| // Copyright 2004, 2005 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry.html; |
| |
| import java.io.IOException; |
| import java.io.LineNumberReader; |
| import java.io.Reader; |
| import java.io.StringReader; |
| |
| import org.apache.hivemind.ApplicationRuntimeException; |
| import org.apache.tapestry.AbstractComponent; |
| import org.apache.tapestry.IMarkupWriter; |
| import org.apache.tapestry.IRequestCycle; |
| |
| /** |
| * Inserts formatted text (possibly collected using a {@link org.apache.tapestry.form.TextArea} |
| * component. [<a href="../../../../../ComponentReference/InsertText.html">Component Reference</a>] |
| * <p> |
| * To maintain the line breaks provided originally, this component will break the input into |
| * individual lines and insert additional HTML to make each line seperate. |
| * <p> |
| * This can be down more simply, using the <pre> HTML element, but that usually renders the |
| * text in a non-proportional font. |
| * |
| * @author Howard Lewis Ship |
| */ |
| |
| public abstract class InsertText extends AbstractComponent |
| { |
| protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle) |
| { |
| if (cycle.isRewinding()) |
| return; |
| |
| String value = getValue(); |
| |
| if (value == null) |
| return; |
| |
| StringReader reader = null; |
| LineNumberReader lineReader = null; |
| InsertTextMode mode = getMode(); |
| boolean raw = getRaw(); |
| |
| try |
| { |
| reader = new StringReader(value); |
| |
| lineReader = new LineNumberReader(reader); |
| |
| int lineNumber = 0; |
| |
| while (true) |
| { |
| String line = lineReader.readLine(); |
| |
| // Exit loop at end of file. |
| |
| if (line == null) |
| break; |
| |
| mode.writeLine(lineNumber, line, writer, raw); |
| |
| lineNumber++; |
| } |
| |
| } |
| catch (IOException ex) |
| { |
| throw new ApplicationRuntimeException(HTMLMessages.textConversionError(ex), this, null, |
| ex); |
| } |
| finally |
| { |
| close(lineReader); |
| close(reader); |
| } |
| |
| } |
| |
| private void close(Reader reader) |
| { |
| if (reader == null) |
| return; |
| |
| try |
| { |
| reader.close(); |
| } |
| catch (IOException e) |
| { |
| } |
| } |
| |
| /** Parameter */ |
| public abstract InsertTextMode getMode(); |
| |
| public abstract void setMode(InsertTextMode mode); |
| |
| /** Parameter */ |
| |
| public abstract String getValue(); |
| |
| /** Parameter */ |
| |
| public abstract boolean getRaw(); |
| |
| /** |
| * Sets the mode parameter property to its default, {@link InsertTextMode#BREAK}. |
| * |
| * @since 3.0 |
| */ |
| protected void finishLoad() |
| { |
| setMode(InsertTextMode.BREAK); |
| } |
| |
| } |