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<div id=Content><div class="CClass"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="mxConstraintHandler"></a>mxConstraintHandler</h1><div class=CBody><p>Handles constraints on connection targets.&nbsp; This class is in charge of showing fixed points when the mouse is over a vertex and handles constraints to establish new connections.</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="#mxConstraintHandler" >mxConstraintHandler</a></td><td class=SDescription>Handles constraints on connection targets. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#mxConstraintHandler.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#mxConstraintHandler.mxConstraintHandler" id=link1 onMouseOver="ShowTip(event, 'tt1', 'link1')" onMouseOut="HideTip('tt1')">mxConstraintHandler</a></td><td class=SDescription>Constructs an new constraint handler.</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#mxConstraintHandler.Variables" >Variables</a></td><td class=SDescription></td></tr><tr class="SVariable SIndent2 SMarked"><td class=SEntry><a href="#mxConstraintHandler.pointImage" id=link2 onMouseOver="ShowTip(event, 'tt2', 'link2')" onMouseOut="HideTip('tt2')">pointImage</a></td><td class=SDescription><a href="../util/mxImage-js.html#mxImage" class=LClass id=link3 onMouseOver="ShowTip(event, 'tt3', 'link3')" onMouseOut="HideTip('tt3')">mxImage</a> to be used as the image for fixed connection points.</td></tr><tr class="SVariable SIndent2"><td class=SEntry><a href="#mxConstraintHandler.graph" id=link4 onMouseOver="ShowTip(event, 'tt4', 'link4')" onMouseOut="HideTip('tt4')">graph</a></td><td class=SDescription>Reference to the enclosing <a href="../view/mxGraph-js.html#mxGraph" class=LClass id=link5 onMouseOver="ShowTip(event, 'tt5', 'link5')" onMouseOut="HideTip('tt5')">mxGraph</a>.</td></tr><tr class="SVariable SIndent2 SMarked"><td class=SEntry><a href="#mxConstraintHandler.enabled" id=link6 onMouseOver="ShowTip(event, 'tt6', 'link6')" onMouseOut="HideTip('tt6')">enabled</a></td><td class=SDescription>Specifies if events are handled. </td></tr><tr class="SVariable SIndent2"><td class=SEntry><a href="#mxConstraintHandler.highlightColor" id=link7 onMouseOver="ShowTip(event, 'tt7', 'link7')" onMouseOut="HideTip('tt7')">highlightColor</a></td><td class=SDescription>Specifies the color for the highlight. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#mxConstraintHandler.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#mxConstraintHandler.isEnabled" id=link8 onMouseOver="ShowTip(event, 'tt8', 'link8')" onMouseOut="HideTip('tt8')">isEnabled</a></td><td class=SDescription>Returns true if events are handled. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#mxConstraintHandler.setEnabled" id=link9 onMouseOver="ShowTip(event, 'tt9', 'link9')" onMouseOut="HideTip('tt9')">setEnabled</a></td><td class=SDescription>Enables or disables event handling. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#mxConstraintHandler.reset" id=link10 onMouseOver="ShowTip(event, 'tt10', 'link10')" onMouseOut="HideTip('tt10')">reset</a></td><td class=SDescription>Resets the state of this handler.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#mxConstraintHandler.getTolerance" id=link11 onMouseOver="ShowTip(event, 'tt11', 'link11')" onMouseOut="HideTip('tt11')">getTolerance</a></td><td class=SDescription>Returns the tolerance to be used for intersecting connection points. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#mxConstraintHandler.getImageForConstraint" id=link12 onMouseOver="ShowTip(event, 'tt12', 'link12')" onMouseOut="HideTip('tt12')">getImageForConstraint</a></td><td class=SDescription>Returns the tolerance to be used for intersecting connection points.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#mxConstraintHandler.isEventIgnored" id=link13 onMouseOver="ShowTip(event, 'tt13', 'link13')" onMouseOut="HideTip('tt13')">isEventIgnored</a></td><td class=SDescription>Returns true if the given <a href="../util/mxMouseEvent-js.html#mxMouseEvent" class=LClass id=link14 onMouseOver="ShowTip(event, 'tt14', 'link14')" onMouseOut="HideTip('tt14')">mxMouseEvent</a> should be ignored in <a href="#mxConstraintHandler.update" class=LFunction id=link15 onMouseOver="ShowTip(event, 'tt15', 'link15')" onMouseOut="HideTip('tt15')">update</a>. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#mxConstraintHandler.isStateIgnored" id=link16 onMouseOver="ShowTip(event, 'tt16', 'link16')" onMouseOut="HideTip('tt16')">isStateIgnored</a></td><td class=SDescription>Returns true if the given state should be ignored. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#mxConstraintHandler.destroyIcons" id=link17 onMouseOver="ShowTip(event, 'tt17', 'link17')" onMouseOut="HideTip('tt17')">destroyIcons</a></td><td class=SDescription>Destroys the &lt;focusIcons&gt; if they exist.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#mxConstraintHandler.destroyFocusHighlight" id=link18 onMouseOver="ShowTip(event, 'tt18', 'link18')" onMouseOut="HideTip('tt18')">destroyFocusHighlight</a></td><td class=SDescription>Destroys the &lt;focusHighlight&gt; if one exists.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#mxConstraintHandler.isKeepFocusEvent" id=link19 onMouseOver="ShowTip(event, 'tt19', 'link19')" onMouseOut="HideTip('tt19')">isKeepFocusEvent</a></td><td class=SDescription>Returns true if the current focused state should not be changed for the given event. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#mxConstraintHandler.getCellForEvent" id=link20 onMouseOver="ShowTip(event, 'tt20', 'link20')" onMouseOut="HideTip('tt20')">getCellForEvent</a></td><td class=SDescription>Returns the cell for the given event.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#mxConstraintHandler.update" id=link21 onMouseOver="ShowTip(event, 'tt15', 'link21')" onMouseOut="HideTip('tt15')">update</a></td><td class=SDescription>Updates the state of this handler based on the given <a href="../util/mxMouseEvent-js.html#mxMouseEvent" class=LClass id=link22 onMouseOver="ShowTip(event, 'tt14', 'link22')" onMouseOut="HideTip('tt14')">mxMouseEvent</a>. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#mxConstraintHandler.redraw" id=link23 onMouseOver="ShowTip(event, 'tt21', 'link23')" onMouseOut="HideTip('tt21')">redraw</a></td><td class=SDescription>Transfers the focus to the given state as a source or target terminal. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#mxConstraintHandler.setFocus" id=link24 onMouseOver="ShowTip(event, 'tt22', 'link24')" onMouseOut="HideTip('tt22')">setFocus</a></td><td class=SDescription>Transfers the focus to the given state as a source or target terminal. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#mxConstraintHandler.createHighlightShape" id=link25 onMouseOver="ShowTip(event, 'tt23', 'link25')" onMouseOut="HideTip('tt23')">createHighlightShape</a></td><td class=SDescription>Create the shape used to paint the highlight.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#mxConstraintHandler.intersects" id=link26 onMouseOver="ShowTip(event, 'tt24', 'link26')" onMouseOut="HideTip('tt24')">intersects</a></td><td class=SDescription>Returns true if the given icon intersects the given rectangle.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#mxConstraintHandler.destroy" id=link27 onMouseOver="ShowTip(event, 'tt25', 'link27')" onMouseOut="HideTip('tt25')">destroy</a></td><td class=SDescription>Destroy this handler.</td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.Functions"></a>Functions</h3></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.mxConstraintHandler"></a>mxConstraintHandler</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>function mxConstraintHandler(</td><td class="PParameter prettyprint " nowrap>graph</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Constructs an new constraint handler.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>graph</td><td class=CDLDescription>Reference to the enclosing <a href="../view/mxGraph-js.html#mxGraph" class=LClass id=link28 onMouseOver="ShowTip(event, 'tt5', 'link28')" onMouseOut="HideTip('tt5')">mxGraph</a>.</td></tr><tr><td class=CDLEntry>factoryMethod</td><td class=CDLDescription>Optional function to create the edge.&nbsp; The function takes the source and target <a href="../model/mxCell-js.html#mxCell" class=LClass id=link29 onMouseOver="ShowTip(event, 'tt26', 'link29')" onMouseOut="HideTip('tt26')">mxCell</a> as the first and second argument and returns the <a href="../model/mxCell-js.html#mxCell" class=LClass id=link30 onMouseOver="ShowTip(event, 'tt26', 'link30')" onMouseOut="HideTip('tt26')">mxCell</a> that represents the new edge.</td></tr></table></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.Variables"></a>Variables</h3></div></div>
<div class="CVariable"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.pointImage"></a>pointImage</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.pointImage</td></tr></table></blockquote><p><a href="../util/mxImage-js.html#mxImage" class=LClass id=link31 onMouseOver="ShowTip(event, 'tt3', 'link31')" onMouseOut="HideTip('tt3')">mxImage</a> to be used as the image for fixed connection points.</p></div></div></div>
<div class="CVariable"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.graph"></a>graph</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.graph</td></tr></table></blockquote><p>Reference to the enclosing <a href="../view/mxGraph-js.html#mxGraph" class=LClass id=link32 onMouseOver="ShowTip(event, 'tt5', 'link32')" onMouseOut="HideTip('tt5')">mxGraph</a>.</p></div></div></div>
<div class="CVariable"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.enabled"></a>enabled</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.enabled</td></tr></table></blockquote><p>Specifies if events are handled.&nbsp; Default is true.</p></div></div></div>
<div class="CVariable"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.highlightColor"></a>highlightColor</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.highlightColor</td></tr></table></blockquote><p>Specifies the color for the highlight.&nbsp; Default is <a href="../util/mxConstants-js.html#mxConstants.DEFAULT_VALID_COLOR" class=LVariable id=link33 onMouseOver="ShowTip(event, 'tt27', 'link33')" onMouseOut="HideTip('tt27')">mxConstants.DEFAULT_VALID_COLOR</a>.</p></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.Functions"></a>Functions</h3></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.isEnabled"></a>isEnabled</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.isEnabled = function()</td></tr></table></blockquote><p>Returns true if events are handled.&nbsp; This implementation returns <a href="#mxConstraintHandler.enabled" class=LVariable id=link34 onMouseOver="ShowTip(event, 'tt6', 'link34')" onMouseOut="HideTip('tt6')">enabled</a>.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.setEnabled"></a>setEnabled</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>mxConstraintHandler.prototype.setEnabled = function(</td><td class="PParameter prettyprint " nowrap>enabled</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Enables or disables event handling.&nbsp; This implementation updates <a href="#mxConstraintHandler.enabled" class=LVariable id=link35 onMouseOver="ShowTip(event, 'tt6', 'link35')" onMouseOut="HideTip('tt6')">enabled</a>.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>enabled</td><td class=CDLDescription>Boolean that specifies the new enabled state.</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.reset"></a>reset</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.reset = function()</td></tr></table></blockquote><p>Resets the state of this handler.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.getTolerance"></a>getTolerance</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>mxConstraintHandler.prototype.getTolerance = function(</td><td class="PParameter prettyprint " nowrap>me</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Returns the tolerance to be used for intersecting connection points.&nbsp; This implementation returns <a href="../view/mxGraph-js.html#mxGraph.tolerance" class=LVariable id=link36 onMouseOver="ShowTip(event, 'tt28', 'link36')" onMouseOut="HideTip('tt28')">mxGraph.tolerance</a>.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>me</td><td class=CDLDescription><a href="../util/mxMouseEvent-js.html#mxMouseEvent" class=LClass id=link37 onMouseOver="ShowTip(event, 'tt14', 'link37')" onMouseOut="HideTip('tt14')">mxMouseEvent</a> whose tolerance should be returned.</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.getImageForConstraint"></a>getImageForConstraint</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>mxConstraintHandler.prototype.getImageForConstraint = function(</td><td class="PParameter prettyprint " nowrap>state,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>constraint,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>point</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Returns the tolerance to be used for intersecting connection points.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.isEventIgnored"></a>isEventIgnored</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>mxConstraintHandler.prototype.isEventIgnored = function(</td><td class="PParameter prettyprint " nowrap>me,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>source</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Returns true if the given <a href="../util/mxMouseEvent-js.html#mxMouseEvent" class=LClass id=link38 onMouseOver="ShowTip(event, 'tt14', 'link38')" onMouseOut="HideTip('tt14')">mxMouseEvent</a> should be ignored in <a href="#mxConstraintHandler.update" class=LFunction id=link39 onMouseOver="ShowTip(event, 'tt15', 'link39')" onMouseOut="HideTip('tt15')">update</a>.&nbsp; This implementation always returns false.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.isStateIgnored"></a>isStateIgnored</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>mxConstraintHandler.prototype.isStateIgnored = function(</td><td class="PParameter prettyprint " nowrap>state,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>source</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Returns true if the given state should be ignored.&nbsp; This always returns false.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.destroyIcons"></a>destroyIcons</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.destroyIcons = function()</td></tr></table></blockquote><p>Destroys the &lt;focusIcons&gt; if they exist.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.destroyFocusHighlight"></a>destroyFocusHighlight</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.destroyFocusHighlight = function()</td></tr></table></blockquote><p>Destroys the &lt;focusHighlight&gt; if one exists.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.isKeepFocusEvent"></a>isKeepFocusEvent</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>mxConstraintHandler.prototype.isKeepFocusEvent = function(</td><td class="PParameter prettyprint " nowrap>me</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Returns true if the current focused state should not be changed for the given event.&nbsp; This returns true if shift and alt are pressed.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.getCellForEvent"></a>getCellForEvent</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>mxConstraintHandler.prototype.getCellForEvent = function(</td><td class="PParameter prettyprint " nowrap>me,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>point</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Returns the cell for the given event.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.update"></a>update</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>mxConstraintHandler.prototype.update = function(</td><td class="PParameter prettyprint " nowrap>me,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>source,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>existingEdge,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>point</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Updates the state of this handler based on the given <a href="../util/mxMouseEvent-js.html#mxMouseEvent" class=LClass id=link40 onMouseOver="ShowTip(event, 'tt14', 'link40')" onMouseOut="HideTip('tt14')">mxMouseEvent</a>.&nbsp; Source is a boolean indicating if the cell is a source or target.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.redraw"></a>redraw</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.redraw = function()</td></tr></table></blockquote><p>Transfers the focus to the given state as a source or target terminal.&nbsp; If the handler is not enabled then the outline is painted, but the constraints are ignored.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.setFocus"></a>setFocus</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>mxConstraintHandler.prototype.setFocus = function(</td><td class="PParameter prettyprint " nowrap>me,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>state,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>source</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Transfers the focus to the given state as a source or target terminal.&nbsp; If the handler is not enabled then the outline is painted, but the constraints are ignored.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.createHighlightShape"></a>createHighlightShape</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.createHighlightShape = function()</td></tr></table></blockquote><p>Create the shape used to paint the highlight.</p><p>Returns true if the given icon intersects the given point.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.intersects"></a>intersects</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>mxConstraintHandler.prototype.intersects = function(</td><td class="PParameter prettyprint " nowrap>icon,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>mouse,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>source,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>existingEdge</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Returns true if the given icon intersects the given rectangle.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="mxConstraintHandler.destroy"></a>destroy</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.destroy = function()</td></tr></table></blockquote><p>Destroy this handler.</p></div></div></div>
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<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>function mxConstraintHandler(</td><td class="PParameter prettyprint " nowrap>graph</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Constructs an new constraint handler.</div></div><div class=CToolTip id="tt2"><div class=CVariable><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.pointImage</td></tr></table></blockquote>mxImage to be used as the image for fixed connection points.</div></div><div class=CToolTip id="tt3"><div class=CClass>Encapsulates the URL, width and height of an image.</div></div><div class=CToolTip id="tt4"><div class=CVariable><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.graph</td></tr></table></blockquote>Reference to the enclosing mxGraph.</div></div><div class=CToolTip id="tt5"><div class=CClass>Extends mxEventSource to implement a graph component for the browser. </div></div><div class=CToolTip id="tt6"><div class=CVariable><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.enabled</td></tr></table></blockquote>Specifies if events are handled. </div></div><div class=CToolTip id="tt7"><div class=CVariable><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.highlightColor</td></tr></table></blockquote>Specifies the color for the highlight. </div></div><div class=CToolTip id="tt8"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.isEnabled = function()</td></tr></table></blockquote>Returns true if events are handled. </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>mxConstraintHandler.prototype.setEnabled = function(</td><td class="PParameter prettyprint " nowrap>enabled</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Enables or disables event handling. </div></div><div class=CToolTip id="tt10"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.reset = function()</td></tr></table></blockquote>Resets the state of this handler.</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>mxConstraintHandler.prototype.getTolerance = function(</td><td class="PParameter prettyprint " nowrap>me</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Returns the tolerance to be used for intersecting connection points. </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>mxConstraintHandler.prototype.getImageForConstraint = function(</td><td class="PParameter prettyprint " nowrap>state,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>constraint,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>point</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Returns the tolerance to be used for intersecting connection points.</div></div><div class=CToolTip id="tt13"><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>mxConstraintHandler.prototype.isEventIgnored = function(</td><td class="PParameter prettyprint " nowrap>me,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>source</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Returns true if the given mxMouseEvent should be ignored in update. </div></div><div class=CToolTip id="tt14"><div class=CClass>Base class for all mouse events in mxGraph. </div></div><div class=CToolTip id="tt15"><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>mxConstraintHandler.prototype.update = function(</td><td class="PParameter prettyprint " nowrap>me,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>source,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>existingEdge,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>point</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Updates the state of this handler based on the given mxMouseEvent. </div></div><div class=CToolTip id="tt16"><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>mxConstraintHandler.prototype.isStateIgnored = function(</td><td class="PParameter prettyprint " nowrap>state,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>source</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Returns true if the given state should be ignored. </div></div><div class=CToolTip id="tt17"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.destroyIcons = function()</td></tr></table></blockquote>Destroys the focusIcons if they exist.</div></div><div class=CToolTip id="tt18"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.destroyFocusHighlight = function()</td></tr></table></blockquote>Destroys the focusHighlight if one exists.</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>mxConstraintHandler.prototype.isKeepFocusEvent = function(</td><td class="PParameter prettyprint " nowrap>me</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Returns true if the current focused state should not be changed for the given event. </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>mxConstraintHandler.prototype.getCellForEvent = function(</td><td class="PParameter prettyprint " nowrap>me,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>point</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Returns the cell for the given event.</div></div><div class=CToolTip id="tt21"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.redraw = function()</td></tr></table></blockquote>Transfers the focus to the given state as a source or target terminal. </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>mxConstraintHandler.prototype.setFocus = function(</td><td class="PParameter prettyprint " nowrap>me,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>state,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>source</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Transfers the focus to the given state as a source or target terminal. </div></div><div class=CToolTip id="tt23"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.createHighlightShape = function()</td></tr></table></blockquote>Create the shape used to paint the highlight.</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>mxConstraintHandler.prototype.intersects = function(</td><td class="PParameter prettyprint " nowrap>icon,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>mouse,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>source,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>existingEdge</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Returns true if the given icon intersects the given rectangle.</div></div><div class=CToolTip id="tt25"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxConstraintHandler.prototype.destroy = function()</td></tr></table></blockquote>Destroy this handler.</div></div><div class=CToolTip id="tt26"><div class=CClass>Cells are the elements of the graph model. </div></div><div class=CToolTip id="tt27"><div class=CVariable><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">DEFAULT_VALID_COLOR: '#00FF00'</td></tr></table></blockquote>Specifies the default valid color. </div></div><div class=CToolTip id="tt28"><div class=CVariable><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxGraph.prototype.tolerance</td></tr></table></blockquote>Tolerance for a move to be handled as a single click. </div></div><!--END_ND_TOOLTIPS-->
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