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[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpdt / internal / ui / viewsupport / DecoratingJavaLabelProvider.java

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/viewsupport/DecoratingJavaLabelProvider.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/viewsupport/DecoratingJavaLabelProvider.java
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+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/viewsupport/DecoratingJavaLabelProvider.java
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+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpdt.internal.ui.viewsupport;
+
+import net.sourceforge.phpdt.ui.OverrideIndicatorLabelDecorator;
+import net.sourceforge.phpdt.ui.ProblemsLabelDecorator;
+import net.sourceforge.phpeclipse.PHPeclipsePlugin;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.jface.viewers.DecoratingLabelProvider;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.ui.IDecoratorManager;
+import org.eclipse.ui.PlatformUI;
+
+
+/**
+ * Decorator prepared for the switch to use lightweight label decorators:
+ * uncomment the lbale decorator entries in plugin.xml and change
+ * USE_LIGHTWEIGHT to true.
+ * Certain views don't want problems or override indicators, so they signal this
+ * in the constructor. So on each getImage the corrsponding decorators are
+ * turned off and on again.
+  */
+public class DecoratingJavaLabelProvider extends DecoratingLabelProvider {
+
+       private static final boolean USE_LIGHTWEIGHT= false;
+       
+       private static final String PROBLEM_DECORATOR_ID= "net.sourceforge.phpdt.ui.problem.decorator"; //$NON-NLS-1$
+       private static final String OVERRIDE_DECORATOR_ID= "net.sourceforge.phpdt.ui.override.decorator"; //$NON-NLS-1$
+       
+       private boolean fUseErrorTick;
+       private boolean fUseOverride;
+
+       /**
+        * Decorating label provider for Java. Combines a JavaUILabelProvider
+        * with problem and override indicuator with the workbench decorator (label
+        * decorator extension point).
+        */
+       public DecoratingJavaLabelProvider(JavaUILabelProvider labelProvider) {
+               this(labelProvider, true, true);
+       }
+
+       /**
+        * Decorating label provider for Java. Combines a JavaUILabelProvider
+        * (if enabled with problem and override indicator) with the workbench
+        * decorator (label decorator extension point).
+        */
+       public DecoratingJavaLabelProvider(JavaUILabelProvider labelProvider, boolean errorTick, boolean override) {
+               super(labelProvider, PlatformUI.getWorkbench().getDecoratorManager().getLabelDecorator());
+               fUseErrorTick= errorTick;
+               fUseOverride= override;
+               if (!USE_LIGHTWEIGHT) {
+                       if (errorTick) {
+                               labelProvider.addLabelDecorator(new ProblemsLabelDecorator(null));
+                       }
+                       if (override) {
+                               labelProvider.addLabelDecorator(new OverrideIndicatorLabelDecorator(null));
+                       }
+               }
+       }
+
+       /* (non-Javadoc)
+        * @see org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object)
+        */
+       public Image getImage(Object element) {
+               if (USE_LIGHTWEIGHT) {
+                       IDecoratorManager manager= PlatformUI.getWorkbench().getDecoratorManager();
+                       
+                       boolean disableErrorTick= manager.getEnabled(PROBLEM_DECORATOR_ID) && !fUseErrorTick;
+                       boolean disableOverride= manager.getEnabled(OVERRIDE_DECORATOR_ID) && !fUseOverride;
+                       try {
+                               if (disableErrorTick) {
+                                       manager.setEnabled(PROBLEM_DECORATOR_ID, false);
+                               }
+                               if (disableOverride) {
+                                       manager.setEnabled(OVERRIDE_DECORATOR_ID, false);
+                               }
+                               Image image= super.getImage(element);
+                               if (disableErrorTick) {
+                                       manager.setEnabled(PROBLEM_DECORATOR_ID, true);
+                               }
+                               if (disableOverride) {
+                                       manager.setEnabled(OVERRIDE_DECORATOR_ID, true);
+                               }
+                               return image;
+                       } catch (CoreException e) {
+                               PHPeclipsePlugin.log(e);
+                       }
+               }
+               return super.getImage(element);
+       }
+
+       /* (non-Javadoc)
+        * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
+        */
+       public String getText(Object element) {
+               if (USE_LIGHTWEIGHT) {
+                       IDecoratorManager manager= PlatformUI.getWorkbench().getDecoratorManager();
+                       
+                       boolean disableErrorTick= manager.getEnabled(PROBLEM_DECORATOR_ID) && !fUseErrorTick;
+                       boolean disableOverride= manager.getEnabled(OVERRIDE_DECORATOR_ID) && !fUseOverride;
+                       try {
+                               if (disableErrorTick) {
+                                       manager.setEnabled(PROBLEM_DECORATOR_ID, false);
+                               }
+                               if (disableOverride) {
+                                       manager.setEnabled(OVERRIDE_DECORATOR_ID, false);
+                               }
+                               String text= super.getText(element);
+                               if (disableErrorTick) {
+                                       manager.setEnabled(PROBLEM_DECORATOR_ID, true);
+                               }
+                               if (disableOverride) {
+                                       manager.setEnabled(OVERRIDE_DECORATOR_ID, true);
+                               }
+                               return text;
+                       } catch (CoreException e) {
+                               PHPeclipsePlugin.log(e);
+                       }
+               }
+               return super.getText(element);
+       }
+
+}