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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
TextToken.java | 85% | 83.7% | 71.4% | 82.9% |
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// Copyright 2004, 2005 The Apache Software Foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package org.apache.tapestry.parse;
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import org.apache.commons.lang.builder.ToStringBuilder;
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import org.apache.hivemind.Location;
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import org.apache.tapestry.IMarkupWriter;
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import org.apache.tapestry.IRender;
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import org.apache.tapestry.IRequestCycle;
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import org.apache.tapestry.Tapestry;
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/**
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* Represents static text in the template that may be passed through
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* to the client unchanged (except, perhaps, for the removal of
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* some whitespace).
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*
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* @see TokenType#TEXT
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* @author Howard Lewis Ship
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* @since 3.0
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*
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**/
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public class TextToken extends TemplateToken implements IRender |
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{ |
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private char[] _templateData; |
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private int _startIndex = -1; |
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private int _endIndex = -1; |
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private int _offset; |
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private int _length; |
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private boolean _needsTrim = true; |
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public TextToken(char[] templateData, int startIndex, int endIndex, Location location) |
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{ |
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super(TokenType.TEXT, location);
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if (startIndex < 0
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|| endIndex < 0 |
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|| startIndex > templateData.length |
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|| endIndex > templateData.length) |
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throw new IllegalArgumentException( |
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Tapestry.format( |
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"TextToken.range-error",
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this,
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Integer.toString(templateData.length))); |
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_templateData = templateData; |
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_startIndex = startIndex; |
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_endIndex = endIndex; |
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// Values actually used to render, may be adjusted to remove excess
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// leading and trailing whitespace.
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_offset = startIndex; |
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_length = endIndex - startIndex + 1; |
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} |
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public synchronized void render(IMarkupWriter writer, IRequestCycle cycle) |
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{ |
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if (_needsTrim)
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{ |
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trim(); |
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_needsTrim = false;
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} |
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if (_length == 0)
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return;
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// At one time, we would check to see if the cycle was rewinding and
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// only invoke printRaw() if it was. However, that slows down
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// normal rendering (microscopically) and, with the new
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// NullResponseWriter class, the "cost" of invoking cycle.isRewinding()
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// is approximately the same as the "cost" of invoking writer.printRaw().
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writer.printRaw(_templateData, _offset, _length); |
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} |
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/**
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* Strip off all leading and trailing whitespace by adjusting offset and length.
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*
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**/
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private void trim() |
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{ |
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if (_length == 0)
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return;
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try
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{ |
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boolean didTrim = false; |
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// Shave characters off the end until we hit a non-whitespace
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// character.
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while (_length > 0)
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{ |
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char ch = _templateData[_offset + _length - 1];
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if (!Character.isWhitespace(ch))
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break;
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_length--; |
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didTrim = true;
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} |
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// Restore one character of whitespace to the end
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if (didTrim)
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_length++; |
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didTrim = false;
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// Strip characters off the front until we hit a non-whitespace
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// character.
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while (_length > 0)
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{ |
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char ch = _templateData[_offset];
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if (!Character.isWhitespace(ch))
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break;
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_offset++; |
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_length--; |
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didTrim = true;
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} |
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// Again, restore one character of whitespace.
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if (didTrim)
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{ |
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_offset--; |
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_length++; |
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} |
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} |
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catch (IndexOutOfBoundsException ex)
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{ |
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throw new RuntimeException(Tapestry.format("TextToken.error-trimming", this)); |
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} |
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// Ok, this isn't perfect. I don't want to write into templateData[] even
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// though I'd prefer that my single character of whitespace was always a space.
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// It would also be kind of neat to shave whitespace within the static HTML, rather
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// than just on the edges.
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} |
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protected void extendDescription(ToStringBuilder builder) |
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{ |
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builder.append("startIndex", _startIndex);
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builder.append("endIndex", _endIndex);
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} |
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public int getEndIndex() |
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{ |
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return _endIndex;
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} |
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public int getStartIndex() |
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{ |
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return _startIndex;
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} |
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public char[] getTemplateData() |
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{ |
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return _templateData;
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} |
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} |
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