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/*******************************************************************************
* Copyright (c) 2011, 2014 Wind River Systems 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.dsf.debug.internal.ui.disassembly;
import org.eclipse.cdt.debug.internal.ui.disassembly.dsf.AddressRangePosition;
import org.eclipse.cdt.debug.internal.ui.disassembly.dsf.DisassemblyPosition;
import org.eclipse.cdt.dsf.debug.internal.ui.disassembly.model.DisassemblyDocument;
import org.eclipse.cdt.dsf.debug.internal.ui.disassembly.preferences.DisassemblyPreferenceConstants;
import org.eclipse.cdt.dsf.debug.internal.ui.disassembly.provisional.DisassemblyRulerColumn;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.util.PropertyChangeEvent;
/**
* A vertical ruler column to display the opcodes of instructions.
*/
public class OpcodeRulerColumn extends DisassemblyRulerColumn {
public static final String ID = "org.eclipse.cdt.dsf.ui.disassemblyColumn.opcode"; //$NON-NLS-1$
/** Maximum width of column (in characters) */
private static final int MAXWIDTH = 20;
private int fRadix;
private String fRadixPrefix;
/**
* Default constructor.
*/
public OpcodeRulerColumn() {
super();
setBackground(getColor(DisassemblyPreferenceConstants.RULER_BACKGROUND_COLOR));
setForeground(getColor(DisassemblyPreferenceConstants.CODE_BYTES_COLOR));
setRadix(getPreferenceStore().getInt(DisassemblyPreferenceConstants.OPCODE_RADIX));
}
public void setRadix(int radix) {
fRadix = radix;
setShowRadixPrefix();
}
public void setShowRadixPrefix() {
if (fRadix == 16) {
fRadixPrefix = "0x"; //$NON-NLS-1$
} else if (fRadix == 8) {
fRadixPrefix = "0"; //$NON-NLS-1$
} else {
fRadixPrefix = null;
}
}
/*
* @see org.eclipse.jface.text.source.LineNumberRulerColumn#createDisplayString(int)
*/
@Override
protected String createDisplayString(int line) {
int nChars = computeNumberOfCharacters();
if (nChars > 0) {
DisassemblyDocument doc = (DisassemblyDocument) getParentRuler().getTextViewer().getDocument();
try {
int offset = doc.getLineOffset(line);
AddressRangePosition pos = doc.getDisassemblyPosition(offset);
if (pos instanceof DisassemblyPosition && pos.length > 0 && pos.offset == offset && pos.fValid) {
DisassemblyPosition disassPos = (DisassemblyPosition) pos;
if (disassPos.fOpcodes != null) {
// Format the output.
String str = disassPos.fOpcodes.toString(fRadix);
int prefixLength = 0;
if (fRadixPrefix != null)
prefixLength = fRadixPrefix.length();
StringBuilder buf = new StringBuilder(nChars);
if (prefixLength != 0)
buf.append(fRadixPrefix);
for (int i = str.length() + prefixLength; i < nChars; ++i)
buf.append('0');
buf.append(str);
if (buf.length() > nChars)
buf.delete(nChars, buf.length());
return buf.toString();
}
} else if (pos != null && !pos.fValid) {
return DOTS.substring(0, nChars);
}
} catch (BadLocationException e) {
// silently ignored
}
}
return ""; //$NON-NLS-1$
}
@Override
protected int computeNumberOfCharacters() {
DisassemblyDocument doc = (DisassemblyDocument) getParentRuler().getTextViewer().getDocument();
return Math.min(MAXWIDTH, doc.getMaxOpcodeLength(fRadix));
}
@Override
public void propertyChange(PropertyChangeEvent event) {
String property = event.getProperty();
IPreferenceStore store = getPreferenceStore();
boolean needRedraw = false;
if (DisassemblyPreferenceConstants.CODE_BYTES_COLOR.equals(property)) {
setForeground(getColor(property));
needRedraw = true;
} else if (DisassemblyPreferenceConstants.OPCODE_RADIX.equals(property)) {
setRadix(store.getInt(property));
layout(false);
needRedraw = true;
} else if (DisassemblyPreferenceConstants.RULER_BACKGROUND_COLOR.equals(property)) {
setBackground(getColor(property));
needRedraw = true;
}
if (needRedraw) {
redraw();
}
}
}
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