Mon 21 Jul 22:43:21 CEST 2025

js/ui/mxgraph/src/js/io/mxDefaultKeyHandlerCodec.js

@@ -0,0 +1,88 @@
+/**
+ * Copyright (c) 2006-2015, JGraph Ltd
+ * Copyright (c) 2006-2015, Gaudenz Alder
+ */
+mxCodecRegistry.register(function()
+{
+	/**
+	 * Class: mxDefaultKeyHandlerCodec
+	 *
+	 * Custom codec for configuring <mxDefaultKeyHandler>s. This class is created
+	 * and registered dynamically at load time and used implicitely via
+	 * <mxCodec> and the <mxCodecRegistry>. This codec only reads configuration
+	 * data for existing key handlers, it does not encode or create key handlers.
+	 */
+	var codec = new mxObjectCodec(new mxDefaultKeyHandler());
+
+	/**
+	 * Function: encode
+	 *
+	 * Returns null.
+	 */
+	codec.encode = function(enc, obj)
+	{
+		return null;
+	};
+	
+	/**
+	 * Function: decode
+	 *
+	 * Reads a sequence of the following child nodes
+	 * and attributes:
+	 *
+	 * Child Nodes:
+	 *
+	 * add - Binds a keystroke to an actionname.
+	 *
+	 * Attributes:
+	 *
+	 * as - Keycode.
+	 * action - Actionname to execute in editor.
+	 * control - Optional boolean indicating if
+	 * 		the control key must be pressed.
+	 *
+	 * Example:
+	 *
+	 * (code)
+	 * <mxDefaultKeyHandler as="keyHandler">
+	 *   <add as="88" control="true" action="cut"/>
+	 *   <add as="67" control="true" action="copy"/>
+	 *   <add as="86" control="true" action="paste"/>
+	 * </mxDefaultKeyHandler>
+	 * (end)
+	 *
+	 * The keycodes are for the x, c and v keys.
+	 *
+	 * See also: <mxDefaultKeyHandler.bindAction>,
+	 * http://www.js-examples.com/page/tutorials__key_codes.html
+	 */
+	codec.decode = function(dec, node, into)
+	{
+		if (into != null)
+		{
+			var editor = into.editor;
+			node = node.firstChild;
+			
+			while (node != null)
+			{
+				if (!this.processInclude(dec, node, into) &&
+					node.nodeName == 'add')
+				{
+					var as = node.getAttribute('as');
+					var action = node.getAttribute('action');
+					var control = node.getAttribute('control');
+					
+					into.bindAction(as, action, control);
+				}
+				
+				node = node.nextSibling;
+			}
+		}
+		
+		return into;
+	};
+
+	// Returns the codec into the registry
+	return codec;
+
+}());