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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/gtk/org/eclipse/swt/dnd/Clipboard.java')
| -rw-r--r-- | bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/gtk/org/eclipse/swt/dnd/Clipboard.java | 254 |
1 files changed, 0 insertions, 254 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/gtk/org/eclipse/swt/dnd/Clipboard.java b/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/gtk/org/eclipse/swt/dnd/Clipboard.java deleted file mode 100644 index 8c69b45971..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/gtk/org/eclipse/swt/dnd/Clipboard.java +++ /dev/null @@ -1,254 +0,0 @@ -package org.eclipse.swt.dnd; - -/* - * Copyright (c) 2000, 2002 IBM Corp. All rights reserved. - * This file is made available under the terms of the Common Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/cpl-v10.html - */ - -import org.eclipse.swt.SWT; -import org.eclipse.swt.internal.Converter; -import org.eclipse.swt.internal.gtk.GtkSelectionData; -import org.eclipse.swt.internal.gtk.OS; -import org.eclipse.swt.widgets.Display; - -/** - * The <code>Clipboard</code> provides a mechanism for transferring data from one - * application to another or within an application. - * - * <p>IMPORTANT: This class is <em>not</em> intended to be subclassed.</p> - */ -public class Clipboard { - - Display display; - int pGtkClipboard; - int pGtkPrimary; - -/** - * Constructs a new instance of this class. Creating an instance of a Clipboard - * may cause system resources to be allocated depending on the platform. It is therefore - * mandatory that the Clipboard instance be disposed when no longer required. - * - * @param display the display on which to allocate the clipboard - * - * @exception SWTException <ul> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> - * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> - * </ul> - * - * @see Clipboard#dispose - * @see Clipboard#checkSubclass - */ -public Clipboard(Display display) { - checkSubclass (); - if (display == null) { - display = Display.getCurrent(); - if (display == null) { - display = Display.getDefault(); - } - } - if (display.getThread() != Thread.currentThread()) { - SWT.error(SWT.ERROR_THREAD_INVALID_ACCESS); - } - this.display = display; - pGtkClipboard = OS.gtk_clipboard_get(OS.GDK_NONE); - byte[] buffer = Converter.wcsToMbcs(null, "PRIMARY", true); - int primary = OS.gdk_atom_intern(buffer, false); - pGtkPrimary = OS.gtk_clipboard_get(primary); -} - -/** - * Checks that this class can be subclassed. - * <p> - * The SWT class library is intended to be subclassed - * only at specific, controlled points. This method enforces this - * rule unless it is overridden. - * </p><p> - * <em>IMPORTANT:</em> By providing an implementation of this - * method that allows a subclass of a class which does not - * normally allow subclassing to be created, the implementer - * agrees to be fully responsible for the fact that any such - * subclass will likely fail between SWT releases and will be - * strongly platform specific. No support is provided for - * user-written classes which are implemented in this fashion. - * </p><p> - * The ability to subclass outside of the allowed SWT classes - * is intended purely to enable those not on the SWT development - * team to implement patches in order to get around specific - * limitations in advance of when those limitations can be - * addressed by the team. Subclassing should not be attempted - * without an intimate and detailed understanding of the hierarchy. - * </p> - * - * @exception SWTException <ul> - * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> - * </ul> - */ -protected void checkSubclass () { - String name = getClass().getName (); - String validName = Clipboard.class.getName(); - if (!validName.equals(name)) { - DND.error (SWT.ERROR_INVALID_SUBCLASS); - } -} - -/** - * Disposes of the operating system resources associated with the clipboard. - * The data will still be available on the system clipboard after the dispose - * method is called. - * - * <p>NOTE: On some platforms the data will not be available once the application - * has exited or the display has been disposed.</p> - */ -public void dispose () { - if (pGtkClipboard == 0) return; - pGtkClipboard = 0; - pGtkPrimary = 0; - display = null; -} - -/** - * Retrieve the data of the specified type currently available on the system clipboard. Refer to the - * specific subclass of <code>Tramsfer</code> to determine the type of object returned. - * - * <p>The following snippet shows text and RTF text being retrieved from the clipboard:</p> - * - * <code><pre> - * Clipboard clipboard = new Clipboard(display); - * TextTransfer textTransfer = TextTransfer.getInstance(); - * String textData = (String)clipboard.getContents(textTransfer); - * if (textData != null) System.out.println("Text is "+textData); - * RTFTransfer rtfTransfer = RTFTransfer.getInstance(); - * String rtfData = (String)clipboard.getContents(rtfTransfer); - * if (rtfData != null) System.out.println("RTF Text is "+rtfData); - * clipboard.dispose(); - * </code></pre> - * - * @see Transfer - * - * @param transfer the transfer agent for the type of data being requested - * - * @return the data obtained from the clipboard or null if no data of this type is available - */ -public Object getContents(Transfer transfer) { - if (transfer == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - int selection_data = 0; - int[] typeIds = transfer.getTypeIds(); - for (int i = 0; i < typeIds.length; i++) { - // try the primary selection first - selection_data = OS.gtk_clipboard_wait_for_contents(pGtkPrimary, typeIds[i]); - if( selection_data != 0) break; - }; - if (selection_data == 0) { - // try the clipboard selection second - for (int i = 0; i < typeIds.length; i++) { - selection_data = OS.gtk_clipboard_wait_for_contents(pGtkClipboard, typeIds[i]); - if( selection_data != 0) break; - }; - } - if (selection_data == 0) { - return null; // No data available for this transfer - } - - GtkSelectionData gtkSelectionData = new GtkSelectionData(); - OS.memmove(gtkSelectionData, selection_data, GtkSelectionData.sizeof); - TransferData tdata = new TransferData(); - tdata.type = gtkSelectionData.target; - tdata.pValue = gtkSelectionData.data; - tdata.length = gtkSelectionData.length; - tdata.format = gtkSelectionData.format; - Object result = transfer.nativeToJava(tdata); - OS.gtk_selection_data_free(selection_data); - return result; -} - -/** - * Place data of the specified type on the system clipboard. More than one type of - * data can be placed on the system clipboard at the same time. Setting the data - * clears any previous data of the same type from the system clipboard and also - * clears data of any other type currently on the system clipboard. - * - * <p>NOTE: On some platforms, the data is immediately copied to the system - * clipboard but on other platforms it is provided upon request. As a result, if the - * application modifes the data object it has set on the clipboard, that modification - * may or may not be available when the data is subsequently requested.</p> - * - * <p>The following snippet shows text and RTF text being set on the clipboard:</p> - * - * <code><pre> - * Clipboard clipboard = new Clipboard(display); - * String textData = "Hello World"; - * String rtfData = "{\\rtf1\\b\\i Hello World}"; - * TextTransfer textTransfer = TextTransfer.getInstance(); - * RTFTransfer rtfTransfer = RTFTransfer.getInstance(); - * clipboard.setContents(new Object[]{textData, rtfData}, new Transfer[]{textTransfer, rtfTransfer}); - * clipboard.dispose(); - * </code></pre> - * - * @param data the data to be set in the clipboard - * @param dataTypes the transfer agents that will convert the data to its platform - * specific format; each entry in the data array must have a corresponding dataType - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if data is null or datatypes is null - * or the length of data is not the same as the length of dataTypes</li> - * </ul> - * @exception SWTError <ul> - * <li>ERROR_CANNOT_SET_CLIPBOARD - if the clipboard is locked or - * otherwise unavailable</li> - * </ul> - */ -public void setContents(Object[] data, Transfer[] dataTypes){ - if (data == null || dataTypes == null || data.length != dataTypes.length) { - DND.error(SWT.ERROR_INVALID_ARGUMENT); - } - if (display.isDisposed() ) DND.error(DND.ERROR_CANNOT_SET_CLIPBOARD); - if (dataTypes.length == 0) return; - ClipboardProxy proxy = ClipboardProxy._getInstance(display); - if (!proxy.setData(data, dataTypes)) { - DND.error(DND.ERROR_CANNOT_SET_CLIPBOARD); - } -} - -/** - * Returns a platform specific list of the data types currently available on the - * system clipboard. - * - * <p>Note: <code>getAvailableTypeNames</code> is a utility for writing a Transfer - * sub-class. It should NOT be used within an application because it provides - * platform specific information.</p> - * - * @returns a platform specific list of the data types currently available on the - * system clipboard - */ -public String[] getAvailableTypeNames() { - byte[] buffer = Converter.wcsToMbcs(null, "TARGETS", true); - int typeId = OS.gdk_atom_intern(buffer, false); - // first try the primary clipboard - int selection_data = OS.gtk_clipboard_wait_for_contents(pGtkPrimary, typeId); - if (selection_data == 0) { - // try the clipboard selection second - selection_data = OS.gtk_clipboard_wait_for_contents(pGtkClipboard, typeId); - } - if (selection_data == 0) { - return new String[0]; // No types available - } - GtkSelectionData gtkSelectionData = new GtkSelectionData(); - OS.memmove(gtkSelectionData, selection_data, GtkSelectionData.sizeof); - if (gtkSelectionData.length == 0) return new String[0]; - int[] atoms = new int[gtkSelectionData.length * 8 / gtkSelectionData.format]; - OS.memmove(atoms, gtkSelectionData.data, gtkSelectionData.length); - String[] result = new String[atoms.length]; - for (int i = 0; i < atoms.length; i++) { - int pName = OS.gdk_atom_name(atoms[i]); - buffer = new byte [OS.strlen(pName)]; - OS.memmove (buffer, pName, buffer.length); - OS.g_free (pName); - result[i] = new String (Converter.mbcsToWcs (null, buffer)); - } - OS.gtk_selection_data_free(selection_data); - return result; -} -} - |