Add support for cut, copy, paste API on Text widget
The implementation is based on Clipboard API. Only SWT_COMPATIBILITY
mode is supported. Exceptions during clipboard transfer are ignored.
Change-Id: I8e3166a4235d7df3381d79e237f7e037abd144d6
diff --git a/bundles/org.eclipse.rap.rwt/src/org/eclipse/swt/widgets/Text.java b/bundles/org.eclipse.rap.rwt/src/org/eclipse/swt/widgets/Text.java
index d1d60fc..bd30607 100644
--- a/bundles/org.eclipse.rap.rwt/src/org/eclipse/swt/widgets/Text.java
+++ b/bundles/org.eclipse.rap.rwt/src/org/eclipse/swt/widgets/Text.java
@@ -1,5 +1,5 @@
/*******************************************************************************
- * Copyright (c) 2002, 2015 Innoopract Informationssysteme GmbH.
+ * Copyright (c) 2002, 2021 Innoopract Informationssysteme GmbH.
* 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
@@ -17,6 +17,9 @@
import org.eclipse.rap.rwt.internal.theme.ThemeAdapter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTException;
+import org.eclipse.swt.dnd.Clipboard;
+import org.eclipse.swt.dnd.TextTransfer;
+import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
@@ -29,7 +32,6 @@
import org.eclipse.swt.internal.widgets.textkit.TextLCA;
import org.eclipse.swt.internal.widgets.textkit.TextThemeAdapter;
-
/**
* Instances of this class are selectable user interface
* objects that allow the user to enter and modify text.
@@ -1024,6 +1026,101 @@
removeListener( SWT.Verify, listener );
}
+ /**
+ * Cuts the selected text.
+ * <p>
+ * The current selection is first copied to the
+ * clipboard and then deleted from the widget.
+ * </p>
+ *
+ * @exception UnsupportedOperationException when running the application in JEE_COMPATIBILITY mode
+ * @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 org.eclipse.rap.rwt.application.Application.OperationMode
+ *
+ * @since 3.16
+ */
+ public void cut() {
+ checkWidget();
+ if( ( style & SWT.READ_ONLY ) == 0 ) {
+ try {
+ Clipboard clipboard = new Clipboard( display );
+ Transfer[] transfers = new Transfer[] { TextTransfer.getInstance() };
+ Object[] data = new Object[] { getSelectionText() };
+ text = new StringBuffer( text ).replace( selection.x, selection.y, "" ).toString();
+ clipboard.setContents( data, transfers );
+ clipboard.dispose();
+ } catch ( @SuppressWarnings( "unused" ) Exception e ) {
+ // ignore unsupported browsers
+ }
+ }
+ }
+
+ /**
+ * Copies the selected text.
+ * <p>
+ * The current selection is copied to the clipboard.
+ * </p>
+ *
+ * @exception UnsupportedOperationException when running the application in JEE_COMPATIBILITY mode
+ * @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 org.eclipse.rap.rwt.application.Application.OperationMode
+ *
+ * @since 3.16
+ */
+ public void copy() {
+ checkWidget();
+ try {
+ Clipboard clipboard = new Clipboard( display );
+ Transfer[] transfers = new Transfer[] { TextTransfer.getInstance() };
+ Object[] data = new Object[] { getSelectionText() };
+ clipboard.setContents( data, transfers );
+ clipboard.dispose();
+ } catch ( @SuppressWarnings( "unused" ) Exception e ) {
+ // ignore unsupported browsers
+ }
+ }
+
+ /**
+ * Pastes text from clipboard.
+ * <p>
+ * The selected text is deleted from the widget
+ * and new text inserted from the clipboard.
+ * </p>
+ *
+ * @exception UnsupportedOperationException when running the application in JEE_COMPATIBILITY mode
+ * @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 org.eclipse.rap.rwt.application.Application.OperationMode
+ *
+ * @since 3.16
+ */
+ public void paste() {
+ checkWidget();
+ if( ( style & SWT.READ_ONLY ) == 0 ) {
+ try {
+ Clipboard clipboard = new Clipboard( display );
+ String content = ( String )clipboard.getContents( TextTransfer.getInstance() );
+ if( content != null ) {
+ text = new StringBuffer( text ).replace( selection.x, selection.y, content ).toString();
+ }
+ clipboard.dispose();
+ } catch ( @SuppressWarnings( "unused" ) Exception e ) {
+ // ignore unsupported browsers
+ }
+ }
+ }
+
@Override
@SuppressWarnings("unchecked")
public <T> T getAdapter( Class<T> adapter ) {
diff --git a/examples/org.eclipse.rap.demo.controls/src/org/eclipse/rap/demo/controls/TextTab.java b/examples/org.eclipse.rap.demo.controls/src/org/eclipse/rap/demo/controls/TextTab.java
index 8f5f8ef..8e019cb 100644
--- a/examples/org.eclipse.rap.demo.controls/src/org/eclipse/rap/demo/controls/TextTab.java
+++ b/examples/org.eclipse.rap.demo.controls/src/org/eclipse/rap/demo/controls/TextTab.java
@@ -424,6 +424,33 @@
text.insert( insertText.getText() );
}
} );
+ new Label( group, SWT.NONE );
+ Button cutButton = new Button( group, SWT.PUSH );
+ cutButton.setText( "Cut" );
+ cutButton.addSelectionListener( new SelectionAdapter() {
+ @Override
+ public void widgetSelected( SelectionEvent e ) {
+ text.cut();
+ }
+ } );
+ new Label( group, SWT.NONE );
+ Button copyButton = new Button( group, SWT.PUSH );
+ copyButton.setText( "Copy" );
+ copyButton.addSelectionListener( new SelectionAdapter() {
+ @Override
+ public void widgetSelected( SelectionEvent e ) {
+ text.copy();
+ }
+ } );
+ new Label( group, SWT.NONE );
+ Button pasteButton = new Button( group, SWT.PUSH );
+ pasteButton.setText( "Paste" );
+ pasteButton.addSelectionListener( new SelectionAdapter() {
+ @Override
+ public void widgetSelected( SelectionEvent e ) {
+ text.paste();
+ }
+ } );
}
private void createMessage( Composite parent ) {
