зеркало из https://github.com/mozilla/gecko-dev.git
Initial revision.
This commit is contained in:
waterson%netscape.com
Родитель
9eadf84443
Коммит
99a354e2b8
|
|
@ -0,0 +1,284 @@
|
|||
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
||||
*
|
||||
* The contents of this file are subject to the Netscape Public License
|
||||
* Version 1.0 (the "License"); you may not use this file except in
|
||||
* compliance with the License. You may obtain a copy of the License at
|
||||
* http://www.mozilla.org/NPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS IS"
|
||||
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
|
||||
* the License for the specific language governing rights and limitations
|
||||
* under the License.
|
||||
*
|
||||
* The Original Code is Mozilla Communicator client code.
|
||||
*
|
||||
* The Initial Developer of the Original Code is Netscape Communications
|
||||
* Corporation. Portions created by Netscape are Copyright (C) 1998
|
||||
* Netscape Communications Corporation. All Rights Reserved.
|
||||
*/
|
||||
|
||||
/*
|
||||
|
||||
This builds an HTML-like model, complete with text nodes, that can
|
||||
be displayed in a vanilla HTML content viewer. You can apply CSS2
|
||||
styles to the text, etc.
|
||||
|
||||
*/
|
||||
|
||||
#include "nsIRDFContent.h"
|
||||
#include "nsIRDFCursor.h"
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||||
#include "nsIRDFDataBase.h"
|
||||
#include "nsIRDFNode.h"
|
||||
#include "nsIRDFResourceManager.h"
|
||||
#include "nsIServiceManager.h"
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||||
#include "nsISupportsArray.h"
|
||||
#include "nsITextContent.h"
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||||
#include "nsLayoutCID.h"
|
||||
#include "nsRDFCID.h"
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||||
#include "nsRDFDocument.h"
|
||||
#include "rdfutil.h"
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
|
||||
static NS_DEFINE_IID(kIContentIID, NS_ICONTENT_IID);
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||||
static NS_DEFINE_IID(kIDocumentIID, NS_IDOCUMENT_IID);
|
||||
static NS_DEFINE_IID(kIRDFResourceManagerIID, NS_IRDFRESOURCEMANAGER_IID);
|
||||
static NS_DEFINE_IID(kITextContentIID, NS_ITEXT_CONTENT_IID); // XXX grr...
|
||||
|
||||
static NS_DEFINE_CID(kRDFResourceManagerCID, NS_RDFRESOURCEMANAGER_CID);
|
||||
static NS_DEFINE_CID(kTextNodeCID, NS_TEXTNODE_CID);
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
|
||||
class RDFHTMLDocumentImpl : public nsRDFDocument {
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||||
public:
|
||||
RDFHTMLDocumentImpl();
|
||||
virtual ~RDFHTMLDocumentImpl();
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|
||||
// nsIRDFDocument interface
|
||||
NS_IMETHOD CreateChildren(nsIRDFNode* resource, nsISupportsArray* children);
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||||
|
||||
protected:
|
||||
nsresult NewChild(nsIRDFNode* resource,
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||||
nsIRDFContent*& result,
|
||||
PRBool childrenMustBeGenerated);
|
||||
|
||||
nsresult CreateChild(nsIRDFNode* property,
|
||||
nsIRDFNode* value,
|
||||
nsIRDFContent*& result);
|
||||
};
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
|
||||
RDFHTMLDocumentImpl::RDFHTMLDocumentImpl(void)
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||||
{
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||||
}
|
||||
|
||||
RDFHTMLDocumentImpl::~RDFHTMLDocumentImpl(void)
|
||||
{
|
||||
}
|
||||
|
||||
NS_IMETHODIMP
|
||||
RDFHTMLDocumentImpl::CreateChildren(nsIRDFNode* resource, nsISupportsArray* children)
|
||||
{
|
||||
nsresult rv;
|
||||
|
||||
NS_ASSERTION(mDB, "not initialized");
|
||||
if (! mDB)
|
||||
return NS_ERROR_NOT_INITIALIZED;
|
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|
||||
nsIRDFResourceManager* mgr;
|
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if (NS_FAILED(rv = nsServiceManager::GetService(kRDFResourceManagerCID,
|
||||
kIRDFResourceManagerIID,
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(nsISupports**) &mgr)))
|
||||
return rv;
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|
||||
nsIRDFCursor* properties = nsnull;
|
||||
PRBool moreProperties;
|
||||
|
||||
#ifdef ONLY_CREATE_RDF_CONTAINERS_AS_CONTENT
|
||||
if (! rdf_IsContainer(mgr, mDB, resource))
|
||||
goto done;
|
||||
#endif
|
||||
|
||||
// Create a cursor that'll enumerate all of the outbound arcs
|
||||
if (NS_FAILED(rv = mDB->ArcLabelsOut(resource, properties)))
|
||||
goto done;
|
||||
|
||||
while (NS_SUCCEEDED(rv = properties->HasMoreElements(moreProperties)) && moreProperties) {
|
||||
nsIRDFNode* property = nsnull;
|
||||
PRBool tv;
|
||||
|
||||
if (NS_FAILED(rv = properties->GetNext(property, tv /* ignored */)))
|
||||
break;
|
||||
|
||||
nsAutoString uri;
|
||||
if (NS_FAILED(rv = property->GetStringValue(uri))) {
|
||||
NS_RELEASE(property);
|
||||
break;
|
||||
}
|
||||
|
||||
#ifdef ONLY_CREATE_RDF_CONTAINERS_AS_CONTENT
|
||||
if (! rdf_IsOrdinalProperty(uri)) {
|
||||
NS_RELEASE(property);
|
||||
continue;
|
||||
}
|
||||
#endif
|
||||
|
||||
// Create a second cursor that'll enumerate all of the values
|
||||
// for all of the arcs.
|
||||
nsIRDFCursor* values;
|
||||
if (NS_FAILED(rv = mDB->GetTargets(resource, property, PR_TRUE, values))) {
|
||||
NS_RELEASE(property);
|
||||
break;
|
||||
}
|
||||
|
||||
PRBool moreValues;
|
||||
while (NS_SUCCEEDED(rv = values->HasMoreElements(moreValues)) && moreValues) {
|
||||
nsIRDFNode* value = nsnull;
|
||||
if (NS_FAILED(rv = values->GetNext(value, tv /* ignored */)))
|
||||
break;
|
||||
|
||||
// XXX At this point, we need to decide exactly what kind
|
||||
// of kid to create in the content model. For example, for
|
||||
// leaf nodes, we probably want to create some kind of
|
||||
// text element.
|
||||
nsIRDFContent* child;
|
||||
if (NS_FAILED(rv = CreateChild(property, value, child))) {
|
||||
NS_RELEASE(value);
|
||||
break;
|
||||
}
|
||||
|
||||
// And finally, add the child into the content model
|
||||
children->AppendElement(child);
|
||||
|
||||
NS_RELEASE(child);
|
||||
NS_RELEASE(value);
|
||||
}
|
||||
|
||||
NS_RELEASE(values);
|
||||
NS_RELEASE(property);
|
||||
|
||||
if (NS_FAILED(rv))
|
||||
break;
|
||||
}
|
||||
|
||||
done:
|
||||
NS_IF_RELEASE(properties);
|
||||
nsServiceManager::ReleaseService(kRDFResourceManagerCID, mgr);
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
|
||||
|
||||
nsresult
|
||||
RDFHTMLDocumentImpl::NewChild(nsIRDFNode* resource,
|
||||
nsIRDFContent*& result,
|
||||
PRBool childrenMustBeGenerated)
|
||||
{
|
||||
nsresult rv;
|
||||
|
||||
nsIRDFContent* child;
|
||||
if (NS_FAILED(rv = NS_NewRDFElement(&child)))
|
||||
return rv;
|
||||
|
||||
if (NS_FAILED(rv = child->Init(this, resource, childrenMustBeGenerated))) {
|
||||
NS_RELEASE(child);
|
||||
return rv;
|
||||
}
|
||||
|
||||
result = child;
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
|
||||
nsresult
|
||||
RDFHTMLDocumentImpl::CreateChild(nsIRDFNode* property,
|
||||
nsIRDFNode* value,
|
||||
nsIRDFContent*& result)
|
||||
{
|
||||
nsresult rv;
|
||||
nsIRDFContent* child = nsnull;
|
||||
nsIRDFContent* grandchild = nsnull;
|
||||
nsIContent* grandchild2 = nsnull;
|
||||
nsITextContent* text = nsnull;
|
||||
nsIDocument* doc = nsnull;
|
||||
nsAutoString v;
|
||||
|
||||
// Construct a new child node. We will explicitly be generating
|
||||
// all of this node's kids, so set the
|
||||
// "children-must-be-generated" flag to false.
|
||||
if (NS_FAILED(rv = NewChild(property, child, PR_FALSE)))
|
||||
goto error;
|
||||
|
||||
// If this is NOT a resource, then construct a grandchild which is
|
||||
// just a vanilla text node.
|
||||
if (! rdf_IsResource(value)) {
|
||||
if (NS_FAILED(rv = value->GetStringValue(v)))
|
||||
goto error;
|
||||
|
||||
if (NS_FAILED(rv = nsRepository::CreateInstance(kTextNodeCID,
|
||||
nsnull,
|
||||
kIContentIID,
|
||||
(void**) &grandchild2)))
|
||||
goto error;
|
||||
|
||||
if (NS_FAILED(rv = QueryInterface(kIDocumentIID, (void**) &doc)))
|
||||
goto error;
|
||||
|
||||
if (NS_FAILED(rv = grandchild2->SetDocument(doc, PR_FALSE)))
|
||||
goto error;
|
||||
|
||||
NS_RELEASE(doc);
|
||||
|
||||
if (NS_FAILED(rv = grandchild2->QueryInterface(kITextContentIID, (void**) &text)))
|
||||
goto error;
|
||||
|
||||
if (NS_FAILED(rv = text->SetText(v.GetUnicode(), v.Length(), PR_FALSE)))
|
||||
goto error;
|
||||
|
||||
NS_RELEASE(text);
|
||||
|
||||
// hook it up to the child
|
||||
if (NS_FAILED(rv = grandchild2->SetParent(child)))
|
||||
goto error;
|
||||
|
||||
if (NS_FAILED(rv = child->AppendChildTo(NS_STATIC_CAST(nsIContent*, grandchild2), PR_TRUE)))
|
||||
goto error;
|
||||
}
|
||||
|
||||
// Construct a grandchild which is another RDF resource node. This
|
||||
// node *will* need to recursively generate its children on
|
||||
// demand, so set the children-must-be-generated flag to true.
|
||||
if (NS_FAILED(rv = NewChild(value, grandchild, PR_TRUE)))
|
||||
goto error;
|
||||
|
||||
if (NS_FAILED(rv = child->AppendChildTo(NS_STATIC_CAST(nsIContent*, grandchild), PR_TRUE)))
|
||||
goto error;
|
||||
|
||||
// whew!
|
||||
result = child;
|
||||
return NS_OK;
|
||||
|
||||
error:
|
||||
NS_IF_RELEASE(text);
|
||||
NS_IF_RELEASE(doc);
|
||||
NS_IF_RELEASE(grandchild);
|
||||
NS_IF_RELEASE(child);
|
||||
return rv;
|
||||
}
|
||||
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
|
||||
nsresult NS_NewRDFHTMLDocument(nsIRDFDocument** result)
|
||||
{
|
||||
nsIRDFDocument* doc = new RDFHTMLDocumentImpl();
|
||||
if (! doc)
|
||||
return NS_ERROR_OUT_OF_MEMORY;
|
||||
|
||||
NS_ADDREF(doc);
|
||||
*result = doc;
|
||||
return NS_OK;
|
||||
}
|
||||
|
|
@ -0,0 +1,41 @@
|
|||
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
||||
*
|
||||
* The contents of this file are subject to the Netscape Public License
|
||||
* Version 1.0 (the "License"); you may not use this file except in
|
||||
* compliance with the License. You may obtain a copy of the License at
|
||||
* http://www.mozilla.org/NPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS IS"
|
||||
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
|
||||
* the License for the specific language governing rights and limitations
|
||||
* under the License.
|
||||
*
|
||||
* The Original Code is Mozilla Communicator client code.
|
||||
*
|
||||
* The Initial Developer of the Original Code is Netscape Communications
|
||||
* Corporation. Portions created by Netscape are Copyright (C) 1998
|
||||
* Netscape Communications Corporation. All Rights Reserved.
|
||||
*/
|
||||
|
||||
#include "nsIRDFContent.h"
|
||||
#include "nsIRDFCursor.h"
|
||||
#include "nsIRDFDataBase.h"
|
||||
#include "nsIRDFNode.h"
|
||||
#include "nsIRDFResourceManager.h"
|
||||
#include "nsIServiceManager.h"
|
||||
#include "nsISupportsArray.h"
|
||||
#include "nsLayoutCID.h"
|
||||
#include "nsRDFCID.h"
|
||||
#include "nsRDFDocument.h"
|
||||
#include "rdfutil.h"
|
||||
|
||||
// XXX just a stub for now.
|
||||
|
||||
nsresult NS_NewRDFTreeDocument(nsIRDFDocument** result)
|
||||
{
|
||||
*result = nsnull;
|
||||
return NS_NOINTERFACE;
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,123 @@
|
|||
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
||||
*
|
||||
* The contents of this file are subject to the Netscape Public License
|
||||
* Version 1.0 (the "License"); you may not use this file except in
|
||||
* compliance with the License. You may obtain a copy of the License at
|
||||
* http://www.mozilla.org/NPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS IS"
|
||||
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
|
||||
* the License for the specific language governing rights and limitations
|
||||
* under the License.
|
||||
*
|
||||
* The Original Code is Mozilla Communicator client code.
|
||||
*
|
||||
* The Initial Developer of the Original Code is Netscape Communications
|
||||
* Corporation. Portions created by Netscape are Copyright (C) 1998
|
||||
* Netscape Communications Corporation. All Rights Reserved.
|
||||
*/
|
||||
|
||||
#include "nsIRDFDataBase.h"
|
||||
#include "nsIRDFNode.h"
|
||||
#include "nsIRDFResourceManager.h"
|
||||
#include "nsString.h"
|
||||
#include "rdfutil.h"
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
// RDF core vocabulary
|
||||
|
||||
#include "rdf.h"
|
||||
#define RDF_NAMESPACE_URI "http://www.w3.org/TR/WD-rdf-syntax#"
|
||||
static const char kRDFNameSpaceURI[] = RDF_NAMESPACE_URI;
|
||||
DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, Alt);
|
||||
DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, Bag);
|
||||
DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, Description);
|
||||
DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, ID);
|
||||
DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, RDF);
|
||||
DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, Seq);
|
||||
DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, about);
|
||||
DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, aboutEach);
|
||||
DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, bagID);
|
||||
DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, instanceOf);
|
||||
DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, li);
|
||||
DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, resource);
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
|
||||
PRBool
|
||||
rdf_IsOrdinalProperty(const nsString& uri)
|
||||
{
|
||||
if (uri.Find(kRDFNameSpaceURI) != 0)
|
||||
return PR_FALSE;
|
||||
|
||||
nsAutoString tag(uri);
|
||||
tag.Cut(0, sizeof(kRDFNameSpaceURI) - 1);
|
||||
|
||||
if (tag[0] != '_')
|
||||
return PR_FALSE;
|
||||
|
||||
for (PRInt32 i = tag.Length() - 1; i >= 1; --i) {
|
||||
if (tag[i] < '0' || tag[i] > '9')
|
||||
return PR_FALSE;
|
||||
}
|
||||
|
||||
return PR_TRUE;
|
||||
}
|
||||
|
||||
|
||||
PRBool
|
||||
rdf_IsContainer(nsIRDFResourceManager* mgr,
|
||||
nsIRDFDataBase* db,
|
||||
nsIRDFNode* resource)
|
||||
{
|
||||
PRBool result = PR_FALSE;
|
||||
|
||||
nsIRDFNode* RDF_instanceOf = nsnull;
|
||||
nsIRDFNode* RDF_Bag = nsnull;
|
||||
|
||||
nsresult rv;
|
||||
if (NS_FAILED(rv = mgr->GetNode(kURIRDF_instanceOf, RDF_instanceOf)))
|
||||
goto done;
|
||||
|
||||
if (NS_FAILED(rv = mgr->GetNode(kURIRDF_Bag, RDF_Bag)))
|
||||
goto done;
|
||||
|
||||
rv = db->HasAssertion(resource, RDF_instanceOf, RDF_Bag, PR_TRUE, result);
|
||||
|
||||
done:
|
||||
NS_IF_RELEASE(RDF_Bag);
|
||||
NS_IF_RELEASE(RDF_instanceOf);
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
// A complete hack that looks at the string value of a node and
|
||||
// guesses if it's a resource
|
||||
PRBool
|
||||
rdf_IsResource(nsIRDFNode* node)
|
||||
{
|
||||
nsresult rv;
|
||||
nsAutoString v;
|
||||
|
||||
if (NS_FAILED(rv = node->GetStringValue(v)))
|
||||
return PR_FALSE;
|
||||
|
||||
PRInt32 index;
|
||||
|
||||
// A URI needs a colon.
|
||||
index = v.Find(':');
|
||||
if (index < 0)
|
||||
return PR_FALSE;
|
||||
|
||||
// Assume some sane maximum for protocol specs
|
||||
#define MAX_PROTOCOL_SPEC 10
|
||||
if (index > MAX_PROTOCOL_SPEC)
|
||||
return PR_FALSE;
|
||||
|
||||
// It can't have spaces or newlines or tabs
|
||||
if (v.Find(' ') > 0 || v.Find('\n') > 0 || v.Find('\t') > 0)
|
||||
return PR_FALSE;
|
||||
|
||||
return PR_TRUE;
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,55 @@
|
|||
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
||||
*
|
||||
* The contents of this file are subject to the Netscape Public License
|
||||
* Version 1.0 (the "License"); you may not use this file except in
|
||||
* compliance with the License. You may obtain a copy of the License at
|
||||
* http://www.mozilla.org/NPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS IS"
|
||||
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
|
||||
* the License for the specific language governing rights and limitations
|
||||
* under the License.
|
||||
*
|
||||
* The Original Code is Mozilla Communicator client code.
|
||||
*
|
||||
* The Initial Developer of the Original Code is Netscape Communications
|
||||
* Corporation. Portions created by Netscape are Copyright (C) 1998
|
||||
* Netscape Communications Corporation. All Rights Reserved.
|
||||
*/
|
||||
|
||||
#ifndef rdfutil_h__
|
||||
#define rdfutil_h__
|
||||
|
||||
#include "prtypes.h"
|
||||
|
||||
class nsIRDFDataBase;
|
||||
class nsIRDFNode;
|
||||
class nsIRDFResourceManager;
|
||||
class nsString;
|
||||
|
||||
/**
|
||||
* Returns PR_TRUE if the URI is an RDF ordinal property; e.g., rdf:_1,
|
||||
* rdf:_2, etc.
|
||||
*/
|
||||
PRBool
|
||||
rdf_IsOrdinalProperty(const nsString& uri);
|
||||
|
||||
|
||||
/**
|
||||
* Returns PR_TRUE if the resource is a container resource; e.g., an
|
||||
* rdf:Bag.
|
||||
*/
|
||||
PRBool
|
||||
rdf_IsContainer(nsIRDFResourceManager* mgr,
|
||||
nsIRDFDataBase* db,
|
||||
nsIRDFNode* resource);
|
||||
|
||||
/**
|
||||
* Tries to guess whether the specified node is a resource or a literal.
|
||||
*/
|
||||
PRBool
|
||||
rdf_IsResource(nsIRDFNode* node);
|
||||
|
||||
#endif // rdfutil_h__
|
||||
|
||||
|
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