From f34c344f008548906045be74eb656a177e561d7a Mon Sep 17 00:00:00 2001
From: Michael Scharf <Michael.Scharf@windriver.com>
Date: Mon, 11 Dec 2006 22:15:14 +0000
Subject: [PATCH] FIXED - bug 165984: [terminal] store view data in memento and
 not in dialog settings https://bugs.eclipse.org/bugs/show_bug.cgi?id=165984

---
 .../terminal/internal/view/SettingsStore.java | 84 +++++++++++++++++--
 .../terminal/internal/view/TerminalView.java  | 36 ++++----
 2 files changed, 93 insertions(+), 27 deletions(-)

diff --git a/terminal/org.eclipse.tm.terminal.view/src/org/eclipse/tm/terminal/internal/view/SettingsStore.java b/terminal/org.eclipse.tm.terminal.view/src/org/eclipse/tm/terminal/internal/view/SettingsStore.java
index 55a3b3d4011..7b53195e5d2 100644
--- a/terminal/org.eclipse.tm.terminal.view/src/org/eclipse/tm/terminal/internal/view/SettingsStore.java
+++ b/terminal/org.eclipse.tm.terminal.view/src/org/eclipse/tm/terminal/internal/view/SettingsStore.java
@@ -10,35 +10,101 @@
  *******************************************************************************/
 package org.eclipse.tm.terminal.internal.view;
 
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.tm.terminal.ISettingsStore;
+import org.eclipse.ui.IMemento;
 
 /**
  * A {@link IDialogSettings} based {@link ISettingsStore}.
  * 
+ * Setting Store dased on IMemento. IMemento documentations says only alpha numeric
+ * values mey be used as keys. Therefore the implementation converts dots (.) into
+ * child elements of the memento.
+ * 
  * @author Michael Scharf
  */
 class SettingsStore implements ISettingsStore {
-	final private IDialogSettings fDialogSettings;
-	final private String fPrefix;
-	public SettingsStore(String terminalPartName) {
-		fDialogSettings=TerminalViewPlugin.getDefault().getDialogSettings();
-		fPrefix=getClass().getName() + "." + terminalPartName + "."; //$NON-NLS-1$ //$NON-NLS-2$;
+	
+	private static final String KEYS = "_keys_";
+	final private Map fMap=new HashMap();
+	public SettingsStore(IMemento memento) {
+		if(memento==null)
+			return;
+		// load all keys ever used from the memento
+		String keys=memento.getString(KEYS);
+		if(keys!=null) {
+			String[] keyNames=keys.split(",");
+			for (int i = 0; i < keyNames.length; i++) {
+				String key=keyNames[i];
+				if(!KEYS.equals(key)) {
+					// get the dot separated elements
+					String[] path=key.split("\\.");
+					IMemento m=memento;
+					// iterate over all but the last segment and get the children...
+					for(int iPath=0; m!=null && iPath+1<path.length; iPath++) {
+						m=m.getChild(path[iPath]);
+					}
+					if(m!=null) {
+						// cache the value in the map
+						fMap.put(key,m.getString(path[path.length-1]));
+					}
+				}
+			}
+		}
 	}
 
 	public String get(String key) {
 		return get(key,null);
 	}
 	public String get(String key, String defaultValue) {
-		String value = fDialogSettings.get(fPrefix + key);
-
+		String value = (String) fMap.get(key);
 		if ((value == null) || (value.equals(""))) //$NON-NLS-1$
 			return defaultValue;
 
 		return value;
 	}
 
-	public void put(String key, String strValue) {
-		fDialogSettings.put(fPrefix + key , strValue);
+	public void put(String key, String value) {
+		if(!key.matches("^[\\w.]+$"))
+			throw new IllegalArgumentException("Key '"+key+"' is not alpha numeric or '.'!");
+		// null values remove the key from the map
+		if ((value == null) || (value.equals(""))) //$NON-NLS-1$
+			fMap.remove(key);
+		else
+			fMap.put(key, value);
+	}
+	/**
+	 * Save the state into memento.
+	 * @param memento
+	 */
+	public void saveState(IMemento memento) {
+		String[] keyNames=(String[]) fMap.keySet().toArray(new String[fMap.size()]);
+		Arrays.sort(keyNames);
+		StringBuffer buffer=new StringBuffer();
+		for (int i = 0; i < keyNames.length; i++) {
+			String key=keyNames[i];
+			String[] path=key.split("\\.");
+			IMemento m=memento;
+			// iterate over all but the last segment and get the children...
+			for(int iPath=0; iPath+1<path.length; iPath++) {
+				IMemento child=m.getChild(path[iPath]);
+				// if the child does not exist, create it
+				if(child==null)
+					child=m.createChild(path[iPath]);
+				m=child;
+			}
+			// use the last element in path as key of the child memento
+			m.putString(path[path.length], (String) fMap.get(key));
+			// construct the string for the keys
+			if(i>0)
+				buffer.append(",");
+			buffer.append(key);
+		}
+		// save the keys we have used.
+		memento.putString(KEYS, buffer.toString());
 	}
 }
diff --git a/terminal/org.eclipse.tm.terminal.view/src/org/eclipse/tm/terminal/internal/view/TerminalView.java b/terminal/org.eclipse.tm.terminal.view/src/org/eclipse/tm/terminal/internal/view/TerminalView.java
index 9f28f3ea597..985dc43bb31 100644
--- a/terminal/org.eclipse.tm.terminal.view/src/org/eclipse/tm/terminal/internal/view/TerminalView.java
+++ b/terminal/org.eclipse.tm.terminal.view/src/org/eclipse/tm/terminal/internal/view/TerminalView.java
@@ -53,6 +53,8 @@ import org.eclipse.tm.terminal.internal.actions.TerminalActionPaste;
 import org.eclipse.tm.terminal.internal.actions.TerminalActionSelectAll;
 import org.eclipse.tm.terminal.internal.actions.TerminalActionSettings;
 import org.eclipse.ui.IActionBars;
+import org.eclipse.ui.IMemento;
+import org.eclipse.ui.IViewSite;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchActionConstants;
 import org.eclipse.ui.IWorkbenchPage;
@@ -66,9 +68,6 @@ import org.eclipse.ui.part.ViewPart;
 
 public class TerminalView extends ViewPart implements ITerminalView, ITerminalListener {
     public static final String  FONT_DEFINITION = "terminal.views.view.font.definition"; //$NON-NLS-1$
-	protected static final String fSecondaryTerminalCountMutex = ""; //$NON-NLS-1$
-
-	protected static int fSecondaryTerminalCount = 0;
 
 	protected ITerminalViewControl fCtlTerminal;
 
@@ -96,7 +95,7 @@ public class TerminalView extends ViewPart implements ITerminalView, ITerminalLi
 
 	protected boolean fMenuAboutToShow;
 	
-	private ISettingsStore fStore;
+	private SettingsStore fStore;
 
 	/** Remember the item with which we contributed the shortcut to unregister them again! */
 	private IContextActivation fRememberedContextActivation;
@@ -214,7 +213,7 @@ public class TerminalView extends ViewPart implements ITerminalView, ITerminalLi
 
 		// When the settings dialog is closed, we persist the Terminal settings.
 
-		saveSettings();
+		saveSettings(dlgTerminalSettings.getConnector());
 		return dlgTerminalSettings.getConnector();
 	}
 
@@ -348,9 +347,7 @@ public class TerminalView extends ViewPart implements ITerminalView, ITerminalLi
 		IContextService ctxtService = (IContextService) getSite().getService(IContextService.class);
 		fRememberedContextActivation = ctxtService.activateContext("org.eclipse.tm.terminal.TerminalPreferencePage"); //$NON-NLS-1$
 
-		synchronized (fSecondaryTerminalCountMutex) {
-			setPartName(ViewMessages.PROP_TITLE + " " + fSecondaryTerminalCount++); //$NON-NLS-1$
-		}
+		setPartName(ViewMessages.PROP_TITLE);
 
 		setupControls(wndParent);
 		setupActions();
@@ -412,31 +409,34 @@ public class TerminalView extends ViewPart implements ITerminalView, ITerminalLi
 	protected void setupControls(Composite wndParent) {
 		ITerminalConnector[] connectors=TerminalConnectorExtension.getTerminalConnectors();
 		fCtlTerminal = TerminalViewControlFactory.makeControl(this, wndParent, connectors);
-		String connectionType=getStore().get("ConnectionType"); //$NON-NLS-1$
+		String connectionType=fStore.get("ConnectionType"); //$NON-NLS-1$
 		for (int i = 0; i < connectors.length; i++) {
 			connectors[i].load(getStore(connectors[i]));
 			if(connectors[i].getId().equals(connectionType))
 				fCtlTerminal.setConnector(connectors[i]);
 		}
 	}
-	private void saveSettings() {
+	private void saveSettings(ITerminalConnector connector) {
 		ITerminalConnector[] connectors=fCtlTerminal.getConnectors();
 		for (int i = 0; i < connectors.length; i++) {
 			connectors[i].save(getStore(connectors[i]));
 		}
-		if(fCtlTerminal.getTerminalConnection()!=null) {
-			getStore().put("ConnectionType",fCtlTerminal.getTerminalConnection().getId()); //$NON-NLS-1$
+		if(connector!=null) {
+			fStore.put("ConnectionType",connector.getId()); //$NON-NLS-1$
 		}
 	}
 	
-	private ISettingsStore getStore() {
-		if(fStore==null)
-			fStore=new SettingsStore(getPartName());
-		return fStore;
+	public void init(IViewSite site, IMemento memento) throws PartInitException {
+		super.init(site, memento);
+		fStore=new SettingsStore(memento);
+	}
+
+	public void saveState(IMemento memento) {
+		super.saveState(memento);
+		fStore.saveState(memento);
 	}
-	
 	private ISettingsStore getStore(ITerminalConnector connector) {
-		return new SettingStorePrefixDecorator(getStore(),connector.getClass().getName()+"."); //$NON-NLS-1$
+		return new SettingStorePrefixDecorator(fStore,connector.getClass().getName()+"."); //$NON-NLS-1$
 	}
 
 	protected void setupActions() {