| /******************************************************************************* |
| * Copyright (c) 2000, 2019 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.dnd; |
| |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.gtk.*; |
| import org.eclipse.swt.widgets.*; |
| |
| /** |
| * 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> |
| * |
| * @see <a href="http://www.eclipse.org/swt/snippets/#clipboard">Clipboard snippets</a> |
| * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ClipboardExample</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| * @noextend This class is not intended to be subclassed by clients. |
| */ |
| public class Clipboard { |
| |
| private Display display; |
| |
| static long GTKCLIPBOARD; |
| static long GTKPRIMARYCLIPBOARD; |
| private static long TARGET; |
| |
| static { |
| GTKCLIPBOARD = GTK.GTK4 ? GDK.gdk_display_get_clipboard(GDK.gdk_display_get_default()) : GTK.gtk_clipboard_get (GDK.GDK_NONE); |
| byte[] buffer = Converter.wcsToMbcs("PRIMARY", true); |
| long primary = GDK.gdk_atom_intern(buffer, false); |
| GTKPRIMARYCLIPBOARD = GTK.GTK4 ? GDK.gdk_display_get_primary_clipboard(GDK.gdk_display_get_default()) : GTK.gtk_clipboard_get(primary); |
| buffer = Converter.wcsToMbcs("TARGETS", true); |
| TARGET = GDK.gdk_atom_intern(buffer, false); |
| } |
| |
| /** |
| * 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()) { |
| DND.error(SWT.ERROR_THREAD_INVALID_ACCESS); |
| } |
| this.display = display; |
| } |
| |
| /** |
| * 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); |
| } |
| } |
| /** |
| * Throws an <code>SWTException</code> if the receiver can not |
| * be accessed by the caller. This may include both checks on |
| * the state of the receiver and more generally on the entire |
| * execution context. This method <em>should</em> be called by |
| * widget implementors to enforce the standard SWT invariants. |
| * <p> |
| * Currently, it is an error to invoke any method (other than |
| * <code>isDisposed()</code>) on a widget that has had its |
| * <code>dispose()</code> method called. It is also an error |
| * to call widget methods from any thread that is different |
| * from the thread that created the widget. |
| * </p><p> |
| * In future releases of SWT, there may be more or fewer error |
| * checks and exceptions may be thrown for different reasons. |
| * </p> |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| protected void checkWidget () { |
| Display display = this.display; |
| if (display == null) DND.error (SWT.ERROR_WIDGET_DISPOSED); |
| if (display.getThread() != Thread.currentThread ()) DND.error (SWT.ERROR_THREAD_INVALID_ACCESS); |
| if (display.isDisposed()) DND.error(SWT.ERROR_WIDGET_DISPOSED); |
| } |
| |
| /** |
| * If this clipboard is currently the owner of the data on the system clipboard, |
| * clear the contents. If this clipboard is not the owner, then nothing is done. |
| * Note that there are clipboard assistant applications that take ownership of |
| * data or make copies of data when it is placed on the clipboard. In these |
| * cases, it may not be possible to clear the clipboard. |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.1 |
| */ |
| public void clearContents() { |
| clearContents(DND.CLIPBOARD); |
| } |
| |
| /** |
| * If this clipboard is currently the owner of the data on the specified |
| * clipboard, clear the contents. If this clipboard is not the owner, then |
| * nothing is done. |
| * |
| * <p>Note that there are clipboard assistant applications that take ownership |
| * of data or make copies of data when it is placed on the clipboard. In these |
| * cases, it may not be possible to clear the clipboard.</p> |
| * |
| * <p>The clipboards value is either one of the clipboard constants defined in |
| * class <code>DND</code>, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>DND</code> clipboard constants.</p> |
| * |
| * @param clipboards to be cleared |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see DND#CLIPBOARD |
| * @see DND#SELECTION_CLIPBOARD |
| * |
| * @since 3.1 |
| */ |
| public void clearContents(int clipboards) { |
| checkWidget(); |
| ClipboardProxy proxy = ClipboardProxy._getInstance(display); |
| proxy.clear(this, clipboards); |
| } |
| |
| /** |
| * 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> |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * </ul> |
| */ |
| public void dispose () { |
| if (isDisposed()) return; |
| if (display.getThread() != Thread.currentThread()) DND.error(SWT.ERROR_THREAD_INVALID_ACCESS); |
| display = null; |
| } |
| |
| /** |
| * Retrieve the data of the specified type currently available on the system |
| * clipboard. Refer to the specific subclass of <code>Transfer</code> to |
| * determine the type of object returned. |
| * |
| * <p>The following snippet shows text and RTF text being retrieved from the |
| * clipboard:</p> |
| * |
| * <pre><code> |
| * 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> |
| * |
| * @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 |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if transfer is null</li> |
| * </ul> |
| * |
| * @see Transfer |
| */ |
| public Object getContents(Transfer transfer) { |
| return getContents(transfer, DND.CLIPBOARD); |
| } |
| |
| /** |
| * Retrieve the data of the specified type currently available on the specified |
| * clipboard. Refer to the specific subclass of <code>Transfer</code> to |
| * determine the type of object returned. |
| * |
| * <p>The following snippet shows text and RTF text being retrieved from the |
| * clipboard:</p> |
| * |
| * <pre><code> |
| * 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, DND.CLIPBOARD); |
| * if (rtfData != null) System.out.println("RTF Text is "+rtfData); |
| * clipboard.dispose(); |
| * </code></pre> |
| * |
| * <p>The clipboards value is either one of the clipboard constants defined in |
| * class <code>DND</code>, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>DND</code> clipboard constants.</p> |
| * |
| * @param transfer the transfer agent for the type of data being requested |
| * @param clipboards on which to look for data |
| * |
| * @return the data obtained from the clipboard or null if no data of this type is available |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if transfer is null</li> |
| * </ul> |
| * |
| * @see Transfer |
| * @see DND#CLIPBOARD |
| * @see DND#SELECTION_CLIPBOARD |
| * |
| * @since 3.1 |
| */ |
| public Object getContents(Transfer transfer, int clipboards) { |
| checkWidget(); |
| if (transfer == null) DND.error(SWT.ERROR_NULL_ARGUMENT); |
| long selection_data = 0; |
| int[] typeIds = transfer.getTypeIds(); |
| for (int i = 0; i < typeIds.length; i++) { |
| if ((clipboards & DND.CLIPBOARD) != 0) { |
| selection_data = gtk_clipboard_wait_for_contents(GTKCLIPBOARD, typeIds[i]); |
| } |
| if (selection_data != 0) break; |
| if ((clipboards & DND.SELECTION_CLIPBOARD) != 0) { |
| selection_data = gtk_clipboard_wait_for_contents(GTKPRIMARYCLIPBOARD, typeIds[i]); |
| } |
| } |
| if (selection_data == 0) return null; |
| TransferData tdata = new TransferData(); |
| tdata.type = GTK.gtk_selection_data_get_data_type(selection_data); |
| tdata.pValue = GTK.gtk_selection_data_get_data(selection_data); |
| tdata.length = GTK.gtk_selection_data_get_length(selection_data); |
| tdata.format = GTK.gtk_selection_data_get_format(selection_data); |
| Object result = transfer.nativeToJava(tdata); |
| GTK.gtk_selection_data_free(selection_data); |
| return result; |
| } |
| |
| /** |
| * Returns <code>true</code> if the clipboard has been disposed, |
| * and <code>false</code> otherwise. |
| * <p> |
| * This method gets the dispose state for the clipboard. |
| * When a clipboard has been disposed, it is an error to |
| * invoke any other method using the clipboard. |
| * </p> |
| * |
| * @return <code>true</code> when the widget is disposed and <code>false</code> otherwise |
| * |
| * @since 3.0 |
| */ |
| public boolean isDisposed () { |
| return (display == null); |
| } |
| |
| /** |
| * 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 from the system clipboard, regardless of type. |
| * |
| * <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 modifies 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 copy/paste |
| * clipboard: |
| * </p> |
| * |
| * <pre><code> |
| * Clipboard clipboard = new Clipboard(display); |
| * String textData = "Hello World"; |
| * String rtfData = "{\\rtf1\\b\\i Hello World}"; |
| * TextTransfer textTransfer = TextTransfer.getInstance(); |
| * RTFTransfer rtfTransfer = RTFTransfer.getInstance(); |
| * Transfer[] transfers = new Transfer[]{textTransfer, rtfTransfer}; |
| * Object[] data = new Object[]{textData, rtfData}; |
| * clipboard.setContents(data, transfers); |
| * 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_INVALID_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 SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * @exception SWTError <ul> |
| * <li>ERROR_CANNOT_SET_CLIPBOARD - if the clipboard is locked or otherwise unavailable</li> |
| * </ul> |
| * |
| * <p>NOTE: ERROR_CANNOT_SET_CLIPBOARD should be an SWTException, since it is a |
| * recoverable error, but can not be changed due to backward compatibility.</p> |
| */ |
| public void setContents(Object[] data, Transfer[] dataTypes) { |
| setContents(data, dataTypes, DND.CLIPBOARD); |
| } |
| |
| /** |
| * Place data of the specified type on the specified clipboard. More than one |
| * type of data can be placed on the specified clipboard at the same time. |
| * Setting the data clears any previous data from the specified |
| * clipboard, regardless of type. |
| * |
| * <p>NOTE: On some platforms, the data is immediately copied to the specified |
| * clipboard but on other platforms it is provided upon request. As a result, |
| * if the application modifies 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 clipboards value is either one of the clipboard constants defined in |
| * class <code>DND</code>, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>DND</code> clipboard constants.</p> |
| * |
| * <p>The following snippet shows text and RTF text being set on the copy/paste |
| * clipboard: |
| * </p> |
| * |
| * <pre><code> |
| * Clipboard clipboard = new Clipboard(display); |
| * String textData = "Hello World"; |
| * String rtfData = "{\\rtf1\\b\\i Hello World}"; |
| * TextTransfer textTransfer = TextTransfer.getInstance(); |
| * RTFTransfer rtfTransfer = RTFTransfer.getInstance(); |
| * Transfer[] transfers = new Transfer[]{textTransfer, rtfTransfer}; |
| * Object[] data = new Object[]{textData, rtfData}; |
| * clipboard.setContents(data, transfers, DND.CLIPBOARD); |
| * 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 |
| * @param clipboards on which to set the data |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_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 SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * @exception SWTError <ul> |
| * <li>ERROR_CANNOT_SET_CLIPBOARD - if the clipboard is locked or otherwise unavailable</li> |
| * </ul> |
| * |
| * <p>NOTE: ERROR_CANNOT_SET_CLIPBOARD should be an SWTException, since it is a |
| * recoverable error, but can not be changed due to backward compatibility.</p> |
| * |
| * @see DND#CLIPBOARD |
| * @see DND#SELECTION_CLIPBOARD |
| * |
| * @since 3.1 |
| */ |
| public void setContents(Object[] data, Transfer[] dataTypes, int clipboards) { |
| checkWidget(); |
| if (data == null || dataTypes == null || data.length != dataTypes.length || data.length == 0) { |
| DND.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| for (int i = 0; i < data.length; i++) { |
| if (data[i] == null || dataTypes[i] == null || !dataTypes[i].validate(data[i])) { |
| DND.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| } |
| ClipboardProxy proxy = ClipboardProxy._getInstance(display); |
| if (!proxy.setData(this, data, dataTypes, clipboards)) { |
| DND.error(DND.ERROR_CANNOT_SET_CLIPBOARD); |
| } |
| } |
| |
| /** |
| * Returns an array of the data types currently available on the system |
| * clipboard. Use with Transfer.isSupportedType. |
| * |
| * @return array of data types currently available on the system clipboard |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see Transfer#isSupportedType |
| * |
| * @since 3.0 |
| */ |
| public TransferData[] getAvailableTypes() { |
| return getAvailableTypes(DND.CLIPBOARD); |
| } |
| |
| /** |
| * Returns an array of the data types currently available on the specified |
| * clipboard. Use with Transfer.isSupportedType. |
| * |
| * <p>The clipboards value is either one of the clipboard constants defined in |
| * class <code>DND</code>, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>DND</code> clipboard constants.</p> |
| * |
| * @param clipboards from which to get the data types |
| * @return array of data types currently available on the specified clipboard |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see Transfer#isSupportedType |
| * @see DND#CLIPBOARD |
| * @see DND#SELECTION_CLIPBOARD |
| * |
| * @since 3.1 |
| */ |
| public TransferData[] getAvailableTypes(int clipboards) { |
| checkWidget(); |
| TransferData[] result = null; |
| if ((clipboards & DND.CLIPBOARD) != 0) { |
| int[] types = getAvailableClipboardTypes(); |
| result = new TransferData[types.length]; |
| for (int i = 0; i < types.length; i++) { |
| result[i] = new TransferData(); |
| result[i].type = types[i]; |
| } |
| } |
| if ((clipboards & DND.SELECTION_CLIPBOARD) != 0) { |
| int[] types = getAvailablePrimaryTypes(); |
| int offset = 0; |
| if (result != null) { |
| TransferData[] newResult = new TransferData[result.length + types.length]; |
| System.arraycopy(result,0, newResult, 0, result.length); |
| offset = result.length; |
| result = newResult; |
| } else { |
| result = new TransferData[types.length]; |
| } |
| for (int i = 0; i < types.length; i++) { |
| result[offset+i] = new TransferData(); |
| result[offset+i].type = types[i]; |
| } |
| } |
| return result == null ? new TransferData[0] : result; |
| } |
| |
| /** |
| * 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> |
| * |
| * @return a platform specific list of the data types currently available on the |
| * system clipboard |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public String[] getAvailableTypeNames() { |
| checkWidget(); |
| int[] types1 = getAvailableClipboardTypes(); |
| int[] types2 = getAvailablePrimaryTypes(); |
| String[] result = new String[types1.length + types2.length]; |
| int count = 0; |
| for (int i = 0; i < types1.length; i++) { |
| long pName = GDK.gdk_atom_name(types1[i]); |
| if (pName == 0) { |
| continue; |
| } |
| byte[] buffer = new byte [C.strlen(pName)]; |
| C.memmove (buffer, pName, buffer.length); |
| OS.g_free (pName); |
| result[count++] = "GTKCLIPBOARD "+new String (Converter.mbcsToWcs (buffer)); |
| } |
| for (int i = 0; i < types2.length; i++) { |
| long pName = GDK.gdk_atom_name(types2[i]); |
| if (pName == 0) { |
| continue; |
| } |
| byte[] buffer = new byte [C.strlen(pName)]; |
| C.memmove (buffer, pName, buffer.length); |
| OS.g_free (pName); |
| result[count++] = "GTKPRIMARYCLIPBOARD "+new String (Converter.mbcsToWcs (buffer)); |
| } |
| if (count < result.length){ |
| String[] temp = new String[count]; |
| System.arraycopy(result, 0, temp, 0, count); |
| result = temp; |
| } |
| return result; |
| } |
| |
| private int[] getAvailablePrimaryTypes() { |
| int[] types = new int[0]; |
| long selection_data = gtk_clipboard_wait_for_contents(GTKPRIMARYCLIPBOARD, TARGET); |
| if (selection_data != 0) { |
| try { |
| int length = GTK.gtk_selection_data_get_length(selection_data); |
| int format = GTK.gtk_selection_data_get_format(selection_data); |
| long data = GTK.gtk_selection_data_get_data(selection_data); |
| if (length != 0) { |
| types = new int[length * 8 / format]; |
| C.memmove(types, data, length); |
| } |
| } finally { |
| GTK.gtk_selection_data_free(selection_data); |
| } |
| } |
| return types; |
| } |
| private int[] getAvailableClipboardTypes () { |
| int[] types = new int[0]; |
| long selection_data = gtk_clipboard_wait_for_contents(GTKCLIPBOARD, TARGET); |
| if (selection_data != 0) { |
| try { |
| int length = GTK.gtk_selection_data_get_length(selection_data); |
| int format = GTK.gtk_selection_data_get_format(selection_data); |
| long data = GTK.gtk_selection_data_get_data(selection_data); |
| if (length != 0) { |
| types = new int[length * 8 / format]; |
| C.memmove(types, data, length); |
| } |
| } finally { |
| GTK.gtk_selection_data_free(selection_data); |
| } |
| } |
| return types; |
| } |
| |
| long gtk_clipboard_wait_for_contents(long clipboard, long target) { |
| long startTime = System.currentTimeMillis(); |
| String key = "org.eclipse.swt.internal.gtk.dispatchEvent"; |
| Display display = this.display; |
| display.setData(key, new int[]{GDK.GDK_PROPERTY_NOTIFY, GDK.GDK_SELECTION_CLEAR, GDK.GDK_SELECTION_REQUEST, GDK.GDK_SELECTION_NOTIFY}); |
| long selection_data = GTK.gtk_clipboard_wait_for_contents(clipboard, target); |
| display.setData(key, null); |
| long duration = System.currentTimeMillis() - startTime; |
| if (selection_data == 0 && duration > 5000) { |
| // Bug 241957: In case of timeout take clipboard ownership to unblock future calls |
| ClipboardProxy._getInstance(display).setData(this, new String[] {" "}, |
| new Transfer[] { TextTransfer.getInstance() }, |
| clipboard == GTKCLIPBOARD ? DND.CLIPBOARD : DND.SELECTION_CLIPBOARD); |
| } |
| return selection_data; |
| } |
| } |