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+ <title>YUI Library Examples: Drag & Drop: Animated Drop Targets</title>
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+ <div id="pagetitle"><h1>YUI Library Examples: Drag & Drop: Animated Drop Targets</h1></div>
+</div>
+<div id="bd">
+
+ <div id="bar-note"><p><strong>Note:</strong> This is YUI 3.x. Looking for <a href="http://developer.yahoo.com/yui/">YUI 2.x</a>?</p></div>
+
+ <div id="yui-main">
+ <div class="yui-b">
+ <div class="yui-ge">
+ <div class="yui-u first example" id="main">
+
+ <h2>Drag & Drop: Animated Drop Targets</h2>
+
+ <div id="example" class="promo">
+ <p>
+ <p>This example will show you how to make an animated node a Drop target.</p>
+ </p>
+
+ <div class="module example-container newWindow">
+ <div id="example-canvas" class="bd">
+
+ <p class="newWindowButton yui-skin-sam">
+ <span id="newWindowLink">
+ <span class="first-child">
+ <a href="anim-drop_source.html" target="_blank">View example in new window.</a>
+ </span>
+ </span>
+ </p>
+
+
+ </div>
+ </div>
+ </div>
+
+ <h3>Setting up the HTML</h3>
+<p>First we will create our HTML.</p>
+<textarea name="code" class="HTML">
+ <div id="dock"></div>
+ <div id="drag">Drag #1</div>
+ <div id="anim1" class="anim">Anim #1</div>
+ <div id="anim2" class="anim">Anim #2</div>
+ <div id="anim3" class="anim">Anim #3</div>
+ <div id="anim4" class="anim">Anim #4</div>
+ <div id="anim5" class="anim">Anim #5</div>
+</textarea>
+<p>Now we give that HTML some CSS to make it visible.</p>
+<textarea name="code" class="CSS">
+.anim {
+ position: relative;
+ height: 50px;
+ width: 100px;
+ border: 1px solid black;
+ background-color: #00B8BF;
+ top: 100px;
+}
+#drag {
+ height: 50px;
+ width: 50px;
+ border: 1px solid black;
+ background-color: #004C6D;
+ color: white;
+ cursor: move;
+ z-index: 5;
+}
+#dock {
+ height: 600px;
+ width: 75px;
+ background-color: #D00050;
+ border: 1px solid black;
+ position: absolute;
+ top: 5px;
+ right: 0px;
+}
+.anim.yui-dd-drop-over {
+ background-color: #EDFF9F;
+}
+.anim.done {
+ background-color: white;
+}
+#drag1.yui-dd-drag-over {
+ opacity: .5;
+ filter: alpha(opacity=50);
+}
+</textarea>
+
+<h3>Setting up the YUI Instance</h3>
+<p>Now we need to create our YUI instance and tell it to load the <code>dd-drop</code>, <code>dd-plugin</code>, <code>dd-drop-plugin</code> and <code>anim</code> modules.</p>
+<textarea name="code" class="JScript">
+YUI().use('dd-drop', 'anim', 'dd-plugin', 'dd-drop-plugin');
+</textarea>
+
+<h3>Making the Node draggable</h3>
+<p>Now that we have a YUI instance with the modules loaded, we need to instantiate the <code>Drag</code> instance on this Node.</p>
+<p>In this example we will be using Node plugins to accomplish our tasks.</p>
+<textarea name="code" class="JScript">
+YUI().use('dd-drop', 'anim', 'dd-plugin', 'dd-drop-plugin', function(Y) {
+ //Get the node #drag
+ var d = Y.Node.get('#drag');
+ d.plug(Y.Plugin.Drag, { dragMode: 'intersect' });
+});
+</textarea>
+
+<h3>Animating the Nodes</h3>
+<p>Now we will setup the Animation sequence that we want to run.</p>
+<textarea name="code" class="JScript">
+ //Get all the div's with the class anim
+ var anims = Y.Node.all('div.anim');
+ var counter = 0;
+ anims.each(function(v, k, items) {
+ //Get a reference to the Node instance
+ var a = v;
+ counter++;
+ //Add the FX plugin
+ a.plug(Y.Plugin.NodeFX);
+ //Add the Drop plugin
+ a.plug(Y.Plugin.Drop);
+
+ //Set the attributes on the animation
+ a.fx.setAttrs({
+ from: {
+ left: 0
+ },
+ to: {
+ curve: function() {
+ var points = [],
+ n = 10;
+
+ for (var i = 0; i < n; ++i) {
+ points.push([
+ Math.floor(Math.random()*Y.DOM.winWidth() - 60 - a.get('offsetWidth')),
+ Math.floor(Math.random()*Y.DOM.winHeight() - a.get('offsetHeight'))
+ ]);
+ }
+ return points;
+ }
+ },
+ //Do the animation 20 times
+ iterations: 20,
+ //Alternate it so it "bounces" across the screen
+ direction: 'alternate',
+ //Give all of them a different duration so we get different speeds.
+ duration: ((counter * 1.75) + 1)
+ });
+ });
+</textarea>
+
+<h3>Making the Node A Target</h3>
+<p>Using the <code>dd-drop-plugin</code>, we now need to make this animated Node a Drop Target.</p>
+<p>To do that, we need to add the plugin after the fx plugin.</p>
+<textarea name="code" class="JScript">
+//Add the FX plugin
+a.plug(Y.Plugin.NodeFX);
+//Add the Drop plugin
+a.plug(Y.Plugin.Drop);
+</textarea>
+
+<h3>Syncing the Target with the Animation</h3>
+<p>The Drop Target needs to be in sync with the animation, since we are changing the height, width, top and left style.</p>
+<p>We do this by adding a listener to the <code>tween</code> event on the animation instance.</p>
+<textarea name="code" class="JScript">
+//on tween of the original anim, we need to sync the drop's shim.
+a.fx.on('tween', function() {
+ //Do we have an active Drag?
+ if (Y.DD.DDM.activeDrag) {
+ //Size this shim
+ this.drop.sizeShim();
+ //Force an over target check since we might not be moving the mouse.
+ Y.Lang.later(0, a, function() {
+ this.drop._handleTargetOver();
+ });
+ }
+}, a);
+</textarea>
+
+<h3>Full example source</h3>
+<textarea name="code" class="JScript">
+YUI().use('dd-drop', 'anim', 'dd-plugin', 'dd-drop-plugin', function(Y) {
+ //Get the node #drag
+ var d = Y.Node.get('#drag');
+ d.plug(Y.plugin.Drag, { dragMode: 'intersect' });
+
+ //Get all the div's with the class anim
+ var anims = Y.Node.all('div.anim');
+ var counter = 0;
+ anims.each(function(v, k) {
+ //Get a reference to the Node instance
+ var a = v;
+ //Add the FX plugin
+ a.plug(Y.Plugin.NodeFX);
+ //Add the Drop plugin
+ a.plug(Y.Plugin.Drop);
+
+ //Set the attributes on the animation
+ a.fx.setAttrs({
+ from: {
+ left: 0
+ },
+ to: {
+ curve: function() {
+ var points = [],
+ n = 10;
+
+ for (var i = 0; i < n; ++i) {
+ points.push([
+ Math.floor(Math.random()*Y.DOM.winWidth() - 60 - a.get('offsetWidth')),
+ Math.floor(Math.random()*Y.DOM.winHeight() - a.get('offsetHeight'))
+ ]);
+ }
+ return points;
+ }
+ },
+ //Do the animation 20 times
+ iterations: 20,
+ //Alternate it so it "bounces" across the screen
+ direction: 'alternate',
+ //Give all of them a different duration so we get different speeds.
+ duration: ((counter * 1.75) + 1)
+ });
+
+ //When this drop is entered, pause the fx
+ a.drop.on('drop:enter', function() {
+ this.fx.pause();
+ }, a);
+ //When the drop is exited, run the fx again
+ a.drop.on('drop:exit', function() {
+ this.fx.run();
+ }, a);
+ //When a drop is on the node, do something special
+ a.drop.on('drop:hit', function(e) {
+ //Stop the animation
+ this.fx.stop();
+ //remove the tween listener
+ this.fx.unsubscribeAll('tween');
+ //move it to the dock
+ this.fx.setAttrs({
+ from: {
+ opacity: 1
+ },
+ to: {
+ height: 50,
+ width: 50,
+ left: function() {
+ var dW = Y.Node.get('body').get('viewportRegion').right;
+ return ((dW - 60)); //Minus 60 for the dock
+ },
+ top: 15,
+ opacity: .5
+ },
+ direction: 'normal',
+ iterations: 1,
+ duration: .5,
+ //We are using reverse above for the "bouncing", reset it here.
+ reverse: false
+ });
+
+ //On end, add a class and destroy the target
+ this.fx.on('end', function() {
+ this.drop.get('node').addClass('done');
+ this.drop.destroy();
+ }, this);
+ //Run this animation
+ this.fx.run();
+
+ //others that were dropped on.
+ Y.each(e.others, function(v, k) {
+ var node = v.get('node');
+ node.fx.run();
+ });
+
+ }, a);
+
+ //on tween of the original anim, we need to sync the drop's shim.
+ a.fx.on('tween', function() {
+ //Do we have an active Drag?
+ if (Y.DD.DDM.activeDrag) {
+ //Size this shim
+ this.drop.sizeShim();
+ //Force an over target check since we might not be moving the mouse.
+ Y.Lang.later(0, a, function() {
+ this.drop._handleTargetOver();
+ });
+ }
+ }, a);
+
+ a.fx.run();
+ });
+});
+</textarea>
+
+ </div>
+ <div class="yui-u sidebar">
+
+
+ <div id="examples" class="mod box4">
+ <div class="hd">
+ <h4>
+ Drag & Drop Examples:</h4>
+ </div>
+ <div class="bd">
+ <ul>
+ <li><a href='../dd/simple-drag.html'>Simple Drag</a></li><li><a href='../dd/drag-plugin.html'>Drag Node Plugin</a></li><li><a href='../dd/proxy-drag.html'>Proxy Drag</a></li><li><a href='../dd/constrained-drag.html'>Drag Constrained to a Region</a></li><li><a href='../dd/groups-drag.html'>Interaction Groups</a></li><li><a href='../dd/shim-drag.html'>Using the Drag Shim</a></li><li class='selected'><a href='../dd/anim-drop.html'>Animated Drop Targets</a></li><li><a href='../dd/drop-code.html'>Drop Based Coding</a></li><li><a href='../dd/winscroll.html'>Window Scrolling</a></li><li><a href='../dd/list-drag.html'>List reorder w/Bubbling</a></li><li><a href='../dd/scroll-list.html'>List reorder w/Scrolling</a></li><li><a href='../dd/portal-drag.html'>Portal Style Example</a></li><li><a href='../dd/photo-browser.html'>Photo Browser</a></li> </ul>
+ </div>
+ </div>
+
+ <div class="mod box4">
+ <div class="hd">
+ <h4>More Drag & Drop Resources:</h4>
+ </div>
+ <div class="bd">
+ <ul>
+ <!-- <li><a href="http://developer.yahoo.com/yui/dd/">User's Guide</a> (external)</li> -->
+ <li><a href="../../api/module_dd.html">API Documentation</a></li>
+</ul>
+ </div>
+ </div>
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