1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/xul/templates/src/nsXULTemplateResultXML.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,204 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "nsIServiceManager.h"
1.10 +#include "nsIDOMNode.h"
1.11 +#include "nsIDOMElement.h"
1.12 +#include "nsIContent.h"
1.13 +
1.14 +#include "nsIRDFService.h"
1.15 +
1.16 +#include "nsXULTemplateResultXML.h"
1.17 +#include "nsXMLBinding.h"
1.18 +
1.19 +static uint32_t sTemplateId = 0;
1.20 +
1.21 +NS_IMPL_ISUPPORTS(nsXULTemplateResultXML, nsIXULTemplateResult)
1.22 +
1.23 +nsXULTemplateResultXML::nsXULTemplateResultXML(nsXMLQuery* aQuery,
1.24 + nsIDOMNode* aNode,
1.25 + nsXMLBindingSet* aBindings)
1.26 + : mQuery(aQuery), mNode(aNode)
1.27 +{
1.28 + nsCOMPtr<nsIContent> content = do_QueryInterface(mNode);
1.29 +
1.30 + // If the node has an id, create the uri from it. Otherwise, there isn't
1.31 + // anything to identify the node with so just use a somewhat random number.
1.32 + nsCOMPtr<nsIAtom> id = content->GetID();
1.33 + if (id) {
1.34 + nsCOMPtr<nsIURI> uri = content->GetBaseURI();
1.35 + nsAutoCString spec;
1.36 + uri->GetSpec(spec);
1.37 +
1.38 + mId = NS_ConvertUTF8toUTF16(spec);
1.39 +
1.40 + nsAutoString idstr;
1.41 + id->ToString(idstr);
1.42 + mId += NS_LITERAL_STRING("#") + idstr;
1.43 + }
1.44 + else {
1.45 + nsAutoString rowid(NS_LITERAL_STRING("row"));
1.46 + rowid.AppendInt(++sTemplateId);
1.47 + mId.Assign(rowid);
1.48 + }
1.49 +
1.50 + if (aBindings)
1.51 + mRequiredValues.SetBindingSet(aBindings);
1.52 +}
1.53 +
1.54 +NS_IMETHODIMP
1.55 +nsXULTemplateResultXML::GetIsContainer(bool* aIsContainer)
1.56 +{
1.57 + // a node is considered a container if it has children
1.58 + if (mNode)
1.59 + mNode->HasChildNodes(aIsContainer);
1.60 + else
1.61 + *aIsContainer = false;
1.62 + return NS_OK;
1.63 +}
1.64 +
1.65 +NS_IMETHODIMP
1.66 +nsXULTemplateResultXML::GetIsEmpty(bool* aIsEmpty)
1.67 +{
1.68 + // a node is considered empty if it has no elements as children
1.69 + nsCOMPtr<nsIContent> content = do_QueryInterface(mNode);
1.70 + if (content) {
1.71 + for (nsIContent* child = content->GetFirstChild();
1.72 + child;
1.73 + child = child->GetNextSibling()) {
1.74 + if (child->IsElement()) {
1.75 + *aIsEmpty = false;
1.76 + return NS_OK;
1.77 + }
1.78 + }
1.79 + }
1.80 +
1.81 + *aIsEmpty = true;
1.82 + return NS_OK;
1.83 +}
1.84 +
1.85 +NS_IMETHODIMP
1.86 +nsXULTemplateResultXML::GetMayProcessChildren(bool* aMayProcessChildren)
1.87 +{
1.88 + *aMayProcessChildren = true;
1.89 + return NS_OK;
1.90 +}
1.91 +
1.92 +NS_IMETHODIMP
1.93 +nsXULTemplateResultXML::GetId(nsAString& aId)
1.94 +{
1.95 + aId = mId;
1.96 + return NS_OK;
1.97 +}
1.98 +
1.99 +NS_IMETHODIMP
1.100 +nsXULTemplateResultXML::GetResource(nsIRDFResource** aResource)
1.101 +{
1.102 + *aResource = nullptr;
1.103 + return NS_OK;
1.104 +}
1.105 +
1.106 +NS_IMETHODIMP
1.107 +nsXULTemplateResultXML::GetType(nsAString& aType)
1.108 +{
1.109 + aType.Truncate();
1.110 + return NS_OK;
1.111 +}
1.112 +
1.113 +NS_IMETHODIMP
1.114 +nsXULTemplateResultXML::GetBindingFor(nsIAtom* aVar, nsAString& aValue)
1.115 +{
1.116 + NS_ENSURE_ARG_POINTER(aVar);
1.117 +
1.118 + // get the position of the atom in the variables table
1.119 + nsXMLBinding* binding;
1.120 +
1.121 + int32_t idx = mRequiredValues.LookupTargetIndex(aVar, &binding);
1.122 + if (idx >= 0) {
1.123 + mRequiredValues.GetStringAssignmentFor(this, binding, idx, aValue);
1.124 + return NS_OK;
1.125 + }
1.126 +
1.127 + idx = mOptionalValues.LookupTargetIndex(aVar, &binding);
1.128 + if (idx >= 0) {
1.129 + mOptionalValues.GetStringAssignmentFor(this, binding, idx, aValue);
1.130 + return NS_OK;
1.131 + }
1.132 +
1.133 + // if the variable is not bound, just use the variable name as the name of
1.134 + // an attribute to retrieve
1.135 + nsAutoString attr;
1.136 + aVar->ToString(attr);
1.137 +
1.138 + if (attr.Length() > 1) {
1.139 + nsCOMPtr<nsIDOMElement> element = do_QueryInterface(mNode);
1.140 + if (element)
1.141 + return element->GetAttribute(Substring(attr, 1), aValue);
1.142 + }
1.143 +
1.144 + aValue.Truncate();
1.145 + return NS_OK;
1.146 +}
1.147 +
1.148 +NS_IMETHODIMP
1.149 +nsXULTemplateResultXML::GetBindingObjectFor(nsIAtom* aVar, nsISupports** aValue)
1.150 +{
1.151 + NS_ENSURE_ARG_POINTER(aVar);
1.152 +
1.153 + nsXMLBinding* binding;
1.154 + nsCOMPtr<nsIDOMNode> node;
1.155 +
1.156 + if (mQuery && aVar == mQuery->GetMemberVariable()) {
1.157 + node = mNode;
1.158 + }
1.159 + else {
1.160 + int32_t idx = mRequiredValues.LookupTargetIndex(aVar, &binding);
1.161 + if (idx > 0) {
1.162 + mRequiredValues.GetNodeAssignmentFor(this, binding, idx,
1.163 + getter_AddRefs(node));
1.164 + }
1.165 + else {
1.166 + idx = mOptionalValues.LookupTargetIndex(aVar, &binding);
1.167 + if (idx > 0) {
1.168 + mOptionalValues.GetNodeAssignmentFor(this, binding, idx,
1.169 + getter_AddRefs(node));
1.170 + }
1.171 + }
1.172 + }
1.173 +
1.174 + *aValue = node;
1.175 + NS_IF_ADDREF(*aValue);
1.176 + return NS_OK;
1.177 +}
1.178 +
1.179 +NS_IMETHODIMP
1.180 +nsXULTemplateResultXML::RuleMatched(nsISupports* aQueryNode,
1.181 + nsIDOMNode* aRuleNode)
1.182 +{
1.183 + // when a rule matches, set the bindings that must be used.
1.184 + nsXULTemplateQueryProcessorXML* processor = mQuery ? mQuery->Processor() :
1.185 + nullptr;
1.186 + if (processor) {
1.187 + nsXMLBindingSet* bindings =
1.188 + processor->GetOptionalBindingsForRule(aRuleNode);
1.189 + if (bindings)
1.190 + mOptionalValues.SetBindingSet(bindings);
1.191 + }
1.192 +
1.193 + return NS_OK;
1.194 +}
1.195 +
1.196 +NS_IMETHODIMP
1.197 +nsXULTemplateResultXML::HasBeenRemoved()
1.198 +{
1.199 + return NS_OK;
1.200 +}
1.201 +
1.202 +void
1.203 +nsXULTemplateResultXML::GetNode(nsIDOMNode** aNode)
1.204 +{
1.205 + *aNode = mNode;
1.206 + NS_IF_ADDREF(*aNode);
1.207 +}
