com.vaadin.event.MouseEvents Maven / Gradle / Ivy
/*
* Copyright (C) 2000-2024 Vaadin Ltd
*
* This program is available under Vaadin Commercial License and Service Terms.
*
* See for the full
* license.
*/
package com.vaadin.event;
import java.lang.reflect.Method;
import com.vaadin.shared.MouseEventDetails;
import com.vaadin.shared.MouseEventDetails.MouseButton;
import com.vaadin.ui.Component;
import com.vaadin.util.ReflectTools;
/**
* Interface that serves as a wrapper for mouse related events.
*
* @author Vaadin Ltd.
* @see ClickListener
* @since 6.2
*/
public interface MouseEvents {
/**
* Class for holding information about a mouse click event. A
* {@link ClickEvent} is fired when the user clicks on a
* Component.
*
* The information available for click events are terminal dependent.
* Correct values for all event details cannot be guaranteed.
*
* @author Vaadin Ltd.
* @see ClickListener
* @since 6.2
*/
public static class ClickEvent extends Component.Event {
/**
* @deprecated As of 7.0, use {@link MouseButton#LEFT} instead.
*/
@Deprecated
public static final MouseButton BUTTON_LEFT = MouseButton.LEFT;
/**
* @deprecated As of 7.0, use {@link MouseButton#MIDDLE} instead.
*/
@Deprecated
public static final MouseButton BUTTON_MIDDLE = MouseButton.MIDDLE;
/**
* @deprecated As of 7.0, use {@link MouseButton#RIGHT} instead.
*/
@Deprecated
public static final MouseButton BUTTON_RIGHT = MouseButton.RIGHT;
private final MouseEventDetails details;
public ClickEvent(Component source,
MouseEventDetails mouseEventDetails) {
super(source);
details = mouseEventDetails;
}
/**
* Returns an identifier describing which mouse button the user pushed.
* Compare with {@link MouseButton#LEFT},{@link MouseButton#MIDDLE},
* {@link MouseButton#RIGHT} to find out which button it is.
*
* @return one of {@link MouseButton#LEFT}, {@link MouseButton#MIDDLE},
* {@link MouseButton#RIGHT}.
*/
public MouseButton getButton() {
return details.getButton();
}
/**
* Returns the mouse position (x coordinate) when the click took place.
* The position is relative to the browser client area.
*
* @return The mouse cursor x position
*/
public int getClientX() {
return details.getClientX();
}
/**
* Returns the mouse position (y coordinate) when the click took place.
* The position is relative to the browser client area.
*
* @return The mouse cursor y position
*/
public int getClientY() {
return details.getClientY();
}
/**
* Returns the relative mouse position (x coordinate) when the click
* took place. The position is relative to the clicked component.
*
* @return The mouse cursor x position relative to the clicked layout
* component or -1 if no x coordinate available
*/
public int getRelativeX() {
return details.getRelativeX();
}
/**
* Returns the relative mouse position (y coordinate) when the click
* took place. The position is relative to the clicked component.
*
* @return The mouse cursor y position relative to the clicked layout
* component or -1 if no y coordinate available
*/
public int getRelativeY() {
return details.getRelativeY();
}
/**
* Checks if the event is a double click event.
*
* @return true if the event is a double click event, false otherwise
*/
public boolean isDoubleClick() {
return details.isDoubleClick();
}
/**
* Checks if the Alt key was down when the mouse event took place.
*
* @return true if Alt was down when the event occurred, false otherwise
*/
public boolean isAltKey() {
return details.isAltKey();
}
/**
* Checks if the Ctrl key was down when the mouse event took place.
*
* @return true if Ctrl was pressed when the event occurred, false
* otherwise
*/
public boolean isCtrlKey() {
return details.isCtrlKey();
}
/**
* Checks if the Meta key was down when the mouse event took place.
*
* @return true if Meta was pressed when the event occurred, false
* otherwise
*/
public boolean isMetaKey() {
return details.isMetaKey();
}
/**
* Checks if the Shift key was down when the mouse event took place.
*
* @return true if Shift was pressed when the event occurred, false
* otherwise
*/
public boolean isShiftKey() {
return details.isShiftKey();
}
/**
* Returns a human readable string representing which button has been
* pushed. This is meant for debug purposes only and the string returned
* could change. Use {@link #getButton()} to check which button was
* pressed.
*
* @since 6.3
* @return A string representation of which button was pushed.
*/
public String getButtonName() {
return details.getButtonName();
}
/**
* Returns an information about mouse event like position, buttons
* pressed etc.
*
* @since 8.1
* @return An information about mouse event
*/
public MouseEventDetails getMouseEventDetails() {
return details;
}
}
/**
* Interface for listening for a {@link ClickEvent} fired by a
* {@link Component}.
*
* @see ClickEvent
* @author Vaadin Ltd.
* @since 6.2
*/
@FunctionalInterface
public interface ClickListener extends ConnectorEventListener {
public static final Method clickMethod = ReflectTools
.findMethod(ClickListener.class, "click", ClickEvent.class);
/**
* Called when a {@link Component} has been clicked. A reference to the
* component is given by {@link ClickEvent#getComponent()}.
*
* @param event
* An event containing information about the click.
*/
public void click(ClickEvent event);
}
/**
* Class for holding additional event information for DoubleClick events.
* Fired when the user double-clicks on a Component.
*
* @see ClickEvent
* @author Vaadin Ltd.
* @since 6.2
*/
public static class DoubleClickEvent extends Component.Event {
public DoubleClickEvent(Component source) {
super(source);
}
}
/**
* Interface for listening for a {@link DoubleClickEvent} fired by a
* {@link Component}.
*
* @see DoubleClickEvent
* @author Vaadin Ltd.
* @since 6.2
*/
@FunctionalInterface
public interface DoubleClickListener extends ConnectorEventListener {
public static final Method doubleClickMethod = ReflectTools.findMethod(
DoubleClickListener.class, "doubleClick",
DoubleClickEvent.class);
/**
* Called when a {@link Component} has been double clicked. A reference
* to the component is given by {@link DoubleClickEvent#getComponent()}.
*
* @param event
* An event containing information about the double click.
*/
public void doubleClick(DoubleClickEvent event);
}
}