add support for X selection clipboard
diff --git a/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/motif/org/eclipse/swt/dnd/Clipboard.java b/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/motif/org/eclipse/swt/dnd/Clipboard.java
index 9c6e22d..9cc5b24 100755
--- a/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/motif/org/eclipse/swt/dnd/Clipboard.java
+++ b/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/motif/org/eclipse/swt/dnd/Clipboard.java
@@ -12,9 +12,9 @@
import org.eclipse.swt.*;
-import org.eclipse.swt.widgets.*;
import org.eclipse.swt.internal.*;
import org.eclipse.swt.internal.motif.*;
+import org.eclipse.swt.widgets.*;
/**
* The <code>Clipboard</code> provides a mechanism for transferring data from one
@@ -25,35 +25,6 @@
public class Clipboard {
Display display;
- int shellHandle;
- int clipboardAtom, primaryAtom, targetsAtom;
-
- static int[][] convertData = new int[10][3];
- static Clipboard activeClipboard = null;
- static Clipboard activePrimaryClipboard = null;
- static Object[] ClipboardData;
- static Transfer[] ClipboardDataTypes;
- static Object[] PrimaryClipboardData;
- static Transfer[] PrimaryClipboardDataTypes;
-
- static boolean done = false;
- static Object selectionValue;
- static Transfer selectionTransfer;
-
- static byte [] CLIPBOARD = Converter.wcsToMbcs (null, "CLIPBOARD", true);
- static byte [] PRIMARY = Converter.wcsToMbcs (null, "PRIMARY", true);
- static byte [] TARGETS = Converter.wcsToMbcs (null, "TARGETS", true);
- static Callback XtConvertSelectionCallback;
- static Callback XtLoseSelectionCallback;
- static Callback XtSelectionDoneCallback;
- static Callback XtSelectionCallbackCallback;
-
- static {
- XtConvertSelectionCallback = new Callback(Clipboard.class, "XtConvertSelection", 7); //$NON-NLS-1$
- XtLoseSelectionCallback = new Callback(Clipboard.class, "XtLoseSelection", 2); //$NON-NLS-1$
- XtSelectionDoneCallback = new Callback(Clipboard.class, "XtSelectionDone", 3); //$NON-NLS-1$
- XtSelectionCallbackCallback = new Callback(Clipboard.class, "XtSelectionCallback", 7); //$NON-NLS-1$
- }
/**
* Constructs a new instance of this class. Creating an instance of a Clipboard
@@ -70,28 +41,19 @@
* @see Clipboard#dispose
* @see Clipboard#checkSubclass
*/
-public Clipboard(Display display) {
- checkSubclass ();
- if (display == null) {
- display = Display.getCurrent();
+ public Clipboard(Display display) {
+ checkSubclass ();
if (display == null) {
- display = Display.getDefault();
+ display = Display.getCurrent();
+ if (display == null) {
+ display = Display.getDefault();
+ }
}
+ if (display.getThread() != Thread.currentThread()) {
+ DND.error(SWT.ERROR_THREAD_INVALID_ACCESS);
+ }
+ this.display = display;
}
- if (display.getThread() != Thread.currentThread()) {
- DND.error(SWT.ERROR_THREAD_INVALID_ACCESS);
- }
- this.display = display;
-
- int widgetClass = OS.topLevelShellWidgetClass ();
- shellHandle = OS.XtAppCreateShell (null, null, widgetClass, display.xDisplay, null, 0);
- OS.XtSetMappedWhenManaged (shellHandle, false);
- OS.XtRealizeWidget (shellHandle);
- int xDisplay = OS.XtDisplay(shellHandle);
- clipboardAtom = OS.XmInternAtom(xDisplay, CLIPBOARD, false);
- primaryAtom = OS.XmInternAtom(xDisplay, PRIMARY, false);
- targetsAtom = OS.XmInternAtom(xDisplay, TARGETS, false);
-}
/**
* Checks that this class can be subclassed.
@@ -203,14 +165,8 @@
*/
public void clearContents(int clipboards) {
checkWidget();
- int xDisplay = OS.XtDisplay(shellHandle);
- if (xDisplay == 0) return;
- if ((clipboards & DND.CLIPBOARD) != 0 && activeClipboard == this) {
- OS.XtDisownSelection(shellHandle, clipboardAtom, OS.CurrentTime);
- }
- if ((clipboards & DND.SELECTION_CLIPBOARD) != 0 && activePrimaryClipboard == this) {
- OS.XtDisownSelection(shellHandle, primaryAtom, OS.CurrentTime);
- }
+ ClipboardProxy proxy = ClipboardProxy._getInstance(display);
+ proxy.clear(this, clipboards);
}
/**
@@ -228,19 +184,6 @@
public void dispose () {
if (isDisposed()) return;
if (display.getThread() != Thread.currentThread()) DND.error(SWT.ERROR_THREAD_INVALID_ACCESS);
- if (shellHandle != 0) {
- int xDisplay = OS.XtDisplay(shellHandle);
- if (xDisplay != 0) {
- if (activeClipboard != null) {
- OS.XtDisownSelection(shellHandle, clipboardAtom, OS.CurrentTime);
- }
- if (activePrimaryClipboard != null) {
- OS.XtDisownSelection(shellHandle, primaryAtom, OS.CurrentTime);
- }
- }
- OS.XtDestroyWidget (shellHandle);
- shellHandle = 0;
- }
display = null;
}
@@ -326,42 +269,17 @@
public Object getContents(Transfer transfer, int clipboards) {
checkWidget();
if (transfer == null) DND.error(SWT.ERROR_NULL_ARGUMENT);
- int xDisplay = OS.XtDisplay (shellHandle);
- if (xDisplay == 0) return null;
+ ClipboardProxy proxy = ClipboardProxy._getInstance(display);
Object result = null;
if ((clipboards & DND.CLIPBOARD) != 0) {
- result = getContents(xDisplay, transfer, clipboardAtom);
+ result = proxy.getContents(transfer, DND.CLIPBOARD);
}
if (result != null) return result;
if ((clipboards & DND.SELECTION_CLIPBOARD) != 0) {
- result = getContents(xDisplay, transfer, primaryAtom);
+ result = proxy.getContents(transfer, DND.SELECTION_CLIPBOARD);
}
return result;
}
-
-Object getContents(int xDisplay, Transfer transfer, int selection) {
- int[] types = getAvailableTypes(xDisplay, selection);
- int index = -1;
- TransferData transferData = new TransferData();
- for (int i = 0; i < types.length; i++) {
- transferData.type = types[i];
- if (transfer.isSupportedType(transferData)) {
- index = i;
- break;
- }
- }
- if (index == -1) return null;
- done = false;
- selectionValue = null; selectionTransfer = transfer;
- OS.XtGetSelectionValue(shellHandle, selection, types[index], XtSelectionCallbackCallback.getAddress(), 0, OS.CurrentTime);
- if (!done) {
- int xtContext = OS.XtDisplayToApplicationContext(xDisplay);
- int selectionTimeout = OS.XtAppGetSelectionTimeout(xtContext);
- _wait(selectionTimeout);
-
- }
- return (!done) ? null : selectionValue;
-}
/**
* Returns <code>true</code> if the clipboard has been disposed,
@@ -424,14 +342,13 @@
*/
public TransferData[] getAvailableTypes(int clipboards) {
checkWidget();
- int xDisplay = OS.XtDisplay (shellHandle);
- if (xDisplay == 0) return null;
+ ClipboardProxy proxy = ClipboardProxy._getInstance(display);
int[] types = null;
if ((clipboards & DND.CLIPBOARD) != 0) {
- types = getAvailableTypes(xDisplay, clipboardAtom);
+ types = proxy.getAvailableTypes(DND.CLIPBOARD);
}
if ((clipboards & DND.SELECTION_CLIPBOARD) != 0) {
- int[] primaryTypes = getAvailableTypes(xDisplay, primaryAtom);
+ int[] primaryTypes = proxy.getAvailableTypes(DND.SELECTION_CLIPBOARD);
if (types == null) {
types = primaryTypes;
} else {
@@ -468,12 +385,12 @@
*/
public String[] getAvailableTypeNames() {
checkWidget();
- int xDisplay = OS.XtDisplay (shellHandle);
- if (xDisplay == 0) return new String[0];
- int[] types = getAvailableTypes(xDisplay, clipboardAtom);
- int[] primaryTypes = getAvailableTypes(xDisplay, primaryAtom);
+ ClipboardProxy proxy = ClipboardProxy._getInstance(display);
+ int[] types = proxy.getAvailableTypes(DND.CLIPBOARD);
+ int[] primaryTypes = proxy.getAvailableTypes(DND.SELECTION_CLIPBOARD);
String[] names = new String[types.length + primaryTypes.length];
int index = 0;
+ int xDisplay = display.xDisplay;
for (int i = 0; i < types.length; i++) {
int ptr = OS.XmGetAtomName(xDisplay, types[i]);
int length = OS.strlen(ptr);
@@ -497,19 +414,6 @@
return names;
}
-int[] getAvailableTypes(int xDisplay, int selection) {
- done = false;
- selectionValue = null; selectionTransfer = null;
- OS.XtGetSelectionValue(shellHandle, selection, targetsAtom, XtSelectionCallbackCallback.getAddress(), 0, OS.CurrentTime);
- if (!done) {
- int xtContext = OS.XtDisplayToApplicationContext(xDisplay);
- int selectionTimeout = OS.XtAppGetSelectionTimeout(xtContext);
- _wait(selectionTimeout);
-
- }
- return (!done || selectionValue == null) ? new int[0] : (int[])selectionValue;
-}
-
/**
* 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
@@ -630,214 +534,7 @@
DND.error(SWT.ERROR_INVALID_ARGUMENT);
}
}
- if ((clipboards & DND.CLIPBOARD) != 0) {
- ClipboardData = data;
- ClipboardDataTypes = dataTypes;
- _setContents(data, dataTypes, clipboardAtom);
- activeClipboard = this;
- }
- if ((clipboards & DND.SELECTION_CLIPBOARD) != 0) {
- PrimaryClipboardData = data;
- PrimaryClipboardDataTypes = dataTypes;
- _setContents(data, dataTypes, primaryAtom);
- activePrimaryClipboard = this;
- }
-}
-void _setContents(Object[] data, Transfer[] dataTypes, int selection) {
- int XtConvertSelectionProc = XtConvertSelectionCallback.getAddress();
- int XtLoseSelectionProc = XtLoseSelectionCallback.getAddress();
- int XtSelectionDoneProc = XtSelectionDoneCallback.getAddress();
- if (!OS.XtOwnSelection(shellHandle, selection, OS.CurrentTime, XtConvertSelectionProc, XtLoseSelectionProc, XtSelectionDoneProc)) {
- DND.error(DND.ERROR_CANNOT_SET_CLIPBOARD);
- }
-}
-
-static void storePtr(int ptr, int selection, int target) {
- int index = -1;
- for (int i = 0; i < convertData.length; i++) {
- if (convertData[i][0] == 0){
- index = i;
- break;
- }
- }
- if (index == -1) {
- int[][] newConvertData = new int[convertData.length][3];
- System.arraycopy(convertData, 0, newConvertData, 0, convertData.length);
- index = convertData.length;
- convertData = newConvertData;
- }
- convertData[index][0] = selection;
- convertData[index][1] = target;
- convertData[index][2] = ptr;
-}
-
-void _wait(int timeout) {
- int xDisplay = OS.XtDisplay(shellHandle);
- if (xDisplay == 0) return;
- long start = System.currentTimeMillis();
- int xEvent = OS.XtMalloc (XEvent.sizeof);
- Callback checkEventCallback = new Callback(this, "checkEvent", 3);
- int checkEventProc = checkEventCallback.getAddress();
- display.timerExec(timeout, new Runnable() {
- public void run() {
- // timer required to force display.sleep() to wake up
- // in the case where no events are received
- }
- });
- while (!done && System.currentTimeMillis() - start < timeout && !isDisposed()) {
- if (OS.XCheckIfEvent (xDisplay, xEvent, checkEventProc, 0) != 0) {
- OS.XtDispatchEvent(xEvent);
- } else {
- display.sleep();
- }
- }
- OS.XtFree (xEvent);
- checkEventCallback.dispose();
-}
-int checkEvent(int display, int event, int arg) {
- XEvent xEvent = new XEvent();
- OS.memmove (xEvent, event, XEvent.sizeof);
- switch (xEvent.type) {
- case OS.SelectionClear:
- case OS.SelectionNotify:
- case OS.SelectionRequest:
- case OS.PropertyNotify:
- return 1;
- }
- return 0;
-}
-static int XtConvertSelection(int widget, int selection, int target, int type, int value, int length, int format) {
- int xDisplay = OS.XtDisplay (widget);
- if (xDisplay == 0) return 0;
- int selectionAtom = 0;
- if (selection != 0) {
- int[] dest = new int[1];
- OS.memmove(dest, selection, 4);
- selectionAtom = dest[0];
- }
- if (selectionAtom == 0) return 0;
- int clipboardAtom = OS.XInternAtom (xDisplay, CLIPBOARD, false);
- int primaryAtom = OS.XInternAtom (xDisplay, PRIMARY, false);
- int targetsAtom = OS.XInternAtom (xDisplay, TARGETS, false);
- Transfer[] types = null;
- if (selectionAtom == clipboardAtom) types = ClipboardDataTypes;
- if (selectionAtom == primaryAtom) types = PrimaryClipboardDataTypes;
- if (types == null) return 0;
-
- int targetAtom = 0;
- if (target != 0) {
- int[] dest = new int[1];
- OS.memmove(dest, target, 4);
- targetAtom = dest[0];
- }
- if (targetAtom == targetsAtom) {
- int[] transferTypes = new int[] {targetAtom};
- for (int i = 0; i < types.length; i++) {
- TransferData[] subTypes = types[i].getSupportedTypes();
- int[] newtransferTypes = new int[transferTypes.length + subTypes.length];
- System.arraycopy(transferTypes, 0, newtransferTypes, 0, transferTypes.length);
- int index = transferTypes.length;
- transferTypes = newtransferTypes;
- for (int j = 0; j < subTypes.length; j++) {
- transferTypes[index++] = subTypes[j].type;
- }
- }
- int ptr = OS.XtMalloc(transferTypes.length*4);
- storePtr(ptr, selectionAtom, targetAtom);
- OS.memmove(ptr, transferTypes, transferTypes.length*4);
- OS.memmove(type, new int[]{targetsAtom}, 4);
- OS.memmove(value, new int[] {ptr}, 4);
- OS.memmove(length, new int[]{transferTypes.length}, 4);
- OS.memmove(format, new int[]{32}, 4);
- return 1;
- }
-
- TransferData tdata = new TransferData();
- tdata.type = targetAtom;
- int index = -1;
- for (int i = 0; i < types.length; i++) {
- if (types[i].isSupportedType(tdata)) {
- index = i;
- break;
- }
- }
- if (index == -1) return 0;
- Object[] data = selectionAtom == clipboardAtom ? ClipboardData : PrimaryClipboardData;
- types[index].javaToNative(data[index], tdata);
- if (tdata.format < 8 || tdata.format % 8 != 0) {
- OS.XtFree(tdata.pValue);
- return 0;
- }
- // copy data back to value
- OS.memmove(type, new int[]{tdata.type}, 4);
- OS.memmove(value, new int[]{tdata.pValue}, 4);
- OS.memmove(length, new int[]{tdata.length}, 4);
- OS.memmove(format, new int[]{tdata.format}, 4);
- storePtr(tdata.pValue, selectionAtom, targetAtom);
- return 1;
-}
-
-static int XtLoseSelection(int widget, int selection) {
- int xDisplay = OS.XtDisplay (widget);
- int clipboardAtom = OS.XInternAtom (xDisplay, CLIPBOARD, false);
- if (selection == clipboardAtom) {
- activeClipboard = null;
- ClipboardData = null;
- ClipboardDataTypes = null;
- }
- int primaryAtom = OS.XInternAtom (xDisplay, PRIMARY, false);
- if (selection == primaryAtom) {
- activePrimaryClipboard = null;
- PrimaryClipboardData = null;
- PrimaryClipboardDataTypes = null;
- }
- return 0;
-}
-
-static int XtSelectionCallback(int widget, int client_data, int selection, int type, int value, int length, int format) {
- done = true;
- int[] selectionType = new int[1];
- if (type != 0) OS.memmove(selectionType, type, 4);
- if (selectionType[0] == 0) return 0;
- int[] selectionLength = new int[1];
- if (length != 0) OS.memmove(selectionLength, length, 4);
- if (selectionLength[0] == 0) return 0;
- int[] selectionFormat = new int[1];
- if (format != 0) OS.memmove(selectionFormat, format, 4);
- int xDisplay = OS.XtDisplay (widget);
- if (xDisplay == 0) return 0;
- int targetsAtom = OS.XInternAtom (xDisplay, TARGETS, false);
- if (selectionType[0] == targetsAtom) {
- int[] targets = new int[selectionLength[0]];
- OS.memmove(targets, value, selectionLength[0] * selectionFormat [0] / 8);
- selectionValue = targets;
- return 0;
- }
- if (selectionTransfer != null) {
- TransferData transferData = new TransferData();
- transferData.type = selectionType[0];
- transferData.length = selectionLength[0];
- transferData.format = selectionFormat[0];
- transferData.pValue = value;
- transferData.result = 1;
- selectionValue = selectionTransfer.nativeToJava(transferData);
- }
- return 0;
-}
-
-static int XtSelectionDone(int widget, int selection, int target) {
- if (target == 0 || selection == 0) return 0;
- int[] selectionAtom = new int[1];
- OS.memmove(selectionAtom, selection, 4);
- int[] targetAtom = new int[1];
- OS.memmove(targetAtom, target, 4);
- for (int i = 0; i < convertData.length; i++) {
- if (convertData[i][0] == selectionAtom[0] && convertData[i][1] == targetAtom[0]) {
- OS.XtFree(convertData[i][2]);
- convertData[i][0] = convertData[i][1] = convertData[i][2] = 0;
- break;
- }
- }
- return 0;
+ ClipboardProxy proxy = ClipboardProxy._getInstance(display);
+ proxy.setContents(this, data, dataTypes, clipboards);
}
}
diff --git a/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/motif/org/eclipse/swt/dnd/ClipboardProxy.java b/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/motif/org/eclipse/swt/dnd/ClipboardProxy.java
index b6f58c0..65cf5af 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/motif/org/eclipse/swt/dnd/ClipboardProxy.java
+++ b/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/motif/org/eclipse/swt/dnd/ClipboardProxy.java
@@ -1,17 +1,361 @@
-/*
- * Created on Nov 22, 2004
- *
- * TODO To change the template for this generated file go to
- * Window - Preferences - Java - Code Style - Code Templates
- */
+/*******************************************************************************
+ * Copyright (c) 2000, 2004 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are 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
+ *
+ * Contributors:
+ * IBM Corporation - initial API and implementation
+ *******************************************************************************/
package org.eclipse.swt.dnd;
-/**
- * @author torres
- *
- * TODO To change the template for this generated type comment go to
- * Window - Preferences - Java - Code Style - Code Templates
- */
-public class ClipboardProxy {
+import org.eclipse.swt.*;
+import org.eclipse.swt.internal.*;
+import org.eclipse.swt.internal.motif.*;
+import org.eclipse.swt.widgets.*;
+
+class ClipboardProxy {
+
+ Display display;
+ int shellHandle;
+ int clipboardAtom, primaryAtom, targetsAtom;
+ int[][] convertData = new int[10][3];
+ Clipboard activeClipboard = null;
+ Clipboard activePrimaryClipboard = null;
+ Object[] clipboardData;
+ Transfer[] clipboardDataTypes;
+ Object[] primaryClipboardData;
+ Transfer[] primaryClipboardDataTypes;
+
+ boolean done = false;
+ Object selectionValue;
+ Transfer selectionTransfer;
+
+ Callback XtConvertSelectionCallback;
+ Callback XtLoseSelectionCallback;
+ Callback XtSelectionDoneCallback;
+ Callback XtSelectionCallbackCallback;
+
+ static byte [] CLIPBOARD = Converter.wcsToMbcs (null, "CLIPBOARD", true); //$NON-NLS-1$
+ static byte [] PRIMARY = Converter.wcsToMbcs (null, "PRIMARY", true); //$NON-NLS-1$
+ static byte [] TARGETS = Converter.wcsToMbcs (null, "TARGETS", true); //$NON-NLS-1$
+ static String ID = "CLIPBOARD PROXY OBJECT"; //$NON-NLS-1$
+
+ static ClipboardProxy _getInstance(final Display display) {
+ ClipboardProxy proxy = (ClipboardProxy) display.getData(ID);
+ if (proxy != null) return proxy;
+ proxy = new ClipboardProxy(display);
+ display.setData(ID, proxy);
+ display.addListener(SWT.Dispose, new Listener() {
+ public void handleEvent(Event event) {
+ ClipboardProxy clipbordProxy = (ClipboardProxy)display.getData(ID);
+ if (clipbordProxy == null) return;
+ display.setData(ID, null);
+ clipbordProxy.dispose();
+ }
+ });
+ return proxy;
+ }
+
+ClipboardProxy(Display display) {
+ this.display = display;
+ XtConvertSelectionCallback = new Callback(this, "XtConvertSelection", 7); //$NON-NLS-1$
+ XtLoseSelectionCallback = new Callback(this, "XtLoseSelection", 2); //$NON-NLS-1$
+ XtSelectionDoneCallback = new Callback(this, "XtSelectionDone", 3); //$NON-NLS-1$
+ XtSelectionCallbackCallback = new Callback(this, "XtSelectionCallback", 7); //$NON-NLS-1$
+
+ int widgetClass = OS.topLevelShellWidgetClass ();
+ shellHandle = OS.XtAppCreateShell (null, null, widgetClass, display.xDisplay, null, 0);
+ OS.XtSetMappedWhenManaged (shellHandle, false);
+ OS.XtRealizeWidget (shellHandle);
+ int xDisplay = OS.XtDisplay(shellHandle);
+ clipboardAtom = OS.XmInternAtom(xDisplay, CLIPBOARD, false);
+ primaryAtom = OS.XmInternAtom(xDisplay, PRIMARY, false);
+ targetsAtom = OS.XmInternAtom(xDisplay, TARGETS, false);
+}
+
+
+ void clear(Clipboard owner, int clipboards) {
+ int xDisplay = OS.XtDisplay(shellHandle);
+ if (xDisplay == 0) return;
+ if ((clipboards & DND.CLIPBOARD) != 0 && activeClipboard == owner) {
+ OS.XtDisownSelection(shellHandle, clipboardAtom, OS.CurrentTime);
+ }
+ if ((clipboards & DND.SELECTION_CLIPBOARD) != 0 && activePrimaryClipboard == owner) {
+ OS.XtDisownSelection(shellHandle, primaryAtom, OS.CurrentTime);
+ }
+}
+
+ void dispose () {
+ if (display == null) return;
+ if (shellHandle != 0) {
+ if (activeClipboard != null) {
+ OS.XtDisownSelection(shellHandle, clipboardAtom, OS.CurrentTime);
+ }
+ if (activePrimaryClipboard != null) {
+ OS.XtDisownSelection(shellHandle, primaryAtom, OS.CurrentTime);
+ }
+ OS.XtDestroyWidget (shellHandle);
+ shellHandle = 0;
+ }
+ if (XtConvertSelectionCallback != null) XtConvertSelectionCallback.dispose();
+ XtConvertSelectionCallback = null;
+ if (XtLoseSelectionCallback != null) XtLoseSelectionCallback.dispose();
+ XtLoseSelectionCallback = null;
+ if (XtSelectionCallbackCallback != null) XtSelectionCallbackCallback.dispose();
+ XtSelectionCallbackCallback = null;
+ if (XtSelectionDoneCallback != null) XtSelectionDoneCallback.dispose();
+ XtSelectionDoneCallback = null;
+ clipboardData = null;
+ clipboardDataTypes = null;
+ primaryClipboardData = null;
+ primaryClipboardDataTypes = null;
+}
+
+Object getContents(Transfer transfer, int clipboardType) {
+ int[] types = getAvailableTypes(clipboardType);
+ int index = -1;
+ TransferData transferData = new TransferData();
+ for (int i = 0; i < types.length; i++) {
+ transferData.type = types[i];
+ if (transfer.isSupportedType(transferData)) {
+ index = i;
+ break;
+ }
+ }
+ if (index == -1) return null;
+ done = false;
+ selectionValue = null; selectionTransfer = transfer;
+ int selection = clipboardType == DND.CLIPBOARD ? clipboardAtom : primaryAtom;
+ OS.XtGetSelectionValue(shellHandle, selection, types[index], XtSelectionCallbackCallback.getAddress(), 0, OS.CurrentTime);
+ if (!done) {
+ int xDisplay = OS.XtDisplay (shellHandle);
+ if (xDisplay == 0) return null;
+ int xtContext = OS.XtDisplayToApplicationContext(xDisplay);
+ int selectionTimeout = OS.XtAppGetSelectionTimeout(xtContext);
+ wait(selectionTimeout);
+ }
+ return (!done) ? null : selectionValue;
+}
+
+int[] getAvailableTypes(int clipboardType) {
+ int xDisplay = OS.XtDisplay (shellHandle);
+ if (xDisplay == 0) return new int[0];
+ done = false;
+ selectionValue = null; selectionTransfer = null;
+ int selection = clipboardType == DND.CLIPBOARD ? clipboardAtom : primaryAtom;
+ OS.XtGetSelectionValue(shellHandle, selection, targetsAtom, XtSelectionCallbackCallback.getAddress(), 0, OS.CurrentTime);
+ if (!done) {
+ int xtContext = OS.XtDisplayToApplicationContext(xDisplay);
+ int selectionTimeout = OS.XtAppGetSelectionTimeout(xtContext);
+ wait(selectionTimeout);
+
+ }
+ return (!done || selectionValue == null) ? new int[0] : (int[])selectionValue;
+}
+
+void setContents(Clipboard owner, Object[] data, Transfer[] dataTypes, int clipboards) {
+ if ((clipboards & DND.CLIPBOARD) != 0) {
+ clipboardData = data;
+ clipboardDataTypes = dataTypes;
+ int XtConvertSelectionProc = XtConvertSelectionCallback.getAddress();
+ int XtLoseSelectionProc = XtLoseSelectionCallback.getAddress();
+ int XtSelectionDoneProc = XtSelectionDoneCallback.getAddress();
+ if (!OS.XtOwnSelection(shellHandle, clipboardAtom, OS.CurrentTime, XtConvertSelectionProc, XtLoseSelectionProc, XtSelectionDoneProc)) {
+ DND.error(DND.ERROR_CANNOT_SET_CLIPBOARD);
+ }
+ activeClipboard = owner;
+ }
+ if ((clipboards & DND.SELECTION_CLIPBOARD) != 0) {
+ primaryClipboardData = data;
+ primaryClipboardDataTypes = dataTypes;
+ int XtConvertSelectionProc = XtConvertSelectionCallback.getAddress();
+ int XtLoseSelectionProc = XtLoseSelectionCallback.getAddress();
+ int XtSelectionDoneProc = XtSelectionDoneCallback.getAddress();
+ if (!OS.XtOwnSelection(shellHandle, primaryAtom, OS.CurrentTime, XtConvertSelectionProc, XtLoseSelectionProc, XtSelectionDoneProc)) {
+ DND.error(DND.ERROR_CANNOT_SET_CLIPBOARD);
+ }
+ activePrimaryClipboard = owner;
+ }
+}
+
+void storePtr(int ptr, int selection, int target) {
+ int index = -1;
+ for (int i = 0; i < convertData.length; i++) {
+ if (convertData[i][0] == 0){
+ index = i;
+ break;
+ }
+ }
+ if (index == -1) {
+ int[][] newConvertData = new int[convertData.length][3];
+ System.arraycopy(convertData, 0, newConvertData, 0, convertData.length);
+ index = convertData.length;
+ convertData = newConvertData;
+ }
+ convertData[index][0] = selection;
+ convertData[index][1] = target;
+ convertData[index][2] = ptr;
+}
+
+void wait(int timeout) {
+ int xDisplay = OS.XtDisplay(shellHandle);
+ if (xDisplay == 0) return;
+ long start = System.currentTimeMillis();
+ int xEvent = OS.XtMalloc (XEvent.sizeof);
+ Callback checkEventCallback = new Callback(this, "checkEvent", 3); //$NON-NLS-1$
+ int checkEventProc = checkEventCallback.getAddress();
+ display.timerExec(timeout, new Runnable() {
+ public void run() {
+ // timer required to force display.sleep() to wake up
+ // in the case where no events are received
+ }
+ });
+ while (!done && System.currentTimeMillis() - start < timeout && display != null) {
+ if (OS.XCheckIfEvent (xDisplay, xEvent, checkEventProc, 0) != 0) {
+ OS.XtDispatchEvent(xEvent);
+ } else {
+ display.sleep();
+ }
+ }
+ OS.XtFree (xEvent);
+ checkEventCallback.dispose();
+}
+int checkEvent(int display, int event, int arg) {
+ XEvent xEvent = new XEvent();
+ OS.memmove (xEvent, event, XEvent.sizeof);
+ switch (xEvent.type) {
+ case OS.SelectionClear:
+ case OS.SelectionNotify:
+ case OS.SelectionRequest:
+ case OS.PropertyNotify:
+ return 1;
+ }
+ return 0;
+}
+int XtConvertSelection(int widget, int selection, int target, int type, int value, int length, int format) {
+ int selectionAtom = 0;
+ if (selection != 0) {
+ int[] dest = new int[1];
+ OS.memmove(dest, selection, 4);
+ selectionAtom = dest[0];
+ }
+ if (selectionAtom == 0) return 0;
+ Transfer[] types = null;
+ if (selectionAtom == clipboardAtom) types = clipboardDataTypes;
+ if (selectionAtom == primaryAtom) types = primaryClipboardDataTypes;
+ if (types == null) return 0;
+
+ int targetAtom = 0;
+ if (target != 0) {
+ int[] dest = new int[1];
+ OS.memmove(dest, target, 4);
+ targetAtom = dest[0];
+ }
+ if (targetAtom == targetsAtom) {
+ int[] transferTypes = new int[] {targetAtom};
+ for (int i = 0; i < types.length; i++) {
+ TransferData[] subTypes = types[i].getSupportedTypes();
+ int[] newtransferTypes = new int[transferTypes.length + subTypes.length];
+ System.arraycopy(transferTypes, 0, newtransferTypes, 0, transferTypes.length);
+ int index = transferTypes.length;
+ transferTypes = newtransferTypes;
+ for (int j = 0; j < subTypes.length; j++) {
+ transferTypes[index++] = subTypes[j].type;
+ }
+ }
+ int ptr = OS.XtMalloc(transferTypes.length*4);
+ storePtr(ptr, selectionAtom, targetAtom);
+ OS.memmove(ptr, transferTypes, transferTypes.length*4);
+ OS.memmove(type, new int[]{targetsAtom}, 4);
+ OS.memmove(value, new int[] {ptr}, 4);
+ OS.memmove(length, new int[]{transferTypes.length}, 4);
+ OS.memmove(format, new int[]{32}, 4);
+ return 1;
+ }
+
+ TransferData tdata = new TransferData();
+ tdata.type = targetAtom;
+ int index = -1;
+ for (int i = 0; i < types.length; i++) {
+ if (types[i].isSupportedType(tdata)) {
+ index = i;
+ break;
+ }
+ }
+ if (index == -1) return 0;
+ Object[] data = selectionAtom == clipboardAtom ? clipboardData : primaryClipboardData;
+ types[index].javaToNative(data[index], tdata);
+ if (tdata.format < 8 || tdata.format % 8 != 0) {
+ OS.XtFree(tdata.pValue);
+ return 0;
+ }
+ // copy data back to value
+ OS.memmove(type, new int[]{tdata.type}, 4);
+ OS.memmove(value, new int[]{tdata.pValue}, 4);
+ OS.memmove(length, new int[]{tdata.length}, 4);
+ OS.memmove(format, new int[]{tdata.format}, 4);
+ storePtr(tdata.pValue, selectionAtom, targetAtom);
+ return 1;
+}
+
+int XtLoseSelection(int widget, int selection) {
+ if (selection == clipboardAtom) {
+ activeClipboard = null;
+ clipboardData = null;
+ clipboardDataTypes = null;
+ }
+ if (selection == primaryAtom) {
+ activePrimaryClipboard = null;
+ primaryClipboardData = null;
+ primaryClipboardDataTypes = null;
+ }
+ return 0;
+}
+
+int XtSelectionCallback(int widget, int client_data, int selection, int type, int value, int length, int format) {
+ done = true;
+ int[] selectionType = new int[1];
+ if (type != 0) OS.memmove(selectionType, type, 4);
+ if (selectionType[0] == 0) return 0;
+ int[] selectionLength = new int[1];
+ if (length != 0) OS.memmove(selectionLength, length, 4);
+ if (selectionLength[0] == 0) return 0;
+ int[] selectionFormat = new int[1];
+ if (format != 0) OS.memmove(selectionFormat, format, 4);
+ if (selectionType[0] == targetsAtom) {
+ int[] targets = new int[selectionLength[0]];
+ OS.memmove(targets, value, selectionLength[0] * selectionFormat [0] / 8);
+ selectionValue = targets;
+ return 0;
+ }
+ if (selectionTransfer != null) {
+ TransferData transferData = new TransferData();
+ transferData.type = selectionType[0];
+ transferData.length = selectionLength[0];
+ transferData.format = selectionFormat[0];
+ transferData.pValue = value;
+ transferData.result = 1;
+ selectionValue = selectionTransfer.nativeToJava(transferData);
+ }
+ return 0;
+}
+
+int XtSelectionDone(int widget, int selection, int target) {
+ if (target == 0 || selection == 0) return 0;
+ int[] selectionAtom = new int[1];
+ OS.memmove(selectionAtom, selection, 4);
+ int[] targetAtom = new int[1];
+ OS.memmove(targetAtom, target, 4);
+ for (int i = 0; i < convertData.length; i++) {
+ if (convertData[i][0] == selectionAtom[0] && convertData[i][1] == targetAtom[0]) {
+ OS.XtFree(convertData[i][2]);
+ convertData[i][0] = convertData[i][1] = convertData[i][2] = 0;
+ break;
+ }
+ }
+ return 0;
+}
}
