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<title>Example: Drag - Interaction Groups</title>
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<h1>Example: Drag - Interaction Groups</h1>
<div class="yui3-g">
<div class="yui3-u-3-4">
<div id="main">
<div class="content"><div class="intro">
<p>This example shows a simple drag interaction that doesn't require a drop interaction.</p>
</div>
<div class="example">
<style>
.slot {
border: 2px solid #808080;
background-color: #CDCDCD;
color: #666666;
text-align: center;
position: relative;
float: left;
margin: 4px;
width: 60px;
height: 60px;
z-index: 0;
}
.player {
border: 2px solid #808080;
color: #ffffff;
text-align: center;
position: relative;
float: left;
margin: 4px;
width: 60px;
height: 60px;
top: 150px;
z-index: 1;
cursor: move;
}
#pt1 {
clear: both;
}
.bottom {
top: 50px;
}
#pt1, #pt2 {
background-color: #71241A;
}
#pb1, #pb2 {
background-color: #004C6D;
}
#pboth1, #pboth2 {
background-color: #FFA928;
}
#workarea {
position: relative;
height: 300px;
width: 500px;
}
#workarea .yui3-dd-drop-active-valid {
border: 2px solid green;
}
#workarea .yui3-dd-drop-over {
background-color: green;
}
#workarea .yui3-dd-drop-active-invalid {
border: 2px solid red;
}
</style>
<div id="workarea">
<div class="slot" id="t1">1</div>
<div class="slot bottom" id="b1">3</div>
<div class="slot bottom" id="b2">4</div>
<div class="slot bottom" id="b3">5</div>
<div class="slot bottom" id="b4">6</div>
<div class="slot" id="t2">2</div>
<div class="player" id="pt1">1</div>
<div class="player" id="pt2">2</div>
<div class="player" id="pb1">3</div>
<div class="player" id="pb2">4</div>
<div class="player" id="pboth1">5</div>
<div class="player" id="pboth2">6</div>
</div>
<script>
YUI().use('dd-drop', 'dd-proxy', 'dd-constrain', function(Y) {
var slots = Y.one('#workarea').all('.slot');
Y.each(slots, function(v, k) {
var id = v.get('id'), groups = ['two'];
switch (id) {
case 't1':
case 't2':
groups = ['one'];
break;
}
var drop = new Y.DD.Drop({
node: v,
groups: groups
});
});
var players = Y.one('#workarea').all('.player');
Y.each(players, function(v, k) {
var id = v.get('id'), groups = ['one', 'two'];
switch (id) {
case 'pt1':
case 'pt2':
groups = ['one'];
break;
case 'pb1':
case 'pb2':
groups = ['two'];
break;
}
var drag = new Y.DD.Drag({
node: v,
groups: groups
}).plug(Y.Plugin.DDProxy, {
moveOnEnd: false
}).plug(Y.Plugin.DDConstrained, {
constrain2node: '#workarea'
});
drag.on('drag:start', function() {
var p = this.get('dragNode'),
n = this.get('node');
n.setStyle('opacity', .25);
if (!this._playerStart) {
this._playerStart = this.nodeXY;
}
p.set('innerHTML', n.get('innerHTML'));
p.setStyles({
backgroundColor: n.getStyle('backgroundColor'),
color: n.getStyle('color'),
opacity: .65
});
});
drag.on('drag:end', function() {
var n = this.get('node');
n.setStyle('opacity', '1');
});
drag.on('drag:drophit', function(e) {
var xy = e.drop.get('node').getXY();
this.get('node').setXY(xy, Y.UA.ie);
});
drag.on('drag:dropmiss', function(e) {
if (this._playerStart) {
this.get('node').setXY(this._playerStart, Y.UA.ie);
this._playerStart = null;
}
});
});
});
</script>
</div>
<h3 id="setting-up-the-work-area">Setting up the Work Area</h3>
<p>First we need to create the work area, players (drags) and slots (drops).</p>
<pre class="code prettyprint"><div id="workarea">
<div class="slot" id="t1">1</div>
<div class="slot bottom" id="b1">3</div>
<div class="slot bottom" id="b2">4</div>
<div class="slot bottom" id="b3">5</div>
<div class="slot bottom" id="b4">6</div>
<div class="slot" id="t2">2</div>
<div class="player" id="pt1">1</div>
<div class="player" id="pt2">2</div>
<div class="player" id="pb1">3</div>
<div class="player" id="pb2">4</div>
<div class="player" id="pboth1">5</div>
<div class="player" id="pboth2">6</div>
</div></pre>
<p>Now we give them some CSS to make them visible.</p>
<pre class="code prettyprint">.slot {
border: 2px solid #808080;
background-color: #CDCDCD;
color: #666666;
text-align: center;
position: relative;
float: left;
margin: 4px;
width: 60px;
height: 60px;
z-index: 0;
}
.player {
border: 2px solid #808080;
color: #ffffff;
text-align: center;
position: relative;
float: left;
margin: 4px;
width: 60px;
height: 60px;
top: 150px;
z-index: 1;
cursor: move;
}
#pt1 {
clear: both;
}
.bottom {
top: 50px;
}
#pt1, #pt2 {
background-color: #71241A;
}
#pb1, #pb2 {
background-color: #004C6D;
}
#pboth1, #pboth2 {
background-color: #FFA928;
}
#workarea {
position: relative;
height: 300px;
width: 500px;
}
#workarea .yui3-dd-drop-active-valid {
border: 2px solid green;
}
#workarea .yui3-dd-drop-over {
background-color: green;
}
#workarea .yui3-dd-drop-active-invalid {
border: 2px solid red;
}</pre>
<h4 id="setting-up-the-yui-instance">Setting up the YUI Instance</h4>
<p>Now we need to create our YUI instance and tell it to load the <code>dd-drop</code>, <code>dd-proxy</code> and <code>dd-constrain</code> modules.</p>
<pre class="code prettyprint">YUI().use('dd-drop', 'dd-proxy', 'dd-constrain');</pre>
<h4 id="setting-up-the-drop-targets">Setting up the Drop Targets</h4>
<p>Now that we have a YUI instance with the requested modules, we are going to create our Drop Targets.</p>
<pre class="code prettyprint">YUI().use('dd-drop', 'dd-proxy', 'dd-constrain', function(Y) {
//Get all the nodes with the class of .slot under #workarea
var slots = Y.one('#workarea').all('.slot');
//Loop through them
Y.each(slots, function(v, k) {
var id = v.get('id'), groups = ['two'];
//Assign them to different groups
switch (id) {
case 't1':
case 't2':
groups = ['one'];
break;
}
//Create the Drop object
var drop = new Y.DD.Drop({
node: v,
//With the new groups array as a config option
groups: groups
});
});
});</pre>
<h4 id="setting-up-the-drag-nodes">Setting up the Drag Nodes</h4>
<p>Now we need to create the Drag Nodes and assign them to the proper group.</p>
<pre class="code prettyprint">YUI().use('dd-drop', 'dd-proxy', 'dd-constrain', function(Y) {
//Snipped
var players = Y.one('#workarea').all('.player');
Y.each(players, function(v, k) {
var id = v.get('id'), groups = ['one', 'two'];
switch (id) {
case 'pt1':
case 'pt2':
groups = ['one'];
break;
case 'pb1':
case 'pb2':
groups = ['two'];
break;
}
var drag = new Y.DD.Drag({
node: v,
//Assign the Groups
groups: groups,
//Use Intersect Mode for the Target Calculations
dragMode: 'intersect',
}).plug(Y.Plugin.DDProxy, {
//We don't want the node to move on end drag
moveOnEnd: false
}).plug(Y.Plugin.DDConstrained, {
//Keep me inside the workarea
constrain2node: '#workarea'
});
});</pre>
<h4 id="handling-the-drops-and-moments">Handling the Drops and Moments</h4>
<p>Now we are going to listen for the following Drag Events: <code>drag:start, drag:end, drag:drophit, drag:dropmiss</code></p>
<pre class="code prettyprint">drag.on('drag:start', function() {
//In this event we setup some styles to make the nodes look pretty
var p = this.get('dragNode'),
n = this.get('node');
n.setStyle('opacity', .25);
if (!this._playerStart) {
this._playerStart = this.nodeXY;
}
//Put the Drag's HTML inside the proxy
p.set('innerHTML', n.get('innerHTML'));
//set some styles on the proxy
p.setStyles({
backgroundColor: n.getStyle('backgroundColor'),
color: n.getStyle('color'),
opacity: .65
});
});
drag.on('drag:end', function() {
//Undo some of the styles from the start
var n = this.get('node');
n.setStyle('opacity', '1');
});
drag.on('drag:drophit', function(e) {
//If we drop on a target, move to its position
var xy = e.drop.get('node').getXY();
this.get('node').setXY(xy);
});
drag.on('drag:dropmiss', function(e) {
//If we miss a target, move back to our start position
if (this._playerStart) {
this.get('node').setXY(this._playerStart);
this._playerStart = null;
}
});</pre>
<h4 id="full-javascript-code">Full Javascript Code</h4>
<pre class="code prettyprint">YUI().use('dd-drop', 'dd-proxy', 'dd-constrain', function(Y) {
var slots = Y.one('#workarea').all('.slot');
Y.each(slots, function(v, k) {
var id = v.get('id'), groups = ['two'];
switch (id) {
case 't1':
case 't2':
groups = ['one'];
break;
}
var drop = new Y.DD.Drop({
node: v,
groups: groups
});
});
var players = Y.one('#workarea').all('.player');
Y.each(players, function(v, k) {
var id = v.get('id'), groups = ['one', 'two'];
switch (id) {
case 'pt1':
case 'pt2':
groups = ['one'];
break;
case 'pb1':
case 'pb2':
groups = ['two'];
break;
}
var drag = new Y.DD.Drag({
node: v,
groups: groups
}).plug(Y.Plugin.DDProxy, {
moveOnEnd: false
}).plug(Y.Plugin.DDConstrained, {
constrain2node: '#workarea'
});
drag.on('drag:start', function() {
var p = this.get('dragNode'),
n = this.get('node');
n.setStyle('opacity', .25);
if (!this._playerStart) {
this._playerStart = this.nodeXY;
}
p.set('innerHTML', n.get('innerHTML'));
p.setStyles({
backgroundColor: n.getStyle('backgroundColor'),
color: n.getStyle('color'),
opacity: .65
});
});
drag.on('drag:end', function() {
var n = this.get('node');
n.setStyle('opacity', '1');
});
drag.on('drag:drophit', function(e) {
var xy = e.drop.get('node').getXY();
this.get('node').setXY(xy, Y.UA.ie);
});
drag.on('drag:dropmiss', function(e) {
if (this._playerStart) {
this.get('node').setXY(this._playerStart, Y.UA.ie);
this._playerStart = null;
}
});
});
});</pre>
</div>
</div>
</div>
<div class="yui3-u-1-4">
<div class="sidebar">
<div id="toc" class="sidebox">
<div class="hd">
<h2 class="no-toc">Table of Contents</h2>
</div>
<div class="bd">
<ul class="toc">
<li>
<a href="#setting-up-the-work-area">Setting up the Work Area</a>
<ul class="toc">
<li>
<a href="#setting-up-the-yui-instance">Setting up the YUI Instance</a>
</li>
<li>
<a href="#setting-up-the-drop-targets">Setting up the Drop Targets</a>
</li>
<li>
<a href="#setting-up-the-drag-nodes">Setting up the Drag Nodes</a>
</li>
<li>
<a href="#handling-the-drops-and-moments">Handling the Drops and Moments</a>
</li>
<li>
<a href="#full-javascript-code">Full Javascript Code</a>
</li>
</ul>
</li>
</ul>
</div>
</div>
<div class="sidebox">
<div class="hd">
<h2 class="no-toc">Examples</h2>
</div>
<div class="bd">
<ul class="examples">
<li data-description="A simple drag interaction that doesn't require a drop interaction.">
<a href="simple-drag.html">Simple Drag</a>
</li>
<li data-description="How to apply the Drag Plugin to a node.">
<a href="drag-plugin.html">Drag - Node plugin</a>
</li>
<li data-description="A simple proxy drag interaction that doesn't require a drop interaction.">
<a href="proxy-drag.html">Drag - Proxy</a>
</li>
<li data-description="How to constrain a draggable Node to another Node's region.">
<a href="constrained-drag.html">Drag - Constrained to a Region</a>
</li>
<li data-description="Using interaction groups, this example demonstrates how to tie into the Drag & Drop Utility's interesting moments to provide visual affordances for the current drag operation.">
<a href="groups-drag.html">Drag - Interaction Groups</a>
</li>
<li data-description="The use of the drag shim when dragging nodes over other troublesome nodes.">
<a href="shim-drag.html">Using the Drag Shim</a>
</li>
<li data-description="How to use the Drop Target events to code your application.">
<a href="drop-code.html">Using Drop Based Coding</a>
</li>
<li data-description="How you can use the DD Scroll plugin to scroll the browser window as you drag.">
<a href="winscroll.html">Window Scrolling</a>
</li>
<li data-description="How to use DD.Delegate to create a scalable solution which supports multiple draggable items.">
<a href="delegate.html">Drag Delegation</a>
</li>
<li data-description="Using DD.Delegate to support dragging multiple items and dropping them onto a Drop Target.">
<a href="delegate-drop.html">Drag Delegation with a Drop Target</a>
</li>
<li data-description="How to use Drag plugins with a DD Delegate based solution.">
<a href="delegate-plugins.html">Using Drag Plugins with Delegate</a>
</li>
<li data-description="This example shows how to make a sortable list using Custom Event Bubbling.">
<a href="list-drag.html">List Reorder w/Bubbling</a>
</li>
<li data-description="This example shows how to make a sortable list using Custom Event Bubbling and Node Scrolling.">
<a href="scroll-list.html">List Reorder w/Scrolling</a>
</li>
<li data-description="How to make an animated node a Drop target.">
<a href="anim-drop.html">Animated Drop Targets</a>
</li>
<li data-description="Example Photo Browser application.">
<a href="photo-browser.html">Photo Browser</a>
</li>
<li data-description="Portal style example using Drag & Drop Event Bubbling and Animation.">
<a href="portal-drag.html">Portal Style Example</a>
</li>
</ul>
</div>
</div>
<div class="sidebox">
<div class="hd">
<h2 class="no-toc">Examples That Use This Component</h2>
</div>
<div class="bd">
<ul class="examples">
<li data-description="Working with multiple YUI instances.">
<a href="../yui/yui-multi.html">Multiple Instances</a>
</li>
<li data-description="Use StyleSheet to adjust the CSS rules applying a page theme from user input">
<a href="../stylesheet/stylesheet-theme.html">Adjusting a Page Theme on the Fly</a>
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
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<script>prettyPrint();</script>
<script>
YUI.Env.Tests = {
examples: [],
project: '../assets',
assets: '../assets/dd',
name: 'groups-drag',
title: 'Drag - Interaction Groups',
newWindow: '',
auto: false
};
YUI.Env.Tests.examples.push('simple-drag');
YUI.Env.Tests.examples.push('drag-plugin');
YUI.Env.Tests.examples.push('proxy-drag');
YUI.Env.Tests.examples.push('constrained-drag');
YUI.Env.Tests.examples.push('groups-drag');
YUI.Env.Tests.examples.push('shim-drag');
YUI.Env.Tests.examples.push('drop-code');
YUI.Env.Tests.examples.push('winscroll');
YUI.Env.Tests.examples.push('delegate');
YUI.Env.Tests.examples.push('delegate-drop');
YUI.Env.Tests.examples.push('delegate-plugins');
YUI.Env.Tests.examples.push('list-drag');
YUI.Env.Tests.examples.push('scroll-list');
YUI.Env.Tests.examples.push('anim-drop');
YUI.Env.Tests.examples.push('photo-browser');
YUI.Env.Tests.examples.push('portal-drag');
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