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002: *
003: * Copyright (c) 2001-2007, JavaPLT group at Rice University (javaplt@rice.edu)
004: * All rights reserved.
005: *
006: * Redistribution and use in source and binary forms, with or without
007: * modification, are permitted provided that the following conditions are met:
008: * * Redistributions of source code must retain the above copyright
009: * notice, this list of conditions and the following disclaimer.
010: * * Redistributions in binary form must reproduce the above copyright
011: * notice, this list of conditions and the following disclaimer in the
012: * documentation and/or other materials provided with the distribution.
013: * * Neither the names of DrJava, the JavaPLT group, Rice University, nor the
014: * names of its contributors may be used to endorse or promote products
015: * derived from this software without specific prior written permission.
016: *
017: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
018: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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036:
037: package edu.rice.cs.drjava.model.definitions.indent;
038:
039: import edu.rice.cs.util.UnexpectedException;
040:
041: import edu.rice.cs.drjava.model.AbstractDJDocument;
042: import edu.rice.cs.drjava.model.definitions.reducedmodel.*;
043:
044: import javax.swing.text.BadLocationException;
045:
046: /**
047: * Indents the current line in the document to the indent level of the
048: * start of the contract or statement of the brace enclosing the start of the
049: * current line, plus the given suffix.
050: * @version $Id: ActionStartStmtOfBracePlus.java 4255 2007-08-28 19:17:37Z mgricken $
051: */
052: public class ActionStartStmtOfBracePlus extends IndentRuleAction {
053: private String _suffix;
054:
055: /**
056: * Constructs a new rule with the given suffix string.
057: * @param suffix String to append to indent level of brace
058: */
059: public ActionStartStmtOfBracePlus(String suffix) {
060: super ();
061: _suffix = suffix;
062: }
063:
064: /**
065: * Properly indents the line that the caret is currently on.
066: * Replaces all whitespace characters at the beginning of the
067: * line with the appropriate spacing or characters.
068: * @param doc AbstractDJDocument containing the line to be indented.
069: * @param reason The reason that the indentation is taking place
070: * @return true if the caller should update the current location itself,
071: * false if the indenter has already handled this
072: */
073: public boolean indentLine(AbstractDJDocument doc,
074: Indenter.IndentReason reason) {
075: boolean supResult = super .indentLine(doc, reason);
076: int pos = doc.getCurrentLocation();
077:
078: // Get distance to brace
079: IndentInfo info = doc.getIndentInformation();
080: int distToBrace = info.distToBrace;
081:
082: // If there is no brace, align to left margin
083: if (distToBrace == -1) {
084: doc.setTab(_suffix, pos);
085: return supResult;
086: }
087:
088: // Get the absolute position of the brace
089: int bracePos = pos - distToBrace;
090:
091: String indent = "";
092: try {
093: indent = doc.getIndentOfCurrStmt(bracePos);
094: } catch (BadLocationException e) {
095: // Should not happen
096: throw new UnexpectedException(e);
097: }
098: indent = indent + _suffix;
099:
100: doc.setTab(indent, pos);
101:
102: return supResult;
103: }
104:
105: }
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