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- /*
- * Copyright 2000-2021 Vaadin Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
-
- package com.vaadin.client.ui;
-
- import com.google.gwt.dom.client.Element;
- import com.google.gwt.dom.client.Style.Overflow;
- import com.google.gwt.dom.client.Style.WhiteSpace;
- import com.google.gwt.dom.client.TextAreaElement;
- import com.google.gwt.event.dom.client.KeyCodes;
- import com.google.gwt.event.dom.client.KeyDownEvent;
- import com.google.gwt.event.dom.client.KeyDownHandler;
- import com.google.gwt.user.client.DOM;
- import com.vaadin.client.BrowserInfo;
- import com.vaadin.client.WidgetUtil;
- import com.vaadin.client.ui.dd.DragImageModifier;
-
- /**
- * This class represents a multiline textfield (textarea).
- *
- * @author Vaadin Ltd.
- *
- */
- public class VTextArea extends VTextField implements DragImageModifier {
-
- public static final String CLASSNAME = "v-textarea";
-
- private EnterDownHandler enterDownHandler = new EnterDownHandler();
- private boolean wordWrap = true;
-
- private class EnterDownHandler implements KeyDownHandler {
- @Override
- public void onKeyDown(KeyDownEvent event) {
- // Fix for #12424/13811 - if the key being pressed is enter, we stop
- // propagation of the KeyDownEvents if there were no modifier keys
- // also pressed. This prevents shortcuts that are bound to only the
- // enter key from being processed but allows usage of e.g.
- // shift-enter or ctrl-enter.
- if (event.getNativeKeyCode() == KeyCodes.KEY_ENTER
- && !event.isAnyModifierKeyDown()) {
- event.stopPropagation();
- }
- }
- }
-
- public VTextArea() {
- super(DOM.createTextArea());
- setStyleName(CLASSNAME);
- addKeyDownHandler(enterDownHandler);
- getElement().getStyle().setOverflowX(Overflow.HIDDEN);
- }
-
- public TextAreaElement getTextAreaElement() {
- return super.getElement().cast();
- }
-
- public void setRows(int rows) {
- getTextAreaElement().setRows(rows);
- }
-
- public void setWordWrap(boolean wordWrap) {
- if (wordWrap == this.wordWrap) {
- return;
- }
- if (wordWrap) {
- getElement().removeAttribute("wrap");
- getElement().getStyle().clearOverflowY();
- getElement().getStyle().setOverflowX(Overflow.HIDDEN);
- getElement().getStyle().clearWhiteSpace();
- } else {
- getElement().setAttribute("wrap", "off");
- getElement().getStyle().setOverflow(Overflow.AUTO);
- getElement().getStyle().setWhiteSpace(WhiteSpace.PRE);
- }
- if (BrowserInfo.get().isOpera()
- || (BrowserInfo.get().isWebkit() && wordWrap)) {
- // Opera fails to dynamically update the wrap attribute so we detach
- // and reattach the whole TextArea.
- // Webkit fails to properly reflow the text when enabling wrapping,
- // same workaround
- WidgetUtil.detachAttach(getElement());
- }
- this.wordWrap = wordWrap;
- }
-
- @Override
- public void modifyDragImage(Element element) {
- // Fix for #13557 - drag image doesn't show original text area text.
- // It happens because "value" property is not copied into the cloned
- // element
- String value = getElement().getPropertyString("value");
- if (value != null) {
- element.setPropertyString("value", value);
- }
- }
- }
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