зеркало из https://github.com/mozilla/pjs.git
The RDF toolbar builder (for constructing RDF toolbars like the Personal Toolbar).
This commit is contained in:
hyatt%netscape.com
Родитель
3eaa5b74f8
Коммит
471a2f0f6e
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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/* XXX: Teach this how to make toolboxes as well as toolbars. */
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#include "nsCOMPtr.h"
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#include "nsCRT.h"
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#include "nsIAtom.h"
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#include "nsIContent.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMElementObserver.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMNodeObserver.h"
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#include "nsIDocument.h"
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#include "nsINameSpaceManager.h"
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#include "nsIRDFContentModelBuilder.h"
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#include "nsIRDFCursor.h"
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#include "nsIRDFCompositeDataSource.h"
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#include "nsIRDFDocument.h"
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#include "nsIRDFNode.h"
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#include "nsIRDFObserver.h"
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#include "nsIRDFService.h"
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#include "nsIServiceManager.h"
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#include "nsINameSpaceManager.h"
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#include "nsIServiceManager.h"
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#include "nsISupportsArray.h"
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#include "nsIURL.h"
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#include "nsLayoutCID.h"
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#include "nsRDFCID.h"
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#include "nsRDFContentUtils.h"
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#include "nsString.h"
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#include "rdf.h"
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#include "rdfutil.h"
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#include "nsVoidArray.h"
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#include "rdf_qsort.h"
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#include "nsRDFGenericBuilder.h"
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////////////////////////////////////////////////////////////////////////
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DEFINE_RDF_VOCAB(NC_NAMESPACE_URI, NC, child);
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DEFINE_RDF_VOCAB(NC_NAMESPACE_URI, NC, Columns);
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DEFINE_RDF_VOCAB(NC_NAMESPACE_URI, NC, Column);
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DEFINE_RDF_VOCAB(NC_NAMESPACE_URI, NC, Folder);
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DEFINE_RDF_VOCAB(NC_NAMESPACE_URI, NC, Title);
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DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, child);
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////////////////////////////////////////////////////////////////////////
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static NS_DEFINE_IID(kIContentIID, NS_ICONTENT_IID);
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static NS_DEFINE_IID(kIDocumentIID, NS_IDOCUMENT_IID);
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static NS_DEFINE_IID(kINameSpaceManagerIID, NS_INAMESPACEMANAGER_IID);
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static NS_DEFINE_IID(kIRDFResourceIID, NS_IRDFRESOURCE_IID);
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static NS_DEFINE_IID(kIRDFLiteralIID, NS_IRDFLITERAL_IID);
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static NS_DEFINE_IID(kIRDFContentModelBuilderIID, NS_IRDFCONTENTMODELBUILDER_IID);
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static NS_DEFINE_IID(kIRDFObserverIID, NS_IRDFOBSERVER_IID);
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static NS_DEFINE_IID(kIRDFServiceIID, NS_IRDFSERVICE_IID);
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static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
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static NS_DEFINE_CID(kNameSpaceManagerCID, NS_NAMESPACEMANAGER_CID);
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static NS_DEFINE_CID(kRDFServiceCID, NS_RDFSERVICE_CID);
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////////////////////////////////////////////////////////////////////////
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class RDFToolbarBuilderImpl : public RDFGenericBuilderImpl
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{
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public:
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RDFToolbarBuilderImpl();
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virtual ~RDFToolbarBuilderImpl();
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// Implementation methods
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nsresult
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AddWidgetItem(nsIContent* aToolbarItemElement,
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nsIRDFResource* aProperty,
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nsIRDFResource* aValue, PRInt32 aNaturalOrderPos);
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nsresult
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GetRootWidgetAtom(nsIAtom** aResult) {
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NS_ADDREF(kToolbarAtom);
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*aResult = kToolbarAtom;
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return NS_OK;
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}
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nsresult
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GetWidgetItemAtom(nsIAtom** aResult) {
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NS_ADDREF(kTitledButtonAtom);
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*aResult = kTitledButtonAtom;
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return NS_OK;
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}
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nsresult
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GetWidgetFolderAtom(nsIAtom** aResult) {
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NS_ADDREF(kTitledButtonAtom);
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*aResult = kTitledButtonAtom;
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return NS_OK;
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}
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nsresult
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GetInsertionRootAtom(nsIAtom** aResult) {
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NS_ADDREF(kToolbarAtom);
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*aResult = kToolbarAtom;
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return NS_OK;
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}
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nsresult
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GetItemAtomThatContainsTheChildren(nsIAtom** aResult) {
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NS_ADDREF(kTitledButtonAtom);
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*aResult = kTitledButtonAtom;
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return NS_OK;
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}
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// pseudo-constants
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static nsrefcnt gRefCnt;
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static nsIAtom* kToolbarAtom;
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static nsIAtom* kTitledButtonAtom;
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};
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////////////////////////////////////////////////////////////////////////
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nsrefcnt RDFToolbarBuilderImpl::gRefCnt = 0;
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nsIAtom* RDFToolbarBuilderImpl::kToolbarAtom;
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nsIAtom* RDFToolbarBuilderImpl::kTitledButtonAtom;
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////////////////////////////////////////////////////////////////////////
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nsresult
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NS_NewRDFToolbarBuilder(nsIRDFContentModelBuilder** result)
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{
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NS_PRECONDITION(result != nsnull, "null ptr");
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if (! result)
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return NS_ERROR_NULL_POINTER;
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RDFToolbarBuilderImpl* builder = new RDFToolbarBuilderImpl();
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if (! builder)
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return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(builder);
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*result = builder;
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return NS_OK;
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}
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RDFToolbarBuilderImpl::RDFToolbarBuilderImpl(void)
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: RDFGenericBuilderImpl()
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{
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if (gRefCnt == 0) {
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kToolbarAtom = NS_NewAtom("toolbar");
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kTitledButtonAtom = NS_NewAtom("titledbutton");
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}
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++gRefCnt;
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}
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RDFToolbarBuilderImpl::~RDFToolbarBuilderImpl(void)
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{
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--gRefCnt;
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if (gRefCnt == 0) {
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NS_RELEASE(kToolbarAtom);
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NS_RELEASE(kTitledButtonAtom);
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}
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}
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////////////////////////////////////////////////////////////////////////
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// Implementation methods
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nsresult
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RDFToolbarBuilderImpl::AddWidgetItem(nsIContent* aElement,
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nsIRDFResource* aProperty,
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nsIRDFResource* aValue,
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PRInt32 naturalOrderPos)
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{
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nsresult rv;
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nsCOMPtr<nsIContent> toolbarParent;
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toolbarParent = dont_QueryInterface(aElement);
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if (!IsWidgetElement(aElement) && !IsWidgetInsertionRootElement(aElement))
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{
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NS_ERROR("Can't add something here!");
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return NS_ERROR_UNEXPECTED;
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}
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// Create the <xul:titledbutton> element
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nsCOMPtr<nsIContent> toolbarItem;
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if (NS_FAILED(rv = CreateResourceElement(kNameSpaceID_XUL,
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kTitledButtonAtom,
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aValue,
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getter_AddRefs(toolbarItem))))
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return rv;
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// Add the <xul:titledbutton> to the <xul:toolbar> element.
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toolbarParent->AppendChildTo(toolbarItem, PR_TRUE);
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// Add miscellaneous attributes by iterating _all_ of the
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// properties out of the resource.
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nsCOMPtr<nsIRDFArcsOutCursor> arcs;
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if (NS_FAILED(rv = mDB->ArcLabelsOut(aValue, getter_AddRefs(arcs)))) {
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NS_ERROR("unable to get arcs out");
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return rv;
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}
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while (NS_SUCCEEDED(rv = arcs->Advance())) {
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nsCOMPtr<nsIRDFResource> property;
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if (NS_FAILED(rv = arcs->GetPredicate(getter_AddRefs(property)))) {
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NS_ERROR("unable to get cursor value");
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return rv;
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}
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// Ignore ordinal properties
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if (rdf_IsOrdinalProperty(property))
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continue;
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PRInt32 nameSpaceID;
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nsCOMPtr<nsIAtom> tag;
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if (NS_FAILED(rv = mDocument->SplitProperty(property, &nameSpaceID, getter_AddRefs(tag)))) {
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NS_ERROR("unable to split property");
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return rv;
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}
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nsCOMPtr<nsIRDFNode> value;
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if (NS_FAILED(rv = mDB->GetTarget(aValue, property, PR_TRUE, getter_AddRefs(value)))) {
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NS_ERROR("unable to get target");
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return rv;
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}
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nsCOMPtr<nsIRDFResource> resource;
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nsCOMPtr<nsIRDFLiteral> literal;
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nsAutoString s;
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if (NS_SUCCEEDED(rv = value->QueryInterface(kIRDFResourceIID, getter_AddRefs(resource)))) {
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const char* uri;
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resource->GetValue(&uri);
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s = uri;
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}
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else if (NS_SUCCEEDED(rv = value->QueryInterface(kIRDFLiteralIID, getter_AddRefs(literal)))) {
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const PRUnichar* p;
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literal->GetValue(&p);
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s = p;
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}
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else {
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NS_ERROR("not a resource or a literal");
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return NS_ERROR_UNEXPECTED;
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}
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toolbarItem->SetAttribute(nameSpaceID, tag, s, PR_FALSE);
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nsString nameAtom;
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tag->ToString(nameAtom);
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if (nameAtom == "Name")
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{
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nsIAtom* lowerName = NS_NewAtom("value");
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// Hack to ensure that we add in a lowercase value attribute also.
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toolbarItem->SetAttribute(kNameSpaceID_None, lowerName, s, PR_FALSE);
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NS_RELEASE(lowerName);
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}
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// XXX (Dave) I want these to go away. Style sheets should be used for these.
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nsIAtom* alignment = NS_NewAtom("align");
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nsIAtom* imagesrc = NS_NewAtom("src");
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toolbarItem->SetAttribute(kNameSpaceID_None, alignment, "right", PR_FALSE);
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toolbarItem->SetAttribute(kNameSpaceID_None, imagesrc, "resource:/res/toolbar/TB_Location.gif", PR_FALSE);
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}
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if (NS_FAILED(rv) && (rv != NS_ERROR_RDF_CURSOR_EMPTY)) {
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NS_ERROR("error advancing cursor");
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return rv;
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}
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// Finally, mark this as a "container" so that we know to
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// recursively generate kids if they're asked for.
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if (NS_FAILED(rv = toolbarItem->SetAttribute(kNameSpaceID_RDF, kContainerAtom, "true", PR_FALSE)))
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return rv;
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return NS_OK;
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}
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