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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>OpenLayers.Event - OpenLayers</title><link rel="stylesheet" type="text/css" href="../../styles/main.css"><script language=JavaScript src="../../javascript/main.js"></script><script language=JavaScript src="../../javascript/prettify.js"></script><script language=JavaScript src="../../javascript/searchdata.js"></script></head><body class="ContentPage" onLoad="NDOnLoad();prettyPrint();"><script language=JavaScript><!--
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<div id=Content><div class="CClass"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="OpenLayers.Event"></a>OpenLayers.<wbr>Event</h1><div class=CBody><p>Utility functions for event handling.</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.Event" >OpenLayers.<wbr>Event</a></td><td class=SDescription>Utility functions for event handling.</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Event.Properties" >Properties</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Event.observers" >observers</a></td><td class=SDescription>{Object} A hashtable cache of the event observers. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Event.Constants" >Constants</a></td><td class=SDescription></td></tr><tr class="SConstant SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Event.KEY_SPACE" >KEY_SPACE</a></td><td class=SDescription>{int}</td></tr><tr class="SConstant SIndent2"><td class=SEntry><a href="#OpenLayers.Event.KEY_BACKSPACE" >KEY_BACKSPACE</a></td><td class=SDescription>{int}</td></tr><tr class="SConstant SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Event.KEY_TAB" >KEY_TAB</a></td><td class=SDescription>{int}</td></tr><tr class="SConstant SIndent2"><td class=SEntry><a href="#OpenLayers.Event.KEY_RETURN" >KEY_RETURN</a></td><td class=SDescription>{int}</td></tr><tr class="SConstant SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Event.KEY_ESC" >KEY_ESC</a></td><td class=SDescription>{int}</td></tr><tr class="SConstant SIndent2"><td class=SEntry><a href="#OpenLayers.Event.KEY_LEFT" >KEY_LEFT</a></td><td class=SDescription>{int}</td></tr><tr class="SConstant SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Event.KEY_UP" >KEY_UP</a></td><td class=SDescription>{int}</td></tr><tr class="SConstant SIndent2"><td class=SEntry><a href="#OpenLayers.Event.KEY_RIGHT" >KEY_RIGHT</a></td><td class=SDescription>{int}</td></tr><tr class="SConstant SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Event.KEY_DOWN" >KEY_DOWN</a></td><td class=SDescription>{int}</td></tr><tr class="SConstant SIndent2"><td class=SEntry><a href="#OpenLayers.Event.KEY_DELETE" >KEY_DELETE</a></td><td class=SDescription>{int}</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Event.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Event.element" id=link1 onMouseOver="ShowTip(event, 'tt1', 'link1')" onMouseOut="HideTip('tt1')">element</a></td><td class=SDescription>Cross browser event element detection.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Event.isSingleTouch" id=link2 onMouseOver="ShowTip(event, 'tt2', 'link2')" onMouseOut="HideTip('tt2')">isSingleTouch</a></td><td class=SDescription>Determine whether event was caused by a single touch</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Event.isMultiTouch" id=link3 onMouseOver="ShowTip(event, 'tt3', 'link3')" onMouseOut="HideTip('tt3')">isMultiTouch</a></td><td class=SDescription>Determine whether event was caused by a multi touch</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Event.isLeftClick" id=link4 onMouseOver="ShowTip(event, 'tt4', 'link4')" onMouseOut="HideTip('tt4')">isLeftClick</a></td><td class=SDescription>Determine whether event was caused by a left click.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Event.isRightClick" id=link5 onMouseOver="ShowTip(event, 'tt5', 'link5')" onMouseOut="HideTip('tt5')">isRightClick</a></td><td class=SDescription>Determine whether event was caused by a right mouse click.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Event.stop" id=link6 onMouseOver="ShowTip(event, 'tt6', 'link6')" onMouseOut="HideTip('tt6')">stop</a></td><td class=SDescription>Stops an event from propagating.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Event.preventDefault" id=link7 onMouseOver="ShowTip(event, 'tt7', 'link7')" onMouseOut="HideTip('tt7')">preventDefault</a></td><td class=SDescription>Cancels the event if it is cancelable, without stopping further propagation of the event.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Event.findElement" id=link8 onMouseOver="ShowTip(event, 'tt8', 'link8')" onMouseOut="HideTip('tt8')">findElement</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Event.observe" id=link9 onMouseOver="ShowTip(event, 'tt9', 'link9')" onMouseOut="HideTip('tt9')">observe</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Event.stopObservingElement" id=link10 onMouseOver="ShowTip(event, 'tt10', 'link10')" onMouseOut="HideTip('tt10')">stopObservingElement</a></td><td class=SDescription>Given the id of an element to stop observing, cycle through the element&rsquo;s cached observers, calling stopObserving on each one, skipping those entries which can no longer be removed.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Event._removeElementObservers" id=link11 onMouseOver="ShowTip(event, 'tt11', 'link11')" onMouseOut="HideTip('tt11')">_removeElementObservers</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Event.stopObserving" id=link12 onMouseOver="ShowTip(event, 'tt12', 'link12')" onMouseOut="HideTip('tt12')">stopObserving</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Event.unloadCache" id=link13 onMouseOver="ShowTip(event, 'tt13', 'link13')" onMouseOut="HideTip('tt13')">unloadCache</a></td><td class=SDescription>Cycle through all the element entries in the events cache and call stopObservingElement on each.</td></tr><tr class="SClass"><td class=SEntry><a href="#OpenLayers.Events" >OpenLayers.<wbr>Events</a></td><td class=SDescription></td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Events.Constants" >Constants</a></td><td class=SDescription></td></tr><tr class="SConstant SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.BROWSER_EVENTS" >BROWSER_EVENTS</a></td><td class=SDescription>{Array(String)} supported events</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Events.Properties" >Properties</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.listeners" >listeners</a></td><td class=SDescription>{Object} Hashtable of Array(Function): events listener functions</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Events.object" >object</a></td><td class=SDescription>{Object} the code object issuing application events</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.element" >element</a></td><td class=SDescription>{DOMElement} the DOM element receiving browser events</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Events.eventHandler" >eventHandler</a></td><td class=SDescription>{Function} bound event handler attached to elements</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.fallThrough" >fallThrough</a></td><td class=SDescription>{Boolean}</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Events.includeXY" >includeXY</a></td><td class=SDescription>{Boolean} Should the .xy property automatically be created for browser mouse events?&nbsp; </td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.extensions" >extensions</a></td><td class=SDescription>{Object} Event extensions registered with this instance. </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Events.extensionCount" >extensionCount</a></td><td class=SDescription>{Object} Keys are event types (like in <a href="#OpenLayers.Events.listeners" class=LProperty id=link14 onMouseOver="ShowTip(event, 'tt14', 'link14')" onMouseOut="HideTip('tt14')">listeners</a>), values are the number of extension listeners for each event type.</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Events.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.clearMouseListener" >clearMouseListener</a></td><td class=SDescription>A version of <a href="#OpenLayers.Events.clearMouseCache" class=LFunction id=link15 onMouseOver="ShowTip(event, 'tt15', 'link15')" onMouseOut="HideTip('tt15')">clearMouseCache</a> that is bound to this instance so that it can be used with <a href="#OpenLayers.Event.observe" class=LFunction id=link16 onMouseOver="ShowTip(event, 'tt9', 'link16')" onMouseOut="HideTip('tt9')">OpenLayers.Event.observe</a> and <a href="#OpenLayers.Event.stopObserving" class=LFunction id=link17 onMouseOver="ShowTip(event, 'tt12', 'link17')" onMouseOut="HideTip('tt12')">OpenLayers.Event.stopObserving</a>.</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Events.Constructor" >Constructor</a></td><td class=SDescription></td></tr><tr class="SConstructor SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.OpenLayers.Events" >OpenLayers.<wbr>Events</a></td><td class=SDescription>Construct an OpenLayers.Events object.</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Events.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.destroy" id=link18 onMouseOver="ShowTip(event, 'tt16', 'link18')" onMouseOut="HideTip('tt16')">destroy</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Events.addEventType" id=link19 onMouseOver="ShowTip(event, 'tt17', 'link19')" onMouseOut="HideTip('tt17')">addEventType</a></td><td class=SDescription>Deprecated. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.attachToElement" id=link20 onMouseOver="ShowTip(event, 'tt18', 'link20')" onMouseOut="HideTip('tt18')">attachToElement</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Events.on" id=link21 onMouseOver="ShowTip(event, 'tt19', 'link21')" onMouseOut="HideTip('tt19')">on</a></td><td class=SDescription>Convenience method for registering listeners with a common scope. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.register" id=link22 onMouseOver="ShowTip(event, 'tt20', 'link22')" onMouseOut="HideTip('tt20')">register</a></td><td class=SDescription>Register an event on the events object.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Events.registerPriority" id=link23 onMouseOver="ShowTip(event, 'tt21', 'link23')" onMouseOut="HideTip('tt21')">registerPriority</a></td><td class=SDescription>Same as register() but adds the new listener to the <b>front</b> of the events queue instead of to the end.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.un" id=link24 onMouseOver="ShowTip(event, 'tt22', 'link24')" onMouseOut="HideTip('tt22')">un</a></td><td class=SDescription>Convenience method for unregistering listeners with a common scope. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Events.unregister" id=link25 onMouseOver="ShowTip(event, 'tt23', 'link25')" onMouseOut="HideTip('tt23')">unregister</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.remove" id=link26 onMouseOver="ShowTip(event, 'tt24', 'link26')" onMouseOut="HideTip('tt24')">remove</a></td><td class=SDescription>Remove all listeners for a given event type. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Events.triggerEvent" id=link27 onMouseOver="ShowTip(event, 'tt25', 'link27')" onMouseOut="HideTip('tt25')">triggerEvent</a></td><td class=SDescription>Trigger a specified registered event.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.handleBrowserEvent" id=link28 onMouseOver="ShowTip(event, 'tt26', 'link28')" onMouseOut="HideTip('tt26')">handleBrowserEvent</a></td><td class=SDescription>Basically just a wrapper to the triggerEvent() function, but takes care to set a property &lsquo;xy&rsquo; on the event with the current mouse position.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Events.getTouchClientXY" id=link29 onMouseOver="ShowTip(event, 'tt27', 'link29')" onMouseOut="HideTip('tt27')">getTouchClientXY</a></td><td class=SDescription>WebKit has a few bugs for clientX/clientY. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.clearMouseCache" id=link30 onMouseOver="ShowTip(event, 'tt15', 'link30')" onMouseOut="HideTip('tt15')">clearMouseCache</a></td><td class=SDescription>Clear cached data about the mouse position. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Events.getMousePosition" id=link31 onMouseOver="ShowTip(event, 'tt28', 'link31')" onMouseOut="HideTip('tt28')">getMousePosition</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.addMsTouchListener" id=link32 onMouseOver="ShowTip(event, 'tt29', 'link32')" onMouseOut="HideTip('tt29')">addMsTouchListener</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Events.addMsTouchListenerStart" id=link33 onMouseOver="ShowTip(event, 'tt30', 'link33')" onMouseOut="HideTip('tt30')">addMsTouchListenerStart</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Events.addMsTouchListenerMove" id=link34 onMouseOver="ShowTip(event, 'tt31', 'link34')" onMouseOut="HideTip('tt31')">addMsTouchListenerMove</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Events.addMsTouchListenerEnd" id=link35 onMouseOver="ShowTip(event, 'tt32', 'link35')" onMouseOut="HideTip('tt32')">addMsTouchListenerEnd</a></td><td class=SDescription></td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.Properties"></a>Properties</h3></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.observers"></a>observers</h3><div class=CBody><p>{Object} A hashtable cache of the event observers.&nbsp; Keyed by element._eventCacheID</p></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.Constants"></a>Constants</h3></div></div>
<div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.KEY_SPACE"></a>KEY_SPACE</h3><div class=CBody><p>{int}</p></div></div></div>
<div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.KEY_BACKSPACE"></a>KEY_BACKSPACE</h3><div class=CBody><p>{int}</p></div></div></div>
<div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.KEY_TAB"></a>KEY_TAB</h3><div class=CBody><p>{int}</p></div></div></div>
<div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.KEY_RETURN"></a>KEY_RETURN</h3><div class=CBody><p>{int}</p></div></div></div>
<div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.KEY_ESC"></a>KEY_ESC</h3><div class=CBody><p>{int}</p></div></div></div>
<div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.KEY_LEFT"></a>KEY_LEFT</h3><div class=CBody><p>{int}</p></div></div></div>
<div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.KEY_UP"></a>KEY_UP</h3><div class=CBody><p>{int}</p></div></div></div>
<div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.KEY_RIGHT"></a>KEY_RIGHT</h3><div class=CBody><p>{int}</p></div></div></div>
<div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.KEY_DOWN"></a>KEY_DOWN</h3><div class=CBody><p>{int}</p></div></div></div>
<div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.KEY_DELETE"></a>KEY_DELETE</h3><div class=CBody><p>{int}</p></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.Functions"></a>Functions</h3></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.element"></a>element</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 prettyprint "nowrap>element: function(</td><td class="PParameter prettyprint " nowrap>event</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Cross browser event element detection.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>event</td><td class=CDLDescription>{Event}</td></tr></table><h4 class=CHeading>Returns</h4><p>{DOMElement} The element that caused the event</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.isSingleTouch"></a>isSingleTouch</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 prettyprint "nowrap>isSingleTouch: function(</td><td class="PParameter prettyprint " nowrap>event</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Determine whether event was caused by a single touch</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>event</td><td class=CDLDescription>{Event}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean}</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.isMultiTouch"></a>isMultiTouch</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 prettyprint "nowrap>isMultiTouch: function(</td><td class="PParameter prettyprint " nowrap>event</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Determine whether event was caused by a multi touch</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>event</td><td class=CDLDescription>{Event}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean}</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.isLeftClick"></a>isLeftClick</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 prettyprint "nowrap>isLeftClick: function(</td><td class="PParameter prettyprint " nowrap>event</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Determine whether event was caused by a left click.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>event</td><td class=CDLDescription>{Event}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean}</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.isRightClick"></a>isRightClick</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 prettyprint "nowrap>isRightClick: function(</td><td class="PParameter prettyprint " nowrap>event</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Determine whether event was caused by a right mouse click.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>event</td><td class=CDLDescription>{Event}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean}</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.stop"></a>stop</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 prettyprint "nowrap>stop: function(</td><td class="PParameter prettyprint " nowrap>event,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>allowDefault</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Stops an event from propagating.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>event</td><td class=CDLDescription>{Event}</td></tr><tr><td class=CDLEntry>allowDefault</td><td class=CDLDescription>{Boolean} If true, we stop the event chain but still allow the default browser behaviour (text selection, radio-button clicking, etc).&nbsp; Default is false.</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.preventDefault"></a>preventDefault</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 prettyprint "nowrap>preventDefault: function(</td><td class="PParameter prettyprint " nowrap>event</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Cancels the event if it is cancelable, without stopping further propagation of the event.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>event</td><td class=CDLDescription>{Event}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.findElement"></a>findElement</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 prettyprint "nowrap>findElement: function(</td><td class="PParameter prettyprint " nowrap>event,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>tagName</td><td class="PAfterParameters prettyprint "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>event</td><td class=CDLDescription>{Event}</td></tr><tr><td class=CDLEntry>tagName</td><td class=CDLDescription>{String}</td></tr></table><h4 class=CHeading>Returns</h4><p>{DOMElement} The first node with the given tagName, starting from the node the event was triggered on and traversing the DOM upwards</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.observe"></a>observe</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 prettyprint "nowrap>observe: function(</td><td class="PParameter prettyprint " nowrap>elementParam,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>name,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>observer,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>useCapture</td><td class="PAfterParameters prettyprint "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>elementParam</td><td class=CDLDescription>{DOMElement || String}</td></tr><tr><td class=CDLEntry>name</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>observer</td><td class=CDLDescription>{function}</td></tr><tr><td class=CDLEntry>useCapture</td><td class=CDLDescription>{Boolean}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.stopObservingElement"></a>stopObservingElement</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 prettyprint "nowrap>stopObservingElement: function(</td><td class="PParameter prettyprint " nowrap>elementParam</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Given the id of an element to stop observing, cycle through the element&rsquo;s cached observers, calling stopObserving on each one, skipping those entries which can no longer be removed.</p><h4 class=CHeading>parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>elementParam</td><td class=CDLDescription>{DOMElement || String}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event._removeElementObservers"></a>_removeElementObservers</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 prettyprint "nowrap>_removeElementObservers: function(</td><td class="PParameter prettyprint " nowrap>elementObservers</td><td class="PAfterParameters prettyprint "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>elementObservers</td><td class=CDLDescription>{Array(Object)} Array of (element, name, observer, usecapture) objects, taken directly from hashtable</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.stopObserving"></a>stopObserving</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 prettyprint "nowrap>stopObserving: function(</td><td class="PParameter prettyprint " nowrap>elementParam,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>name,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>observer,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>useCapture</td><td class="PAfterParameters prettyprint "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>elementParam</td><td class=CDLDescription>{DOMElement || String}</td></tr><tr><td class=CDLEntry>name</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>observer</td><td class=CDLDescription>{function}</td></tr><tr><td class=CDLEntry>useCapture</td><td class=CDLDescription>{Boolean}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean} Whether or not the event observer was removed</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Event.unloadCache"></a>unloadCache</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">unloadCache: function()</td></tr></table></blockquote><p>Cycle through all the element entries in the events cache and call stopObservingElement on each.</p></div></div></div>
<div class="CClass"><div class=CTopic><h2 class=CTitle><a name="OpenLayers.Events"></a>OpenLayers.<wbr>Events</h2><div class=CBody><!--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="SGroup"><td class=SEntry><a href="#OpenLayers.Events.Constants" >Constants</a></td><td class=SDescription></td></tr><tr class="SConstant SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.BROWSER_EVENTS" >BROWSER_EVENTS</a></td><td class=SDescription>{Array(String)} supported events</td></tr><tr class="SGroup"><td class=SEntry><a href="#OpenLayers.Events.Properties" >Properties</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.listeners" >listeners</a></td><td class=SDescription>{Object} Hashtable of Array(Function): events listener functions</td></tr><tr class="SProperty SIndent1"><td class=SEntry><a href="#OpenLayers.Events.object" >object</a></td><td class=SDescription>{Object} the code object issuing application events</td></tr><tr class="SProperty SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.element" >element</a></td><td class=SDescription>{DOMElement} the DOM element receiving browser events</td></tr><tr class="SProperty SIndent1"><td class=SEntry><a href="#OpenLayers.Events.eventHandler" >eventHandler</a></td><td class=SDescription>{Function} bound event handler attached to elements</td></tr><tr class="SProperty SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.fallThrough" >fallThrough</a></td><td class=SDescription>{Boolean}</td></tr><tr class="SProperty SIndent1"><td class=SEntry><a href="#OpenLayers.Events.includeXY" >includeXY</a></td><td class=SDescription>{Boolean} Should the .xy property automatically be created for browser mouse events?&nbsp; </td></tr><tr class="SProperty SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.extensions" >extensions</a></td><td class=SDescription>{Object} Event extensions registered with this instance. </td></tr><tr class="SProperty SIndent1"><td class=SEntry><a href="#OpenLayers.Events.extensionCount" >extensionCount</a></td><td class=SDescription>{Object} Keys are event types (like in <a href="#OpenLayers.Events.listeners" class=LProperty id=link36 onMouseOver="ShowTip(event, 'tt14', 'link36')" onMouseOut="HideTip('tt14')">listeners</a>), values are the number of extension listeners for each event type.</td></tr><tr class="SGroup"><td class=SEntry><a href="#OpenLayers.Events.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.clearMouseListener" >clearMouseListener</a></td><td class=SDescription>A version of <a href="#OpenLayers.Events.clearMouseCache" class=LFunction id=link37 onMouseOver="ShowTip(event, 'tt15', 'link37')" onMouseOut="HideTip('tt15')">clearMouseCache</a> that is bound to this instance so that it can be used with <a href="#OpenLayers.Event.observe" class=LFunction id=link38 onMouseOver="ShowTip(event, 'tt9', 'link38')" onMouseOut="HideTip('tt9')">OpenLayers.Event.observe</a> and <a href="#OpenLayers.Event.stopObserving" class=LFunction id=link39 onMouseOver="ShowTip(event, 'tt12', 'link39')" onMouseOut="HideTip('tt12')">OpenLayers.Event.stopObserving</a>.</td></tr><tr class="SGroup"><td class=SEntry><a href="#OpenLayers.Events.Constructor" >Constructor</a></td><td class=SDescription></td></tr><tr class="SConstructor SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.OpenLayers.Events" >OpenLayers.<wbr>Events</a></td><td class=SDescription>Construct an OpenLayers.Events object.</td></tr><tr class="SGroup"><td class=SEntry><a href="#OpenLayers.Events.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.destroy" id=link40 onMouseOver="ShowTip(event, 'tt16', 'link40')" onMouseOut="HideTip('tt16')">destroy</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Events.addEventType" id=link41 onMouseOver="ShowTip(event, 'tt17', 'link41')" onMouseOut="HideTip('tt17')">addEventType</a></td><td class=SDescription>Deprecated. </td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.attachToElement" id=link42 onMouseOver="ShowTip(event, 'tt18', 'link42')" onMouseOut="HideTip('tt18')">attachToElement</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Events.on" id=link43 onMouseOver="ShowTip(event, 'tt19', 'link43')" onMouseOut="HideTip('tt19')">on</a></td><td class=SDescription>Convenience method for registering listeners with a common scope. </td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.register" id=link44 onMouseOver="ShowTip(event, 'tt20', 'link44')" onMouseOut="HideTip('tt20')">register</a></td><td class=SDescription>Register an event on the events object.</td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Events.registerPriority" id=link45 onMouseOver="ShowTip(event, 'tt21', 'link45')" onMouseOut="HideTip('tt21')">registerPriority</a></td><td class=SDescription>Same as register() but adds the new listener to the <b>front</b> of the events queue instead of to the end.</td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.un" id=link46 onMouseOver="ShowTip(event, 'tt22', 'link46')" onMouseOut="HideTip('tt22')">un</a></td><td class=SDescription>Convenience method for unregistering listeners with a common scope. </td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Events.unregister" id=link47 onMouseOver="ShowTip(event, 'tt23', 'link47')" onMouseOut="HideTip('tt23')">unregister</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.remove" id=link48 onMouseOver="ShowTip(event, 'tt24', 'link48')" onMouseOut="HideTip('tt24')">remove</a></td><td class=SDescription>Remove all listeners for a given event type. </td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Events.triggerEvent" id=link49 onMouseOver="ShowTip(event, 'tt25', 'link49')" onMouseOut="HideTip('tt25')">triggerEvent</a></td><td class=SDescription>Trigger a specified registered event.</td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.handleBrowserEvent" id=link50 onMouseOver="ShowTip(event, 'tt26', 'link50')" onMouseOut="HideTip('tt26')">handleBrowserEvent</a></td><td class=SDescription>Basically just a wrapper to the triggerEvent() function, but takes care to set a property &lsquo;xy&rsquo; on the event with the current mouse position.</td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Events.getTouchClientXY" id=link51 onMouseOver="ShowTip(event, 'tt27', 'link51')" onMouseOut="HideTip('tt27')">getTouchClientXY</a></td><td class=SDescription>WebKit has a few bugs for clientX/clientY. </td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.clearMouseCache" id=link52 onMouseOver="ShowTip(event, 'tt15', 'link52')" onMouseOut="HideTip('tt15')">clearMouseCache</a></td><td class=SDescription>Clear cached data about the mouse position. </td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Events.getMousePosition" id=link53 onMouseOver="ShowTip(event, 'tt28', 'link53')" onMouseOut="HideTip('tt28')">getMousePosition</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.addMsTouchListener" id=link54 onMouseOver="ShowTip(event, 'tt29', 'link54')" onMouseOut="HideTip('tt29')">addMsTouchListener</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Events.addMsTouchListenerStart" id=link55 onMouseOver="ShowTip(event, 'tt30', 'link55')" onMouseOut="HideTip('tt30')">addMsTouchListenerStart</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Events.addMsTouchListenerMove" id=link56 onMouseOver="ShowTip(event, 'tt31', 'link56')" onMouseOut="HideTip('tt31')">addMsTouchListenerMove</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Events.addMsTouchListenerEnd" id=link57 onMouseOver="ShowTip(event, 'tt32', 'link57')" onMouseOut="HideTip('tt32')">addMsTouchListenerEnd</a></td><td class=SDescription></td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.Constants"></a>Constants</h3></div></div>
<div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.BROWSER_EVENTS"></a>BROWSER_EVENTS</h3><div class=CBody><p>{Array(String)} supported events</p></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.Properties"></a>Properties</h3></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.listeners"></a>listeners</h3><div class=CBody><p>{Object} Hashtable of Array(Function): events listener functions</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.object"></a>object</h3><div class=CBody><p>{Object} the code object issuing application events</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.element"></a>element</h3><div class=CBody><p>{DOMElement} the DOM element receiving browser events</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.eventHandler"></a>eventHandler</h3><div class=CBody><p>{Function} bound event handler attached to elements</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.fallThrough"></a>fallThrough</h3><div class=CBody><p>{Boolean}</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.includeXY"></a>includeXY</h3><div class=CBody><p>{Boolean} Should the .xy property automatically be created for browser mouse events?&nbsp; In general, this should be false.&nbsp; If it is true, then mouse events will automatically generate a &lsquo;.xy&rsquo; property on the event object that is passed.&nbsp; (Prior to OpenLayers 2.7, this was true by default.)&nbsp; Otherwise, you can call the getMousePosition on the relevant events handler on the object available via the &lsquo;evt.object&rsquo; property of the evt object.&nbsp; So, for most events, you can call: function named(evt) { this.xy = this.object.events.getMousePosition(evt) }</p><h4 class=CHeading>This option typically defaults to false for performance reasons</h4><p>when creating an events object whose primary purpose is to manage relatively positioned mouse events within a div, it may make sense to set it to true.</p><p>This option is also used to control whether the events object caches offsets.&nbsp; If this is false, it will not: the reason for this is that it is only expected to be called many times if the includeXY property is set to true.&nbsp; If you set this to true, you are expected to clear the offset cache manually (using this.clearMouseCache()) if: the border of the element changes the location of the element in the page changes</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.extensions"></a>extensions</h3><div class=CBody><p>{Object} Event extensions registered with this instance.&nbsp; Keys are event types, values are {OpenLayers.Events.*} extension instances or {Boolean} for events that an instantiated extension provides in addition to the one it was created for.</p><p>Extensions create an event in addition to browser events, which usually fires when a sequence of browser events is completed.&nbsp; Extensions are automatically instantiated when a listener is registered for an event provided by an extension.</p><p>Extensions are created in the <a href="#OpenLayers.Events.OpenLayers.Events" class=LConstructor id=link58 onMouseOver="ShowTip(event, 'tt33', 'link58')" onMouseOut="HideTip('tt33')">OpenLayers.Events</a> namespace using <a href="../deprecated-js.html#OpenLayers.Class" class=LClass >OpenLayers.Class</a>, and named after the event they provide.&nbsp; The constructor receives the target <a href="#OpenLayers.Events.OpenLayers.Events" class=LConstructor id=link59 onMouseOver="ShowTip(event, 'tt33', 'link59')" onMouseOut="HideTip('tt33')">OpenLayers.Events</a> instance as argument.&nbsp; Extensions that need to capture browser events before they propagate can register their listeners events using <a href="#OpenLayers.Events.register" class=LFunction id=link60 onMouseOver="ShowTip(event, 'tt20', 'link60')" onMouseOut="HideTip('tt20')">register</a>, with {extension: true} as 4th argument.</p><p>If an extension creates more than one event, an alias for each event type should be created and reference the same class.&nbsp; The constructor should set a reference in the target&rsquo;s extensions registry to itself.</p><p>Below is a minimal extension that provides the &ldquo;foostart&rdquo; and &ldquo;fooend&rdquo; event types, which replace the native &ldquo;click&rdquo; event type if clicked on an element with the css class &ldquo;foo&rdquo;:</p><blockquote><pre class="prettyprint">OpenLayers.Events.foostart = OpenLayers.Class({
initialize: function(target) {
this.target = target;
this.target.register(&quot;click&quot;, this, this.doStuff, {extension: true});
// only required if extension provides more than one event type
this.target.extensions[&quot;foostart&quot;] = true;
this.target.extensions[&quot;fooend&quot;] = true;
},
destroy: function() {
var target = this.target;
target.unregister(&quot;click&quot;, this, this.doStuff);
delete this.target;
// only required if extension provides more than one event type
delete target.extensions[&quot;foostart&quot;];
delete target.extensions[&quot;fooend&quot;];
},
doStuff: function(evt) {
var propagate = true;
if (OpenLayers.Event.element(evt).className === &quot;foo&quot;) {
propagate = false;
var target = this.target;
target.triggerEvent(&quot;foostart&quot;);
window.setTimeout(function() {
target.triggerEvent(&quot;fooend&quot;);
}, 1000);
}
return propagate;
}
});
// only required if extension provides more than one event type
OpenLayers.Events.fooend = OpenLayers.Events.foostart;</pre></blockquote></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.extensionCount"></a>extensionCount</h3><div class=CBody><p>{Object} Keys are event types (like in <a href="#OpenLayers.Events.listeners" class=LProperty id=link61 onMouseOver="ShowTip(event, 'tt14', 'link61')" onMouseOut="HideTip('tt14')">listeners</a>), values are the number of extension listeners for each event type.</p></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.Functions"></a>Functions</h3></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.clearMouseListener"></a>clearMouseListener</h3><div class=CBody><p>A version of <a href="#OpenLayers.Events.clearMouseCache" class=LFunction id=link62 onMouseOver="ShowTip(event, 'tt15', 'link62')" onMouseOut="HideTip('tt15')">clearMouseCache</a> that is bound to this instance so that it can be used with <a href="#OpenLayers.Event.observe" class=LFunction id=link63 onMouseOver="ShowTip(event, 'tt9', 'link63')" onMouseOut="HideTip('tt9')">OpenLayers.Event.observe</a> and <a href="#OpenLayers.Event.stopObserving" class=LFunction id=link64 onMouseOver="ShowTip(event, 'tt12', 'link64')" onMouseOut="HideTip('tt12')">OpenLayers.Event.stopObserving</a>.</p></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.Constructor"></a>Constructor</h3></div></div>
<div class="CConstructor"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.OpenLayers.Events"></a>OpenLayers.<wbr>Events</h3><div class=CBody><p>Construct an OpenLayers.Events object.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>object</td><td class=CDLDescription>{Object} The js object to which this Events object is being added</td></tr><tr><td class=CDLEntry>element</td><td class=CDLDescription>{DOMElement} A dom element to respond to browser events</td></tr><tr><td class=CDLEntry>eventTypes</td><td class=CDLDescription>{Array(String)} Deprecated.&nbsp; Array of custom application events.&nbsp; A listener may be registered for any named event, regardless of the values provided here.</td></tr><tr><td class=CDLEntry>fallThrough</td><td class=CDLDescription>{Boolean} Allow events to fall through after these have been handled?</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} Options for the events object.</td></tr></table></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.Functions"></a>Functions</h3></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.destroy"></a>destroy</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">destroy: function ()</td></tr></table></blockquote></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.addEventType"></a>addEventType</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 prettyprint "nowrap>addEventType: function(</td><td class="PParameter prettyprint " nowrap>eventName</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Deprecated.&nbsp; Any event can be triggered without adding it first.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>eventName</td><td class=CDLDescription>{String}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.attachToElement"></a>attachToElement</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 prettyprint "nowrap>attachToElement: function (</td><td class="PParameter prettyprint " nowrap>element</td><td class="PAfterParameters prettyprint "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>element</td><td class=CDLDescription>{HTMLDOMElement} a DOM element to attach browser events to</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.on"></a>on</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 prettyprint "nowrap>on: function(</td><td class="PParameter prettyprint " nowrap>object</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Convenience method for registering listeners with a common scope.&nbsp; Internally, this method calls <a href="#OpenLayers.Events.register" class=LFunction id=link65 onMouseOver="ShowTip(event, 'tt20', 'link65')" onMouseOut="HideTip('tt20')">register</a> as shown in the examples below.</p><h4 class=CHeading>Example use</h4><blockquote><pre class="prettyprint">// register a single listener for the &quot;loadstart&quot; event
events.on({&quot;loadstart&quot;: loadStartListener});
// this is equivalent to the following
events.register(&quot;loadstart&quot;, undefined, loadStartListener);
// register multiple listeners to be called with the same `this` object
events.on({
&quot;loadstart&quot;: loadStartListener,
&quot;loadend&quot;: loadEndListener,
scope: object
});
// this is equivalent to the following
events.register(&quot;loadstart&quot;, object, loadStartListener);
events.register(&quot;loadend&quot;, object, loadEndListener);</pre></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>object</td><td class=CDLDescription>{Object}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.register"></a>register</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 prettyprint "nowrap>register: function (</td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>obj,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>func,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>priority</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Register an event on the events object.</p><p>When the event is triggered, the &lsquo;func&rsquo; function will be called, in the context of &lsquo;obj&rsquo;.&nbsp; Imagine we were to register an event, specifying an OpenLayers.Bounds Object as &lsquo;obj&rsquo;.&nbsp; When the event is triggered, the context in the callback function will be our Bounds object.&nbsp; This means that within our callback function, we can access the properties and methods of the Bounds object through the &ldquo;this&rdquo; variable.&nbsp; So our callback could execute something like:</p><blockquote><pre>leftStr = &quot;Left: &quot; + this.left;</pre></blockquote><p>or</p><blockquote><pre>centerStr = &quot;Center: &quot; + this.getCenterLonLat();</pre></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>type</td><td class=CDLDescription>{String} Name of the event to register</td></tr><tr><td class=CDLEntry>obj</td><td class=CDLDescription>{Object} The object to bind the context to for the callback#.&nbsp; If no object is specified, default is the Events&rsquo;s &lsquo;object&rsquo; property.</td></tr><tr><td class=CDLEntry>func</td><td class=CDLDescription>{Function} The callback function.&nbsp; If no callback is specified, this function does nothing.</td></tr><tr><td class=CDLEntry>priority</td><td class=CDLDescription>{Boolean|Object} If true, adds the new listener to the <b>front</b> of the events queue instead of to the end.</td></tr></table><h4 class=CHeading>Valid options for priority</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>extension</td><td class=CDLDescription>{Boolean} If true, then the event will be registered as extension event.&nbsp; Extension events are handled before all other events.</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.registerPriority"></a>registerPriority</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 prettyprint "nowrap>registerPriority: function (</td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>obj,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>func</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Same as register() but adds the new listener to the <b>front</b> of the events queue instead of to the end.</p><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>TODO: get rid of this in 3.0</td><td class=CDLDescription>Decide whether listeners should be called in the order they were registered or in reverse order.</td></tr></table><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>type</td><td class=CDLDescription>{String} Name of the event to register</td></tr><tr><td class=CDLEntry>obj</td><td class=CDLDescription>{Object} The object to bind the context to for the callback#.&nbsp; If no object is specified, default is the Events&rsquo;s &lsquo;object&rsquo; property.</td></tr><tr><td class=CDLEntry>func</td><td class=CDLDescription>{Function} The callback function.&nbsp; If no callback is specified, this function does nothing.</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.un"></a>un</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 prettyprint "nowrap>un: function(</td><td class="PParameter prettyprint " nowrap>object</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Convenience method for unregistering listeners with a common scope.&nbsp; Internally, this method calls <a href="#OpenLayers.Events.unregister" class=LFunction id=link66 onMouseOver="ShowTip(event, 'tt23', 'link66')" onMouseOut="HideTip('tt23')">unregister</a> as shown in the examples below.</p><h4 class=CHeading>Example use</h4><blockquote><pre class="prettyprint">// unregister a single listener for the &quot;loadstart&quot; event
events.un({&quot;loadstart&quot;: loadStartListener});
// this is equivalent to the following
events.unregister(&quot;loadstart&quot;, undefined, loadStartListener);
// unregister multiple listeners with the same `this` object
events.un({
&quot;loadstart&quot;: loadStartListener,
&quot;loadend&quot;: loadEndListener,
scope: object
});
// this is equivalent to the following
events.unregister(&quot;loadstart&quot;, object, loadStartListener);
events.unregister(&quot;loadend&quot;, object, loadEndListener);</pre></blockquote></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.unregister"></a>unregister</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 prettyprint "nowrap>unregister: function (</td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>obj,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>func</td><td class="PAfterParameters prettyprint "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>type</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>obj</td><td class=CDLDescription>{Object} If none specified, defaults to this.object</td></tr><tr><td class=CDLEntry>func</td><td class=CDLDescription>{Function}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.remove"></a>remove</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 prettyprint "nowrap>remove: function(</td><td class="PParameter prettyprint " nowrap>type</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Remove all listeners for a given event type.&nbsp; If type is not registered, does nothing.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>type</td><td class=CDLDescription>{String}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.triggerEvent"></a>triggerEvent</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 prettyprint "nowrap>triggerEvent: function (</td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>evt</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Trigger a specified registered event.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>type</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>evt</td><td class=CDLDescription>{Event || Object} will be passed to the listeners.</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean} The last listener return.&nbsp; If a listener returns false, the chain of listeners will stop getting called.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.handleBrowserEvent"></a>handleBrowserEvent</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 prettyprint "nowrap>handleBrowserEvent: function (</td><td class="PParameter prettyprint " nowrap>evt</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Basically just a wrapper to the triggerEvent() function, but takes care to set a property &lsquo;xy&rsquo; on the event with the current mouse position.</p><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>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.getTouchClientXY"></a>getTouchClientXY</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 prettyprint "nowrap>getTouchClientXY: function (</td><td class="PParameter prettyprint " nowrap>evt</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>WebKit has a few bugs for clientX/clientY.&nbsp; This method detects them and calculate the correct values.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>evt</td><td class=CDLDescription>{Touch} a Touch object from a TouchEvent</td></tr></table><h4 class=CHeading>Returns</h4><p>{Object} An object with only clientX and clientY properties with the calculated values.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.clearMouseCache"></a>clearMouseCache</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">clearMouseCache: function()</td></tr></table></blockquote><p>Clear cached data about the mouse position.&nbsp; This should be called any time the element that events are registered on changes position within the page.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.getMousePosition"></a>getMousePosition</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 prettyprint "nowrap>getMousePosition: function (</td><td class="PParameter prettyprint " nowrap>evt</td><td class="PAfterParameters prettyprint "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>evt</td><td class=CDLDescription>{Event}</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="BaseTypes/Pixel-js.html#OpenLayers.Pixel" class=LClass id=link67 onMouseOver="ShowTip(event, 'tt34', 'link67')" onMouseOut="HideTip('tt34')">OpenLayers.Pixel</a>} The current xy coordinate of the mouse, adjusted for offsets</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.addMsTouchListener"></a>addMsTouchListener</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 prettyprint "nowrap>addMsTouchListener: function (</td><td class="PParameter prettyprint " nowrap>element,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>handler</td><td class="PAfterParameters prettyprint "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>element</td><td class=CDLDescription>{DOMElement} The DOM element to register the listener on</td></tr><tr><td class=CDLEntry>type</td><td class=CDLDescription>{String} The event type</td></tr><tr><td class=CDLEntry>handler</td><td class=CDLDescription>{Function} the handler</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.addMsTouchListenerStart"></a>addMsTouchListenerStart</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 prettyprint "nowrap>addMsTouchListenerStart: function(</td><td class="PParameter prettyprint " nowrap>element,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>handler</td><td class="PAfterParameters prettyprint "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>element</td><td class=CDLDescription>{DOMElement} The DOM element to register the listener on</td></tr><tr><td class=CDLEntry>type</td><td class=CDLDescription>{String} The event type</td></tr><tr><td class=CDLEntry>handler</td><td class=CDLDescription>{Function} the handler</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.addMsTouchListenerMove"></a>addMsTouchListenerMove</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 prettyprint "nowrap>addMsTouchListenerMove: function (</td><td class="PParameter prettyprint " nowrap>element,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>handler</td><td class="PAfterParameters prettyprint "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>element</td><td class=CDLDescription>{DOMElement} The DOM element to register the listener on</td></tr><tr><td class=CDLEntry>type</td><td class=CDLDescription>{String} The event type</td></tr><tr><td class=CDLEntry>handler</td><td class=CDLDescription>{Function} the handler</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Events.addMsTouchListenerEnd"></a>addMsTouchListenerEnd</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 prettyprint "nowrap>addMsTouchListenerEnd: function (</td><td class="PParameter prettyprint " nowrap>element,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>handler</td><td class="PAfterParameters prettyprint "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>element</td><td class=CDLDescription>{DOMElement} The DOM element to register the listener on</td></tr><tr><td class=CDLEntry>type</td><td class=CDLDescription>{String} The event type</td></tr><tr><td class=CDLEntry>handler</td><td class=CDLDescription>{Function} the handler</td></tr></table></div></div></div>
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<!--START_ND_TOOLTIPS-->
<div class=CToolTip id="tt1"><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 prettyprint "nowrap>element: function(</td><td class="PParameter prettyprint " nowrap>event</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Cross browser event element detection.</div></div><div class=CToolTip id="tt2"><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 prettyprint "nowrap>isSingleTouch: function(</td><td class="PParameter prettyprint " nowrap>event</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Determine whether event was caused by a single touch</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 prettyprint "nowrap>isMultiTouch: function(</td><td class="PParameter prettyprint " nowrap>event</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Determine whether event was caused by a multi touch</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 prettyprint "nowrap>isLeftClick: function(</td><td class="PParameter prettyprint " nowrap>event</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Determine whether event was caused by a left click.</div></div><div class=CToolTip id="tt5"><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 prettyprint "nowrap>isRightClick: function(</td><td class="PParameter prettyprint " nowrap>event</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Determine whether event was caused by a right mouse click.</div></div><div class=CToolTip id="tt6"><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 prettyprint "nowrap>stop: function(</td><td class="PParameter prettyprint " nowrap>event,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>allowDefault</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Stops an event from propagating.</div></div><div class=CToolTip id="tt7"><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 prettyprint "nowrap>preventDefault: function(</td><td class="PParameter prettyprint " nowrap>event</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Cancels the event if it is cancelable, without stopping further propagation of the event.</div></div><div class=CToolTip id="tt8"><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 prettyprint "nowrap>findElement: function(</td><td class="PParameter prettyprint " nowrap>event,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>tagName</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt9"><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 prettyprint "nowrap>observe: function(</td><td class="PParameter prettyprint " nowrap>elementParam,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>name,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>observer,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>useCapture</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt10"><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 prettyprint "nowrap>stopObservingElement: function(</td><td class="PParameter prettyprint " nowrap>elementParam</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Given the id of an element to stop observing, cycle through the element&rsquo;s cached observers, calling stopObserving on each one, skipping those entries which can no longer be removed.</div></div><div class=CToolTip id="tt11"><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 prettyprint "nowrap>_removeElementObservers: function(</td><td class="PParameter prettyprint " nowrap>elementObservers</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt12"><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 prettyprint "nowrap>stopObserving: function(</td><td class="PParameter prettyprint " nowrap>elementParam,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>name,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>observer,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>useCapture</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt13"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">unloadCache: function()</td></tr></table></blockquote>Cycle through all the element entries in the events cache and call stopObservingElement on each.</div></div><div class=CToolTip id="tt14"><div class=CProperty>{Object} Hashtable of Array(Function): events listener functions</div></div><div class=CToolTip id="tt15"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">clearMouseCache: function()</td></tr></table></blockquote>Clear cached data about the mouse position. </div></div><div class=CToolTip id="tt16"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">destroy: function ()</td></tr></table></blockquote></div></div><div class=CToolTip id="tt17"><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 prettyprint "nowrap>addEventType: function(</td><td class="PParameter prettyprint " nowrap>eventName</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Deprecated. </div></div><div class=CToolTip id="tt18"><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 prettyprint "nowrap>attachToElement: function (</td><td class="PParameter prettyprint " nowrap>element</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt19"><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 prettyprint "nowrap>on: function(</td><td class="PParameter prettyprint " nowrap>object</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Convenience method for registering listeners with a common scope. </div></div><div class=CToolTip id="tt20"><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 prettyprint "nowrap>register: function (</td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>obj,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>func,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>priority</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Register an event on the events object.</div></div><div class=CToolTip id="tt21"><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 prettyprint "nowrap>registerPriority: function (</td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>obj,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>func</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Same as register() but adds the new listener to the <b>front</b> of the events queue instead of to the end.</div></div><div class=CToolTip id="tt22"><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 prettyprint "nowrap>un: function(</td><td class="PParameter prettyprint " nowrap>object</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Convenience method for unregistering listeners with a common scope. </div></div><div class=CToolTip id="tt23"><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 prettyprint "nowrap>unregister: function (</td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>obj,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>func</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt24"><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 prettyprint "nowrap>remove: function(</td><td class="PParameter prettyprint " nowrap>type</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Remove all listeners for a given event type. </div></div><div class=CToolTip id="tt25"><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 prettyprint "nowrap>triggerEvent: function (</td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>evt</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Trigger a specified registered event.</div></div><div class=CToolTip id="tt26"><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 prettyprint "nowrap>handleBrowserEvent: function (</td><td class="PParameter prettyprint " nowrap>evt</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Basically just a wrapper to the triggerEvent() function, but takes care to set a property &lsquo;xy&rsquo; on the event with the current mouse position.</div></div><div class=CToolTip id="tt27"><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 prettyprint "nowrap>getTouchClientXY: function (</td><td class="PParameter prettyprint " nowrap>evt</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>WebKit has a few bugs for clientX/clientY. </div></div><div class=CToolTip id="tt28"><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 prettyprint "nowrap>getMousePosition: function (</td><td class="PParameter prettyprint " nowrap>evt</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt29"><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 prettyprint "nowrap>addMsTouchListener: function (</td><td class="PParameter prettyprint " nowrap>element,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>handler</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt30"><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 prettyprint "nowrap>addMsTouchListenerStart: function(</td><td class="PParameter prettyprint " nowrap>element,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>handler</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt31"><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 prettyprint "nowrap>addMsTouchListenerMove: function (</td><td class="PParameter prettyprint " nowrap>element,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>handler</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt32"><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 prettyprint "nowrap>addMsTouchListenerEnd: function (</td><td class="PParameter prettyprint " nowrap>element,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>handler</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt33"><div class=CConstructor>Construct an OpenLayers.Events object.</div></div><div class=CToolTip id="tt34"><div class=CClass>This class represents a screen coordinate, in x and y coordinates</div></div><!--END_ND_TOOLTIPS-->
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