<!DOCTYPE html> <html> <head> <title>OpenLayers Undo/Redo Drawing Methods</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0"> <meta name="apple-mobile-web-app-capable" content="yes"> <link rel="stylesheet" href="../theme/default/style.css" type="text/css"> <link rel="stylesheet" href="style.css" type="text/css"> <script src="../lib/OpenLayers.js"></script> </head> <body> <h1 id="title">Undo/Redo Drawing</h1> <p id="shortdesc"> Demonstrates the use of undo & redo methods while drawing. </p> <div id="map" class="smallmap"></div> <div id="docs"> <p> Use <code>Ctrl-Z</code> or <code>⌘-Z</code> to undo while drawing. Use <code>Ctrl-Y</code> or <code>⌘-Y</code> to redo what you have undone. Use <code>Esc</code> to cancel the current sketch. <p> The <code>control.undo</code> method works on the current sketch, removing the most recently added point. The <code>control.redo</code> method adds back items that were removed from an undo. To fully erase a sketch, call the <code>control.cancel</code> method. </p><p> View the <a href="draw-undo-redo.js" target="_blank">draw-undo-redo.js</a> source to see how this is done. </p> </div> <script src="draw-undo-redo.js"></script> </body> </html>