margin and padding on body element
  can introduce errors in determining
  element position and are not recommended;
  we turn them off as a foundation for YUI
  CSS treatments. */
body {
  margin:0;
  padding:0;
}
</style>
<link rel="stylesheet" type="text/css" href="yui_2.7.0b-lib/fonts/fonts-min.css" />
<script type="text/javascript" src="yui_2.7.0b-lib/yahoo-dom-event/yahoo-dom-event.js"></script>
<!--there is no custom header content for this example-->
</head>
<body class=" yui-skin-sam">

<h1>Simple Event Handling and Processing</h1>
<div class="exampleIntro">
  <p>Clicking in the blue box will pop up a "Hello World!" alert window.  Clicking on the first link will take you to the YUI website; clicking on the second link, which has the same <code>href</code> attribute, will pop up an alert instead and not navigate to a new page.</p>
<p>Event Utility is used here to do two things:</p>
<ol>
  <li>Attach the <code>click</code> event handler to the blue box;</li>
  <li>Attach an event handler to the second <code>&lt;a&gt;</code> element that uses <code>YAHOO.util.Event.preventDefault()</code> to prevent the link, when clicked, from navigating to a new page. </li>
</ol>      
</div>
<!--BEGIN SOURCE CODE FOR EXAMPLE  -->
<script>
(function() {
  
//A function that pops up a "Hello World" alert:
var helloWorld = function(e) {
  YAHOO.log("helloWorld function firing.", "info", "example");
  alert("Hello World!");
}
//subscribe the helloWorld function as an event
//handler for the click event on the container
//div:
YAHOO.util.Event.addListener("container", "click", helloWorld);
//A function that pops up an alert and
//prevents the default behavior of the event
//for which it is a handler:
var interceptLink = function(e) {
  YAHOO.util.Event.preventDefault(e);
  YAHOO.log("You clicked on the second YUI link.", "info", "example");
  alert("You clicked on the second YUI link.");
}
//subscribe our interceptLink function
//as a click handler for the second anchor
//element:
YAHOO.util.Event.addListener("secondA", "click", interceptLink);
//log message to indicate that the example is ready:
YAHOO.log("When you begin interacting with the example at left, you"ll see log messages appear here.", "info", "example");
})();
</script>
<style>
#container {background-color:#00CCFF; border:1px dotted black; padding:1em; cursor:pointer;}
</style>
<div id="container">
<p>Click for Hello World alert.</p>
</div>
  <p><a href="http://developer.yahoo.ru/yui" id="firstA">The YUI Library. (Link navigates away from page.)</a></p>
  <p><a href="http://developer.yahoo.ru/yui" id="secondA">The YUI Library. (Link"s default behavior is suppressed.)</a></p>
<!--END SOURCE CODE FOR EXAMPLE  -->
</body>
</html>
<!-- presentbright.corp.yahoo.ru uncompressed/chunked Thu Feb 19 10:53:15 PST 2009 -->


<A href="http://www.wbex.ru/Code/JavaScriptDownload/yui_2.7.0b.zip">yui_2.7.0b.zip( 4,431 k)</a>


Using Custom Events

 

<!--
Software License Agreement (BSD License)
Copyright (c) 2009, Yahoo! Inc.
All rights reserved.
Redistribution and use of this software in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright notice, this list of conditions and the
      following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
    * Neither the name of Yahoo! Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission of Yahoo! Inc.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Sources of Intellectual Property Included in the YUI Library
YUI is issued by Yahoo! under the BSD license above. Below is a list of certain publicly available software that is the source of intellectual property in YUI, along with the licensing terms that pertain to thosesources of IP. This list is for informational purposes only and is not intended to represent an exhaustive list of third party contributions to the YUI.
    * Douglas Crockford"s JSON parsing and stringifying methods: In the JSON Utility, Douglas Crockford"s JSON parsing and stringifying methods are adapted from work published at JSON.org. The adapted work is in the public domain.
    * Robert Penner"s animation-easing algorithms: In the Animation Utility, YUI makes use of Robert Penner"s algorithms for easing.
    * Geoff Stearns"s SWFObject: In the Charts Control and the Uploader versions through 2.7.0, YUI makes use of Geoff Stearns"s SWFObject v1.5 for Flash Player detection and embedding. More information on SWFObject can be found here (http://blog.deconcept.ru/swfobject/). SWFObject is (c) 2007 Geoff Stearns and is released under the MIT License (http://www.opensource.org/licenses/mit-license.php).
    * Diego Perini"s IEContentLoaded technique: The Event Utility employs a technique developed by Diego Perini and licensed under GPL. YUI"s use of this technique is included under our BSD license with the author"s permission.
-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>

    <meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Using Custom Events</title>
<style type="text/css">
/*margin and padding on body element
  can introduce errors in determining
  element position and are not recommended;
  we turn them off as a foundation for YUI
  CSS treatments. */
body {
  margin:0;
  padding:0;
}
</style>
<link rel="stylesheet" type="text/css" href="yui_2.7.0b-lib/fonts/fonts-min.css" />
<script type="text/javascript" src="yui_2.7.0b-lib/yahoo-dom-event/yahoo-dom-event.js"></script>

<!--begin custom header content for this example-->
<style type="text/css">
#container {width:400px; height:100px; padding:10px; border:1px dotted black;background-color:#CCCCCC; cursor:pointer;}
#resizer {width:200px; height:75px; background-color:#00CCFF;}
#subscriberWidth {width:200px; height:75px; margin-top:10px;background-color:#CC9966;}
#subscriberHeight {width:200px; height:75px;  margin-top:10px;background-color:#FF3333;}
</style>

<!--end custom header content for this example-->
</head>
<body class=" yui-skin-sam">

<h1>Using Custom Events</h1>
<div class="exampleIntro">
  <p>Clicking in the grey box resizes the blue <code>&lt;div&gt;</code> within it. We consider this an "interesting moment" in our script, so we create a <a href="/yui/event/#customevent">Custom Event</a> called <code>onSizeChange</code> that fires whenever the blue box is resized. This Custom Event, when fired, publishes the blue box"s new size. <strong>Note:</strong> <code>onSizeChange</code> isn"t a DOM event &mdash; it"s an arbitrary "custom" event that has meaning in the context of our script, and an event that we think other scripts on the page might be interested in knowing about.</p>
<p>One subscriber to our <code>onSizeChange</code> Custom Event looks at the new width and resizes the brown box to match. A second subscriber looks at the blue <code>&lt;div&gt;</code>"s new height and resizes the red box to match. </p>      
</div>
<!--BEGIN SOURCE CODE FOR EXAMPLE  -->
<div id="container">
  <div id="resizer">
    Click anywhere within the grey box 
  to resize me.
  </div>
</div>
<div id="subscriberWidth">
  <strong>Width will resize to match blue 
  box.</strong>
</div>
<div id="subscriberHeight">
  <strong>Height will resize to match blue
  box.</strong>
</div>
<script>
(function() {
  
  //create a new custom event, to be fired
  //when the resizer div"s size is changed
  var onSizeChange = new YAHOO.util.CustomEvent("onSizeChange");
  
  //get local references to dom elements,
  //for convenience
  var container = YAHOO.util.Dom.get("container");
  var resizer = YAHOO.util.Dom.get("resizer");
  
  //when the container is clicked on, change the 
  //dimensions of the resizer -- as long as it appears
  //to be a valid new size (>0 width, >12 height).
  function fnClick(e){
    
    //0,0 point is the top left corner of the container,
    //minus its padding:
    var containerX = YAHOO.util.Dom.getX("container");
    var containerY = YAHOO.util.Dom.getY("container");
    var clickX = YAHOO.util.Event.getPageX(e);
    var clickY = YAHOO.util.Event.getPageY(e);
    //get container padding using Dom"s getStyle():
    var containerPaddingX = parseInt(YAHOO.util.Dom.getStyle("container","padding-left"), 10);
    var containerPaddingY = parseInt(YAHOO.util.Dom.getStyle("container","padding-top"), 10);
    var newWidth = clickX - containerX - containerPaddingX;
    var newHeight = clickY - containerY - containerPaddingY;
    
    //if there is a valid new dimension, we"ll change
    //resizer and fire our custom event
    if ((newWidth > 0)||(newHeight > 12)) {
      //correct new height/width to guarantee
      //minimum of 0x12  
      if (newWidth < 0) {newWidth = 1;}
      if (newHeight < 12) {newHeight = 12;}
      //show new dimensions in resizer:
      YAHOO.util.Dom.get("resizer").innerHTML = "New size: " + newWidth + "x" + newHeight;
      //change the dimensions of resizer, using
      //Dom"s setStyle:
      YAHOO.util.Dom.setStyle("resizer", "width", newWidth + "px");
      YAHOO.util.Dom.setStyle("resizer", "height", newHeight + "px");
       //fire the custom event, passing
       //the new dimensions in as an argument;
       //our subscribers will be able to use this
       //information:
      onSizeChange.fire({width: newWidth, height: newHeight});
    };
    
  }
  
  //listen for clicks on the container
  YAHOO.util.Event.addListener("container", "click", fnClick);
  //a handler to respond to the custom event that
  //we"re firing when the resizer changes size; we"ll
  //resize its width to match the resizer.
  fnSubscriberWidth = function(type, args) {
    var elWidth = YAHOO.util.Dom.get("subscriberWidth");
    var newWidth = args[0].width;
    YAHOO.util.Dom.setStyle(elWidth, "width", (newWidth + "px"));
    elWidth.innerHTML = ("My new width: " + newWidth + "px");
    YAHOO.log("The Custom Event fired; the the new width is " + newWidth + "px.", "info", "example");
  }
  
  //another handler to respond to the custom event that
  //we"re firing when the resizer changes size; this
  //one cares about the height of the resizer.
  fnSubscriberHeight = function(type, args) {
    var elHeight = YAHOO.util.Dom.get("subscriberHeight");
    var newHeight = args[0].height;
    YAHOO.util.Dom.setStyle(elHeight, "height", (newHeight + "px"));
    elHeight.innerHTML = ("My new height: " + newHeight + "px");
    YAHOO.log("The Custom Event fired; the the new height is " + newHeight + "px.", "info", "example");
  }  
  
  //all that remains is to subscribe our
  //handlers to the <code>onSizeChange</code> custom event:
  onSizeChange.subscribe(fnSubscriberWidth);
  onSizeChange.subscribe(fnSubscriberHeight);
  
  
  YAHOO.log("The example has finished loading; as you interact with it, you"ll see log messages appearing here.", "info", "example");
})();
</script>
<!--END SOURCE CODE FOR EXAMPLE  -->
</body>
</html>
<!-- presentbright.corp.yahoo.ru uncompressed/chunked Thu Feb 19 10:53:15 PST 2009 -->


<A href="http://www.wbex.ru/Code/JavaScriptDownload/yui_2.7.0b.zip">yui_2.7.0b.zip( 4,431 k)</a>

Источник — «http://wbex.ru/index.php?title=JavaScript_DHTML/YUI_Library/Event&oldid=3993»