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321 lines
9.9 KiB
Plaintext
321 lines
9.9 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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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 1.1 (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" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Ben Goodger <ben@netscape.com> (Original Author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#import "CHRDFOutlineViewDataSource.h"
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#include "nsIRDFDataSource.h"
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#include "nsIRDFService.h"
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#include "nsIRDFLiteral.h"
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#include "nsIRDFResource.h"
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#include "nsIRDFContainer.h"
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#include "nsIRDFContainerUtils.h"
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#include "nsRDFCID.h"
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#include "nsComponentManagerUtils.h"
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#include "nsIServiceManagerUtils.h"
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#include "nsXPIDLString.h"
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#include "nsString.h"
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@implementation CHRDFOutlineViewDataSource
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- (void) ensureDataSourceLoaded
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{
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nsCOMPtr<nsIRDFContainer> ctr = do_CreateInstance("@mozilla.org/rdf/container;1");
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NS_ADDREF(mContainer = ctr);
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nsCOMPtr<nsIRDFContainerUtils> ctrUtils = do_GetService("@mozilla.org/rdf/container-utils;1");
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NS_ADDREF(mContainerUtils = ctrUtils);
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nsCOMPtr<nsIRDFService> rdfService = do_GetService("@mozilla.org/rdf/rdf-service;1");
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NS_ADDREF(mRDFService = rdfService);
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mDataSource = nsnull;
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mRootResource = nsnull;
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mDictionary = [[NSMutableDictionary alloc] initWithCapacity: 30];
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}
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- (void) dealloc
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{
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NS_IF_RELEASE(mContainer);
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NS_IF_RELEASE(mContainerUtils);
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NS_IF_RELEASE(mRDFService);
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NS_IF_RELEASE(mDataSource);
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NS_IF_RELEASE(mRootResource);
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[mDictionary release];
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[super dealloc];
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}
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- (nsIRDFDataSource*) dataSource
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{
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NS_IF_ADDREF(mDataSource);
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return mDataSource;
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}
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- (nsIRDFResource*) rootResource
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{
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NS_IF_ADDREF(mRootResource);
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return mRootResource;
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}
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- (void) setDataSource: (nsIRDFDataSource*) aDataSource
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{
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nsIRDFDataSource* oldDataSource = mDataSource;
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NS_IF_ADDREF(mDataSource = aDataSource);
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NS_IF_RELEASE(oldDataSource);
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}
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- (void) setRootResource: (nsIRDFResource*) aResource
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{
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nsIRDFResource* oldResource = mRootResource;
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NS_IF_ADDREF(mRootResource = aResource);
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NS_IF_RELEASE(oldResource);
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}
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//
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// XXX - For now, we'll just say that none of our items are editable, as we aren't using any
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// RDF datasources that are mutable.
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//
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- (BOOL) outlineView: (NSOutlineView*) aOutlineView shouldEditTableColumn: (NSTableColumn*) aTableColumn
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item: (id) aItem
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{
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return NO;
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}
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- (BOOL) outlineView: (NSOutlineView*) aOutlineView isItemExpandable: (id) aItem
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{
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if (!mDataSource)
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return NO;
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if (!aItem)
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return YES; // The root is always open
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nsCOMPtr<nsIRDFResource> itemResource = dont_AddRef([aItem resource]);
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PRBool isSeq = PR_FALSE;
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mContainerUtils->IsSeq(mDataSource, itemResource, &isSeq);
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if (isSeq)
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return YES;
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nsCOMPtr<nsIRDFResource> childProperty;
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mRDFService->GetResource("http://home.netscape.com/NC-rdf#child", getter_AddRefs(childProperty));
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nsCOMPtr<nsIRDFNode> childNode;
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mDataSource->GetTarget(itemResource, childProperty, PR_TRUE, getter_AddRefs(childNode));
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return childNode != nsnull;
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}
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- (id) outlineView: (NSOutlineView*) aOutlineView child: (int) aIndex
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ofItem: (id) aItem
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{
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if (!mDataSource)
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return nil;
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nsCOMPtr<nsIRDFResource> resource = !aItem ? dont_AddRef([self rootResource]) : dont_AddRef([aItem resource]);
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nsCOMPtr<nsIRDFResource> ordinalResource;
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mContainerUtils->IndexToOrdinalResource(aIndex + 1, getter_AddRefs(ordinalResource));
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nsCOMPtr<nsIRDFNode> childNode;
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mDataSource->GetTarget(resource, ordinalResource, PR_TRUE, getter_AddRefs(childNode));
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if (childNode) {
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// Yay. A regular container. We don't need to count, we can go directly to
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// our object.
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nsCOMPtr<nsIRDFResource> childResource(do_QueryInterface(childNode));
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if (childResource)
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return [self MakeWrapperFor:childResource];
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}
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else
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{
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// Oh well, not a regular container. We need to count, dagnabbit.
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nsCOMPtr<nsIRDFResource> childProperty;
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mRDFService->GetResource("http://home.netscape.com/NC-rdf#child", getter_AddRefs(childProperty));
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nsCOMPtr<nsISimpleEnumerator> childNodes;
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mDataSource->GetTargets(resource, childProperty, PR_TRUE, getter_AddRefs(childNodes));
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nsCOMPtr<nsISupports> supp;
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PRInt32 count = 0;
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PRBool hasMore = PR_FALSE;
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while (NS_SUCCEEDED(childNodes->HasMoreElements(&hasMore)) && hasMore)
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{
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childNodes->GetNext(getter_AddRefs(supp));
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if (count == aIndex)
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break;
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count ++;
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}
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nsCOMPtr<nsIRDFResource> childResource(do_QueryInterface(supp));
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if (childResource) {
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return [self MakeWrapperFor:childResource];
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}
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}
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return nil;
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}
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- (int) outlineView: (NSOutlineView*) aOutlineView numberOfChildrenOfItem: (id) aItem;
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{
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if (!mDataSource)
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return 0;
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nsCOMPtr<nsIRDFResource> resource = dont_AddRef(aItem ? [aItem resource] : [self rootResource]);
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// XXX just assume NC:child is the only containment arc for now
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nsCOMPtr<nsIRDFResource> childProperty;
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mRDFService->GetResource("http://home.netscape.com/NC-rdf#child", getter_AddRefs(childProperty));
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nsCOMPtr<nsISimpleEnumerator> childNodes;
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mDataSource->GetTargets(resource, childProperty, PR_TRUE, getter_AddRefs(childNodes));
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PRBool hasMore = PR_FALSE;
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PRInt32 count = 0;
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while (NS_SUCCEEDED(childNodes->HasMoreElements(&hasMore)) && hasMore)
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{
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nsCOMPtr<nsISupports> supp;
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childNodes->GetNext(getter_AddRefs(supp));
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count ++;
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}
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if (count == 0) {
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nsresult rv = mContainer->Init(mDataSource, resource);
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if (NS_FAILED(rv))
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return 0;
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mContainer->GetCount(&count);
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}
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return count;
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}
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- (id) outlineView: (NSOutlineView*) aOutlineView objectValueForTableColumn: (NSTableColumn*) aTableColumn
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byItem: (id) aItem
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{
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if (!mDataSource || !aItem)
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return nil;
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// The table column's identifier is the RDF Resource URI of the property being displayed in
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// that column, e.g. "http://home.netscape.com/NC-rdf#Name"
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NSString* columnPropertyURI = [aTableColumn identifier];
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nsCOMPtr<nsIRDFResource> propertyResource;
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mRDFService->GetResource([columnPropertyURI cString], getter_AddRefs(propertyResource));
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nsCOMPtr<nsIRDFResource> resource = dont_AddRef([aItem resource]);
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nsCOMPtr<nsIRDFNode> valueNode;
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mDataSource->GetTarget(resource, propertyResource, PR_TRUE, getter_AddRefs(valueNode));
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if (!valueNode) {
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#if DEBUG
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NSLog(@"ValueNode is null in RDF objectValueForTableColumn");
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#endif
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return nil;
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}
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nsCOMPtr<nsIRDFLiteral> valueLiteral(do_QueryInterface(valueNode));
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if (!valueLiteral)
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return nil;
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nsXPIDLString literalValue;
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valueLiteral->GetValue(getter_Copies(literalValue));
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return [NSString stringWithCharacters: literalValue.get() length:literalValue.Length()];
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}
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- (void) outlineView: (NSOutlineView*) aOutlineView setObjectValue: (id) aObject
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forTableColumn: (NSTableColumn*) aTableColumn
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byItem: (id) aItem
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{
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}
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- (void) reloadDataForItem: (id) aItem reloadChildren: (BOOL) aReloadChildren
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{
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if (!aItem)
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[mOutlineView reloadData];
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else
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[mOutlineView reloadItem: aItem reloadChildren: aReloadChildren];
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}
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- (id) MakeWrapperFor: (nsIRDFResource*) aRDFResource
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{
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RDFOutlineViewItem* item = [[[RDFOutlineViewItem alloc] init] autorelease];
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[item setResource: aRDFResource];
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// keep a copy around
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const char* resourceValue;
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aRDFResource->GetValueConst(&resourceValue);
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[mDictionary setObject:item forKey:[NSString stringWithCString:resourceValue]];
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return item;
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}
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@end
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@implementation RDFOutlineViewItem
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- (void) dealloc
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{
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NS_IF_RELEASE(mResource);
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[super dealloc];
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}
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- (nsIRDFResource*) resource
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{
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NS_IF_ADDREF(mResource);
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return mResource;
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}
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- (void) setResource: (nsIRDFResource*) aResource
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{
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nsIRDFResource* oldResource = mResource;
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NS_IF_ADDREF(mResource = aResource);
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NS_IF_RELEASE(oldResource);
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}
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@end
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