Bug 228653 - Minor editor scalability improvements

core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/ASTProvider.java

@@ -269,7 +269,7 @@ public final class ASTProvider {
 	 * @return <code>true</code> if the given translation unit is the active one
 	 */
 	public boolean isActive(ITranslationUnit tu) {
-		return fCache.isActiveElement(tu);
+		return fCache.isActiveElement(tu) && tu.isOpen();
 	}
 
 	/**

core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CContentOutlinePage.java

@@ -13,8 +13,16 @@
  *******************************************************************************/
 package org.eclipse.cdt.internal.ui.editor;
 
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.custom.StackLayout;
+import org.eclipse.swt.layout.FillLayout;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Label;
 import org.eclipse.ui.actions.ActionGroup;
 
+import org.eclipse.cdt.core.model.ITranslationUnit;
+import org.eclipse.cdt.ui.PreferenceConstants;
 import org.eclipse.cdt.ui.actions.CustomFiltersActionGroup;
 import org.eclipse.cdt.ui.actions.MemberFilterActionGroup;
 import org.eclipse.cdt.ui.actions.OpenViewActionGroup;
@@ -28,6 +36,12 @@ import org.eclipse.cdt.internal.ui.search.actions.SelectionSearchGroup;
  */
 public class CContentOutlinePage extends AbstractCModelOutlinePage {
 	
+	private Composite fParent;
+	private StackLayout fStackLayout;
+	private Composite fOutlinePage;
+	private Control fStatusPage;
+	private boolean fScalabilityMode;
+
 	public CContentOutlinePage(CEditor editor) {
 		super("#TranslationUnitOutlinerContext", editor); //$NON-NLS-1$
 	}
@@ -40,6 +54,60 @@ public class CContentOutlinePage extends AbstractCModelOutlinePage {
 		return (CEditor)fEditor;
 	}
 
+	@Override
+	public void createControl(Composite parent) {
+		fParent = new Composite(parent, SWT.NONE);
+		fStackLayout = new StackLayout();
+		fParent.setLayout(fStackLayout);
+		fOutlinePage = new Composite(fParent, SWT.NONE);
+		fOutlinePage.setLayout(new FillLayout());
+		super.createControl(fOutlinePage);
+		fStatusPage = createStatusPage(fParent);
+		updateVisiblePage();
+	}
+
+	@Override
+	public Control getControl() {
+		return fParent;
+	}
+
+	private Control createStatusPage(Composite parent) {
+		Label label = new Label(parent, SWT.NONE);
+		label.setText(CEditorMessages.getString("Scalability.outlineDisabled")); //$NON-NLS-1$
+		return label;
+	}
+
+	@Override
+	public void setInput(ITranslationUnit unit) {
+		final CEditor editor= getEditor();
+		if (editor.isEnableScalablilityMode() 
+				&& PreferenceConstants.getPreferenceStore().getBoolean(PreferenceConstants.SCALABILITY_RECONCILER)) {
+			fScalabilityMode = true;
+			super.setInput(null);
+		} else {
+			fScalabilityMode = false;
+			super.setInput(unit);
+		}
+		updateVisiblePage();
+	}
+
+	private void updateVisiblePage() {
+		if (fStackLayout == null) {
+			return;
+		}
+		if (fScalabilityMode) {
+			if (fStackLayout.topControl != fStatusPage) {
+				fStackLayout.topControl = fStatusPage;
+				fParent.layout();
+			}
+		} else {
+			if (fStackLayout.topControl != fOutlinePage) {
+				fStackLayout.topControl = fOutlinePage;
+				fParent.layout();
+			}
+		}
+	}
+
 	@Override
 	protected SelectionSearchGroup createSearchActionGroup() {
 		return new SelectionSearchGroup(this);

core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CEditor.java

@@ -107,6 +107,7 @@ import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.search.ui.actions.TextSearchGroup;
 import org.eclipse.swt.SWT;
+import org.eclipse.swt.custom.BusyIndicator;
 import org.eclipse.swt.custom.ST;
 import org.eclipse.swt.custom.StyledText;
 import org.eclipse.swt.custom.VerifyKeyListener;
@@ -1290,20 +1291,27 @@ public class CEditor extends TextEditor implements ISelectionChangedListener, IC
 		if (!(sourceViewer instanceof ISourceViewerExtension2)) {
 			setPreferenceStore(createCombinedPreferenceStore(input));
 			internalDoSetInput(input);
+			updateScalabilityMode(input);
 			return;
 		}
 
+		getDocumentProvider().connect(input);
+		try {
 			// uninstall & unregister preference store listener
 			getSourceViewerDecorationSupport(sourceViewer).uninstall();
 			((ISourceViewerExtension2)sourceViewer).unconfigure();
 
 			setPreferenceStore(createCombinedPreferenceStore(input));
+			updateScalabilityMode(input);
 
 			// install & register preference store listener
 			sourceViewer.configure(getSourceViewerConfiguration());
 			getSourceViewerDecorationSupport(sourceViewer).install(getPreferenceStore());
 
 			internalDoSetInput(input);
+		} finally {
+			getDocumentProvider().disconnect(input);
+		}
 	}
 
 	private void internalDoSetInput(IEditorInput input) throws CoreException {
@@ -1333,12 +1341,13 @@ public class CEditor extends TextEditor implements ISelectionChangedListener, IC
 		} else {
 			fBracketMatcher.configure(null);
 		}
+	}
 
+	private void updateScalabilityMode(IEditorInput input) {
 		int lines = getDocumentProvider().getDocument(input).getNumberOfLines();
-		if (lines > getPreferenceStore().getInt(PreferenceConstants.SCALABILITY_NUMBER_OF_LINES)) {
+		boolean wasEnabled = fEnableScalablilityMode;
-			//Detecting if scalability mode should be turned on
+		fEnableScalablilityMode = lines > getPreferenceStore().getInt(PreferenceConstants.SCALABILITY_NUMBER_OF_LINES);
-			fEnableScalablilityMode = true;
+		if (fEnableScalablilityMode && !wasEnabled) {
-			
 			//Alert users that scalability mode should be turned on
 			if (getPreferenceStore().getBoolean(PreferenceConstants.SCALABILITY_ALERT)) {
 				MessageDialogWithToggle dialog = new MessageDialogWithToggle(
@@ -1412,8 +1421,6 @@ public class CEditor extends TextEditor implements ISelectionChangedListener, IC
      * @return Outline page.
 	 */
 	public CContentOutlinePage getOutlinePage() {
-		if (isEnableScalablilityMode() && getPreferenceStore().getBoolean(PreferenceConstants.SCALABILITY_RECONCILER))
-    		return null;
 		if (fOutlinePage == null) {
 			fOutlinePage = new CContentOutlinePage(this);
 			fOutlinePage.addSelectionChangedListener(this);
@@ -1494,7 +1501,7 @@ public class CEditor extends TextEditor implements ISelectionChangedListener, IC
 		}
 
 		try {
-			AdaptedSourceViewer asv = (AdaptedSourceViewer) getSourceViewer();
+			final AdaptedSourceViewer asv = (AdaptedSourceViewer) getSourceViewer();
 
 			if (asv != null) {
 
@@ -1529,12 +1536,14 @@ public class CEditor extends TextEditor implements ISelectionChangedListener, IC
 					} else {
 						removeActionActivationCode("IndentOnTab"); //$NON-NLS-1$
 					}
+					return;
 				}
 
 				if (TODO_TASK_TAGS.equals(event.getProperty())) {
 					ISourceViewer sourceViewer = getSourceViewer();
 					if (sourceViewer != null && affectsTextPresentation(event))
 						sourceViewer.invalidateTextPresentation();
+					return;
 				}
 
 				if (PreferenceConstants.EDITOR_FOLDING_PROVIDER.equals(property)) {
@@ -1595,8 +1604,13 @@ public class CEditor extends TextEditor implements ISelectionChangedListener, IC
 				if (isEnableScalablilityMode()) {
 					if (PreferenceConstants.SCALABILITY_RECONCILER.equals(property) ||
 							PreferenceConstants.SCALABILITY_SYNTAX_COLOR.equals(property)) {
+						BusyIndicator.showWhile(getSite().getShell().getDisplay(), new Runnable() {
+							public void run() {
+								setOutlinePageInput(fOutlinePage, getEditorInput());
 								asv.unconfigure();
 								asv.configure(getSourceViewerConfiguration());
+							}});
+						return;
 					}
 				}
 				

core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CEditorMessages.properties

@@ -23,6 +23,8 @@ AddIncludesOperation.description=Adding include statement
 Scalability.message=You are opening a large file.  Turning on scalability mode might help improve editor's performance.  Please see the Scalability preference page under Preferences > C/C++ > Editor.
 Scalability.info=Editor Scalability
 Scalability.reappear=Do not show this message again.
+Scalability.outlineDisabled=Outline is disabled due to scalability mode.
+
 ShowInCView.description=Show the current resource in the C/C++ Projects view
 ShowInCView.label=Show in C/C++ Projects
 ShowInCView.tooltip=Show current resource in C/C++ Projects view

core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/asm/AsmCodeScanner.java

@@ -19,7 +19,6 @@ import java.util.List;
 import org.eclipse.jface.text.rules.EndOfLineRule;
 import org.eclipse.jface.text.rules.IRule;
 import org.eclipse.jface.text.rules.IToken;
-import org.eclipse.jface.text.rules.WhitespaceRule;
 import org.eclipse.jface.text.rules.WordPatternRule;
 import org.eclipse.jface.text.rules.WordRule;
 
@@ -27,8 +26,8 @@ import org.eclipse.cdt.core.model.IAsmLanguage;
 import org.eclipse.cdt.ui.text.ITokenStoreFactory;
 
 import org.eclipse.cdt.internal.ui.text.AbstractCScanner;
+import org.eclipse.cdt.internal.ui.text.CWhitespaceRule;
 import org.eclipse.cdt.internal.ui.text.ICColorConstants;
-import org.eclipse.cdt.internal.ui.text.util.CWhitespaceDetector;
 
 
 /*
@@ -66,11 +65,11 @@ public final class AsmCodeScanner extends AbstractCScanner {
 			rules.add(new EndOfLineRule(new String(new char [] {lineCommentChars[i]}), token));
 		}
 
-		// Add generic whitespace rule.
-		rules.add(new WhitespaceRule(new CWhitespaceDetector()));
-
 		final IToken other= getToken(ICColorConstants.C_DEFAULT);		
 
+		// Add generic whitespace rule.
+		rules.add(new CWhitespaceRule(other));
+
 		// Add rule for labels
 		token= getToken(ICColorConstants.ASM_LABEL);
 		IRule labelRule= new AsmLabelRule(new AsmWordDetector(false), token, other);

core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/asm/AsmPreprocessorScanner.java

@@ -18,16 +18,14 @@ import org.eclipse.core.runtime.Assert;
 import org.eclipse.jface.text.rules.EndOfLineRule;
 import org.eclipse.jface.text.rules.IRule;
 import org.eclipse.jface.text.rules.IToken;
-import org.eclipse.jface.text.rules.WhitespaceRule;
-
 import org.eclipse.cdt.core.model.IAsmLanguage;
 import org.eclipse.cdt.ui.text.ITokenStoreFactory;
 
 import org.eclipse.cdt.internal.ui.text.AbstractCScanner;
 import org.eclipse.cdt.internal.ui.text.CHeaderRule;
+import org.eclipse.cdt.internal.ui.text.CWhitespaceRule;
 import org.eclipse.cdt.internal.ui.text.ICColorConstants;
 import org.eclipse.cdt.internal.ui.text.PreprocessorRule;
-import org.eclipse.cdt.internal.ui.text.util.CWhitespaceDetector;
 import org.eclipse.cdt.internal.ui.text.util.CWordDetector;
 
 /**
@@ -69,7 +67,7 @@ public class AsmPreprocessorScanner extends AbstractCScanner {
 		IToken token;
 
 		// Add generic white space rule.
-		rules.add(new WhitespaceRule(new CWhitespaceDetector()));
+		rules.add(new CWhitespaceRule(defaultToken));
 
 		token= getToken(ICColorConstants.PP_DIRECTIVE);
 		PreprocessorRule preprocessorRule= new PreprocessorRule(new CWordDetector(), defaultToken, getToken(ICColorConstants.C_SINGLE_LINE_COMMENT));

core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/text/CCodeScanner.java

@@ -18,13 +18,11 @@ import java.util.List;
 
 import org.eclipse.jface.text.rules.IRule;
 import org.eclipse.jface.text.rules.IToken;
-import org.eclipse.jface.text.rules.WhitespaceRule;
 import org.eclipse.jface.text.rules.WordRule;
 
 import org.eclipse.cdt.core.model.ICLanguageKeywords;
 import org.eclipse.cdt.ui.text.ITokenStoreFactory;
 
-import org.eclipse.cdt.internal.ui.text.util.CWhitespaceDetector;
 import org.eclipse.cdt.internal.ui.text.util.CWordDetector;
 
 
@@ -63,11 +61,12 @@ public final class CCodeScanner extends AbstractCScanner {
 		List<IRule> rules= new ArrayList<IRule>();		
 		IToken token;
 		
+		token= getToken(ICColorConstants.C_DEFAULT);
+
 		// Add generic white space rule.
-		rules.add(new WhitespaceRule(new CWhitespaceDetector()));
+		rules.add(new CWhitespaceRule(token));
 
 		// Add word rule for keywords, types, and constants.
-		token= getToken(ICColorConstants.C_DEFAULT);
 		WordRule wordRule= new WordRule(new CWordDetector(), token);
 		
 		token= getToken(ICColorConstants.C_KEYWORD);

core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/text/CPreprocessorScanner.java

@@ -17,13 +17,11 @@ import java.util.List;
 import org.eclipse.jface.text.rules.IRule;
 import org.eclipse.jface.text.rules.IToken;
 import org.eclipse.jface.text.rules.PatternRule;
-import org.eclipse.jface.text.rules.WhitespaceRule;
 import org.eclipse.jface.text.rules.WordRule;
 
 import org.eclipse.cdt.core.model.ICLanguageKeywords;
 import org.eclipse.cdt.ui.text.ITokenStoreFactory;
 
-import org.eclipse.cdt.internal.ui.text.util.CWhitespaceDetector;
 import org.eclipse.cdt.internal.ui.text.util.CWordDetector;
 
 /**
@@ -64,7 +62,7 @@ public class CPreprocessorScanner extends AbstractCScanner {
 		IToken token;
 		
 		// Add generic white space rule.
-		rules.add(new WhitespaceRule(new CWhitespaceDetector()));
+		rules.add(new CWhitespaceRule(defaultToken));
 		
 		token= getToken(ICColorConstants.PP_DIRECTIVE);
 		PreprocessorRule preprocessorRule = new PreprocessorRule(new CWordDetector(), defaultToken);

core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/text/CWhitespaceRule.java

@@ -0,0 +1,37 @@
+/*******************************************************************************
+ * Copyright (c) 2008 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Wind River Systems - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.internal.ui.text;
+
+import org.eclipse.jface.text.rules.IToken;
+
+/**
+ * A simple whitespace rule with configurable token.
+ */
+public class CWhitespaceRule extends SingleCharRule {
+
+	public CWhitespaceRule(IToken token) {
+		super(token);
+	}
+
+	@Override
+	protected boolean isRuleChar(int ch) {
+		switch (ch) {
+		case ' ':
+		case '\t':
+		case '\r':
+		case '\n':
+			return true;
+		default:
+			return false;
+		}
+	}
+
+}

core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/text/c/hover/CMacroExpansionInput.java

@@ -41,6 +41,7 @@ import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
 import org.eclipse.cdt.core.dom.ast.IBinding;
 import org.eclipse.cdt.core.dom.ast.IMacroBinding;
 import org.eclipse.cdt.core.dom.rewrite.MacroExpansionExplorer;
+import org.eclipse.cdt.core.model.CModelException;
 import org.eclipse.cdt.core.model.ILanguage;
 import org.eclipse.cdt.core.model.ITranslationUnit;
 import org.eclipse.cdt.core.model.IWorkingCopy;
@@ -251,7 +252,11 @@ public class CMacroExpansionInput {
 		IEditorInput editorInput= editor.getEditorInput();
 		IWorkingCopyManager manager= CUIPlugin.getDefault().getWorkingCopyManager();
 		IWorkingCopy tu = manager.getWorkingCopy(editorInput);
-		if (tu == null) {
+		try {
+			if (tu == null || !tu.isConsistent()) {
+				return null;
+			}
+		} catch (CModelException exc) {
 			return null;
 		}
 		

core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/text/c/hover/CSourceHover.java

@@ -606,7 +606,11 @@ public class CSourceHover extends AbstractCEditorTextHover {
 			IEditorInput input= editor.getEditorInput();
 			IWorkingCopyManager manager= CUIPlugin.getDefault().getWorkingCopyManager();				
 			IWorkingCopy copy = manager.getWorkingCopy(input);
-			if (copy == null) {
+			try {
+				if (copy == null || !copy.isConsistent()) {
+					return null;
+				}
+			} catch (CModelException exc) {
 				return null;
 			}
 			

core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/text/util/CWhitespaceDetector.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2006 IBM Corporation and others.
+ * Copyright (c) 2000, 2008 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -31,7 +31,7 @@ public class CWhitespaceDetector implements IWhitespaceDetector {
 		case '\n':
 			return true;
 		default:
-			return Character.isWhitespace(c);
+			return false;
 		}
 	}
 }