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Adding a removeAllFeatures method to the vector layer. This bypasses a few unnecessary steps when removing all features but retains the same behavior as the removeFeatures method otherwise. Optimizing the clear method on elements renderers a bit by avoiding length calculation of the live collection and looking up the first child once per node removal. r=ahocevar (closes #2774)

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@10597 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Tim Schaub
2010-08-05 15:46:23 +00:00
parent e0c3db1227
commit 33410b0e76
2 changed files with 56 additions and 7 deletions
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15
lib/OpenLayers/Renderer/Elements.js
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@@ -442,14 +442,17 @@ OpenLayers.Renderer.Elements = OpenLayers.Class(OpenLayers.Renderer, {
* Remove all the elements from the root
*/
clear: function() {
if (this.vectorRoot) {
while (this.vectorRoot.childNodes.length > 0) {
this.vectorRoot.removeChild(this.vectorRoot.firstChild);
var child;
var root = this.vectorRoot;
if (root) {
while (child = root.firstChild) {
root.removeChild(child);
}
}
if (this.textRoot) {
while (this.textRoot.childNodes.length > 0) {
this.textRoot.removeChild(this.textRoot.firstChild);
root = this.textRoot;
if (root) {
while (child = root.firstChild) {
root.removeChild(child);
}
}
if (this.indexer) {