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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’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? </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 ‘xy’ 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. 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). 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’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? </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 ‘xy’ 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? In general, this should be false. If it is true, then mouse events will automatically generate a ‘.xy’ property on the event object that is passed. (Prior to OpenLayers 2.7, this was true by default.) Otherwise, you can call the getMousePosition on the relevant events handler on the object available via the ‘evt.object’ property of the evt object. 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. 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. 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. 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. 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. 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. 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. The constructor should set a reference in the target’s extensions registry to itself.</p><p>Below is a minimal extension that provides the “foostart” and “fooend” event types, which replace the native “click” event type if clicked on an element with the css class “foo”:</p><blockquote><pre class="prettyprint">OpenLayers.Events.foostart = OpenLayers.Class({
initialize: function(target) {
this.target = target;
this.target.register("click", this, this.doStuff, {extension: true});
// only required if extension provides more than one event type
this.target.extensions["foostart"] = true;
this.target.extensions["fooend"] = true;
},
destroy: function() {
var target = this.target;
target.unregister("click", this, this.doStuff);
delete this.target;
// only required if extension provides more than one event type
delete target.extensions["foostart"];
delete target.extensions["fooend"];
},
doStuff: function(evt) {
var propagate = true;
if (OpenLayers.Event.element(evt).className === "foo") {
propagate = false;
var target = this.target;
target.triggerEvent("foostart");
window.setTimeout(function() {
target.triggerEvent("fooend");
}, 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. Array of custom application events. 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. 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. 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 "loadstart" event
events.on({"loadstart": loadStartListener});
// this is equivalent to the following
events.register("loadstart", undefined, loadStartListener);
// register multiple listeners to be called with the same `this` object
events.on({
"loadstart": loadStartListener,
"loadend": loadEndListener,
scope: object
});
// this is equivalent to the following
events.register("loadstart", object, loadStartListener);
events.register("loadend", 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 ‘func’ function will be called, in the context of ‘obj’. Imagine we were to register an event, specifying an OpenLayers.Bounds Object as ‘obj’. When the event is triggered, the context in the callback function will be our Bounds object. This means that within our callback function, we can access the properties and methods of the Bounds object through the “this” variable. So our callback could execute something like:</p><blockquote><pre>leftStr = "Left: " + this.left;</pre></blockquote><p>or</p><blockquote><pre>centerStr = "Center: " + 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#. If no object is specified, default is the Events’s ‘object’ property.</td></tr><tr><td class=CDLEntry>func</td><td class=CDLDescription>{Function} The callback function. 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. 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#. If no object is specified, default is the Events’s ‘object’ property.</td></tr><tr><td class=CDLEntry>func</td><td class=CDLDescription>{Function} The callback function. 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. 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 "loadstart" event
events.un({"loadstart": loadStartListener});
// this is equivalent to the following
events.unregister("loadstart", undefined, loadStartListener);
// unregister multiple listeners with the same `this` object
events.un({
"loadstart": loadStartListener,
"loadend": loadEndListener,
scope: object
});
// this is equivalent to the following
events.unregister("loadstart", object, loadStartListener);
events.unregister("loadend", 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. 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. 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 ‘xy’ 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. 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. 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’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 ‘xy’ 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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