intial source from ttp://www.sf.net/projects/wdte

[phpeclipse.git] / archive / net.sourceforge.phpeclipse.css.ui / src / net / sourceforge / phpeclipse / css / ui / internal / outline / CssOutlineContentProvider.java

diff --git a/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/outline/CssOutlineContentProvider.java b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/outline/CssOutlineContentProvider.java
new file mode 100644 (file)
index 0000000..1bd8b24
--- /dev/null
+++ b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/outline/CssOutlineContentProvider.java
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2003-2004 Christopher Lenz 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:
+ *     Christopher Lenz - initial API and implementation
+ * 
+ * $Id: CssOutlineContentProvider.java,v 1.1 2004-09-02 18:11:49 jsurfer Exp $
+ */
+
+package net.sourceforge.phpeclipse.css.ui.internal.outline;
+
+import net.sourceforge.phpeclipse.css.core.model.IRule;
+import net.sourceforge.phpeclipse.css.core.model.IStyleSheet;
+
+import org.eclipse.jface.viewers.ITreeContentProvider;
+import org.eclipse.jface.viewers.Viewer;
+
+/**
+ * Content provider for the CSS outline page.
+ */
+public class CssOutlineContentProvider implements ITreeContentProvider {
+
+       // Instance Variables ------------------------------------------------------
+
+       /**
+        * The parsed style sheet.
+        */
+       private IStyleSheet styleSheet;
+
+       // ITreeContentProvider Implementation -------------------------------------
+
+       /*
+        * ITreeContentProvider#getChildren(Object)
+        */
+       public Object[] getChildren(Object parentElement) {
+               if (parentElement instanceof IRule) {
+                       return ((IRule) parentElement).getChildren();
+               }
+               return new Object[0];
+       }
+
+       /*
+        * @see ITreeContentProvider#getParent(Object)
+        */
+       public Object getParent(Object element) {
+               if (element instanceof IRule) {
+                       return ((IRule) element).getParent();
+               }
+               return null;
+       }
+
+       /*
+        * @see ITreeContentProvider#hasChildren(Object)
+        */
+       public boolean hasChildren(Object element) {
+               return getChildren(element).length > 0;
+       }
+
+       /*
+        * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(Object)
+        */
+       public Object[] getElements(Object inputElement) {
+               if (styleSheet != null) {
+                       return styleSheet.getRules();
+               }
+               return new Object[0];
+       }
+
+       /*
+        * @see org.eclipse.jface.viewers.IContentProvider#dispose()
+        */
+       public void dispose() {
+               styleSheet = null;
+       }
+
+       /*
+        * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(Viewer, Object, Object)
+        */
+       public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
+               if (oldInput != newInput) {
+                       if (oldInput instanceof IStyleSheet) {
+                               styleSheet = null;
+                       }
+                       if (newInput instanceof IStyleSheet) {
+                               IStyleSheet newStyleSheet = (IStyleSheet) newInput;
+                               styleSheet = newStyleSheet;
+                       }          
+               }
+       }
+
+}