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<div class="moz-cite-prefix">Hi Rob,<br>
<br>
I look and haven't found what's causing the issue, but here's
some updates anyway:<br>
<br>
You shouldn't set the standalone property after the
instantiation of the modify control. If you look at the code,
that property is used in the initialize function.<br>
<br>
I noticed that the DragControl already has a 'click' callback
method, so the way I suggested currently overrides it completely.
Making the following change makes the chain continue: <br>
<br>
click: function(feature) {<br>
this.layer.events.triggerEvent(<br>
"vertexclicked", {feature: feature}<br>
)<br>
// call the dragControl original click callback method<br>
control.dragControl.clickFeature.apply(<br>
control.dragControl, [feature]);<br>
}<br>
<br>
Even with the above fix, I notice that the callback method is
never triggered. The feature handler is still active though. I
don't know what's wrong. This may be an issue in OpenLayers.<br>
<br>
Regards,<br>
<br>
Alexandre<br>
<br>
<br>
On 13-03-01 07:26 AM, Robert Smart wrote:<br>
</div>
<blockquote cite="mid:SNT127-DS4C47F15459E2401D21E80AAFF0@phx.gbl"
type="cite">
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<div style="FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE:
12pt">
<div>Hi,</div>
<div> </div>
<div>I’ve made a start on modifying the code so it does what i
need. However I need it work in standalone mode, and it
seems to exhibit some odd behaviour.</div>
<div> </div>
<div>If I start editing and selecting points it all works
fine, but if I click outside of the polygon (it remains
editable since it is in standalone mode)when I go back to
the polygon the click event no longer fires, so I can no
longer select a vertex. </div>
<div> </div>
<div>Any ideas what might be causing this?</div>
<div> </div>
<div>I’ve pasted the page code below. I have not changed the
modifyFeatureVertexSelection code at all except putting it
in a seperate js file.</div>
<div> </div>
<div>Thanks,</div>
<div> </div>
<div>Rob Smart</div>
<div> </div>
<div><div id="map" style="width:500px; height:500px; "
></div></div>
<div> <input id="Button4" type="button" value="Delete
Selected Vertex" onclick="deleteSelectedVertex()" /></div>
<div> </div>
<div> <script type="text/javascript"></div>
<div> </div>
<div> var map, vectors, modify, feature, selectedVertex;</div>
<div> </div>
<div> $(document).ready(function () {</div>
<div> </div>
<div> map = new OpenLayers.Map('map');</div>
<div> var wms = new OpenLayers.Layer.WMS("OpenLayers
WMS",</div>
<div> "<a moz-do-not-send="true"
href="http://vmap0.tiles.osgeo.org/wms/vmap0?%22">http://vmap0.tiles.osgeo.org/wms/vmap0?"</a>,
{ layers: 'basic' });</div>
<div>
OpenLayers.Feature.Vector.style['default']['strokeWidth'] =
'2';</div>
<div> </div>
<div> // allow testing of specific renderers via
"?renderer=Canvas", etc</div>
<div> var renderer =
OpenLayers.Util.getParameters(window.location.href).renderer;</div>
<div> renderer = (renderer) ? [renderer] :
OpenLayers.Layer.Vector.prototype.renderers;</div>
<div> </div>
<div> var style = $.extend(true, {},
OpenLayers.Feature.Vector.style['default']); // get a copy
of the default style</div>
<div> style.fillColor = "Red";</div>
<div> style.fillOpacity = 1;</div>
<div> </div>
<div> var myStyleMap = new OpenLayers.StyleMap({</div>
<div> "temporary": new OpenLayers.Style(style)</div>
<div> });</div>
<div> </div>
<div> vectors = new OpenLayers.Layer.Vector("Vector
Layer", {</div>
<div> renderers: renderer, styleMap: myStyleMap</div>
<div> });</div>
<div> </div>
<div> map.addLayers([wms, vectors]);</div>
<div> </div>
<div> </div>
<div> feature = new OpenLayers.Feature.Vector(</div>
<div> OpenLayers.Geometry.Polygon.createRegularPolygon(</div>
<div> new OpenLayers.Geometry.Point(0, 0),</div>
<div> 10,</div>
<div> 5</div>
<div> ),</div>
<div> {}</div>
<div> );</div>
<div> vectors.addFeatures([feature]);</div>
<div> </div>
<div> if (console && console.log) {</div>
<div> // register a callback function to our new
"vertexclicked" event</div>
<div> vectors.events.on({ "vertexclicked": function
report(event) {</div>
<div> console.log(event.type, event.feature.id);</div>
<div> </div>
<div> myVertices =
feature.geometry.getVertices();</div>
<div> realVertex = false;</div>
<div> </div>
<div> //TEST TO SEE IF ITS A REAL VERTEX</div>
<div> for (var i = 0; i < myVertices.length;
i++) {</div>
<div> //console.log(myVertices[i]);</div>
<div> </div>
<div> if (myVertices[i] ==
event.feature.geometry) { realVertex = true; }</div>
<div> //Do something</div>
<div> }</div>
<div> </div>
<div> if (realVertex == false) {
console.log("virtualVertex"); return; }</div>
<div> </div>
<div> console.log(event.feature)</div>
<div> </div>
<div> </div>
<div> if (selectedVertex == null) {</div>
<div> selectedVertex = event.feature;</div>
<div> vectors.drawFeature(event.feature,
"temporary");</div>
<div> return;</div>
<div> }</div>
<div> </div>
<div> if (event.feature == selectedVertex) {</div>
<div> vectors.drawFeature(event.feature,
"default");</div>
<div> selectedVertex = null;</div>
<div> return;</div>
<div> }</div>
<div> </div>
<div> if (event.feature != selectedVertex) {</div>
<div> vectors.drawFeature(selectedVertex,
"default");</div>
<div> selectedVertex = event.feature;</div>
<div> vectors.drawFeature(event.feature,
"temporary");</div>
<div> }</div>
<div> </div>
<div> // change the color - sure !</div>
<div> </div>
<div> </div>
<div> // // do more - popup to
delete the vertex</div>
<div> // c = [];</div>
<div> // c.push("Selected feature
id: ");</div>
<div> //
c.push(vectors.selectedFeatures[0].id);</div>
<div> // c.push("\nSelected
vertex id: ");</div>
<div> //
c.push(event.feature.id);</div>
<div> // c.push("\n\nRemove this
vertex?")</div>
<div> // var removeVertex =
confirm(c.join(""));</div>
<div> </div>
<div> // if (removeVertex) {</div>
<div> // // I noticed that
the ModifyFeature control doesn't have</div>
<div> // // a method to
manage a vertices removal, it's only done inside</div>
<div> // // the
'handleKeypress' callback method... but it doesn't</div>
<div> // // prevent us from
using it :) so we'll emulate a 'delete' key</div>
<div> // // pressed</div>
<div> //
modify.dragControl.feature = event.feature;</div>
<div> //
modify.handleKeypress({ keyCode: 46 });</div>
<div> // } else {</div>
<div> // // simply redraw the
vertex back to its default style</div>
<div> //
vectors.drawFeature(event.feature, "default");</div>
<div> // }</div>
<div> }</div>
<div> });</div>
<div> }</div>
<div> </div>
<div> modify = new
OpenLayers.Control.ModifyFeatureVertexClick(vectors);</div>
<div> modify.standalone = true;</div>
<div> map.addControls([modify]);</div>
<div> modify.activate();</div>
<div> </div>
<div> map.setCenter(new OpenLayers.LonLat(0, 0), 3);</div>
<div> </div>
<div> // select with a delay to let the map render and
apply the default style</div>
<div> // to the feature, which emulates a selection that
would be made using a</div>
<div> // click on the feature</div>
<div> setTimeout(function () {</div>
<div> modify.selectControl.select(feature);</div>
<div> });</div>
<div> </div>
<div> });</div>
<div> </div>
<div> function deleteSelectedVertex() {</div>
<div> </div>
<div> if (selectedVertex != null) { </div>
<div> modify.dragControl.feature = selectedVertex;</div>
<div> modify.handleKeypress({ keyCode: 46 });</div>
<div> //This works for some of the issues but not all of
the them</div>
<div> //vectors.destroyFeatures([selectedVertex])</div>
<div> modify.dragControl.feature = null;</div>
<div> selectedVertex = null;</div>
<div> modify.selectControl.select(feature);</div>
<div> </div>
<div> }</div>
<div> </div>
<div> }</div>
<div> </div>
<div> </script></div>
<div style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY:
'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT:
normal; TEXT-DECORATION: none">
<div style="FONT: 10pt tahoma">
<div> </div>
<div style="BACKGROUND: #f5f5f5">
<div style="font-color: black"><b>From:</b> <a
moz-do-not-send="true" title="adube@mapgears.com"
href="mailto:adube@mapgears.com">Alexandre Dubé</a>
</div>
<div><b>Sent:</b> Thursday, February 28, 2013 7:05 PM</div>
<div><b>To:</b> <a moz-do-not-send="true"
title="r_n_smart@hotmail.com"
href="mailto:r_n_smart@hotmail.com">Robert Smart</a>
</div>
<div><b>Cc:</b> <a moz-do-not-send="true"
title="openlayers-users@lists.osgeo.org"
href="mailto:openlayers-users@lists.osgeo.org">openlayers-users@lists.osgeo.org</a>
</div>
<div><b>Subject:</b> Re: [OpenLayers-Users]
ModifyControl Select/Delete Vertex?</div>
</div>
</div>
<div> </div>
</div>
<div style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY:
'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT:
normal; TEXT-DECORATION: none">
<div class="moz-cite-prefix">Hi Robert,<br>
<br>
Yep, all the things you ask are quite possible but not
without getting your hand a bit dirty :) You can do all
that by programming. Extend the ModifyControl more to
make it do what you want. Don't be afraid to look at the
source code to see what the components do. You'll get
more knowledge that way.<br>
<br>
I'd be happy to see the end result. Best of luck to
you.<br>
<br>
Kind regards,<br>
<br>
Alexandre<br>
<br>
<br>
<br>
On 13-02-28 12:36 PM, Robert Smart wrote:<br>
</div>
<br>
<blockquote
cite="mid:SNT127-DS14390D2D2EFF542465EF14AAFE0@phx.gbl"
type="cite">
<div dir="ltr">
<div style="FONT-FAMILY: 'Calibri'; COLOR: #000000;
FONT-SIZE: 12pt">
<div>This there a way to define a style for the
selected vertex? </div>
</div>
</div>
</blockquote>
<br>
Sure. Look at the OpenLayers.Layer.Feature drawFeature
method, second argument.<br>
<br>
<br>
<blockquote
cite="mid:SNT127-DS14390D2D2EFF542465EF14AAFE0@phx.gbl"
type="cite">
<div dir="ltr">
<div style="FONT-FAMILY: 'Calibri'; COLOR: #000000;
FONT-SIZE: 12pt">
<div> </div>
<div>Is there a way to store a reference to the
selected vertex in the modify feature control? So
that I could allow a user to select a vertex and
then if they choose to delete it, I can just pull
out a reference to it in the code from the modify
feature. I suppose this could also just be a
deleteSeletectedVertex function on the modifyFeature
control too.</div>
</div>
</div>
</blockquote>
<br>
Yep, but you'll need to program that.<br>
<br>
<br>
<blockquote
cite="mid:SNT127-DS14390D2D2EFF542465EF14AAFE0@phx.gbl"
type="cite">
<div dir="ltr">
<div style="FONT-FAMILY: 'Calibri'; COLOR: #000000;
FONT-SIZE: 12pt">
<div> </div>
<div>Is there a way to deselect the the vertex too? So
if I click on it and it changes its style to the
‘selected’ style, I can then click on it again to
deselect it?</div>
</div>
</div>
</blockquote>
<br>
If you keep track of the current one selected, yeah you
could. This is also done programmatically.<br>
<br>
<br>
<br>
<pre class="moz-signature" cols="72">--
Alexandre Dubé
Mapgears
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="http://www.mapgears.com">www.mapgears.com</a>
</pre>
</div>
</div>
</div>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Alexandre Dubé
Mapgears
<a class="moz-txt-link-abbreviated" href="http://www.mapgears.com">www.mapgears.com</a>
</pre>
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