openlayers/doc/devdocs/files/OpenLayers/Layer/Text-js.html

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  14 <div id=Content><div class="CClass"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="OpenLayers.Layer.Text"></a>OpenLayers.<wbr>Layer.Text</h1><div class=CBody><p>This layer creates markers given data in a text file.&nbsp;  The <a href="#OpenLayers.Layer.Text.location" class=LProperty id=link8 onMouseOver="ShowTip(event, 'tt7', 'link8')" onMouseOut="HideTip('tt7')">location</a> property of the layer (specified as a property of the options argument in the <a href="#OpenLayers.Layer.Text.OpenLayers.Layer.Text" class=LConstructor id=link9 onMouseOver="ShowTip(event, 'tt8', 'link9')" onMouseOut="HideTip('tt8')">OpenLayers.Layer.Text</a> constructor) points to a tab delimited file with data used to create markers.</p><p>The first row of the data file should be a header line with the column names of the data.&nbsp; Each column should be delimited by a tab space.&nbsp; The possible columns are:</p><ul><li><b>point</b> lat,lon of the point where a marker is to be placed</li><li><b>lat</b>  Latitude of the point where a marker is to be placed</li><li><b>lon</b>  Longitude of the point where a marker is to be placed</li><li><b>icon</b> or <b>image</b> URL of marker icon to use.</li><li><b>iconSize</b> Size of Icon to use.</li><li><b>iconOffset</b> Where the top-left corner of the icon is to be placed relative to the latitude and longitude of the point.</li><li><b>title</b> The text of the &lsquo;title&rsquo; is placed inside an &lsquo;h2&rsquo; marker inside a popup, which opens when the marker is clicked.</li><li><b>description</b> The text of the &lsquo;description&rsquo; is placed below the h2 in the popup. this can be plain text or HTML.</li></ul><h4 class=CHeading>Example text file</h4><blockquote><pre>lat  lon title   description iconSize    iconOffset  icon
  15 10   20  title   description 21,25       -10,-25     http://www.openlayers.org/dev/img/marker.png</pre></blockquote><h4 class=CHeading>Inherits from</h4><ul><li><a href="Markers-js.html#OpenLayers.Layer.Markers" class=LClass >OpenLayers.Layer.Markers</a></li></ul><!--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.Layer.Text" >OpenLayers.<wbr>Layer.Text</a></td><td class=SDescription>This layer creates markers given data in a text file. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Layer.Text.Properties" >Properties</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Text.location" >location</a></td><td class=SDescription>{String} URL of text file. </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Text.features" >features</a></td><td class=SDescription>{Array(<a href="../Feature-js.html#OpenLayers.Feature" class=LClass id=link1 onMouseOver="ShowTip(event, 'tt1', 'link1')" onMouseOut="HideTip('tt1')">OpenLayers.Feature</a>)}</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Text.formatOptions" >formatOptions</a></td><td class=SDescription>{Object} Hash of options which should be passed to the format when it is created. </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Text.selectedFeature" >selectedFeature</a></td><td class=SDescription>{<a href="../Feature-js.html#OpenLayers.Feature" class=LClass id=link2 onMouseOver="ShowTip(event, 'tt1', 'link2')" onMouseOut="HideTip('tt1')">OpenLayers.Feature</a>}</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Layer.Text.Constructor" >Constructor</a></td><td class=SDescription></td></tr><tr class="SConstructor SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Text.OpenLayers.Layer.Text" >OpenLayers.<wbr>Layer.Text</a></td><td class=SDescription>Create a text layer.</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Layer.Text.Functions_and_Properties" >Functions and Properties</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Text.destroy" id=link3 onMouseOver="ShowTip(event, 'tt2', 'link3')" onMouseOut="HideTip('tt2')">destroy</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Text.loadText" id=link4 onMouseOver="ShowTip(event, 'tt3', 'link4')" onMouseOut="HideTip('tt3')">loadText</a></td><td class=SDescription>Start the load of the Text data. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Text.moveTo" id=link5 onMouseOver="ShowTip(event, 'tt4', 'link5')" onMouseOut="HideTip('tt4')">moveTo</a></td><td class=SDescription>If layer is visible and Text has not been loaded, load Text.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Text.parseData" id=link6 onMouseOver="ShowTip(event, 'tt5', 'link6')" onMouseOut="HideTip('tt5')">parseData</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Text.markerClick" >markerClick</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Text.clearFeatures" id=link7 onMouseOver="ShowTip(event, 'tt6', 'link7')" onMouseOut="HideTip('tt6')">clearFeatures</a></td><td class=SDescription></td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div>
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  17 <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Text.Properties"></a>Properties</h3></div></div>
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  19 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Text.location"></a>location</h3><div class=CBody><p>{String} URL of text file.&nbsp;  Must be specified in the &ldquo;options&rdquo; argument of the constructor.&nbsp; Can not be changed once passed in.</p></div></div></div>
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  21 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Text.features"></a>features</h3><div class=CBody><p>{Array(<a href="../Feature-js.html#OpenLayers.Feature" class=LClass id=link10 onMouseOver="ShowTip(event, 'tt1', 'link10')" onMouseOut="HideTip('tt1')">OpenLayers.Feature</a>)}</p></div></div></div>
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  23 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Text.formatOptions"></a>formatOptions</h3><div class=CBody><p>{Object} Hash of options which should be passed to the format when it is created.&nbsp; Must be passed in the constructor.</p></div></div></div>
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  25 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Text.selectedFeature"></a>selectedFeature</h3><div class=CBody><p>{<a href="../Feature-js.html#OpenLayers.Feature" class=LClass id=link11 onMouseOver="ShowTip(event, 'tt1', 'link11')" onMouseOut="HideTip('tt1')">OpenLayers.Feature</a>}</p></div></div></div>
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  27 <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Text.Constructor"></a>Constructor</h3></div></div>
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  29 <div class="CConstructor"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Text.OpenLayers.Layer.Text"></a>OpenLayers.<wbr>Layer.Text</h3><div class=CBody><p>Create a text layer.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>name</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} Object with properties to be set on the layer.&nbsp; Must include <a href="#OpenLayers.Layer.Text.location" class=LProperty id=link12 onMouseOver="ShowTip(event, 'tt7', 'link12')" onMouseOut="HideTip('tt7')">location</a> property.</td></tr></table></div></div></div>
  30
  31 <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Text.Functions_and_Properties"></a>Functions and Properties</h3></div></div>
  32
  33 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Text.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></div></div></div>
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  35 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Text.loadText"></a>loadText</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>loadText: function()</td></tr></table></blockquote><p>Start the load of the Text data.&nbsp; Don&rsquo;t do this when we first add the layer, since we may not be visible at any point, and it would therefore be a waste.</p></div></div></div>
  36
  37 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Text.moveTo"></a>moveTo</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>moveTo:function(</td><td class=PParameter nowrap>bounds,</td></tr><tr><td></td><td class=PParameter nowrap>zoomChanged,</td></tr><tr><td></td><td class=PParameter nowrap>minor</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>If layer is visible and Text has not been loaded, load Text.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>bounds</td><td class=CDLDescription>{Object}</td></tr><tr><td class=CDLEntry>zoomChanged</td><td class=CDLDescription>{Object}</td></tr><tr><td class=CDLEntry>minor</td><td class=CDLDescription>{Object}</td></tr></table></div></div></div>
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  39 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Text.parseData"></a>parseData</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>parseData: function(</td><td class=PParameter nowrap>ajaxRequest</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>ajaxRequest</td><td class=CDLDescription>{<a href="../Request/XMLHttpRequest-js.html#OpenLayers.Request.XMLHttpRequest" class=LClass id=link13 onMouseOver="ShowTip(event, 'tt9', 'link13')" onMouseOut="HideTip('tt9')">OpenLayers.Request.XMLHttpRequest</a>}</td></tr></table></div></div></div>
  40
  41 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Text.markerClick"></a>markerClick</h3><div class=CBody><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>evt</td><td class=CDLDescription>{Event}</td></tr></table></div></div></div>
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  43 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Text.clearFeatures"></a>clearFeatures</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>clearFeatures: function()</td></tr></table></blockquote></div></div></div>
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