mirror of
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322 lines
9.5 KiB
C#
322 lines
9.5 KiB
C#
/* -*- Mode: C#; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 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 Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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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 Manticore.
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*
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* The Initial Developer of the Original Code is
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* Silverstone Interactive.
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* Portions created by the Initial Developer are Copyright (C) 2001
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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>
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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 MPL, 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 MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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namespace Silverstone.Manticore.Core
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{
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using System;
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using System.Collections;
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using System.IO;
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using System.Xml;
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using System.Text;
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public class Preferences
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{
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XmlDocument mDefaultsDocument;
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XmlDocument mPrefsDocument;
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public Preferences()
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{
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mDefaultsDocument = new XmlDocument();
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mPrefsDocument = new XmlDocument();
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}
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public void InitializeDefaults()
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{
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// Do we ever want to support multiple defaults files? For now, no.
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// XXX need a better place for this file.
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ReadDocument(@"defaults\default-prefs.xml", mDefaultsDocument);
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}
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private void ReadDocument(String aFile, XmlDocument aDocument)
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{
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XmlTextReader reader = new XmlTextReader(aFile);
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reader.WhitespaceHandling = WhitespaceHandling.None;
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reader.MoveToContent();
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String xml = reader.ReadOuterXml();
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reader.Close();
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aDocument.LoadXml(xml);
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}
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// Called once at Startup
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public void LoadPreferencesFile(String aFile)
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{
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ReadDocument(aFile, mPrefsDocument);
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mPrefsDocument.NodeChanged += new XmlNodeChangedEventHandler(OnNodeChanged);
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mPrefsDocument.NodeRemoved += new XmlNodeChangedEventHandler(OnNodeRemoved);
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mPrefsDocument.NodeInserted += new XmlNodeChangedEventHandler(OnNodeInserted);
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}
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public void LoadUserPreferences()
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{
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String manticoreAppData = FileLocator.GetManticorePath("AppData");
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String prefPath = FileLocator.GetManticorePath("UserPrefs");
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try {
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LoadPreferencesFile(prefPath);
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}
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catch (XmlException) {
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// Something went wrong, we'll just assume a malformed or non-existant
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// preferences file, blow it away and insert a new one. Could potentially
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// be dangerous.
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try {
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File.Copy(@"defaults\user-prefs.xml", prefPath, true);
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}
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catch (DirectoryNotFoundException) {
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Directory.CreateDirectory(manticoreAppData);
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File.Copy(@"defaults\user-prefs.xml", prefPath, true);
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}
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LoadPreferencesFile(prefPath);
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}
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}
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public void FlushUserPreferences()
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{
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FlushPreferencesFile(FileLocator.GetManticorePath("UserPrefs"));
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}
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public void OnNodeChanged(object sender, XmlNodeChangedEventArgs e)
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{
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}
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public void OnNodeRemoved(object sender, XmlNodeChangedEventArgs e)
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{
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}
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public void OnNodeInserted(object sender, XmlNodeChangedEventArgs e)
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{
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}
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public void FlushPreferencesFile(String aFile)
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{
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UTF8Encoding enc = new UTF8Encoding();
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XmlTextWriter writer = new XmlTextWriter(aFile, enc);
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writer.Formatting = Formatting.Indented;
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mPrefsDocument.WriteTo(writer);
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writer.Flush();
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}
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//
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// The Manticore preferences file takes the following (XML) format:
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//
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// <preferences>
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// <foopy>
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// <noopy type="int" value="42">
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// <noo type="bool" value="true"/>
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// <goo type="string" value="goats"/>
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// </noopy>
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// </foopy>
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// </preferences>
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//
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// where this maps to preferences called:
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// foopy.noopy (int pref, value 42)
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// foopy.noopy.noo (bool pref, value true);
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// foopy.noopy.goo (string pref, value "goats");
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//
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private XmlElement CreateBranch(String aPrefName)
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{
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String[] names = aPrefName.Split('.');
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XmlElement elt = mPrefsDocument.DocumentElement;
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for (int i = 0; i < names.Length; ++i)
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elt = CreateBranch(names[i], elt);
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return elt;
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}
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private XmlElement CreateBranch(String aBranchName, XmlElement aRoot)
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{
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XmlElement elt = GetBranch(aBranchName, aRoot);
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if (elt == null) {
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elt = mPrefsDocument.CreateElement(aBranchName);
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aRoot.AppendChild(elt);
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}
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return elt;
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}
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private XmlElement GetBranchElement(String aBranchName)
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{
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String[] names = aBranchName.Split('.');
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XmlElement elt = mPrefsDocument.DocumentElement;
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for (int i = 0; i < names.Length && elt != null; ++i)
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elt = GetBranch(names[i], elt);
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// The preference wasn't found in the user preferences
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// file, look in the default preferences file.
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if (elt == null) {
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elt = mDefaultsDocument.DocumentElement;
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for (int i = 0; i < names.Length; ++i)
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elt = GetBranch(names[i], elt);
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}
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return elt;
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}
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private XmlElement GetBranch(String aBranchName, XmlElement aRoot)
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{
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// First, check to see if the specified root already has a branch
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// specified. If it exists, hand that root back.
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int childCount = aRoot.ChildNodes.Count;
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for (int i = 0; i < childCount; ++i) {
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if (aRoot.ChildNodes[i].LocalName == aBranchName)
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return aRoot.ChildNodes[i] as XmlElement;
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}
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return null;
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}
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public PrefBranch GetBranch(String aBranchName)
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{
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return new PrefBranch(aBranchName, GetBranchElement(aBranchName));
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}
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public void RemoveBranch(String aBranchName)
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{
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XmlElement elt = GetBranchElement(aBranchName);
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XmlNode parent = elt.ParentNode;
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parent.RemoveChild(elt);
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while (parent != null &&
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parent != (mPrefsDocument.DocumentElement as XmlNode)) {
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if (!parent.HasChildNodes) {
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parent.ParentNode.RemoveChild(parent);
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parent = parent.ParentNode;
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}
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else
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break;
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}
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}
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public bool GetBoolPref(String aPrefName)
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{
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XmlElement elt = GetBranchElement(aPrefName);
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return elt != null ? elt.GetAttribute("value") == "true" : false;
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}
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public void SetBoolPref(String aPrefName, bool aPrefValue)
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{
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XmlElement childElt = CreateBranch(aPrefName);
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if (childElt != null)
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childElt.SetAttribute("value", aPrefValue ? "true" : "false");
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}
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public void RemovePref(String aPrefName)
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{
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RemoveBranch(aPrefName);
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}
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public int GetIntPref(String aPrefName)
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{
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XmlElement elt = GetBranchElement(aPrefName);
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return elt != null ? Int32.Parse(elt.GetAttribute("value")) : 0;
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}
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public void SetIntPref(String aPrefName, int aPrefValue)
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{
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XmlElement elt = CreateBranch(aPrefName);
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if (elt != null) {
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Object o = aPrefValue;
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elt.SetAttribute("value", o.ToString());
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}
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}
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public String GetStringPref(String aPrefName)
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{
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XmlElement elt = GetBranchElement(aPrefName);
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return elt != null ? elt.GetAttribute("value") : "";
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}
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public void SetStringPref(String aPrefName, String aPrefValue)
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{
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XmlElement elt = CreateBranch(aPrefName);
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if (elt != null)
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elt.SetAttribute("value", aPrefValue);
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}
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public static String ResolvePref(XmlElement aElement)
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{
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String rv = aElement.LocalName;
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XmlElement temp = aElement;
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while (true) {
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temp = temp.ParentNode as XmlElement;
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if (temp == null || temp.LocalName == "preferences")
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break;
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rv = temp.LocalName + "." + rv;
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}
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return rv;
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}
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}
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public class PrefBranch : IEnumerator
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{
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//private XmlElement mRoot;
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private String mBranchName;
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private XmlElement mRoot;
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private XmlElement mCurrent = null;
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public PrefBranch(String aPrefBranchName, XmlElement aBranchRoot)
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{
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mBranchName = aPrefBranchName;
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mRoot = aBranchRoot;
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}
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public Object Current
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{
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get
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{
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return Preferences.ResolvePref(mCurrent) as Object;
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}
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}
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public bool MoveNext()
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{
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if (mCurrent != null)
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{
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if (mCurrent.NextSibling != null)
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mCurrent = mCurrent.NextSibling as XmlElement;
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else
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return false;
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}
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else
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mCurrent = mRoot.FirstChild as XmlElement;
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return true;
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}
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public void Reset()
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{
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mCurrent = mRoot.FirstChild as XmlElement;
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}
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}
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} |