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<div class="highlight" ><pre><span class="c">/**</span>
<span class="c"> * The StyleSheet component is a module for creating and modifying CSS</span>
<span class="c"> * stylesheets.</span>
<span class="c"> *</span>
<span class="c"> * @module stylesheet</span>
<span class="c"> */</span>
<span class="k">var</span> <span class="nx">d</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">config</span><span class="o">.</span><span class="nx">doc</span><span class="o">,</span>
<span class="nx">p</span> <span class="o">=</span> <span class="nx">d</span><span class="o">.</span><span class="nx">createElement</span><span class="o">(</span><span class="s1">'p'</span><span class="o">),</span> <span class="c">// Have to hold the node (see notes)</span>
<span class="c"></span> <span class="nx">workerStyle</span> <span class="o">=</span> <span class="nx">p</span><span class="o">.</span><span class="nx">style</span><span class="o">,</span> <span class="c">// worker style collection</span>
<span class="c"></span> <span class="nx">isString</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">Lang</span><span class="o">.</span><span class="nx">isString</span><span class="o">,</span>
<span class="nx">selectors</span> <span class="o">=</span> <span class="o">{},</span>
<span class="nx">sheets</span> <span class="o">=</span> <span class="o">{},</span>
<span class="nx">floatAttr</span> <span class="o">=</span> <span class="o">(</span><span class="s1">'cssFloat'</span> <span class="k">in</span> <span class="nx">workerStyle</span><span class="o">)</span> <span class="o">?</span> <span class="s1">'cssFloat'</span> <span class="o">:</span> <span class="s1">'styleFloat'</span><span class="o">,</span>
<span class="nx">_toCssText</span><span class="o">,</span>
<span class="nx">_unsetOpacity</span><span class="o">,</span>
<span class="nx">_unsetProperty</span><span class="o">,</span>
<span class="nx">OPACITY</span> <span class="o">=</span> <span class="s1">'opacity'</span><span class="o">,</span>
<span class="nx">FLOAT</span> <span class="o">=</span> <span class="s1">'float'</span><span class="o">,</span>
<span class="nx">EMPTY</span> <span class="o">=</span> <span class="s1">''</span><span class="o">;</span>
<span class="c">// Normalizes the removal of an assigned style for opacity. IE uses the filter</span>
<span class="c">// property.</span>
<span class="c"></span><span class="nx">_unsetOpacity</span> <span class="o">=</span> <span class="o">(</span><span class="nx">OPACITY</span> <span class="k">in</span> <span class="nx">workerStyle</span><span class="o">)</span> <span class="o">?</span>
<span class="k">function</span> <span class="o">(</span><span class="nx">style</span><span class="o">)</span> <span class="o">{</span> <span class="nx">style</span><span class="o">.</span><span class="nx">opacity</span> <span class="o">=</span> <span class="nx">EMPTY</span><span class="o">;</span> <span class="o">}</span> <span class="o">:</span>
<span class="k">function</span> <span class="o">(</span><span class="nx">style</span><span class="o">)</span> <span class="o">{</span> <span class="nx">style</span><span class="o">.</span><span class="nx">filter</span> <span class="o">=</span> <span class="nx">EMPTY</span><span class="o">;</span> <span class="o">};</span>
<span class="c">// Normalizes the removal of an assigned style for a given property. Expands</span>
<span class="c">// shortcut properties if necessary and handles the various names for the float</span>
<span class="c">// property.</span>
<span class="c"></span><span class="nx">workerStyle</span><span class="o">.</span><span class="nx">border</span> <span class="o">=</span> <span class="s2">"1px solid red"</span><span class="o">;</span>
<span class="nx">workerStyle</span><span class="o">.</span><span class="nx">border</span> <span class="o">=</span> <span class="nx">EMPTY</span><span class="o">;</span> <span class="c">// IE doesn't unset child properties</span>
<span class="c"></span><span class="nx">_unsetProperty</span> <span class="o">=</span> <span class="nx">workerStyle</span><span class="o">.</span><span class="nx">borderLeft</span> <span class="o">?</span>
<span class="k">function</span> <span class="o">(</span><span class="nx">style</span><span class="o">,</span><span class="nx">prop</span><span class="o">)</span> <span class="o">{</span>
<span class="k">var</span> <span class="nx">p</span><span class="o">;</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">prop</span> <span class="o">!==</span> <span class="nx">floatAttr</span> <span class="o">&&</span> <span class="nx">prop</span><span class="o">.</span><span class="nx">toLowerCase</span><span class="o">().</span><span class="nx">indexOf</span><span class="o">(</span><span class="nx">FLOAT</span><span class="o">)</span> <span class="o">!=</span> <span class="o">-</span><span class="m">1</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">prop</span> <span class="o">=</span> <span class="nx">floatAttr</span><span class="o">;</span>
<span class="o">}</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">isString</span><span class="o">(</span><span class="nx">style</span><span class="o">[</span><span class="nx">prop</span><span class="o">]))</span> <span class="o">{</span>
<span class="nx">switch</span> <span class="o">(</span><span class="nx">prop</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">case</span> <span class="nx">OPACITY</span><span class="o">:</span>
<span class="nx">case</span> <span class="s1">'filter'</span> <span class="o">:</span> <span class="nx">_unsetOpacity</span><span class="o">(</span><span class="nx">style</span><span class="o">);</span> <span class="k">break</span><span class="o">;</span>
<span class="nx">case</span> <span class="s1">'font'</span> <span class="o">:</span>
<span class="nx">style</span><span class="o">.</span><span class="nx">font</span> <span class="o">=</span> <span class="nx">style</span><span class="o">.</span><span class="nx">fontStyle</span> <span class="o">=</span> <span class="nx">style</span><span class="o">.</span><span class="nx">fontVariant</span> <span class="o">=</span>
<span class="nx">style</span><span class="o">.</span><span class="nx">fontWeight</span> <span class="o">=</span> <span class="nx">style</span><span class="o">.</span><span class="nx">fontSize</span> <span class="o">=</span> <span class="nx">style</span><span class="o">.</span><span class="nx">lineHeight</span> <span class="o">=</span>
<span class="nx">style</span><span class="o">.</span><span class="nx">fontFamily</span> <span class="o">=</span> <span class="nx">EMPTY</span><span class="o">;</span>
<span class="k">break</span><span class="o">;</span>
<span class="nx">default</span> <span class="o">:</span>
<span class="k">for</span> <span class="o">(</span><span class="nx">p</span> <span class="k">in</span> <span class="nx">style</span><span class="o">)</span> <span class="o">{</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">p</span><span class="o">.</span><span class="nx">indexOf</span><span class="o">(</span><span class="nx">prop</span><span class="o">)</span> <span class="o">===</span> <span class="m">0</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">style</span><span class="o">[</span><span class="nx">p</span><span class="o">]</span> <span class="o">=</span> <span class="nx">EMPTY</span><span class="o">;</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="o">}</span> <span class="o">:</span>
<span class="k">function</span> <span class="o">(</span><span class="nx">style</span><span class="o">,</span><span class="nx">prop</span><span class="o">)</span> <span class="o">{</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">prop</span> <span class="o">!==</span> <span class="nx">floatAttr</span> <span class="o">&&</span> <span class="nx">prop</span><span class="o">.</span><span class="nx">toLowerCase</span><span class="o">().</span><span class="nx">indexOf</span><span class="o">(</span><span class="nx">FLOAT</span><span class="o">)</span> <span class="o">!=</span> <span class="o">-</span><span class="m">1</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">prop</span> <span class="o">=</span> <span class="nx">floatAttr</span><span class="o">;</span>
<span class="o">}</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">isString</span><span class="o">(</span><span class="nx">style</span><span class="o">[</span><span class="nx">prop</span><span class="o">]))</span> <span class="o">{</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">prop</span> <span class="o">===</span> <span class="nx">OPACITY</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">_unsetOpacity</span><span class="o">(</span><span class="nx">style</span><span class="o">);</span>
<span class="o">}</span> <span class="k">else</span> <span class="o">{</span>
<span class="nx">style</span><span class="o">[</span><span class="nx">prop</span><span class="o">]</span> <span class="o">=</span> <span class="nx">EMPTY</span><span class="o">;</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="o">};</span>
<span class="c">/**</span>
<span class="c"> * Create an instance of StyleSheet to encapsulate a css stylesheet.</span>
<span class="c"> * The constructor can be called using function or constructor syntax.</span>
<span class="c"> * <pre><code>var sheet = Y.StyleSheet(..);</pre></code></span>
<span class="c"> * or</span>
<span class="c"> * <pre><code>var sheet = new Y.StyleSheet(..);</pre></code></span>
<span class="c"> *</span>
<span class="c"> * The first parameter passed can be any of the following things:</span>
<span class="c"> * <ul></span>
<span class="c"> * <li>The desired string name to register a new empty sheet</li></span>
<span class="c"> * <li>The string name of an existing StyleSheet instance</li></span>
<span class="c"> * <li>The unique guid generated for an existing StyleSheet instance</li></span>
<span class="c"> * <li>The id of an existing <code>&lt;link&gt;</code> or <code>&lt;style&gt;</code> node</li></span>
<span class="c"> * <li>The node reference for an existing <code>&lt;link&gt;</code> or <code>&lt;style&gt;</code> node</li></span>
<span class="c"> * <li>The Y.Node instance wrapping an existing <code>&lt;link&gt;</code> or <code>&lt;style&gt;</code> node</li></span>
<span class="c"> * <li>A chunk of css text to create a new stylesheet from</li></span>
<span class="c"> * </ul></span>
<span class="c"> *</span>
<span class="c"> * <p>If a string is passed, StyleSheet will first look in its static name</span>
<span class="c"> * registry for an existing sheet, then in the DOM for an element with that id.</span>
<span class="c"> * If neither are found and the string contains the { character, it will be</span>
<span class="c"> * used as a the initial cssText for a new StyleSheet. Otherwise, a new empty</span>
<span class="c"> * StyleSheet is created, assigned the string value as a name, and registered</span>
<span class="c"> * statically by that name.</p></span>
<span class="c"> *</span>
<span class="c"> * <p>The optional second parameter is a string name to register the sheet as.</span>
<span class="c"> * This param is largely useful when providing a node id/ref or chunk of css</span>
<span class="c"> * text to create a populated instance.</p></span>
<span class="c"> * </span>
<span class="c"> * @class StyleSheet</span>
<span class="c"> * @constructor</span>
<span class="c"> * @param seed {String|HTMLElement|Node} a style or link node, its id, or a</span>
<span class="c"> * name or guid of a StyleSheet, or a string of css text</span>
<span class="c"> * @param name {String} (optional) name to register instance for future static</span>
<span class="c"> * access</span>
<span class="c"> */</span>
<span class="k">function</span> <span class="nx">StyleSheet</span><span class="o">(</span><span class="nx">seed</span><span class="o">,</span> <span class="nx">name</span><span class="o">)</span> <span class="o">{</span>
<span class="k">var</span> <span class="nx">head</span><span class="o">,</span>
<span class="nx">node</span><span class="o">,</span>
<span class="nx">sheet</span><span class="o">,</span>
<span class="nx">cssRules</span> <span class="o">=</span> <span class="o">{},</span>
<span class="nx">_rules</span><span class="o">,</span>
<span class="nx">_insertRule</span><span class="o">,</span>
<span class="nx">_deleteRule</span><span class="o">,</span>
<span class="nx">i</span><span class="o">,</span><span class="nx">r</span><span class="o">,</span><span class="nx">sel</span><span class="o">;</span>
<span class="c">// Factory or constructor</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(!(</span><span class="k">this</span> <span class="k">instanceof</span> <span class="nx">StyleSheet</span><span class="o">))</span> <span class="o">{</span>
<span class="k">return</span> <span class="k">new</span> <span class="nx">StyleSheet</span><span class="o">(</span><span class="nx">seed</span><span class="o">,</span><span class="nx">name</span><span class="o">);</span>
<span class="o">}</span>
<span class="c">// Extract the DOM node from Node instances</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(</span><span class="nx">seed</span><span class="o">)</span> <span class="o">{</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">Y</span><span class="o">.</span><span class="nx">Node</span> <span class="o">&&</span> <span class="nx">seed</span> <span class="k">instanceof</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">Node</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">node</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">Node</span><span class="o">.</span><span class="nx">getDOMNode</span><span class="o">(</span><span class="nx">seed</span><span class="o">);</span>
<span class="o">}</span> <span class="k">else</span> <span class="k">if</span> <span class="o">(</span><span class="nx">seed</span><span class="o">.</span><span class="nx">nodeName</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">node</span> <span class="o">=</span> <span class="nx">seed</span><span class="o">;</span>
<span class="c">// capture the DOM node if the string is an id</span>
<span class="c"></span> <span class="o">}</span> <span class="k">else</span> <span class="k">if</span> <span class="o">(</span><span class="nx">isString</span><span class="o">(</span><span class="nx">seed</span><span class="o">))</span> <span class="o">{</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">seed</span> <span class="o">&&</span> <span class="nx">sheets</span><span class="o">[</span><span class="nx">seed</span><span class="o">])</span> <span class="o">{</span>
<span class="k">return</span> <span class="nx">sheets</span><span class="o">[</span><span class="nx">seed</span><span class="o">];</span>
<span class="o">}</span>
<span class="nx">node</span> <span class="o">=</span> <span class="nx">d</span><span class="o">.</span><span class="nx">getElementById</span><span class="o">(</span><span class="nx">seed</span><span class="o">.</span><span class="nx">replace</span><span class="o">(</span><span class="sr">/^#/</span><span class="o">,</span><span class="nx">EMPTY</span><span class="o">));</span>
<span class="o">}</span>
<span class="c">// Check for the StyleSheet in the static registry</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(</span><span class="nx">node</span> <span class="o">&&</span> <span class="nx">sheets</span><span class="o">[</span><span class="nx">Y</span><span class="o">.</span><span class="nx">stamp</span><span class="o">(</span><span class="nx">node</span><span class="o">)])</span> <span class="o">{</span>
<span class="k">return</span> <span class="nx">sheets</span><span class="o">[</span><span class="nx">Y</span><span class="o">.</span><span class="nx">stamp</span><span class="o">(</span><span class="nx">node</span><span class="o">)];</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="c">// Create a style node if necessary</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(!</span><span class="nx">node</span> <span class="o">||</span> <span class="o">!</span><span class="sr">/^(?:style|link)$/i</span><span class="o">.</span><span class="nx">test</span><span class="o">(</span><span class="nx">node</span><span class="o">.</span><span class="nx">nodeName</span><span class="o">))</span> <span class="o">{</span>
<span class="nx">node</span> <span class="o">=</span> <span class="nx">d</span><span class="o">.</span><span class="nx">createElement</span><span class="o">(</span><span class="s1">'style'</span><span class="o">);</span>
<span class="nx">node</span><span class="o">.</span><span class="nx">type</span> <span class="o">=</span> <span class="s1">'text/css'</span><span class="o">;</span>
<span class="o">}</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">isString</span><span class="o">(</span><span class="nx">seed</span><span class="o">))</span> <span class="o">{</span>
<span class="c">// Create entire sheet from seed cssText</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(</span><span class="nx">seed</span><span class="o">.</span><span class="nx">indexOf</span><span class="o">(</span><span class="s1">'{'</span><span class="o">)</span> <span class="o">!=</span> <span class="o">-</span><span class="m">1</span><span class="o">)</span> <span class="o">{</span>
<span class="c">// Not a load-time fork because low run-time impact and IE fails</span>
<span class="c"></span> <span class="c">// test for s.styleSheet at page load time (oddly)</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(</span><span class="nx">node</span><span class="o">.</span><span class="nx">styleSheet</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">node</span><span class="o">.</span><span class="nx">styleSheet</span><span class="o">.</span><span class="nx">cssText</span> <span class="o">=</span> <span class="nx">seed</span><span class="o">;</span>
<span class="o">}</span> <span class="k">else</span> <span class="o">{</span>
<span class="nx">node</span><span class="o">.</span><span class="nx">appendChild</span><span class="o">(</span><span class="nx">d</span><span class="o">.</span><span class="nx">createTextNode</span><span class="o">(</span><span class="nx">seed</span><span class="o">));</span>
<span class="o">}</span>
<span class="o">}</span> <span class="k">else</span> <span class="k">if</span> <span class="o">(!</span><span class="nx">name</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">name</span> <span class="o">=</span> <span class="nx">seed</span><span class="o">;</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="c">// Make sure the node is attached to the appropriate head element</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(!</span><span class="nx">node</span><span class="o">.</span><span class="nx">parentNode</span> <span class="o">||</span> <span class="nx">node</span><span class="o">.</span><span class="nx">parentNode</span><span class="o">.</span><span class="nx">nodeName</span><span class="o">.</span><span class="nx">toLowerCase</span><span class="o">()</span> <span class="o">!==</span> <span class="s1">'head'</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">head</span> <span class="o">=</span> <span class="o">(</span><span class="nx">node</span><span class="o">.</span><span class="nx">ownerDocument</span> <span class="o">||</span> <span class="nx">d</span><span class="o">).</span><span class="nx">getElementsByTagName</span><span class="o">(</span><span class="s1">'head'</span><span class="o">)[</span><span class="m">0</span><span class="o">];</span>
<span class="c">// styleSheet isn't available on the style node in FF2 until appended</span>
<span class="c"></span> <span class="c">// to the head element. style nodes appended to body do not affect</span>
<span class="c"></span> <span class="c">// change in Safari.</span>
<span class="c"></span> <span class="nx">head</span><span class="o">.</span><span class="nx">appendChild</span><span class="o">(</span><span class="nx">node</span><span class="o">);</span>
<span class="o">}</span>
<span class="c">// Begin setting up private aliases to the important moving parts</span>
<span class="c"></span> <span class="c">// 1. The stylesheet object</span>
<span class="c"></span> <span class="c">// IE stores StyleSheet under the "styleSheet" property</span>
<span class="c"></span> <span class="c">// Safari doesn't populate sheet for xdomain link elements</span>
<span class="c"></span> <span class="nx">sheet</span> <span class="o">=</span> <span class="nx">node</span><span class="o">.</span><span class="nx">sheet</span> <span class="o">||</span> <span class="nx">node</span><span class="o">.</span><span class="nx">styleSheet</span><span class="o">;</span>
<span class="c">// 2. The style rules collection</span>
<span class="c"></span> <span class="c">// IE stores the rules collection under the "rules" property</span>
<span class="c"></span> <span class="nx">_rules</span> <span class="o">=</span> <span class="nx">sheet</span> <span class="o">&&</span> <span class="o">(</span><span class="s1">'cssRules'</span> <span class="k">in</span> <span class="nx">sheet</span><span class="o">)</span> <span class="o">?</span> <span class="s1">'cssRules'</span> <span class="o">:</span> <span class="s1">'rules'</span><span class="o">;</span>
<span class="c">// 3. The method to remove a rule from the stylesheet</span>
<span class="c"></span> <span class="c">// IE supports removeRule</span>
<span class="c"></span> <span class="nx">_deleteRule</span> <span class="o">=</span> <span class="o">(</span><span class="s1">'deleteRule'</span> <span class="k">in</span> <span class="nx">sheet</span><span class="o">)</span> <span class="o">?</span>
<span class="k">function</span> <span class="o">(</span><span class="nx">i</span><span class="o">)</span> <span class="o">{</span> <span class="nx">sheet</span><span class="o">.</span><span class="nx">deleteRule</span><span class="o">(</span><span class="nx">i</span><span class="o">);</span> <span class="o">}</span> <span class="o">:</span>
<span class="k">function</span> <span class="o">(</span><span class="nx">i</span><span class="o">)</span> <span class="o">{</span> <span class="nx">sheet</span><span class="o">.</span><span class="nx">removeRule</span><span class="o">(</span><span class="nx">i</span><span class="o">);</span> <span class="o">};</span>
<span class="c">// 4. The method to add a new rule to the stylesheet</span>
<span class="c"></span> <span class="c">// IE supports addRule with different signature</span>
<span class="c"></span> <span class="nx">_insertRule</span> <span class="o">=</span> <span class="o">(</span><span class="s1">'insertRule'</span> <span class="k">in</span> <span class="nx">sheet</span><span class="o">)</span> <span class="o">?</span>
<span class="k">function</span> <span class="o">(</span><span class="nx">sel</span><span class="o">,</span><span class="nx">css</span><span class="o">,</span><span class="nx">i</span><span class="o">)</span> <span class="o">{</span> <span class="nx">sheet</span><span class="o">.</span><span class="nx">insertRule</span><span class="o">(</span><span class="nx">sel</span><span class="o">+</span><span class="s1">' {'</span><span class="o">+</span><span class="nx">css</span><span class="o">+</span><span class="s1">'}'</span><span class="o">,</span><span class="nx">i</span><span class="o">);</span> <span class="o">}</span> <span class="o">:</span>
<span class="k">function</span> <span class="o">(</span><span class="nx">sel</span><span class="o">,</span><span class="nx">css</span><span class="o">,</span><span class="nx">i</span><span class="o">)</span> <span class="o">{</span> <span class="nx">sheet</span><span class="o">.</span><span class="nx">addRule</span><span class="o">(</span><span class="nx">sel</span><span class="o">,</span><span class="nx">css</span><span class="o">,</span><span class="nx">i</span><span class="o">);</span> <span class="o">};</span>
<span class="c">// 5. Initialize the cssRules map from the node</span>
<span class="c"></span> <span class="c">// xdomain link nodes forbid access to the cssRules collection, so this</span>
<span class="c"></span> <span class="c">// will throw an error.</span>
<span class="c"></span> <span class="c">// TODO: research alternate stylesheet, @media</span>
<span class="c"></span> <span class="k">for</span> <span class="o">(</span><span class="nx">i</span> <span class="o">=</span> <span class="nx">sheet</span><span class="o">[</span><span class="nx">_rules</span><span class="o">].</span><span class="nx">length</span> <span class="o">-</span> <span class="m">1</span><span class="o">;</span> <span class="nx">i</span> <span class="o">>=</span> <span class="m">0</span><span class="o">;</span> <span class="o">--</span><span class="nx">i</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">r</span> <span class="o">=</span> <span class="nx">sheet</span><span class="o">[</span><span class="nx">_rules</span><span class="o">][</span><span class="nx">i</span><span class="o">];</span>
<span class="nx">sel</span> <span class="o">=</span> <span class="nx">r</span><span class="o">.</span><span class="nx">selectorText</span><span class="o">;</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">cssRules</span><span class="o">[</span><span class="nx">sel</span><span class="o">])</span> <span class="o">{</span>
<span class="nx">cssRules</span><span class="o">[</span><span class="nx">sel</span><span class="o">].</span><span class="nx">style</span><span class="o">.</span><span class="nx">cssText</span> <span class="o">+=</span> <span class="s1">';'</span> <span class="o">+</span> <span class="nx">r</span><span class="o">.</span><span class="nx">style</span><span class="o">.</span><span class="nx">cssText</span><span class="o">;</span>
<span class="nx">_deleteRule</span><span class="o">(</span><span class="nx">i</span><span class="o">);</span>
<span class="o">}</span> <span class="k">else</span> <span class="o">{</span>
<span class="nx">cssRules</span><span class="o">[</span><span class="nx">sel</span><span class="o">]</span> <span class="o">=</span> <span class="nx">r</span><span class="o">;</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="c">// Cache the instance by the generated Id</span>
<span class="c"></span> <span class="nx">StyleSheet</span><span class="o">.</span><span class="nx">register</span><span class="o">(</span><span class="nx">Y</span><span class="o">.</span><span class="nx">stamp</span><span class="o">(</span><span class="nx">node</span><span class="o">),</span><span class="k">this</span><span class="o">);</span>
<span class="c">// Register the instance by name if provided or defaulted from seed</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(</span><span class="nx">name</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">StyleSheet</span><span class="o">.</span><span class="nx">register</span><span class="o">(</span><span class="nx">name</span><span class="o">,</span><span class="k">this</span><span class="o">);</span>
<span class="o">}</span>
<span class="c">// Public API</span>
<span class="c"></span> <span class="nx">Y</span><span class="o">.</span><span class="nx">mix</span><span class="o">(</span><span class="k">this</span><span class="o">,{</span>
<span class="c">/**</span>
<span class="c"> * Get the unique stamp for this StyleSheet instance</span>
<span class="c"> *</span>
<span class="c"> * @method getId</span>
<span class="c"> * @return {Number} the static id</span>
<span class="c"> */</span>
<span class="nx">getId</span> <span class="o">:</span> <span class="k">function</span> <span class="o">()</span> <span class="o">{</span> <span class="k">return</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">stamp</span><span class="o">(</span><span class="nx">node</span><span class="o">);</span> <span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Enable all the rules in the sheet</span>
<span class="c"> *</span>
<span class="c"> * @method enable</span>
<span class="c"> * @return {StyleSheet}</span>
<span class="c"> * @chainable</span>
<span class="c"> */</span>
<span class="nx">enable</span> <span class="o">:</span> <span class="k">function</span> <span class="o">()</span> <span class="o">{</span> <span class="nx">sheet</span><span class="o">.</span><span class="nx">disabled</span> <span class="o">=</span> <span class="kc">false</span><span class="o">;</span> <span class="k">return</span> <span class="k">this</span><span class="o">;</span> <span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Disable all the rules in the sheet. Rules may be changed while the</span>
<span class="c"> * StyleSheet is disabled.</span>
<span class="c"> *</span>
<span class="c"> * @method disable</span>
<span class="c"> * @return {StyleSheet}</span>
<span class="c"> * @chainable</span>
<span class="c"> */</span>
<span class="nx">disable</span> <span class="o">:</span> <span class="k">function</span> <span class="o">()</span> <span class="o">{</span> <span class="nx">sheet</span><span class="o">.</span><span class="nx">disabled</span> <span class="o">=</span> <span class="kc">true</span><span class="o">;</span> <span class="k">return</span> <span class="k">this</span><span class="o">;</span> <span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Returns false if the StyleSheet is disabled. Otherwise true.</span>
<span class="c"> *</span>
<span class="c"> * @method isEnabled</span>
<span class="c"> * @return {Boolean}</span>
<span class="c"> */</span>
<span class="nx">isEnabled</span> <span class="o">:</span> <span class="k">function</span> <span class="o">()</span> <span class="o">{</span> <span class="k">return</span> <span class="o">!</span><span class="nx">sheet</span><span class="o">.</span><span class="nx">disabled</span><span class="o">;</span> <span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * <p>Set style properties for a provided selector string.</span>
<span class="c"> * If the selector includes commas, it will be split into individual</span>
<span class="c"> * selectors and applied accordingly. If the selector string does not</span>
<span class="c"> * have a corresponding rule in the sheet, it will be added.</p></span>
<span class="c"> *</span>
<span class="c"> * <p>The object properties in the second parameter must be the JavaScript</span>
<span class="c"> * names of style properties. E.g. fontSize rather than font-size.</p></span>
<span class="c"> *</span>
<span class="c"> * <p>The float style property will be set by any of &quot;float&quot;,</span>
<span class="c"> * &quot;styleFloat&quot;, or &quot;cssFloat&quot;.</p></span>
<span class="c"> *</span>
<span class="c"> * @method set</span>
<span class="c"> * @param sel {String} the selector string to apply the changes to</span>
<span class="c"> * @param css {Object} Object literal of style properties and new values</span>
<span class="c"> * @return {StyleSheet}</span>
<span class="c"> * @chainable</span>
<span class="c"> */</span>
<span class="nx">set</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">sel</span><span class="o">,</span><span class="nx">css</span><span class="o">)</span> <span class="o">{</span>
<span class="k">var</span> <span class="nx">rule</span> <span class="o">=</span> <span class="nx">cssRules</span><span class="o">[</span><span class="nx">sel</span><span class="o">],</span>
<span class="nx">multi</span> <span class="o">=</span> <span class="nx">sel</span><span class="o">.</span><span class="nx">split</span><span class="o">(</span><span class="sr">/\s*,\s*/</span><span class="o">),</span><span class="nx">i</span><span class="o">,</span>
<span class="nx">idx</span><span class="o">;</span>
<span class="c">// IE's addRule doesn't support multiple comma delimited selectors</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(</span><span class="nx">multi</span><span class="o">.</span><span class="nx">length</span> <span class="o">></span> <span class="m">1</span><span class="o">)</span> <span class="o">{</span>
<span class="k">for</span> <span class="o">(</span><span class="nx">i</span> <span class="o">=</span> <span class="nx">multi</span><span class="o">.</span><span class="nx">length</span> <span class="o">-</span> <span class="m">1</span><span class="o">;</span> <span class="nx">i</span> <span class="o">>=</span> <span class="m">0</span><span class="o">;</span> <span class="o">--</span><span class="nx">i</span><span class="o">)</span> <span class="o">{</span>
<span class="k">this</span><span class="o">.</span><span class="nx">set</span><span class="o">(</span><span class="nx">multi</span><span class="o">[</span><span class="nx">i</span><span class="o">],</span> <span class="nx">css</span><span class="o">);</span>
<span class="o">}</span>
<span class="k">return</span> <span class="k">this</span><span class="o">;</span>
<span class="o">}</span>
<span class="c">// Some selector values can cause IE to hang</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(!</span><span class="nx">StyleSheet</span><span class="o">.</span><span class="nx">isValidSelector</span><span class="o">(</span><span class="nx">sel</span><span class="o">))</span> <span class="o">{</span>
<span class="nx">Y</span><span class="o">.</span><span class="nx">log</span><span class="o">(</span><span class="s2">"Invalid selector '"</span><span class="o">+</span><span class="nx">sel</span><span class="o">+</span><span class="s2">"' passed to set (ignoring)."</span><span class="o">,</span><span class="s1">'error'</span><span class="o">,</span><span class="s1">'StyleSheet'</span><span class="o">);</span>
<span class="k">return</span> <span class="k">this</span><span class="o">;</span>
<span class="o">}</span>
<span class="c">// Opera throws an error if there's a syntax error in assigned</span>
<span class="c"></span> <span class="c">// cssText. Avoid this using a worker style collection, then</span>
<span class="c"></span> <span class="c">// assigning the resulting cssText.</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(</span><span class="nx">rule</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">rule</span><span class="o">.</span><span class="nx">style</span><span class="o">.</span><span class="nx">cssText</span> <span class="o">=</span> <span class="nx">StyleSheet</span><span class="o">.</span><span class="nx">toCssText</span><span class="o">(</span><span class="nx">css</span><span class="o">,</span><span class="nx">rule</span><span class="o">.</span><span class="nx">style</span><span class="o">.</span><span class="nx">cssText</span><span class="o">);</span>
<span class="o">}</span> <span class="k">else</span> <span class="o">{</span>
<span class="nx">idx</span> <span class="o">=</span> <span class="nx">sheet</span><span class="o">[</span><span class="nx">_rules</span><span class="o">].</span><span class="nx">length</span><span class="o">;</span>
<span class="nx">css</span> <span class="o">=</span> <span class="nx">StyleSheet</span><span class="o">.</span><span class="nx">toCssText</span><span class="o">(</span><span class="nx">css</span><span class="o">);</span>
<span class="c">// IE throws an error when attempting to addRule(sel,'',n)</span>
<span class="c"></span> <span class="c">// which would crop up if no, or only invalid values are used</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(</span><span class="nx">css</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">_insertRule</span><span class="o">(</span><span class="nx">sel</span><span class="o">,</span> <span class="nx">css</span><span class="o">,</span> <span class="nx">idx</span><span class="o">);</span>
<span class="c">// Safari replaces the rules collection, but maintains the</span>
<span class="c"></span> <span class="c">// rule instances in the new collection when rules are</span>
<span class="c"></span> <span class="c">// added/removed</span>
<span class="c"></span> <span class="nx">cssRules</span><span class="o">[</span><span class="nx">sel</span><span class="o">]</span> <span class="o">=</span> <span class="nx">sheet</span><span class="o">[</span><span class="nx">_rules</span><span class="o">][</span><span class="nx">idx</span><span class="o">];</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="k">return</span> <span class="k">this</span><span class="o">;</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * <p>Unset style properties for a provided selector string, removing</span>
<span class="c"> * their effect from the style cascade.</p></span>
<span class="c"> *</span>
<span class="c"> * <p>If the selector includes commas, it will be split into individual</span>
<span class="c"> * selectors and applied accordingly. If there are no properties</span>
<span class="c"> * remaining in the rule after unsetting, the rule is removed.</p></span>
<span class="c"> *</span>
<span class="c"> * <p>The style property or properties in the second parameter must be the</span>
<span class="c"> * JavaScript style property names. E.g. fontSize rather than font-size.</p></span>
<span class="c"> *</span>
<span class="c"> * <p>The float style property will be unset by any of &quot;float&quot;,</span>
<span class="c"> * &quot;styleFloat&quot;, or &quot;cssFloat&quot;.</p></span>
<span class="c"> *</span>
<span class="c"> * @method unset</span>
<span class="c"> * @param sel {String} the selector string to apply the changes to</span>
<span class="c"> * @param css {String|Array} style property name or Array of names</span>
<span class="c"> * @return {StyleSheet}</span>
<span class="c"> * @chainable</span>
<span class="c"> */</span>
<span class="nx">unset</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">sel</span><span class="o">,</span><span class="nx">css</span><span class="o">)</span> <span class="o">{</span>
<span class="k">var</span> <span class="nx">rule</span> <span class="o">=</span> <span class="nx">cssRules</span><span class="o">[</span><span class="nx">sel</span><span class="o">],</span>
<span class="nx">multi</span> <span class="o">=</span> <span class="nx">sel</span><span class="o">.</span><span class="nx">split</span><span class="o">(</span><span class="sr">/\s*,\s*/</span><span class="o">),</span>
<span class="nx">remove</span> <span class="o">=</span> <span class="o">!</span><span class="nx">css</span><span class="o">,</span>
<span class="nx">rules</span><span class="o">,</span> <span class="nx">i</span><span class="o">;</span>
<span class="c">// IE's addRule doesn't support multiple comma delimited selectors</span>
<span class="c"></span> <span class="c">// so rules are mapped internally by atomic selectors</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(</span><span class="nx">multi</span><span class="o">.</span><span class="nx">length</span> <span class="o">></span> <span class="m">1</span><span class="o">)</span> <span class="o">{</span>
<span class="k">for</span> <span class="o">(</span><span class="nx">i</span> <span class="o">=</span> <span class="nx">multi</span><span class="o">.</span><span class="nx">length</span> <span class="o">-</span> <span class="m">1</span><span class="o">;</span> <span class="nx">i</span> <span class="o">>=</span> <span class="m">0</span><span class="o">;</span> <span class="o">--</span><span class="nx">i</span><span class="o">)</span> <span class="o">{</span>
<span class="k">this</span><span class="o">.</span><span class="nx">unset</span><span class="o">(</span><span class="nx">multi</span><span class="o">[</span><span class="nx">i</span><span class="o">],</span> <span class="nx">css</span><span class="o">);</span>
<span class="o">}</span>
<span class="k">return</span> <span class="k">this</span><span class="o">;</span>
<span class="o">}</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">rule</span><span class="o">)</span> <span class="o">{</span>
<span class="k">if</span> <span class="o">(!</span><span class="nx">remove</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">css</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nb">Array</span><span class="o">(</span><span class="nx">css</span><span class="o">);</span>
<span class="nx">workerStyle</span><span class="o">.</span><span class="nx">cssText</span> <span class="o">=</span> <span class="nx">rule</span><span class="o">.</span><span class="nx">style</span><span class="o">.</span><span class="nx">cssText</span><span class="o">;</span>
<span class="k">for</span> <span class="o">(</span><span class="nx">i</span> <span class="o">=</span> <span class="nx">css</span><span class="o">.</span><span class="nx">length</span> <span class="o">-</span> <span class="m">1</span><span class="o">;</span> <span class="nx">i</span> <span class="o">>=</span> <span class="m">0</span><span class="o">;</span> <span class="o">--</span><span class="nx">i</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">_unsetProperty</span><span class="o">(</span><span class="nx">workerStyle</span><span class="o">,</span><span class="nx">css</span><span class="o">[</span><span class="nx">i</span><span class="o">]);</span>
<span class="o">}</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">workerStyle</span><span class="o">.</span><span class="nx">cssText</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">rule</span><span class="o">.</span><span class="nx">style</span><span class="o">.</span><span class="nx">cssText</span> <span class="o">=</span> <span class="nx">workerStyle</span><span class="o">.</span><span class="nx">cssText</span><span class="o">;</span>
<span class="o">}</span> <span class="k">else</span> <span class="o">{</span>
<span class="nx">remove</span> <span class="o">=</span> <span class="kc">true</span><span class="o">;</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">remove</span><span class="o">)</span> <span class="o">{</span> <span class="c">// remove the rule altogether</span>
<span class="c"></span> <span class="nx">rules</span> <span class="o">=</span> <span class="nx">sheet</span><span class="o">[</span><span class="nx">_rules</span><span class="o">];</span>
<span class="k">for</span> <span class="o">(</span><span class="nx">i</span> <span class="o">=</span> <span class="nx">rules</span><span class="o">.</span><span class="nx">length</span> <span class="o">-</span> <span class="m">1</span><span class="o">;</span> <span class="nx">i</span> <span class="o">>=</span> <span class="m">0</span><span class="o">;</span> <span class="o">--</span><span class="nx">i</span><span class="o">)</span> <span class="o">{</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">rules</span><span class="o">[</span><span class="nx">i</span><span class="o">]</span> <span class="o">===</span> <span class="nx">rule</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">delete</span> <span class="nx">cssRules</span><span class="o">[</span><span class="nx">sel</span><span class="o">];</span>
<span class="nx">_deleteRule</span><span class="o">(</span><span class="nx">i</span><span class="o">);</span>
<span class="k">break</span><span class="o">;</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="k">return</span> <span class="k">this</span><span class="o">;</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Get the current cssText for a rule or the entire sheet. If the</span>
<span class="c"> * selector param is supplied, only the cssText for that rule will be</span>
<span class="c"> * returned, if found. If the selector string targets multiple</span>
<span class="c"> * selectors separated by commas, the cssText of the first rule only</span>
<span class="c"> * will be returned. If no selector string, the stylesheet's full</span>
<span class="c"> * cssText will be returned.</span>
<span class="c"> *</span>
<span class="c"> * @method getCssText</span>
<span class="c"> * @param sel {String} Selector string</span>
<span class="c"> * @return {String}</span>
<span class="c"> */</span>
<span class="nx">getCssText</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">sel</span><span class="o">)</span> <span class="o">{</span>
<span class="k">var</span> <span class="nx">rule</span><span class="o">,</span><span class="nx">css</span><span class="o">;</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">isString</span><span class="o">(</span><span class="nx">sel</span><span class="o">))</span> <span class="o">{</span>
<span class="c">// IE's addRule doesn't support multiple comma delimited</span>
<span class="c"></span> <span class="c">// selectors so rules are mapped internally by atomic selectors</span>
<span class="c"></span> <span class="nx">rule</span> <span class="o">=</span> <span class="nx">cssRules</span><span class="o">[</span><span class="nx">sel</span><span class="o">.</span><span class="nx">split</span><span class="o">(</span><span class="sr">/\s*,\s*/</span><span class="o">)[</span><span class="m">0</span><span class="o">]];</span>
<span class="k">return</span> <span class="nx">rule</span> <span class="o">?</span> <span class="nx">rule</span><span class="o">.</span><span class="nx">style</span><span class="o">.</span><span class="nx">cssText</span> <span class="o">:</span> <span class="kc">null</span><span class="o">;</span>
<span class="o">}</span> <span class="k">else</span> <span class="o">{</span>
<span class="nx">css</span> <span class="o">=</span> <span class="o">[];</span>
<span class="k">for</span> <span class="o">(</span><span class="nx">sel</span> <span class="k">in</span> <span class="nx">cssRules</span><span class="o">)</span> <span class="o">{</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">cssRules</span><span class="o">.</span><span class="nx">hasOwnProperty</span><span class="o">(</span><span class="nx">sel</span><span class="o">))</span> <span class="o">{</span>
<span class="nx">rule</span> <span class="o">=</span> <span class="nx">cssRules</span><span class="o">[</span><span class="nx">sel</span><span class="o">];</span>
<span class="nx">css</span><span class="o">.</span><span class="nx">push</span><span class="o">(</span><span class="nx">rule</span><span class="o">.</span><span class="nx">selectorText</span><span class="o">+</span><span class="s2">" {"</span><span class="o">+</span><span class="nx">rule</span><span class="o">.</span><span class="nx">style</span><span class="o">.</span><span class="nx">cssText</span><span class="o">+</span><span class="s2">"}"</span><span class="o">);</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="k">return</span> <span class="nx">css</span><span class="o">.</span><span class="nx">join</span><span class="o">(</span><span class="s2">"\n"</span><span class="o">);</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="o">});</span>
<span class="o">}</span>
<span class="nx">_toCssText</span> <span class="o">=</span> <span class="k">function</span> <span class="o">(</span><span class="nx">css</span><span class="o">,</span><span class="nx">base</span><span class="o">)</span> <span class="o">{</span>
<span class="k">var</span> <span class="nx">f</span> <span class="o">=</span> <span class="nx">css</span><span class="o">.</span><span class="nx">styleFloat</span> <span class="o">||</span> <span class="nx">css</span><span class="o">.</span><span class="nx">cssFloat</span> <span class="o">||</span> <span class="nx">css</span><span class="o">[</span><span class="nx">FLOAT</span><span class="o">],</span>
<span class="nx">trim</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">Lang</span><span class="o">.</span><span class="nx">trim</span><span class="o">,</span>
<span class="nx">prop</span><span class="o">;</span>
<span class="nx">workerStyle</span><span class="o">.</span><span class="nx">cssText</span> <span class="o">=</span> <span class="nx">base</span> <span class="o">||</span> <span class="nx">EMPTY</span><span class="o">;</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">f</span> <span class="o">&&</span> <span class="o">!</span><span class="nx">css</span><span class="o">[</span><span class="nx">floatAttr</span><span class="o">])</span> <span class="o">{</span>
<span class="nx">css</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">merge</span><span class="o">(</span><span class="nx">css</span><span class="o">);</span>
<span class="nx">delete</span> <span class="nx">css</span><span class="o">.</span><span class="nx">styleFloat</span><span class="o">;</span> <span class="nx">delete</span> <span class="nx">css</span><span class="o">.</span><span class="nx">cssFloat</span><span class="o">;</span> <span class="nx">delete</span> <span class="nx">css</span><span class="o">[</span><span class="nx">FLOAT</span><span class="o">];</span>
<span class="nx">css</span><span class="o">[</span><span class="nx">floatAttr</span><span class="o">]</span> <span class="o">=</span> <span class="nx">f</span><span class="o">;</span>
<span class="o">}</span>
<span class="k">for</span> <span class="o">(</span><span class="nx">prop</span> <span class="k">in</span> <span class="nx">css</span><span class="o">)</span> <span class="o">{</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">css</span><span class="o">.</span><span class="nx">hasOwnProperty</span><span class="o">(</span><span class="nx">prop</span><span class="o">))</span> <span class="o">{</span>
<span class="k">try</span> <span class="o">{</span>
<span class="c">// IE throws Invalid Value errors and doesn't like whitespace</span>
<span class="c"></span> <span class="c">// in values ala ' red' or 'red '</span>
<span class="c"></span> <span class="nx">workerStyle</span><span class="o">[</span><span class="nx">prop</span><span class="o">]</span> <span class="o">=</span> <span class="nx">trim</span><span class="o">(</span><span class="nx">css</span><span class="o">[</span><span class="nx">prop</span><span class="o">]);</span>
<span class="o">}</span>
<span class="k">catch</span> <span class="o">(</span><span class="nx">e</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">Y</span><span class="o">.</span><span class="nx">log</span><span class="o">(</span><span class="s1">'Error assigning property "'</span><span class="o">+</span><span class="nx">prop</span><span class="o">+</span><span class="s1">'" to "'</span><span class="o">+</span><span class="nx">css</span><span class="o">[</span><span class="nx">prop</span><span class="o">]+</span>
<span class="s2">"\" (ignored):\n"</span><span class="o">+</span><span class="nx">e</span><span class="o">.</span><span class="nx">message</span><span class="o">,</span><span class="s1">'warn'</span><span class="o">,</span><span class="s1">'StyleSheet'</span><span class="o">);</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="k">return</span> <span class="nx">workerStyle</span><span class="o">.</span><span class="nx">cssText</span><span class="o">;</span>
<span class="o">};</span>
<span class="nx">Y</span><span class="o">.</span><span class="nx">mix</span><span class="o">(</span><span class="nx">StyleSheet</span><span class="o">,</span> <span class="o">{</span>
<span class="c">/**</span>
<span class="c"> * <p>Converts an object literal of style properties and values into a string</span>
<span class="c"> * of css text. This can then be assigned to el.style.cssText.</p></span>
<span class="c"> *</span>
<span class="c"> * <p>The optional second parameter is a cssText string representing the</span>
<span class="c"> * starting state of the style prior to alterations. This is most often</span>
<span class="c"> * extracted from the eventual target's current el.style.cssText.</p></span>
<span class="c"> *</span>
<span class="c"> * @method StyleSheet.toCssText</span>
<span class="c"> * @param css {Object} object literal of style properties and values</span>
<span class="c"> * @param cssText {String} (optional) starting cssText value</span>
<span class="c"> * @return {String} the resulting cssText string</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">toCssText</span> <span class="o">:</span> <span class="o">((</span><span class="nx">OPACITY</span> <span class="k">in</span> <span class="nx">workerStyle</span><span class="o">)</span> <span class="o">?</span> <span class="nx">_toCssText</span> <span class="o">:</span>
<span class="c">// Wrap IE's toCssText to catch opacity. The copy/merge is to preserve</span>
<span class="c"></span> <span class="c">// the input object's integrity, but if float and opacity are set, the</span>
<span class="c"></span> <span class="c">// input will be copied twice in IE. Is there a way to avoid this</span>
<span class="c"></span> <span class="c">// without increasing the byte count?</span>
<span class="c"></span> <span class="k">function</span> <span class="o">(</span><span class="nx">css</span><span class="o">,</span> <span class="nx">cssText</span><span class="o">)</span> <span class="o">{</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">OPACITY</span> <span class="k">in</span> <span class="nx">css</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">css</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">merge</span><span class="o">(</span><span class="nx">css</span><span class="o">,{</span>
<span class="nx">filter</span><span class="o">:</span> <span class="s1">'alpha(opacity='</span><span class="o">+(</span><span class="nx">css</span><span class="o">.</span><span class="nx">opacity</span><span class="o">*</span><span class="m">100</span><span class="o">)+</span><span class="s1">')'</span>
<span class="o">});</span>
<span class="nx">delete</span> <span class="nx">css</span><span class="o">.</span><span class="nx">opacity</span><span class="o">;</span>
<span class="o">}</span>
<span class="k">return</span> <span class="nx">_toCssText</span><span class="o">(</span><span class="nx">css</span><span class="o">,</span><span class="nx">cssText</span><span class="o">);</span>
<span class="o">}),</span>
<span class="c">/**</span>
<span class="c"> * Registers a StyleSheet instance in the static registry by the given name</span>
<span class="c"> *</span>
<span class="c"> * @method StyleSheet.register</span>
<span class="c"> * @param name {String} the name to assign the StyleSheet in the registry</span>
<span class="c"> * @param sheet {StyleSheet} The StyleSheet instance</span>
<span class="c"> * @return {Boolean} false if no name or sheet is not a StyleSheet</span>
<span class="c"> * instance. true otherwise.</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">register</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">name</span><span class="o">,</span><span class="nx">sheet</span><span class="o">)</span> <span class="o">{</span>
<span class="k">return</span> <span class="o">!!(</span><span class="nx">name</span> <span class="o">&&</span> <span class="nx">sheet</span> <span class="k">instanceof</span> <span class="nx">StyleSheet</span> <span class="o">&&</span>
<span class="o">!</span><span class="nx">sheets</span><span class="o">[</span><span class="nx">name</span><span class="o">]</span> <span class="o">&&</span> <span class="o">(</span><span class="nx">sheets</span><span class="o">[</span><span class="nx">name</span><span class="o">]</span> <span class="o">=</span> <span class="nx">sheet</span><span class="o">));</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * <p>Determines if a selector string is safe to use. Used internally</span>
<span class="c"> * in set to prevent IE from locking up when attempting to add a rule for a</span>
<span class="c"> * &quot;bad selector&quot;.</p></span>
<span class="c"> *</span>
<span class="c"> * <p>Bad selectors are considered to be any string containing unescaped</span>
<span class="c"> * `~!@$%^&()+=|{}[];'"?< or space. Also forbidden are . or # followed by</span>
<span class="c"> * anything other than an alphanumeric. Additionally -abc or .-abc or</span>
<span class="c"> * #_abc or '# ' all fail. There are likely more failure cases, so</span>
<span class="c"> * please file a bug if you encounter one.</p></span>
<span class="c"> *</span>
<span class="c"> * @method StyleSheet.isValidSelector</span>
<span class="c"> * @param sel {String} the selector string</span>
<span class="c"> * @return {Boolean}</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">isValidSelector</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">sel</span><span class="o">)</span> <span class="o">{</span>
<span class="k">var</span> <span class="nx">valid</span> <span class="o">=</span> <span class="kc">false</span><span class="o">;</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">sel</span> <span class="o">&&</span> <span class="nx">isString</span><span class="o">(</span><span class="nx">sel</span><span class="o">))</span> <span class="o">{</span>
<span class="k">if</span> <span class="o">(!</span><span class="nx">selectors</span><span class="o">.</span><span class="nx">hasOwnProperty</span><span class="o">(</span><span class="nx">sel</span><span class="o">))</span> <span class="o">{</span>
<span class="c">// TEST: there should be nothing but white-space left after</span>
<span class="c"></span> <span class="c">// these destructive regexs</span>
<span class="c"></span> <span class="nx">selectors</span><span class="o">[</span><span class="nx">sel</span><span class="o">]</span> <span class="o">=</span> <span class="o">!</span><span class="sr">/\S/</span><span class="o">.</span><span class="nx">test</span><span class="o">(</span>
<span class="c">// combinators</span>
<span class="c"></span> <span class="nx">sel</span><span class="o">.</span><span class="nx">replace</span><span class="o">(</span><span class="sr">/\s+|\s*[+~>]\s*/g</span><span class="o">,</span><span class="s1">' '</span><span class="o">).</span>
<span class="c">// attribute selectors (contents not validated)</span>
<span class="c"></span> <span class="nx">replace</span><span class="o">(</span><span class="sr">/([^ ])\[.*?\]/g</span><span class="o">,</span><span class="s1">'$1'</span><span class="o">).</span>
<span class="c">// pseudo-class|element selectors (contents of parens</span>
<span class="c"></span> <span class="c">// such as :nth-of-type(2) or :not(...) not validated)</span>
<span class="c"></span> <span class="nx">replace</span><span class="o">(</span><span class="sr">/([^ ])::?[a-z][a-z\-]+[a-z](?:\(.*?\))?/ig</span><span class="o">,</span><span class="s1">'$1'</span><span class="o">).</span>
<span class="c">// element tags</span>
<span class="c"></span> <span class="nx">replace</span><span class="o">(</span><span class="sr">/(?:^| )[a-z0-6]+/ig</span><span class="o">,</span><span class="s1">' '</span><span class="o">).</span>
<span class="c">// escaped characters</span>
<span class="c"></span> <span class="nx">replace</span><span class="o">(</span><span class="sr">/\\./g</span><span class="o">,</span><span class="nx">EMPTY</span><span class="o">).</span>
<span class="c">// class and id identifiers</span>
<span class="c"></span> <span class="nx">replace</span><span class="o">(</span><span class="sr">/[.#]\w[\w\-]*/g</span><span class="o">,</span><span class="nx">EMPTY</span><span class="o">));</span>
<span class="o">}</span>
<span class="nx">valid</span> <span class="o">=</span> <span class="nx">selectors</span><span class="o">[</span><span class="nx">sel</span><span class="o">];</span>
<span class="o">}</span>
<span class="k">return</span> <span class="nx">valid</span><span class="o">;</span>
<span class="o">}</span>
<span class="o">},</span><span class="kc">true</span><span class="o">);</span>
<span class="nx">Y</span><span class="o">.</span><span class="nx">StyleSheet</span> <span class="o">=</span> <span class="nx">StyleSheet</span><span class="o">;</span>
<span class="c">/*</span>
<span class="c"></span>
<span class="c">NOTES</span>
<span class="c"> * Style node must be added to the head element. Safari does not honor styles</span>
<span class="c"> applied to StyleSheet objects on style nodes in the body.</span>
<span class="c"> * StyleSheet object is created on the style node when the style node is added</span>
<span class="c"> to the head element in Firefox 2 (and maybe 3?)</span>
<span class="c"> * The cssRules collection is replaced after insertRule/deleteRule calls in</span>
<span class="c"> Safari 3.1. Existing Rules are used in the new collection, so the collection</span>
<span class="c"> cannot be cached, but the rules can be.</span>
<span class="c"> * Opera requires that the index be passed with insertRule.</span>
<span class="c"> * Same-domain restrictions prevent modifying StyleSheet objects attached to</span>
<span class="c"> link elements with remote href (or "about:blank" or "javascript:false")</span>
<span class="c"> * Same-domain restrictions prevent reading StyleSheet cssRules/rules</span>
<span class="c"> collection of link elements with remote href (or "about:blank" or</span>
<span class="c"> "javascript:false")</span>
<span class="c"> * Same-domain restrictions result in Safari not populating node.sheet property</span>
<span class="c"> for link elements with remote href (et.al)</span>
<span class="c"> * IE names StyleSheet related properties and methods differently (see code)</span>
<span class="c"> * IE converts tag names to upper case in the Rule's selectorText</span>
<span class="c"> * IE converts empty string assignment to complex properties to value settings</span>
<span class="c"> for all child properties. E.g. style.background = '' sets non-'' values on</span>
<span class="c"> style.backgroundPosition, style.backgroundColor, etc. All else clear</span>
<span class="c"> style.background and all child properties.</span>
<span class="c"> * IE assignment style.filter = '' will result in style.cssText == 'FILTER:'</span>
<span class="c"> * All browsers support Rule.style.cssText as a read/write property, leaving</span>
<span class="c"> only opacity needing to be accounted for.</span>
<span class="c"> * Benchmarks of style.property = value vs style.cssText += 'property: value'</span>
<span class="c"> indicate cssText is slightly slower for single property assignment. For</span>
<span class="c"> multiple property assignment, cssText speed stays relatively the same where</span>
<span class="c"> style.property speed decreases linearly by the number of properties set.</span>
<span class="c"> Exception being Opera 9.27, where style.property is always faster than</span>
<span class="c"> style.cssText.</span>
<span class="c"> * Opera 9.5b throws a syntax error when assigning cssText with a syntax error.</span>
<span class="c"> * Opera 9.5 doesn't honor rule.style.cssText = ''. Previous style persists.</span>
<span class="c"> You have to remove the rule altogether.</span>
<span class="c"> * Stylesheet properties set with !important will trump inline style set on an</span>
<span class="c"> element or in el.style.property.</span>
<span class="c"> * Creating a worker style collection like document.createElement('p').style;</span>
<span class="c"> will fail after a time in FF (~5secs of inactivity). Property assignments</span>
<span class="c"> will not alter the property or cssText. It may be the generated node is</span>
<span class="c"> garbage collected and the style collection becomes inert (speculation).</span>
<span class="c"> * IE locks up when attempting to add a rule with a selector including at least</span>
<span class="c"> characters {[]}~`!@%^&*()+=|? (unescaped) and leading _ or -</span>
<span class="c"> such as addRule('-foo','{ color: red }') or addRule('._abc','{...}')</span>
<span class="c"> * IE's addRule doesn't support comma separated selectors such as</span>
<span class="c"> addRule('.foo, .bar','{..}')</span>
<span class="c"> * IE throws an error on valid values with leading/trailing white space.</span>
<span class="c"> * When creating an entire sheet at once, only FF2/3 & Opera allow creating a</span>
<span class="c"> style node, setting its innerHTML and appending to head.</span>
<span class="c"> * When creating an entire sheet at once, Safari requires the style node to be</span>
<span class="c"> created with content in innerHTML of another element.</span>
<span class="c"> * When creating an entire sheet at once, IE requires the style node content to</span>
<span class="c"> be set via node.styleSheet.cssText</span>
<span class="c"> * When creating an entire sheet at once in IE, styleSheet.cssText can't be</span>
<span class="c"> written until node.type = 'text/css'; is performed.</span>
<span class="c"> * When creating an entire sheet at once in IE, load-time fork on</span>
<span class="c"> var styleNode = d.createElement('style'); _method = styleNode.styleSheet ?..</span>
<span class="c"> fails (falsey). During run-time, the test for .styleSheet works fine</span>
<span class="c"> * Setting complex properties in cssText will SOMETIMES allow child properties</span>
<span class="c"> to be unset</span>
<span class="c"> set unset FF2 FF3 S3.1 IE6 IE7 Op9.27 Op9.5</span>
<span class="c"> ---------- ----------------- --- --- ---- --- --- ------ -----</span>
<span class="c"> border -top NO NO YES YES YES YES YES</span>
<span class="c"> -top-color NO NO YES YES YES</span>
<span class="c"> -color NO NO NO NO NO</span>
<span class="c"> background -color NO NO YES YES YES</span>
<span class="c"> -position NO NO YES YES YES</span>
<span class="c"> -position-x NO NO NO NO NO</span>
<span class="c"> font line-height YES YES NO NO NO NO YES</span>
<span class="c"> -style YES YES NO YES YES</span>
<span class="c"> -size YES YES NO YES YES</span>
<span class="c"> -size-adjust ??? ??? n/a n/a n/a ??? ???</span>
<span class="c"> padding -top NO NO YES YES YES</span>
<span class="c"> margin -top NO NO YES YES YES</span>
<span class="c"> list-style -type YES YES YES YES YES</span>
<span class="c"> -position YES YES YES YES YES</span>
<span class="c"> overflow -x NO NO YES n/a YES</span>
<span class="c"></span>
<span class="c"> ??? - unsetting font-size-adjust has the same effect as unsetting font-size</span>
<span class="c"> * FireFox and WebKit populate rule.cssText as "SELECTOR { CSSTEXT }", but</span>
<span class="c"> Opera and IE do not.</span>
<span class="c"> * IE6 and IE7 silently ignore the { and } if passed into addRule('.foo','{</span>
<span class="c"> color:#000}',0). IE8 does not and creates an empty rule.</span>
<span class="c"> * IE6-8 addRule('.foo','',n) throws an error. Must supply *some* cssText</span>
<span class="c">*/</span>
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