| /******************************************************************************* |
| * Copyright (c) 2004, 2019 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Paul Pazderski - Bug 548356: Removed error prone handling of input content from input partition. |
| *******************************************************************************/ |
| package org.eclipse.ui.internal.console; |
| |
| import org.eclipse.jface.text.ITypedRegion; |
| import org.eclipse.swt.custom.StyleRange; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.ui.console.ConsolePlugin; |
| import org.eclipse.ui.console.IOConsoleInputStream; |
| import org.eclipse.ui.console.IOConsoleOutputStream; |
| |
| /** |
| * A region in an IOConsole's document. |
| * |
| * @since 3.1 |
| */ |
| public class IOConsolePartition implements ITypedRegion { |
| /** Type for input partitions. */ |
| public static final String OUTPUT_PARTITION_TYPE = ConsolePlugin.getUniqueIdentifier() + ".io_console_output_partition_type"; //$NON-NLS-1$ |
| /** Type for output partitions. */ |
| public static final String INPUT_PARTITION_TYPE = ConsolePlugin.getUniqueIdentifier() + ".io_console_input_partition_type"; //$NON-NLS-1$ |
| |
| private int offset; |
| private int length; |
| private String type; |
| |
| /** |
| * Output partitions are all read only. Input partitions are read only once they |
| * have been appended to the console's input stream. |
| */ |
| private boolean readOnly; |
| |
| /** |
| * Only one of inputStream or outputStream will be <code>null</code> depending |
| * on the partitions type. |
| */ |
| private IOConsoleOutputStream outputStream; |
| private IOConsoleInputStream inputStream; |
| |
| /** |
| * Partition of console output. |
| * |
| * @param offset offset where this partition starts |
| * @param outputStream source stream for this partition |
| */ |
| public IOConsolePartition(int offset, IOConsoleOutputStream outputStream) { |
| this.outputStream = outputStream; |
| this.offset = offset; |
| this.type = OUTPUT_PARTITION_TYPE; |
| this.readOnly = true; |
| } |
| |
| /** |
| * Partition of console input. |
| * |
| * @param offset offset where this partition starts |
| * @param inputStream source stream for this partition |
| */ |
| public IOConsolePartition(int offset, IOConsoleInputStream inputStream) { |
| this.inputStream = inputStream; |
| this.offset = offset; |
| this.type = INPUT_PARTITION_TYPE; |
| this.readOnly = false; |
| } |
| |
| /** |
| * Partition of console output. |
| * |
| * @param outputStream source stream for this partition |
| * @param length length of the partition |
| * @deprecated use {@link #IOConsolePartition(int, IOConsoleOutputStream)} and |
| * {@link #setLength(int)} instead |
| */ |
| @Deprecated |
| public IOConsolePartition(IOConsoleOutputStream outputStream, int length) { |
| this(0, outputStream); |
| setLength(length); |
| } |
| |
| /** |
| * Partition of console input. |
| * |
| * @param inputStream source stream for this partition |
| * @param text text of the input partition |
| * @deprecated use {@link #IOConsolePartition(int, IOConsoleInputStream)} and |
| * {@link #setLength(int)} instead. Also note: input partitions do |
| * not explicitly store the partitioned input anymore. Instead |
| * request the input from the partitioned document using input |
| * partition's offset and length. |
| */ |
| @Deprecated |
| public IOConsolePartition(IOConsoleInputStream inputStream, String text) { |
| this(0, inputStream); |
| setLength(text == null ? 0 : text.length()); |
| } |
| |
| @Override |
| public String getType() { |
| return type; |
| } |
| |
| @Override |
| public int getLength() { |
| return length; |
| } |
| |
| @Override |
| public int getOffset() { |
| return offset; |
| } |
| |
| /** |
| * Sets this partitions offset in the document. |
| * |
| * @param offset This partitions offset in the document. |
| */ |
| public void setOffset(int offset) { |
| this.offset = offset; |
| } |
| |
| /** |
| * Sets this partition's length. |
| * |
| * @param length new length of partition |
| */ |
| public void setLength(int length) { |
| this.length = length; |
| } |
| |
| /** |
| * Returns a StyleRange object which may be used for setting the style of this |
| * partition in a viewer. |
| * |
| * @param rangeOffset offset for the style range |
| * @param rangeLength length of style range |
| * @return style range for this partition |
| */ |
| public StyleRange getStyleRange(int rangeOffset, int rangeLength) { |
| return new StyleRange(rangeOffset, rangeLength, getColor(), null, getFontStyle()); |
| } |
| |
| /** |
| * Returns the font of the input stream if the type of the partition is |
| * <code>INPUT_PARTITION_TYPE</code>, otherwise it returns the output stream |
| * font |
| * |
| * @return the font of one of the backing streams |
| */ |
| private int getFontStyle() { |
| if (type.equals(INPUT_PARTITION_TYPE)) { |
| return inputStream != null ? inputStream.getFontStyle() : 0; |
| } |
| return outputStream.getFontStyle(); |
| } |
| |
| /** |
| * Returns the colour of the input stream if the type of the partition is |
| * <code>INPUT_PARTITION_TYPE</code>, otherwise it returns the output stream |
| * colour |
| * |
| * @return the colour of one of the backing streams |
| */ |
| public Color getColor() { |
| if (type.equals(INPUT_PARTITION_TYPE)) { |
| return inputStream != null ? inputStream.getColor() : null; |
| } |
| return outputStream.getColor(); |
| } |
| |
| /** |
| * Returns if this partition is read-only. |
| * |
| * @see org.eclipse.ui.console.IConsoleDocumentPartitioner#isReadOnly(int) |
| * @return if this partition is read-only |
| */ |
| public boolean isReadOnly() { |
| return readOnly; |
| } |
| |
| /** |
| * Sets the read-only state of this partition to <code>true</code>. |
| * |
| * @see org.eclipse.ui.console.IConsoleDocumentPartitioner#isReadOnly(int) |
| */ |
| public void setReadOnly() { |
| readOnly = true; |
| } |
| |
| /** |
| * Returns the underlying output stream. |
| * <p> |
| * Always <code>null</code> for input partitions. |
| * </p> |
| * |
| * @return the underlying output stream |
| * @deprecated use {@link #getOutputStream()} instead |
| */ |
| @Deprecated |
| IOConsoleOutputStream getStream() { |
| return outputStream; |
| } |
| |
| /** |
| * Returns the underlying output stream. |
| * <p> |
| * Always <code>null</code> for input partitions. |
| * </p> |
| * |
| * @return the underlying output stream |
| */ |
| IOConsoleOutputStream getOutputStream() { |
| return outputStream; |
| } |
| |
| /** |
| * Returns the underlying input stream. |
| * <p> |
| * Always <code>null</code> for output partitions. |
| * </p> |
| * |
| * @return the underlying input stream |
| */ |
| IOConsoleInputStream getInputStream() { |
| return inputStream; |
| } |
| |
| @Override |
| public String toString() { |
| final StringBuilder sb = new StringBuilder(40); |
| sb.append(INPUT_PARTITION_TYPE.equals(type) ? "[Input" : "[Output"); //$NON-NLS-1$ //$NON-NLS-2$ |
| if (!readOnly) { |
| sb.append("+"); //$NON-NLS-1$ |
| } |
| sb.append("]"); //$NON-NLS-1$ |
| sb.append(" Offset: "); //$NON-NLS-1$ |
| sb.append(offset); |
| sb.append(" Length: "); //$NON-NLS-1$ |
| sb.append(length); |
| return sb.toString(); |
| } |
| } |