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# Copyright (c) 2004 by Intevation GmbH |
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# Authors: |
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# Martin Schulze <[email protected]> |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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|
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""" |
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Convenience routines for handling of Document Object Model (DOM) |
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nodes. |
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|
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For more information on DOM see <http://www.zytrax.com/tech/dom/guide.html>. |
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|
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""" |
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|
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def listChildNodes (node): |
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""" |
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Prints a list of all child DOM nodes for the given node. This |
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function is normally only used for inspection of a DOM tree during |
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development. |
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""" |
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print "Node %s has %d children" % (node.nodeName, node.childNodes.length) |
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for i in range (node.childNodes.length): |
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print " %d: %s" % (i, node.childNodes[i].nodeName) |
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|
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|
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def listAttributes (node): |
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""" |
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Prints a list of all DOM attributes for the given node. This |
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function is normally only used for inspection of a DOM tree during |
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development. |
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""" |
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print "Node %s has %d attributes" % (node.nodeName, node.attributes.length) |
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for key in node.attributes.keys(): |
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print " %s=%s" % (key, node.attributes.get(key).nodeValue) |
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|
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|
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# Can't use node.getElementsByTagName(name) since it traverses the XML |
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# data recursively and we need hierarchy information as well in order |
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# to get inheritance of attributes implemented properly. |
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# |
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def getElementsByName (node, name): |
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""" |
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Returns a list of child DOM nodes whose nodeName matches given |
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string. |
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""" |
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res = [] |
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for i in range (node.childNodes.length): |
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if node.childNodes[i].nodeName == name: |
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res.append(node.childNodes[i]) |
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return res |
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|
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|
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def getElementByName (node, name): |
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""" |
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Returns the first child DOM node whose nodeName matches given |
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string. |
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""" |
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try: |
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return getElementsByName (node, name)[0] |
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except IndexError: |
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return None |
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