pjs/extensions/manticore/core/DataStore.cs

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C#
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/* -*- Mode: C#; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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/MPL/
*
* 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 Manticore.
*
* The Initial Developer of the Original Code is
* Silverstone Interactive.
* Portions created by the Initial Developer are Copyright (C) 2001
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ben Goodger <ben@netscape.com> (Original Author)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
namespace Silverstone.Manticore.Core
{
using System;
using System.Collections;
using Silverstone.Manticore.Bookmarks;
public interface IDataStore
{
void GetElements(String aContainerID, out IEnumerator aElements);
void AddObserver(IDataStoreObserver aObserver);
}
/// <summary>
/// Provides a means for a client to observe changes to a data store.
/// </summary>
public interface IDataStoreObserver
{
void OnNodeChanging(Object aOldNode, Object aNewNode);
void OnNodeChanged(Object aOldNode, Object aNewNode);
void OnNodeAdding(Object aNewNode, Object aParentNode, int aIndex);
void OnNodeAdded(Object aNewNode, Object aParentNode, int aIndex);
void OnNodeRemoving(Object aNodeRemoving);
void OnNodeRemoved(Object aNodeRemoved);
}
public class CommandTarget
{
public CommandTarget()
{
}
public CommandTarget(String aLabel, String aAccessKey, Object aData, bool aIsContainer)
{
Label = aLabel;
AccessKey = aAccessKey;
Data = aData;
IsContainer = aIsContainer;
}
private String mLabel = "";
private String mAccesskey = "";
private String mIconURL = "";
private bool mIsContainer = false;
private bool mIsOpen = false;
private Object mData = new Object();
public String Label
{
get
{
return mLabel;
}
set
{
if (mLabel != value)
mLabel = value;
}
}
public String AccessKey
{
get
{
return mAccesskey;
}
set
{
if (mAccesskey != value)
mAccesskey = value;
}
}
public bool IsContainer
{
get
{
return mIsContainer;
}
set
{
mIsContainer = value;
}
}
public bool IsOpen
{
get
{
return mIsOpen;
}
set
{
mIsOpen = value;
}
}
public String IconURL
{
get
{
return mIconURL;
}
set
{
mIconURL = value;
}
}
public Object Data
{
get
{
return mData;
}
set
{
if (!mData.Equals(value))
mData = value;
}
}
}
public class DataStoreRegistry
{
public static IDataStore GetDataStore(String aDataStore)
{
switch (aDataStore)
{
case "Bookmarks":
// Need to replace this with a call to svc mgr.
return ServiceManager.Bookmarks as IDataStore;
}
return null;
}
}
public class SampleDataStore : IDataStore
{
private String mPrefix = "Goats";
private Hashtable mTargets = null;
private Hashtable mObservers = null;
public SampleDataStore()
{
mTargets = new Hashtable();
SetStuff();
}
public void AddObserver(IDataStoreObserver aObserver)
{
if (mObservers == null)
mObservers = new Hashtable();
mObservers.Add(aObserver.GetHashCode(), aObserver);
}
public void DoCommand(String aCommand, String aResourceID)
{
}
private void SetStuff()
{
CommandTarget tgt1 = new CommandTarget(mPrefix + "1", "1", "foopy1" as Object, false);
mTargets.Add(tgt1.GetHashCode(), tgt1);
CommandTarget tgt2 = new CommandTarget(mPrefix + "2", "2", "foopy2" as Object, false);
mTargets.Add(tgt2.GetHashCode(), tgt2);
CommandTarget tgt3 = new CommandTarget(mPrefix + "3", "3", "foopy3" as Object, false);
mTargets.Add(tgt3.GetHashCode(), tgt3);
CommandTarget tgt4 = new CommandTarget(mPrefix + "4", "4", "foopy4" as Object, false);
mTargets.Add(tgt4.GetHashCode(), tgt4);
}
public void ChangePrefix(String aPrefix)
{
/*
CommandTarget[] oldTargets = new CommandTarget[4];
mTargets.Values.CopyTo(oldTargets, 0);
mPrefix = aPrefix;
SetStuff();
IEnumerator targets = mTargets.Values.GetEnumerator();
int i = 0;
while (targets.MoveNext()) {
IEnumerator observers = mObservers.Values.GetEnumerator();
while (observers.MoveNext()) {
IDataStoreObserver idso = observers.Current as IDataStoreObserver;
idso.OnNodeChanged(oldTargets[i++], targets.Current as CommandTarget);
}
}
*/
}
public void RemoveOdd()
{
IEnumerator targets = mTargets.Values.GetEnumerator();
while (targets.MoveNext())
{
IEnumerator observers = mObservers.Values.GetEnumerator();
while (observers.MoveNext())
{
IDataStoreObserver idso = observers.Current as IDataStoreObserver;
CommandTarget current = targets.Current as CommandTarget;
if (Int32.Parse(current.AccessKey) % 2 != 0)
{
mTargets.Remove(current.Data.GetHashCode());
idso.OnNodeRemoved(targets.Current as CommandTarget);
}
}
}
}
public void AddItems()
{
CommandTarget tgt5 = new CommandTarget(mPrefix + "5", "5", "foopy5" as Object, false);
mTargets.Add(tgt5.GetHashCode(), tgt5);
CommandTarget tgt6 = new CommandTarget(mPrefix + "6", "6", "foopy6" as Object, false);
mTargets.Add(tgt6.GetHashCode(), tgt6);
}
public void GetElements(String aContainerID, out IEnumerator aElements)
{
switch (aContainerID)
{
case "root":
aElements = mTargets.Values.GetEnumerator();
break;
case "goats":
aElements = mTargets.Values.GetEnumerator();
break;
default:
aElements = mTargets.Values.GetEnumerator();
break;
}
}
}
}