net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/corext/textmanipulation/SimpleTextEdit.java

   1 /*
   2  * (c) Copyright IBM Corp. 2000, 2001.
   3  * All Rights Reserved.
   4  */
   5 package net.sourceforge.phpdt.internal.corext.textmanipulation;
   6
   7 import org.eclipse.core.runtime.CoreException;
   8
   9 //import org.eclipse.jdt.internal.corext.Assert;
  10
  11 public abstract class SimpleTextEdit extends TextEdit {
  12
  13         private TextRange fRange;
  14         private String fText;
  15
  16         public static SimpleTextEdit createReplace(int offset, int length, String text) {
  17                 return new SimpleTextEditImpl(offset, length, text);
  18         }
  19
  20         public static SimpleTextEdit createInsert(int offset, String text) {
  21                 return new SimpleTextEditImpl(offset, 0, text);
  22         }
  23
  24         public static SimpleTextEdit createDelete(int offset, int length) {
  25                 return new SimpleTextEditImpl(offset, length, ""); //$NON-NLS-1$
  26         }
  27
  28         private final static class SimpleTextEditImpl extends SimpleTextEdit {
  29                 protected SimpleTextEditImpl(TextRange range, String text) {
  30                         super(range, text);
  31                 }
  32                 protected SimpleTextEditImpl(int offset, int length, String text) {
  33                         super(offset, length, text);
  34                 }
  35                 public TextEdit copy() {
  36                         return new SimpleTextEditImpl(getTextRange().copy(), getText());
  37                 }
  38         }
  39
  40         protected SimpleTextEdit() {
  41                 this(TextRange.UNDEFINED, ""); //$NON-NLS-1$
  42         }
  43
  44         protected SimpleTextEdit(int offset, int length, String text) {
  45                 this(new TextRange(offset, length), text);
  46         }
  47         protected SimpleTextEdit(TextRange range, String text) {
  48         //      Assert.isNotNull(range);
  49         //      Assert.isNotNull(text);
  50                 fRange= range;
  51                 fText= text;
  52         }
  53
  54         /**
  55          * Returns the text edit's text
  56          *
  57          * @return the text edit's text
  58          */
  59         public String getText() {
  60                 return fText;
  61         }
  62
  63         /**
  64          * Sets the text edit's text
  65          * <p>
  66          * This method should only be called from within the <code>
  67          * connect</code> method.
  68          *
  69          * @param text the text edit's text
  70          */
  71         protected final void setText(String text) {
  72                 fText= text;
  73 //              Assert.isNotNull(fText);
  74         }
  75
  76         /**
  77          * Sets the text edit's range.
  78          * <p>
  79          * This method should only be called from within the <code>
  80          * connect</code> method.
  81          *
  82          * @param range the text edit's range.
  83          */
  84         protected void setTextRange(TextRange range) {
  85                 fRange= range;
  86         //      Assert.isNotNull(fRange);
  87         }
  88
  89         /* non Java-doc
  90          * @see TextEdit#getTextRange
  91          */
  92         public TextRange getTextRange() {
  93                 return fRange;
  94         }
  95
  96         /* non Java-doc
  97          * @see TextEdit#doPerform
  98          */
  99         public final TextEdit perform(TextBuffer buffer) throws CoreException {
 100                 String current= buffer.getContent(fRange.fOffset, fRange.fLength);
 101                 buffer.replace(fRange, fText);
 102                 return new SimpleTextEditImpl(fRange, current);
 103         }
 104 }
 105