133 lines
4.8 KiB
Java
133 lines
4.8 KiB
Java
/*
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* AppleCommander - An Apple ][ image utility.
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* Copyright (C) 2002-2022 by Robert Greene
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* robgreene at users.sourceforge.net
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package com.webcodepro.applecommander.ui.swt.filteradapter;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.custom.StyleRange;
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import org.eclipse.swt.custom.StyledText;
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import org.eclipse.swt.graphics.Color;
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import org.eclipse.swt.graphics.Image;
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import org.eclipse.swt.graphics.Point;
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import com.webcodepro.applecommander.ui.swt.FileViewerWindow;
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import com.webcodepro.applecommander.ui.swt.util.contentadapter.StyledTextAdapter;
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import com.webcodepro.applecommander.util.ApplesoftToken;
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import com.webcodepro.applecommander.util.ApplesoftTokenizer;
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import org.eclipse.swt.widgets.Display;
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/**
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* Provides a view of a syntax-colored Applesoft program listing.
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*
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* @author Rob Greene
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*/
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public class ApplesoftFilterAdapter extends FilterAdapter {
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private StyledText styledText;
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private Color separatorColor;
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private Color stringColor;
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private Color tokenColor;
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public ApplesoftFilterAdapter(FileViewerWindow window, String text, String toolTipText, Image image) {
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super(window, text, toolTipText, image);
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}
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public void display() {
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if (styledText == null) {
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createStyledText();
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}
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Point size = styledText.computeSize(SWT.DEFAULT, SWT.DEFAULT, true);
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getComposite().setContent(styledText);
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getComposite().setExpandHorizontal(true);
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getComposite().setExpandVertical(true);
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getComposite().setMinWidth(size.x);
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getComposite().setMinHeight(size.y);
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getComposite().getContent().addListener(SWT.KeyUp, getToolbarCommandHandler());
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setContentTypeAdapter(new StyledTextAdapter(styledText, getFileEntry().getFilename()));
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}
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public void dispose() {
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styledText.dispose();
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separatorColor.dispose();
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tokenColor.dispose();
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stringColor.dispose();
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}
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protected void createStyledText() {
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if (Display.isSystemDarkTheme()) {
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separatorColor = new Color(getComposite().getDisplay(), 255, 128, 128);
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tokenColor = new Color(getComposite().getDisplay(), 192, 192, 255);
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stringColor = new Color(getComposite().getDisplay(), 128, 255, 128);
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} else {
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separatorColor = new Color(getComposite().getDisplay(), 192, 0, 0);
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tokenColor = new Color(getComposite().getDisplay(), 0, 0, 192);
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stringColor = new Color(getComposite().getDisplay(), 0, 192, 0);
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}
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styledText = new StyledText(getComposite(), SWT.NONE);
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styledText.setForeground(getComposite().getForeground());
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styledText.setFont(getCourierFont());
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styledText.setEditable(false);
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ApplesoftTokenizer tokenizer = new ApplesoftTokenizer(getFileEntry());
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boolean firstLine = true;
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while (tokenizer.hasMoreTokens()) {
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ApplesoftToken token = tokenizer.getNextToken();
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if (token == null) {
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continue; // should be end of program...
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} else if (token.isLineNumber()) {
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if (firstLine) {
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firstLine = false;
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} else {
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styledText.append("\n"); //$NON-NLS-1$
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}
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styledText.append(Integer.toString(token.getLineNumber()));
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styledText.append(" "); //$NON-NLS-1$
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} else if (token.isCommandSeparator() || token.isExpressionSeparator()) {
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int caretOffset = styledText.getCharCount();
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styledText.append(token.getStringValue());
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StyleRange styleRange = new StyleRange();
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styleRange.start = caretOffset;
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styleRange.length = token.getStringValue().length();
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styleRange.foreground = separatorColor;
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styledText.setStyleRange(styleRange);
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} else if (token.isEndOfCommand()) {
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styledText.append("\n"); //$NON-NLS-1$
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} else if (token.isString()) {
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int caretOffset = styledText.getCharCount();
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styledText.append(token.getStringValue());
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StyleRange styleRange = new StyleRange();
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styleRange.start = caretOffset;
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styleRange.length = token.getStringValue().length();
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styleRange.foreground = stringColor;
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styledText.setStyleRange(styleRange);
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} else if (token.isToken()) {
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int caretOffset = styledText.getCharCount();
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styledText.append(token.getTokenString());
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StyleRange styleRange = new StyleRange();
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styleRange.start = caretOffset;
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styleRange.length = token.getTokenString().length();
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styleRange.foreground = tokenColor;
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styledText.setStyleRange(styleRange);
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}
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}
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}
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}
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