Mercurial > projects > dwt-linux
view dwt/dnd/URLTransfer.d @ 255:5a30aa9820f3
removed tango.stdc.stringz imports and allow null for arrays and string arguments.
author | Frank Benoit <benoit@tionex.de> |
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date | Sun, 15 Jun 2008 22:32:20 +0200 |
parents | ce446666f5a2 |
children | c0d810de7093 |
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/******************************************************************************* * Copyright (c) 2007 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ module dwt.dnd.URLTransfer; import dwt.internal.gtk.OS; import dwt.dnd.ByteArrayTransfer; import dwt.dnd.TransferData; import dwt.dnd.DND; import dwt.dwthelper.utils; /** * The class <code>URLTransfer</code> provides a platform specific mechanism * for converting text in URL format represented as a java <code>String</code> * to a platform specific representation of the data and vice versa. See * <code>Transfer</code> for additional information. The string * must be a fully specified url. * * <p>An example of a java <code>String[]</code> containing a URL is shown * below:</p> * * <code><pre> * String urlData = "http://www.eclipse.org"; * </code></pre> */ public class URLTransfer : ByteArrayTransfer { static URLTransfer _instance; private static const String TEXT_UNICODE = "text/unicode"; //$NON-NLS-1$ private static const String TEXT_XMOZURL = "text/x-moz-url"; //$NON-NLS-1$ private static int TEXT_UNICODE_ID; private static int TEXT_XMOZURL_ID; static this(){ TEXT_UNICODE_ID = registerType(TEXT_UNICODE); TEXT_XMOZURL_ID = registerType(TEXT_XMOZURL); _instance = new URLTransfer(); } private this() {} /** * Returns the singleton instance of the URLTransfer class. * * @return the singleton instance of the URLTransfer class */ public static URLTransfer getInstance () { return _instance; } /** * This implementation of <code>javaToNative</code> converts a URL * represented by a java <code>String</code> to a platform specific representation. * For additional information see <code>Transfer#javaToNative</code>. * * @param object a java <code>String</code> containing a URL * @param transferData an empty <code>TransferData</code> object; this * object will be filled in on return with the platform specific format of the data */ public void javaToNative (Object object, TransferData transferData){ transferData.result = 0; if (!checkURL(object) || !isSupportedType(transferData)) { DND.error(DND.ERROR_INVALID_DATA); } String string = (cast(ArrayWrapperString)object).array; char* pValue = cast(char*)OS.g_malloc(string.length+1); if (pValue is null) return; pValue[ 0 .. string.length ] = string[]; pValue[ string.length ] = '\0'; transferData.length = string.length; transferData.format = 8; transferData.pValue = pValue; transferData.result = 1; } /** * This implementation of <code>nativeToJava</code> converts a platform specific * representation of a URL <code>String</code>. * For additional information see <code>Transfer#nativeToJava</code>. * * @param transferData the platform specific representation of the data to be * converted * @return a java <code>String</code> containing a URL if the * conversion was successful; otherwise null */ public Object nativeToJava(TransferData transferData){ if (!isSupportedType(transferData) || transferData.pValue is null) return null; int size = (transferData.format * transferData.length / 8); if (size <= 0) return null; String string = fromStringz(cast(char*)transferData.pValue).dup; int end = string.indexOf('\0'); return new ArrayWrapperString((end is -1) ? string : string.substring(0, end)); } protected int[] getTypeIds(){ return [TEXT_XMOZURL_ID, TEXT_UNICODE_ID]; } protected String[] getTypeNames(){ return [TEXT_XMOZURL, TEXT_UNICODE]; } bool checkURL(Object object) { return object !is null && (null !is cast(ArrayWrapperString)object) && (cast(ArrayWrapperString)object).array.length > 0; } protected bool validate(Object object) { return checkURL(object); } }