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14 <div id=Content><div class="CClass"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="OpenLayers.Rule"></a>OpenLayers.Rule</h1><div class=CBody><p>This class represents an SLD Rule, as being used for rule-based SLD styling.</p><!--START_ND_SUMMARY--><div class=Summary><div class=STitle>Summary</div><div class=SBorder><table border=0 cellspacing=0 cellpadding=0 class=STable><tr class="SMain"><td class=SEntry><a href="#OpenLayers.Rule" >OpenLayers.Rule</a></td><td class=SDescription>This class represents an SLD Rule, as being used for rule-based SLD styling.</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Rule.Properties" >Properties</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Rule.id" >id</a></td><td class=SDescription>{String} A unique id for this session.</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Rule.name" >name</a></td><td class=SDescription>{String} name of this rule</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Rule.title" >title</a></td><td class=SDescription>{String} Title of this rule (set if included in SLD)</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Rule.description" >description</a></td><td class=SDescription>{String} Description of this rule (set if abstract is included in SLD)</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Rule.context" >context</a></td><td class=SDescription>{Object} An optional object with properties that the rule should be evaluated against. </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Rule.filter" >filter</a></td><td class=SDescription>{<a href="Filter-js.html#OpenLayers.Filter" class=LClass id=link1 onMouseOver="ShowTip(event, 'tt1', 'link1')" onMouseOut="HideTip('tt1')">OpenLayers.Filter</a>} Optional filter for the rule.</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Rule.elseFilter" >elseFilter</a></td><td class=SDescription>{Boolean} Determines whether this rule is only to be applied only if no other rules match (ElseFilter according to the SLD specification). </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Rule.symbolizer" >symbolizer</a></td><td class=SDescription>{Object} Symbolizer or hash of symbolizers for this rule. </td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Rule.minScaleDenominator" >minScaleDenominator</a></td><td class=SDescription>{Number} or {String} minimum scale at which to draw the feature. </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Rule.maxScaleDenominator" >maxScaleDenominator</a></td><td class=SDescription>{Number} or {String} maximum scale at which to draw the feature. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Rule.Constructor" >Constructor</a></td><td class=SDescription></td></tr><tr class="SConstructor SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Rule.OpenLayers.Rule" >OpenLayers.Rule</a></td><td class=SDescription>Creates a Rule.</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Rule.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Rule.destroy" id=link2 onMouseOver="ShowTip(event, 'tt2', 'link2')" onMouseOut="HideTip('tt2')">destroy</a></td><td class=SDescription>nullify references to prevent circular references and memory leaks</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Rule.evaluate" id=link3 onMouseOver="ShowTip(event, 'tt3', 'link3')" onMouseOut="HideTip('tt3')">evaluate</a></td><td class=SDescription>evaluates this rule for a specific feature</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Rule.getContext" id=link4 onMouseOver="ShowTip(event, 'tt4', 'link4')" onMouseOut="HideTip('tt4')">getContext</a></td><td class=SDescription>Gets the context for evaluating this rule</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Rule.clone" id=link5 onMouseOver="ShowTip(event, 'tt5', 'link5')" onMouseOut="HideTip('tt5')">clone</a></td><td class=SDescription>Clones this rule.</td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div>
16 <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.Properties"></a>Properties</h3></div></div>
18 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.id"></a>id</h3><div class=CBody><p>{String} A unique id for this session.</p></div></div></div>
20 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.name"></a>name</h3><div class=CBody><p>{String} name of this rule</p></div></div></div>
22 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.title"></a>title</h3><div class=CBody><p>{String} Title of this rule (set if included in SLD)</p></div></div></div>
24 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.description"></a>description</h3><div class=CBody><p>{String} Description of this rule (set if abstract is included in SLD)</p></div></div></div>
26 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.context"></a>context</h3><div class=CBody><p>{Object} An optional object with properties that the rule should be evaluated against. If no context is specified, feature.attributes will be used.</p></div></div></div>
28 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.filter"></a>filter</h3><div class=CBody><p>{<a href="Filter-js.html#OpenLayers.Filter" class=LClass id=link6 onMouseOver="ShowTip(event, 'tt1', 'link6')" onMouseOut="HideTip('tt1')">OpenLayers.Filter</a>} Optional filter for the rule.</p></div></div></div>
30 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.elseFilter"></a>elseFilter</h3><div class=CBody><p>{Boolean} Determines whether this rule is only to be applied only if no other rules match (ElseFilter according to the SLD specification). Default is false. For instances of OpenLayers.Rule, if elseFilter is false, the rule will always apply. For subclasses, the else property is ignored.</p></div></div></div>
32 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.symbolizer"></a>symbolizer</h3><div class=CBody><p>{Object} Symbolizer or hash of symbolizers for this rule. If hash of symbolizers, keys are one or more of [“Point”, “Line”, “Polygon”]. The latter if useful if it is required to style e.g. vertices of a line with a point symbolizer. Note, however, that this is not implemented yet in OpenLayers, but it is the way how symbolizers are defined in SLD.</p></div></div></div>
34 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.minScaleDenominator"></a>minScaleDenominator</h3><div class=CBody><p>{Number} or {String} minimum scale at which to draw the feature. In the case of a String, this can be a combination of text and propertyNames in the form “literal ${propertyName}”</p></div></div></div>
36 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.maxScaleDenominator"></a>maxScaleDenominator</h3><div class=CBody><p>{Number} or {String} maximum scale at which to draw the feature. In the case of a String, this can be a combination of text and propertyNames in the form “literal ${propertyName}”</p></div></div></div>
38 <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.Constructor"></a>Constructor</h3></div></div>
40 <div class="CConstructor"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.OpenLayers.Rule"></a>OpenLayers.Rule</h3><div class=CBody><p>Creates a Rule.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} An optional object with properties to set on the rule</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="#OpenLayers.Rule.OpenLayers.Rule" class=LConstructor id=link7 onMouseOver="ShowTip(event, 'tt6', 'link7')" onMouseOut="HideTip('tt6')">OpenLayers.Rule</a>}</p></div></div></div>
42 <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.Functions"></a>Functions</h3></div></div>
44 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.destroy"></a>destroy</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>destroy: function()</td></tr></table></blockquote><p>nullify references to prevent circular references and memory leaks</p></div></div></div>
46 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.evaluate"></a>evaluate</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>evaluate: function(</td><td class=PParameter nowrap>feature</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>evaluates this rule for a specific feature</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>feature</td><td class=CDLDescription>{<a href="Feature-js.html#OpenLayers.Feature" class=LClass id=link8 onMouseOver="ShowTip(event, 'tt7', 'link8')" onMouseOut="HideTip('tt7')">OpenLayers.Feature</a>} feature to apply the rule to.</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean} true if the rule applies, false if it does not. This rule is the default rule and always returns true.</p></div></div></div>
48 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.getContext"></a>getContext</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>getContext: function(</td><td class=PParameter nowrap>feature</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Gets the context for evaluating this rule</p><h4 class=CHeading>Paramters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>feature</td><td class=CDLDescription>{<a href="Feature-js.html#OpenLayers.Feature" class=LClass id=link9 onMouseOver="ShowTip(event, 'tt7', 'link9')" onMouseOut="HideTip('tt7')">OpenLayers.Feature</a>} feature to take the context from if none is specified.</td></tr></table></div></div></div>
50 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Rule.clone"></a>clone</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>clone: function()</td></tr></table></blockquote><p>Clones this rule.</p><h4 class=CHeading>Returns</h4><p>{<a href="#OpenLayers.Rule.OpenLayers.Rule" class=LConstructor id=link10 onMouseOver="ShowTip(event, 'tt6', 'link10')" onMouseOut="HideTip('tt6')">OpenLayers.Rule</a>} Clone of this rule.</p></div></div></div>
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60 --></script><div id=MSearchPanel class=MSearchPanelInactive><input type=text id=MSearchField value=Search onFocus="searchPanel.OnSearchFieldFocus(true)" onBlur="searchPanel.OnSearchFieldFocus(false)" onKeyUp="searchPanel.OnSearchFieldChange()"><select id=MSearchType onFocus="searchPanel.OnSearchTypeFocus(true)" onBlur="searchPanel.OnSearchTypeFocus(false)" onChange="searchPanel.OnSearchTypeChange()"><option id=MSearchEverything selected value="General">Everything</option><option value="Classes">Classes</option><option value="Constants">Constants</option><option value="Constructor">Constructor</option><option value="Files">Files</option><option value="Functions">Functions</option><option value="Properties">Properties</option></select></div><script language=JavaScript><!--
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65 <!--START_ND_TOOLTIPS-->
66 <div class=CToolTip id="tt1"><div class=CClass>This class represents an OGC Filter.</div></div><div class=CToolTip id="tt2"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>destroy: function()</td></tr></table></blockquote>nullify references to prevent circular references and memory leaks</div></div><div class=CToolTip id="tt3"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>evaluate: function(</td><td class=PParameter nowrap>feature</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>evaluates this rule for a specific feature</div></div><div class=CToolTip id="tt4"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>getContext: function(</td><td class=PParameter nowrap>feature</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Gets the context for evaluating this rule</div></div><div class=CToolTip id="tt5"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>clone: function()</td></tr></table></blockquote>Clones this rule.</div></div><div class=CToolTip id="tt6"><div class=CConstructor>Creates a Rule.</div></div><div class=CToolTip id="tt7"><div class=CClass>Features are combinations of geography and attributes. </div></div><!--END_ND_TOOLTIPS-->
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