mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-11-09 11:29:58 +00:00
627 lines
16 KiB
JavaScript
Executable File
627 lines
16 KiB
JavaScript
Executable File
/*
|
|
javascript-xpath, an implementation of DOM Level 3 XPath for Internet Explorer 5+
|
|
Copyright (C) 2004 Dimitri Glazkov Modified 2006 Mehdi Hassan
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; if not, write to the Free Software
|
|
|
|
*/
|
|
|
|
// Mozilla, Firefox, Safari etc have support by default, we don't have an implementation for the rest
|
|
if (!(XPathResult.NUMBER_TYPE + XPathResult.NUMBER_TYPE))
|
|
{
|
|
window._content = window;
|
|
|
|
var _tb_windowEvents = new Array();
|
|
|
|
window.addEventListener = function(event, handler, flag) {
|
|
_tb_windowEvents[event] = handler;
|
|
};
|
|
|
|
function _tb_postProcess() {
|
|
if (_tb_windowEvents["load"]) {
|
|
_tb_windowEvents["load"]();
|
|
}
|
|
}
|
|
|
|
var extern;
|
|
if (window.dialogArguments && window.dialogArguments.external) {
|
|
extern = window.dialogArguments.external;
|
|
} else if (window.external) {
|
|
extern = window.external;
|
|
}
|
|
|
|
// XPathException
|
|
// An Error object will be thrown, this is just a handler to instantiate that object
|
|
var XPathException = new _XPathExceptionHandler();
|
|
function _XPathExceptionHandler()
|
|
{
|
|
this.INVALID_EXPRESSION_ERR = 51;
|
|
this.TYPE_ERR = 52;
|
|
this.NOT_IMPLEMENTED_ERR = -1;
|
|
this.RUNTIME_ERR = -2;
|
|
|
|
this.ThrowNotImplemented = function(message)
|
|
{
|
|
ThrowError(this.NOT_IMPLEMENTED_ERR, "This functionality is not implemented.", message);
|
|
};
|
|
|
|
this.ThrowInvalidExpression = function(message)
|
|
{
|
|
ThrowError(this.INVALID_EXPRESSION_ERR, "Invalid expression", message);
|
|
};
|
|
|
|
this.ThrowType = function(message)
|
|
{
|
|
ThrowError(this.TYPE_ERR, "Type error", message);
|
|
};
|
|
|
|
this.Throw = function(message)
|
|
{
|
|
ThrowError(this.RUNTIME_ERR, "Run-time error", message);
|
|
};
|
|
|
|
function ThrowError(code, description, message)
|
|
{
|
|
var error = new Error(code, "DOM-L3-XPath : " + description + (message ? ", \"" + message + "\"": ""));
|
|
error.code = code;
|
|
error.name = "XPathException";
|
|
throw error;
|
|
}
|
|
}
|
|
|
|
// DOMException
|
|
// An Error object will be thrown, this is just a handler to instantiate that object
|
|
var DOMException = new _DOMExceptionHandler();
|
|
function _DOMExceptionHandler()
|
|
{
|
|
this.ThrowInvalidState = function(message)
|
|
{
|
|
ThrowError(13, "The state of the object is no longer valid", message);
|
|
};
|
|
|
|
function ThrowError(code, description, message)
|
|
{
|
|
var error = new Error(code, "DOM : " + description + (message ? ", \"" + message + "\"": ""));
|
|
error.code = code;
|
|
error.name = "DOMException";
|
|
throw error;
|
|
}
|
|
}
|
|
|
|
// XPathEvaluator
|
|
// implemented as document object methods
|
|
|
|
// XPathExpression createExpression(String expression, XPathNSResolver resolver)
|
|
document.createExpression = function
|
|
(
|
|
expression, // String
|
|
resolver // XPathNSResolver
|
|
)
|
|
{
|
|
// returns XPathExpression object
|
|
return new XPathExpression(expression, resolver);
|
|
};
|
|
|
|
// XPathNSResolver createNSResolver(nodeResolver)
|
|
document.createNSResolver = function
|
|
(
|
|
nodeResolver // Node
|
|
)
|
|
{
|
|
// returns XPathNSResolver
|
|
return new XPathNSResolver(nodeResolver);
|
|
};
|
|
|
|
// XPathResult evaluate(String expresison, Node contextNode, XPathNSResolver resolver, Number type, XPathResult result)
|
|
document.evaluate = function
|
|
(
|
|
expression, // String
|
|
contextNode, // Node
|
|
resolver, // XPathNSResolver
|
|
type, // Number
|
|
result // XPathResult
|
|
)
|
|
// can raise XPathException, DOMException
|
|
{
|
|
// return XPathResult
|
|
return document.createExpression(expression, resolver).evaluate(contextNode, type, result);
|
|
};
|
|
|
|
// XPathExpression
|
|
function XPathExpression
|
|
(
|
|
expression, // String
|
|
resolver // XPathNSResolver
|
|
)
|
|
{
|
|
this.expressionString = expression;
|
|
this.resolver = resolver;
|
|
|
|
// XPathResult evaluate(Node contextNode, Number type, XPathResult result)
|
|
this.evaluate = function
|
|
(
|
|
contextNode, // Node
|
|
type, // Number
|
|
result // XPathResult
|
|
)
|
|
// raises XPathException, DOMException
|
|
{
|
|
// return XPathResult
|
|
return (result && result.constructor == XPathResult ? result.initialize(this, contextNode, resolver, type) : new XPathResult(this, contextNode, resolver, type));
|
|
};
|
|
|
|
this.toString = function()
|
|
{
|
|
return "[XPathExpression]";
|
|
};
|
|
}
|
|
|
|
// XPathNSResolver
|
|
function XPathNSResolver(node)
|
|
{
|
|
this.node = node;
|
|
|
|
// String lookupNamespaceURI(String prefix)
|
|
this.lookupNamespaceURI = function
|
|
(
|
|
prefix // String
|
|
)
|
|
{
|
|
XPathException.ThrowNotImplemented();
|
|
// return String
|
|
return null;
|
|
};
|
|
|
|
this.toString = function()
|
|
{
|
|
return "[XPathNSResolver]";
|
|
};
|
|
}
|
|
|
|
// XPathResult
|
|
XPathResult.ANY_TYPE = 0;
|
|
XPathResult.NUMBER_TYPE = 1;
|
|
XPathResult.STRING_TYPE = 2;
|
|
XPathResult.BOOLEAN_TYPE = 3;
|
|
XPathResult.UNORDERED_NODE_ITERATOR_TYPE = 4;
|
|
XPathResult.ORDERED_NODE_ITERATOR_TYPE = 5;
|
|
XPathResult.UNORDERED_SNAPSHOT_TYPE = 6;
|
|
XPathResult.ORDERED_SNAPSHOT_TYPE = 7;
|
|
XPathResult.ANY_UNORDERED_NODE_TYPE = 8;
|
|
XPathResult.FIRST_ORDERED_NODE_TYPE = 9;
|
|
|
|
function XPathResult
|
|
(
|
|
expression, // XPathExpression
|
|
contextNode, // Node
|
|
resolver, // XPathNSResolver
|
|
type // Number
|
|
)
|
|
{
|
|
this.initialize = function(expression, contextNode, resolver, type)
|
|
{
|
|
this._domResult = null;
|
|
this._expression = expression;
|
|
this._contextNode = contextNode;
|
|
this._resolver = resolver;
|
|
if (type)
|
|
{
|
|
this.resultType = type;
|
|
this._isIterator = (type == XPathResult.UNORDERED_NODE_ITERATOR_TYPE ||
|
|
type == XPathResult.ORDERED_NODE_ITERATOR_TYPE ||
|
|
type == XPathResult.ANY_TYPE);
|
|
this._isSnapshot = (type == XPathResult.UNORDERED_SNAPSHOT_TYPE || type == XPathResult.ORDERED_SNAPSHOT_TYPE);
|
|
this._isNodeSet = type > XPathResult.BOOLEAN_TYPE;
|
|
}
|
|
else
|
|
{
|
|
this.resultType = XPathResult.ANY_TYPE;
|
|
this._isIterator = true;
|
|
this._isSnapshot = false;
|
|
this._isNodeSet = true;
|
|
}
|
|
return this;
|
|
};
|
|
|
|
this.initialize(expression, contextNode, resolver, type);
|
|
|
|
this.getInvalidIteratorState = function()
|
|
{
|
|
return documentChangeDetected() || !this._isIterator;
|
|
};
|
|
|
|
this.getSnapshotLength = function()
|
|
// raises XPathException
|
|
{
|
|
if (!this._isSnapshot)
|
|
{
|
|
XPathException.ThrowType("Snapshot is not an expected result type");
|
|
}
|
|
activateResult(this);
|
|
// return Number
|
|
return this._domResult.length;
|
|
};
|
|
|
|
// Node iterateNext()
|
|
this.iterateNext = function()
|
|
// raises XPathException, DOMException
|
|
{
|
|
if (!this._isIterator)
|
|
{
|
|
XPathException.ThrowType("Iterator is not an expected result type");
|
|
}
|
|
activateResult(this);
|
|
if (documentChangeDetected())
|
|
{
|
|
DOMException.ThrowInvalidState("iterateNext");
|
|
}
|
|
// return Node
|
|
return getNextNode(this);
|
|
};
|
|
|
|
// Node snapshotItem(Number index)
|
|
this.snapshotItem = function(index)
|
|
// raises XPathException
|
|
{
|
|
if (!this._isSnapshot)
|
|
{
|
|
XPathException.ThrowType("Snapshot is not an expected result type");
|
|
}
|
|
// return Node
|
|
return getItemNode(this, index);
|
|
};
|
|
|
|
this.toString = function()
|
|
{
|
|
return "[XPathResult]";
|
|
};
|
|
|
|
// returns string value of the result, if result type is STRING_TYPE
|
|
// otherwise throws an XPathException
|
|
this.getStringValue = function()
|
|
{
|
|
if (this.resultType != XPathResult.STRING_TYPE)
|
|
{
|
|
XPathException.ThrowType("The expression can not be converted to return String");
|
|
}
|
|
return getNodeText(this);
|
|
};
|
|
|
|
// returns number value of the result, if the result is NUMBER_TYPE
|
|
// otherwise throws an XPathException
|
|
this.getNumberValue = function()
|
|
{
|
|
if (this.resultType != XPathResult.NUMBER_TYPE)
|
|
{
|
|
XPathException.ThrowType("The expression can not be converted to return Number");
|
|
}
|
|
var number = parseInt(getNodeText(this));
|
|
if (isNaN(number))
|
|
{
|
|
XPathException.ThrowType("The result can not be converted to Number");
|
|
}
|
|
return number;
|
|
};
|
|
|
|
// returns boolean value of the result, if the result is BOOLEAN_TYPE
|
|
// otherwise throws an XPathException
|
|
this.getBooleanValue = function()
|
|
{
|
|
if (this.resultType != XPathResult.BOOLEAN_TYPE)
|
|
{
|
|
XPathException.ThrowType("The expression can not be converted to return Boolean");
|
|
}
|
|
|
|
var
|
|
text = getNodeText(this);
|
|
bool = (text ? text.toLowerCase() : null);
|
|
if (bool == "false" || bool == "true")
|
|
{
|
|
return bool;
|
|
}
|
|
XPathException.ThrowType("The result can not be converted to Boolean");
|
|
};
|
|
|
|
// returns single node, if the result is ANY_UNORDERED_NODE_TYPE or FIRST_ORDERED_NODE_TYPE
|
|
// otherwise throws an XPathException
|
|
this.getSingleNodeValue = function()
|
|
{
|
|
if (this.resultType != XPathResult.ANY_UNORDERED_NODE_TYPE &&
|
|
this.resultType != XPathResult.FIRST_ORDERED_NODE_TYPE)
|
|
{
|
|
XPathException.ThrowType("The expression can not be converted to return single Node value");
|
|
}
|
|
return getSingleNode(this);
|
|
};
|
|
|
|
function documentChangeDetected()
|
|
{
|
|
return document._XPathMsxmlDocumentHelper.documentChangeDetected();
|
|
}
|
|
|
|
function getNodeText(result)
|
|
{
|
|
activateResult(result);
|
|
return result._textResult;
|
|
// return ((node = getSingleNode(result)) ? (node.nodeType == 1 ? node.innerText : node.nodeValue) : null);
|
|
}
|
|
|
|
function findNode(result, current)
|
|
{
|
|
switch(current.nodeType)
|
|
{
|
|
case 1: // NODE_ELEMENT
|
|
var id = current.attributes.getNamedItem("id");
|
|
if (id)
|
|
{
|
|
return document.getElementById(id.value);
|
|
}
|
|
XPathException.Throw("unable to locate element in XML tree");
|
|
case 2: // NODE_ATTRIBUTE
|
|
var id = current.selectSingleNode("..").attributes.getNamedItem("id");
|
|
if (id)
|
|
{
|
|
var node = document.getElementById(id.text);
|
|
if (node)
|
|
{
|
|
return node.attributes.getNamedItem(current.nodeName);
|
|
}
|
|
}
|
|
XPathException.Throw("unable to locate attribute in XML tree");
|
|
case 3: // NODE_TEXT
|
|
var id = current.selectSingleNode("..").attributes.getNamedItem("id");
|
|
if (id)
|
|
{
|
|
var node = document.getElementById(id.value);
|
|
if (node)
|
|
{
|
|
for(child in node.childNodes)
|
|
{
|
|
if (child.nodeType == 3 && child.nodeValue == current.nodeValue)
|
|
{
|
|
return child;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
XPathException.Throw("unable to locate text in XML tree");
|
|
}
|
|
XPathException.Throw("unknown node type");
|
|
}
|
|
|
|
function activateResult(result)
|
|
{
|
|
if (!result._domResult)
|
|
{
|
|
try
|
|
{
|
|
var expression = result._expression.expressionString;
|
|
|
|
// adjust expression if contextNode is not a document
|
|
if (result._contextNode != document && expression.indexOf("//") != 0)
|
|
{
|
|
|
|
expression = "//*[@id = '" + result._contextNode.id + "']" +
|
|
(expression.indexOf("/") == 0 ? "" : "/") + expression;
|
|
}
|
|
|
|
if (result._isNodeSet)
|
|
{
|
|
result._domResult = document._XPathMsxmlDocumentHelper.getDom().selectNodes(expression);
|
|
}
|
|
else
|
|
{
|
|
result._domResult = true;
|
|
result._textResult = document._XPathMsxmlDocumentHelper.getTextResult(expression);
|
|
}
|
|
|
|
}
|
|
catch(error)
|
|
{
|
|
alert(error.description);
|
|
XPathException.ThrowInvalidExpression(error.description);
|
|
}
|
|
}
|
|
}
|
|
|
|
function getSingleNode(result)
|
|
{
|
|
var node = getItemNode(result, 0);
|
|
result._domResult = null;
|
|
return node;
|
|
}
|
|
|
|
function getItemNode(result, index)
|
|
{
|
|
activateResult(result);
|
|
var current = result._domResult.item(index);
|
|
return (current ? findNode(result, current) : null);
|
|
}
|
|
|
|
function getNextNode(result)
|
|
{
|
|
var current = result._domResult.nextNode;
|
|
if (current)
|
|
{
|
|
return findNode(result, current);
|
|
}
|
|
result._domResult = null;
|
|
return null;
|
|
}
|
|
}
|
|
|
|
document.reloadDom = function()
|
|
{
|
|
document._XPathMsxmlDocumentHelper.reset();
|
|
};
|
|
|
|
document._XPathMsxmlDocumentHelper = new _XPathMsxmlDocumentHelper();
|
|
function _XPathMsxmlDocumentHelper()
|
|
{
|
|
this.getDom = function()
|
|
{
|
|
activateDom(this);
|
|
return this.dom;
|
|
};
|
|
|
|
this.getXml = function()
|
|
{
|
|
activateDom(this);
|
|
return this.dom.xml;
|
|
};
|
|
|
|
this.getTextResult = function(expression)
|
|
{
|
|
expression = expression.replace(/</g, "<").replace(/>/g, ">").replace(/"/g, "\"");
|
|
var xslText = "<xsl:stylesheet version=\"1.0\" xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\">" +
|
|
"<xsl:output method=\"text\"/><xsl:template match=\"*\"><xsl:value-of select=\"" + expression + "\"/>" +
|
|
"</xsl:template></xsl:stylesheet>";
|
|
var xsl = new ActiveXObject("Msxml2.DOMDocument");
|
|
xsl.loadXML(xslText);
|
|
try
|
|
{
|
|
var result = this.getDom().transformNode(xsl);
|
|
}
|
|
catch(error)
|
|
{
|
|
alert("Error: " + error.description);
|
|
}
|
|
return result;
|
|
};
|
|
|
|
this.reset = function()
|
|
{
|
|
this.dom = null;
|
|
};
|
|
|
|
function onPropertyChangeEventHandler()
|
|
{
|
|
document._propertyChangeDetected = true;
|
|
};
|
|
|
|
this.documentChangeDetected = function()
|
|
{
|
|
return (document.ignoreDocumentChanges ? false : this._currentElementCount != document.all.length || document._propertyChangeDetected);
|
|
};
|
|
|
|
function activateDom(helper)
|
|
{
|
|
if (!helper.dom)
|
|
{
|
|
var dom = new ActiveXObject("Msxml2.DOMDocument");
|
|
dom.async = false;
|
|
dom.resolveExternals = false;
|
|
loadDocument(dom, helper);
|
|
helper.dom = dom;
|
|
helper._currentElementCount = document.all.length;
|
|
document._propertyChangeDetected = false;
|
|
}
|
|
else
|
|
{
|
|
if (helper.documentChangeDetected())
|
|
{
|
|
var dom = helper.dom;
|
|
dom.load("");
|
|
loadDocument(dom, helper);
|
|
helper._currentElementCount = document.all.length;
|
|
document._propertyChangeDetected = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
function loadDocument(dom, helper)
|
|
{
|
|
return loadNode(dom, dom, document.body, helper);
|
|
}
|
|
|
|
function loadNode(dom, domParentNode, node, helper)
|
|
{
|
|
if (node.nodeType == 3)
|
|
{
|
|
domParentNode.appendChild(dom.createTextNode(node.nodeValue));
|
|
}
|
|
else
|
|
{
|
|
var domNode = dom.createElement(node.nodeName.toLowerCase());
|
|
if (!node.id)
|
|
{
|
|
node.id = node.uniqueID;
|
|
}
|
|
domParentNode.appendChild(domNode);
|
|
loadAttributes(dom, domNode, node);
|
|
var length = node.childNodes.length;
|
|
for(var i = 0; i < length; i ++ )
|
|
{
|
|
loadNode(dom, domNode, node.childNodes[i], helper);
|
|
}
|
|
node.attachEvent("onpropertychange", onPropertyChangeEventHandler);
|
|
}
|
|
}
|
|
|
|
function loadAttributes(dom, domParentNode, node)
|
|
{
|
|
for (var i = 0; i < node.attributes.length; i ++ )
|
|
{
|
|
var attribute = node.attributes[i];
|
|
var attributeValue = attribute.nodeValue;
|
|
if (attributeValue && attribute.specified)
|
|
{
|
|
var domAttribute = dom.createAttribute(attribute.nodeName);
|
|
domAttribute.value = attributeValue;
|
|
domParentNode.setAttributeNode(domAttribute);
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
else
|
|
{
|
|
document.reloadDom = function() {};
|
|
XPathResult.prototype.getStringValue = function()
|
|
{
|
|
return this.stringValue;
|
|
};
|
|
|
|
XPathResult.prototype.getNumberValue = function()
|
|
{
|
|
return this.numberValue;
|
|
};
|
|
|
|
XPathResult.prototype.getBooleanValue = function()
|
|
{
|
|
return this.booleanValue;
|
|
};
|
|
|
|
XPathResult.prototype.getSingleNodeValue = function()
|
|
{
|
|
return this.singleNodeValue;
|
|
};
|
|
|
|
XPathResult.prototype.getInvalidIteratorState = function()
|
|
{
|
|
return this.invalidIteratorState;
|
|
};
|
|
|
|
XPathResult.prototype.getSnapshotLength = function()
|
|
{
|
|
return this.snapshotLength;
|
|
};
|
|
|
|
XPathResult.prototype.getResultType = function()
|
|
{
|
|
return this.resultType;
|
|
};
|
|
}
|