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- /*
- * Copyright 2000-2018 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;
-
- import com.google.gwt.dom.client.Element;
- import com.google.gwt.dom.client.NativeEvent;
- import com.google.gwt.user.client.Event;
- import com.vaadin.shared.MouseEventDetails;
- import com.vaadin.shared.MouseEventDetails.MouseButton;
-
- /**
- * Helper class for constructing a MouseEventDetails object from a
- * {@link NativeEvent}.
- *
- * @author Vaadin Ltd
- * @since 7.0.0
- *
- */
- public class MouseEventDetailsBuilder {
-
- /**
- * Construct a {@link MouseEventDetails} object from the given event.
- *
- * @param evt
- * The event to use as a source for the details
- * @return a MouseEventDetails containing information from the event
- */
- public static MouseEventDetails buildMouseEventDetails(NativeEvent evt) {
- return buildMouseEventDetails(evt, null);
- }
-
- /**
- * Construct a {@link MouseEventDetails} object from the given event.
- *
- * @param evt
- * The event to use as a source for the details
- * @param relativeToElement
- * The element whose position
- * {@link MouseEventDetails#getRelativeX()} and
- * {@link MouseEventDetails#getRelativeY()} are relative to.
- * @return a MouseEventDetails containing information from the event
- */
- public static MouseEventDetails buildMouseEventDetails(NativeEvent evt,
- Element relativeToElement) {
- MouseEventDetails mouseEventDetails = new MouseEventDetails();
- mouseEventDetails.setType(Event.getTypeInt(evt.getType()));
- mouseEventDetails.setClientX(WidgetUtil.getTouchOrMouseClientX(evt));
- mouseEventDetails.setClientY(WidgetUtil.getTouchOrMouseClientY(evt));
- if (evt.getButton() == NativeEvent.BUTTON_LEFT) {
- mouseEventDetails.setButton(MouseButton.LEFT);
- } else if (evt.getButton() == NativeEvent.BUTTON_RIGHT) {
- mouseEventDetails.setButton(MouseButton.RIGHT);
- } else if (evt.getButton() == NativeEvent.BUTTON_MIDDLE) {
- mouseEventDetails.setButton(MouseButton.MIDDLE);
- } else {
- // No button reported? Assume left.
- mouseEventDetails.setButton(MouseButton.LEFT);
- }
- mouseEventDetails.setAltKey(evt.getAltKey());
- mouseEventDetails.setCtrlKey(evt.getCtrlKey());
- mouseEventDetails.setMetaKey(evt.getMetaKey());
- mouseEventDetails.setShiftKey(evt.getShiftKey());
- if (relativeToElement != null) {
- mouseEventDetails.setRelativeX(getRelativeX(
- mouseEventDetails.getClientX(), relativeToElement));
- mouseEventDetails.setRelativeY(getRelativeY(
- mouseEventDetails.getClientY(), relativeToElement));
- }
- return mouseEventDetails;
-
- }
-
- private static int getRelativeX(int clientX, Element target) {
- return clientX - target.getAbsoluteLeft() + target.getScrollLeft()
- + target.getOwnerDocument().getScrollLeft();
- }
-
- private static int getRelativeY(int clientY, Element target) {
- return clientY - target.getAbsoluteTop() + target.getScrollTop()
- + target.getOwnerDocument().getScrollTop();
- }
-
- }
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