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package org.apache.tapestry.components; |
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import java.io.IOException; |
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import java.io.LineNumberReader; |
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import java.io.Reader; |
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import java.io.StringReader; |
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import java.text.Format; |
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import org.apache.hivemind.ApplicationRuntimeException; |
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import org.apache.tapestry.AbstractComponent; |
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import org.apache.tapestry.IMarkupWriter; |
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import org.apache.tapestry.IRequestCycle; |
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public abstract class Insert extends AbstractComponent |
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{ |
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protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle) |
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{ |
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if (cycle.isRewinding()) |
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return; |
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Object value = getValue(); |
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if (value == null) |
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return; |
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String insert = null; |
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Format format = getFormat(); |
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if (format == null) |
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{ |
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insert = value.toString(); |
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} |
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else |
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{ |
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try |
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{ |
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insert = format.format(value); |
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} |
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catch (Exception ex) |
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{ |
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throw new ApplicationRuntimeException(ComponentMessages |
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.unableToFormat(this, value, ex), this, getBinding( |
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"format").getLocation(), ex); |
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} |
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} |
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boolean render = getRenderTag() || isParameterBound("class"); |
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if (render) { |
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writer.begin(getTemplateTagName()); |
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renderInformalParameters(writer, cycle); |
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} |
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printText(writer, cycle, insert); |
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if (render) { |
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writer.end(); |
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} |
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} |
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protected void printText(IMarkupWriter writer, IRequestCycle cycle, String value) |
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{ |
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if (getMode() == null) { |
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writer.print(value, getRaw()); |
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return; |
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} |
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StringReader reader = null; |
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LineNumberReader lineReader = null; |
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InsertMode mode = getMode(); |
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boolean raw = getRaw(); |
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try { |
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reader = new StringReader(value); |
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lineReader = new LineNumberReader(reader); |
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int lineNumber = 0; |
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while(true) { |
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String line = lineReader.readLine(); |
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if (line == null) |
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break; |
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mode.writeLine(lineNumber, line, writer, raw); |
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lineNumber++; |
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} |
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} catch (IOException ex) { |
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throw new ApplicationRuntimeException(ComponentMessages.textConversionError(ex), this, null, ex); |
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} finally { |
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close(lineReader); |
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close(reader); |
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} |
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} |
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private void close(Reader reader) |
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{ |
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if (reader == null) |
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return; |
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try |
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{ |
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reader.close(); |
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} catch (IOException e){} |
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} |
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public abstract Object getValue(); |
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public abstract Format getFormat(); |
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public abstract boolean getRaw(); |
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public abstract boolean getRenderTag(); |
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public abstract InsertMode getMode(); |
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} |