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 / CssOutlineLabelProvider.java

diff --git a/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/outline/CssOutlineLabelProvider.java b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/outline/CssOutlineLabelProvider.java
new file mode 100644 (file)
index 0000000..a66c266
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+++ b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/outline/CssOutlineLabelProvider.java
@@ -0,0 +1,99 @@
+/*
+ * 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: CssOutlineLabelProvider.java,v 1.1 2004-09-02 18:11:49 jsurfer Exp $
+ */
+
+package net.sourceforge.phpeclipse.css.ui.internal.outline;
+
+import net.sourceforge.phpeclipse.core.model.ISourceReference;
+import net.sourceforge.phpeclipse.css.core.model.IAtRule;
+import net.sourceforge.phpeclipse.css.core.model.IStyleRule;
+import net.sourceforge.phpeclipse.css.ui.CssUI;
+
+import org.eclipse.jface.viewers.LabelProvider;
+import org.eclipse.swt.graphics.Image;
+
+/**
+ * Label provider for the CSS outline page.
+ */
+public class CssOutlineLabelProvider extends LabelProvider {
+
+       // LabelProvider Implementation --------------------------------------------
+
+       /**
+        * @see org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object)
+        */
+       public Image getImage(Object element) {
+               if (element instanceof IStyleRule) {
+                       return CssUI.getDefault().getImageRegistry().get(
+                               CssUI.ICON_STYLE_RULE);
+               } else if (element instanceof IAtRule) {
+                       return CssUI.getDefault().getImageRegistry().get(
+                               CssUI.ICON_AT_RULE);
+               }
+               return null;
+       }
+
+       /**
+        * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
+        */
+       public String getText(Object element) {
+               StringBuffer text = new StringBuffer();
+               if (element instanceof IStyleRule) {
+                       IStyleRule rule = (IStyleRule) element;
+                       ISourceReference selector = rule.getSelector();
+                       if (selector != null) {
+                               text.append(selector.getSource());
+                       }
+               } else if (element instanceof IAtRule) {
+                       IAtRule rule = (IAtRule) element;
+                       ISourceReference name = rule.getName();
+                       ISourceReference value = rule.getValue();
+                       if (name != null) {
+                               text.append(name.getSource());
+                               if (value != null) {
+                                       text.append(' ');
+                               }
+                       }
+                       if (value != null) {
+                               text.append(value.getSource());
+                       }
+               }
+               return normalizeWhitespace(text.toString());
+       }
+
+       // Private Methods ---------------------------------------------------------
+
+       /**
+        * Replaces all whitespace characters by regular spaces, and trims excessive
+        * whitespace down to at most one whitespace between non-whitespace
+        * characters.
+        * 
+        * @param text The text to normalize
+        * @return The normalized text
+        */
+       public String normalizeWhitespace(String text) {
+               StringBuffer buf = new StringBuffer();
+               boolean previousWasWhitespace = false;
+               for (int i = 0; i < text.length(); i++) {
+                       char c = text.charAt(i);
+                       if ((c == 9) || (c == 10) || (c == 13)) { // Tab
+                               c = ' ';
+                       }
+                       if ((c != ' ') || !previousWasWhitespace) {
+                               buf.append(c);
+                       }
+                       previousWasWhitespace = (c == ' ');
+               }
+               return buf.toString();
+       }
+
+}