Java tutorial
/** * This file Copyright (c) 2005-2008 Aptana, Inc. This program is * dual-licensed under both the Aptana Public License and the GNU General * Public license. You may elect to use one or the other of these licenses. * * This program is distributed in the hope that it will be useful, but * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or * NONINFRINGEMENT. Redistribution, except as permitted by whichever of * the GPL or APL you select, is prohibited. * * 1. For the GPL license (GPL), you can redistribute and/or modify this * program under the terms of the GNU General Public License, * Version 3, as published by the Free Software Foundation. You should * have received a copy of the GNU General Public License, Version 3 along * with this program; if not, write to the Free Software Foundation, Inc., 51 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Aptana provides a special exception to allow redistribution of this file * with certain Eclipse Public Licensed code and certain additional terms * pursuant to Section 7 of the GPL. You may view the exception and these * terms on the web at http://www.aptana.com/legal/gpl/. * * 2. For the Aptana Public License (APL), this program and the * accompanying materials are made available under the terms of the APL * v1.0 which accompanies this distribution, and is available at * http://www.aptana.com/legal/apl/. * * You may view the GPL, Aptana's exception and additional terms, and the * APL in the file titled license.html at the root of the corresponding * plugin containing this source file. * * Any modifications to this file must keep this entire header intact. */ package com.aptana.ide.editor.json.outline; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.swt.graphics.Image; import com.aptana.ide.editor.json.lexing.JSONTokenTypes; import com.aptana.ide.editor.json.parsing.nodes.JSONParseNode; import com.aptana.ide.editor.json.parsing.nodes.JSONParseNodeTypes; import com.aptana.ide.lexer.Lexeme; import com.aptana.ide.parsing.nodes.IParseNode; import com.aptana.ide.editor.json.Activator; /** * @author Kevin Lindsey */ public class JSONLabelProvider extends LabelProvider { private static final Image ARRAY_ICON = Activator.getImage("json/icons/array-literal.png"); //$NON-NLS-1$ private static final Image BOOLEAN_ICON = Activator.getImage("json/icons/boolean.png"); //$NON-NLS-1$ private static final Image NULL_ICON = Activator.getImage("json/icons/null.png"); //$NON-NLS-1$ private static final Image NUMBER_ICON = Activator.getImage("json/icons/number.png"); //$NON-NLS-1$ private static final Image OBJECT_ICON = Activator.getImage("json/icons/object-literal.png"); //$NON-NLS-1$ // private static final Image REFERENCE_ICON = Activator.getImage("json/icons/reference.png"); //$NON-NLS-1$ private static final Image STRING_ICON = Activator.getImage("json/icons/string.png"); //$NON-NLS-1$ /** * getImage * * @return Image */ public Image getImage(Object element) { Image result = null; if (element instanceof JSONParseNode) { IParseNode node = (IParseNode) element; switch (node.getTypeIndex()) { case JSONParseNodeTypes.ARRAY: result = ARRAY_ICON; break; case JSONParseNodeTypes.OBJECT: result = OBJECT_ICON; break; case JSONParseNodeTypes.NAME_VALUE_PAIR: IParseNode child = node.getChild(1); result = this.getImage(child); break; case JSONParseNodeTypes.SCALAR: Lexeme lexeme = node.getStartingLexeme(); switch (lexeme.typeIndex) { case JSONTokenTypes.FALSE: case JSONTokenTypes.TRUE: result = BOOLEAN_ICON; break; case JSONTokenTypes.NULL: result = NULL_ICON; break; case JSONTokenTypes.NUMBER: result = NUMBER_ICON; break; case JSONTokenTypes.REFERENCE: case JSONTokenTypes.PROPERTY: case JSONTokenTypes.STRING: result = STRING_ICON; break; } break; } } if (result == null) { result = super.getImage(element); } return result; } /** * getText * * @return String */ public String getText(Object element) { String result = null; if (element instanceof JSONParseNode) { IParseNode node = (IParseNode) element; switch (node.getTypeIndex()) { case JSONParseNodeTypes.ARRAY: result = "Array"; //$NON-NLS-1$ break; case JSONParseNodeTypes.OBJECT: result = "Object"; //$NON-NLS-1$ break; case JSONParseNodeTypes.NAME_VALUE_PAIR: String label = this.trimQuotes(node.getChild(0).getStartingLexeme().getText()); IParseNode child = node.getChild(1); int type = child.getTypeIndex(); if (type == JSONParseNodeTypes.ARRAY || type == JSONParseNodeTypes.OBJECT) { result = label; } else { result = label + " : " + this.getText(child); //$NON-NLS-1$ } break; case JSONParseNodeTypes.SCALAR: Lexeme lexeme = node.getStartingLexeme(); String text = lexeme.getText(); switch (lexeme.typeIndex) { case JSONTokenTypes.FALSE: case JSONTokenTypes.TRUE: case JSONTokenTypes.NULL: case JSONTokenTypes.NUMBER: result = text; break; case JSONTokenTypes.REFERENCE: case JSONTokenTypes.PROPERTY: case JSONTokenTypes.STRING: result = this.trimQuotes(text); break; } break; } } if (result == null) { result = super.getText(element); } return result; } private String trimQuotes(String text) { if (text.startsWith("\"") || text.startsWith("'")) //$NON-NLS-1$ //$NON-NLS-2$ { text = text.substring(1); } if (text.endsWith("\"") || text.endsWith("'")) //$NON-NLS-1$ //$NON-NLS-2$ { text = text.substring(0, text.length() - 1); } return text; } }